Pressure relief base of environment-friendly cabinet

Abstract

An environment-friendly cabinet pressure relief base comprises a front cabinet body and a rear cabinet body, a cross beam is horizontally arranged on the side, close to the front cabinet body, of the upper portion of the rear cabinet body, the cross beam is fixed to one end of a guide inclined plate, and the other end of the guide inclined plate is arranged in a downward inclined mode in the direction away from the front cabinet body and fixed to a vertical partition vertical plate; the lower end of the spacing vertical plate is fixed on a horizontal supporting base plate, two pressure relief holes are formed in the two side faces, close to and away from the front cabinet body, of the spacing vertical plate of the supporting base plate respectively, and a first pressure relief plate and a second pressure relief plate are arranged at the positions of the two pressure relief holes respectively; the supporting base plate is higher than the lower end face of the rear cabinet body. A novel pressure relief mode different from upward pressure relief is provided, downward pressure relief can be achieved by arranging the base, and the structure has universality and can be used after being directly combined with components of the environment-friendly cabinet.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection cabinet technology, specifically to an environmental protection cabinet pressure relief base. Background Technology

[0002] In the event of insulation failure, environmental protection cabinets may experience breakdown due to high voltage and generate electric arcs. This can cause internal gas to expand and damage the cabinet and internal components. To avoid the impact of the explosive gas flow, existing environmental protection cabinets are usually equipped with pressure relief channels, which are generally upward-facing. By placing the pressure relief port at the top of the cabinet, damage to the horizontal environment can be avoided. However, some indoor environments cannot use the upward pressure relief method. Utility Model Content

[0003] To address the issue that the pressure relief direction of the aforementioned environmental protection cabinets is primarily upward, making them unsuitable for certain scenarios, this utility model provides a pressure relief base for environmental protection cabinets.

[0004] The technical solution of this utility model is as follows:

[0005] An environmental protection cabinet pressure relief base includes a front cabinet and a rear cabinet. A horizontal beam is provided on the upper side of the rear cabinet near the front cabinet, and the beam is fixed to one end of a guide inclined plate. The other end of the guide inclined plate is inclined downward in a direction away from the front cabinet and is fixed to a vertical partition plate.

[0006] The lower end of the partition plate is fixed on a horizontal support base plate, and the support base plate is provided with two pressure relief holes on the two sides of the partition plate that are close to and far from the front cabinet, and a first pressure relief plate and a second pressure relief plate are provided at the two pressure relief hole positions respectively.

[0007] The supporting base plate is positioned above the lower end surface of the rear cabinet.

[0008] A new pressure relief method is provided. By setting this base, downward pressure relief can be achieved. Moreover, the above structure is versatile and can be directly combined with the components of the environmental protection cabinet in most scenarios.

[0009] To guide airflow, the partition plate is provided with openings, and a ventilation mesh is provided on the side of the opening away from the front cabinet.

[0010] As a preferred embodiment, there is no gap between the two ends of the supporting base plate and the two sides of the rear cabinet.

[0011] The pressure relief hole is set in such a way that the end of the support base away from the front cabinet is inclined downward and fixed to the base of the rear cabinet, and the pressure relief hole is set on the inclined surface.

[0012] In order to guide the explosive gas flow, a support perforated plate is provided below one end of the support base plate near the front cabinet, and the support perforated plate has an opening at the pressure relief hole position.

[0013] In order to separate the pressure relief plate from the support base plate under high pressure, both the first pressure relief plate and the second pressure relief plate are located on the side of the support base plate close to the support hole plate.

[0014] To ensure the flow guiding effect, the first pressure relief plate and the second pressure relief plate can be separated from the supporting substrate after being compressed.

[0015] In order to guide the explosive gas flow downwards, the guide ramp is tilted downwards at an angle greater than 45° relative to the horizontal.

[0016] The guide ramp is fixed by means of bent plates on both sides of the guide ramp, and the bent plates are fixed to the side plate of the rear cabinet by bolts.

[0017] To provide more airflow channels, the openings in the support plate extend beyond the end of the support base plate near the front cabinet.

