Explosion-proof centrally installed switchgear

Abstract

The utility model provides an explosion-proof centrally installed switchgear, and belongs to the technical field of centrally installed switchgears. The explosion-proof centrally installed switchgear comprises a switchgear body and a cover plate. The cabinet body comprises a primary bus chamber and a primary cable chamber which are mutually independent. The primary bus chamber is communicated with the outside through the first opening, the primary cable chamber is communicated with the outside through the second opening, and the first opening and the second opening face the upper portion of the cabinet body in the vertical direction. The covering plate covers the first opening and the second opening, one end of the covering plate is connected with the cabinet body and can rotate relative to the cabinet body, the other end of the covering plate is fixed on the cabinet body through a fusible part, and the fusible part is fused at a preset temperature. When the explosion-proof centrally installed switchgear provided by the utility model generates electric arc in the use process to raise the internal temperature and then explode, the explosion airflow rushes to the upper part of the centrally installed switchgear in the vertical direction, so that the injury to people around the centrally installed switchgear is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of the centrally installed switchgear, especially to an explosion-proof centrally installed switchgear. BACKGROUND

[0002] The centrally installed switchgear is a kind of high-voltage distribution device, which is designed in a three-layer structure, with the upper layer being busbar room and instrument room isolated from each other for displaying and monitoring circuit state, the middle layer being circuit breaker room with disconnecting switch installed, and the lower layer being cable room for connecting incoming and outgoing cables.

[0003] In the power distribution system of the centrally installed switchgear, when the switchgear attempts to cut off high-current circuit, due to the strong current, electric arc is often generated between the contacts of the switch. Or due to the failure of the power distribution system of the centrally installed switchgear, electric arc is also generated in the power distribution system.

[0004] The existing centrally installed switchgear is a relatively sealed cabinet. When electric arc is generated inside the centrally installed switchgear, the electric arc generates high temperature inside the centrally installed switchgear. When the electric arc energy is large enough, it rapidly heats the surrounding air and insulating material, causing the gas to rapidly expand in the limited space and explode, which seriously threatens the personal safety of the surrounding personnel. SUMMARY

[0005] An object of the utility model is to solve the problem that the existing centrally installed switchgear is prone to explosion when electric arc is generated inside, which seriously threatens the personal safety of the surrounding personnel.

[0006] In particular, the embodiments of the present application provide an explosion-proof centrally installed switchgear, which comprises:

[0007] a cabinet, which comprises independent primary busbar room and primary cable room, the primary busbar room is communicated with the outside through a first opening, the primary cable room is communicated with the outside through a second opening, the first opening and the second opening are directed upward in the vertical direction of the cabinet; and

[0008] a cover plate, which covers the first opening and the second opening, one end of the cover plate is connected with the cabinet and can rotate relative to the cabinet, the other end is fixed on the cabinet through a fusible element, and the fusible element melts at a preset temperature.

[0009] Further, the cover plate comprises a first plate and a second plate, the first plate covers the first opening, and the second plate covers the second opening.

[0010] Further, the first plate and the second plate are of the same size.

[0011] Further, the explosion-proof indoor unit further includes a guide sleeve, the guide sleeve is sleeved above the cabinet and covers the first opening and the second opening, and is used for guiding the debris generated after explosion in the indoor unit.

[0012] Further, the explosion-proof indoor unit further includes a filter element installed on the guide sleeve and used for filtering the debris.

[0013] Further, the filter element includes a filter screen.

[0014] Further, the filter screen is provided in plurality and is sequentially stacked, and the mesh number of each filter screen gradually increases along the direction away from the cover plate.

[0015] Further, the filter element is detachably connected with the guide sleeve.

