CN1084855C

CN1084855C - Automatic balance charging pipe device

Info

Publication number: CN1084855C
Application number: CN97104648A
Authority: CN
Inventors: 小西孝治
Original assignee: Miyairi Shoji K K
Current assignee: Miyairi Shoji K K
Priority date: 1997-04-11
Filing date: 1997-05-23
Publication date: 2002-05-15
Anticipated expiration: 2017-05-23
Also published as: KR100235803B1; TW411989U; KR19980079239A; CN1196458A; JPH10287397A

Abstract

Automatic balance charging pipe device applied to the dilivery of liquified gas between a tank car and a storage tank. One end of a cylinder 4 is connected to an outer circumferential surface of a pipe 2, to which a swivel joint 3 is mounted at its one end, with the aid of a fixing member 12, connecting members 10a, 10b, 10c and a connecting pin 9b. A piston 5 is provided inside the cylinder 4, and one end of a piston rod 6 is connected to the piston 5. The other end of the piston rod 6 is connected to the swivel joint 3. A fluid is confined in a space 4b positioned between the piston 5 and the other end of the cylinder 4. The provided loading arm in which fine adjustment for the holding power of a pipe is easy, which can depress the deterioration of performance due to use for a long period of time, and with which the miniaturization of an apparatus can be realized.

Description

Automatic balance charging pipe device

The automatic balance charging pipe device that uses when the present invention relates to for example between tank car and storage tank, carry out the liquid gas conveying.

As everyone knows, in the past, between tank car and storage tank, carried out using when liquid gas is carried automatic balance charging pipe device.Aftermentioned Fig. 3 is an example of the traditional automatic balance charging pipe device 1 of expression.

With reference to Fig. 3, automatic balance charging pipe device 1 has

pipe

2a, 2b, 2c and is connected swivel joint 3a, the 3b of these pipes, 3c and Spring balancer 20.Y shape valve 21 and joint 22 are set on the top of pipe 2c, and automatic balance charging pipe device 1 links to each other with the storage tank of tank car by joint 22.

On the other hand, swivel joint 3a is installed on the stand 23 pipe that configuration links to each other with storage tank (not shown) in this stand 23.And this pipe is linked to each other with pipe 2a by swivel joint 3a.The housing of Spring balancer 20 is fixed on the pipe 2a, makes from Spring balancer 20 interior outwardly directed tie rod end to link to each other with the arm 13a of swivel joint 3a.

Now the internal structure of Spring balancer 20 is described with Fig. 4.Fig. 4 is the part sectioned view of expression Spring balancer 20 internal structures.

With reference to Fig. 4, Spring balancer 20 has housing 24, many springs 26, spring bearer plate 27 and pull bars 29.On an end of housing 24, lid 24a is installed, will adjusts screw rod 35 and connect and be installed in this and cover, locking nut is installed in this adjusts on screw rod 35.

The other end at housing 24 is provided with opening portion, make pull bar 29 from then on opening portion pass through, in housing 24, outside housing 24, stretch out.By connecting pin 30, spring bearer plate 27 is linked to each other with an end of pull bar 29.In addition, joint 28 is installed on spring bearer plate 27, by make adjust screw rod 35 the top therewith joint 28 contact, restraining spring pressing plate 27 moves towards housing 24 1 extreme directions.

On the other end of pull bar 29, be installed with and adjust joint 31, by connecting pin 32, make this adjust joint 31 to link to each other with arm 13a rotationally.

In addition, spring retainer 25 is set in housing 24, keeps spring 26 with this spring retainer 25.And then, limiter 33 is inserted in the housing 24, on this limiter 33, locking nut 34 is installed.With these limiter 33 restraining spring pressing plates 27 moving towards the other end direction of housing 24.

Now refer again to Fig. 3,

pipe

2a, 2b, 2c are linked to each other by

swivel joint

3b, 3c respectively, and extend along the direction of leaving swivel joint 3a.Therefore, applying arbitrary external force, and the occasion that

pipe

2a, 2b, 2c are thrown the reins to, these

pipes

2a, 2b, 2c will be that the center is turned round downwards with swivel joint 3a.

At this moment, link to each other with the arm 13a of pipe 2a and swivel joint 3a, when

pipe

2a, 2b, 2c turn round, spring bearer plate shown in Figure 4 27 is moved downwards to the other end (arm 13a one side) of housing 24 by making above-mentioned Spring balancer 20.

