CN214743454U - Gas insulated electrical equipment and valve body assembly thereof - Google Patents
Gas insulated electrical equipment and valve body assembly thereof Download PDFInfo
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- CN214743454U CN214743454U CN202120988173.4U CN202120988173U CN214743454U CN 214743454 U CN214743454 U CN 214743454U CN 202120988173 U CN202120988173 U CN 202120988173U CN 214743454 U CN214743454 U CN 214743454U
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Abstract
The embodiment of the utility model provides a be used for gas insulation electrical equipment and valve body subassembly thereof. The valve body assembly is characterized by comprising: the valve body is provided with a through hole on the outer wall and a gas path blocker inside; the rotary switch comprises a rotary part with a screw rod and a fixed part with a through hole, the rotary part is hermetically connected with the fixed part, the screw rod is in threaded fit with the fixed part, and the fixed part is fixed on the outer wall of the valve body; the first sealing ring is fastened between the fixing part and the outer wall of the valve body; when the rotating part is stressed to rotate, the end part of the screw rod presses or releases the gas path blocker. The utility model provides a valve body subassembly passes through the mode that sets up of fixed part and each through-hole, has avoided the linkage between rotating part and the sealing washer to increased the life of sealing washer, need not often to change the sealing washer, and make the operation of intercommunication or blocking the gas circuit more convenient, saved equipment use cost.
Description
Technical Field
The utility model belongs to the technical field of it is electric, specifically be 35 kilovolts and above high-voltage electrical technology field, relate to a gas insulated electrical equipment and valve body subassembly thereof.
Background
Electrical equipment (such as circuit breakers) is widely applied to the disconnection and protection of circuits in power grids, and provides electric power guarantee for life and production of people. Gas-insulated electrical apparatus, using sulfur hexafluoride (SF)6) And the like as a protective gas auxiliary circuit breaker, gas insulated electrical equipment has better performance compared with air insulation and vacuum insulation, and is commonly used for the breaking and protection of high-voltage circuits of 35 kilovolt and above. The gas insulated electrical equipment has very strict requirements on physical indexes such as density, humidity, temperature and the like of the shielding gas, so that various detection equipment is required to detect the shielding gas in the gas path. The valve body assembly is commonly used for connecting an equipment gas circuit, a gas pressure meter gas circuit and a detection gas circuit of electrical equipment. In order to facilitate the checking and overhauling of the detection equipment, a thimble nut is usually arranged on the valve body assembly and used for blocking the detection gas path when the detection equipment is checked or overhauled. The thimble nut is provided with a sealing ring inside for sealing the air path. When checking or overhauling the detection equipment, the thimble nut needs to be disassembled in order to block the detection gas path. However, the sealing ring inside the ejector pin nut is linked with the nut body when the ejector pin nut is disassembled and assembled, and can deform due to torsion, so that the ageing is fast, the sealing ring needs to be replaced when the ejector pin nut is disassembled and assembled every time, otherwise, air leakage is possible, and the use cost of the equipment is increased.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a gas insulated electrical apparatus and a valve body assembly thereof, which at least partially solve the above technical problems.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
according to the utility model discloses an aspect provides a valve body subassembly for gas insulated electrical equipment, a serial communication port, include: the valve comprises a valve body, wherein the outer wall of the valve body is provided with a through hole for communicating the inside and the outside of the valve body, and a gas path blocker is arranged inside the valve body; a rotary switch disposed outside the valve body; the rotary switch comprises a rotary part with a screw rod and a fixed part with a through hole, the rotary part is hermetically connected with the fixed part, the outer surface of the screw rod is matched with the inner surface of the through hole of the fixed part through threads, and the fixed part is fixed on the outer wall of the valve body; a first seal ring formed in a ring shape having a central through hole, the first seal ring being fastened between the fixing portion and an outer wall of the valve body; the through hole of the fixing part, the central through hole of the first sealing ring and the through hole three of the outer wall of the valve body are aligned, wherein the screw rod penetrates through the through hole of the fixing part, the central through hole of the first sealing ring and the through hole of the outer wall of the valve body, the end part of the screw rod is connected with the gas path blocker, and when the rotating part is stressed and rotated, the screw rod is in threaded fit with the axial upward movement of the screw rod, so that the end part of the screw rod is pressed or released from the gas path blocker.
