Gas chamber structure of gas insulation switch cabinet

Abstract

The utility model discloses a gas chamber structure of a gas insulation switch cabinet, which belongs to the technical field of gas insulation switch cabinets and comprises a cabinet body, a cabinet door is arranged at an opening of the outer side wall of the cabinet body, a gas chamber is mounted on the lower portion of the inner side wall of the cabinet body, an opening is formed in the top of the gas chamber, and an embedded cover is detachably mounted at the opening. A gas leakage detector is installed on the outer side wall of the gas chamber, a gas leakage prevention inflation sealing assembly is installed on the top of the inner side wall of the cabinet body, and a gas inlet of the gas leakage prevention inflation sealing assembly is connected with a gas outlet of a gas pump through a one-way gas inlet valve and a gas pipe. The connection gap between the cover body and the air chamber is presented at the top of the air chamber, and the air leakage detector is matched to trigger the air leakage prevention inflation sealing assembly to inflate the air bag to block the connection gap between the cover body and the air chamber to achieve the air leakage prevention effect when air leakage is detected.

Description

Technical Field

[0001] The utility model relates to the field of gas-insulated switch cabinets, in particular to a gas-insulated switch cabinet air chamber structure. Background Art

[0002] With the rapid development of social economy and technology, and the continuous expansion of engineering construction, power equipment as infrastructure is also developing continuously. High-voltage live conductors will generate arcs at the moment of conduction or disconnection, and the arcs will cause circuit short circuits. Sulfur hexafluoride and nitrogen both have good insulation and arc extinguishing capabilities. Under normal circumstances, switch cabinets use gas-insulated switch cabinets with sulfur hexafluoride, but sulfur hexafluoride is filled in the gas box. When the gas box is aging, sulfur hexafluoride will leak into the air, causing air pollution, and the filling gas cannot be recycled, resulting in a waste of resources.

[0003] To solve the above problems, patent No. CN201921442961.2 discloses an environmentally friendly gas-insulated switchgear air chamber structure. By setting a primary vacuum pump, when the air chamber in the device needs to be opened, the nitrogen in the air chamber can be first transported to the nitrogen storage chamber for storage through the primary vacuum pump. When the device is closed, the nitrogen in the nitrogen storage chamber is transported to the air chamber for utilization, thereby avoiding waste of resources; and by installing a barometer on the cabinet body, the pressure inside the air chamber can be accurately grasped in real time through the barometer, thereby avoiding the decrease of internal nitrogen content due to gas leakage in the air chamber.

[0004] The gas chamber structure of the gas-insulated switchgear disclosed in the above patent will still cause gas leakage when the seal ages after a long period of use, and the gas leakage cannot be discovered and blocked in the first place. Utility Model Content

[0005] The purpose of the utility model is to provide a gas-insulated switch cabinet air chamber structure. The gas-insulated switch cabinet air chamber structure disclosed by the utility model adopts an embedded cover so that the connection gaps between the cover body and the air chamber are presented at the top of the air chamber. In conjunction with a gas leakage detector, when a gas leakage is detected, an anti-leakage inflatable sealing component is triggered to inflate the air bag to block the connection gap between the cover body and the air chamber to achieve an anti-leakage effect, so as to solve the problems raised in the above-mentioned background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gas insulated switch cabinet air chamber structure comprises a cabinet body, a cabinet door is provided at the opening of the outer wall of the cabinet body, an air chamber is installed at the lower part of the inner wall of the cabinet body, the top of the air chamber is open and a built-in cover is detachably installed at the opening, a gas leakage detector is installed on the outer wall of the air chamber, an anti-leakage inflatable sealing assembly is installed on the top of the inner wall of the cabinet body, and the air inlet of the anti-leakage inflatable sealing assembly is connected to the air outlet of an air pump through a one-way air inlet valve and an air pipe.

[0008] As a further solution of the utility model: the anti-leakage air-filled sealing assembly includes an air bag installed on the top of the inner side wall of the cabinet, and an exhaust valve is installed at the exhaust nozzle at the bottom of the air bag.

[0009] As a further solution of the utility model: a rubber sheet is bonded to the bottom of the airbag, and the edge of the rubber sheet extends out of the bottom of the airbag

[0010] As a further solution of the utility model: a plurality of magnetic sheets are installed in a circular equidistant array at the bottom edge of the rubber sheet, and a ring frame is installed on the top of the inner wall of the cabinet and the ring frame is made of a metal material that can be attracted by magnets.

[0011] As a further solution of the utility model: a rigid limit frame is fixedly installed on the upper part of the inner wall of the air chamber, and the top of the rigid limit frame is sealedly connected to a detachable embedded cover embedded in the top opening of the air chamber through a sealing component.