[0018] The beneficial effects of this utility model are as follows: This utility model is a pressure relief base for an environmental protection cabinet. Unlike the existing pressure relief method on the top of the environmental protection cabinet, this device provides a more versatile base structure that can be directly used as part of the environmental protection cabinet. When an electric arc explosion occurs in the environmental protection cabinet, the explosive airflow can be guided downwards by the guide plate and relieved through two pressure relief plates. When the airflow is not large, the airflow can be guided by the support plate and the support base plate that does not contact the cabinet body at both ends without the pressure relief plate being separated by impact. The ventilation mesh plate and the second pressure relief plate can be used to solve the normal pressure relief problem after the current transformer installed in the pressure relief base cavity experiences an electric arc explosion. Attached Figure Description

[0019] The advantages and solutions of this application will become clear to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this invention.

[0020] In the attached diagram:

[0021] Figure 1 This is a front view structural diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the front sectional view of the present invention;

[0023] Figure 3 for Figure 2 Schematic diagram of a partial structure;

[0024] Figure 4 This is a side view of the structure of this utility model;

[0025] The components represented by the various reference numerals in the diagram are:

[0026] 1. Rear cabinet; 2. Front cabinet; 3. Horizontal beam; 4. Guide ramp; 5. Partition plate; 6. Ventilation mesh plate; 7. Support base plate; 8. First pressure relief plate; 9. Second pressure relief plate; 10. Support perforated plate. Detailed Implementation

[0027] Example

[0028] like Figure 1 , 2 As shown in Figure 4, an environmental protection cabinet pressure relief base includes a front cabinet 2 and a rear cabinet 1. The front cabinet 2 is higher than the rear cabinet 1. A horizontal beam 3 is horizontally arranged on the upper side of the rear cabinet 1 near the front cabinet 2. The beam 3 is fixed to the side panel of the rear cabinet 1 to ensure stable fixation. The beam 3 is then fixed to one end of a guide ramp 4. The guide ramp 4 is used to guide airflow. Therefore, the other end of the guide ramp 4 is inclined downwards away from the front cabinet 2. That is, the airflow is guided downwards by the upper surface of the guide ramp 4. To ensure the guiding effect on the airflow, the angle of the guide ramp 4 downwards relative to the horizontal is greater than 45°. Figure 2 As shown, by adopting the above setting method, it is possible to avoid excessive airflow being directed to the side plate or directly impacting the guide plate 4, which would lead to failure of the pressure relief mechanism or a decrease in its effectiveness.

[0029] Since guide ramp 4 needs to guide airflow, in order to fix its position and avoid affecting the structure connected to it and the subsequent pressure relief structure, such as... Figure 1 , 2 As shown, the guide ramp 4 is fixed by means of bent plates on both sides of the guide ramp 4, and the bent plates are fixed to the side plate of the rear cabinet 1 by bolts. In this way, it can be fixed from multiple positions to ensure that it will not directly detach from the preset position when an explosive gas flow occurs.

[0030] The guide ramp 4 is then fixed to the vertical spacer plate 5, and the lower end of the spacer plate 5 is fixed to the horizontal support base plate 7, as shown. Figure 3As shown, the supporting base plate 7 has two pressure relief holes on the two sides of the spacer plate 5, one near and one far from the front cabinet 2. A first pressure relief plate 8 and a second pressure relief plate 9 are respectively installed at the two pressure relief holes. To ensure the airflow guiding effect, the first pressure relief plate 8 and the second pressure relief plate 9 can separate relative to the supporting base plate 7 after being pressed. After separation, the pressure relief holes covered by the first pressure relief plate 8 and the second pressure relief plate 9 are exposed. In this way, the airflow can be guided downwards through the pressure relief holes, and sufficient pressure relief channels are provided for pressure relief. Therefore, the larger the pressure relief hole, the better the pressure relief effect. However, it is necessary to avoid making the pressure relief hole too large, resulting in a large pressure relief plate 9, which may prevent it from opening even with good fixation. It should be noted that in the above structure, the supporting base plate 7 is positioned higher than the lower end of the rear cabinet 1 to avoid direct contact with the ground, which would result in insufficient pressure relief space and prevent normal airflow passage. Furthermore, the specific design method is to guide the explosive airflow, such as... Figure 3 As shown, a support perforated plate 10 is provided below one end of the support base plate 7 near the front cabinet 2. The support perforated plate 10 has an opening at the pressure relief hole position, allowing airflow to pass through, and the size of the opening is larger than the sum of the two pressure relief holes. In order to achieve separation of the pressure relief plate from the support base plate 7 under high pressure, the first pressure relief plate 8 and the second pressure relief plate 9 are both located on the side of the support base plate 7 near the support perforated plate 10. At this time, the thrust generated by the direction of airflow can push the pressure relief plate to separate relative to the support base plate 7, thereby opening the pressure relief hole.

