CN207961637U - A kind of non-return valve for sulfur hexafluoride gas - Google Patents
A kind of non-return valve for sulfur hexafluoride gas Download PDFInfo
- Publication number
- CN207961637U CN207961637U CN201721437232.9U CN201721437232U CN207961637U CN 207961637 U CN207961637 U CN 207961637U CN 201721437232 U CN201721437232 U CN 201721437232U CN 207961637 U CN207961637 U CN 207961637U
- Authority
- CN
- China
- Prior art keywords
- mandril
- hole
- seal
- sulfur hexafluoride
- section
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Valve Housings (AREA)
Abstract
The utility model discloses a kind of non-return valves for sulfur hexafluoride gas, it includes the valve body and mandril seal assembly for offering step through-hole, the mandril seal assembly is arranged in the step through-hole of valve body and sliding axially for closing and opening the step through-hole along step through-hole, in this way, mandril seal assembly is equipped with valve body, and mandril seal assembly is arranged in step through-hole, and mandril seal assembly is moved axially along step through-hole, the inlet channel for closing or being connected to valve body；When valve is closed, the spring of mandril seal assembly realizes sealing by the elastic force of its own, and when with connector or other external force open-top mandril, valve is in the open state, and air-flow passes through the venthole on mandril and realizes flowing.
Description
Technical field
The utility model belongs to high-voltage switch gear technical field, and in particular to a kind of non-return valve for sulfur hexafluoride gas.
Background technology
Sulfur hexafluoride gas Special check valve is must can not on the high-tension switch gears such as SF6 breakers, SF6 mutual inductors, GIS
Few crucial accessory, and connection SF6 density controllers, SF6 density transmitters, telemetering type SF6 density controllers, micro- water monitoring
The critical product of the on-line monitoring equipments such as equipment or offline inspection equipment；It may be implemented to height by sulfur hexafluoride gas non-return valve
Compress switch the functions such as inflation, tonifying Qi.
In the prior art, traditional sulfur hexafluoride gas non-return valve is complicated, assembly is complicated, cost is higher, non-return valve
Mandril generally use moulding mode fix, specifically ethylene-propylene diene copolymer is bonded on aluminum or Copper Parts, if bonding it is bad
Or any one technique goes wrong ethylene-propylene diene copolymer and metal parts can be made degumming, crack or latent occur during moulding
In serious quality problems such as degummings, eventually so that serious gas leakage occurs in high-voltage switch gear.
Utility model content
For overcome the deficiencies in the prior art, the purpose of the utility model is to provide a kind of for sulfur hexafluoride gas
Non-return valve.
What the technical solution of the utility model was realized in：
The utility model embodiment provides a kind of non-return valve for sulfur hexafluoride gas comprising offers step through-hole
Valve body and mandril seal assembly, the mandril seal assembly be arranged in the step through-hole of valve body and along the axis of step through-hole
To sliding for sealing the step through-hole.
Preferably, the step through-hole includes the mandril pilot hole coordinated with mandril seal assembly and switch mounting hole, institute
It states mandril pilot hole and is divided into the first cooperation section, seal section and the second cooperation section, first cooperation from inside to outside in an axial direction
The diameter of section and the second cooperation section is all higher than the diameter of seal section.
Preferably, the mandril seal assembly includes the mandril for being provided with air intake duct, elastic spring, top stem casing, spring and O
Type sealing ring, the elastic spring, top stem casing, spring and O-ring seal are set in the axial direction on mandril and along mandril successively
Arrangement, one end that the elastic spring is located at mandril are used for fixed mandril set, and the spring and O-ring seal are located at first
Section and the second cooperation section, the mandril is coordinated to be slideably positioned in mandril pilot hole for driving O-ring seal to be pasted with seal section
Tight and separation.
Preferably, the seal section of the mandril pilot hole is provided with the 90 ° of sealing surfaces coordinated with O-ring seal.
Preferably, annular fixing groove and annular seal groove, the annular fixing groove and steel wire are offered on the outside of the mandril
Baffle ring is equipped with, and the annular seal groove is equipped with O-ring seal.
Preferably, the air intake duct includes air admission hole and venthole, the air admission hole along mandril axially setting and with open
Mounting hole connection is closed, the venthole is radially arranged along mandril and is connected to air admission hole, and the venthole is located at spring and O-shaped
Between sealing ring and it is close to O-ring seal setting.
Preferably, there are two the venthole settings, two ventholes are oppositely arranged.
Preferably, the valve body is further opened with installation screw, and there are two the installation screw settings and is located at out
Close the both sides of mounting hole.
Preferably, mounting ear there are two being symmetrical arranged on the outside of the middle part of the valve body.
