CN214542002U - Inflation valve for sulfur hexafluoride switch and sulfur hexafluoride switch - Google Patents
Inflation valve for sulfur hexafluoride switch and sulfur hexafluoride switch Download PDFInfo
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- CN214542002U CN214542002U CN202120036366.XU CN202120036366U CN214542002U CN 214542002 U CN214542002 U CN 214542002U CN 202120036366 U CN202120036366 U CN 202120036366U CN 214542002 U CN214542002 U CN 214542002U
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- hexafluoride switch
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- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 title claims abstract description 91
- 229960000909 sulfur hexafluoride Drugs 0.000 title claims abstract description 91
- 229910018503 SF6 Inorganic materials 0.000 title claims abstract description 87
- 238000007789 sealing Methods 0.000 claims abstract description 113
- 230000002093 peripheral effect Effects 0.000 claims abstract description 6
- 230000002349 favourable effect Effects 0.000 description 11
- 230000000694 effects Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000003754 machining Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Abstract
The utility model relates to a gas charging valve and sulfur hexafluoride switch for sulfur hexafluoride switch. An inflation valve for a sulfur hexafluoride switch, comprising: the sulfur hexafluoride switch valve comprises a valve main body, wherein an inflation channel is arranged on the valve main body and is used for communicating the inside and the outside of an air chamber of the sulfur hexafluoride switch; the valve core assembly is arranged in the inflation channel and used for opening the inflation channel under the action of external force; the external thread is arranged on the outer peripheral surface of the valve main body, the sulfur hexafluoride switch inflation valve further comprises a sealing nut, a thread blind hole is formed in the sealing nut, and the thread blind hole is used for being in threaded connection with the external thread of the valve main body; the inflation valve for the sulfur hexafluoride switch further comprises an annular sealing piece, and the annular sealing piece is used for sealing between the opening end of the sealing nut and the air chamber wall of the sulfur hexafluoride switch. Above-mentioned scheme can solve current inflation valve problem with high costs.
Description
Technical Field
The utility model relates to a gas charging valve and sulfur hexafluoride switch for sulfur hexafluoride switch.
Background
Most of column switches adopted by the operation of 10kV outdoor lines of distribution networks in China are sulfur hexafluoride switches, sulfur hexafluoride gas is used as an arc extinguishing or insulating medium, and the method has the characteristics of less maintenance or no maintenance and the like. When the sulfur hexafluoride switch is used, sulfur hexafluoride gas with certain pressure needs to be filled into the gas tank of the sulfur hexafluoride switch, so that an inflation valve needs to be arranged on the gas tank. The existing inflation valve is, for example, a sulfur hexafluoride inflation plug device of a high-voltage circuit breaker disclosed in chinese patent publication No. CN201289813Y, a conical plug is provided therein, a thimble is provided on the conical plug, the thimble drives the conical plug to open under the action of an external force during inflation, so that inflation can be performed, and after inflation is completed, the conical plug is reset under the action of a spring to close an air passage, thereby performing a sealing function.
The sealing performance of the gas charging valve is very important, since sulfur hexafluoride plays a critical role in the insulation of the switchgear. However, the existing inflation valve for the sulfur hexafluoride switch has a single sealing structure, and is high in manufacturing cost in order to ensure the sealing performance.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sulfur hexafluoride is inflation valve for switch solves current inflation valve problem with high costs. Additionally, another object of the present invention is to provide a sulfur hexafluoride switch, which solves the problem of high overall cost due to the high cost of the inflation valve.
The utility model discloses in a gas charging valve for sulfur hexafluoride switch adopts following technical scheme:
an inflation valve for a sulfur hexafluoride switch, comprising:
the sulfur hexafluoride switch valve comprises a valve main body, wherein an inflation channel is arranged on the valve main body and is used for communicating the inside and the outside of an air chamber of the sulfur hexafluoride switch;
the valve core assembly is arranged in the inflation channel and used for opening the inflation channel under the action of external force;
the external thread is arranged on the outer peripheral surface of the valve main body, the sulfur hexafluoride switch inflation valve further comprises a sealing nut, a thread blind hole is formed in the sealing nut, and the thread blind hole is used for being in threaded connection with the external thread of the valve main body;
the inflation valve for the sulfur hexafluoride switch further comprises an annular sealing piece, and the annular sealing piece is used for sealing between the opening end of the sealing nut and the air chamber wall of the sulfur hexafluoride switch.
