Safety pressure relief device of low-voltage switch cabinet

Abstract

The utility model relates to the technical field of pressure relief of low-voltage switch cabinets, in particular to a safety pressure relief device of a low-voltage switch cabinet, which is convenient for quickly fixing a pressure relief plate and secondarily using the pressure relief plate, reduces the cost, prevents the pressure relief plate from falling off during pressure relief to cause personal injury, and improves the safety and the practicability. Comprising a low-voltage switch cabinet body. The low-voltage switch cabinet further comprises a pressure relief mechanism, a fixing mechanism and a connection protection mechanism, the fixing mechanism is installed on the pressure relief mechanism, the connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body, the low-voltage switch cabinet body is sealed through the pressure relief mechanism, and the fixing mechanism facilitates rapid fixing of the pressure relief mechanism and assists the pressure relief mechanism in pressure relief. And the connection protection mechanism connects the pressure relief mechanism to the low-voltage switch cabinet main body.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure relief of low-voltage switch cabinets, in particular to a safety pressure relief device for low-voltage switch cabinets. Background Art

[0002] Low-voltage switchgear refers to one or more low-voltage switchgear and related control, measurement, signal, protection, regulation and other equipment. The manufacturer is responsible for completing all internal electrical and mechanical connections and assembling them completely with structural components. Most people subconsciously believe that low-voltage switchgear has low voltage and relatively less danger. Even if a phase-to-phase or phase-to-ground short circuit occurs, it is not as serious as a medium- and high-voltage switchgear. However, most low-voltage switchgears are high-current products, and the short-circuit current can reach more than 100,000 amperes. The instantaneous generation of high-temperature and high-pressure gas has great structural destructiveness and gas pressure. If the high-temperature and high-pressure gas cannot be effectively released in a very short time in the narrow cabinet, it will cause the switchgear to explode, resulting in damage to adjacent switchgears and endangering personal life. Especially in some relatively severe environments, the destructiveness is even greater.

[0003] In the existing low-voltage switchgear pressure relief technology, for example, the prior art with application number CN202022209794.6, includes a pressure relief port, a pressure relief plate, a rear sealing plate, a connecting hinge, a front top cover plate and fastening plastic screws. Under normal circumstances, it does not affect the protective performance of the switchgear and is easy to install. The pressure relief plate is made of thin steel plate, which is easy to deform when a short circuit fault occurs, and the fastening plastic screws are easy to break due to impact.

[0004] However, the prior art is not convenient for resetting the pressure relief plate after pressure relief, and is not convenient for secondary use, which reduces its practicality. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a low-voltage switch cabinet safety pressure relief device which is convenient for quick fixation and secondary use of the pressure relief plate, reduces costs, prevents the pressure relief plate from falling off during pressure relief and causing personal injury, and improves safety and practicality.

[0006] The utility model discloses a safety pressure relief device for a low-voltage switch cabinet, comprising a low-voltage switch cabinet main body; further comprising a pressure relief mechanism, a fixing mechanism and a connection protection mechanism, wherein the fixing mechanism is mounted on the pressure relief mechanism, and the connection protection mechanism is mounted on the outer wall of the low-voltage switch cabinet main body; the low-voltage switch cabinet main body is sealed by the pressure relief mechanism, the fixing mechanism is convenient for quickly fixing the pressure relief mechanism and assisting the pressure relief mechanism in pressure relief, and the connection protection mechanism connects the pressure relief mechanism to the low-voltage switch cabinet main body; the low-voltage switch cabinet main body is sealed by the pressure relief mechanism, the fixing mechanism is convenient for quickly fixing the pressure relief mechanism and assisting the pressure relief mechanism in pressure relief, and is convenient for quickly fixing the pressure relief mechanism after the pressure relief is completed, and reuse it, thereby reducing costs; the connection protection mechanism connects the pressure relief mechanism to the low-voltage switch cabinet main body, thereby preventing the pressure relief mechanism from falling off during pressure relief to cause personal injury, thereby improving safety.

[0007] Preferably, the pressure relief mechanism includes a pressure relief frame and a pressure relief plate, the pressure relief frame is installed on the side wall of the low-voltage switch cabinet body, and the pressure relief plate is rotatably installed on the pressure relief frame; when the low-voltage switch cabinet body needs to be pressure-relieved, the pressure inside the low-voltage switch cabinet body increases, and the pressure relief plate is rotated open on the pressure relief frame to relieve the pressure on the low-voltage switch cabinet body.

