Pressure relief top cover of electrical cabinet body

Abstract

A pressure relief top cover of an electrical cabinet body comprises a top cover. The top cover is provided with a plurality of through holes connected with an electrical cavity in the electrical cabinet body, and the upper ends of the through holes are provided with cover plates with one ends connected to the upper ends of the through holes through rotating shafts and covering the through holes. The air-permeable gap has the advantages that the air-permeable gap has the functions of ventilation and heat dissipation during normal work, rain and water can be effectively prevented, and when the internal pressure exceeds a certain value, the cover plate is burst open by the pressure, and the pressure is relieved; and when the pressure recovers, the cover plate automatically returns, the structure is simple, and the safety performance is good.

Description

Technical Field

[0001] This invention patent relates to a pressure relief top cover for an electrical cabinet. Background Technology

[0002] Existing electrical cabinets are not good at depressurization in terms of explosion protection, and cannot be restored to their original state after depressurization. Summary of the Invention

[0003] The purpose of this invention is to solve the existing technical problems by proposing a pressure relief top cover for an electrical cabinet.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a pressure relief top cover for an electrical cabinet, including a top cover; the top cover is provided with a plurality of through holes connecting to the electrical cavity inside the electrical cabinet, and a cover plate is provided at the upper end of the through hole by means of a rotating shaft and is provided at the upper end of the through hole to cover the through hole.

[0005] Furthermore, the upper end of the through hole is provided with a side wall, the upper end is provided with a flat plate, the flat plate is provided with inclined plates with downward slope around its perimeter, and the side wall is provided with a ventilation gap for the through hole corresponding to the inner wall of the inclined plate.

[0006] Furthermore, the plate has a second through hole in the center, and a second side wall at the upper end of the second through hole. The upper end of the second side wall forms a quadrilateral, and one side of the cover plate is connected to one side of the quadrilateral by a pivot, covering the second through hole.

[0007] Furthermore, a limiting device is provided on one side of the quadrilateral to restrict the degree of rotation of the shaft.

[0008] Furthermore, the flat panel is equipped with L-shaped fixing plates on the front and back of the electrical cabinet. The horizontal part of the L-shaped fixing plate is fixed to the front and back of the quadrilateral by bolts, and the vertical part of the L-shaped fixing plate is higher than the quadrilateral to block the pressure relief airflow.

[0009] Furthermore, when there are two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot.

[0010] Furthermore, when there are more than two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot; and either the left or right side of the cover plate of the middle through hole can be connected to the corresponding side of the corresponding quadrilateral via a pivot.

[0011] Furthermore, fixed baffles are provided on the front, back, left, and right sides of the top cover.

[0012] Furthermore, the upper end of the second sidewall is provided with an outward-facing edge, and the side of the second sidewall is provided with an extension section corresponding to the pivot. The extension section is provided with a pivot hole, and the two ends of the pivot are set in two corresponding pivot holes.

[0013] Furthermore, the cover plate has a lower edge around its perimeter, with the inner side of the lower edge corresponding to the outer side of the outer edge, and a limiting part is provided on the corresponding pivot side of the second side wall to restrict the cover plate from approaching.

[0014] The beneficial effects of this invention are: when working normally, the vent gap serves the functions of ventilation and heat dissipation, and can effectively prevent rain and water. When the internal pressure exceeds a certain value, the pressure will push the cover plate open to release the pressure. When the pressure is restored, the cover plate will automatically return to its original position. The structure is simple and the safety performance is good. Attached Figure Description

[0015] Figure 1 For structural illustration Figure 1 .

[0016] Figure 2 For structural illustration Figure 2 .

[0017] Figure 3 For structural illustration Figure 3 . Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0019] Example 1 combined with appendix Figure 1-3 A pressure relief top cover for an electrical cabinet includes a top cover 1; the top cover is provided with a plurality of through holes 2 connecting to the electrical cavity inside the electrical cabinet, and a cover plate 3 is provided at the upper end of the through holes, which is connected to the upper end of the through holes by a rotating shaft 4 and covers the through holes.

[0020] An electrical cabinet pressure relief top cover has a side wall 5 at the upper end of the through hole, a flat plate 6 at the upper end, and inclined plates 7 with downward slopes around the flat plate. The side wall has a ventilation gap with a flow through hole at the inner wall of the inclined plate.

[0021] A pressure relief top cover for an electrical cabinet has a second through hole 8 in the center of a flat plate, a second side wall 9 at the upper end of the second through hole, the upper end of the second side wall forming a quadrilateral, and one side of the cover plate connected to one side of the quadrilateral by a pivot to cover the second through hole.