[0012] As a further solution of the utility model: the sealing assembly includes a first rubber sealing frame bonded to the bottom edge of the embedded cover, the bottom of the first rubber sealing frame is in contact with a second rubber sealing frame, and the second rubber sealing frame is bonded to the top of the rigid limiting frame.

[0013] As a further solution of the utility model: an embedded handle is provided in the middle of the top of the embedded cover.

[0014] As a further solution of the utility model: a buzzer and a warning light are installed on the top of the cabinet.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The gas chamber structure of the gas insulated switch cabinet disclosed by the utility model adopts an embedded cover, so that the connection gaps between the cover body and the air chamber are all presented at the top of the air chamber, and cooperates with the gas leakage detector. When gas leakage is detected, the anti-leakage inflatable sealing component is triggered to inflate the air bag to block the connection gap between the cover body and the air chamber to achieve the anti-leakage effect, thereby solving the problem that the gas chamber structure of the gas insulated switch cabinet disclosed in the above patent will still cause gas leakage when the seal is aged after a long period of use, and the gas leakage cannot be discovered and blocked in the first time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic cross-sectional view of a gas chamber structure of a gas insulated switchgear according to an embodiment of the utility model;

[0018] Figure 2 for Figure 1 The structural diagram at A in the middle;

[0019] Figure 3 A schematic structural diagram of a gas chamber structure of a gas-insulated switchgear according to an embodiment of the utility model;

[0020] Figure 4 The present invention is a schematic structural diagram of an air chamber of a gas-insulated switchgear air chamber structure according to an embodiment of the present invention.

[0021] In the figure: 1. cabinet body; 2. ring frame; 3. air bag; 4. air chamber; 5. rubber sheet; 6. magnetic sheet; 7. embedded cover; 8. first rubber sealing frame; 9. second rubber sealing frame; 10. rigid limit frame; 11. embedded handle; 12. cabinet door; 13. buzzer; 14. warning light; 15. air pipe; 16. air pump; 17. one-way air inlet valve; 18. exhaust valve; 19. gas leak detector. DETAILED DESCRIPTION

[0022] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0023] See also Figures 1 to 4 In an embodiment of the utility model, a gas insulated switch cabinet air chamber structure comprises a cabinet body 1, a cabinet door 12 is provided at the opening of the outer wall of the cabinet body 1, an air chamber 4 is installed at the lower part of the inner wall of the cabinet body 1, the top of the air chamber 4 is open and an embedded cover 7 is detachably installed at the opening, a gas leakage detector 19 is installed on the outer wall of the air chamber 4, an anti-leakage inflatable sealing component is installed on the top of the inner wall of the cabinet body 1, and the air inlet of the anti-leakage inflatable sealing component is connected to the air outlet of the air pump 16 through a one-way air inlet valve 17 and an air pipe 15. The air chamber 4 structure of the gas insulated switch cabinet disclosed in the utility model adopts the embedded cover 7, so that the connection gap between the cover body and the air chamber 4 is presented at the top of the air chamber 4, and cooperates with the gas leakage detector 19. When gas leakage is detected, the anti-leakage inflatable sealing component is triggered to inflate the air bag 3 to block the connection gap between the cover body and the air chamber 4 to achieve the anti-leakage effect.

[0024] The air leakage-proof inflatable sealing component includes an airbag 3 installed on the top of the inner wall of the cabinet 1, and an exhaust valve 18 is installed at the exhaust nozzle at the bottom of the airbag 3 to facilitate the exhaust of the gas in the airbag 3; a rubber sheet 5 is bonded to the bottom of the airbag 3, and the edge of the rubber sheet 5 extends out of the bottom of the airbag 3, so the sealing effect is good; a plurality of magnetic sheets 6 are installed in a circular equidistant array at the bottom edge of the rubber sheet 5, and a ring frame 2 is installed on the top of the inner wall of the cabinet 1, and the ring frame 2 is made of a metal material that can be magnetically attracted, so as to facilitate the storage of the airbag 3; a rigid limit frame 10 is fixedly installed on the upper part of the inner wall of the air chamber 4, and the top of the rigid limit frame 10 is sealed and connected to the embedded air chamber 4 through a sealing component. The detachable embedded cover 7 at the top opening makes the connection gap between the cover body and the air chamber 4 appear at the top of the air chamber 4, which is convenient for sealing; wherein, the sealing component includes a first rubber sealing frame 8 bonded at the bottom edge of the embedded cover 7, and the bottom of the first rubber sealing frame 8 is contacted and connected with a second rubber sealing frame 9, and the second rubber sealing frame 9 is bonded to the top of the rigid limit frame 10, and the sealing effect is good; wherein, an embedded handle 11 is provided in the middle of the top of the embedded cover 7 to prevent the airbag 3 from being pushed open due to the protruding handle, so that the airbag 3 filled with air can fit tightly against the top of the air chamber 4; wherein, a buzzer 13 and a warning light 14 are installed on the top of the cabinet 1 to facilitate sound and light alarm.

