CN110994394A - Cubical switchboard pressure relief device and cubical switchboard - Google Patents
Cubical switchboard pressure relief device and cubical switchboard Download PDFInfo
- Publication number
- CN110994394A CN110994394A CN201911398672.1A CN201911398672A CN110994394A CN 110994394 A CN110994394 A CN 110994394A CN 201911398672 A CN201911398672 A CN 201911398672A CN 110994394 A CN110994394 A CN 110994394A
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- pressure relief
- explosion
- plate
- proof
- plates
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/30—Cabinet-type casings; Parts thereof or accessories therefor
- H02B1/306—Accessories, e.g. windows
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention relates to a switch cabinet pressure relief device and a switch cabinet, which comprise a pressure relief bottom plate provided with a plurality of openings, wherein two side parts of the upper surface of the pressure relief bottom plate are detachably connected with pressure relief side plates, an explosion-proof plate assembly is detachably fixed on the upper surface of the pressure relief bottom plate, the explosion-proof plate assembly comprises a plurality of layers of explosion-proof plates, the distance between two adjacent explosion-proof plates at the lower layer is larger than the distance between two adjacent explosion-proof plates at the upper layer, a mesh plate assembly is arranged above the explosion-proof plate assembly, two ends of the mesh plate assembly are detachably fixed on a bracket, the bracket is fixedly connected with the pressure relief side plates, the mesh plate assembly comprises a plurality of mesh plates, the adjacent mesh plates are detachably and fixedly connected, the top of the pressure relief side plate at one side is rotatably connected with a pressure relief window, one end of the pressure relief window is rotatably connected, the pressure relief device can reduce pressure and shunt gas and prevent large objects from being sprayed out.
Description
Technical Field
The invention relates to the technical field of accessory facilities of a switch cabinet, in particular to a switch cabinet pressure relief device and a switch cabinet.
Background
Along with stricter requirements on the switch cabinet and more careful consideration on safety, the pressure relief device plays a vital role in the safety performance of the switch cabinet, and the personal and property safety is well ensured. The original pressure relief device pressure release board of cubical switchboard is accomplished by cold-rolled steel sheet and otter board spot welding after galvanization, cooperatees with the flue and builds pressure relief device jointly, and the inventor finds that current pressure relief device installation procedure is complicated, and the on-the-spot installation degree of difficulty increases, and the later maintenance cycle is long, the cost increase. When arcing occurs in the switch cabinet body, large objects can be ejected, and personal and property safety is directly affected.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides the switch cabinet pressure relief device which is convenient to install and disassemble, can well prevent splashes from leaking, and ensures the safety of operators in front of a cabinet.
In order to achieve the purpose, the invention adopts the following technical scheme:
a switch cabinet pressure relief device comprises a pressure relief bottom plate with a plurality of openings, wherein pressure relief side plates are detachably connected to two side portions of the upper surface of the pressure relief bottom plate, an explosion-proof plate assembly is detachably fixed to the upper surface of the pressure relief bottom plate and covers the openings, the explosion-proof plate assembly comprises a plurality of layers of explosion-proof plates, the number of each layer of explosion-proof plate is multiple, the distance between two adjacent explosion-proof plates at the lower layer is larger than the distance between two adjacent explosion-proof plates at the upper layer, a mesh plate assembly is arranged above the explosion-proof plate assembly, two ends of the mesh plate assembly are detachably fixed on a support, the support is fixedly connected with the two pressure relief side plates, the mesh plate assembly comprises a plurality of mesh plates, two adjacent mesh plates are detachably and fixedly connected, the top of the side plate at one side is rotatably connected with a pressure relief window, one end of the pressure relief window is rotatably connected with the pressure relief side plate at one, the other end can be detachably and fixedly connected with the top end of the pressure relief side plate at the other side.
Furthermore, be provided with a plurality of first through-holes on the pressure release curb plate for gaseous outflow, be fixed with the water conservancy diversion spare of U type on the pressure release curb plate lateral surface of first through-hole department for the gaseous leading-in upper and lower direction that will flow through first through-hole outflow flows, prevents to the influence of operating personnel before the cabinet.