[0008] Preferably, the fixing mechanism comprises a fixing rod, a U-shaped elastic frame, two first auxiliary rollers and a second auxiliary roller, the fixing rod is installed on the pressure relief plate through a mounting frame, the U-shaped elastic frame is installed on the outer wall of the low-voltage switch cabinet body, the U-shaped elastic frame is provided with an opening, the U-shaped elastic frame is elastic, the two first auxiliary rollers are rotatably installed at the opening of the U-shaped elastic frame, the second auxiliary roller is rotatably installed inside the U-shaped elastic frame, and the second auxiliary roller is aligned with the opening of the U-shaped elastic frame; when the pressure relief plate is to be fixed, the fixing rod is brought into contact with the first auxiliary roller, And the fixing rod squeezes the first auxiliary roller. Due to the elastic deformation of the U-shaped elastic frame and the rotation of the first auxiliary roller, the fixing rod enters the U-shaped elastic frame, and is fixed by the second auxiliary roller and the first auxiliary roller. When the low-voltage switch cabinet body needs to be depressurized, the pressure in the low-voltage switch cabinet body increases, and the pressure causes the pressure relief plate to rotate. Under the elastic deformation of the U-shaped elastic frame and the rotation of the first auxiliary roller, the fixing rod is pulled out of the U-shaped elastic frame, thereby driving the pressure relief plate to rotate and open on the pressure relief frame to relieve the pressure on the low-voltage switch cabinet body.

[0009] Preferably, a connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body; the above arrangement prevents the pressure relief plate from falling off during pressure relief, causing personal injury, thereby improving safety.

[0010] Preferably, the connection protection mechanism can be a first connection protection mechanism, which includes a first mounting seat and a chain, the first mounting seat is installed on the outer wall of the low-voltage switch cabinet body, one end of the chain is installed on the first mounting seat, and the other end of the chain is installed on the pressure relief plate; when the pressure relief plate is quickly opened, the pressure relief plate is pulled by the chain to prevent the pressure relief plate from falling off and causing personal injury, thereby improving safety.

[0011] Preferably, the connection protection mechanism can also be a second connection protection mechanism, which includes a slide, a slider, a second mounting seat, a third mounting seat and a connecting rod. The slide is installed on the outer wall of the low-voltage switch cabinet body, the slider is slidably installed in the slide, the second mounting seat is installed on the slider, the third mounting seat is installed on the pressure relief plate, one end of the connecting rod is rotatably installed on the third mounting seat, and the other end of the connecting rod is rotatably installed on the second mounting seat; when the pressure relief plate is quickly opened, the slider is pushed by the connecting rod to slide in the slide, the pressure relief plate is assisted to open, and the pressure relief plate is pulled by the second mounting seat, the third mounting seat and the connecting rod to prevent the pressure relief plate from falling off and causing personal injury, thereby improving safety.

[0012] Compared with the prior art, the utility model has the following beneficial effects: the main body of the low-voltage switch cabinet is sealed by the pressure relief mechanism; the fixing mechanism is convenient for quickly fixing the pressure relief mechanism and assisting the pressure relief mechanism in pressure relief; and it is convenient to quickly fix the pressure relief mechanism after the pressure relief is completed and reuse it, thereby reducing costs; the connection protection mechanism connects the pressure relief mechanism to the main body of the low-voltage switch cabinet to prevent the pressure relief mechanism from falling off during pressure relief and causing personal injury, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a first isometric structural schematic diagram of the first embodiment of the utility model;

[0014] Figure 2 It is a first axonometric structural schematic diagram of the second embodiment of the utility model;

[0015] Figure 3 It is a second isometric structural schematic diagram of the first embodiment of the utility model;

[0016] Figure 4 This is a second isometric structural diagram of the second embodiment of the utility model;

[0017] Figure 5 It is a front cross-sectional axonometric structural schematic diagram of the first embodiment of the utility model;

[0018] Figure 6 The utility model Figure 5 A schematic diagram of the enlarged structure at A in the middle;