[0025] The working principle of the utility model is as follows: the structure of the gas chamber 4 of the gas insulated switch cabinet disclosed by the utility model adopts an embedded cover 7, so that the connection gaps between the cover body and the air chamber 4 are all presented at the top of the air chamber 4, and cooperates with the gas leakage detector 19. When a gas leakage is detected, the anti-leakage air-filled sealing component is triggered, and the airbag 3 is inflated to block the connection gap between the cover body and the air chamber 4 to achieve the anti-leakage effect. When the gas leakage detector 19 detects a gas leakage, the external power supply is transmitted to the external control panel, and the external control panel controls the buzzer 13 and the warning light 14 to turn on, and sound and light warnings are given to attract staff to come for maintenance as soon as possible. At the same time, the air pump 16 is controlled to be turned on for a certain period of time, and the air pump 16 passes through the gas. The tube 15 and the one-way air inlet valve 17 inflate the airbag 3, inflate the airbag 3, and make the magnetic suction piece 6 at the bottom edge of the airbag 3 break away from the ring frame 2. The airbag 3 filled with air is fully covered on the top of the air chamber 4 through the rubber sheet 5, blocking the gap at the top of the air chamber 4, and having a good anti-leakage effect. When the air chamber 4 needs to be retracted after inspection, the air in the airbag 3 is emptied through the exhaust valve 18, and the airbag 3 is squeezed upward until the magnetic suction piece 6 at the edge of the rubber sheet 5 at the bottom of the airbag 3 is magnetically attracted to the ring frame 2, and the airbag 3 can be folded and put away for convenient recycling (the buzzer 13, warning light 14, air pump 16, one-way air inlet valve 17, exhaust valve 18 and gas leakage detector 19 are all existing products on the market).

[0026] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gas insulated switch cabinet air chamber structure, comprising a cabinet body (1), a cabinet door (12) is provided at an opening of an outer wall of the cabinet body (1), and an air chamber (4) is installed at a lower portion of an inner wall of the cabinet body (1), characterized in that: The top of the air chamber (4) is open and a built-in cover (7) is detachably installed at the opening; a gas leakage detector (19) is installed on the outer wall of the air chamber (4); an anti-leakage inflatable sealing component is installed on the top of the inner wall of the cabinet (1); the air inlet of the anti-leakage inflatable sealing component is connected to the air outlet of the air pump (16) via a one-way air inlet valve (17) and an air pipe (15).

2. The gas chamber structure of the gas insulated switchgear according to claim 1 is characterized in that: The anti-leakage air-filled sealing assembly comprises an air bag (3) installed on the top of the inner wall of the cabinet (1), and an exhaust valve (18) is installed at the exhaust nozzle at the bottom of the air bag (3).

3. The gas chamber structure of the gas insulated switchgear according to claim 2 is characterized in that: A rubber sheet (5) is bonded to the bottom of the airbag (3), and the edge of the rubber sheet (5) extends out of the bottom of the airbag (3).

4. The gas chamber structure of the gas insulated switchgear according to claim 3 is characterized in that: A plurality of magnetic sheets (6) are installed at the bottom edge of the rubber sheet (5) in a circumferentially equidistant array, and a ring frame (2) is installed at the top of the inner wall of the cabinet (1), and the ring frame (2) is made of a metal material that can be attracted by magnets.

5. The gas chamber structure of the gas insulated switchgear according to claim 1, characterized in that: A rigid limit frame (10) is fixedly mounted on the upper portion of the inner wall of the air chamber (4), and a detachable embedded cover (7) is sealed at the top of the rigid limit frame (10) through a sealing component and is embedded in the top opening of the air chamber (4).

6. The gas chamber structure of the gas insulated switchgear according to claim 5, characterized in that: The sealing assembly comprises a first rubber sealing frame (8) bonded to the bottom edge of the embedded cover (7), the bottom of the first rubber sealing frame (8) is in contact with a second rubber sealing frame (9), and the second rubber sealing frame (9) is bonded to the top of the rigid limiting frame (10).

7. The gas chamber structure of the gas insulated switchgear according to claim 6, characterized in that: An embedded handle (11) is provided in the middle of the top of the embedded cover (7).

8. The gas chamber structure of the gas insulated switchgear according to claim 1, characterized in that: A buzzer (13) and a warning light (14) are installed on the top of the cabinet (1).

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