The embodiment of the utility model provides an among the valve body assembly, because first sealing washer fastening is in the fixed part with between the outer wall of valve body, when the rotating part atress is rotatory, the screw rod moves in its axial to make the tip of screw rod press down or release gas circuit interrupter, consequently, the linkage between rotating part and the sealing washer has been avoided to the fixed part and the mode that sets up of each through-hole, thereby increased the life of sealing washer, need not often to change the sealing washer, and make the intercommunication or block the operation of gas circuit more convenient, saved equipment use cost.
In another implementation manner of the present invention, the valve body assembly further includes: a first sleeve; the fixed part forms into the second sleeve pipe, the first sleeve pipe forms the through-hole of fixed part, the rotating part with first sleeve pipe sealing connection, the internal surface of second sleeve pipe with the external surface screw-thread fit of first sleeve pipe is to establish the second sleeve pipe on the first sleeve pipe, wherein, the first sealing washer is fastened between the second sleeve pipe and the outer wall of valve body through the screw-thread fit between the external surface of first sleeve pipe and the internal surface of second sleeve pipe.
In the implementation mode, the second sleeve fastens the sealing ring through the threaded fit with the first sleeve, and the sealing effect is better.
In another implementation of the present invention, the inner surface of the first sleeve and the outer surface of the first sleeve have opposite thread directions.
In this implementation, after the second sleeve is installed on the first sleeve through the threaded fit, the connection between the first sleeve and the first sleeve is not affected by the operation of the rotating part, and the valve body assembly works more stably.
In another implementation of the present invention, the first sleeve passes through the through hole of the outer wall of the valve body, the first sleeve has a stopper portion located inside the valve body, so that the first seal ring is fastened between the one end of the second sleeve and the outer wall of the valve body, and the stopper portion is pressed against the outer wall of the valve body from the inside.
In this realization, the stop of the first sleeve is pressed from the inside against the outer wall of the valve body, the connection between the first sleeve and the valve body being stronger.
In another implementation of the present invention, the first sleeve is disposed inside the valve body, and the second sealing ring is disposed inside the valve body, such that the first sealing ring is fastened between one end of the second sleeve and the outer wall of the valve body, and the second sealing ring is fastened between the stopper and the outer wall of the valve body.
In the realization mode, the second sealing ring seals between the first sleeve and the outer wall of the valve body, and the sealing effect of the valve body assembly is better.
In another implementation of the present invention, the fixing portion is protruded toward a periphery of one side of the valve body to form an extension portion matching a shape of an outer edge of the first sealing ring, so that the first sealing ring is at least partially accommodated in the extension portion.
In this implementation, the fixing portion reduces exposure of the first seal ring to the external environment, so that aging of the seal ring can be slowed down.
According to a second aspect of the embodiments of the present invention, there is provided a gas insulated electrical apparatus, comprising: an apparatus main body; at least one gas circuit; and the valve body assembly according to the first aspect, wherein the valve body assembly is connected to the apparatus main body via the at least one gas path, and the gas path blocker of the valve body assembly is used for communicating or blocking the at least one gas path.
In the electrical equipment that this application embodiment provided, owing to adopted the first aspect the valve body subassembly, need not often to change the sealing washer of valve body subassembly to the operation that communicates or block the gas circuit is more convenient, thereby has reduced equipment maintenance and use cost.
In another implementation of the present invention, the apparatus main body is a gas-insulated circuit breaker.
In this implementation, the gas-insulated electrical apparatus is capable of closing, carrying and opening not only the current under normal circuit conditions, but also the current under abnormal circuit conditions for a prescribed time.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it should be apparent that the drawings in the following description are only some embodiments described in the embodiments of the present invention, and it is also possible for a person skilled in the art to obtain other drawings based on these drawings.
FIG. 1 is a schematic perspective view of a typical example valve body assembly;
FIG. 2 is a schematic cross-sectional view of the valve body assembly of FIG. 1;
FIG. 3 is a schematic cross-sectional view of the valve body assembly of FIG. 1;
FIG. 4 is a schematic perspective view of a gas path blocker of the valve body assembly of FIG. 1;
FIG. 5 is a schematic block diagram of a thimble nut of the valve body assembly of FIG. 1;
fig. 6 is a schematic cross-sectional view of a valve body assembly provided by an embodiment of the present invention;
fig. 7 is a schematic cross-sectional view of a valve body assembly provided in another embodiment of the present invention;
fig. 8 is a schematic perspective view of a first sleeve according to another embodiment of the present invention;
fig. 9 is a schematic perspective view of a second sleeve according to another embodiment of the present invention;
fig. 10 is a schematic cross-sectional view of a valve body assembly provided in another embodiment of the present invention;
fig. 11 is a schematic cross-sectional view of a valve body assembly according to another embodiment of the present invention.
