Pressure relief explosion-proof structure
By designing a pressure relief and explosion-proof structure in a high-voltage switch cabinet, including the panel body, pressure relief plate and breathable groove, the problem of the internal heat and pressure of the high-voltage switch cabinet being difficult to discharge in the case of failure is solved, effective pressure relief and explosion-proof effects are achieved, and the safety and installation efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202421808533.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-20
- Estimated Expiration
- 2034-07-29
AI Technical Summary
The existing high-voltage switch cabinet lacks effective pressure relief devices, which leads to the difficulty of internal heat and pressure being discharged in time in the event of short circuit or failure, and there are safety hazards of explosion accidents.
A pressure relief and explosion-proof structure is designed, including a panel body, a pressure relief plate, a first breathable groove and a second breathable groove. The pressure relief plate is covered on the outside of the through hole and is fixed to the panel body by a fastening structure, and the first and second breathable grooves are used for heat release. In an emergency, the pressure relief plate can be opened and released to release external forces to protect internal components.
In non-emergency situations, the structure can effectively dissipate heat; in emergency situations, the opening of the pressure relief plate can release internal pressure, prevent explosion accidents, protect internal components, and quickly reinstall, improving installation efficiency and reducing the hassle of maintenance and replacement.
Smart Images
Figure CN222887982U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of high-voltage switch cabinets, in particular to a pressure relief and explosion-proof structure. Background Art
[0002] A high-voltage switch cabinet refers to an electrical product used for power generation, transmission, distribution, power conversion and consumption in a power system to play functions such as switching on and off, controlling or protecting. High-voltage switch cabinets are classified into several categories such as electrical products with operating voltage levels from 3.6 kV to 550 kV, high-voltage isolating switches and earthing switches, high-voltage load switches, high-voltage automatic reclosing and sectionalizers, high-voltage operating mechanisms, high-voltage explosion-proof distribution devices and high-voltage switch cabinets.
[0003] A high-voltage switch cabinet is an important device in the power transmission and distribution system and plays an important role in opening and closing power lines. Based on the electrical properties of the switch cabinet, a large amount of heat will be generated during its operation. Under normal working conditions, the heat can be discharged through the heat dissipation holes. However, once a short circuit or other faults occur, it is very easy to generate more heat and pressure in a short time, causing the temperature inside the switch cabinet to rise sharply and the internal air pressure to increase suddenly. At this time, relying solely on the heat dissipation holes cannot discharge the pressure and heat in time, and it is very easy to cause explosion accidents. There is no good pressure relief device in the existing high-voltage switch cabinets, which poses a great safety hazard. Summary of the Utility Model
[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a pressure relief and explosion-proof structure to achieve pressure relief and effectively reduce potential safety hazards.
[0005] A pressure relief and explosion-proof structure according to an embodiment of the utility model includes:
[0006] A panel body, on which at least one through hole is provided;
[0007] A pressure relief plate covering the outside of the through hole. The lower end of the pressure relief plate is fixedly installed on the panel body through a first fastening structure, and the upper end of the pressure relief plate is installed on the panel body through a second fastening structure, and the locking force of the second fastening structure is less than that of the first fastening structure;
[0008] A first ventilation groove is provided on the pressure relief plate.
[0009] According to some embodiments of the utility model, the panel body further includes a second ventilation groove.
[0010] According to some embodiments of the utility model, the first ventilation groove and the pressure relief plate are of an integral structure, the second ventilation groove and the panel body are of an integral structure, and the openings of the first ventilation groove and the second ventilation groove are both arranged upward.
[0011] According to some embodiments of the present utility model, a cutting line is provided at the lower end of the pressure relief plate, and the cutting line is close to and located above the first fastening structure.
[0012] According to some embodiments of the present utility model, the second fastening structure uses plastic screws.
[0013] According to some embodiments of the present utility model, the first fastening structure uses metal screws.
[0014] According to some embodiments of the present utility model, the pressure relief and explosion-proof structure further includes a filter screen, and the filter screen is arranged inside the panel body and is opposite to the position of the first ventilation groove or the second ventilation groove.
[0015] According to some embodiments of the present utility model, both the cutting line and the through hole are made by punching.
[0016] According to some embodiments of the present utility model, several of the first ventilation grooves and several of the second ventilation grooves are both arranged in a matrix.
[0017] Compared with the prior art, the present utility model has the following beneficial effects:
[0018] The pressure relief and explosion-proof structure provided by the present utility model, in non-emergency situations, the pressure relief plate is closely attached to the panel body, and when ordinary heat can be released through the first ventilation groove, when entering an emergency situation, when the pressure inside the box impacts the pressure relief and explosion-proof panel, the external force can be released through the opening of the pressure relief plate, thereby protecting the internal components from damage. After pressure relief, it can be quickly reinstalled to its original position, which is beneficial to the installation efficiency and avoids the trouble of later maintenance and replacement. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0020] Figure 1 is one of the structural schematic diagrams of the pressure relief and explosion-proof structure provided by the present utility model;
[0021] Figure 2 is another structural schematic diagram of the pressure relief and explosion-proof structure provided by the present utility model;
[0022] Figure 3 is the third structural schematic diagram of the pressure relief and explosion-proof structure provided by the present utility model (without a filter screen).