[0016] The explosion-proof indoor unit has the following advantages:

[0017] 1. The cover plate is arranged to be opened when explosion occurs in the indoor unit, so that the pressure in the indoor unit is timely released, explosion of the indoor unit under high pressure is avoided, and greater damage is caused. The first opening and the second opening are arranged to be above the vertical direction of the indoor unit, so that the explosion gas flow is directed to the upper part of the vertical direction of the explosion-proof indoor unit, and the explosion gas flow is prevented from causing harm to the workers around the explosion-proof indoor unit.

[0018] 2. The cover plate is arranged to be respectively covered on the first plate and the second plate of the first opening and the second opening, when explosion occurs in one of the busbar chamber or the first cable chamber, the opening of the other is still covered by the cover plate, so that the sparks generated by explosion are prevented from entering the other, causing explosion of the other, leading to explosion superposition, and causing greater damage.

[0019] 3. The guide sleeve is arranged to guide the parts carried out by the explosion gas flow to the unmanned area, and the safety of the explosion-proof indoor unit of the utility model in use is enhanced.

[0020] 4. The filter element is arranged to prevent the parts carried out by the explosion gas flow from scattering around and causing injury to the surrounding workers BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structural schematic view of the explosion-proof indoor unit according to an embodiment of the utility model.

[0022] In the drawing:

[0023] 100-explosion-proof indoor unit; 1-cabinet; 2-cover plate; 3-busbar chamber; 4-first cable chamber; 5-first opening; 6-second opening; 7-guide sleeve; 8-filter element; 9-receiving cavity. DETAILED DESCRIPTION

[0024] In order to make the above objectives, features and advantages of the present application more apparent, specific embodiments of the present application are described in detail below with reference to the accompanying drawings. It can be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application. In addition, it should be noted that, for the purpose of description, only the parts related to the present application are shown in the drawings, rather than all the structures. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0025] The terms "comprising" and "having" and any variations thereof in the present application are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device including a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.

[0026] Reference to "embodiments" herein means that the specific features, structures or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears at various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] The explosion-proof central cabinet 100 of the utility model includes cabinet body 1 and covering plate 2. Cabinet body 1 includes primary busbar room 3 and primary cable room 4 which are independent of each other. Primary busbar room 3 is communicated with the outside through first opening 5, and primary cable room 4 is communicated with the outside through second opening 6. First opening 5 and second opening 6 are towards the upper part of the vertical direction of cabinet body 1. Covering plate 2 covers first opening 5 and second opening 6, one end of covering plate 2 is connected with cabinet body 1 and can rotate relative to cabinet body 1, and the other end is fixed on cabinet body 1 through fusible element (not shown), and the fusible element melts at a preset temperature.

[0028] When the explosion inside the explosion-proof cubicle 100 is caused by the arc inside the cubicle, the temperature inside the cubicle rises, and when the temperature rises to the preset temperature, the fusible part melts, the other end of the cover plate 2 is separated from the cabinet 1, and becomes a free end. When the explosion inside the cubicle continues to rise to cause an explosion inside the cubicle, the gas flow generated by the explosion lifts the cover plate 2 from the free end, and the cover plate 2 rotates around the end connected to the cabinet 1 as the rotating shaft, and the cover plate 2 is lifted by the explosion gas flow. The explosion gas flow is sprayed from the first opening 5 or the second opening 6 to the vertical direction of the explosion-proof cubicle 100. By lifting the cover plate 2 at the time of explosion, the pressure inside the cubicle is relieved in time, and the explosion of the cubicle under high pressure is avoided, which causes greater damage. The first opening 5 and the second opening 6 are arranged to face upward in the vertical direction of the cubicle, so that the explosion gas flow is directed upward in the vertical direction of the explosion-proof cubicle 100, avoiding injury to the workers around the explosion-proof cubicle 100.