Further, the explosion-proof plate comprises a first explosion-proof plate part provided with a plurality of second through holes, a second explosion-proof plate part and a third explosion-proof plate part which are respectively provided with a third through hole and a fourth through hole are vertically fixed at two ends of the first explosion-proof plate part in an integrated mode, the bottom of the second explosion-proof plate part is integrally connected with a connecting part perpendicular to the second explosion-proof plate part, and the connecting part is used for being detachably connected with the explosion-proof plate or the pressure relief bottom plate of the lower layer.
Further, every layer of explosion-proof plate assembly sets up two explosion-proof boards, and in the adjacent two-layer explosion-proof board, the connection portion of upper explosion-proof board can be dismantled with the first explosion-proof board portion of lower floor's explosion-proof board and be connected, and the connection portion and the pressure release bottom plate of the explosion-proof board of bottom can be dismantled and be connected, and the third explosion-proof board portion in close contact with of two explosion-proof boards of top to can dismantle the connection.
Further, the mesh plate is provided with a plurality of fifth through holes, the two sides of the mesh plate are integrally connected with the fixing part, and the fixing parts of adjacent mesh plates are detachably connected with the connecting plate, so that the fixed connection of the two adjacent mesh plates is realized.
Furthermore, a plurality of windows are opened to the pressure release window, and the lower surface detachable of pressure release window is connected with the metal mesh, the metal mesh covers the window setting.
Further, the pressure relief window is rotatably connected with the pressure relief side plate through a hinged seat.
The invention also discloses a switch cabinet, wherein the switch cabinet pressure relief device is arranged on a top cover plate of the switch cabinet, and the pressure relief window is rotatably connected with a pressure relief side plate close to one side of an operator in front of the switch cabinet.
The invention has the beneficial effects that:
1. according to the switch cabinet pressure relief device, the distance between two adjacent explosion-proof plates of the explosion-proof plate assembly at the lower layer is larger than the distance between two adjacent explosion-proof plates at the upper layer, so that not only can the ejection of a large object be prevented, but also the flow distribution and heat dissipation of gas can be realized, the pressure of the gas can be reduced by the mesh plate assembly, and the ejection of the object can be prevented.
2. According to the switch cabinet pressure relief device, the first through hole is formed in the pressure relief side plate, the U-shaped flow guide piece is arranged at the first through hole, the pressure relief side plate also plays a certain pressure relief effect, and meanwhile, gas flowing out through the first through hole can be guided to flow up and down, so that impact injury to operators in front of the switch cabinet is avoided, and safety of the operators is guaranteed.
3. According to the switch cabinet pressure relief device, the explosion-proof plate assembly is formed by detachably connecting a plurality of explosion-proof plates, the mesh plate assembly is formed by detachably connecting a plurality of mesh plates, the pressure relief bottom plate is detachably connected with the pressure relief side plate, the switch cabinet pressure relief device is convenient to mount and dismount and small in size, when the explosion-proof plate assembly and the mesh plate assembly are damaged, only the explosion-proof plate and the mesh plate at the damaged part need to be replaced, the whole switch cabinet pressure relief device is not required to be replaced, and the maintenance cost is low.