In view of the above, spring 26 is compressed, and utilizes the counter-force that is produced by this pressure spring 26, makes spring bearer plate 27 bear power towards housing 24 1 ends (side of the adjustment screw rod 35 among Fig. 4) Return-ing direction.Its result, just make

pipe

2a, 2b, 2c to turning down obtain the restriction.That is to say,

pipe

2a, 2b, 2c are kept with Spring balancer 20.

For example, the operator to mat Spring balancer 20 as mentioned above and pipe 2a, the 2b, the 2c that are in held state turn round operation, links to each other joint 22 in automatic balance charging pipe device 1 and the joint of tank car one side at assigned position with hand.In view of the above, just can supply with liquid gas to tank car from storage tank.

Yet,, still have the variety of problems that will illustrate by using above-mentioned Spring balancer 20.At first,, make the fine setting difficulty of elastic force (confining force of automatic balance charging pipe device 1), thereby make automatic balance charging pipe device 1 keep the operating difficulties of balance owing to use spring 26.Simultaneously, the versatility of Spring balancer 20 is reduced, cost increases.And then, worry that also the elastic force of spring 26 changes in time, through using and decreased performance for a long time.In addition, also exist owing to holding many springs 26 as shown in Figure 4 and make Spring balancer 20 self become big problem.In addition, for above-mentioned " confining force of charging pipe ", thus definable or be called the pipe in the charging pipe is limited the power that pipe is maintained because of the revolution that deadweight produces.

Therefore, in order to solve above-mentioned problem, its purpose is to provide a kind of fine setting of carrying out the charging pipe confining force easily just in the present invention, can suppress to use caused decreased performance because of long-term, and can make the automatic balance charging pipe device of equipment miniaturization.

Automatic balance charging pipe device of the present invention comprise by be installed on the one end pipe joint and can rotating pipe, the cylinder of having enclosed fluid with inside limits the revolution more than the regulation that does not apply the above-mentioned pipe under the external force state, above-mentioned pipe is configured to and can turns round around the 1st gyration center, one end of above-mentioned cylinder links to each other with the outer circumferential face of above-mentioned pipe and above-mentioned cylinder can be turned round along described pipe gyratory directions, reciprocating piston is set in above-mentioned cylinder, and the one end is set links to each other with described piston, the other end links to each other with described pipe joint and becomes can be around the rotating piston rod of the 2nd gyration center that is positioned at described the 1st gyration center disconnected position, enclose described fluid in the space between the other end of described piston and described cylinder, it is characterized in that, from with above-mentioned cylinder, the direction that the rotation surface of above-mentioned piston rod and above-mentioned pipe is vertical sees that the elongation line of above-mentioned cylinder and above-mentioned piston rod and the elongation line of above-mentioned pipe intersect.

Owing to use the inner cylinder of enclosing fluid as mentioned above, only must adjust the pressure of enclosing fluid and just can adjust resulting from the confining force of charging pipe of described cylinder.Therefore, the fine setting from the confining force of cylinder is become easily, make charging pipe keep the processing ease of balance to carry out.Owing to can adjust above-mentioned confining force by the mat hydrodynamic pressure, can use identical cylinder in addition for various forms of automatic balance charging pipe devices with different structure, compared with the past, versatility is improved.Thereby owing to can suppress above-mentioned confining force over time by the space that makes the inclosure fluid is airtight, and the occasion that changes of the pressure in confined space, need only utilize the measure of corresponding fluid replacement, just can suppress effectively because of the long-term decreased performance that is caused of using.In addition, when requiring big confining force, often needed to increase the radical of spring 26 etc. in the past, and, just can not increase cylinder dimensions and guarantee bigger confining force when using cylinder to adjust confining force with the pressure of enclosing fluid.In view of the above, also help to reach the miniaturization of device.In addition, in conventional case owing in assembling process, need a pressure spring 26, one side with connecting pin 32 fixingly adjust joints 31, because of the compression load of spring 26 is very big, and make the assembly operation difficulty.Yet, as mentioned above, owing to used cylinder.Only need to enclose compressible fluid finishing the assembling back,, make that assembly operation is easier to carry out so compare with conventional case.

