CN109326986B - Inflating cabinet - Google Patents
Inflating cabinet Download PDFInfo
- Publication number
- CN109326986B CN109326986B CN201811308363.6A CN201811308363A CN109326986B CN 109326986 B CN109326986 B CN 109326986B CN 201811308363 A CN201811308363 A CN 201811308363A CN 109326986 B CN109326986 B CN 109326986B
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- gas
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- air chamber
- inflatable cabinet
- cabinet
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- 238000007789 sealing Methods 0.000 claims abstract description 41
- 230000009471 action Effects 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B13/00—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle
- H02B13/02—Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle with metal casing
- H02B13/035—Gas-insulated switchgear
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Gas-Insulated Switchgears (AREA)
Abstract
The invention relates to an inflatable cabinet. The inflatable cabinet comprises an inflatable cabinet air chamber and a gas storage device, wherein the gas storage device is used for storing and adding insulating gas into the inflatable cabinet air chamber, a one-way inflation valve is arranged between the inflatable cabinet air chamber and the gas storage device and enables the insulating gas to flow to the inflatable cabinet air chamber from the gas storage device, the one-way inflation valve comprises a valve body internally provided with a gas circulation channel, a valve core used for opening or closing the gas circulation channel is movably assembled in the valve body, an elastic piece is further arranged inside the valve body, and the elastic piece is used for applying acting force for enabling the valve core to close the gas circulation channel to the valve. The inflatable cabinet can be used for solving the problem that the normal use of the inflatable cabinet is influenced by the leakage of insulating gas after the sealing grade of the existing inflatable cabinet is reduced.
Description
Technical Field
The invention relates to an inflatable cabinet.
Background
The gas-filled cabinet (namely indoor alternating-current high-voltage gas-insulated metal-enclosed switchgear) has the advantages of compact structure, high reliability, convenience in installation, simplicity in operation, small occupied area and the like, and is more and more favored by users.
The gas-filled cabinet is generally provided with a special gas-filled cabinet air chamber to play an insulating role, the gas-filled cabinet air chamber needs the insulating gas inside to reach a certain functional air pressure range, however, the gas-filled cabinet air chamber is influenced by factors such as manufacturing quality and environmental conditions, the sealing grade of the gas-filled cabinet air chamber is insufficient or is reduced after being used for a period of time, the problem of insulating gas leakage can occur when the gas-filled cabinet air chamber cannot reach the operation period specified by the technical standard, the insulating gas leakage can lead to the reduction of the functional air pressure in the gas-filled cabinet air chamber, the functional air pressure in the gas-filled cabinet air chamber cannot reach the set pressure value, and the normal use of the gas-filled cabinet can be influenced.
Disclosure of Invention
The invention aims to provide an inflatable cabinet, which is used for solving the problem that the normal use of the inflatable cabinet is influenced by the leakage of insulating gas after the sealing grade of the conventional inflatable cabinet is reduced.
In order to achieve the purpose, the inflatable cabinet adopts the following technical scheme: the inflatable cabinet comprises an inflatable cabinet air chamber and a gas storage device, wherein the gas storage device is used for storing and adding insulating gas into the inflatable cabinet air chamber, a one-way inflation valve is arranged between the inflatable cabinet air chamber and the gas storage device and enables the insulating gas to flow to the inflatable cabinet air chamber from the gas storage device, the one-way inflation valve comprises a valve body internally provided with a gas circulation channel, a valve core used for opening or closing the gas circulation channel is movably assembled in the valve body, an elastic piece is further arranged inside the valve body, and the elastic piece is used for applying acting force for enabling the valve core to close the gas circulation channel to the valve.
