Liquid drainage and pressure relief device of mining high-voltage combined vacuum explosion-proof switch cabinet

Abstract

A liquid discharge and pressure relief device of a mining high-pressure combined vacuum explosion-proof switch cabinet comprises a switch cabinet body, an explosion-proof cavity is formed in the switch cabinet body, an intelligent dehumidifier is arranged in the switch cabinet body, and the bottom of the switch cabinet body is connected with the liquid discharge and pressure relief device through a pipeline. The upper portion of the water outlet pipe is connected with a water storage pipe, a water accumulation opening is formed in the upper portion of the water storage pipe, an anti-explosion filter screen is arranged in the middle of the water storage pipe, and the water accumulation opening is communicated with the pipeline. The intelligent dehumidifier and the liquid discharge and pressure relief device are installed in the explosion-proof cavity, when the humidity in the cabinet reaches a certain value, effective dehumidification work can be carried out through the intelligent dehumidifier, meanwhile, generated water flows out of the cabinet through the liquid discharge and pressure relief device, the working reliability of the whole switch cabinet is guaranteed, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid discharge and pressure relief devices, in particular to a liquid discharge and pressure relief device for a high-voltage combined vacuum explosion-proof switch cabinet for mines. Background Art

[0002] Explosion-proof switches, as the name implies, can be used in harsh and dangerous explosion environments. For example, in the coal mining industry, explosion-proof switches are needed. Explosion-proof switches are mainly used in various applications that require a safe, reliable, and easy-to-disconnect connection.

[0003] Especially in the coal mining industry, explosion-proof switchgear normally works underground in a closed and humid working environment. It is inevitable that moisture will appear inside the explosion-proof switch. Rubber sealing is usually used in the prior art to avoid the moisture problem. However, moisture still enters the cavity through doors, flanges, etc., causing the insulating parts to become damp, resulting in creepage, which leads to insulation breakdown, seriously affecting the normal use of the switchgear and personal safety, and greatly reducing the service life and safety factor of the switchgear. Utility Model Content

[0004] In view of the shortcomings of the above-mentioned existing production technology, the applicant provides a drainage and pressure relief device for a high-voltage combined vacuum explosion-proof switchgear for mining with a reasonable structure, so that the liquid in the switchgear can be quickly discharged to the outside of the cabinet, ensuring that the inside of the switchgear is not affected by moisture, thereby ensuring the service life and safety of the entire switchgear.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A drainage and pressure relief device for a high-voltage combined vacuum explosion-proof switch cabinet for mining comprises a switch cabinet body, an explosion-proof cavity is formed inside the switch cabinet body, an intelligent dehumidifier is fixedly installed inside the explosion-proof cavity, the bottom of the intelligent dehumidifier is connected to the drainage and pressure relief device through a pipeline, and the structure of the drainage and pressure relief device is as follows: it comprises an opening arranged at the bottom of the switch cabinet body, a fixed bottom plate is arranged outside the opening, a through hole identical to the opening is opened on the fixed bottom plate, a water outlet pipe is sealed and installed at the opening and the through hole, the cross section of the water outlet pipe is a "T"-shaped structure, the bottom of the water outlet pipe is connected to the water outlet nozzle through a nut, the upper part of the water outlet pipe is connected to a water storage pipe, a water accumulation port is arranged at the upper part of the water storage pipe, an explosion-proof filter is arranged in the middle of the water storage pipe, and the water accumulation port is connected to the pipeline.

[0007] As a further improvement of the above technical solution:

[0008] A portion of the water outlet pipe is inside the explosion-proof cavity, and another portion is outside the explosion-proof cavity.

[0009] A perforation is provided at the center of the water outlet pipe, and the inner wall surface of the perforation forms an explosion-proof surface.

[0010] The top surface of the water storage pipe is provided with an opening which is connected to the pipeline, and the bottom of the water storage pipe is provided with a circular hole, the diameter of which is the same as the diameter of the perforation of the water outlet pipe.

[0011] The center lines of the circular hole at the bottom of the water storage pipe and the perforation of the water outlet pipe are located in the same plane.

[0012] The water outlet nozzle adopts an inverted cone structure.

[0013] The beneficial effects of the utility model are as follows:

[0014] The utility model has a compact and reasonable structure and is easy to operate. By installing an intelligent dehumidifier and a liquid discharge and pressure relief device inside the explosion-proof cavity, when the humidity in the cabinet reaches a certain value, the intelligent dehumidifier can be used to perform effective dehumidification work. At the same time, the generated water flows out of the cabinet through the liquid discharge and pressure relief device, thereby ensuring the working reliability of the entire switch cabinet and extending its service life.

[0015] The device described in the utility model can fully meet the requirements of GB / B3836.2-2021 standard, can flow water out of the cabinet, and can meet national standards. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model.

[0017] Figure 2 It is a structural schematic diagram of the liquid discharge and pressure relief device of the utility model.

[0018] Among them: 1. Switch cabinet body; 2. Explosion-proof cavity; 3. Intelligent dehumidifier; 4. Pipeline; 5. Drainage and pressure relief device; 6. Fixed bottom plate;

[0019] 501, water accumulation outlet; 502, explosion-proof filter; 503, water storage pipe; 504, water outlet pipe; 505, nut; 506, water outlet nozzle; 507, explosion-proof surface. DETAILED DESCRIPTION

[0020] The specific implementation of the utility model is described below in conjunction with the accompanying drawings.