[0023] The reference numerals in the drawings are explained as follows:
[0024] Panel body 100, through hole 110; pressure relief plate 200, second ventilation groove 210, first fastening structure 220, second fastening structure 230; first ventilation groove 300; cutting line 400; filter screen 500. Detailed implementation mode
[0025] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present invention, and should not be construed as a limitation to the present invention.
[0026] In the description of the present invention, it should be understood that for the orientation description, such as up, down, front, back, left, right, etc., the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0027] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the present number, and above, below, within, etc. are understood as including the present number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or the sequence relationship of the indicated technical features.
[0028] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.
[0029] Specifically, please refer to Figures 1 - 3 , the pressure relief and explosion-proof structure specifically includes:
[0030] Panel body 100, pressure relief plate 200 and first ventilation groove 300. At least one through hole 110 is provided on the panel body 100;
[0031] The pressure relief plate 200 covers the outside of the through hole 110. The lower end of the pressure relief plate 200 is fixedly installed on the panel body 100 through the first fastening structure 220, and the upper end of the pressure relief plate 200 is installed on the panel body 100 through the second fastening structure 230, and the locking force of the second fastening structure 230 is less than the locking force of the first fastening structure 220; the first ventilation groove 300 is provided on the pressure relief plate 200.
[0032] The pressure relief and explosion-proof structure provided by the present utility model, in non-emergency situations, the pressure relief plate 200 is closely attached to the panel body 100. When ordinary heat can be released through the first ventilation slot 300, in case of an emergency, when the pressure inside the box impacts the pressure relief and explosion-proof panel, the external force can be released through the opening of the pressure relief plate 200, thereby protecting the internal components from damage. After pressure relief, it can be quickly reinstalled back to its original position, which is beneficial to the installation efficiency and avoids the trouble of later maintenance and replacement.
[0033] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings.
[0034] It should be noted that, without conflict, the embodiments in the present utility model and the features and technical solutions in the embodiments can be combined with each other.
[0035] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0036] Embodiment 1
[0037] Please refer to Figures 1 - 3 , a pressure relief and explosion-proof structure, which includes a panel body 100, a pressure relief plate 200 and a first ventilation slot 300. At least one through hole 110 is opened on the panel body 100; the pressure relief plate 200 covers the outside of the through hole 110. The lower end of the pressure relief plate 200 is fixedly installed on the panel body 100 through a first fastening structure 220, and the upper end of the pressure relief plate 200 is installed on the panel body 100 through a second fastening structure 230, and the locking force of the second fastening structure 230 is less than the locking force of the first fastening structure 220; the first ventilation slot 300 is opened on the pressure relief plate 200.
[0038] Through the above structural design, in non-emergency situations, the pressure relief plate 200 is closely attached to the panel body 100. When ordinary heat can be released through the first ventilation slot 300 and the second ventilation slot 210, in case of an emergency, when the pressure inside the box impacts the pressure relief and explosion-proof panel, the external force can be released through the opening of the pressure relief plate 200, thereby protecting the internal components from damage. After pressure relief, it can be quickly reinstalled back to its original position, which is beneficial to the installation efficiency and avoids the trouble of later maintenance and replacement.
[0039] Specifically, the panel body 100 further includes a second ventilation slot 210.
[0040] Through the above structural design, the first ventilation groove 300 and the second ventilation groove 210 have the same shape and size and the same function, both of which are used for heat dissipation. The difference is that the first ventilation groove 300 is provided on the pressure relief plate 200 and can be disassembled following the disassembly of the pressure relief plate 200, while the second ventilation groove 210 is fixed on the panel body 100.
[0041] Specifically, the pressure relief and explosion-proof structure further includes a filter screen 500. The filter screen 500 is arranged inside the panel body 100 and is opposite to the first ventilation groove 300 or the second ventilation groove 210 in position.
[0042] Through the above structural design, the filter screen 500 is used to prevent mosquitoes from entering the interior of the box body. It is arranged at the position on the back of the pressure relief plate 200 corresponding to the second ventilation groove 210, and is also arranged at the position on the back of the panel body 100 corresponding to the first ventilation groove 300.
[0043] Specifically, a cutting line 400 is provided at the lower end of the pressure relief plate 200. The cutting line 400 is close to and above the first fastening structure 220.
[0044] Through the above structural design, in order to prevent excessive internal pressure from causing the pressure relief plate 200 to be overly bent and broken during pressure relief, the cutting line 400 is beneficial for the pressure relief plate 200 to break under excessive pressure, which is beneficial for replacement.
[0045] Specifically, both the cutting line 400 and the through hole 110 are made by punching.
[0046] Through the above structural design, during the punching process, except for the metal near the shearing contour line, the sheet metal itself does not undergo plastic deformation. Therefore, the parts processed by flat blanking are still in a planar shape. On the premise of ensuring the flatness of the pressure relief plate 200, the cutting line 400 is made by punching.
[0047] Specifically, the second fastening structure 230 uses plastic screws; the first fastening structure 220 uses metal screws.
[0048] Through the above structural design, by having different tightness degrees for fixing the upper and lower ends of the pressure relief plate 200, it is beneficial for the pressure relief plate 200 to open outward for pressure relief after being subjected to internal pressure, and it can be quickly reinstalled to its original position after pressure relief, which is beneficial for the installation efficiency.
[0049] Embodiment 2
[0050] The pressure relief and explosion-proof structure provided in Embodiment 1 is further optimized. Specifically, as Figures 1 - 3 shown, the first ventilation groove 300 and the pressure relief plate 200 are of an integral structure, the second ventilation groove 210 and the panel body 100 are of an integral structure, and the openings of both the first ventilation groove 300 and the second ventilation groove 210 are arranged upward.
[0051] Through the above structural design, the first ventilation groove 300 and the second ventilation groove 210 are conducive to the dissipation of internal heat, and the upward-facing groove openings are conducive to the upward volatilization of heat.
[0052] Embodiment 3
[0053] The pressure relief and explosion-proof structure provided in Embodiment 1 or 2 is further optimized, such as Figures 1 - 3 As shown, a plurality of first ventilation grooves 300 and a plurality of second ventilation grooves 210 are both arranged in a matrix.
[0054] Through the above structural design, the matrix arrangement of the first ventilation groove 300 and the second ventilation groove 210 is conducive to uniform heat dissipation.
[0055] The use process of the pressure relief and explosion-proof structure provided by the present utility model is as follows:
[0056] In non-emergency situations, the pressure relief plate 200 is closely attached to the panel body 100. When ordinary heat can be released through the first ventilation groove 300 and the second ventilation groove 210, the filter screen 500 can prevent flying insects from entering the box. In an emergency situation, when the box body is impacted by an external force, the pressure relief and explosion-proof panel enables the external force to be released through the opening of the pressure relief plate 200, thereby protecting the internal components from damage. After pressure relief, it can be quickly reinstalled to its original position, which is conducive to the installation efficiency and avoids the trouble of later maintenance and replacement.
[0057] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.
[0058] Although the embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present utility model. The scope of the present utility model is defined by the claims and their equivalents.
Claims
1. A pressure relief explosion-proof structure, characterized in that: include: A panel body (100), wherein at least one through hole (110) is provided on the panel body (100); a pressure relief plate (200), the pressure relief plate (200) covering the outer side of the through hole (110), the lower end of the pressure relief plate (200) being fixedly mounted on the panel body (100) via a first fastening structure (220), the upper end of the pressure relief plate (200) being mounted on the panel body (100) via a second fastening structure (230), and the locking force of the second fastening structure (230) being smaller than the locking force of the first fastening structure (220); The first venting groove (300) is provided on the pressure relief plate (200).
2. The pressure relief explosion-proof structure according to claim 1, characterized in that: The panel body (100) further comprises a second ventilation groove (210).
3. The pressure relief and explosion-proof structure according to claim 2, characterized in that: The first vent groove (300) and the pressure relief plate (200) are an integral structure, the second vent groove (210) and the panel body (100) are an integral structure, and the notches of the first vent groove (300) and the second vent groove (210) are both arranged upwards.
4. The pressure relief explosion-proof structure according to any one of claims 1 to 3, characterized in that: A tangent line (400) is provided at the lower end of the pressure relief plate (200), and the tangent line (400) is close to and located above the first fastening structure (220).
5. The pressure relief explosion-proof structure according to claim 4, characterized in that: The second fastening structure (230) uses a plastic screw.
6. The pressure relief and explosion-proof structure according to claim 5, characterized in that: The first fastening structure (220) uses a metal screw.
7. The pressure relief explosion-proof structure according to claim 1 or 2, characterized in that: The pressure relief explosion-proof structure further comprises a filter screen (500), wherein the filter screen (500) is arranged on the inner side of the panel body (100) and is located opposite to the first ventilation groove (300) or the second ventilation groove (210).
8. The pressure relief and explosion-proof structure according to claim 4, characterized in that: The cutting line (400) and the through hole (110) are both produced by punching.
9. The pressure relief explosion-proof structure according to claim 2, characterized in that: A plurality of the first ventilation grooves (300) and a plurality of the second ventilation grooves (210) are arranged in a matrix.