The invention has the beneficial effects that: when the inflatable cabinet is used, the gas pressure in the gas storage device is equal to the sum of the gas pressure in the gas chamber of the inflatable cabinet, the acting force of the elastic element on the valve core and the friction force of the valve body on the valve core, when the gas chamber of the inflatable cabinet leaks gas, the gas pressure in the gas chamber of the inflatable cabinet is reduced, the gas pressure in the gas storage device is greater than the sum of the gas pressure in the gas chamber of the inflatable cabinet, the acting force of the elastic element on the valve core and the friction force of the valve body on the valve core, the valve core is pushed to the gas chamber of the inflatable cabinet and opens a gas circulation channel, the gas in the gas storage device enters the gas chamber of the inflatable cabinet, the gas pressure in the gas chamber of the inflatable cabinet gradually increases along with the gas in the gas storage device entering the gas chamber of the inflatable cabinet until the sum of the gas pressure in the gas chamber of the inflatable cabinet and the acting force of the elastic element, the valve core is pushed to the gas storage device and finally seals the gas circulation channel, and then the gas pressure in the gas storage device is recovered to be equal to the sum of the gas pressure in the gas chamber of the gas-filled cabinet, the acting force of the elastic part on the valve core and the friction force of the valve body on the valve core. The air pressure of the insulating gas in the air storage device is high, the air pressure of the insulating gas in the air chamber of the inflatable cabinet is relatively low, and the air pressure in the air storage device is reduced very little along with the fact that the insulating gas in the air storage device enters the air chamber of the inflatable cabinet, so that the air pressure in the air chamber of the inflatable cabinet can be well guaranteed to be always kept in a functional air pressure range for normal use by using the inflatable cabinet, and the normal use of the inflatable cabinet is guaranteed.
Furthermore, an air chamber self-sealing valve which can be opened under the action of external force and enables the inside and the outside of the air chamber of the air inflation cabinet to be communicated and is automatically sealed without the action of external force is arranged on the air chamber of the air inflation cabinet, one end of the one-way inflation valve is connected with the air chamber self-sealing valve, the other end of the one-way inflation valve is connected with the air storage device, and an ejector pin for opening the air chamber self-sealing valve is arranged at one end, close to the air chamber.
The beneficial effects of the improvement are as follows: before the one-way inflation valve and the gas storage device are installed, the gas chamber of the inflation cabinet can be sealed through the gas chamber self-sealing valve, so that the occupied space of the inflation cabinet can be reduced, and the inflation cabinet is convenient to transport and store.
Furthermore, the one-way inflation valve is connected with the air chamber of the inflation cabinet and the air storage device through thread matching.
The beneficial effects of the improvement are as follows: the connection mode is simple and easy to realize.
Furthermore, the one-way inflation valve is connected with the air chamber self-sealing valve and the air storage device through thread matching.
The beneficial effects of the improvement are as follows: the connection mode is simple and easy to realize.
Further, the gas storage device is a gas cylinder.
The beneficial effects of the improvement are as follows: provides a simple gas storage device, and reduces the manufacturing cost.
Drawings
FIG. 1 is a schematic structural view of an inflatable cabinet according to an embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of a one-way inflation valve of embodiment 1 of the inflatable cabinet of the present invention;
FIG. 3 is a schematic structural diagram of a gas chamber self-sealing valve in embodiment 1 of the gas-filled cabinet of the invention;
in the drawings: 1-an air chamber of an air charging cabinet, 2-an air chamber self-sealing valve, 3-a one-way air charging valve, 4-an air bottle, 21-a self-sealing valve cylinder, 22-a self-sealing valve sealing piece, 31-a valve body, 32-a valve core, 33-a spring, 34-a spring mounting seat, 35-an air circulation channel, 36-an air through port, 321-a radial hole, 322-an axial hole, 341-a through hole and 342-a thimble.
Detailed Description
The following further describes embodiments of the present invention with reference to the drawings.
