Disclosure of utility model
The utility model aims to provide a pressure relief machine body for a centrally installed switchgear, which has two pressure relief modes under different pressures through a pressure relief top cover structure, and the safety of the pressure relief machine body is effectively improved.
The pressure relief machine body for the centrally installed switchgear comprises a frame body and side plates arranged on two sides of the frame body, bases are arranged at the bottoms of the two side plates and used for lifting the bottom of the frame body, the pressure relief machine body further comprises a pressure relief top cover structure arranged on the top of the frame body, the pressure relief top cover structure comprises a top plate, a plurality of mounting grooves are formed in the top plate, pressure relief plate assemblies are arranged on each mounting groove, each pressure relief plate assembly comprises a pressure relief plate, a second hinge is arranged on one side of each pressure relief plate assembly, a first reset torsion spring is arranged between the second hinge and each pressure relief plate, two ends of the second hinge are assembled on the corresponding mounting groove, a plurality of extension parts are arranged on the other side of each second hinge, each extension part is provided with a plug-in column, the plug-in column is inserted into a through hole in the top plate, and a plurality of pressure relief valve assemblies which can be opened in a turnover mode are arranged on each pressure relief plate.
Preferably, the outer wall of the inserted column is provided with a damping sleeve.
Preferably, each pressure relief valve assembly comprises a channel port, and a first hinge disposed on the channel port, the first hinge being provided with a deflectable relief cap by a second return torsion spring.
Preferably, the torsion force of the first reset torsion spring is larger than that of the second reset torsion spring.
Preferably, the top of roof still is provided with total power module and a plurality of sections wire, still includes the setting at the pressure release board lower surface and is close to the conductive block of total power module position, when a plurality of pressure release board closes the lid, is used for the wire to form closed circuit.
Preferably, the exhaust fans are arranged at the bottom in the frame body, the upper parts of the two side plates are provided with relatively distributed air inlet fans, and the two air inlet fans and the exhaust fans are combined to enable external air flow to enter from the upper parts of the air inlet fans and downwards along the frame body until the exhaust fans are exhausted.
Preferably, the base is provided with a plurality of door openings and is used for supporting the frame body to enable the frame body to be lifted for a certain distance.
Preferably, the inner wall of the side plate below the air inlet fan is provided with a heat conducting plate and a heat radiating plate arranged on the outer wall of the side plate, and the heat radiating plate is provided with a plurality of heat radiating fins.
Preferably, the side wall of the side plate is provided with a grid heat dissipation groove, and a door body and a top plate which are arranged at the rear side of the frame body.
Preferably, bolts are adopted between the top plate and the top of the frame body for assembly, and the bolts are distributed in a rectangular shape.
Compared with the prior art, the utility model has the following beneficial effects:
1. According to the utility model, through the pressure relief top cover structure, when the air pressure is in general intensity, the plurality of pressure relief valve assemblies capable of being overturned on the pressure relief plate are self-adaptively opened to form the plurality of pressure relief channels for pressure relief, when the air pressure intensity is overlarge, the pressure relief plate overcomes the torsion of the first reset torsion spring, and enables the inserted column where the extension part is located to be separated from the through hole on the top plate so as to complete the overturning of the inserted column, thereby enabling the rectangular channel where the installation groove is located to be completely opened for rapid pressure relief.
2. Through the combined action of two air inlet fans on the upper part and the bottom exhaust fan, air can be effectively circulated through the design of going up, hot air is prevented from being detained in the middle cabinet, the overheat risk of elements and equipment is reduced, and the normal operation and the service life of electrical equipment are ensured.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic diagram of the structure of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 1;
FIG. 4 is a cross-sectional perspective view taken along line A-A of FIG. 3;
FIG. 5 is a top view of the pressure relief cabinet of the present utility model;
fig. 6 is a schematic structural diagram of the top of the pressure release cabinet of the present utility model.