4. According to the switch cabinet, the pressure relief window of the pressure relief device is rotatably connected with the pressure relief side plate close to one side of an operator in front of the cabinet, and the pressure relief window is opened towards the rear direction of the cabinet when being opened by impact, so that the influence on the operator in front of the cabinet is avoided, and the personal safety of the operator is more powerfully guaranteed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;
FIG. 2 is a front view of the whole structure of the pressure release window in the embodiment 1 of the present invention;
FIG. 3 is a front view of the entire structure of the pressure release window according to embodiment 1 of the present invention when the pressure release window is opened;
FIG. 4 is an enlarged view taken at A of FIG. 1 in accordance with the present invention;
FIG. 5 is a schematic diagram of an explosion-proof panel according to embodiment 1 of the present invention;
FIG. 6 is a schematic diagram of a mesh plate structure according to embodiment 1 of the present invention;
FIG. 7 is a schematic view of a pressure relief window according to embodiment 1 of the present invention;
FIG. 8 is a schematic view of the overall structure of embodiment 2 of the present invention;
FIG. 9 is an enlarged view taken at B of FIG. 8 in accordance with the present invention;
the explosion-proof switch cabinet comprises a pressure release bottom plate 1, a pressure release side plate 2, a first through hole 2-1, a flow guide piece 3, a first flow guide part 3-1, a first flow guide part 3-2, a second flow guide part 4-2, an explosion-proof plate 4-1, a first explosion-proof plate part 4-2, a second explosion-proof plate part 4-3, a third explosion-proof plate part 4-4, a second through hole 4-5, a third through hole 4-6, a fourth through hole 4-7, a connecting part 5, a mesh plate 5-1, a first mesh plate part 5-2, a second mesh plate part 5-3, a fifth through hole 6, a connecting plate 7, a pressing plate 8, angle steel 9, a reinforcing plate 10, a seat 11, a pressure release window 11-1, a window 12, a plastic bolt and 13.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
For convenience of description, the words "up" and "down" in the present application, if any, are used merely to indicate correspondence with the directions of the upper and lower portions of the drawings, and are not intended to limit the structure, but merely to facilitate the description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or components so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.
Just as the introduction of background art, the current cubical switchboard pressure relief device has the problem with high costs, bulky, the on-the-spot installation degree of difficulty is big, and has the possibility of spouting big article, to the above-mentioned problem, this application provides a cubical switchboard pressure relief device.
In example 1 of an exemplary embodiment of the present application, as shown in fig. 1 to 7, a pressure relief device for a switch cabinet includes a pressure relief bottom plate 1, a pressure relief side plate 2, an explosion-proof plate assembly, a mesh plate assembly, and a pressure relief window.
The pressure relief bottom plate can be detachably connected with a top cover plate of the switch cabinet, and two rectangular openings are formed in the pressure relief bottom plate.
The two sides of the upper surface of the pressure relief bottom plate are detachably connected with pressure relief side plates, the bottom of each pressure relief side plate is provided with a 90-degree bending plate, the 90-degree bending plate is detachably connected with the pressure relief bottom plate through a plurality of bolts, so that the detachable connection of the pressure relief side plates and the pressure relief bottom plate is realized, a plurality of rectangular first through holes 2-1 are arranged on the pressure relief side plate, a flow guide part 3 is fixed on the outer side surface of the pressure relief side plate at the first through holes, the flow guide piece is of a U-shaped structure and comprises a first flow guide part 3-1 and a second flow guide part 3-2 integrally fixed on the first flow guide part, the second flow guide part is fixed at the position of the outer side surface of the pressure relief side plate at the two sides of the second through hole, through the water conservancy diversion spare, can turn into the gas that flows vertically with the horizontal flow that flows by first through-hole, avoid the gaseous impact injury to operating personnel before the cabinet.
The explosion-proof plate assembly is arranged between the two pressure relief side plates and above the opening, and is used for shunting and radiating gas flowing out through the opening and preventing large objects from being sprayed out.
The explosion-proof plate assembly comprises three layers of explosion-proof plates 4, each layer is provided with two explosion-proof plates, and the multiple layers of explosion-proof plates are distributed in a tower shape, namely, in the two adjacent layers of explosion-proof plates, the distance between the two explosion-proof plates on the lower layer is greater than the distance between the two explosion-proof plates on the upper layer.
The explosion-proof plate comprises a first explosion-proof plate portion 4-1, a second explosion-proof plate portion 4-2 and a third explosion-proof plate portion 4-3, wherein the second explosion-proof plate portion and the third explosion-proof plate portion are vertically connected to the first explosion-proof plate portion in an integrated mode, a plurality of rectangular second through holes 4-4 are formed in the first explosion-proof plate portion, a plurality of rectangular third through holes 4-5 are formed in the second explosion-proof plate portion, the axes of the second through holes and the third through holes are vertically arranged, and a plurality of square fourth through holes 4-6 are formed in the third explosion-proof plate portion.