As shown in fig. 1, an embodiment 1 of the gas-filled cabinet of the present invention includes a gas-filled cabinet chamber 1 filled with an insulating gas, the gas-filled cabinet chamber 1 mainly plays an insulating role for the gas-filled cabinet, a gas-chamber self-sealing valve 2 is disposed on the gas-filled cabinet chamber 1, the gas-chamber self-sealing valve 2 can be opened when an external force is applied to the gas-filled cabinet chamber 1 and enables the gas-filled cabinet chamber 1 to be communicated with the inside and the outside, the gas-filled cabinet chamber 1 can be automatically sealed when no external force is applied to the gas-chamber self-sealing valve 2, a one-way inflation valve 3 is connected to the gas-chamber self-sealing valve 2, one end of the one-way inflation valve 3, which is far away from the gas-chamber self-sealing valve 2, is connected to a gas bottle 4 for storing the insulating gas, the one-way inflation valve 3 enables the insulating gas to enter the. Certainly, in other embodiments, the number of the air chamber self-sealing valve, the one-way inflation valve and the air bottle is not one, and other numbers are possible, and the three are required to be correspondingly matched; the gas cylinder can be replaced by other gas storage devices such as a gas cylinder, a gas tank and the like, and the requirements are met; the one-way inflation valve can also be connected with the air chamber self-sealing valve and the air bottle in other modes, such as clamping connection, the requirement is met, and the sealing property of the connection part is required to be ensured no matter what connection mode is adopted; in other embodiments, the air chamber self-sealing valve is not required, and the one-way inflation valve is directly connected with the air chamber of the inflation cabinet, so that the requirements are met.
As shown in fig. 2, a P1 end of the one-way charge valve 3 is connected with the gas cylinder 4, a P2 end of the gas chamber self-sealing valve 2, the one-way charge valve 3 includes a valve body 31 and a valve core 32, the valve body 31 is hollow to form a gas flow channel 35, the valve body 31 is internally provided with a gas passage port 36, the valve body 31 is internally provided with a spring mounting seat 34, the spring mounting seat 34 is provided with a through hole 341 for passing insulating gas, the spring mounting seat 34 is provided with a spring 33, the spring 33 forms an elastic member, one end of the valve core 32 is arranged in a conical surface, the side wall of the valve core 32 near the conical surface end is provided with four radial holes 321 uniformly distributed along the circumferential direction of the valve core 32, the valve core 32 is hollow to form an axial hole 322, the axial hole 322 ends at the conical surface end of the valve core 32, i.e. the conical surface end is, the conical end of the valve core 32 faces the gas passing port 36, the spring 33 passes through the axial hole 322 to press the conical end of the valve core 32 and press the valve core 32 to the gas passing port 36, i.e. the conical end of the valve core 32 is matched with the gas passing port 36 to seal the gas flowing channel 35, the size of the gas flowing channel 35 at the position of the radial hole 321 on the valve core 32 (including the position to which the radial hole 321 dynamically moves in the moving process of the valve core 32) is larger than that of the corresponding valve core 32, and the side of the spring mounting seat 34, which faces away from the spring 33, is provided with a columnar structure extending along the axial direction of the valve core 32, and the columnar structure constitutes a thimble 342. Certainly, in other embodiments, the one-way inflation valve may be in other structural forms as long as the function of the one-way inflation valve in the inflation cabinet is satisfied, and the one-way inflation valve is common in the field of valves, so the specific structure is not described again; the radial holes on the valve core are not required to be uniformly distributed along the axial direction of the valve core, so long as the insulating gas can enter the gas chamber of the gas-filled cabinet when the gas passing port is opened; the spring mounting seat can be arranged without being integrated with the valve body, and can be separately arranged and then fixedly mounted in the valve body; the spring can press the conical surface end part of the valve core without penetrating through the axial hole of the valve core, and can be connected with the end part of the valve core opposite to the conical surface end part, so that the requirement is met; the spring can be replaced by other elastic pieces such as an elastic piece, and the elastic piece can press the valve core onto the gas through hole under the condition of no gas pressure and has certain pressure; the conical end of the valve core can be arranged in other forms, such as a plane end which is larger than the gas through hole, as long as the gas through hole can be sealed, and the insulating gas can enter the radial hole in the valve core from the side part of the valve core after the valve core is pushed away; in other embodiments, if the air chamber self-sealing valve is not arranged, and the one-way inflation valve is directly connected with the air chamber of the inflation cabinet, the one-way inflation valve does not need to be provided with a thimble.