In the figure, 111, a frame body, 112, a door body, 113, a top plate, 114, bolts, 211, side plates, 212, grid radiating grooves, 213, radiating plates, 214, a base, 215, an air inlet fan, 311, a total power module, 312, a wire, 313, a conductive block, 411, a pressure release plate, 412, a pressure release cover, 413, a first hinge, 414, a channel port, 415, an extension part, 416, a plug, 417, a second hinge, 511, an exhaust fan, 611 and a heat conducting plate.
Detailed Description
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model. Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.
Example 1
Referring to fig. 1 to 6, the utility model preferably provides a pressure relief machine body for a centrally installed switchgear, which comprises a frame 111, side plates 211 arranged on two sides of the frame 111, a base 214 arranged at the bottoms of the two side plates 211 and used for lifting the bottom of the frame 111, a pressure relief top cover structure arranged at the top of the frame 111, a pressure relief top cover structure comprising a top plate 113, a plurality of mounting grooves arranged on the top plate 113, and pressure relief plate assemblies arranged on each mounting groove, wherein each pressure relief plate assembly comprises a pressure relief plate 411, a second hinge 417 is arranged on one side of the pressure relief plate 411, a first reset torsion spring is arranged between the second hinge 417 and the pressure relief plate 411, two ends of the second hinge 417 are assembled on the mounting grooves at corresponding positions, a plurality of extension portions 415 are arranged on the other side of the second hinge 417, a plug 416 is assembled on each extension portion 415, the plug 416 is plugged into a through hole on the top plate 113, and a plurality of pressure relief valve assemblies arranged on each pressure relief plate 411 and capable of being turned and opened.
In the application, a pressure relief machine body for a centrally installed switchgear is provided, and is improved in pressure relief, as shown in fig. 1, 2 and 4, high-temperature and high-pressure gas is instantaneously generated through a pressure relief top cover structure, as shown in fig. 1, 4, 5 and 6, when the interior of the centrally installed switchgear is suddenly abnormal and rapidly pressurized, such as short-circuit fault, wire aging, manual operation error and the like;
When the air pressure intensity is common, a plurality of overturned pressure relief valve assemblies on the pressure relief plate 411 are self-adaptively opened to form a plurality of pressure relief channels for pressure relief;
When the air pressure intensity is too high, the pressure release plate 411 overcomes the torsion of the first reset torsion spring and enables the inserted column 416 where the extension part 415 is located to be separated from the through hole on the top plate 113 so as to complete the overturning of the pressure release plate, so that the rectangular channel where the mounting groove is located is completely opened, and the quick pressure release process is performed.
Further, the outer wall of the inserting column 416 is provided with a damping sleeve, and when the pressure release plate 411 is closed, the damping sleeve of the inserting column 416 is inserted into the through hole on the top plate 113 to perform damping limiting, so that the closing performance of the pressure release plate 411 is improved.
Further, the base 214 is provided for a plurality of door openings for supporting the frame 111 to be lifted a certain distance.
As shown in fig. 1 and 4, when the hot air is discharged from the bottom of the exhaust fan 511 by the height of the base 214 and the door opening structure, the hot air can be rapidly diffused from the bottom to the periphery.
Further, bolts 114 are adopted to assemble the top plate 113 and the top of the frame 111, and the bolts 114 are distributed in a rectangular shape.
Through the bolts 114 that the roof 113 set up all around, through a plurality of bolts 114 effect, accomplish the assembly at roof 113 and support body 111 top, guarantee also can not make the roof 113 wholly break away from support body 111 when the pressure is too big, reduce the major accident and take place.
Further, each relief valve assembly includes a channel port 414, and a first hinge 413 disposed on the channel port 414, the first hinge 413 being provided with a deflectable relief cap 412 by a second return torsion spring.
Through the further setting of relief valve subassembly, as shown in fig. 1, 6, the relief cap 412 quantity on every relief plate 411 is three, and can realize self upset through first hinge 413, when the inside atmospheric pressure of support body 111 increases, at first a plurality of relief caps 412 self-adaptation are opened, and then form small-size pressure release passageway.