List of reference numerals:
10: a valve body assembly; 100: a valve body; 111: a first gas path; 112: a second gas path; 113: a third gas path; 120: a thimble nut; 121: a nut body; 122: a thimble; 123: a seal ring; 130: a gas path blocker; 131: a baffle plate; 132: a compression spring; 133: a blocking plug 133;
20: a valve body assembly; 200: a valve body; 210: a rotating part; 220: a fixed part; 230: a first seal ring; 290: a rotary switch;
30: a valve body assembly; 300: a valve body; 310: a rotating part; 330: a first seal ring; 340: a first sleeve; 350: a second sleeve; 390: a rotary switch;
40: a valve body assembly; 400: a valve body; 410: a rotating part; 430: a first seal ring; 440: a first sleeve; 441: a stopper portion; 450: a second sleeve; 460: a second seal ring; 490: a rotary switch;
50: a valve body assembly; 500: a valve body; 510: a rotating part; 520 a fixing part; 521: an extension portion; 530: first seal ring, and 490: a rotary switch.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the embodiments of the present invention, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person having ordinary skill in the art should belong to the scope protected by the embodiments of the present invention.
As shown in fig. 1 to 5, the valve body assembly 10 is used for a gas insulated electrical apparatus, and includes a valve body 100, a first gas path 111, a second gas path 112, a third gas path 113, a spike nut 120, and a gas path interrupter 130; the thimble nut 120 includes a nut body 121, a thimble 122, and a packing 123. The sealing ring 123 is located at the bottom of the inner side of the thimble nut body 121 and used for sealing the gas path; the air path blocker 130 includes a blocking plate 131, a compression spring 132 and a blocking plug 133, the blocking plate 131 is fixed to an outer surface of the valve body 100, one end of the compression spring 132 is connected to the blocking plate 131, and the other end is connected to the blocking plug 133, so that the blocking plug 133 can be pushed toward the spike nut 120.
As shown in fig. 2, when the air passage communication is required, the spike nut 120 is tightened, the spike nut 120 pushes the blocking plug 133, and the third air passage 113 communicates with the first air passage 111.
As shown in fig. 3, when the air passage is required to be blocked, the spike nut 120 is removed, the blocking plug 133 is pushed by the compression spring 132 to move toward the spike nut 120, and the third air passage 113 and the first air passage 111 are blocked.
When the valve body assembly 10 is used for gas-insulated electrical equipment, the first gas path 111 may be connected to an equipment gas path of the electrical equipment, the second gas path 112 may be connected to a barometer gas path, and the third gas path 113 may be connected to a detection gas path. The detection equipment on the detection gas circuit can detect various indexes of the protective gas including but not limited to density, humidity and temperature. When the detection device needs to be overhauled or verified, the gas path blocker 130 can be driven by rotating the thimble nut 120 to block the third gas path 113 and the first gas path 111, so that the normal operation of the electrical device is not affected.
Because the sealing ring 123 is linked with the nut body 121 when the thimble nut 120 is disassembled and assembled, the deformation is caused by torsion, the aging is fast, the sealing ring needs to be replaced when the thimble nut is disassembled and assembled every time, otherwise, the air leakage is possible, and the use cost of the equipment is increased.
As shown in fig. 6, according to a first aspect of the embodiment of the present invention, there is provided a valve body assembly 20 for a gas insulated electrical apparatus, including: the valve body 200 is provided with a through hole for communicating the interior and the exterior of the valve body on the outer wall, and a gas path blocker is arranged in the valve body; a rotary switch 290 provided outside the valve body 200; the rotary switch 290 includes a rotary part 210 having a screw and a stationary part 220 having a through hole, the rotary part 210 and the stationary part 220 are hermetically connected, an outer surface of the screw and an inner surface of the through hole of the stationary part 220 are engaged by a screw, and the stationary part is fixed to an outer wall of the valve body; a first sealing ring 230 formed in a ring shape having a central through hole and fastened between the fixing portion 220 and the outer wall of the valve body 200; the through hole of the fixing portion 220, the central through hole of the first sealing ring 230, and the through hole of the outer wall of the valve body 200 are aligned, wherein the screw rod passes through the through hole of the fixing portion 220, the central through hole of the first sealing ring 230, and the through hole of the outer wall of the valve body 200, the end of the screw rod is connected with the air passage breaker, and when the rotating portion 210 is rotated by force, the screw rod moves in the axial direction thereof due to thread fit, so that the end of the screw rod presses or releases the air passage breaker.