Has the advantages that: adopt above-mentioned technical scheme, the case subassembly can form first order sealed at the inflation channel in the valve main part, and be equipped with sealing nut through the external screw thread on the valve main part outer peripheral face, sealing nut can form the second level through annular seal spare and gas chamber wall and seal, can exert sealed effect jointly through the two-stage seal, and can protect the case subassembly, thereby can guarantee sealed effect, compare with prior art, be favorable to reducing the requirement to machining precision and material, thereby be favorable to reducing the processing cost.
As a preferred technical scheme: the valve body is provided with a shaft shoulder which is used for supporting the gas chamber wall of the sulfur hexafluoride switch;
the inflation valve for the sulfur hexafluoride switch further comprises:
the locking nut is connected to the valve main body in a threaded mode and clamps the air chamber wall of the sulfur hexafluoride switch together with the shaft shoulder;
and the shaft shoulder sealing element is used for sealing between the shaft shoulder and the air chamber wall of the sulfur hexafluoride switch.
Has the advantages that: by adopting the technical scheme, the structure is simple, the independent processing of the valve main body is convenient, and the installation of the inflation valve can be conveniently realized.
As a preferred technical scheme: the shoulder is disposed at an inner end of the valve body.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to shortening the length of valve main part.
As a preferred technical scheme: the trompil on the sealing nut is the shoulder hole, including the screw hole section with dodge the hole section, the screw hole section forms screw thread blind hole, the internal diameter of dodging the hole section is greater than the screw hole section, is used for dodging lock nut.
Has the advantages that: by adopting the technical scheme, the sealing nut can be matched with the valve main body, namely the outline of the locking nut, as far as possible, and the size of the sealing nut is favorably reduced.
As a preferred technical scheme: the stepped hole further comprises a sealing section, the sealing section is located on one side, far away from the threaded hole section, of the avoiding hole section, a sealing groove is formed, and the annular sealing element is mounted.
Has the advantages that: by adopting the technical scheme, the processing is convenient, and the cost is more favorably reduced.
As a preferred technical scheme: the inflation valve for the sulfur hexafluoride switch further comprises a spring washer, wherein the spring washer is arranged on the outer side of the locking nut and used for being arranged between the sealing nut and the locking nut in a cushioning mode.
Has the advantages that: by adopting the technical scheme, the locking of the locking nut is facilitated, so that the reliability can be improved.
As a preferred technical scheme: the shaft shoulder is provided with an annular groove, and the shaft shoulder sealing element is assembled in the annular groove.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to guaranteeing sealed effect.
As a preferred technical scheme: the outermost end of the valve body is provided with a neck section.
Has the advantages that: adopt above-mentioned technical scheme to be convenient for sealing nut's installation.
As a preferred technical scheme: and a small-diameter section is arranged at one end of the sealing nut, which faces away from the open end.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to reducing the whole overall dimension of inflation valve.
The utility model discloses well sulfur hexafluoride switch adopts following technical scheme:
the sulfur hexafluoride switch comprises an air box, and an inflation valve is arranged on the wall of the air box;
the inflation valve includes:
the sulfur hexafluoride switch valve comprises a valve main body, wherein an inflation channel is arranged on the valve main body and is used for communicating the inside and the outside of an air chamber of the sulfur hexafluoride switch;
the valve core assembly is arranged in the inflation channel and used for opening the inflation channel under the action of external force;
the external thread is arranged on the outer peripheral surface of the valve main body, the sulfur hexafluoride switch inflation valve further comprises a sealing nut, a thread blind hole is formed in the sealing nut, and the thread blind hole is used for being in threaded connection with the external thread of the valve main body;
the inflation valve for the sulfur hexafluoride switch further comprises an annular sealing piece, and the annular sealing piece is used for sealing between the opening end of the sealing nut and the air chamber wall of the sulfur hexafluoride switch.