[0019] Markings in the attached drawings: 01, pressure relief mechanism; 11, low-voltage switch cabinet body; 12, pressure relief frame; 13, pressure relief plate; 02, fixing mechanism; 21, fixing rod; 22, U-shaped elastic frame; 23, first auxiliary roller; 24, second auxiliary roller; 03, first connection protection mechanism; 31, first mounting seat; 32, chain; 04, second connection protection mechanism; 41, slideway; 42, slider; 43, second mounting seat; 44, third mounting seat; 45, connecting rod. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0021] Example 1

[0022] like Figure 1 , Figure 3 , Figure 5 and Figure 6 As shown, a low-voltage switch cabinet safety pressure relief device includes a low-voltage switch cabinet body 11, a pressure relief mechanism 01, a fixing mechanism 02 and a connection protection mechanism, wherein the fixing mechanism 02 is installed on the pressure relief mechanism 01, and the connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body 11;

[0023] The low-voltage switch cabinet body 11 is sealed by the pressure relief mechanism 01, the fixing mechanism 02 facilitates the quick fixing of the pressure relief mechanism 01 and assists the pressure relief mechanism 01 in pressure relief, and the connection protection mechanism connects the pressure relief mechanism 01 to the low-voltage switch cabinet body 11;

[0024] The pressure relief mechanism 01 includes a pressure relief frame 12 and a pressure relief plate 13. The pressure relief frame 12 is mounted on the side wall of the low-voltage switch cabinet body 11, and the pressure relief plate 13 is rotatably mounted on the pressure relief frame 12.

[0025] The fixing mechanism 02 includes a fixing rod 21, a U-shaped elastic frame 22, two first auxiliary rollers 23 and a second auxiliary roller 24. The fixing rod 21 is installed on the pressure relief plate 13 through a mounting frame. The U-shaped elastic frame 22 is installed on the outer wall of the low-voltage switch cabinet body 11. An opening is provided on the U-shaped elastic frame 22. The U-shaped elastic frame 22 is elastic. The two first auxiliary rollers 23 are rotatably installed at the opening of the U-shaped elastic frame 22. The second auxiliary roller 24 is rotatably installed inside the U-shaped elastic frame 22, and the second auxiliary roller 24 is aligned with the opening of the U-shaped elastic frame 22.

[0026] The connection protection mechanism may be a first connection protection mechanism 03, which includes a first mounting seat 31 and a chain 32, wherein the first mounting seat 31 is mounted on the outer wall of the low-voltage switch cabinet body 11, one end of the chain 32 is mounted on the first mounting seat 31, and the other end of the chain 32 is mounted on the pressure relief plate 13;

[0027] When the pressure relief plate 13 is to be fixed, the fixing rod 21 is brought into contact with the first auxiliary roller 23, and the fixing rod 21 squeezes the first auxiliary roller 23. Due to the elastic deformation of the U-shaped elastic frame 22 and the rotation of the first auxiliary roller 23, the fixing rod 21 enters the U-shaped elastic frame 22, and the fixing rod 21 is fixed by the second auxiliary roller 24 and the first auxiliary roller 23. When the low-voltage switch cabinet body 11 is to be depressurized, the pressure in the low-voltage switch cabinet body 11 increases, and the pressure causes the pressure relief plate 13 to rotate. Under the elastic deformation of the U-shaped elastic frame 22 and the rotation of the first auxiliary roller 23, the fixing rod 21 is pulled out of the U-shaped elastic frame 22, thereby driving the pressure relief plate 13 to rotate and open on the pressure relief frame 12 to relieve the pressure on the low-voltage switch cabinet body 11. When the pressure relief plate 13 is quickly opened when the pressure is relieved, the pressure relief plate 13 is pulled by the chain 32 to prevent the pressure relief plate 13 from falling off and causing personal injury, thereby improving safety.

[0028] Example 2

[0029] like Figure 2 , Figure 4 and Figure 6 As shown, a low-voltage switch cabinet safety pressure relief device includes a low-voltage switch cabinet body 11, a pressure relief mechanism 01, a fixing mechanism 02 and a connection protection mechanism, wherein the fixing mechanism 02 is installed on the pressure relief mechanism 01, and the connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body 11;

[0030] The low-voltage switch cabinet body 11 is sealed by the pressure relief mechanism 01, the fixing mechanism 02 facilitates the quick fixing of the pressure relief mechanism 01 and assists the pressure relief mechanism 01 in pressure relief, and the connection protection mechanism connects the pressure relief mechanism 01 to the low-voltage switch cabinet body 11;

[0031] The pressure relief mechanism 01 includes a pressure relief frame 12 and a pressure relief plate 13. The pressure relief frame 12 is mounted on the side wall of the low-voltage switch cabinet body 11, and the pressure relief plate 13 is rotatably mounted on the pressure relief frame 12.

