CN201121727Y

CN201121727Y - Gas pumping and inflating bidirectional self-sealing valve

Info

Publication number: CN201121727Y
Application number: CNU2007200415202U
Authority: CN
Inventors: 王士年; 周永成; 郭永军; 王耀
Original assignee: JIANGSU BAOSHENG ELECTRICAL CO Ltd
Current assignee: JIANGSU BAOSHENG ELECTRICAL CO Ltd
Priority date: 2007-11-22
Filing date: 2007-11-22
Publication date: 2008-09-24
Anticipated expiration: 2017-11-22

Abstract

The utility model relates to a bi-directional self-sealing valve used for gas pumping and charging, and belongs to the high voltage switchgear technical field. The bi-directional self-sealing valve is mainly characterized in that one end of the self-sealing valve is screwed with a pumping/charging connect valve, after being connected, the valve cores of the self-sealing valve and the pumping/charging connect valve respectively and axially move toward each other, and the springs of the self-sealing valve and the pumping/charging connect valve are compressed, so as to enable the wall holes communicated with the axial holes on the valve core walls thereof to move away from the sealing part, thereby forming a smooth gas passage comprising a self-sealing axial hole, a valve core wall hole, a valve core axial hole, a valve core axial hole, a valve core wall hole and a pumping/charging connect valve axial hole in order; once fastening nuts are loosened, the pumping/charging connect valve is taken off, the compressed springs stretch due to the non-existing of the external force, the valve cores are reset, and the wall holes on the valve cores are sealed. The bi-directional self-sealing valve is applied to the vacuum pumping of a three phase integral charging compartment as well as the infill injection of insulating medium, and is also applied to other pumping/charging occasions.

Description

Gas pumping-charging bidirectional self-sealing valve

Technical field

The utility model relates to a kind of gas pumping-charging bidirectional self-sealing valve, be used for three-phase integrated charging compartment vacuumize and insulating medium fills, also can be used for the occasion that other need take out inflation, belong to the parts in the high-tension switch gear technical field.

Background technique

The C-GIS high-tension switch gear is the new high-tech product that newly-developed gets up; it is a kind of gas isolated switch cubicle that utilizes; relate to multinomial technical field, merged the insulation technology of low-pressure SF6 gas, sealing technique, laser welding technology, heat dissipation technology, the technology of cut-offfing of vacuum interrupter, novel sensory technique, solid interface insulation and the connection technique and the multinomial technology such as Digital Control, protection and surveillance technology of charging compartment.Development was very fast in the world in recent years for the C-GIS high-tension switch gear, had formed seriation, informationalized new high-tech product, and had become an important branch of metal enclosed switchgear gradually.

The C-GIS high-tension switch gear is owing to adopt the SF6 gas of excellent insulation performance to insulate, and a main unit is sealed in the charging compartment, be not subjected to the influence of external environment condition, so its outstanding advantage is product miniaturization, operating mode operation entirely, reliability height, safe.

For the C-GIS high-tension switch gear, its core component is a three-phase integrated charging compartment, and the insulating property of equipment are guaranteed by the density of the insulating gas of three-phase integrated charging compartment inside fully.Usually adopt the self-styled valve that is fixed on that three-phase integrated charging compartment is vacuumized earlier, and then it is filled to carry out the insulating gas medium in tank wall the hole in.

The structure of existing self-styled valve mainly is made of valve body, spool, seal ring and stage clip, stage clip places in the valve body chamber, spool also places in the valve body chamber and compresses stage clip, and its two seals circle is set on the external diameter of valve body, and in use there is following defective in the self-styled valve of this structure:

1) sealing of valve and tank wall rely on the double-layer seal circle respectively with the incompatible realization that matches of the hole of the seal groove of valve body, tank wall, if seal ring cooperates tightr with the hole of tank wall, then when assembling, can seal ring be destroyed because of the too small undue crush seal circle in the hole of tank wall, on the contrary, when the two cooperated than pine, sealing effect was bad.Cooperating naturally of the simple hole that relies on seal ring and tank wall, can not satisfy the charging compartment requirement of (30 years) high-air-tightness for a long time.

2) when taking out inflation, form air-flow path, spool should be pushed up to the valve body middle part than the macroporous cavity place, this moment, air-flow can only pass through in the pitch relief by stage clip, and stage clip is compressed at this moment, and pitch relief is less, this has hindered effectively passing through of air-flow greatly, test shows, the taking out of this valve filled efficient lower (finish taking out of 1 charging compartment fill approximately need 4 hours), is unfavorable for industrialized production.

3) after inflation is finished, air pressure in the gas tank higher (outside atmosphere is pressed with the pressure reduction of 0.4mbar relatively), remove in the process of gas charging valve, gas still can discharge via air-flow path, this not only can cause the waste of gas-insulated medium, and the more important thing is that highpressure can damage operator.