Has the advantages that: adopt above-mentioned technical scheme, the case subassembly can form first order sealed at the inflation channel in the valve main part, and be equipped with sealing nut through the external screw thread on the valve main part outer peripheral face, sealing nut can form the second grade through ring packing spare and gas chamber wall and seal, can exert sealed effect jointly through the two-stage seal, and can protect the case subassembly, thereby can guarantee sealed effect, compare with prior art, be favorable to reducing the requirement to machining precision and material, thereby be favorable to reducing the processing cost, and then reduce the overall cost of sulfur hexafluoride switch.
As a preferred technical scheme: the valve body is provided with a shaft shoulder which is used for supporting the gas chamber wall of the sulfur hexafluoride switch;
the inflation valve for the sulfur hexafluoride switch further comprises:
the locking nut is connected to the valve main body in a threaded mode and clamps the air chamber wall of the sulfur hexafluoride switch together with the shaft shoulder;
and the shaft shoulder sealing element is used for sealing between the shaft shoulder and the air chamber wall of the sulfur hexafluoride switch.
Has the advantages that: by adopting the technical scheme, the structure is simple, the independent processing of the valve main body is convenient, and the installation of the inflation valve can be conveniently realized.
As a preferred technical scheme: the shoulder is disposed at an inner end of the valve body.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to shortening the length of valve main part.
As a preferred technical scheme: the trompil on the sealing nut is the shoulder hole, including the screw hole section with dodge the hole section, the screw hole section forms screw thread blind hole, the internal diameter of dodging the hole section is greater than the screw hole section, is used for dodging lock nut.
Has the advantages that: by adopting the technical scheme, the sealing nut can be matched with the valve main body, namely the outline of the locking nut, as far as possible, and the size of the sealing nut is favorably reduced.
As a preferred technical scheme: the stepped hole further comprises a sealing section, the sealing section is located on one side, far away from the threaded hole section, of the avoiding hole section, a sealing groove is formed, and the annular sealing element is mounted.
Has the advantages that: by adopting the technical scheme, the processing is convenient, and the cost is more favorably reduced.
As a preferred technical scheme: the inflation valve for the sulfur hexafluoride switch further comprises a spring washer, wherein the spring washer is arranged on the outer side of the locking nut and used for being arranged between the sealing nut and the locking nut in a cushioning mode.
Has the advantages that: by adopting the technical scheme, the locking of the locking nut is facilitated, so that the reliability can be improved.
As a preferred technical scheme: the shaft shoulder is provided with an annular groove, and the shaft shoulder sealing element is assembled in the annular groove.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to guaranteeing sealed effect.
As a preferred technical scheme: the outermost end of the valve body is provided with a neck section.
Has the advantages that: adopt above-mentioned technical scheme to be convenient for sealing nut's installation.
As a preferred technical scheme: and a small-diameter section is arranged at one end of the sealing nut, which faces away from the open end.
Has the advantages that: adopt above-mentioned technical scheme to be favorable to reducing the whole overall dimension of inflation valve.
For the subject to be protected by the present patent, each preferred technical solution under the same subject may be adopted alone, and when the preferred technical solutions under the same subject can be combined, two or more preferred technical solutions under the same subject may be arbitrarily combined, and the technical solutions formed by the combination are not specifically described here, and are included in the description of the present patent in this form.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment 1 of an inflation valve for a sulfur hexafluoride switch according to the present invention;
fig. 2 is a schematic view of the valve body of fig. 1.
The names of the components corresponding to the corresponding reference numerals in the drawings are: 10. a valve body; 11. a hollow cylinder; 12. a shaft shoulder; 13. an inflation channel; 14. a sealing groove; 15. a shoulder seal; 16. a valve core stopping table; 17. a necking section; 20. a valve core assembly; 21. a thimble; 30. locking the nut; 31. a spring washer; 40. a sealing nut; 41. a threaded bore section; 42. avoiding a hole section; 43. a sealing section; 44. an annular seal; 45. a small diameter section.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as the terms first and second, and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, the statement that "comprises an … …" is intended to indicate that there are additional elements of the same process, method, article, or apparatus that comprise the element.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
In the description of the present invention, unless otherwise explicitly specified or limited, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.
