CN212258092U

CN212258092U - Pressure relief cover structure of high-voltage switch cabinet

Info

Publication number: CN212258092U
Application number: CN202021338810.5U
Authority: CN
Inventors: 张国颂
Original assignee: Changsha Xingkong Electric Equipment Co ltd
Current assignee: Changsha Xingkong Electric Equipment Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2020-12-29
Anticipated expiration: 2030-07-09

Abstract

The utility model provides a pressure relief cover structure of a high-voltage switch cabinet, which comprises a rectangular cover plate body, wherein the edge of the periphery of the bottom surface of the cover plate body is provided with a heightening bracket, one side of the cover plate body in the length direction is hinged with the heightening bracket by adopting a hinge, and the other side of the cover plate body in the length direction is fixedly connected with the heightening bracket by adopting a plastic screw; the four side surfaces of the heightening bracket are respectively provided with a vent hole, and the four sides of the cover plate body are respectively provided with an upward right-angled bent edge; the structure that four edges of the cover plate body are respectively provided with the bent edges is adopted, so that the defect of poor overall mechanical strength in the prior art is overcome, the problems that the pressure relief cover is easy to deform and scrap and cannot ventilate and radiate are solved by combining the structure that the periphery of the bottom surface of the cover plate body is provided with the heightening support and the side surface of the heightening support is provided with the vent hole, and the safety distance of an electric gap can be ensured to meet the specified requirement; it is widely suitable for the matching use of the switch cabinet processing operation.

Description

Pressure relief cover structure of high-voltage switch cabinet

Technical Field

The utility model relates to an electrical equipment especially relates to a high tension switchgear pressure release lid structure.

Background

With the development of the power industry, various switch cabinets are developed rapidly, the switch cabinets are mainly used for opening, closing, controlling and protecting electric equipment, a circuit breaker, an isolating switch, a load switch, an operating mechanism, a mutual inductor, various protection devices and the like are installed in a common switch cabinet, an external line is led into the cabinet and then enters each branch control switch, and each branch is provided with various instruments, switch elements and the like according to the needs; as is known, with the popularization of electrical automation, the applications of various electrical devices are increasing, and therefore, the quality of the switch cabinet is also becoming more and more important.

The high-voltage switch cabinet requires that a pressure relief cover is arranged at the top of a bus chamber, because high-temperature and high-pressure gas is instantly generated in the switch cabinet under the action of current of tens of thousands of amperes when a high-voltage accident occurs, the pressure relief cover must be opened in time to release the high-temperature and high-pressure gas, otherwise serious explosion accidents are easy to occur, and potential safety hazards are brought to the operation of the switch cabinet; at present, a pressure relief cover at the top of a high-voltage switch cabinet body is generally manufactured into a flat plate structure form by adopting a galvanized sheet, namely, the pressure relief cover is a rectangular galvanized plate, one side of the pressure relief cover is fixedly connected with the top of the switch cabinet body through a galvanized metal screw, the other side of the pressure relief cover is fixedly connected with the top of the switch cabinet body through a nylon screw, and when accidents such as high-voltage short circuit and the like occur, the pressure relief cover at one side provided with the nylon screw is pushed open, so that the; the structural form that the galvanized sheet is made into the flat plate is adopted, so that the processing is convenient, the operation is simple, but the integral mechanical strength is poor, the pressure relief cover is easy to deform after being impacted by high-pressure gas, the pressure relief cover is scrapped, a new pressure relief cover needs to be made again for replacement, and the maintenance cost is increased; simultaneously, the pressure relief cover adopts a flat plate structure form and cannot be provided with a vent hole, so that heat dissipation of electrical elements in the switch cabinet is not facilitated, the gap distance between the top of the switch cabinet and a copper bar in a bus chamber is smaller, if the vent hole is directly formed in the pressure relief cover with the flat plate structure, the safety distance of an electrical gap cannot meet the specified requirement, and meanwhile, the vent hole in the top of the switch cabinet is easy to fall to cause dust, so that the normal operation of the electrical elements in the switch cabinet is influenced.

Disclosure of Invention

In view of the above situation, an object of the utility model is to provide a high tension switchgear pressure release lid structure, thereby it adopts the structure that apron body four sides are equipped with the limit of bending respectively to overcome prior art and has the relatively poor defect of whole mechanical strength, combine apron body bottom surface to be equipped with all around and fill up the high support, and fill up the structure that high support side was equipped with the ventilation hole, the pressure release lid easy deformation scrapped and can not ventilate radiating problem has been solved, and can ensure that electric clearance safe distance satisfies the requirement of regulation, overall structure scientific and reasonable, and is simple and compact, installation and convenient to use, market prospect is wide, and convenient popularization and use.

In order to achieve the purpose, the pressure relief cover structure of the high-voltage switch cabinet comprises a rectangular cover plate body, wherein the edge of the periphery of the bottom surface of the cover plate body is provided with a heightening bracket, one side of the cover plate body in the length direction is hinged with the heightening bracket by a hinge, and the other side of the cover plate body in the length direction is fixedly connected with the heightening bracket by a plastic screw; the four side surfaces of the heightening support are respectively provided with a vent hole, and the four sides of the cover plate body are respectively provided with an upward right-angle bending edge.