[0032] The fixing mechanism 02 includes a fixing rod 21, a U-shaped elastic frame 22, two first auxiliary rollers 23 and a second auxiliary roller 24. The fixing rod 21 is installed on the pressure relief plate 13 through a mounting frame. The U-shaped elastic frame 22 is installed on the outer wall of the low-voltage switch cabinet body 11. An opening is provided on the U-shaped elastic frame 22. The U-shaped elastic frame 22 is elastic. The two first auxiliary rollers 23 are rotatably installed at the opening of the U-shaped elastic frame 22. The second auxiliary roller 24 is rotatably installed inside the U-shaped elastic frame 22, and the second auxiliary roller 24 is aligned with the opening of the U-shaped elastic frame 22.

[0033] The connection protection mechanism can also be a second connection protection mechanism 04, which includes a slide 41, a slider 42, a second mounting seat 43, a third mounting seat 44 and a connecting rod 45. The slide 41 is installed on the outer wall of the low-voltage switch cabinet body 11, the slider 42 is slidably installed in the slide 41, the second mounting seat 43 is installed on the slider 42, the third mounting seat 44 is installed on the pressure relief plate 13, one end of the connecting rod 45 is rotatably installed on the third mounting seat 44, and the other end of the connecting rod 45 is rotatably installed on the second mounting seat 43;

[0034] When the pressure relief plate 13 is to be fixed, the fixing rod 21 is brought into contact with the first auxiliary roller 23, and the fixing rod 21 squeezes the first auxiliary roller 23. Due to the elastic deformation of the U-shaped elastic frame 22 and the rotation of the first auxiliary roller 23, the fixing rod 21 enters the U-shaped elastic frame 22, and the fixing rod 21 is fixed by the second auxiliary roller 24 and the first auxiliary roller 23. When the low-voltage switch cabinet body 11 is to be depressurized, the pressure in the low-voltage switch cabinet body 11 increases, and the pressure causes the pressure relief plate 13 to rotate. Under the elastic deformation of the U-shaped elastic frame 22 and the rotation of the first auxiliary roller 23, the fixing rod 21 is pulled out of the U-shaped elastic frame 22, thereby driving the pressure relief plate 13 to rotate and open on the pressure relief frame 12 to relieve pressure on the low-voltage switch cabinet body 11. When the pressure relief plate 13 is quickly opened to relieve pressure, the slider 42 is pushed to slide in the slideway 41 through the connecting rod 45, and the pressure relief plate 13 is assisted to open, and the pressure relief plate 13 is pulled through the second mounting seat 43, the third mounting seat 44 and the connecting rod 45 to prevent the pressure relief plate 13 from falling off and causing personal injury, thereby improving safety.

[0035] like Figures 1 to 6As shown, a low-voltage switch cabinet safety pressure relief device of the utility model is provided. When the pressure relief plate 13 is to be fixed, the fixing rod 21 is brought into contact with the first auxiliary roller 23, and the fixing rod 21 squeezes the first auxiliary roller 23. Due to the elastic deformation of the U-shaped elastic frame 22 and the rotation of the first auxiliary roller 23, the fixing rod 21 enters the U-shaped elastic frame 22, and the fixing rod 21 is fixed by the second auxiliary roller 24 and the first auxiliary roller 23. When the low-voltage switch cabinet body 11 is to be depressurized, the pressure in the low-voltage switch cabinet body 11 increases, and the pressure causes the pressure relief plate 13 to rotate. Under the elastic deformation of the U-shaped elastic frame 22 and the first auxiliary roller 23, the fixing rod 21 enters the U-shaped elastic frame 22, and the fixing rod 21 is fixed by the second auxiliary roller 24 and the first auxiliary roller 23. Under the rotation of an auxiliary roller 23, the fixing rod 21 is pulled out of the U-shaped elastic frame 22, thereby driving the pressure relief plate 13 to rotate and open on the pressure relief frame 12 to relieve pressure on the low-voltage switch cabinet body 11. When the pressure relief plate 13 is quickly opened when the pressure is relieved, the pressure relief plate 13 is pulled by the chain 32 to prevent the pressure relief plate 13 from falling off and causing personal injury, thereby improving safety. When the pressure relief plate 13 is quickly opened when the pressure is relieved, the slider 42 is pushed to slide in the slide 41 through the connecting rod 45 to assist the pressure relief plate 13 in opening, and the pressure relief plate 13 is pulled by the second mounting seat 43, the third mounting seat 44 and the connecting rod 45 to prevent the pressure relief plate 13 from falling off and causing personal injury, thereby improving safety.