Compared with prior art, the utility model embodiment provides a kind of non-return valve for sulfur hexafluoride gas, packet
The valve body for offering step through-hole and mandril seal assembly are included, the mandril seal assembly is arranged in the step through-hole of valve body simultaneously
And sliding axially for sealing the step through-hole along step through-hole, in this way, mandril seal assembly is equipped with valve body, and
And mandril seal assembly is arranged in step through-hole, mandril seal assembly is moved axially along step through-hole, for closing or opening
The step through-hole of valve body；When valve is closed, the spring of mandril seal assembly realizes sealing by the elastic force of its own,
When with connector or other external force open-top mandril, valve is in the open state, and air-flow passes through the venthole on mandril and realizes stream
It is dynamic.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of non-return valve for sulfur hexafluoride gas of the utility model embodiment；
Fig. 2 is a kind of side view of non-return valve for sulfur hexafluoride gas of the utility model embodiment；
Fig. 3 is the partial enlargement at A in a kind of Fig. 1 of non-return valve for sulfur hexafluoride gas of the utility model embodiment
Figure.
Reference numeral is as follows：
1 --- valve body, 11 --- step through-hole, 12 --- switch mounting hole, 13 --- mandril pilot hole, 131 --- the
One cooperation section, 132 --- seal section, 133 --- second cooperation section, 14 --- installation screw, 2 --- mandril seal assemblies,
21 --- mandril, 211 --- annular fixing groove, 212 --- annular seal groove, 22 --- elastic spring, 23 --- top stem casing,
24 --- --- --- --- air admission hole, 262 --- venthole, 3 --- installations of air intake duct, 261 of O-ring seal, 26 of spring, 25
Ear.
Specific implementation mode
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The utility model embodiment provides a kind of non-return valve for sulfur hexafluoride gas, as shown in Figs. 1-3 comprising open
Valve body 1 equipped with step through-hole 11 and mandril seal assembly 2, the mandril seal assembly 2 are fastened on the step through-hole 11 of valve body 1
Interior and sliding axially for closing and opening the step through-hole 11 along step through-hole 11.
Mounting ear 3 there are two being symmetrical arranged on the outside of the middle part of the valve body 1.
Mounting ear 3 is for fixing check valve body 1.
Valve body 1 is used for connecting valve ontology SF6Density controller or other valves, connector.
Wherein, the step through-hole 11 includes the mandril pilot hole 13 coordinated with mandril seal assembly 2 and switch mounting hole
12, the mandril pilot hole 13 is divided into the first cooperation section 131 from inside to outside in an axial direction, seal section 132 and second coordinates section
133, the diameter of the first cooperation section 131 and second cooperation section 133 is all higher than the diameter of seal section 132.
When using valve body, Switch main body is placed in switch mounting hole 12 and is connect with valve body 1, by SF6Density controller or
Person other valves, connector are connected to the outlet end of mandril pilot hole 13.
The valve body 1 is further opened with installation screw 14, and there are two the settings of the installation screw 14 and is located at switch
The both sides of mounting hole 12.
Installation screw 14 is for fixing Switch main body.
Wherein, the mandril seal assembly 2 include be provided with the mandril 21 of air intake duct 26, elastic spring 22, top stem casing 23,
Spring 24 and O-ring seal 25, the elastic spring 22, top stem casing 23, spring 24 and O-ring seal 25 are set on mandril 21
And the axial direction along mandril 21 is arranged in order, and one end that the elastic spring 22 is located at mandril 21 covers 23 for fixed mandril, institute
It states spring 24 and O-ring seal 25 is located at the first cooperation section 131 and second cooperation section 133, the sliding setting of the mandril 21
It is interior for driving O-ring seal 25 to be adjacent to and detach with seal section 132 in mandril pilot hole 13.
For fixed mandril set 23 and mandril 21, top stem casing 23 is used to coordinate with spring 24 and drive for the setting of elastic spring 22
Mandril 21 is axially moveable, and the setting of O-ring seal 25 with the cooperation of the seal section 132 of mandril pilot hole 13 for keeping valve body close
Envelope, spring 24 are located at the both sides of seal section 132 with O-ring seal 25, can block mandril 21 and set and mandril pilot hole 13
It is interior, while the setting of spring 24 and top stem casing 23, it can exert a force and mandril 21 is driven to be axially moveable in mandril pilot hole 13, from
And realize the dynamic sealing of valve body.
Wherein, the seal section 132 of the mandril pilot hole 13 is provided with the 90 ° of sealing surfaces coordinated with O-ring seal 25.
The seal section 132 of mandril pilot hole 13 is 90 ° of sealing surfaces with the contact surface of O-ring seal 25, can be ensured to top
The leakproofness of bar pilot hole 13.