[0022] An electrical cabinet pressure relief top cover has a limit device on one side of its quadrilateral shape to limit the rotation degree of the rotating shaft from exceeding 90 degrees.

[0023] An electrical cabinet pressure relief top cover has an L-shaped fixing plate 10 on a flat plate corresponding to the front and back of the electrical cabinet. The horizontal part of the L-shaped fixing plate is fixed to the front and back sides of the quadrilateral by bolts, and the vertical part of the L-shaped fixing plate is higher than the quadrilateral to block the pressure relief airflow.

[0024] A pressure relief top cover for an electrical cabinet, wherein when there are two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; and the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot.

[0025] A pressure relief top cover for an electrical cabinet, wherein when there are more than two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot; and either the left or right side of the cover plate of the middle through hole can be connected to the corresponding side of the corresponding quadrilateral via a pivot.

[0026] A pressure relief top cover for an electrical cabinet, wherein fixed baffles 11 are provided on the front, back, left and right sides of the top cover.

[0027] An electrical cabinet pressure relief top cover has an outward-facing edge on the upper end of the second side wall, and an extension section is provided on the side of the second side wall corresponding to the pivot. The extension section has a pivot hole, and the two ends of the pivot are set in two corresponding pivot holes.

[0028] An electrical cabinet pressure relief top cover has a lower edge around the cover plate, with the inner side of the lower edge corresponding to the outer side of the outer edge, and a limiting part is provided on the corresponding pivot side of the second side wall to restrict the cover plate from approaching.

[0029] An electrical cabinet pressure relief cover has a ventilation gap that allows for ventilation and heat dissipation during normal operation, and is also effective in preventing rain and water damage. When the internal pressure exceeds a certain value, the pressure will force the cover open to release the pressure. When the pressure returns to normal, the cover will automatically return to its original position. The structure is simple and the safety performance is good.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pressure relief top cover for an electrical cabinet, comprising a top cover; characterized in that: The top cover has several through holes for connecting to the electrical cavities inside the electrical cabinet. At the top of each through hole is a cover plate that is connected to the top of the through hole via a rotating shaft and covers the through hole.

2. The pressure relief top cover of an electrical cabinet according to claim 1, characterized in that: The upper end of the through hole is provided with a side wall, and the upper end is provided with a flat plate. The flat plate is surrounded by inclined plates with downward slopes. The side wall is provided with a ventilation gap for the through hole at the inner wall of the inclined plate.

3. The pressure relief top cover of an electrical cabinet according to claim 2, characterized in that: The plate has a second through hole in the center, and a second side wall at the upper end of the second through hole. The upper end of the second side wall forms a quadrilateral, and one side of the cover plate is connected to one side of the quadrilateral by a pivot, covering the second through hole.

4. A pressure relief top cover for an electrical cabinet according to claim 3, characterized in that: One side of the quadrilateral is equipped with a limiting device that restricts the degree of rotation of the shaft.

5. A pressure relief top cover for an electrical cabinet according to claim 3, characterized in that: The flat panel has L-shaped fixing plates on the front and back of the electrical cabinet. The horizontal part of the L-shaped fixing plate is fixed to the front and back of the quadrilateral by bolts. The vertical part of the L-shaped fixing plate is higher than the quadrilateral to block the pressure relief airflow.

6. A pressure relief top cover for an electrical cabinet according to claim 1, characterized in that: When there are two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot.

7. The pressure relief top cover of an electrical cabinet according to claim 1, characterized in that: When there are more than two through holes, the left side of the cover plate of the left through hole is connected to the left side of the corresponding quadrilateral via a pivot; the right side of the cover plate of the right through hole is connected to the right side of the corresponding quadrilateral via a pivot; and either the left or right side of the cover plate of the middle through hole can be connected to the corresponding side of the corresponding quadrilateral via a pivot.

8. The pressure relief top cover of an electrical cabinet according to claim 3, characterized in that: Fixed baffles are provided on the front, back, left and right sides of the top cover.

9. The pressure relief top cover of an electrical cabinet according to claim 4, characterized in that: The upper end of the second sidewall is provided with an outward-facing edge, and the side of the second sidewall is provided with an extension section corresponding to the pivot. The extension section is provided with a shaft hole, and the two ends of the pivot are set in two corresponding shaft holes.

10. A pressure relief top cover for an electrical cabinet according to claim 9, characterized in that: The cover plate has a lower edge around its perimeter, with the inner side of the lower edge corresponding to the outer side of the outer edge, and a limiting part is provided on the corresponding pivot side of the second side wall to restrict the cover plate from approaching.

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