The model utility content

The purpose of this utility model provides a kind of gas pumping-charging bidirectional self-sealing valve, solve the above-mentioned defective that existing self-styled valve exists because of its structural factor, realize both having guaranteed the unimpeded inflation fundamental function of taking out, and can guarantee to take out the tightness of inflating in the overall process, ensure safety of operators.

The purpose of this utility model is achieved through the following technical solutions, and a kind of gas pumping-charging bidirectional self-sealing valve is characterized in that described bidirectional self-sealing valve fills joint valve by taking out of spinning of self-styled valve and self-styled valve one end and constitutes; Self-styled valve is made of valve body, spool, interstage sleeve, stage clip; Insert interstage sleeve in the shoulder hole of valve body, insert seal ring respectively in the twice groove of interstage sleeve outer wall, insert stopper ring in the valve interior wall groove of interstage sleeve outer side, pass spool in the vestibule of interstage sleeve, spool has axial bore, limit till one end, has the cinclides that communicates with axial bore on the core wall on nearly only limit, spool inserts the axial bore of interstage sleeve, it ends seal ring is set in the limit, and the valve core upper sleeve of interstage sleeve one side is put stage clip 1, and the spool close end is nested with back-up ring, back-up ring and valve core chamber are provided with stopper ring, the end face that valve body and tank wall are close to, fill the end face that joint valve is close to seal ring is set respectively with taking out; Take out and fill joint valve and constitute by valve body, spool, tightening nut, stage clip, back-up ring; The inwall of valve body is provided with boss, spool has axial bore, and limit till the end closely only has the cinclides that communicates with axial bore on the core wall on limit, spool inserts the endoporus of valve body boss, it ends seal ring is set in the limit, and the valve core upper sleeve of boss inboard is put stage clip, and the spool close end is nested with back-up ring, back-up ring and valve core chamber are provided with stopper ring, tightening nut is nested with the bar portion at valve body, in the groove of bar portion stopper ring is set, and in the groove of valve body bar portion close end seal ring is set.

Self-styled valve with take out the connecting end that fills joint valve and have with taking out and fill the outside thread that the joint valve tightening nut matches.

Self-styled valve, take out the same external diameter in spool connecting part that fills joint valve, same aperture.

The utility model is the improvement to the self-styled valve arrangement on the existing three-phase integrated charging compartment tank wall, filling joint valve by taking out of spinning of a self-styled valve and an end constitutes, self-styled valve, take out and fill joint valve after connection, spool separately moves respectively vertically in opposite directions, compression stage clip separately, make the cinclides that communicates with its axial bore on the core wall separately leave sealing place, form one by self-styled valve axial bore-spool cinclides-spool axial bore-spool axial bore-spool cinclides-take out and fill the unimpeded air-flow path of joint valve axial bore; Be fastenedly connected nut in case unclamp, remove to take out and fill joint valve, each stage clip loses external force and upholds, each valve core reset, and the cinclides on each spool is closed.

The utility model two parts in smoking gas replenishment process are used, and self-styled valve is installed on the tank wall of charging compartment, sells together to the user in company with the charging compartment product, take out and fill joint valve then as special tooling in the factory.

Description of drawings

Fig. 1 is a self-styled valve arrangement schematic representation in the utility model;

Fig. 2 fills the joint valve structural representation for taking out in the utility model;

Fig. 3 is self-styled valve of the utility model and the structural representation of taking out when filling joint valve and cooperating;

Among the figure, 1 tightening nut, 2 dish springs, 3 valve bodies, 4 seal rings, 5 spools, 6 seal rings, 7 interstage sleeves, 8 seal rings, 9 stopper rings, 10 stage clips, 11 back-up rings, 12 stopper rings, 13 seal rings, 14 seal rings, 15 stopper rings, 16 back-up rings, 17 stage clips, 18 stopper rings, 19 tightening nuts, 20 spools, 21 seal rings, 22 valve bodies.

Embodiment

Further specify the utility model in conjunction with the accompanying drawings and embodiments, as shown in Figure 3, the utility model is by self-styled valve and take out and fill joint valve and constitute, self-styled valve and take out and fill joint valve and spin through taking out the tightening nut 19 that fills on the joint valve, self-styled valve, taking out the spool 5 and the spool 20 that fill in the joint valve moves respectively vertically in opposite directions, compression stage clip 10 separately, 17, make the cinclides that communicates with its axial bore on the core wall separately leave sealing place, form one by self-styled valve axial bore-spool 5 cinclides-spool 5 axial bores-spool 20 axial bores-spool 20 cinclides-take out and fill the unimpeded air-flow path of joint valve axial bore, implement to take out the inflation body.In case unclamp tightening nut 19, remove to take out and fill joint valve,

stage clip

10,17 loses external force and upholds, spool 5 and spool 20 returns, cinclides separately is closed.Self-styled valve body 3 with take out the connecting end that fills joint valve valve body 22 and have with taking out and fill the outside thread that joint valve tightening nut 19 matches.Self-styled valve, structure, the size of taking out the

spool

5,20 that fills joint valve are identical,

stage clip

10,17 structure, size, performance parameter all identical.