In order to realize the optimization of the structure and the effect, the further measures are as follows: the ventilation holes on each side face of the heightening bracket comprise two or three groups of ventilation holes, and each group of ventilation holes comprise ten bridge-shaped ventilation holes which are parallel to each other and are arranged at equal intervals.

The hole type size of each bridge type ventilation hole in each group of ventilation holes comprises that the length multiplied by the width is 20 multiplied by 5mm, and the height of a gap punched at two sides of the length direction of each bridge type ventilation hole is 0.5 mm.

The height dimension of the heightening support is 80-100 mm.

The cover plate body comprises four bent edges, and the bent edges are integrally bent and formed by cold-rolled steel plates with the thickness of 1.2 mm.

The utility model discloses compare the produced beneficial effect of prior art:

the utility model discloses a four sides of apron body are equipped with the structure of ascending right angle limit of bending respectively, can promote the whole mechanical strength of apron by a wide margin, can avoid the apron to take place to warp when receiving high-pressure gas to scrap easily, one side of combining apron body length direction is articulated with bed hedgehopping support, the opposite side adopts plastics screw fastening connection, utilize the relatively poor and easy cracked characteristic of receiving the impact of plastics screw intensity, make things convenient for the pressure release lid to receive high-pressure gas to strike and can open in time, be favorable to the repeated multiple use of pressure release lid, thereby reduced the maintenance cost of equipment;

(II) the utility model discloses a bottom surface of apron body all around edge is equipped with bed hedgehopping support to and bed hedgehopping support's four sides set up the structure of ventilation hole, utilize the side to set up the ventilation hole, both can dispel the heat and reduce the temperature in the cubical switchboard, the side is difficult for the deposition with the top simultaneously, reducible dust gets into in the cubical switchboard, thereby be favorable to protecting the electrical element in the cubical switchboard, improve the life of equipment such as each electrical element, combine to set up bed hedgehopping support, can ensure that the electrical clearance safe distance of generating line room satisfies the specified requirement, be favorable to the safe and reliable operation of cubical switchboard;

(III) the utility model discloses a thereby apron body four sides are equipped with the structure on the limit of bending respectively and overcome prior art and have the relatively poor defect of whole mechanical strength, combine apron body bottom surface to be equipped with all around bed hedgehopping support and bed hedgehopping support side is equipped with the structure in ventilation hole, solved the pressure release lid and warp easily and scrap and can not ventilate radiating problem, and can ensure the requirement that electric clearance safe distance satisfies the regulation, overall structure scientific and reasonable, simple compactness, and convenient to use, economic benefits and social that have showing.

The utility model discloses extensively be applicable to the supporting use of cubical switchboard processing operation.

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

Fig. 1 is a schematic view of the overall structure of the present invention.

In the figure: 1-cover plate body, 11-bent edge, 2-heightening bracket, 21-vent hole, 3-hinge and 4-plastic screw.

Detailed Description

Referring to fig. 1, the present invention is implemented as follows: a pressure relief cover structure of a high-voltage switch cabinet comprises a rectangular cover plate body 1, wherein the periphery of the bottom surface of the cover plate body 1 is provided with a heightening bracket 2, one side of the cover plate body 1 in the length direction is hinged with the heightening bracket 2 through a hinge 3, and the other side of the cover plate body 1 in the length direction is fixedly connected with the heightening bracket 2 through a plastic screw 4; the four side surfaces of the heightening bracket 2 are respectively provided with a vent hole 21, and the four sides of the cover plate body 1 are respectively provided with an upward right-angle bending edge 11.

Referring to fig. 1, the ventilation holes 21 on each side of the bed hedge bracket 2 of the present invention include two or three sets of ventilation holes, each set of ventilation holes includes ten bridge-shaped ventilation holes that are parallel to each other and are equidistantly arranged, generally, three sets of ventilation holes are uniformly arranged on the side of the bed hedge bracket 2 in the length direction, and two sets of ventilation holes are uniformly arranged on the side of the bed hedge bracket 2 in the width direction, so that the ventilation and heat dissipation requirements of the switch cabinet bus chamber can be satisfied; the pass size in every bridge type ventilation hole in every group ventilation hole 21 includes that length is wide for 20 x 5mm, and the gap height that the bridge type ventilation hole length direction both sides were washed up is 0.5mm, adopts the bridge type ventilation hole of this kind of structural style, stamping forming adds man-hour more convenient, and overall structure is more pleasing to the eye simultaneously, is favorable to improving decorative effect, and utilize the both sides gap ventilation cooling in bridge type ventilation hole, also be favorable to avoiding the dust to get into in the cubical switchboard.