As shown in fig. 3, the air chamber self-sealing valve 2 includes a self-sealing valve cylinder 21 and a self-sealing valve plugging member 22, when the above-mentioned one-way inflation valve 3 is installed, the thimble 342 in the one-way inflation valve 3 will push open the self-sealing valve plugging member 22 of the air chamber self-sealing valve 2, so as to communicate the inside and outside of the air chamber 1 of the inflation cabinet, because the air chamber self-sealing valve 2 is common in the valve field, the specific structure is not repeated.
After the inflatable cabinet is assembled, the air pressure in the air bottle 4 can be ensured to be equal to the sum of the air pressure in the air chamber 1 of the inflatable cabinet, the thrust force of the spring 33 acting on the valve core 32 and the friction force of the valve body 31 acting on the valve core 32. When the inflatable cabinet is used, the one-way inflation valve 3 is arranged on the air chamber self-sealing valve 2, meanwhile, the thimble 342 in the one-way inflation valve 3 jacks up the self-sealing valve sealing piece 22 of the air chamber self-sealing valve 2 to enable the air chamber 1 of the inflatable cabinet to be communicated with the one-way inflation valve 3, then the air bottle 4 is arranged at the other end of the one-way inflation valve 3, and at the moment, the air pressure in the air bottle 4 is equal to the sum of the air pressure in the air chamber 1 of the inflatable cabinet, the thrust of the spring 33 on the valve core 32 and the friction of the valve body 31 on the valve core 32; when the air leakage condition of the air chamber 1 of the gas-filled cabinet occurs, the air pressure in the air chamber 1 of the gas-filled cabinet is reduced, the air pressure in the air bottle 4 is greater than the sum of the air pressure in the air chamber 1 of the gas-filled cabinet, the thrust force exerted by the spring 33 on the valve core 32 and the friction force exerted by the valve body 31 on the valve core 32, the valve core 32 is pushed to the air chamber 1 of the gas-filled cabinet and opens the air circulation channel 35, the air in the air chamber 4 enters the air chamber 1 of the gas-filled cabinet, the air pressure in the air chamber 1 of the gas-filled cabinet is gradually increased along with the air in the air chamber 1 of the gas-filled cabinet and the thrust force exerted by the spring 33 on the valve core 32 is greater than the sum of the air pressure in the air bottle 4 and the friction force exerted by the valve body 31 on the valve core 32, the valve core 32 is pushed to the air passage port 36 in the valve body 31 and finally seals the air circulation, The sum of the thrust force applied to the valve element 32 by the spring 33 and the frictional force applied to the valve element 32 by the valve body 31. The air pressure of the insulating gas in the gas cylinder 4 is high, the air pressure of the insulating gas in the gas charging cabinet air chamber 1 is relatively low, the air pressure in the gas cylinder 4 is reduced very little along with the fact that the insulating gas in the gas cylinder 4 enters the gas charging cabinet air chamber, the air pressure in the gas charging cabinet air chamber 1 can be well guaranteed to be maintained in a functional air pressure range of normal use all the time by using the gas charging cabinet, and the normal use of the gas charging cabinet is guaranteed.