The present invention will be described in further detail with reference to examples.
The utility model discloses in embodiment 1 of a sulfur hexafluoride inflation valve for switch:
as shown in fig. 1, the inflation valve for the sulfur hexafluoride switch is an inflation valve for a 10kV outdoor column switch device, is used for being mounted on an air chamber wall of a 10kV outdoor column sulfur hexafluoride switch, and comprises a valve main body 10, a valve core assembly 20, a lock nut 30 and a sealing nut 40.
As shown in fig. 2, the valve body 10 is a T-shaped structure, and includes a hollow cylinder 11, an external thread is provided on the outer circumferential surface of the hollow cylinder 11, a shoulder 12 is provided at the innermost end, and the shoulder 12 is a flange structure. The center of the valve main body 10 is provided with an axial through hole, the axial through hole forms an inflation channel 13, and the inflation channel 13 is used for communicating the inside and the outside of an air chamber of the sulfur hexafluoride switch. An annular sealing groove 14 is arranged on the outer side end face of the shaft shoulder 12, the sealing groove 14 is an annular groove, a shaft shoulder sealing element 15 is arranged in the annular groove, and the shaft shoulder sealing element 15 is a sealing ring. During assembly, the valve body 10 is mounted outwards from the inner side of the air chamber, the outer end of the valve body penetrates outwards from the wall of the air chamber and is fixed to the wall of the air chamber through a locking nut 30, the locking nut 30 is a brass nut and is in threaded connection with the valve body 10, and the locking nut and the shaft shoulder 12 clamp the wall of the air chamber of the sulfur hexafluoride switch together. In order to facilitate the tightening of the lock nut 30, a wrenching plane is provided on the outer circumferential surface of the hollow cylinder 11.
As shown in fig. 2, a valve core stopper 16 is disposed in the hollow cylinder 11 of the valve body 10, and an internal thread is disposed at an outer end of the hollow cylinder 11. The valve core assembly 20 is a unitary assembly that is integrally attached to internal threads within the valve body 10 via external threads during assembly. The front end of the valve core assembly 20 is provided with an ejector pin 21, when the ejector pin 21 is pushed inwards, the valve core in the valve core assembly 20 is separated from the valve core stopping table 16, so that the inflation channel 13 is opened, the inside and the outside of the air chamber of the sulfur hexafluoride switch are communicated, and the inflation effect can be realized. After the pushing force of the thimble 21 disappears, the valve core automatically resets and is in sealing fit with the valve core stopping table 16, the inflation channel 13 is closed, and air leakage is avoided. The valve core assembly 20 may be a valve core assembly 20 of the prior art, such as an inflation valve on a vehicle tire. Of course, in other embodiments, corresponding components in the valve core assembly 20 can be assembled on the valve body 10 to perform the opening and closing functions of the valve core assembly.
As shown in fig. 1, the sealing nut 40 is provided with an opening, which is a stepped hole in the form of a blind hole, and includes a threaded hole section 41, an avoiding hole section 42 and a sealing section 43 in sequence from inside to outside. The threaded hole section 41 forms a threaded blind hole for threaded connection to the external thread of the valve body 10; the inner diameter of the avoiding hole section 42 is larger than that of the threaded hole section 41, and the avoiding hole section is used for avoiding the locking nut 30; the sealing section 43 is located outside the bypass hole section 42 to form a sealing groove 14 for mounting the annular sealing member 44. The opening end of the sealing nut 40 is provided with a sealing groove 14, an annular sealing element 44 is arranged in the sealing groove 14, and the annular sealing element 44 is used for sealing between the air chamber wall of the sulfur hexafluoride switch and the sealing nut 40 when the sealing nut 40 is screwed onto the valve main body 10. The outermost end of valve main part 10 is equipped with necking down section 17, can be convenient for sealing nut 40's installation, sealing nut one end of trompil end dorsad is equipped with minor diameter section 45, is favorable to reducing the whole axial dimensions of inflation valve. Of course, in order to facilitate the assembly and disassembly of the sealing nut 40, the sealing nut 40 is provided with a wrenching plane, which is provided on the small diameter section 45 of the sealing nut in this embodiment. In order to play a role in preventing looseness and avoid loosening of the sealing nut, the inflation valve for the sulfur hexafluoride switch further comprises a spring washer 31, and the spring washer 31 is arranged on the outer side of the locking nut 30 and used for being arranged between the sealing nut 40 and the locking nut 30 in a cushioning mode.
