CN103906333A - X light pipe power supply device, power supply system with X light pipe power supply device, and operation method of power supply system - Google Patents
X light pipe power supply device, power supply system with X light pipe power supply device, and operation method of power supply system Download PDFInfo
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- CN103906333A CN103906333A CN201210587214.4A CN201210587214A CN103906333A CN 103906333 A CN103906333 A CN 103906333A CN 201210587214 A CN201210587214 A CN 201210587214A CN 103906333 A CN103906333 A CN 103906333A
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Abstract
The invention discloses an X-ray pipe power supply device, a power supply system with the X-ray pipe power supply device, and an operation method of the power supply system. The power supply system comprises an X-ray pipe and the X-ray pipe power supply device. The X-ray pipe is provided with a negative electrode and a positive electrode. The X-ray pipe power supply device comprises a first power supply switching unit, a second power supply switching unit and a power switch unit. The first power supply switching unit generates a positive voltage and a driving voltage. The second power supply switching unit generates a negative voltage. When the driving voltage controls the power switch unit to be turned off, the X-ray pipe power supply device outputs a negative voltage so that the negative electrode of the X-ray pipe can be prevented from generating electron stream energy. When the driving voltage controls the power switch unit to be turned on, the X-ray pipe power supply device outputs a positive voltage so that the negative electrode of the X-ray pipe can be driven to generate electron stream energy so as to hit against the positive electrode and to generate X rays. By means of the X-ray pipe power supply device, the power supply system and the operation method, system cost can be reduced, and system operation stability can be improved.
Description
Technical field
The present invention relates to a kind of X-ray tube supply unit, the power-supply system with this device and method of operation thereof, relate in particular to a kind of grid-control formula X-ray tube (grid-controlled X-ray tube) supply unit, the power-supply system with this device and method of operation thereof.
Background technology
X-ray tube (X-ray tube) power supply is mainly made up of main power circuit and filament power supply circuit two parts.Main power circuit utilizes the voltage swing of step-up transformer (high-voltage transformer) raising external ac power source to produce high voltage, and by this high voltage producing, put on two interpolars of vacuum fluorescent tube, make the electronics producing from negative electrode (cathode) filament send out X-ray with great kinetic energy impinge anode (anode).Filament power supply circuit utilizes the voltage swing of step-down transformer (filament transformer) reduction external ac power source to produce low-voltage, and this low-voltage producing is provided in to filament two ends, make filament provide enough electronics by thermionic emission mode.
Therefore, how to design a kind of X-ray tube supply unit, the power-supply system with this device and method of operation thereof, reach the Polarity Control of grid voltage (grid voltage) by only utilizing a power switch unit, to reduce system cost, to improve system operational stability, a large problem that overcomes and solve for the application institute wish row.
Summary of the invention
An object of the present invention is to provide a kind of X-ray tube supply unit, to overcome the problem of prior art.Therefore X-ray tube supply unit of the present invention, comprises one first power conversion unit, a second source converting unit and a power switch unit.This first power conversion unit comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce a positive voltage and a driving voltage.This second source converting unit comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce a negative voltage.This power switch unit connects this first transformer and this second transformer.Wherein, in the time of this power switch unit conducting of this driving voltage control, export this positive voltage; In the time of this power switch unit cut-off of this driving voltage control, export this negative voltage.
Another object of the present invention is to provide a kind of power-supply system with X-ray tube supply unit, to overcome the problem of prior art.Therefore the power-supply system that the present invention has an X-ray tube supply unit comprises an X-ray tube and an X-ray tube supply unit.This X-ray tube has a negative electrode and an anode.This X-ray tube supply unit is electrically connected this X-ray tube, and comprises one first power conversion unit, a second source converting unit and a power switch unit.This first power conversion unit comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce a positive voltage and a driving voltage.This second source converting unit comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce a negative voltage.This power switch unit connects this first transformer and this second transformer.Wherein, in the time of this power switch unit cut-off of this driving voltage control, export this negative voltage, produce an electron stream energy to suppress this negative electrode of this X-ray tube; In the time of this power switch unit conducting of this driving voltage control, export this positive voltage, produce X-ray to drive this negative electrode of this X-ray tube to produce this electron stream energy to clash into this anode.
Another object more of the present invention is to provide a kind of method of operation of tool X-ray tube supply unit power-supply system, and the method comprises the following step: an X-ray tube (a) is provided, and this X-ray tube has a negative electrode and an anode; (b) provide an X-ray tube supply unit, this X-ray tube supply unit produces a positive voltage, a driving voltage and a negative voltage; (c) provide a power switch unit; (d) in the time of this power switch unit cut-off of this driving voltage control, this X-ray tube supply unit is exported this negative voltage, produces an electron stream energy to suppress this negative electrode of this X-ray tube; And (e) in the time of this power switch unit conducting of this driving voltage control, this X-ray tube supply unit is exported this positive voltage, produces X-ray to drive this negative electrode of this X-ray tube to produce this electron stream energy to clash into this anode.
Beneficial effect of the present invention is, only utilizes this power switch unit to reach the Polarity Control of grid voltage, to reduce system cost, to improve system operational stability.
Technology, means and effect of taking for reaching predetermined object in order further to understand the present invention, refer to following about detailed description of the present invention and accompanying drawing, believe object of the present invention, feature and feature, when obtaining thus one deeply and concrete understanding, but accompanying drawing only provides reference and explanation use, is not used for the present invention to be limited.
Accompanying drawing explanation
Fig. 1 is the block diagram of X-ray tube supply unit of the present invention;
Fig. 2 is the circuit diagram of X-ray tube supply unit of the present invention;
Fig. 3 is the block diagram of the power-supply system of tool X-ray tube supply unit of the present invention;
Fig. 4 is the circuit diagram of the power-supply system of tool X-ray tube supply unit of the present invention; And
Fig. 5 is the flow chart of the method for operation of tool X-ray tube supply unit power-supply system of the present invention.
Wherein, description of reference numerals is as follows:
100X light pipe supply unit
200 have the power-supply system of X-ray tube supply unit
10 first power conversion units
102 first transformers
104 first rectification circuits
106 second rectification circuits
108 first filter circuits
110 second filter circuits
1021 first side winding
1022 secondary side winding
1023 secondary side winding
20 second source converting units
202 second transformers
204 the 3rd rectification circuits
206 the 3rd filter circuits
2021 first side winding
2022 secondary side winding
2023 secondary side winding
30 power switch units
40 voltage stabilizing drive circuits
50 X-ray tubes
60 high voltage generation units
Vac1 the first alternating voltage
Vac2 the second alternating voltage
Vact1 the first AC switching voltage
Vact2 the second AC switching voltage
Vact3 the 3rd AC switching voltage
Vact4 the 4th AC switching voltage
Vdc1 the first direct voltage
Vdc2 the second direct voltage
Vdc3 the 3rd direct voltage
Vp positive voltage
Vd driving voltage
Vn negative voltage
V
-HVChigh negative voltage reference potential
V
-HVhigh negative voltage
V
+ HVhigh positive voltage
Ta anode
Tc negative electrode
V
gRIDgrid voltage
S10 ~ S50 step
Embodiment
Hereby relevant the technical content and a detailed description, coordinate accompanying drawing to be described as follows:
Refer to Fig. 1, its block diagram that is X-ray tube supply unit of the present invention.This X-ray tube supply unit 100 comprises one first power conversion unit 10, a second source converting unit 20 and a power switch unit 30.This first power conversion unit 10 comprises one first transformer 102, and this first transformer 102 receives one first alternating voltage Vac1, and changes this first alternating voltage Vac1 to produce a positive voltage Vp and a driving voltage Vd.This second source converting unit 20 comprises one second transformer 202, and this second transformer 202 receives one second alternating voltage Vac2, and changes this second alternating voltage Vac2 to produce a negative voltage Vn.This power switch unit 30 connects this first transformer 102 and this second transformer 202.Be worth mentioning, this first transformer 102 couples a high negative voltage reference potential V with this second transformer 202
-HVC.Moreover this first transformer 102 is a grid transformer (grid transformer), this second transformer 202 is a filament transformer (filament transformer).Wherein this power switch unit 30 is a metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFT), insulation lock bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), transistor (Transistor) or thyristor (Silicon-Controlled Rectifier, SCR), but not as limit.In the time that this driving voltage Vd controls this power switch unit 30 conducting, this X-ray tube supply unit 100 this positive voltage of output Vp; In the time that this driving voltage Vd controls this power switch unit 30 and ends, this X-ray tube supply unit 100 this negative voltage of output Vn.As for the detailed circuit framework of this X-ray tube supply unit 100, by hereinafter there being detailed elaboration.
Referring to Fig. 2, is the circuit diagram of X-ray tube supply unit of the present invention.As mentioned above, this X-ray tube supply unit 100 comprises this first power conversion unit 10, this second source converting unit 20 and this power switch unit 30.This first transformer 102 has a first side winding 1021 and two secondary side winding 1022,1023.This first side winding 1021 receives this first alternating voltage Vac1, and changes this first alternating voltage Vac1 respectively at this two secondary side winding 1022,1023 generation one first AC switching voltage Vact1 and one second AC switching voltage Vact2.This first power conversion unit 10 also comprises one first rectification circuit 104, one second rectification circuit 106, one first filter circuit 108 and one second filter circuit 110.This first rectification circuit 104 receives this first AC switching voltage Vact1, and this first AC switching voltage of rectification Vact1 is one first direct voltage Vdc1.This second rectification circuit 106 receives this second AC switching voltage Vact2, and this second AC switching voltage of rectification Vact2 is one second direct voltage Vdc2.This first filter circuit 108 receives this first direct voltage Vdc1, and this first direct voltage of filtering Vdc1, to produce this positive voltage Vp.This second filter circuit 110 receives this second direct voltage Vdc2, and this second direct voltage of filtering Vdc2, to produce this driving voltage Vd.In addition, this X-ray tube supply unit 100 also comprises a voltage stabilizing drive circuit 40, the circuit framework that this voltage stabilizing drive circuit 40 forms for resistor network and Zener diode (Zener diode).This voltage stabilizing drive circuit 40 connects this second filter circuit 110, makes under voltage-stabilizing protection, provides this driving voltage Vd to this power switch unit 30.
This second transformer 202 has a first side winding 2021 and two secondary side winding 2022,2023.This first side winding 2021 receives this second alternating voltage Vac2, and change this second alternating voltage Vac2 therein this secondary side winding 2022 produce one the 3rd AC switching voltage Vact3.This second source converting unit 20 also comprises one the 3rd rectification circuit 204 and one the 3rd filter circuit 206.The 3rd rectification circuit 204 receives the 3rd AC switching voltage Vact3, and rectification the 3rd AC switching voltage Vact3 is one the 3rd direct voltage Vdc3.The 3rd filter circuit 206 receives the 3rd direct voltage Vdc3, and filtering the 3rd direct voltage Vdc3, to produce this negative voltage Vn.
Refer to Fig. 3, the block diagram of its power-supply system that is X-ray tube supply unit of the present invention.This power-supply system 200 with X-ray tube supply unit comprises an X-ray tube 50 and an X-ray tube supply unit 100.This X-ray tube has a negative electrode Tc and an anode Ta.Wherein, this negative electrode is generally filament in order to produce electronics, and anode is for tungsten target is in order to provide electronic impact place.And, between this negative electrode Tc and this anode Ta, maintain high vacuum.This X-ray tube supply unit 100 is electrically connected this X-ray tube 50.This X-ray tube supply unit comprises one first power conversion unit 10, a second source converting unit 20 and a power switch unit 30.This first power conversion unit 10 comprises one first transformer 102, and this first transformer 102 receives one first alternating voltage Vac1, and changes this first alternating voltage Vac1 to produce a positive voltage Vp and a driving voltage Vd.This second source converting unit 20 comprises one second transformer 202, and this second transformer 202 receives one second alternating voltage Vac2, and changes this second alternating voltage Vac2 to produce a negative voltage Vn.This power switch unit 30 connects this first transformer 102 and this second transformer 202.Be worth mentioning, this first transformer 102 couples a high negative voltage reference potential V with this second transformer 202
-HVC.Moreover this first transformer 102 is a grid transformer (grid transformer), this second transformer 202 is a filament transformer (filament transformer).Wherein this power switch unit 30 is a metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFT), insulation lock bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), transistor (Transistor) or thyristor (Silicon-Controlled Rectifier, SCR), but not as limit.In addition, the power-supply system 200 of this tool X-ray tube supply unit also comprises a high voltage generation unit 60, and this high voltage generation unit 60 produces a high negative voltage V
-HVwith a high positive voltage V
+ HV, with this negative electrode Tc to this X-ray tube 50 and this anode Ta power supply respectively, the electron beam being produced to provide accelerates mobile via high pressure.In the time that this driving voltage Vd controls this power switch unit 30 and ends, this X-ray tube supply unit 100 this negative voltage of output Vn, produce an electron stream energy with this negative electrode Tc that suppresses this X-ray tube 50; In the time that this driving voltage Vd controls this power switch unit 30 conducting, this X-ray tube supply unit 100 this positive voltage of output Vp, produce X-ray to drive this negative electrode Tc of this X-ray tube 50 to produce this electron stream energy to clash into this anode Ta.As for the detailed circuit framework of this X-ray tube supply unit 100, by hereinafter there being detailed elaboration.
Refer to Fig. 4, it has the circuit diagram of the power-supply system of X-ray tube supply unit for the present invention.As mentioned above, this X-ray tube supply unit 100 comprises this first power conversion unit 10, this second source converting unit 20 and this power switch unit 30.This first transformer 102 has a first side winding 1021 and two secondary side winding 1022,1023.This first side winding 1021 receives this first alternating voltage Vac1, and changes this first alternating voltage Vac1 respectively at this two secondary side winding 1022,1023 generation one first AC switching voltage Vact1 and one second AC switching voltage Vact2.This first power conversion unit 10 also comprises one first rectification circuit 104, one second rectification circuit 106, one first filter circuit 108 and one second filter circuit 110.This first rectification circuit 104 receives this first AC switching voltage Vact1, and this first AC switching voltage of rectification Vact1 is one first direct voltage Vdc1.This second rectification circuit 106 receives this second AC switching voltage Vact2, and this second AC switching voltage of rectification Vact2 is one second direct voltage Vdc2.This first filter circuit 108 receives this first direct voltage Vdc1, and this first direct voltage of filtering Vdc1, to produce this positive voltage Vp.This second filter circuit 110 receives this second direct voltage Vdc2, and this second direct voltage of filtering Vdc2, to produce this driving voltage Vd.In addition, this X-ray tube supply unit 100 also comprises a voltage stabilizing drive circuit 40, the circuit framework that this voltage stabilizing drive circuit 40 forms for resistor network and Zener diode (Zener diode).This voltage stabilizing drive circuit 40 connects this second filter circuit 110, makes under voltage-stabilizing protection, provides this driving voltage Vd to this power switch unit 30.
This second transformer 202 has a first side winding 2021 and two secondary side winding 2022,2023.This first side winding 2021 receives this second alternating voltage Vac2, and change this second alternating voltage Vac2 therein this secondary side winding 2022 produce one the 3rd AC switching voltage Vact3.This second source converting unit 20 also comprises one the 3rd rectification circuit 204 and one the 3rd filter circuit 206.The 3rd rectification circuit 204 receives the 3rd AC switching voltage Vact3, and rectification the 3rd AC switching voltage Vact3 is one the 3rd direct voltage Vdc3.The 3rd filter circuit 206 receives the 3rd direct voltage Vdc3, and filtering the 3rd direct voltage Vdc3, to produce this negative voltage Vn.Be worth mentioning, this secondary side winding 2023 of another of this second transformer 202 produces one the 4th AC switching voltage Vact4, provides preheating required voltage with this negative electrode Tc to this X-ray tube 50.
By this, in the time that user operates this X-ray tube 50 and drives, 30 of this power switch units switch to conducting state by cut-off state, make this X-ray tube supply unit 100 switch to this positive voltage of output Vp by output this negative voltage Vn, and then drive this negative electrode Tc of this X-ray tube 50 to produce this electron stream energy to produce X-ray to clash into this anode Ta.Be worth mentioning, in the present embodiment, this negative voltage Vn Typical value range is 0 volt to-200 volts; And this positive voltage Vp Typical value range is 300 volts to 500 volts.
Refer to Fig. 5, the flow chart of its method of operation that is tool X-ray tube supply unit power-supply system of the present invention.This method of operation system comprises the following step: an X-ray tube is provided, and this X-ray tube has a negative electrode and an anode (S10).Then, provide an X-ray tube supply unit, this X-ray tube supply unit produces a positive voltage, a driving voltage and a negative voltage (S20).Wherein this X-ray tube supply unit is electrically connected this X-ray tube, and this X-ray tube supply unit comprises one first power conversion unit, a second source converting unit and a power switch unit.This first power conversion unit comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce this positive voltage and this driving voltage.This second source converting unit comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce this negative voltage.
This first transformer has a first side winding and two secondary side winding.This first side winding receives this first alternating voltage, and changes this first alternating voltage respectively at this two secondary side winding generation one first AC switching voltage and one second AC switching voltage.This first power conversion unit also comprises one first rectification circuit, one second rectification circuit, one first filter circuit and one second filter circuit.This first rectification circuit receives this first AC switching voltage, and this first AC switching voltage of rectification is one first direct voltage.This second rectification circuit receives this second AC switching voltage, and this second AC switching voltage of rectification is one second direct voltage.This first filter circuit receives this first direct voltage, and this first direct voltage of filtering, to produce this positive voltage.This second filter circuit receives this second direct voltage, and this second direct voltage of filtering, to produce this driving voltage.In addition, this X-ray tube supply unit also comprises a voltage stabilizing drive circuit, the circuit framework that this voltage stabilizing drive circuit forms for resistor network and Zener diode (Zener diode).This voltage stabilizing drive circuit connects this second filter circuit, and making, under voltage-stabilizing protection, provides this driving voltage to this power switch unit.This second transformer has a first side winding and two secondary side winding.This first side winding receives this second alternating voltage, and changes this second alternating voltage this secondary side winding generation one the 3rd AC switching voltage therein.This second source converting unit also comprises one the 3rd rectification circuit and one the 3rd filter circuit.The 3rd rectification circuit system receives the 3rd AC switching voltage, and rectification the 3rd AC switching voltage is one the 3rd direct voltage.The 3rd filter circuit receives the 3rd direct voltage, and filtering the 3rd direct voltage, to produce this negative voltage.
Then, provide a power switch unit (S30).This power switch unit connects this first transformer and this second transformer.Be worth mentioning, this first transformer and this second transformer couple a high negative voltage reference potential.Moreover this first transformer is a grid transformer (grid transformer), this second transformer is a filament transformer (filament transformer).Wherein this power switch component is a metal oxide semiconductcor field effect transistor (Metal-Oxide-Semiconductor Field-Effect Transistor, MOSFT), insulation lock bipolar transistor (Insulated Gate Bipolar Transistor, IGBT), transistor (Transistor) or thyristor (Silicon-Controlled Rectifier, SCR), but not as limit.In the time of this power switch unit cut-off of this driving voltage control, this X-ray tube supply unit is exported this negative voltage, produces an electron stream energy (S40) to suppress this negative electrode of this X-ray tube.In the time of this power switch unit conducting of this driving voltage control, this X-ray tube supply unit is exported this positive voltage, produces X-ray (S50) to drive this negative electrode of this X-ray tube to produce this electron stream energy to clash into this anode.
In sum, the present invention has following feature & benefits:
1, utilize this power switch unit 30, then coordinate corresponding drive circuit, can reach grid voltage (grid voltage, V
gRID) Polarity Control, that is, in the time that user operates this X-ray tube 50 and drives, 30 of this power switch units switch to conducting state by cut-off state, make this X-ray tube supply unit 100 switch to this positive voltage of output Vp by output this negative voltage Vn, and then drive this negative electrode Tc of this X-ray tube 50 to produce this electron stream energy to produce X-ray to clash into this anode Ta; And
2, only utilize this power switch unit 30 to reach grid voltage (grid voltage, V
gRID) Polarity Control, to reduce system cost, to improve system operational stability.
Only, the above, be only detailed description and the accompanying drawing of preferred embodiment of the present invention, only feature of the present invention is not limited to this, and not in order to limit the present invention, all scopes of the present invention should be as the criterion with claim, all closing in the embodiment of the spirit variation similar with it of the claims in the present invention, all should be contained in category of the present invention, any those skilled in the art in the field of the invention, can think easily and variation or modify and all can be encompassed in following the scope of the claims of the present invention.
Claims (20)
1. an X-ray tube supply unit, comprises:
One first power conversion unit, comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce a positive voltage and a driving voltage;
One second source converting unit, comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce a negative voltage; And
One power switch unit, connects this first transformer and this second transformer;
Wherein, in the time of this power switch unit conducting of this driving voltage control, export this positive voltage; In the time of this power switch unit cut-off of this driving voltage control, export this negative voltage.