[0029] In one embodiment, the cover plate 2 is a single plate, the first opening 5 and the second opening 6 are located at the same horizontal height, and the same cover plate 2 covers the first opening 5 and the second opening 6 at the same time. Whether it is a primary busbar chamber 3 or a primary cable chamber 4, the cover plate 2 will be lifted by the explosion gas flow. In another embodiment, the cover plate 2 includes a first plate and a second plate, the first plate covers the first opening 5, and the second plate covers the second opening 6. When an explosion occurs inside the primary busbar chamber 3, the first plate is lifted by the explosion gas flow, and the second plate is still fixed to the cabinet 1. By arranging the cover plate 2 as a first plate and a second plate covering the first opening 5 and the second opening 6 respectively, when an explosion occurs inside one of the primary busbar chamber 3 or the first cable chamber, the opening of the other is still covered by the cover plate 2, avoiding the entry of sparks and the like generated by the explosion into the other, causing the other to explode, leading to explosion superposition, causing greater damage.

[0030] As for the size of the first plate and the second plate, in one embodiment, the first plate and the second plate are the same size, reducing the processing difficulty and thus reducing the production cost.

[0031] In one embodiment, the explosion-proof cubicle 100 of the utility model further includes a guide sleeve 7. The guide sleeve 7 is arranged above the cabinet 1 and covers the first opening 5 and the second opening 6, and is used for guiding the debris generated after the explosion inside the cubicle. When an explosion occurs inside the cubicle, the explosion gas flow will bring out the parts inside the cubicle, and the parts brought out may injure the surrounding workers. By arranging the guide sleeve 7, the parts brought out by the explosion gas flow are guided to the unoccupied area, enhancing the safety of the explosion-proof cubicle 100 of the utility model in use.

[0032] The explosion-proof centrally installed cabinet 100 further comprises a filter 8 arranged on the guide sleeve 7 and used for filtering the debris.

[0033] In one embodiment, the filter 8 comprises a filter screen.

[0034] In one embodiment, the filter screen is arranged in multiple layers, and the mesh number of each filter screen gradually increases in the direction away from the cover plate 2.

[0035] In one embodiment, the filter 8 is detachably connected with the guide sleeve 7.

[0036] As shown in the drawings, the cabinet body 1 further comprises other chambers independent of the primary busbar chamber 3 and the primary cable chamber 4. Figure 1 As shown in the drawings, the cabinet body 1 further comprises other chambers independent of the primary busbar chamber 3 and the primary cable chamber 4.

[0037] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An explosion-proof indoor switchgear, characterized by, The utility model relates to a kind of indoor unit of air-conditioning, including: Cabinet, including mutually independent primary bus chamber and primary cable chamber in the cabinet, the primary bus chamber is communicated with outside by first opening, the primary cable chamber is communicated with outside by second opening, the first opening and the second opening are towards the vertical direction upper of the cabinet; And Covering plate, covering the first opening and the second opening, one end of the covering plate is connected with the cabinet and can rotate relative to the cabinet, the other end is fixed on the cabinet by fusible element, the fusible element melts at preset temperature.

2. The explosion-proof indoor switchgear according to claim 1, characterized in that The covering plate includes first plate and second plate, the first plate covers the first opening, and the second plate covers the second opening.

3. The explosion-proof indoor switchgear according to claim 2, characterized in that The first plate and the second plate are the same size.

4. The explosion-proof indoor switchgear according to claim 1, characterized in that, Further including guide sleeve, the guide sleeve is sleeved on the cabinet and covers the first opening and the second opening, for guiding the debris generated after the internal explosion of center cabinet.

5. The explosion-proof indoor switchgear according to claim 4, characterized in that Further including filter element installed on the guide sleeve for filtering the debris.

6. The explosion-proof indoor switchgear according to claim 5, characterized in that The filter element includes filter screen.

7. The explosion-proof indoor switchgear according to claim 6, characterized in that The number of the filter screen is multiple and is sequentially stacked, and the mesh number of each filter screen gradually increases away from the covering plate.

8. The explosion-proof indoor switchgear according to any of claims 5 to 7, characterized in that The filter element and the guide sleeve are detachably connected.

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