And the bottom of the second explosion-proof plate part is integrally connected with a connecting part 4-7 vertical to the second explosion-proof plate part.
The connecting portion of two explosion-proof boards of bottom pass through the bolt and can dismantle with the pressure release bottom plate and be connected, and fixed connection can be dismantled through bolt and the first explosion-proof board portion of the explosion-proof board of bottom through the connecting portion of two explosion-proof boards in intermediate level, and the connecting portion of two explosion-proof boards of top and the first explosion-proof board portion of the explosion-proof board in intermediate level pass through the bolt and can dismantle the connection, and the third explosion-proof board portion of two explosion-proof boards of top closely laminates to utilize the bolt can dismantle the connection.
The mesh plate assembly is formed by splicing three mesh plates 5 and is used for reducing pressure of gas and preventing large objects from being sprayed out, the mesh plate comprises a first mesh plate part 5-1 and a second mesh plate part 5-2 which are integrally connected to the two sides of the first mesh plate part, a plurality of fifth through holes 5-3 are formed in the first mesh plate part and the second mesh plate part, the fifth through holes are round holes with the diameters of 3mm, the second mesh plate part and the first mesh plate part are arranged in an obtuse angle mode, the contact area of the gas and the mesh plate is increased, the pressure reduction effect is good, and the second mesh plate part is integrally connected with a fixing part 5-4.
The fixed part that is located the both sides of middle mesh plate passes through the bolt with connecting plate 6 that the cross-section is the U type can dismantle with the cross-section and be connected, and the fixed part that is close to middle mesh plate that is located the mesh plate of both sides passes through the bolt and can dismantle with the connecting plate and be connected, and then realizes dismantling fixed connection of middle mesh plate and the mesh plate of both sides.
The fixed part of the mesh plate on two sides, which is close to one side of the pressure relief side plate, is fixedly connected with the bracket fixed on the pressure relief side plate through a bolt, and the bolt compresses the fixed part of the mesh plate on the bracket through a pressing plate 7.
The both ends of pressure release curb plate all set up the support, and the support supports fixedly to the both ends of mesh plate assembly, support both ends welded fastening is on the medial surface of two pressure release curb plates, the support includes both ends and pressure release curb plate welded fastening's angle steel 8, angle steel and 9 welded fastening of reinforcing plate, reinforcing plate and pressure release curb plate welded fastening, the reinforcing plate is used for strengthening the joint strength of angle steel and pressure release curb plate.
The one end rotation that pressure release curb plate lateral surface top position of one side was connected with pressure release window 11 through three articulated seat 10, and fixed connection can be dismantled through 90 boards of bending that plastic bolt 12 set up on the top of another pressure release curb plate to the other end of pressure release window, be provided with the window 11-1 of a plurality of rectangles on the pressure release window, the medial surface of pressure release window has the metal mesh, and is preferred through the bolt fastening, the metal mesh adopts the wire net, protection level IP4X for dispel the heat, the pressure release to gas.
Adopt the cubical switchboard pressure relief device of this embodiment, when the inside arcing that takes place of cubical switchboard, produce the pressure of high strength, high temperature and damaged spare part, high pressure, high temperature and damaged spare part upwards gush this moment. The anti-explosion plate assembly is contacted with the anti-explosion plate assembly in the upward gushing process, high-pressure gas is shunted by the anti-explosion plate assembly, and the gas pressure is gradually reduced while a part of splashes are blocked. After the first pressure reduction, the broken parts and gas which continue to gush contact the mesh plate assembly, the mesh plate is provided with dense round holes with the diameter of 3mm, the gushing of splashed objects is effectively blocked, and finally when the pressure is small, the pressure can be relieved through the top pressure relief window; when the pressure is still too high, the plastic bolt is opened, so that the inner spaces of the two pressure relief side plates are directly communicated with the outside.
Adopt the pressure relief device of this embodiment, through the double-deck effect of blocking of explosion-proof board assembly and mesh board assembly, fully blocked the leakage of splash, shunt pressure effectively and reduce gradually, the pressure release window can in time be opened again, pressure, smog in time discharge, the security of guarantee property.
The pressure relief device of this embodiment, explosion-proof board assembly can be dismantled by a plurality of explosion-proof boards and connect and constitute, and the mesh board assembly can be dismantled by a plurality of mesh boards and constitute, and the connection can be dismantled to pressure release bottom plate and pressure release curb plate, and the installation, dismantle conveniently, and is small, and when explosion-proof board assembly and mesh board assembly appear damaging, only need to change the explosion-proof board and the mesh board at damage position can, need not whole change, the maintenance cost is low.
Example 2:
this embodiment discloses a cubical switchboard, as shown in fig. 8-9, install three cubical switchboard pressure relief device of embodiment 1 on the lamina tecti of cubical switchboard 13, cubical switchboard pressure relief device passes through bolt and pressure release bottom plate fixed connection, and rotates the pressure release curb plate of being connected with the pressure release window and set up in the one side that is close to before the cabinet operating personnel, and the pressure release window is opened to the cabinet rear direction, does not have the influence to the operating personnel before the cabinet.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A switch cabinet pressure relief device is characterized by comprising a pressure relief bottom plate with a plurality of openings, wherein pressure relief side plates are detachably connected to two sides of the upper surface of the pressure relief bottom plate, an explosion-proof plate assembly is detachably fixed to the upper surface of the pressure relief bottom plate and covers the openings, the explosion-proof plate assembly comprises a plurality of layers of explosion-proof plates, the number of each layer of explosion-proof plate is multiple, the distance between two adjacent explosion-proof plates at the lower layer is larger than the distance between two adjacent explosion-proof plates at the upper layer, a mesh plate assembly is arranged above the explosion-proof plate assembly, two ends of the mesh plate assembly are detachably fixed on a support, the support is fixedly connected with the two pressure relief side plates, the mesh plate assembly comprises a plurality of mesh plates, two adjacent mesh plates are detachably and fixedly connected, the top of the pressure relief side plate at one side is rotatably connected with a pressure relief window, one end of the pressure relief window is rotatably connected with the pressure relief side plate on one side, and the other end of the pressure relief window can be detachably and fixedly connected with the top end of the pressure relief side plate on the other side.
2. The switch cabinet pressure relief device according to claim 1, wherein the pressure relief side plate has a plurality of first through holes for air to flow out, and a U-shaped flow guide member is fixed on an outer side surface of the pressure relief side plate at the first through holes for guiding the air flowing out through the first through holes to flow in an up-and-down direction.
3. The pressure relief device of switch cabinet according to claim 1, wherein the explosion-proof plate comprises a first explosion-proof plate portion with a plurality of second through holes, the second explosion-proof plate portion and a third explosion-proof plate portion with a third through hole and a fourth through hole are vertically fixed at two ends of the first explosion-proof plate portion in an integrated manner, a connecting portion perpendicular to the second explosion-proof plate portion is integrally connected to the bottom of the second explosion-proof plate portion, and the connecting portion is detachably connected to the lower explosion-proof plate or the pressure relief bottom plate.
4. The pressure relief device of switch cabinet according to claim 3, wherein two explosion-proof plates are disposed on each layer of the explosion-proof plate assembly, and in two adjacent layers of explosion-proof plates, the connecting portion of the upper explosion-proof plate is detachably connected with the first explosion-proof plate portion of the lower explosion-proof plate, the connecting portion of the bottom explosion-proof plate is detachably connected with the pressure relief bottom plate, and the third explosion-proof plate portions of the two top explosion-proof plates are in close contact and detachably connected.