Before installing the inflation valve for the sulfur hexafluoride switch, firstly, cleaning the annular sealing piece 44 and the shaft shoulder sealing piece 15 and wiping the sealing surface, then, taking the cleaned O-shaped sealing ring as the shaft shoulder sealing piece 15, coating silicone grease, installing the O-shaped sealing ring in the sealing groove 14 on the shaft shoulder 12, then, penetrating the inflation valve outwards from the inside of an air box formed by the switch shell, and fastening the inflation valve at the outer side of the air box through the locking nut 30. During inflation, the ejector pin 21 on the valve core assembly 20 is jacked open by the inflation tool, so that the inflation channel 13 is opened, and ventilation can be realized; after the inflation is finished, the inflation tool is removed, and the valve core assembly 20 is reset to prevent internal gas leakage. After the inflation is completed, in order to prevent the possible leakage of a minute gas, a sealing nut 40 is additionally provided outside the inflation valve, and an O-ring is used as an annular sealing member 44 for sealing. And finishing the installation of the inflation valve for the sulfur hexafluoride switch.
The utility model discloses embodiment 2 of well inflation valve for sulfur hexafluoride switch:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the sealing groove on the opening end of the sealing nut is formed by a sealing segment formed by a stepped hole, while in this embodiment, the sealing groove is an annular groove on the end face of the opening end of the sealing nut and has inner and outer groove sidewalls.
The utility model discloses embodiment 3 of well inflation valve for sulfur hexafluoride switch:
the present embodiment is different from embodiment 1 in that in embodiment 1, the shoulder seal is a seal ring, and in this embodiment, the shoulder seal 15 is a seal gasket.
The utility model discloses embodiment 4 of well inflation valve for sulfur hexafluoride switch:
the difference between this embodiment and embodiment 1 is that in embodiment 1, the annular sealing member at the opening end of the sealing nut is a sealing ring, and in this embodiment, a sealing gasket is used as the annular sealing member.
The utility model discloses embodiment 5 of well inflation valve for sulfur hexafluoride switch:
the difference between this embodiment and embodiment 1 is that in embodiment 1, a shoulder 12 is provided on the valve main body 10, the shoulder 12 is located at the inner end of the valve main body 10 and is installed on the gas chamber wall of the sulfur hexafluoride switch through the shoulder 12, and in this embodiment, the valve main body 10 is fixed on the gas chamber wall of the sulfur hexafluoride switch by welding and forms a seal by welding. Of course, the lock nut 30 is not required to be provided at this time, and thus the blind threaded hole of the seal nut 40 may be a constant diameter hole. In other embodiments, the shoulder 12 may be disposed in the middle of the valve body 10 when mounted as the shoulder 12. Additionally, in other embodiments, the shoulder 12 on the valve body 10 may be replaced with a nut.
The utility model discloses embodiment 6 of well inflation valve for sulfur hexafluoride switch:
the difference between this embodiment and embodiment 1 is that in embodiment 1, an axial through hole is formed in the center of the valve main body 10, and the axial through hole forms the inflation channel 13, whereas in this embodiment, the axial hole in the valve main body 10 is a blind hole, the inner end is a closed structure, a radial hole communicated with the blind hole is formed on the outer side surface of the inner end, and the radial hole and the blind hole together form the inflation channel.
The utility model discloses embodiment of well sulfur hexafluoride switch: the sulfur hexafluoride switch comprises an air tank, wherein an inflation valve is arranged on the wall of the air tank, and the inflation valve is the inflation valve recorded in any embodiment of the inflation valve for the sulfur hexafluoride switch, and is not specifically described here.
The above description is only a preferred embodiment of the present application, and not intended to limit the present application, the scope of the present application is defined by the appended claims, and all changes in equivalent structure made by using the contents of the specification and the drawings of the present application should be considered as being included in the scope of the present application.