In addition, " gyration center " definable herein or be called the point that when pipe or piston rod turn round, becomes gyration center.In addition, above-mentioned " gyratory directions " definable or be called pipe and can carry out rotating direction.Therefore, this " gyratory directions " is not only the direction identical with the pipe gyratory directions, also comprises its opposite direction.

As mentioned above, contact with the pipe outer circumferential face by cylinder one end, piston is set in cylinder, an end of piston rod is linked to each other with this piston, pipe turns round around the 1st gyration center, thereby also makes cylinder, piston and piston rod revolution.At this moment, because piston rod turns round around the 2nd gyration center that is positioned at the 1st gyration center disconnected position, the track the when track when becoming the cylinder revolution turns round with piston and piston rod is different.Therefore, become, piston is moved back and forth in cylinder by the pipe revolution.And owing to enclose fluid between the other end of piston and cylinder, the position by above-mentioned the 1st, the 2nd gyration center of suitable selection makes piston move to the other end of cylinder, just can come compressed fluid with piston.Like this, because being compressed the reaction force of fluid plays a part to push piston to cylinder one end, just the confining force of this reaction force as automatic balance charging pipe device can be used, just can limit in the revolution more than the additional external force state is not being stipulated pipe.In addition, owing to make an end of cylinder link to each other, become and can turn round along the pipe gyratory directions with the pipe outer circumferential face, thus even after the pipe revolution, the axle core that can keep cylinder becomes consistent state with the axle core of piston rod.In view of the above, even after the pipe revolution, also can produce the confining force of automatic balance charging pipe device reliably with described cylinder.

Simple declaration to accompanying drawing

Fig. 1 is the fragmentary top pseudosection that part is represented automatic balance charging pipe device one embodiment of the present invention,

Fig. 2 is the side view of automatic balance charging pipe device shown in Figure 1,

Fig. 3 is the side view of traditional automatic balance charging pipe device one example of expression,

Fig. 4 is the part sectioned view of the Spring balancer internal structure of the traditional automatic balance charging pipe device use of expression.

Below, with reference to Fig. 1, Fig. 2 one embodiment of the invention is described.Fig. 1 represents automatic balance charging pipe device one embodiment's of the present invention fragmentary top pseudosection for part.

Among Fig. 1, automatic balance charging pipe device 1 has the pipe 2 that swivel joint 3 is installed on the one end.On the outer circumferential face of pipe 2, install and fix member 12,

connector element

10b, 10c and 10a are installed on this fixed component 12.To adjust screw rod 11 stubborn being connected on the connector element 10c.By connecting pin 9b connector element 10a is connected rotationally with cylinder 4.

Piston 5 is set in cylinder 4, makes it slidably.Therefore, piston 5 becomes to be positioned at the space 4c and the space 4b that is positioned at cylinder 4 the other ends of cylinder 4 one ends to the separated by spaces in the cylinder 4.Space 4c is communicated with atmosphere, in the 4b of space, encloses fluid.This fluid is preferably compressible fluids such as pressurized air, from the compressed fluid supplying mouth 4a that is arranged on cylinder 4 walls this fluid is sent into.

In addition, be preferably in be provided with on the cylinder 4 not shown, for detecting the pressure meter of space 4b internal pressure.This pressure meter is set, in space 4b internal pressure decline occasion, can in the 4b of space, suitably supply with fluid.In addition, be preferably in be installed as on the compressed fluid supplying mouth 4a make fluid only can be in the 4b of space the device that flows of direction.For example, by be provided with check valve etc. effectively suppression fluid in the 4b of space to external leaks.In addition, among Fig. 1, O shape circle is installed in the periphery of piston 5.By this O shape circle is installed, can improve sealing effect.

One end of piston rod 6 is linked to each other with piston 5, piston rod 6 is stretched out outside cylinder 4 in cylinder 4, link to each other with swivel joint 3 until the other end that makes piston rod 6.Specifically, connection wye 8 is installed on the other end of piston rod 6,, this connection wye is linked to each other pivotally with swivel joint 3 by connecting pin 9.In addition, O shape circle also can be set on the periphery of piston rod 6.Like this, O shape circle is set in the wall of cylinder 4.In addition, also can on the other end of cylinder 4, install the flexible tube 7 of retractable.

