Gas insulation switch cabinet

Abstract

The utility model discloses a gas insulated switch cabinet, which belongs to the technical field of switch cabinets and comprises a cabinet body, a gas chamber is mounted in the cabinet body, a one-way pressure relief valve casing is mounted at a pressure relief opening in the top of the gas chamber, an exhaust opening is formed in the lower portion of the one-way pressure relief valve casing, and a piston is connected to the lower portion of the inner side wall of the one-way pressure relief valve casing. A pressure sensor is installed at the top of the piston, a stress ring is connected to the top of the pressure sensor in a contact mode, a spring is fixedly connected to the top of the stress ring, and the piston is slidably connected to the inner side wall of the one-way pressure relief valve shell through a limiting guide assembly; according to the gas insulation switch cabinet disclosed by the utility model, the one-way pressure relief assembly capable of automatically relieving pressure is arranged on the gas chamber, so that the pressure can be automatically relieved and an alarm can be given when the air pressure in the gas chamber is too high, and the safety performance is good.

Description

Technical Field

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

[0002] Gas-insulated switchgear is a high-voltage power equipment, mainly used in the field of power transmission and distribution. Its function is to distribute, control and protect high-voltage power. The gas-insulated switchgear adopts gas insulation technology to achieve insulation and isolation of high-voltage equipment. Most of the existing gas-insulated switchgears are not equipped with gas chamber buffering and shock-absorbing structures, which may damage the gas chamber when the switchgear is squeezed or hit, causing gas leakage and loss of performance of the switchgear.

[0003] To solve the above problems, patent number CN202321357483.1 discloses a gas insulated switchgear. Compared with the existing gas insulated switchgear, it is provided with a gas leakage alarm structure, and a gas leakage detector is provided at the upper end of the inner part of the cabinet. When the gas leakage detector detects that the gas inside the gas chamber leaks into the inner part of the cabinet, the alarm light is controlled through the control panel so that the alarm light starts working, and the administrator is notified in time to come and deal with it to avoid large losses. The practical performance of the device is greatly improved through this structural design.

[0004] Although the gas-insulated switchgear disclosed in the above patent can alarm when gas leaks, it does not have a pressure relief component or an alarm component for high pressure. Excessive gas pressure in the gas chamber can easily cause explosion, which is very dangerous. Utility Model Content

[0005] The purpose of the utility model is to provide a gas-insulated switch cabinet. The gas chamber of the gas-insulated switch cabinet disclosed by the utility model is provided with a one-way pressure relief component that can automatically relieve pressure. When the air pressure in the air chamber is too high, the pressure can be automatically relieved and an alarm can be given. The safety performance is good, 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 comprises a cabinet body, an air chamber is installed in the cabinet body, a one-way pressure relief valve shell is installed at the pressure relief port on the top of the air chamber, an exhaust port is opened at the lower part of the one-way pressure relief valve shell, a piston is connected to the lower part of the inner wall of the one-way pressure relief valve shell, a pressure sensor is installed on the top of the piston, a force ring is contacted and connected to the top of the pressure sensor, a spring is fixedly connected to the top of the force ring, the piston is slidably connected to the inner wall of the one-way pressure relief valve shell through a limit guide assembly, and a signal output end of the pressure sensor is connected to a signal input end of an alarm assembly through a control panel.

[0008] As a further solution of the utility model: a gas leakage detector is installed on the top of the inner wall of the cabinet, and the signal output end of the gas leakage detector is connected to the signal input end of the alarm component through the control panel.

[0009] As a further solution of the utility model: the alarm component includes a warning light and a buzzer installed on the outer side wall of the cabinet.

[0010] As a further solution of the utility model: the exhaust port at the lower part of the one-way pressure relief valve shell is connected to an air cylinder through an exhaust pipe.

[0011] As a further solution of the utility model: the exhaust pipe is a hose, and the air receiving cylinder is a retractable sealing rubber cylinder provided with an air release port and is in a retracted state when no air is received.

[0012] As a further solution of the utility model: when the spring is in a normal state, the piston blocks the exhaust port.

[0013] As a further solution of the utility model: the limit guide assembly includes a sliding rod fixedly installed in the middle of the piston top, and the sliding rod is slidably connected to the inner wall of the sliding hole at the top of the one-way pressure relief valve housing.

[0014] As a further solution of the utility model: a top sheet is fixedly connected to the top of the slide rod, and the top sheet plays a limiting role.

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

[0016] The gas chamber of the gas-insulated switch cabinet disclosed by the utility model is provided with a one-way pressure relief component capable of automatically relieving pressure, which can automatically relieve pressure and alarm when the air pressure in the gas chamber is too high, and has good safety performance. It solves the problem that the gas-insulated switch cabinet disclosed in the above patent can alarm when gas leaks, but is not provided with a pressure relief component and an alarm component when the pressure is high, and the air pressure in the gas chamber is too high and easy to explode, which is very dangerous. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of a gas-insulated switchgear according to an embodiment of the utility model;

[0018] Figure 2 A schematic cross-sectional structure diagram of a gas-insulated switchgear according to an embodiment of the utility model;

[0019] Figure 3 for Figure 2 The structural diagram at A in the middle;