[0031] Therefore, the above structure can achieve a new pressure relief method, which is different from the pressure relief arrangement structure on the top and side. By setting this base, downward pressure relief can be achieved. Moreover, the above structure is versatile and can be directly combined with the components of the environmental protection cabinet in most scenarios.

[0032] As a preferred embodiment, such as Figure 3 , 4 As shown, in order to guide airflow, the partition plate 5 is provided with openings, and a ventilation mesh plate 6 is provided on the side of the opening away from the front cabinet 2. The ventilation mesh plate 6 is provided with ventilation holes, which can also be used for airflow to pass through.

[0033] Furthermore, since the airflow impact is not significant in some cases, to ensure proper airflow guidance, the following structural arrangement can be adopted: the two ends of the support base plate 7 have no gap with the two sides of the rear cabinet 1, thus preventing the airflow from the gas box explosion from entering the chamber where the current transformer is located. Correspondingly, to obtain more airflow channels, the opening of the support perforated plate 10 extends beyond the end of the support base plate 7 closest to the front cabinet 2. With the above arrangement, normal airflow can be achieved even when the pressure relief plates of the two pressure relief holes are not separated.

[0034] Finally, as a preferred embodiment, the pressure relief hole is set in such a way that the end of the support base plate 7 away from the front cabinet 2 is inclined downward and fixed to the base of the rear cabinet 1, and the pressure relief hole is set on the inclined surface. The inclined setting can ensure that the support base plate 7 can obtain the support effect while also being affected by the airflow to generate a downward thrust.

Claims

1. A pressure relief base for an environmental protection cabinet, comprising a front cabinet (2) and a rear cabinet (1), characterized in that, A horizontal beam (3) is provided on the side of the rear cabinet (1) near the front cabinet (2), and the beam (3) is fixed to one end of the guide inclined plate (4). The other end of the guide inclined plate (4) is inclined downward in the direction away from the front cabinet (2) and is fixed to the vertical partition plate (5). The lower end of the partition plate (5) is fixed on the horizontal support base plate (7), and the support base plate (7) provides two pressure relief holes on the two sides of the partition plate (5) near and away from the front cabinet (2), and provides a first pressure relief plate (8) and a second pressure relief plate (9) at the two pressure relief hole positions respectively. The supporting base plate (7) is positioned above the lower end face of the rear cabinet (1).

2. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, The partition plate (5) is provided with an opening, and a ventilation mesh plate (6) is provided on the side of the opening away from the front cabinet (2).

3. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, There is no gap between the two ends of the support base plate (7) and the two sides of the rear cabinet (1).

4. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, The supporting base plate (7) is inclined downward at one end away from the front cabinet (2) and fixed to the base of the rear cabinet (1), with the pressure relief hole located on the inclined surface.

5. The pressure relief base for an environmental protection cabinet according to claim 4, characterized in that, The support base plate (7) is provided with a support hole plate (10) at one end near the front cabinet (2), and the support hole plate (10) has an opening at the pressure relief hole position.

6. The pressure relief base for an environmental protection cabinet according to claim 5, characterized in that, The first pressure relief plate (8) and the second pressure relief plate (9) are both located on the side of the support base plate (7) near the support hole plate (10).

7. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, The first pressure relief plate (8) and the second pressure relief plate (9) can be separated from the support substrate (7) after being compressed.

8. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, The guide plate (4) is tilted downward at an angle greater than 45° relative to the horizontal.

9. The pressure relief base for an environmental protection cabinet according to claim 1, characterized in that, The guide ramp (4) is provided with bending plates on both sides, and the bending plates are fixed to the side plate of the rear cabinet (1) by bolts.

10. A pressure relief base for an environmental protection cabinet according to claim 6, characterized in that, The opening of the support plate (10) extends beyond the support base plate (7) to one end near the front cabinet (2).

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