2. X-ray tube supply unit as claimed in claim 1, wherein this first transformer has a first side winding and two secondary side winding, this first side winding receives this first alternating voltage, and changes this first alternating voltage respectively at this two secondary side winding generation one first AC switching voltage and one second AC switching voltage; This first power conversion unit also comprises:
One first rectification circuit, receives this first AC switching voltage, and this first AC switching voltage of rectification is one first direct voltage;
One second rectification circuit, receives this second AC switching voltage, and this second AC switching voltage of rectification is one second direct voltage;
One first filter circuit, receives this first direct voltage, and this first direct voltage of filtering, to produce this positive voltage; And
One second filter circuit, receives this second direct voltage, and this second direct voltage of filtering, to produce this driving voltage.
3. X-ray tube supply unit as claimed in claim 1, wherein this second transformer has a first side winding and two secondary side winding, this first side winding receives this second alternating voltage, and changes this second alternating voltage this secondary side winding generation one the 3rd AC switching voltage therein; This second source converting unit also comprises:
One the 3rd rectification circuit, receives the 3rd AC switching voltage, and rectification the 3rd AC switching voltage is one the 3rd direct voltage; And
One the 3rd filter circuit, receives the 3rd direct voltage, and filtering the 3rd direct voltage, to produce this negative voltage.
4. X-ray tube supply unit as claimed in claim 1, wherein this first transformer and this second transformer couple a high negative voltage reference potential; This first transformer is a grid transformer, and this second transformer is a filament transformer.
5. X-ray tube supply unit as claimed in claim 2, wherein this X-ray tube supply unit also comprises a voltage stabilizing drive circuit, and this voltage stabilizing drive circuit connects this second filter circuit, and making, under voltage-stabilizing protection, provides this driving voltage to this power switch unit.
6. X-ray tube supply unit as claimed in claim 1, wherein this power switch component is a metal oxide semiconductcor field effect transistor, insulation lock bipolar transistor, transistor or thyristor.
7. a power-supply system with X-ray tube supply unit, comprises:
One X-ray tube, has a negative electrode and an anode; And
One X-ray tube supply unit, is electrically connected this X-ray tube, and this X-ray tube supply unit comprises:
One first power conversion unit, comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce a positive voltage and a driving voltage;
One second source converting unit, comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce a negative voltage; And
One power switch unit, connects this first transformer and this second transformer;
Wherein, in the time of this power switch unit cut-off of this driving voltage control, export this negative voltage, produce an electron stream energy to suppress this negative electrode of this X-ray tube; In the time of this power switch unit conducting of this driving voltage control, export this positive voltage, produce X-ray to drive this negative electrode of this X-ray tube to produce this electron stream energy to clash into this anode.
8. the power-supply system with X-ray tube supply unit as claimed in claim 7, wherein this first transformer has a first side winding and two secondary side winding, this first side winding receives this first alternating voltage, and changes this first alternating voltage respectively at this two secondary side winding generation one first AC switching voltage and one second AC switching voltage; This first power conversion unit also comprises:
One first rectification circuit, receives this first AC switching voltage, and this first AC switching voltage of rectification is one first direct voltage;
One second rectification circuit, receives this second AC switching voltage, and this second AC switching voltage of rectification is one second direct voltage;
One first filter circuit, receives this first direct voltage, and this first direct voltage of filtering, to produce this positive voltage; And
One second filter circuit, receives this second direct voltage, and this second direct voltage of filtering, to produce this driving voltage.
9. the power-supply system with X-ray tube supply unit as claimed in claim 7, wherein this second transformer has a first side winding and two secondary side winding, this first side winding receives this second alternating voltage, and changes this second alternating voltage this secondary side winding generation one the 3rd AC switching voltage therein; This second source converting unit also comprises:
One the 3rd rectification circuit, receives the 3rd AC switching voltage, and rectification the 3rd AC switching voltage is one the 3rd direct voltage; And
One the 3rd filter circuit, receives the 3rd direct voltage, and filtering the 3rd direct voltage, to produce this negative voltage.
10. the power-supply system with X-ray tube supply unit as claimed in claim 7, wherein this first transformer and this second transformer couple a high negative voltage reference potential; This first transformer is a grid transformer, and this second transformer is a filament transformer.
11. power-supply systems with X-ray tube supply unit as claimed in claim 8; wherein this X-ray tube supply unit also comprises a voltage stabilizing drive circuit; this voltage stabilizing drive circuit connects this second filter circuit, and making, under voltage-stabilizing protection, provides this driving voltage to this power switch unit.
12. power-supply systems with X-ray tube supply unit as claimed in claim 7, wherein this power-supply system also comprises a high voltage generation unit, this high voltage generation unit produces high negative voltage and a high positive voltage, with this negative electrode to this X-ray tube and this anode supply respectively.