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

[0021] In the figure: 1. cabinet; 2. warning light; 3. buzzer; 4. one-way pressure relief valve housing; 5. air chamber; 6. exhaust pipe; 7. air cylinder; 8. exhaust port; 9. piston; 10. slide rod; 11. slide hole; 12. top plate; 13. force ring; 14. pressure sensor; 15. gas leakage detector; 16. spring. 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 comprises a cabinet body 1, an air chamber 5 is installed in the cabinet body 1, a one-way pressure relief valve shell 4 is installed at the pressure relief port on the top of the air chamber 5, an exhaust port 8 is opened at the bottom of the one-way pressure relief valve shell 4, a piston 9 is connected to the lower part of the inner wall of the one-way pressure relief valve shell 4, a pressure sensor 14 is installed on the top of the piston 9, a force ring 13 is contacted and connected to the top of the pressure sensor 14, a spring 16 is fixedly connected to the top of the force ring 13, the piston 9 is slidably connected to the inner wall of the one-way pressure relief valve shell 4 through a limiting guide assembly, a signal output end of the pressure sensor 14 is connected to the signal input end of the alarm assembly through a control panel, and a one-way pressure relief assembly that can automatically relieve pressure is provided on the air chamber 5 of the gas insulated switch cabinet disclosed by the utility model, which can automatically relieve pressure and alarm when the air pressure in the air chamber 5 is too high, and has good safety performance.

[0024] A gas leakage detector 15 is installed on the top of the inner wall of the cabinet 1, and the signal output end of the gas leakage detector 15 is connected to the signal input end of the alarm component through the control panel, which is convenient for alarming when gas leaks; wherein the alarm component includes a warning light 2 and a buzzer 3 installed on the outer wall of the cabinet 1, and the early warning effect is good; wherein the exhaust port 8 provided at the lower part of the one-way pressure relief valve shell 4 is connected to the air receiving cylinder 7 through the exhaust pipe 6, which is convenient for exhaust; wherein the exhaust pipe 6 is a hose, and the air receiving cylinder 7 is a retractable sealing rubber cylinder with an exhaust port and is not When receiving air, it is in a contracted state, and can receive excess air discharged from the air chamber 5 without polluting the atmosphere; wherein, when the spring 16 is in a normal state, the piston 9 blocks the exhaust port 8 to prevent air leakage; wherein, the limiting guide assembly includes a slide rod 10 fixedly installed in the middle of the top of the piston 9, and the slide rod 10 is slidably connected to the inner wall of the slide hole 11 at the top of the one-way pressure relief valve housing 4 to play a guiding role; wherein, a top plate 12 is fixedly connected to the top of the slide rod 10, and the top plate 12 plays a limiting role, and the top plate 12 limits the movement range of the piston 9 to prevent the piston 9 from slipping.

[0025] The working principle of the utility model is as follows: a one-way pressure relief component capable of automatically releasing pressure is arranged on the air chamber 5 of the gas-insulated switch cabinet disclosed by the utility model, which can automatically release pressure and alarm when the air pressure in the air chamber 5 is too high, and has good safety performance. When the air pressure in the air chamber 5 is too high, the piston 9 is pushed upward, and the piston 9 slides upward along the inner wall of the one-way pressure relief valve housing 4, and the slide rod 10 moves along the slide hole 11. At this time, the piston 9 squeezes the spring 16 so that the spring 16 is compressed and shortened, and the force ring 13 at the bottom of the spring 16 synchronously squeezes the pressure sensor 14 so that the pressure sensor 14 detects the pressure value. The pressure sensor 14 cannot detect any pressure value, so the alarm is lifted (the warning light 2, buzzer 3, pressure sensor 14 and gas leakage detector 15 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 switchgear, comprising a cabinet body (1), wherein a gas chamber (5) is installed in the cabinet body (1), characterized in that: A one-way pressure relief valve housing (4) is installed at the pressure relief port at the top of the air chamber (5); an exhaust port (8) is opened at the bottom of the one-way pressure relief valve housing (4); a piston (9) is connected to the lower part of the inner wall of the one-way pressure relief valve housing (4); a pressure sensor (14) is installed on the top of the piston (9); a force ring (13) is contact-connected to the top of the pressure sensor (14); a spring (16) is fixedly connected to the top of the force ring (13); the piston (9) is slidably connected to the inner wall of the one-way pressure relief valve housing (4) via a limit guide assembly; and a signal output end of the pressure sensor (14) is connected to a signal input end of an alarm assembly via a control panel.

2. The gas insulated switchgear according to claim 1, characterized in that: A gas leakage detector (15) is installed on the top of the inner wall of the cabinet (1), and a signal output end of the gas leakage detector (15) is connected to a signal input end of an alarm component via a control panel.

3. The gas insulated switchgear according to claim 2, characterized in that: The alarm component comprises a warning light (2) and a buzzer (3) installed on the outer side wall of the cabinet (1).

4. The gas insulated switchgear according to claim 1, characterized in that: An exhaust port (8) provided at the lower portion of the one-way pressure relief valve housing (4) is connected to an air receiving cylinder (7) via an exhaust pipe (6).

5. The gas insulated switchgear according to claim 4, characterized in that: The exhaust pipe (6) is a hose, and the air receiving cylinder (7) is a retractable sealing rubber cylinder provided with an air release port and is in a retracted state when no air is received.

6. The gas insulated switchgear according to claim 1, characterized in that: When the spring (16) is in a normal state, the piston (9) blocks the exhaust port (8).

7. The gas insulated switchgear according to claim 1, characterized in that: The position limiting guide assembly comprises a slide rod (10) fixedly mounted in the middle of the top of the piston (9), and the slide rod (10) is slidably connected to the inner wall of the slide hole (11) at the top of the one-way pressure relief valve housing (4).

8. The gas insulated switchgear according to claim 7, characterized in that: The top of the slide bar (10) is fixedly connected with a top plate (12), and the top plate (12) plays a limiting role.

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