The embodiment of the utility model provides an in the valve body assembly 20, because first sealing washer 230 fastens between the outer wall of fixed part 220 and valve body 200, when the rotating part 210 atress is rotatory, the screw rod moves in its axial, thereby make the tip of screw rod press down or release the gas circuit interrupter, therefore, the fixed part 220 and the mode that sets up of each through-hole, linkage between rotating part 210 and the sealing washer 230 has been avoided, thereby sealing washer 230's life has been increased, need not often to change sealing washer 230, and it is more convenient to make the operation of intercommunication or blocking the gas circuit, and the equipment use cost is saved.
As shown in fig. 7-9, in another implementation of the present invention, the valve body assembly 30 further includes: a first sleeve 340; the fixing part 320 is formed as a second sleeve 350, the first sleeve 340 forms a through hole of the fixing part 320, the rotating part 310 is sealingly connected with the first sleeve 340, an inner surface of the second sleeve 350 is screw-fitted with an outer surface of the first sleeve 340 to sleeve the second sleeve 350 onto the first sleeve 340, wherein the first sealing ring 330 is fastened between the second sleeve 350 and an outer wall of the valve body 300 by screw-fitting between the outer surface of the first sleeve 340 and the inner surface of the second sleeve 350.
In this implementation, the second sleeve 350 fastens the first sealing ring 330 by screw-fitting with the first sleeve 340, and the sealing effect is better.
In another implementation of the present invention, the inner surface and the outer surface of the first sleeve 340 have opposite thread directions.
In this implementation, after the second sleeve 350 is mounted on the first sleeve 340 by screw-fitting, the operation of the rotating part 310 does not affect the connection between the first sleeve 340 and the second sleeve 350, and the valve body assembly 30 operates more stably.
As shown in fig. 10, in another embodiment of the present invention, the first sleeve 440 passes through a through hole of an outer wall of the valve body 400 in the valve body assembly 40, and the first sleeve 440 has a stopper 441 inside the valve body 400 such that the stopper 441 is pressed against the outer wall of the valve body 400 from an inner side in a state where the first seal ring 430 is fastened between one end of the second sleeve 450 and the outer wall of the valve body 400.
In this implementation, the stopper 441 of the first sleeve 440 is pressed against the outer wall of the valve body 400 from the inside, and the connection between the first sleeve 440 and the valve body 400 is stronger.
In another embodiment of the present invention, the first sleeve 440 is partially sleeved with the second sealing ring 460 in the valve body 400, so that the second sealing ring 460 is fastened between the stopper 441 and the outer wall of the valve body 400 in a state where the first sealing ring 430 is fastened between one end of the second sleeve 450 and the outer wall of the valve body 400.
In this implementation, the second sealing ring 460 seals between the first sleeve 440 and the outer wall of the valve body 400, and the valve body assembly is better sealed.
As shown in fig. 11, in another implementation of the present invention, the periphery of the side of the fixing part 520 facing the valve body 500 in the valve body assembly 50 is protruded to form an extension part 521 matching the shape of the outer edge of the first sealing ring 530, so that the first sealing ring 530 is at least partially received in the extension part 521.
In this implementation, the fixing portion 520 reduces exposure of the first sealing ring 530 to the external environment through the extension portion 521, so that the aging of the sealing ring 530 can be reduced.
According to a second aspect of the embodiments of the present invention, there is provided a gas insulated electrical apparatus, comprising: an apparatus main body; at least one gas circuit; and a valve body assembly (20, 30, 40, 50) according to the first aspect, wherein the valve body assembly (20, 30, 40, 50) is connected to the apparatus body via at least one air passage, and the air passage blocker of the valve body assembly (20, 30, 40, 50) is used for communicating or blocking the at least one air passage.
In the electrical equipment that this application embodiment provided, owing to adopted the valve body subassembly (20, 30, 40, 50) of first aspect, need not often to change the sealing washer of valve body subassembly to the operation of intercommunication or blocking the gas circuit is more convenient, thereby has reduced equipment maintenance and use cost.
In another implementation of the present invention, the apparatus main body is a gas-insulated circuit breaker.
In this implementation, the gas-insulated electrical apparatus is capable of closing, carrying and opening not only the current under normal circuit conditions, but also the current under abnormal circuit conditions for a prescribed time.
The above embodiments and implementations are merely specific illustrations of possible embodiments of the present invention, and should not be construed as limitations on the scope of the invention. All the equivalent or modified schemes made by the technical scheme idea of the utility model are included in the protection scope of the utility model, such as the division, recombination and the like of the characteristics.
Claims (8)
1. A valve body assembly for a gas insulated electrical apparatus, the valve body assembly comprising:
the valve comprises a valve body (200), wherein the outer wall of the valve body is provided with a through hole for communicating the inside and the outside of the valve body, and a gas path blocker is arranged inside the valve body;
a rotary switch (290) provided outside the valve body (200);
the rotary switch (290) comprises a rotary part (210) with a screw and a fixed part (220) with a through hole, the rotary part (210) is connected with the fixed part (220) in a sealing way, the outer surface of the screw is matched with the inner surface of the through hole of the fixed part (220) through threads, and the fixed part is fixed on the outer wall of the valve body;
a first seal ring (230) formed in a ring shape having a central through hole, the first seal ring being fastened between the fixing portion (220) and an outer wall of the valve body (200);
wherein the through hole of the fixing part (220), the central through hole of the first sealing ring (230) and the through hole of the outer wall of the valve body (200) are aligned,
the screw rod penetrates through a through hole of the fixing part (220), a central through hole of the first sealing ring (230) and a through hole of the outer wall of the valve body (200), the end part of the screw rod is connected with the gas path blocker, and when the rotating part (210) is stressed to rotate, the screw rod moves in the axial direction of the screw rod due to the thread fit, so that the end part of the screw rod presses or releases the gas path blocker.
2. The valve body assembly of claim 1, further comprising:
a first sleeve (340);
the stationary part (320) is formed as a second sleeve (350), the first sleeve (340) forms a through hole of the stationary part (320), the rotating part (310) and the first sleeve (340) are sealingly connected,
the inner surface of the second sleeve (350) is in threaded fit with the outer surface of the first sleeve (340) to sleeve the second sleeve (350) on the first sleeve (340),
wherein the first seal ring (330) is secured between the second sleeve (350) and the outer wall of the valve body (300) by a threaded fit between the outer surface of the first sleeve (340) and the inner surface of the second sleeve (350).
3. The valve body assembly of claim 2, wherein the inner surface of the first sleeve (340) and the outer surface of the first sleeve (340) have opposite thread directions.
4. A valve body assembly according to claim 2, wherein the first sleeve (440) passes through a through hole of an outer wall of the valve body (400), the first sleeve (440) having a stopper portion (441) at an inside of the valve body such that the stopper portion (441) is pressed against the outer wall of the valve body from an inside in a state where the first seal ring (430) is fastened between one end of the second sleeve (450) and the outer wall of the valve body (400).
5. The valve body assembly according to claim 4, wherein a portion of the first sleeve (440) inside the valve body (400) is sleeved with a second sealing ring (460), such that the second sealing ring (460) is fastened between the stopper (441) and the outer wall of the valve body (400) in a state where the first sealing ring (430) is fastened between one end of the second sleeve (450) and the outer wall of the valve body (400).
6. The valve body assembly according to claim 1, characterized in that the perimeter of the fixing portion (520) facing the side of the valve body (500) is raised to form an extension (521) matching the shape of the outer edge of the first sealing ring (530), so that the first sealing ring (530) is at least partially housed in the extension (521).
7. A gas-insulated electrical apparatus, comprising:
an apparatus main body;
at least one gas circuit; and
the valve body assembly of any one of claims 1-6;
the valve body assembly is connected to the equipment main body through the at least one air path, and the air path blocker of the valve body assembly is used for communicating or blocking the at least one air path.
8. The gas insulated electric apparatus according to claim 7, wherein the apparatus main body is a circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120988173.4U CN214743454U (en) | 2021-05-10 | 2021-05-10 | Gas insulated electrical equipment and valve body assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120988173.4U CN214743454U (en) | 2021-05-10 | 2021-05-10 | Gas insulated electrical equipment and valve body assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214743454U true CN214743454U (en) | 2021-11-16 |
Family
ID=78620401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120988173.4U Active CN214743454U (en) | 2021-05-10 | 2021-05-10 | Gas insulated electrical equipment and valve body assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214743454U (en) |
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2021
- 2021-05-10 CN CN202120988173.4U patent/CN214743454U/en active Active
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Address after: 310018 No. 128, 18th Street (East), Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee after: Siemens Energy High Voltage Switch (Hangzhou) Co.,Ltd. Address before: 310018 No. 128, 18th Street (East), Hangzhou Economic and Technological Development Zone, Zhejiang Province Patentee before: Siemens (Hangzhou) high voltage switch Co.,Ltd. |