As shown in fig. 1, the height of the medium-sized heightening bracket 2 of the utility model is 80-100 mm, which can ensure the safety distance of the electrical clearance of the bus bar room to meet the specified requirements, ensure the safe operation of the switch cabinet and avoid the waste of raw material cost caused by too large manufacturing height; the cover plate body 1 comprises four bent edges 11 which are integrally bent and formed by adopting a cold-rolled steel plate with the thickness of 1.2mm, and the cold-rolled steel plate is a steel plate with a thinner thickness which is manufactured by further cold rolling a hot-rolled steel strip of common carbon structural steel and is generally rolled at normal temperature, so that no iron scale is generated, the surface quality is good, the finish degree is high, the product size precision of the cold-rolled steel is high, the mechanical property and the processing property of the product are good, and the integral bending and forming processing are facilitated, so the cover plate manufactured by adopting the cold-rolled steel plate has the advantages of simple process, low cost, more economical and economical production and processing, and meanwhile, in combination with a structure with the four edges provided with the right-angle bent edges, the 1.2mm cold-rolled steel plate can be used for replacing a 1.; the surface of apron body 1 can be equipped with the spraying plastics layer, generally bends at apron body 1 and takes shape the back, carries out the spraying plastics on its surface, handles through the spraying plastics and can improve apron body 1's corrosion resisting property, is difficult for rustting, can prolong the life of apron, and the outward appearance after the spraying plastics is more pleasing to the eye simultaneously, can provide more comfortable experience for the user, the cold-rolled steel sheet preparation shaping that also can be corresponding adoption 1.2mm of bed hedgehopping support 2 is thick.

As shown in fig. 1, the installation process of the present invention is: firstly, manufacturing a cover plate body, selecting a cold-rolled steel plate with the thickness of 1.2mm to perform plate shearing and blanking according to the unfolding size of the process requirement, and then bending and forming to process right-angled bent edges of four edges; then manufacturing a heightening bracket, and selecting a cold-rolled steel plate with the thickness of 1.2mm to perform plate shearing and blanking, bending and forming, punching vent holes and splicing and forming all around according to the size required by the process; then, the cover plate body is assembled on the heightening bracket, so that one side of the cover plate body in the length direction is hinged with the heightening bracket by a hinge, and the other side of the cover plate body is fastened and connected by plastic screws (generally nylon screws); then, the assembled cover plate body and the heightening bracket are subjected to outer surface plastic spraying treatment together to finish the integral processing and manufacturing of the pressure relief cover; finally, when the pressure relief cover is assembled with the switch cabinet, the pressure relief cover is placed on the top of the switch cabinet, the bottom of the heightening bracket is aligned with a pressure relief opening on the top of the switch cabinet, and the heightening bracket is fixedly connected with the top of the switch cabinet by utilizing a welding mode or a screw connection mode, so that the assembling of the switch cabinet is completed; when ordinary normal during operation, utilize the ventilation hole on the bed hedgehopping support side to ventilate and dispel the heat, maintain the normal operating of cubical switchboard, when taking place the high-pressure accident, produce high-temperature high-pressure gas in the cubical switchboard in the twinkling of an eye and impact the pressure relief lid upwards, can make the plastic screw fracture of apron body one side, open the apron body through the opposite side hinge rotation, treat that high-temperature high-pressure gas releases the completion back, usable plastic screw again with one side and the bed hedgehopping support fastening connection of apron body, drop into normal operating again after overhauing the electric elements in the cubical switchboard.

The above description is only the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can be within the technical scope of the present invention, and the technical solution and the concept of the present invention should be replaced or changed equivalently, and all should be included in the scope of the present invention.

Claims

1. A pressure relief cover structure of a high-voltage switch cabinet is characterized by comprising a rectangular cover plate body (1), wherein the periphery of the bottom surface of the cover plate body (1) is provided with a heightening support (2), one side of the cover plate body (1) in the length direction is hinged with the heightening support (2) through a hinge (3), and the other side of the cover plate body (1) in the length direction is fixedly connected with the heightening support (2) through a plastic screw (4); the four side surfaces of the heightening support (2) are respectively provided with a vent hole (21), and four sides of the cover plate body (1) are respectively provided with an upward right-angle bending edge (11).

2. The pressure relief cover structure of a high-voltage switch cabinet according to claim 1, wherein the vent holes (21) on each side of the heightening bracket (2) comprise two or three sets of vent holes, and each set of vent holes comprises ten bridge-shaped vent holes which are parallel to each other and are arranged at equal intervals.

3. The structure of the pressure relief cover of the high-voltage switch cabinet as claimed in claim 2, wherein the hole size of each bridge-type vent in each set of vents (21) comprises a length x a width of 20 x 5mm, and the height of the gap punched from both sides of the length direction of the bridge-type vent is 0.5 mm.

4. The pressure relief cover structure of the high-voltage switch cabinet according to claim 1, wherein the height of the heightening bracket (2) is 80-100 mm.

5. The pressure relief cover structure of the high-voltage switch cabinet according to claim 1, wherein the cover plate body (1) comprises four bent edges (11) which are integrally bent and formed by cold-rolled steel plates with the thickness of 1.2 mm.