Claims (10)
1. An inflation valve for a sulfur hexafluoride switch, comprising:
the sulfur hexafluoride switch valve comprises a valve main body (10), wherein an inflation channel (13) is arranged on the valve main body (10), and the inflation channel (13) is used for communicating the inside and the outside of an air chamber of the sulfur hexafluoride switch;
the valve core assembly (20) is arranged in the inflation channel (13) and is used for opening the inflation channel (13) under the action of external force;
the external thread is arranged on the peripheral surface of the valve main body (10), the sulfur hexafluoride switch inflation valve further comprises a sealing nut (40), a threaded blind hole is formed in the sealing nut (40), and the threaded blind hole is used for being in threaded connection with the external thread of the valve main body (10);
the gas charging valve for the sulfur hexafluoride switch further comprises an annular sealing piece (44), and the annular sealing piece (44) is used for sealing between the opening end of the sealing nut (40) and the wall of the gas chamber of the sulfur hexafluoride switch.
2. A sulphur hexafluoride switch inflation valve as claimed in claim 1, characterised in that the valve body (10) is provided with a shoulder (12), the shoulder (12) being adapted to be supported to a wall of an air chamber of the sulphur hexafluoride switch;
the inflation valve for the sulfur hexafluoride switch further comprises:
the locking nut (30) is connected to the valve main body (10) in a threaded mode and clamps the air chamber wall of the sulfur hexafluoride switch together with the shaft shoulder (12);
and the shaft shoulder sealing piece (15) is used for sealing between the shaft shoulder (12) and the air chamber wall of the sulfur hexafluoride switch.
3. A sulphur hexafluoride switch inflator according to claim 2 wherein the shoulder (12) is disposed at an inner end of the valve body (10).
4. A sulfur hexafluoride switch inflation valve as claimed in claim 3, wherein the opening of the sealing nut (40) is a stepped hole, and includes a threaded hole section (41) and an avoiding hole section (42), the threaded hole section (41) forms the threaded blind hole, and the inside diameter of the avoiding hole section (42) is larger than that of the threaded hole section (41) for avoiding the lock nut (30).
5. A sulfur hexafluoride switch inflator valve as claimed in claim 4 wherein the stepped bore further includes a seal segment (43), the seal segment (43) being located on a side of the relief bore segment (42) remote from the threaded bore segment (41) to form a seal groove for mounting the annular seal (44).
6. A sulfur hexafluoride switch gas filling valve as claimed in claim 4 or 5, characterised in that the sulfur hexafluoride switch gas filling valve further includes a spring washer (31), the spring washer (31) being arranged outside the lock nut (30) for being cushioned between the sealing nut (40) and the lock nut (30).
7. A sulfur hexafluoride switch inflator valve as claimed in any one of claims 2 to 5 wherein the shoulder (12) is provided with an annular groove, the shoulder seal (15) fitting within the annular groove.
8. A sulfur hexafluoride switch gas filling valve as claimed in any one of claims 1 to 5, characterised in that the outermost end of the valve body (10) is provided with a necked down section (17).
9. A sulfur hexafluoride switch gas filling valve as claimed in any one of claims 1 to 5, wherein the end of the sealing nut facing away from the bore is provided with a reduced diameter section (45).
10. The sulfur hexafluoride switch comprises an air box, and an inflation valve is arranged on the wall of the air box;
characterised in that the inflation valve is as claimed in any one of claims 1 to 9 for a sulphur hexafluoride switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120036366.XU CN214542002U (en) | 2021-01-07 | 2021-01-07 | Inflation valve for sulfur hexafluoride switch and sulfur hexafluoride switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120036366.XU CN214542002U (en) | 2021-01-07 | 2021-01-07 | Inflation valve for sulfur hexafluoride switch and sulfur hexafluoride switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214542002U true CN214542002U (en) | 2021-10-29 |
Family
ID=78301348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120036366.XU Active CN214542002U (en) | 2021-01-07 | 2021-01-07 | Inflation valve for sulfur hexafluoride switch and sulfur hexafluoride switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214542002U (en) |
-
2021
- 2021-01-07 CN CN202120036366.XU patent/CN214542002U/en active Active
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