Wherein, 21 outside of the mandril offers annular fixing groove 211 and annular seal groove 212, the annular fixing groove
211 are equipped with elastic spring 22, and the annular seal groove 212 is equipped with O-ring seal 25.
The setting of annular fixing groove 211 and annular seal groove 212 can facilitate fixed elastic spring 22 and O-ring seal
25。
Wherein, air intake duct 26 includes air admission hole 261 and venthole 262, and the air admission hole 261 is axially arranged simultaneously along mandril 21
And be connected to switch mounting hole 12, the venthole 262 is connected to along the radial setting of mandril 21 and with air admission hole 261, described logical
Stomata 262 is between spring and O-ring seal and is close to O-ring seal setting；There are two the settings of the venthole 262,
Two ventholes 262 are oppositely arranged.
Air intake duct 26 is made of air admission hole 261 and venthole 262, and air admission hole 261 is connected to switch mounting hole 12, thus with
Admission line is connected to, and in the case where switching closure situation, switch does not exert a force to mandril 21, and spring 24 is in elongation state, leads at this time
Stomata 262 is located at seal section 132, and mandril 21 is bonded with seal section 132, while O-ring seal 25 is pressed in seal section 132,
Venthole 262 is in sealing state, that is, closes air intake duct 26, work as starting switch, axial direction is imposed to mandril 21 by top stem casing 23
Power, 23 compressed spring 24 of top stem casing, makes mandril 21 be displaced outwardly, to make O-ring seal 25 be detached with seal section 132, mandril
21 continue to be displaced outwardly, and when venthole 262 is detached with seal section 132, are moved to the second cooperation section 133, i.e., are connected to air intake duct.
The course of work of this programme is：When using valve body, Switch main body is placed in switch mounting hole 12 and is connected with valve body 1
It connects, by SF6Density controller or other valves, connector are connected to the outlet end of mandril pilot hole 13；Switch main body is not opened
When, valve body 1 is closed, at this point, spring 24 is in elongation state, spring 24 pushes mandril 21, bullet by top stem casing 23
24 elastic force of spring make O-ring seal 25 be pressed in mandril pilot hole 13 seal section 132 90 ° of sealing surfaces, at this point, venthole 262
By 132 inner wall sealing of seal section, to close air intake duct 26；When needing to SF6When density controller is passed through sulfur hexafluoride gas,
Switch main body, 23 stress of top stem casing are opened, compressed spring 24 makes mandril 21 move axially outward, O-ring seal 25 is made to leave
Seal section 132, mandril 21 continue to be displaced outwardly, until venthole 262 leaves seal section 132, when venthole 262 is located at the second cooperation
When section 133, since the second cooperation 133 diameter of section is more than seal section 132, venthole 262 is in the open state, to pass through air inlet
Road 26, the gas device in 1 both ends of valve body are connected to density domination gas, and valve is in the open state, and air-flow passes through on mandril
Venthole realize flowing；The utility model is simple in structure, solves degumming problem existing for moulding mode, so as to avoid latent
Gas leakage danger.
The above, the only preferred embodiment of the utility model, are not intended to limit the protection of the utility model
Range.
Claims (7)
1. a kind of non-return valve for sulfur hexafluoride gas, which is characterized in that it includes the valve body for offering step through-hole (11)
(1) it is fastened in the step through-hole (11) of valve body (1) and along platform with mandril seal assembly (2), the mandril seal assembly (2)
Rank through-hole (11) slides axially for closing and opening the step through-hole (11)；
The step through-hole (11) includes the mandril pilot hole (13) coordinated with mandril seal assembly (2) and switch mounting hole
(12), the mandril pilot hole (13) is divided into the first cooperation section (131), seal section (132) and from inside to outside in an axial direction
The diameter of two cooperation sections (133), the first cooperation section (131) and the second cooperation section (133) is all higher than the straight of seal section (132)
Diameter；
The mandril seal assembly (2) includes the mandril (21), elastic spring (22), top stem casing for being provided with air intake duct (26)
(23), spring (24) and O-ring seal (25), the elastic spring (22), top stem casing (23), spring (24) and O-ring seal
(25) it is set on mandril (21) and is arranged in order along the axial direction of mandril (21), the elastic spring (22) is located at mandril (21)
One end be used for fixed mandril set (23), the spring (24) and O-ring seal (25) be located at the first cooperation section (131) and
Second cooperation section (133), the mandril (21) be slideably positioned in mandril pilot hole (13) for drive O-ring seal (25) with
Seal section (132) is adjacent to and detaches.
2. a kind of non-return valve for sulfur hexafluoride gas according to claim 1, which is characterized in that the mandril assembly
The seal section (132) in hole (13) is provided with 90 ° of sealing surfaces with O-ring seal (25) cooperation.