Referring now to Fig. 2 the action of automatic balance charging pipe device 1 shown in Figure 1 is described.The side view of state when Fig. 2 turns round for the pipe 2 of representing automatic balance charging pipe device 1.In addition, the downward in the direction of arrows rotating state of expression pipe 2 among Fig. 2.

As mentioned above, turn round downwards, cylinder 4, piston 5 are turned round downwards with piston rod 6 by making pipe 2.At this moment, because the other end of piston rod 6 links to each other with the arm 13 of swivel joint 3, become the 2nd gyration center C2 revolution that the 1st gyration center C1 of piston rod 6 when being positioned at pipe 2 revolutions separates the position.

Here, investigating, the some d1 of close cylinder 4 one ends is the track that mobile occasion is turned round at the center with the 1st gyration center C1 or the 2nd gyration center C2.At first, be that mobile occasion is turned round at the center at a d1 with the 1st gyration center C1, some d1 moves to d2 along circular arc 15.To this, becoming a some d1 to be that the center is turned round mobile occasion, moved to a d2 ' with the 2nd gyration center C2.Its result produces interval D between some d2 after moving and d2 '.Be that the center is turned round occasion and is that occasion is turned round at the center with the 2nd gyration center C2 with the 1st gyration center C1 exactly, position, revolution back produces skew.

As mentioned above, because an end of cylinder 4 is fixed on the outer circumferential face of pipe 2, cylinder 4 is turned round around the 1st gyration center C1 with pipe 2.To this, piston rod 6 turns round around the 2nd gyration center C2.Therefore, in occasion shown in Figure 2, by making pipe 2 revolution, becoming and make piston 5 move distance D to the other end (side of swivel joint 3) of cylinder 4.

At this, refer again to Fig. 1, as mentioned above, move to the other end of cylinder 4 by making piston 5, the fluid of enclosing in the 4b of space is compressed because of piston 5.At this moment because the space 4b that has enclosed fluid is sealed, so by piston fluid is compressed, become on piston 5, applied with conventional case in the suitable reaction force of elastic force that obtains with spring 26.In view of the above, make piston 5 bear power, just can the revolution more than the regulation of pipe 2 be limited, that is to say, can pipe 2 be maintained with cylinder 4 towards cylinder 4 one side direction effects.

In addition, owing to cylinder 4 one ends are linked to each other with pipe 2, become cylinder 4 is turned round along the gyratory directions of pipe 2 by connecting pin 9b.Equally, also can make the gyratory directions revolution of piston rod 6 along pipe 2.Therefore, even after making pipe 2 revolutions, also can be maintained in consistent with the axis of piston rod 6 axis of cylinder 4.In view of the above, just can prevent to follow the revolution of pipe 2 and the mis-behave of the cylinder 4 that produces.

In addition, also can as shown in Figure 3 Fig. 1, automatic balance charging pipe device shown in Figure 21 be installed on the stand and use.In addition, can certainly other pipe be linked to each other with pipe 2 by swivel joint.

More than one embodiment of the invention is illustrated, be limited to the example that constitutes by the premises yet must consider that disclosed embodiment has more than.The scope of the invention is by shown in its claim, and its meaning can be done all variations in the scope of the said claims.

Claims

1. automatic balance charging pipe device, comprise by be installed on the one end pipe joint and can rotating pipe, the cylinder of having enclosed fluid with inside limits the revolution more than the regulation that does not apply the above-mentioned pipe under the external force state, above-mentioned pipe is configured to and can turns round around the 1st gyration center, one end of above-mentioned cylinder links to each other with the outer circumferential face of above-mentioned pipe and above-mentioned cylinder can be turned round along described pipe gyratory directions, reciprocating piston is set in above-mentioned cylinder, and the one end is set links to each other with described piston, the other end links to each other with described pipe joint and becomes can be around the rotating piston rod of the 2nd gyration center that is positioned at described the 1st gyration center disconnected position, enclose described fluid in the space between the other end of described piston and described cylinder, it is characterized in that, from with above-mentioned cylinder, the direction that the rotation surface of above-mentioned piston rod and above-mentioned pipe is vertical sees that the elongation line of above-mentioned cylinder and above-mentioned piston rod and the elongation line of above-mentioned pipe intersect.