Protective device for electrical equipment

Abstract

The utility model discloses a protection device for electrical equipment, which comprises an electric control cabinet body, a sealing cabinet door is arranged on the electric control cabinet body, an electric control cabinet top cover is fixedly arranged at the upper end of the electric control cabinet body, a cooling mechanism is arranged in the electric control cabinet body and below the electric control cabinet top cover, and the cooling mechanism comprises a mechanism shell fixed in the electric control cabinet body. A compressed gas cylinder is fixedly installed in the mechanism shell, liquid nitrogen is stored in the compressed gas cylinder, a conveying pipeline is connected to the compressed gas cylinder, a valve is arranged on the conveying pipeline, a spray head is arranged in the middle of the bottom of the mechanism shell, and a trigger assembly is arranged in the middle of the interior of the mechanism shell. According to the protection device for the electrical equipment, the driving rack moves forward to drive the driving gear to rotate in a fire disaster, so that the valve is opened, and liquid nitrogen is sprayed into the electric control cabinet body after the valve is opened, so that the electric control cabinet body is rapidly cooled, more components are prevented from being burnt down, and user loss is reduced.

Description

Technical Field

[0001] The utility model relates to the field of protection devices, in particular to a protection device for electrical equipment. Background Art

[0002] The electric control cabinet is a closed or semi-closed metal cabinet that assembles switchgear, measuring instruments, protective electrical appliances and auxiliary equipment according to the requirements of electrical wiring. Its layout should meet the requirements of normal operation of the power system, facilitate maintenance, and not endanger the safety of people and surrounding equipment. During use, some components in the cabinet may catch fire due to faults. After some components in the cabinet catch fire, they will burn other components in the cabinet, causing more components to be damaged, causing property losses to users. Therefore, a protective device for electrical equipment is proposed. Utility Model Content

[0003] The main purpose of the utility model is to provide a protective device for electrical equipment, which can effectively solve the problems mentioned in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A protective device for electrical equipment, comprising an electric control cabinet body, a sealed cabinet door is provided on the electric control cabinet body, a top cover of the electric control cabinet is fixedly installed on the upper end of the electric control cabinet body, a cooling mechanism is provided in the electric control cabinet body below the top cover of the electric control cabinet, the cooling mechanism comprises a mechanism shell fixed in the electric control cabinet body, a compressed gas cylinder is fixedly installed in the mechanism shell, and liquid nitrogen is stored in the compressed gas cylinder, a delivery pipeline is connected to the compressed gas cylinder, a valve is provided on the delivery pipeline, a nozzle is provided at the middle position of the bottom of the mechanism shell, a trigger assembly is provided at the middle position inside the mechanism shell, the trigger assembly comprises a positioning plate frame fixedly installed in the mechanism shell, a mounting groove is provided on the positioning plate frame, a drive rack and a drive gear are movably installed in the mounting groove, and the drive rack and the drive gear are meshed together, a storage spring is provided in the mounting groove on the positioning plate frame, a blocking frame is provided at one end of the drive rack, and a plastic blocking piece is provided below the blocking frame.

[0006] Furthermore, a mounting hole is provided in the middle of the bottom of the mechanism housing, and the delivery pipeline passes through the mechanism housing through the mounting hole.

[0007] Furthermore, one end of the delivery pipeline is connected to the compressed gas cylinder, and the other end of the delivery pipeline is connected to the nozzle.

[0008] Furthermore, a docking groove is provided at the bottom of the driving gear, and the driving gear is connected to the valve stem of the valve through the docking groove, and the driving rack and the driving gear are movably mounted on the positioning plate frame through the mounting groove.

[0009] Furthermore, one end of the force storage spring is connected to the driving rack, and the other end of the force storage spring is connected to the end of the mounting slot.