[0021] like Figure 1 and Figure 2As shown, the drainage and pressure relief device of the mining high-voltage combined vacuum explosion-proof switch cabinet of this embodiment includes a switch cabinet body 1, an explosion-proof cavity 2 is formed inside the switch cabinet body 1, an intelligent dehumidifier 3 is fixedly installed inside the explosion-proof cavity 2, and the bottom of the intelligent dehumidifier 3 is connected to the drainage and pressure relief device 5 through a pipeline 4. The structure of the drainage and pressure relief device 5 is as follows: it includes an opening arranged at the bottom of the switch cabinet body 1, a fixed bottom plate 6 is arranged outside the opening, and a through hole identical to the opening is opened on the fixed bottom plate 6, a water outlet pipe 504 is sealed and installed at the opening and the through hole, the cross-section of the water outlet pipe 504 is a "T"-shaped structure, the bottom of the water outlet pipe 504 is connected to the water outlet nozzle 506 through a nut 505, the upper part of the water outlet pipe 504 is connected to the water storage pipe 503, the upper part of the water storage pipe 503 is provided with a water accumulation port 501, the middle part of the water storage pipe 503 is provided with an explosion-proof filter screen 502, and the water accumulation port 501 is connected to the pipeline 4.

[0022] A portion of the water outlet pipe 504 is inside the explosion-proof cavity 2 , and another portion is outside the explosion-proof cavity 2 .

[0023] A hole is formed at the center of the water outlet pipe 504 , and the inner wall of the hole forms an explosion-proof surface 507 .

[0024] The top surface of the water storage pipe 503 is provided with an opening, which is connected to the pipeline 4 , and the bottom of the water storage pipe 503 is provided with a circular hole, the diameter of which is the same as the diameter of the perforation of the water outlet pipe 504 .

[0025] The center lines of the circular hole at the bottom of the water storage pipe 503 and the perforation of the water outlet pipe 504 are located in the same plane.

[0026] The water outlet 506 adopts an inverted cone structure.

[0027] In actual working process:

[0028] The drainage and pressure relief device 5 described in the utility model is installed in the switch cabinet under the mine. When the humidity in the cabinet reaches a certain value, the intelligent dehumidifier 3 works to effectively dehumidify the environment in the cabinet. At the same time, the generated water flows out of the cabinet through the drainage and pressure relief device 5. Specifically: first, the generated water enters the water accumulation port 501 through the pipeline 4, and the water at the water accumulation port 501 is filtered through the explosion-proof filter 502 and then enters the bottom of the water storage pipe 503, and then enters the water outlet pipe 504, and finally is discharged out of the cabinet through the water outlet 506. On the one hand, the water is discharged, and on the other hand, it also plays a role in pressure relief and explosion prevention, thereby ensuring the working reliability of the entire switch cabinet and extending its service life.

[0029] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A liquid discharge and pressure relief device for a high-voltage combined vacuum explosion-proof switch cabinet for mining, comprising a switch cabinet body (1), characterized in that: The switch cabinet body (1) forms an explosion-proof cavity (2) inside, and an intelligent dehumidifier (3) is fixedly installed inside the explosion-proof cavity (2). The bottom of the intelligent dehumidifier (3) is connected to a drainage pressure relief device (5) through a pipeline (4). The structure of the drainage pressure relief device (5) is as follows: it includes an opening arranged at the bottom of the switch cabinet body (1), a fixed bottom plate (6) is arranged outside the opening, and a through hole similar to the opening is opened on the fixed bottom plate (6), and a water outlet pipe (5) is connected to the bottom of the intelligent dehumidifier (3). 04) is sealed and installed at the opening and the through hole. The cross section of the water outlet pipe (504) is a "T"-shaped structure. The bottom of the water outlet pipe (504) is connected to the water outlet nozzle (506) through a nut (505). The upper part of the water outlet pipe (504) is connected to the water storage pipe (503). The upper part of the water storage pipe (503) is provided with a water accumulation port (501). The middle part of the water storage pipe (503) is provided with an explosion-proof filter screen (502). The water accumulation port (501) is connected to the pipeline (4).

2. The liquid discharge and pressure relief device of the high-voltage combined vacuum explosion-proof switch cabinet for mining use according to claim 1 is characterized in that: A portion of the water outlet pipe (504) is inside the explosion-proof cavity (2), and another portion is outside the explosion-proof cavity (2).

3. The liquid discharge and pressure relief device of the high-voltage combined vacuum explosion-proof switch cabinet for mining use according to claim 1 is characterized in that: A perforation is formed at the center of the water outlet pipe (504), and the inner wall of the perforation forms an explosion-proof surface (507).

4. The liquid discharge and pressure relief device of the high-voltage combined vacuum explosion-proof switch cabinet for mining use according to claim 3 is characterized in that: The top surface of the water storage pipe (503) is provided with an opening connected to the pipeline (4); the bottom of the water storage pipe (503) is provided with a circular hole, the diameter of which is the same as the diameter of the hole of the water outlet pipe (504).

5. The liquid discharge and pressure relief device of the high-voltage combined vacuum explosion-proof switch cabinet for mining use according to claim 4 is characterized in that: The center lines of the circular hole at the bottom of the water storage pipe (503) and the perforation of the water outlet pipe (504) are located in the same plane.

6. The liquid discharge and pressure relief device of the high-voltage combined vacuum explosion-proof switch cabinet for mining use according to claim 1 is characterized in that: The water outlet nozzle (506) adopts an inverted cone structure.

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