3. a kind of non-return valve for sulfur hexafluoride gas according to claim 2, which is characterized in that the mandril (21)
Outside offers annular fixing groove (211) and annular seal groove (212), the annular fixing groove (211) and elastic spring (22)
It is equipped with, the annular seal groove (212) is equipped with O-ring seal (25).
4. a kind of non-return valve for sulfur hexafluoride gas according to claim 3, which is characterized in that the air intake duct
(26) include air admission hole (261) and venthole (262), the air admission hole (261) along mandril (21) axially setting and with switch
Mounting hole (12) is connected to, and the venthole (262) is radially arranged along mandril (21) and is connected to air admission hole (261), described logical
Stomata (262) is located between spring (24) and O-ring seal (25) and is close to O-ring seal (25) setting.
5. a kind of non-return valve for sulfur hexafluoride gas according to claim 4, which is characterized in that the venthole
(262) there are two setting, two ventholes (262) are oppositely arranged.
6. a kind of non-return valve for sulfur hexafluoride gas according to any one of claims 1-4, which is characterized in that institute
It states valve body (1) and is further opened with installation screw (14), there are two installation screw (14) settings and is located at switch installation
The both sides in hole (12).
7. a kind of non-return valve for sulfur hexafluoride gas according to claim 6, which is characterized in that the valve body (1)
Middle part on the outside of be symmetrical arranged there are two mounting ear (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721437232.9U CN207961637U (en) | 2017-11-01 | 2017-11-01 | A kind of non-return valve for sulfur hexafluoride gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721437232.9U CN207961637U (en) | 2017-11-01 | 2017-11-01 | A kind of non-return valve for sulfur hexafluoride gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207961637U true CN207961637U (en) | 2018-10-12 |
Family
ID=63724473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721437232.9U Active CN207961637U (en) | 2017-11-01 | 2017-11-01 | A kind of non-return valve for sulfur hexafluoride gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207961637U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553066A (en) * | 2019-09-26 | 2019-12-10 | 广东电网有限责任公司 | Check valve for gas supplementing of sulfur hexafluoride equipment |
| CN112393046A (en) * | 2020-11-12 | 2021-02-23 | 贵州电网有限责任公司 | Sulfur hexafluoride field test quick-operation joint |
-
2017
- 2017-11-01 CN CN201721437232.9U patent/CN207961637U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553066A (en) * | 2019-09-26 | 2019-12-10 | 广东电网有限责任公司 | Check valve for gas supplementing of sulfur hexafluoride equipment |
| CN112393046A (en) * | 2020-11-12 | 2021-02-23 | 贵州电网有限责任公司 | Sulfur hexafluoride field test quick-operation joint |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207961637U (en) | A kind of non-return valve for sulfur hexafluoride gas | |
| CN201795113U (en) | Special SF6 gas valve | |
| CN103325557A (en) | Voltage transformer for GIS (Gas Insulated Switchgear) | |
| CN204176030U (en) | For the calibration valve of SF6 gas assembly apparatus | |
| CN104143409B (en) | A kind of without lubricating cup self-desiccation respirator | |
| CN106512595B (en) | The filter device of solid impurity in a kind of gas | |
| CN206301727U (en) | A kind of time delay ecp stacked switch | |
| CN203084146U (en) | SF6 gas insulation high voltage electrical apparatus-used insulating part partial discharge test device | |
| CN104879563A (en) | Flow limiting valve of air filter | |
| CN107327583A (en) | Gas charge valve | |
| CN204405385U (en) | The full-automatic sampling apparatus of a kind of sulfur hexafluoride gas | |
| CN105244641A (en) | Cable connection terminal insulation protective device | |
| CN205689852U (en) | A kind of relief valve | |
| CN209725267U (en) | A kind of high-pressure aerated effective relief valve | |
| CN104061341A (en) | Multifunctional SF6 valve with temperature compensation and high sealing performance | |
| CN203641585U (en) | Instrument adjusting valve for high-voltage switches of GIS (gas insulated switchgear) | |
| CN104879763B (en) | A kind of baffle door | |
| CN220061453U (en) | GIS multi-air-chamber vacuumizing and inflating conversion equipment | |
| CN103206550B (en) | Stop valve for air conditioners | |
| CN206130352U (en) | Sealing joint controller | |
| CN202523511U (en) | Air exhaust plug | |
| CN201133478Y (en) | Butterfly valve body dynamic seal ring indicating device | |
| CN205244507U (en) | Automatically controlled aeration valve of SF6 electrical equipment | |
| CN204459217U (en) | A kind of Double-disc type hydraulic pressure opening valve | |
| CN210269788U (en) | SF with air supply self-sealing valve6Sensor probe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |