Pressure relief machine body for centrally installed switchgear
By designing a pressure relief ceiling structure and air circulation system in the center cabinet, the explosion risk caused by high-temperature and high-pressure gas is solved, and the rapid pressure relief and heat dissipation effect is achieved, improving the safety and reliability of the equipment.
Patent Information
- Application Number
- CN202420759482.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-04-12
AI Technical Summary
Existing mid-mounted cabinets are prone to high-temperature and high-pressure gases in short circuit failures, wire aging or human operation errors, resulting in explosions and other accidents.
A pressure relief machine for a mid-mounted cabinet is designed, adopting a pressure relief top cover structure, with two pressure relief methods: several pressure relief channels are formed through the pressure relief valve assembly under normal pressure, and through the plug column is removed from the through hole under high pressure Achieve rapid pressure relief and avoid hot air retention through the circulating air design of the intake and exhaust fans.
It effectively improves the safety of the mid-mounted cabinet, ensures rapid pressure relief under high pressure conditions, reduces the risk of accidents, and reduces the possibility of component overheating through air circulation, and extends the normal operating life of the equipment.
Smart Images
Figure CN222146910U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of center cabinets, in particular to a pressure relief body for a center cabinet. Background Art
[0002] Central cabinet, full name is metal armored central removable switchgear. It is a high-voltage power distribution device with a maximum working voltage of 3.6 / 7.2 / 12kV. It is an indoor complete power distribution device for three-phase AC 50Hz single busbar segmentation system or double busbar segmentation system. It is used to receive and distribute 3.6-12kV network power, and control, protect, monitor and measure the power circuit; but the existing central cabinet still has the following disadvantages in operation;
[0003] If there is a short circuit fault, aging of wires, human operating errors, etc. inside the center cabinet, high-temperature and high-pressure gas will be generated instantly, which may easily cause accidents such as explosions. For this reason, a pressure relief body for the center cabinet is provided. Utility Model Content
[0004] The utility model aims to provide a pressure relief body for a central cabinet, which has two pressure relief modes under different pressures through a pressure relief top cover structure, thereby effectively improving its safety.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure relief body for a central cabinet, comprising: a frame, and side panels arranged on both sides of the frame; a base is arranged at the bottom of the two side panels for raising the bottom of the frame; and also comprises a pressure relief top cover structure arranged at the top of the frame; the pressure relief top cover structure comprises a top plate, a plurality of mounting grooves are arranged on the top plate, and a pressure relief plate assembly is arranged on each mounting groove; each group of pressure relief plate assemblies comprises a pressure relief plate, a second hinge is arranged on one side of the pressure relief plate, a first return torsion spring is arranged between the second hinge and the pressure relief plate, and both ends of the second hinge are assembled on the mounting grooves at corresponding positions, a plurality of extensions are arranged on the other side of the second hinge, each of the extensions is assembled with a plug column, and the plug column is inserted into the through hole on the top plate; and a plurality of pressure relief valve assemblies which can be flipped open are arranged on each pressure relief plate.
[0006] Preferably, a damping sleeve is provided on the outer wall of the plug column.
[0007] Preferably, each of the pressure relief valve assemblies comprises a channel port, and a first hinge arranged on the channel port, wherein the first hinge is provided with a deflectable pressure relief cover via a second return torsion spring.
[0008] Preferably, the torsion force of the first return torsion spring is greater than the torsion force of the second return torsion spring.
[0009] Preferably, a main power module and several sections of wires are also provided on the top of the top plate, and also includes a conductive block arranged on the lower surface of the pressure relief plate and close to the main power module, which is used for the wires to form a closed circuit when several of the pressure relief plates are closed.
[0010] Preferably, an exhaust fan is arranged at the bottom of the frame, and relatively distributed intake fans are arranged on the upper parts of the two side panels. The two intake fans and the exhaust fan work together to allow external air flow to enter from the upper part of the intake fan and flow downward along the frame until it is discharged by the exhaust fan.
[0011] Preferably, the base is provided with a plurality of door openings for supporting the frame so that it is lifted a certain distance.
[0012] Preferably, a heat conducting plate is provided on the inner wall of the side plate below the air intake fan, and a heat dissipation plate is provided on the outer wall of the side plate, and a plurality of heat dissipation fins are provided on the heat dissipation plate.
[0013] Preferably, the side panels and side walls are provided with grid heat dissipation grooves, and a door body and a top plate are arranged on the rear side of the frame.
[0014] Preferably, the top plate and the top of the frame are assembled with bolts, and the bolts are distributed in a rectangular shape.
[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0016] 1. The utility model adopts a pressure relief top cover structure. When the air pressure is of normal strength, a plurality of pressure relief valve assemblies that can be flipped on the pressure relief plate are adaptively opened to form a plurality of pressure relief channels for pressure relief. When the air pressure is too strong, the pressure relief plate overcomes the torsion of the first reset torsion spring and causes the plug column where the extension portion is located to be separated from the through hole on the top plate to complete its own flipping, thereby completely opening the rectangular channel where the installation groove is located to perform a rapid pressure relief process.
[0017] 2. Through the combined effect of the two upper air intake fans and the bottom exhaust fan, the top-in and bottom-out design can effectively circulate air, avoid hot air from being trapped inside the center cabinet, reduce the risk of overheating of components and equipment, and ensure the normal operation and life of electrical equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the structure of the utility model;
[0019] Figure 2 for Figure 1 Schematic diagram of the structure;
[0020] Figure 3 for Figure 1 Structural diagram;
[0021] Figure 4 For along Figure 3 A sectional stereogram cut along the midline AA;
[0022] Figure 5 It is a top view of the pressure relief cabinet of the utility model;
[0023] Figure 6 It is a structural schematic diagram of the top of the pressure relief cabinet of the utility model.
[0024] In the figure: 111, frame; 112, door; 113, top plate; 114, bolts; 211, side plate; 212, grid heat sink; 213, heat sink; 214, base; 215, intake fan; 311, main power module; 312, wire; 313, conductive block; 411, pressure relief plate; 412, pressure relief cover; 413, first hinge; 414, channel port; 415, extension; 416, plug column; 417, second hinge; 511, exhaust fan; 611, heat conduction plate. DETAILED DESCRIPTION
[0025] In the description of the present utility model, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present utility model. The following is a detailed description of various embodiments of the present utility model in conjunction with the drawings.
[0026] Example 1
[0027] See also Figures 1 to 6 The utility model preferably provides a technical solution: a pressure relief body for a central cabinet, comprising: a frame 111, and side panels 211 arranged on both sides of the frame 111; the bottoms of the two side panels 211 are each provided with a base 214 for raising the bottom of the frame 111; and also includes a pressure relief cover structure arranged on the top of the frame 111; the pressure relief cover structure includes a top plate 113, and a plurality of mounting grooves are arranged on the top plate 113, and each mounting groove is provided with a pressure relief plate assembly; each group of pressure relief plate assemblies includes a pressure relief plate assembly; The pressure plate 411, a second hinge 417 is provided on one side of the pressure relief plate 411, a first return torsion spring is provided between the second hinge 417 and the pressure relief plate 411, and both ends of the second hinge 417 are assembled on the mounting grooves at corresponding positions, a plurality of extensions 415 are provided on the other side of the second hinge 417, each extension 415 is equipped with a plug 416, and the plug 416 is inserted into the through hole on the top plate 113; and a plurality of pressure relief valve assemblies that can be flipped open are provided on each pressure relief plate 411.
[0028] In this application, a pressure relief body for a central cabinet is provided, and improvements are made in pressure relief, such as Figure 1 , 2 As shown in FIG. 4 , through the pressure relief cover structure, such as Figure 1 , 4 , 5 and 6, when there is a sudden abnormality or rapid pressure increase inside the central cabinet, such as short circuit fault, wire aging, human operation error, etc., high temperature and high pressure gas is generated instantly;
[0029] When the air pressure is normal, the reversible pressure relief valve components on the pressure relief plate 411 are adaptively opened to form a plurality of pressure relief channels for pressure relief;
[0030] When the air pressure is too high, the pressure relief plate 411 overcomes the torsion of the first return torsion spring and causes the pin 416 where the extension portion 415 is located to disengage from the through hole on the top plate 113 and complete its own flipping, thereby fully opening the rectangular channel where the mounting slot is located for a rapid pressure relief process.
[0031] Furthermore, a damping sleeve is provided on the outer wall of the plug column 416. Through the damping sleeve provided on the outer wall of the plug column 416, when the pressure relief plate 411 is closed, the damping sleeve where the plug column 416 is located is inserted into the through hole on the top plate 113 for damping limitation, thereby improving the closing performance of the pressure relief plate 411.
[0032] Furthermore, the base 214 is provided with a plurality of door openings for supporting the frame 111 to be lifted up a certain distance.
[0033] like Figure 1 , 4 As shown, by setting the height of the base 214 and the door opening structure, when the hot air is discharged from the bottom of the exhaust fan 511, it can quickly diffuse from the bottom to the surroundings.
[0034] Furthermore, the top plate 113 and the top of the frame 111 are assembled with bolts 114 , and the bolts 114 are distributed in a rectangular shape.
[0035] The top plate 113 is assembled with the top of the frame 111 by bolts 114 arranged around the top plate 113 through the action of a plurality of bolts 114, ensuring that the top plate 113 will not be separated from the frame 111 as a whole when the pressure is too large, thereby reducing the occurrence of major accidents.
[0036] Further, each pressure relief valve assembly includes a passage port 414 and a first hinge 413 disposed on the passage port 414 , wherein the first hinge 413 is provided with a deflectable pressure relief cover 412 via a second return torsion spring.
[0037] By further setting the pressure relief valve assembly, such as Figure 1 , 6As shown, there are three pressure relief covers 412 on each pressure relief plate 411, and they can be turned over by the first hinge 413. When the air pressure inside the frame 111 increases, several pressure relief covers 412 will open adaptively first, thereby forming a small pressure relief channel.
[0038] Furthermore, the torsion of the first return torsion spring is greater than that of the second return torsion spring. Under this design, when the pressure of the frame 111 is of normal intensity, it can only force the pressure relief cover 412 where the second return torsion spring is located to open, and a small pressure relief process is performed. When the pressure is too high sharply, the pressure relief plate 411 where the first return torsion spring is located is overcome and opened as a whole, and large-channel pressure relief is performed.
[0039] Example 2
[0040] As another embodiment of the utility model, a main power module 311 and several sections of wires 312 are also arranged on the top of the top plate 113, and also includes a conductive block 313 arranged on the lower surface of the pressure relief plate 411 and close to the main power module 311. When the pressure relief plates 411 are closed, the wires 312 form a closed circuit.
[0041] In this embodiment, based on the basis of embodiment 1, a total power module 311 and a wire 312 are designed, as shown in 5 and 6, the number of pressure relief plates 411 is three, when the middle cabinet is in normal condition or normal pressure is applied, the pressure relief plate 411 is always closed on the top plate 113, at this time, the conductive block 313 is connected to several sections of wire 312, so that the circuit of the total power module 311 is closed, and the middle cabinet is working normally with electricity. When the pressure in the middle cabinet increases sharply to the limit pressure, the pressure relief plate 411 will adaptively open, at this time the conductive block 313 is disconnected from the wire 312 port, and the circuit of the corresponding total power module 311 is disconnected, thereby cutting off the power to the middle cabinet, thereby further reducing the possibility of subsequent accidents in the middle cabinet expanding.
[0042] Example 3
[0043] As other embodiments of the utility model, an exhaust fan 511 is arranged at the bottom of the frame 111, and relatively distributed intake fans 215 are arranged on the upper parts of the two side panels 211. The two intake fans 215 work together with the exhaust fan 511 to allow external air flow to enter from the upper part of the intake fan 215 and flow downward along the frame 111 until it is discharged by the exhaust fan 511.
[0044] Through the combined action of the two upper air intake fans 215 and the bottom exhaust fan 511, the air intake fan 215 draws in air from the top of the frame 111 and exhausts the hot air from the exhaust fan 511 at the bottom of the frame 111, which can effectively remove the heat, keep the temperature inside the middle cabinet within an acceptable range, and provide heat dissipation protection. The exhaust fan 511 is located at the bottom, allowing the hot air to flow to a lower position for more natural discharge. The top-in and bottom-out design can effectively circulate the air, avoid hot air from being trapped inside the middle cabinet, reduce the risk of overheating of components and equipment, and ensure the normal operation and life of electrical equipment.
[0045] Furthermore, a heat conducting plate 611 is provided on the inner wall of the side plate 211 below the air intake fan 215 , and a heat dissipation plate 213 is provided on the outer wall of the side plate 211 , and a plurality of heat dissipation fins are provided on the heat dissipation plate 213 .
[0046] In this embodiment, if Figure 4 As shown, through the arrangement of the heat conducting plate 611 and the heat dissipation plate 213, the heat conducting plate 611 conducts the internal heat of the central cabinet to the heat dissipation plate 213, and the heat conduction heat is quickly dissipated through the heat dissipation plate 213 and the heat dissipation fins thereon.
[0047] Furthermore, a grid heat dissipation slot 212 is formed on the side wall of the side plate 211 , and a door body 112 and a top plate 113 are arranged on the rear side of the frame body 111 .
[0048] like Figure 1 and 2 By opening a grid heat dissipation groove 212 on the side wall of the side plate 211, and opening a door body 112 and a top plate 113 on the rear side of the frame body 111, the heat is dissipated from all around the central cabinet, further improving its heat dissipation efficiency.
[0049] Furthermore, a door body 112 is provided at the front side of the frame body 111 , so as to facilitate the later opening for maintenance and inspection of the interior of the frame body 111 .
[0050] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. There are many ways of detachable installation, for example, it can be through the method of plug-in and buckle matching, and for example, through the method of bolt connection, etc.
[0051] The specific description of the present invention in the above embodiments is only used to further illustrate the present invention and cannot be understood as limiting the scope of protection of the present invention. Technical engineers in this field may make some non-essential improvements and adjustments to the present invention based on the contents of the above-mentioned utility model, which fall within the scope of protection of the present invention.
Claims
1. A pressure relief body for a central cabinet, It is characterized in that include: A frame body (111), and side panels (211) arranged on both sides of the frame body (111); The bottoms of the two side panels (211) are each provided with a base (214) for raising the bottom of the frame (111); It also includes a pressure relief cover structure arranged on the top of the frame (111); the pressure relief cover structure includes a top plate (113), a plurality of mounting grooves are arranged on the top plate (113), and a pressure relief plate assembly is arranged on each mounting groove; Each group of pressure relief plate assemblies comprises a pressure relief plate (411), a second hinge (417) is provided on one side of the pressure relief plate (411), a first return torsion spring is provided between the second hinge (417) and the pressure relief plate (411), and both ends of the second hinge (417) are mounted on mounting grooves at corresponding positions, a plurality of extensions (415) are provided on the other side of the second hinge (417), each of the extensions (415) is equipped with a plug post (416), and the plug post (416) is plugged into a through hole on the top plate (113); And a plurality of pressure relief valve assemblies are arranged on each pressure relief plate (411) and can be flipped open.
2. A pressure relief body for a central cabinet according to claim 1, Features: The outer wall of the plug post (416) is provided with a damping sleeve.
3. A pressure relief body for a central cabinet according to claim 1, Features: Each of the pressure relief valve assemblies comprises a passage port (414) and a first hinge (413) arranged on the passage port (414), wherein the first hinge (413) is provided with a deflectable pressure relief cover (412) via a second return torsion spring.
4. A pressure relief body for a central cabinet according to claim 1, Features: The torsion force of the first return torsion spring is greater than the torsion force of the second return torsion spring.
5. A pressure relief body for a central cabinet according to claim 1, Features: The top of the top plate (113) is also provided with a main power module (311) and a plurality of wires (312), and also includes a conductive block (313) arranged on the lower surface of the pressure relief plate (411) and close to the main power module (311), and is used for the wires (312) to form a closed circuit when the pressure relief plates (411) are closed.
6. A pressure relief body for a central cabinet according to claim 1, Features: An exhaust fan (511) is arranged at the bottom of the frame (111), and the upper parts of the two side panels (211) are provided with relatively distributed intake fans (215), and the two intake fans (215) and the exhaust fan (511) work together to allow external airflow to enter from the upper part of the intake fan (215) and flow downward along the frame (111) until it is discharged by the exhaust fan (511).
7. A pressure relief body for a central cabinet according to claim 1, Features: The base (214) is provided with a plurality of door openings and is used to support the frame (111) so that it is lifted up a certain distance.
8. A pressure relief body for a central cabinet according to claim 6, Features: A heat conduction plate (611) is arranged on the inner wall of the side plate (211) below the air intake fan (215), and a heat dissipation plate (213) is arranged on the outer wall of the side plate (211), and a plurality of heat dissipation fins are arranged on the heat dissipation plate (213).
9. A pressure relief body for a central cabinet according to claim 1, Features: The side panels (211) are provided with grid heat dissipation slots (212) on their side walls, and with a door body (112) and a top plate (113) arranged on the rear side of the frame body (111).
10. A pressure relief body for a central cabinet according to claim 1, Features: The top plate (113) and the top of the frame (111) are assembled using bolts (114), and the bolts (114) are distributed in a rectangular shape.