CN103851246B - A kind of many valves bunch grade adjustment method and the system of adjustment - Google Patents

Abstract

The present invention relates to a kind of many valves bunch grade adjustment method and control method, it comprises the following steps: 1 is sent the adjustment signal to multiple valve openings by controlling channel module; The scope controlling the adjustment signal that channel module sends is divided into m part by 2, is sequentially allocated and regulates valve reception signaling module to n-th; 3 are regulated valve reception signaling module by n-th obtains the opening amount signal scope of the n-th adjustment valve further; Each opening amount signal scope regulating valve is fed back to control channel module by control signal transmission cable by 4, and then the plurality of bunch grade adjustment valve carries out aperture simultaneously and precision regulates. The invention still further relates to a kind of many valves cascade control system, controlling channel module and control channel module circuit including one and accept signaling module group by the adjustment valve of connection, adjustment valve is accepted signaling module group and is connected on control channel module by control signal transmission cable. The present invention can save cost, and realizes holistic management and the adjustment of valve opening.

Description

A kind of many valves bunch grade adjustment method and the system of adjustment

Technical field

The present invention relates to nuclear industry field, be specifically related to bunch grade adjustment method and the adjustment system of a kind of multiple valve.

Background technology

At present, at industrial control field, it is sometimes desirable to need the adjustment of different Valve controlling precision in different phase, especially high-pressure system or equipment are when accurate coutroi velocity, the control valve of different Cv value is generally adopted to be installed in parallel and run. And control system and generally adopt one to control passage corresponding to a control valve. So controlling to be disadvantageous in that, when system or equipment is in high pressure, high-pressure system or equipment are often caused bigger impact by the opening by mistake to open of large flux control valve, and are unfavorable for stablizing of the precision controlled and system. In system boost process, when being in low pressure, it is often desirable that large flux control valve can quick closedown, reach as early as possible to boost to high pressure phase purpose, when system pressure is close to high pressure spot, wish that again adopting the adjustment valve of less Cv value to carry out low discharge high accuracy regulates. In system stress-relief process, Valve controlling is then just contrary with aforementioned control strategy. If the control valve of different Cv values adopts different control passages, not only result in control passage multi-configuration, it is often more important that be likely to result in opening by mistake of valve management person and open or close by mistake.

Summary of the invention

The present invention to solve the technical problem that being to provide one carries out bunch grade adjustment by controlling passage with one to multiple valves, in time using different Cv value control valve coutroi velocities, the different adjustment precision controlling stage needs in difference can be met, and then realize the high accuracy of system, quick, steady, safe many valves bunch grade adjustment method and adjustment system.

In order to solve above-mentioned technical problem, the technical scheme is that, a kind of many valves bunch grade adjustment method and regulate system, including:

Step one, by control channel module send the adjustment signal to multiple valve openings;

Step 2, by control channel module send regulate signal scope be divided into m part, be sequentially allocated to n-th regulate valve receive signaling module, wherein n=1,2,3 ..., m;

Step 3, regulated valve by n-th and receive signaling module and obtain the opening amount signal scope of the n-th adjustment valve further;

Step 4, by control signal transmission cable, each opening amount signal scope regulating valve described is fed back to described control channel module, and then the plurality of bunch grade adjustment valve is carried out aperture and precision regulates simultaneously.

Described step 2 includes: it is S1 that control channel module sends the higher limit of signal, and lower limit is S2; The range of signal distributing to the 1st adjustment valve isThe range of signal distributing to the 2nd adjustment valve reception signaling module isBy that analogy, the n-th range of signal regulating valve reception signaling module is $[(n-1)\×\frac{S1-S2}{m},n\×\frac{S1-S2}{m}].$

Described step 3 includes: the n-th control valve opening signal minimum is the lower limit that the n-th adjustment valve receives the range of signal of signaling moduleN-th controlling opening of valve signal maximum is the higher limit that the n-th adjustment valve receives the range of signal of signaling module

Described S1=20mA, S2=4mA.

Described S1=10V, S2=0V.

A kind of many valves cascade control system, controlling channel module including one and described control channel module circuit accepts signaling module group by the adjustment valve of connection, described adjustment valve accepts signaling module group and is connected on described control channel module by control signal transmission cable;

Described adjustment valve accepts signaling module group and includes m the adjustment valve reception signaling module being connected in series;

Described control channel module sends the adjustment signal to multiple valve openings, and the scope regulating signal sent by described control channel module is divided into m part, is sequentially allocated and regulates valve reception signaling module, wherein n=1 to n-th, and 2,3 ..., m;

Described n-th regulates valve reception signaling module obtains the n-th control valve opening range of signal;

Each opening amount signal scope regulating valve described is fed back to described control channel module by described control signal transmission cable.

Beneficial effects of the present invention:

(1) use one to control passage and realize the bunch grade adjustment of multiple valve, saved the configuration controlling passage, reach to save the purpose of cost;

(2) aperture of multiple valves is controlled is incorporated into one and control passage, it is achieved the holistic management of valve opening and adjustment;

(3) in high-pressure system boosting and pressure reduction, it is achieved that the control of the different adjustment precision in each stage of system;

(4) avoid operator to open by mistake at high pressure phase and open dangerous impact and the impact that system and equipment are caused by big Cv value valve.