13. power-supply systems with X-ray tube supply unit as claimed in claim 9, wherein another this secondary side winding of this second transformer produces one the 4th AC switching voltage, to provide preheating required voltage to this negative electrode of this X-ray tube.
14. 1 kinds have the method for operation of X-ray tube supply unit power-supply system, comprise the following step:
(a) provide an X-ray tube, this X-ray tube has a negative electrode and an anode;
(b) provide an X-ray tube supply unit, this X-ray tube supply unit produces a positive voltage, a driving voltage and a negative voltage;
(c) provide a power switch unit;
(d) in the time of this power switch unit cut-off of this driving voltage control, this X-ray tube supply unit is exported this negative voltage, produces an electron stream energy to suppress this negative electrode of this X-ray tube; And
(e) in the time of this power switch unit conducting of this driving voltage control, this X-ray tube supply unit is exported this positive voltage, produces X-ray to drive this negative electrode of this X-ray tube to produce this electron stream energy to clash into this anode.
The method of operation of 15. power-supply systems as claimed in claim 14, wherein this X-ray tube supply unit is electrically connected this X-ray tube; This X-ray tube supply unit comprises:
One first power conversion unit, comprises one first transformer, and this first transformer receives one first alternating voltage, and changes this first alternating voltage to produce this positive voltage and this driving voltage; And
One second source converting unit, comprises one second transformer, and this second transformer receives one second alternating voltage, and changes this second alternating voltage to produce this negative voltage.
The method of operation of 16. power-supply systems as claimed in claim 15, wherein this first transformer has a first side winding and two secondary side winding, this first side winding receives this first alternating voltage, and changes this first alternating voltage respectively at this two secondary side winding generation one first AC switching voltage and one second AC switching voltage; This first power conversion unit also comprises:
One first rectification circuit, receives this first AC switching voltage, and this first AC switching voltage of rectification is one first direct voltage;
One second rectification circuit, receives this second AC switching voltage, and this second AC switching voltage of rectification is one second direct voltage;
One first filter circuit, receives this first direct voltage, and this first direct voltage of filtering, to produce this positive voltage; And
One second filter circuit, receives this second direct voltage, and this second direct voltage of filtering, to produce this driving voltage.
The method of operation of 17. power-supply systems as claimed in claim 15, wherein this second transformer has a first side winding and two secondary side winding, this first side winding receives this second alternating voltage, and changes this second alternating voltage this secondary side winding generation one the 3rd AC switching voltage therein; This second source converting unit also comprises:
One the 3rd rectification circuit, receives the 3rd AC switching voltage, and rectification the 3rd AC switching voltage is one the 3rd direct voltage; And
One the 3rd filter circuit, receives the 3rd direct voltage, and filtering the 3rd direct voltage carries out, to produce a negative voltage.
The method of operation of 18. power-supply systems as claimed in claim 16; wherein this X-ray tube supply unit also comprises a voltage stabilizing drive circuit; this voltage stabilizing drive circuit connects this second filter circuit, and making, under voltage-stabilizing protection, provides this driving voltage to this power switch unit.
The method of operation of 19. power-supply systems as claimed in claim 15, wherein this power-supply system also comprises a high voltage generation unit, and this high voltage generation unit produces high negative voltage and a high positive voltage, with this negative electrode to this X-ray tube and this anode supply respectively.
The method of operation of 20. power-supply systems as claimed in claim 17, wherein another this secondary side winding of this second transformer produces one the 4th AC switching voltage, to provide preheating required voltage to this negative electrode of this X-ray tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587214.4A CN103906333B (en) | 2012-12-28 | 2012-12-28 | X-ray tube supply unit, the power-supply system with this device and operational approach thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210587214.4A CN103906333B (en) | 2012-12-28 | 2012-12-28 | X-ray tube supply unit, the power-supply system with this device and operational approach thereof |
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Cited By (2)
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| CN107924796A (en) * | 2015-06-30 | 2018-04-17 | 韩国威泰有限公司 | Portable X ray generating means with electric field transmitting X radiographic sources |
| WO2021093786A1 (en) * | 2019-11-14 | 2021-05-20 | 深圳先进技术研究院 | Driving control circuit, apparatus and system for field emission x-ray source |
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| CN103906333B (en) | 2016-08-03 |
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