As shown in Figure 1, self-styled valve in the utility model is by valve body 3, spool 5, interstage sleeve 7, stage clip 10 constitutes, insert interstage sleeve 7 in the shoulder hole of valve body 3, insert seal ring 8 respectively in the twice groove of interstage sleeve 7 outer walls, insert stopper ring 9 in valve body 3 inboard wall grooves of interstage sleeve 7 outer side, the spool 5 that passes in the vestibule of interstage sleeve 7, spool 5 has axial bore, limit till one end, has the cinclides that communicates with axial bore on the core wall on nearly only limit, spool 5 inserts the axial bore of interstage sleeve 7, it ends seal ring 6 is set in the limit, is nested with stage clip 10 on the spool 5 of interstage sleeve 7 one sides, and spool 5 close ends are nested with back-up

ring

11,5 of back-up ring 11 and spools are provided with stopper ring 12, the end face that valve body 3 and tank wall are close to, fill the end face that joint valve is close to seal ring 4 is set respectively with taking out, 13; During use, self-styled valve one end is from tank wall extrapolation cartonning cinclides, and tightening nut 1 compressing dish spring 2 fixing self-styled valves spin in case.

As shown in Figure 2, taking out in the utility model filled joint valve by valve body 22, spool 20, tightening nut 19, stage clip 17, back-up ring 16 constitutes, the inwall of valve body 22 is provided with boss, spool 20 has axial bore, limit till one end, has the cinclides that communicates with axial bore on the core wall on nearly only limit, spool 20 inserts the endoporus of valve body 22 boss, it ends seal ring 21 is set in the limit, is nested with stage clip 17 on the spool 20 of boss inboard, and spool 20 close ends are nested with back-up

ring

16,20 of back-up ring 16 and spools are provided with stopper ring 15, tightening nut 19 is nested with the bar portion at valve body 22, and stopper ring 18 is set in the groove of bar portion, in the groove of valve body 22 bar portion close ends seal ring 14 is set.

Claims

1, a kind of gas pumping-charging bidirectional self-sealing valve is characterized in that described bidirectional self-sealing valve fills joint valve by taking out of spinning of self-styled valve and self-styled valve one end and constitutes.

2, gas pumping-charging bidirectional self-sealing valve according to claim 1 is characterized in that self-styled valve is made of valve body, spool, interstage sleeve, stage clip; Insert interstage sleeve in the shoulder hole of valve body, insert seal ring respectively in the twice groove of interstage sleeve outer wall, insert stopper ring in the valve interior wall groove of interstage sleeve outer side, pass spool in the vestibule of interstage sleeve, spool has axial bore, limit till one end, has the cinclides that communicates with axial bore on the core wall on nearly only limit, spool inserts the axial bore of interstage sleeve, it ends seal ring is set in the limit, and the valve core upper sleeve of interstage sleeve one side is put stage clip, and the spool close end is nested with back-up ring, back-up ring and valve core chamber are provided with stopper ring, the end face that valve body and tank wall are close to, fill the end face that joint valve is close to seal ring is set respectively with taking out.

3, gas pumping-charging bidirectional self-sealing valve according to claim 1 is characterized in that taking out and fills joint valve and be made of valve body, spool, tightening nut, stage clip, back-up ring; The inwall of valve body is provided with boss, spool has axial bore, and limit till the end closely only has the cinclides that communicates with axial bore on the core wall on limit, spool inserts the endoporus of valve body boss, it ends seal ring is set in the limit, and the valve core upper sleeve of boss inboard is put stage clip, and the spool close end is nested with back-up ring, back-up ring and valve core chamber are provided with stopper ring, tightening nut is nested with the bar portion at valve body, in the groove of bar portion stopper ring is set, and in the groove of valve body bar portion close end seal ring is set.

4, gas pumping-charging bidirectional self-sealing valve according to claim 1 is characterized in that self-styled valve body and takes out the connecting end that fills the joint valve valve body and have with taking out and fill the outside thread that the joint valve tightening nut matches.

5, gas pumping-charging bidirectional self-sealing valve according to claim 1 is characterized in that self-styled valve, takes out the same external diameter in spool connecting part that fills joint valve, same aperture.