5. The pressure relief device of a switch cabinet according to claim 1, wherein the mesh plate is provided with a plurality of fifth through holes, two sides of the mesh plate are integrally connected with fixing portions, and the fixing portions of adjacent mesh plates are detachably connected with the connecting plate, so that the fixed connection of two adjacent mesh plates is realized.
6. The switch cabinet pressure relief device of claim 1, wherein the pressure relief window has a plurality of windows, the lower surface of the pressure relief window is detachably connected with a metal mesh, and the metal mesh covers the windows.
7. The switchgear cabinet pressure relief device of claim 1, wherein the pressure relief window is pivotally connected to the pressure relief side plate by a hinge mount.
8. A switchgear cabinet, characterized in that a top cover plate is provided with a switchgear cabinet pressure relief device according to any of claims 1-7, and the pressure relief window is rotatably connected with a pressure relief side plate for the side close to the front operator of the cabinet.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398672.1A CN110994394A (en) | 2019-12-30 | 2019-12-30 | Cubical switchboard pressure relief device and cubical switchboard |
| PCT/CN2020/127193 WO2021135646A1 (en) | 2019-12-30 | 2020-11-06 | Switch cabinet pressure relief device and switch cabinet |
| ZA2021/04759A ZA202104759B (en) | 2019-12-30 | 2021-07-07 | Switch cabinet pressure relief device and switch cabinet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911398672.1A CN110994394A (en) | 2019-12-30 | 2019-12-30 | Cubical switchboard pressure relief device and cubical switchboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110994394A true CN110994394A (en) | 2020-04-10 |
Family
ID=70079078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911398672.1A Pending CN110994394A (en) | 2019-12-30 | 2019-12-30 | Cubical switchboard pressure relief device and cubical switchboard |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN110994394A (en) |
| WO (1) | WO2021135646A1 (en) |
| ZA (1) | ZA202104759B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135646A1 (en) * | 2019-12-30 | 2021-07-08 | 青岛益和电气集团股份有限公司 | Switch cabinet pressure relief device and switch cabinet |
| CN113300264A (en) * | 2021-04-27 | 2021-08-24 | 湖北省电力装备有限公司 | Cable rear-connected type inflating cabinet |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117254375B (en) * | 2023-11-08 | 2024-04-26 | 重庆大顺电器设备有限公司 | Environment-friendly gas-insulated high-voltage board |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE439403B (en) * | 1983-10-13 | 1985-06-10 | Asea Ab | STELLVERKSSKAP |
| CN107732745B (en) * | 2017-11-01 | 2024-05-24 | 万控智造股份有限公司 | Armored switch cabinet meeting arcing and temperature rise requirements |
| CN107910790B (en) * | 2017-12-20 | 2023-12-29 | 万控智造股份有限公司 | Shunt pressure relief device |
| CN109638664B (en) * | 2018-12-19 | 2021-10-22 | 河南平高通用电气有限公司 | Cubical switchboard pressure relief device and cubical switchboard |
| CN110994394A (en) * | 2019-12-30 | 2020-04-10 | 青岛益和电气集团股份有限公司 | Cubical switchboard pressure relief device and cubical switchboard |
| CN210957357U (en) * | 2019-12-30 | 2020-07-07 | 青岛益和电气集团股份有限公司 | Cubical switchboard pressure relief device and cubical switchboard |
-
2019
- 2019-12-30 CN CN201911398672.1A patent/CN110994394A/en active Pending
-
2020
- 2020-11-06 WO PCT/CN2020/127193 patent/WO2021135646A1/en active Application Filing
-
2021
- 2021-07-07 ZA ZA2021/04759A patent/ZA202104759B/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021135646A1 (en) * | 2019-12-30 | 2021-07-08 | 青岛益和电气集团股份有限公司 | Switch cabinet pressure relief device and switch cabinet |
| CN113300264A (en) * | 2021-04-27 | 2021-08-24 | 湖北省电力装备有限公司 | Cable rear-connected type inflating cabinet |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021135646A1 (en) | 2021-07-08 |
| ZA202104759B (en) | 2021-09-29 |
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