[0036] The main functions achieved by the utility model are: during the pressure relief operation of the low-voltage switch cabinet, it is convenient to quickly fix and reuse the pressure relief plate 13, thereby reducing costs, and preventing the pressure relief plate 13 from falling off during pressure relief to cause personal injury, thereby improving safety and practicality.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A low-voltage switch cabinet safety pressure relief device, comprising a low-voltage switch cabinet body (11); characterized in that: It also includes a pressure relief mechanism (01), a fixing mechanism (02) and a connection protection mechanism, wherein the fixing mechanism (02) is installed on the pressure relief mechanism (01), and the connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body (11); The pressure relief mechanism (01) seals the low-voltage switch cabinet body (11); the fixing mechanism (02) facilitates quick fixing of the pressure relief mechanism (01) and assists the pressure relief mechanism (01) in relieving pressure; and the connection protection mechanism connects the pressure relief mechanism (01) to the low-voltage switch cabinet body (11).

2. A low-voltage switch cabinet safety pressure relief device according to claim 1, characterized in that: The pressure relief mechanism (01) comprises a pressure relief frame (12) and a pressure relief plate (13); the pressure relief frame (12) is mounted on the side wall of the low-voltage switch cabinet body (11); and the pressure relief plate (13) is rotatably mounted on the pressure relief frame (12).

3. A low-voltage switch cabinet safety pressure relief device as claimed in claim 2, characterized in that: The fixing mechanism (02) comprises a fixing rod (21), a U-shaped elastic frame (22), two first auxiliary rollers (23) and a second auxiliary roller (24); the fixing rod (21) is mounted on the pressure relief plate (13) through a mounting frame; the U-shaped elastic frame (22) is mounted on the outer wall of the low-voltage switch cabinet body (11); an opening is provided on the U-shaped elastic frame (22); the U-shaped elastic frame (22) is elastic; the two first auxiliary rollers (23) are rotatably mounted at the opening of the U-shaped elastic frame (22); the second auxiliary roller (24) is rotatably mounted inside the U-shaped elastic frame (22), and the second auxiliary roller (24) is aligned with the opening of the U-shaped elastic frame (22).

4. A low-voltage switch cabinet safety pressure relief device as claimed in claim 2, characterized in that: A connection protection mechanism is installed on the outer wall of the low-voltage switch cabinet body (11).

5. A low voltage switch cabinet safety pressure relief device as claimed in claim 2, characterized in that: The connection protection mechanism may be a first connection protection mechanism (03), the first connection protection mechanism (03) comprising a first mounting seat (31) and a chain (32), the first mounting seat (31) being mounted on the outer wall of the low-voltage switch cabinet body (11), one end of the chain (32) being mounted on the first mounting seat (31), and the other end of the chain (32) being mounted on the pressure relief plate (13).

6. A low-voltage switch cabinet safety pressure relief device as claimed in claim 2, characterized in that: The connection protection mechanism can also be a second connection protection mechanism (04), which includes a slideway (41), a slider (42), a second mounting seat (43), a third mounting seat (44) and a connecting rod (45), wherein the slideway (41) is mounted on the outer wall of the low-voltage switch cabinet body (11), the slider (42) is slidably mounted in the slideway (41), the second mounting seat (43) is mounted on the slider (42), the third mounting seat (44) is mounted on the pressure relief plate (13), one end of the connecting rod (45) is rotatably mounted on the third mounting seat (44), and the other end of the connecting rod (45) is rotatably mounted on the second mounting seat (43).

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