Accompanying drawing explanation

Fig. 1 is a kind of many valves cascade control system schematic diagram of the present invention;

In figure: 1-controls channel module, the 1st adjustment valve of 2-receives signaling module, and the 2nd adjustment valve of 3-receives signaling module, and 4-n-th regulates valve and receives signaling module, and 5-m-th regulates valve and receives signaling module, 6-control signal transmission cable.

Detailed description of the invention

Below in conjunction with drawings and Examples, the present invention is described further.

A kind of many valves bunch grade adjustment method of the present invention, including:

Step one, described control channel module send the adjustment signal to multiple valve openings, and generally this passage sends 4～20mA or 0～10V signal, and the aperture of corresponding valve is the total aperture lower limit of required each valve and higher limit;

Step 2, send the scope of signal and be divided into m (m > 1, m is integer) part by controlling channel module according to number and the required aperture of valve, distribute to m the adjustment valve being connected in series and receive signaling module;

Control channel module sends the higher limit of signal and is set to S1, and lower limit is set to S2;The range of signal distributing to the 1st adjustment valve isThe range of signal distributing to the 2nd adjustment valve reception signaling module is By that analogy, the n-th range of signal regulating valve reception signaling module is Wherein n=1,2,3 ..., m;

Step 3, regulated valve by n-th and receive signaling module and obtain the opening amount signal scope of the n-th adjustment valve further;

N-th control valve opening signal minimum is set to the lower limit that the n-th adjustment valve receives the range of signal of signaling moduleN-th controlling opening of valve signal maximum is correspondingly arranged the higher limit of the range of signal being the n-th adjustment valve reception signaling module

Step 4, by control signal transmission cable, each opening amount signal scope regulating valve described is fed back to described control channel module, and then the plurality of bunch grade adjustment valve is carried out aperture and precision regulates simultaneously.

Described S1=20mA, S2=4mA;

Described S1=10V, S2=0V;

A kind of many valves cascade control system of the present invention as shown in Figure 1, controlling channel module including one and described control channel module circuit accepts signaling module group by the adjustment valve of connection, described adjustment valve accepts signaling module group and is connected on described control channel module by control signal transmission cable;

Described adjustment valve accepts signaling module group and includes m the adjustment valve reception signaling module being connected in series; As it is shown in figure 1, this m adjustment valve receives signaling module is followed successively by the 1st adjustment valve reception signaling module, the 2nd adjustment valve receives signaling module, and n-th regulates valve receives signaling module, and m-th regulates valve reception signaling module, wherein n=1,2,3 ..., m;

Described control channel module sends the adjustment signal of each control valve opening;

Described n-th regulates valve reception signaling module obtains the n-th control valve opening range of signal.

The method of the present invention may apply in nuclear boiler secondary side water pressure test system, it is possible to is effectively ensured being smoothed out of the water pressure test.

Claims (6)

1. valve bunch grade adjustment method more than a kind, it is characterised in that: including:

Step one, by control channel module send the adjustment signal to multiple valve openings;

Step 2, by control channel module send regulate signal scope be divided into m part, be sequentially allocated to n-th regulate valve receive signaling module, wherein n=1,2,3 ..., m;

Step 3, regulated valve by n-th and receive signaling module and obtain the opening amount signal scope of the n-th adjustment valve further;

Step 4, by control signal transmission cable, each opening amount signal scope regulating valve described is fed back to described control channel module, and then the plurality of bunch grade adjustment valve is carried out aperture and precision regulates simultaneously.

2. the many valves bunch grade adjustment method described in claim 1, it is characterised in that: described step 2 includes: it is S1 that control channel module sends the higher limit of signal, and lower limit is S2; The range of signal distributing to the 1st adjustment valve is The range of signal distributing to the 2nd adjustment valve reception signaling module isBy that analogy, the n-th range of signal regulating valve reception signaling module is

3. the many valves bunch grade adjustment method described in claim 2, it is characterised in that: described step 3 includes: the n-th control valve opening signal minimum is the lower limit that the n-th adjustment valve receives the range of signal of signaling moduleN-th controlling opening of valve signal maximum is the higher limit that the n-th adjustment valve receives the range of signal of signaling module $n\×\frac{S1-S2}{m}.$

4. the many valves bunch grade adjustment method described in claim 2, it is characterised in that: described S1=20mA, S2=4mA.

5. the many valves bunch grade adjustment method described in claim 2, it is characterised in that: described S1=10V, S2=0V.

6. valve cascade control system more than a kind, it is characterized in that: including a control channel module and described control channel module circuit accepts signaling module group by the adjustment valve of connection, described adjustment valve accepts signaling module group and is connected on described control channel module by control signal transmission cable;

Described adjustment valve accepts signaling module group and includes m the adjustment valve reception signaling module being connected in series;

Described control channel module sends the adjustment signal to multiple valve openings, and the scope regulating signal sent by described control channel module is divided into m part, is sequentially allocated and regulates valve reception signaling module, wherein n=1 to n-th, and 2,3 ..., m;

Described n-th regulates valve reception signaling module obtains the n-th control valve opening range of signal;

Each opening amount signal scope regulating valve described is fed back to described control channel module by described control signal transmission cable.