[0010] Furthermore, bolts are provided on the side walls of the mechanism housing, and the mechanism housing is fixed in the electric control cabinet body by the bolts.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] After the components catch fire, the temperature inside the electric control cabinet will rise, and the high temperature will melt the plastic baffle. After the plastic baffle melts, the blocking frame will lose its blocking, causing it to fall under the action of gravity. After the blocking frame falls, the driving rack will lose its blocking. After the driving rack loses its blocking, the storage spring will pull the driving rack forward. During the forward movement of the driving rack, it will drive the driving gear to rotate, thereby opening the valve. After the valve is opened, liquid nitrogen will be sprayed into the electric control cabinet body, thereby quickly cooling the electric control cabinet body, preventing more components from being burned, and reducing user losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a partial structural schematic diagram of the utility model;

[0015] Figure 3 This is a schematic diagram of the cooling mechanism of the utility model;

[0016] Figure 4 It is a schematic diagram of the trigger component of the utility model.

[0017] In the figure: 1. top cover of electric control cabinet; 2. main body of electric control cabinet; 3. sealed cabinet door; 4. cooling mechanism; 401. mechanism housing; 402. compressed gas cylinder; 403. delivery pipeline; 404. valve; 405. nozzle; 406. mounting hole; 5. trigger assembly; 501. positioning plate frame; 502. driving rack; 503. driving gear; 504. storage spring; 505. mounting slot; 506. plastic baffle; 507. blocking frame. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] like Figure 1 Figure 2As shown, a protective device for electrical equipment includes an electric control cabinet body 2, a sealed cabinet door 3 is provided on the electric control cabinet body 2, an electric control cabinet top cover 1 is fixedly installed on the upper end of the electric control cabinet body 2, a cooling mechanism 4 is provided in the electric control cabinet body 2 below the electric control cabinet top cover 1, a trigger assembly 5 is provided in the middle position inside the mechanism shell 401, and each group of components can be installed in the electric control cabinet body 2 for use. During use, the trigger assembly 5 can control the switch of the valve 404. Once a fire occurs, the cooling mechanism 4 can quickly cool the components in the electric control cabinet body 2 to prevent more components from being burned and reduce user losses.

[0020] like Figure 3 As shown, the cooling mechanism 4 includes a mechanism shell 401 fixed in the electric control cabinet body 2, a compressed gas cylinder 402 is fixedly installed in the mechanism shell 401, and liquid nitrogen is stored in the compressed gas cylinder 402, a delivery pipeline 403 is connected to the compressed gas cylinder 402, a valve 404 is provided on the delivery pipeline 403, a nozzle 405 is provided at the middle position of the bottom of the mechanism shell 401, a mounting hole 406 is opened at the middle position of the bottom of the mechanism shell 401, the delivery pipeline 403 passes through the mechanism shell 401 through the mounting hole 406, one end of the delivery pipeline 403 is connected to the compressed gas cylinder 402, and the other end of the delivery pipeline 403 is connected to the nozzle 405.

[0021] Specifically, the valve 404 can be controlled to open or close by the trigger component 5. After the valve 404 is opened, the liquid nitrogen in the compressed gas cylinder 402 will be sprayed into the electric control cabinet body 2 through the nozzle 405. The liquid nitrogen sprayed into the electric control cabinet body 2 will quickly vaporize, quickly reduce the temperature inside the electric control cabinet body 2, and prevent more components in the electric control cabinet body 2 from being burned.

[0022] like Figure 4 As shown, the trigger assembly 5 includes a positioning plate frame 501 fixedly installed in the mechanism housing 401, and a mounting groove 505 is provided on the positioning plate frame 501. A driving rack 502 and a driving gear 503 are movably installed in the mounting groove 505, and the driving rack 502 and the driving gear 503 are meshed together. A storage spring 504 is provided in the mounting groove 505 on the positioning plate frame 501, a blocking frame 507 is provided at one end of the driving rack 502, and a plastic blocking piece 506 is provided below the blocking frame 507. A docking groove is provided at the bottom of the driving gear 503, and the driving gear 503 is connected to the valve stem of the valve 404 through the docking groove. The driving rack 502 and the driving gear 503 are both movably installed on the positioning plate frame 501 through the mounting groove 505, one end of the storage spring 504 is connected to the driving rack 502, and the other end of the storage spring 504 is connected to the end of the mounting groove 505.