Claims (3)
1. An inflatable cabinet is characterized by comprising an inflatable cabinet air chamber and a gas storage device used for storing and charging insulating gas into the inflatable cabinet air chamber, wherein a one-way inflation valve used for enabling the insulating gas to flow from the gas storage device to the inflatable cabinet air chamber is arranged between the inflatable cabinet air chamber and the gas storage device, the one-way inflation valve comprises a valve body internally provided with a gas circulation channel, a valve core used for opening or closing the gas circulation channel is movably assembled in the valve body, an elastic piece is further arranged in the valve body, and the elastic piece is used for applying acting force for enabling the valve core to close the gas circulation channel to the valve core; when the inflatable cabinet is used, the gas pressure in the gas storage device is equal to the sum of the gas pressure in the gas chamber of the inflatable cabinet, the thrust exerted on the valve core by the elastic piece and the friction exerted on the valve core by the valve body; the air chamber of the inflatable cabinet is provided with an air chamber self-sealing valve which can be opened under the action of external force and enables the inside and the outside of the air chamber of the inflatable cabinet to be communicated, and the air chamber self-sealing valve can be automatically closed without the action of external force; the valve body is internally provided with a spring mounting seat, a through hole for passing the insulating gas is formed in the spring mounting seat, and a spring is mounted on the spring mounting seat and forms an elastic part; one side of the spring mounting seat, which is back to the spring, is provided with a columnar structure which extends along the axial direction of the valve core, and the columnar structure forms a thimble; the air chamber self-sealing valve comprises a self-sealing valve barrel and a self-sealing valve plugging piece, and when the one-way inflation valve is installed, the ejector pin can jack the air chamber self-sealing valve plugging piece.
2. An inflatable cabinet as claimed in claim 1 wherein the one-way inflation valve is connected to the chamber self-sealing valve and the gas storage means by a screw-thread fit.
3. An inflatable cabinet as claimed in claim 1 or claim 2 wherein the gas storage means is a gas cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308363.6A CN109326986B (en) | 2018-11-05 | 2018-11-05 | Inflating cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811308363.6A CN109326986B (en) | 2018-11-05 | 2018-11-05 | Inflating cabinet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109326986A CN109326986A (en) | 2019-02-12 |
| CN109326986B true CN109326986B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811308363.6A Active CN109326986B (en) | 2018-11-05 | 2018-11-05 | Inflating cabinet |
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| CN (1) | CN109326986B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111697479A (en) * | 2019-03-11 | 2020-09-22 | 吴长兰 | Ring main unit convenient for gas sampling and inflation |
| CN110518485B (en) * | 2019-09-12 | 2024-11-01 | 宁波耐森电气科技有限公司 | Special-structured inflatable cabinet |
| CN110792918A (en) * | 2019-11-13 | 2020-02-14 | 云南电网有限责任公司电力科学研究院 | Insulating air chamber aerating device |
| CN113277879A (en) * | 2021-05-11 | 2021-08-20 | 陈元元 | Equipment and method for correcting bending deformation of microcrystalline ceramic plate |
| CN114121544B (en) * | 2022-01-27 | 2022-04-01 | 四川电器集团中低压智能配电有限公司 | Environment-friendly gas insulated switchgear |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2113216U (en) * | 1992-01-30 | 1992-08-19 | 长沙铁道学院 | Automatic discharging valve of air press for car |
| CN202217616U (en) * | 2011-08-05 | 2012-05-09 | 平高集团有限公司 | Aerating device used for breaker, and breaker utilizing the same |
| JP2013233059A (en) * | 2012-05-01 | 2013-11-14 | Mitsubishi Electric Corp | Gas-insulated switchgear |
| JP6519938B2 (en) * | 2014-10-16 | 2019-05-29 | 日新電機株式会社 | Vacuum circuit breaker |
| CN205429558U (en) * | 2016-02-22 | 2016-08-03 | 江苏亿能电气有限公司 | SF6 looped netowrk cabinet online intelligent steady voltage system |
| CN105909831A (en) * | 2016-06-08 | 2016-08-31 | 刘光旭 | Hydraulic one-way valve |
| CN107965664B (en) * | 2017-11-22 | 2019-07-30 | 中国西电电气股份有限公司 | A kind of pair of transformer carries out the device and method of automatic inflating device deflation |
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2018
- 2018-11-05 CN CN201811308363.6A patent/CN109326986B/en active Active
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| CN109326986A (en) | 2019-02-12 |
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