[0023] Specifically, under normal circumstances, the blocking frame 507 will block the front of the driving rack 502. Once a fire occurs, the plastic blocking piece 506 will be melted by high temperature. After the plastic blocking piece 506 melts, the blocking frame 507 will lose its blocking function, causing it to fall under the action of gravity. After the blocking frame 507 falls, the driving rack 502 will lose its blocking function. After the driving rack 502 loses its blocking function, the force storage spring 504 will pull the driving rack 502 forward. During the forward movement of the driving rack 502, it will drive the driving gear 503 to rotate. After the driving gear 503 rotates, it will drive the valve stem on the valve 404 to rotate, thereby controlling the valve 404 to open when a fire occurs.

[0024] It should be noted that the utility model is a protective device for electrical equipment. In actual use, the cooling mechanism 4 and the trigger assembly 5 are first installed on the top of the electric control cabinet body 2. After the components catch fire, the temperature inside the electric control cabinet body 2 will increase, and the high temperature will melt the plastic baffle 506. After the plastic baffle 506 melts, the blocking frame 507 will fall under the action of gravity, causing the drive rack 502 to lose its blocking. After the drive rack 502 loses its blocking, the storage spring 504 will pull the drive rack 502 forward. During the forward movement of the drive rack 502, it will drive the drive gear 503 to rotate. After the drive gear 503 rotates, it will drive the valve stem on the valve 404 to rotate, thereby opening the valve 404. After the valve 404 is opened, the liquid nitrogen in the compressed gas cylinder 402 will be sprayed into the electric control cabinet body 2 through the nozzle 405. The liquid nitrogen sprayed into the electric control cabinet body 2 will quickly gasify, quickly reduce the temperature inside the electric control cabinet body 2, prevent more components from being burned, and reduce user losses.

[0025] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A protective device for electrical equipment, comprising an electric control cabinet body (2), characterized in that: The electric control cabinet body (2) is provided with a sealed cabinet door (3), the upper end of the electric control cabinet body (2) is fixedly provided with an electric control cabinet top cover (1), the electric control cabinet body (2) is provided with a cooling mechanism (4) below the electric control cabinet top cover (1), the cooling mechanism (4) comprises a mechanism housing (401) fixed in the electric control cabinet body (2), a compressed gas cylinder (402) is fixedly provided in the mechanism housing (401), and liquid nitrogen is stored in the compressed gas cylinder (402), a delivery pipeline (403) is connected to the compressed gas cylinder (402), a valve (404) is provided on the delivery pipeline (403), and a nozzle (405) is provided at the middle position of the bottom of the mechanism housing (401), A trigger assembly (5) is provided at the middle position inside the mechanism housing (401), and the trigger assembly (5) comprises a positioning plate frame (501) fixedly installed in the mechanism housing (401), a mounting groove (505) is provided on the positioning plate frame (501), a driving rack (502) and a driving gear (503) are movably installed in the mounting groove (505), and the driving rack (502) and the driving gear (503) are meshed together, a force storage spring (504) is provided in the mounting groove (505) on the positioning plate frame (501), a blocking frame (507) is provided at one end of the driving rack (502), and a plastic blocking sheet (506) is provided below the blocking frame (507).

2. A protective device for electrical equipment according to claim 1, characterized in that: A mounting hole (406) is provided in the middle of the bottom of the mechanism housing (401), and the delivery pipeline (403) passes through the mechanism housing (401) through the mounting hole (406).

3. A protective device for electrical equipment according to claim 2, characterized in that: One end of the delivery pipeline (403) is connected to the compressed gas cylinder (402), and the other end of the delivery pipeline (403) is connected to the nozzle (405).

4. A protective device for electrical equipment according to claim 3, characterized in that: A docking groove is provided at the bottom of the driving gear (503), and the driving gear (503) is connected to the valve stem of the valve (404) through the docking groove. The driving rack (502) and the driving gear (503) are both movably mounted on the positioning plate frame (501) through the mounting groove (505).

5. A protective device for electrical equipment according to claim 4, characterized in that: One end of the force storage spring (504) is connected to the driving rack (502), and the other end of the force storage spring (504) is connected to the end of the mounting groove (505).

6. A protective device for electrical equipment according to claim 5, characterized in that: Bolts are provided on the side wall of the mechanism housing (401), and the mechanism housing (401) is fixed in the electric control cabinet body (2) by means of the bolts.

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