Further, the torsion force of the first reset torsion spring is larger than that of the second reset torsion spring, under the design, when the frame 111 has normal pressure, the pressure release cover 412 where the second reset torsion spring is located can only be forced to be opened for small pressure release, and when the pressure is suddenly excessive, the pressure release plate 411 where the first reset torsion spring is located is overcome to be opened integrally, and then the pressure is released for a large channel.
Example 2
As another embodiment of the present utility model, the top of the top plate 113 is further provided with a total power module 311 and a plurality of segments of wires 312, and further includes a conductive block 313 disposed on the lower surface of the pressure release plate 411 and close to the total power module 311, and when the pressure release plates 411 are closed, the wires 312 form a closed circuit.
In this embodiment, based on the basis of embodiment 1, the number of the total power modules 311 and the wires 312 is designed, as shown in fig. 5 and 6, the number of the pressure release plates 411 is three, when the centrally installed switchgear is under normal condition or under normal pressure, the pressure release plates 411 are always covered on the top plate 113, at this time, the conductive blocks 313 are communicated with a plurality of sections of wires 312, so that the circuit of the total power modules 311 is closed, at this time, the centrally installed switchgear is normally powered up, when the pressure of the centrally installed switchgear is rapidly increased until the limit pressure, the pressure release plates 411 are self-adaptively opened, at this time, the conductive blocks 313 are separated from the ports of the wires 312, and the circuit of the corresponding total power modules 311 is disconnected, so that the centrally installed switchgear is powered down, thereby further reducing the possibility of subsequent accident expansion of the centrally installed switchgear.
Example 3
As other embodiments of the present utility model, an exhaust fan 511 is disposed at the bottom of the frame 111, and the upper parts of the two side plates 211 are provided with relatively distributed intake fans 215, and the two intake fans 215 and the exhaust fan 511 cooperate to allow the external air flow to enter from the upper part of the intake fan 215 and to be discharged down the frame 111 to the exhaust fan 511.
Through the combined action of the two air inlet fans 215 at the upper part and the exhaust fan 511 at the bottom, the air inlet fans 215 are enabled to suck air from the upper part of the frame body 111, and hot air is discharged from the exhaust fan 511 at the bottom of the frame body 111, so that heat can be effectively taken away, the temperature inside the middle cabinet is kept within an acceptable range, heat dissipation protection is provided, the exhaust fan 511 is positioned at the bottom, hot air flows to a lower position so as to be discharged more naturally, the air can be effectively circulated through the design of upper inlet and lower outlet, the hot air is prevented from being detained inside the middle cabinet, the overheat risk of elements and equipment is reduced, and the normal operation and service life of electrical equipment are ensured.
Further, a heat conducting plate 611 is disposed on the inner wall of the side plate 211 below the air intake fan 215, and a heat dissipating plate 213 is disposed on the outer wall of the side plate 211, and a plurality of heat dissipating fins are disposed on the heat dissipating plate 213.
In this embodiment, as shown in fig. 4, by the arrangement of the heat conducting plate 611 and the heat dissipating plate 213, the heat conducting plate 611 conducts the heat inside the mid-tank to the heat dissipating plate 213, and the heat conducting plate 213 and the heat dissipating fins thereon conduct rapid dispersion of the conducted heat.
Further, the side wall of the side plate 211 is provided with a grid heat dissipation groove 212, a door 112 and a top plate 113 which are arranged at the rear side of the frame 111.
As shown in fig. 1 and 2, by providing the side wall of the side plate 211 with the grid heat dissipation groove 212 and providing the rear side of the frame 111 with the door 112 and the top plate 113, heat is dissipated from the periphery of the centrally installed switchgear, and heat dissipation efficiency is further improved.
Further, the door body 112 is arranged at the front side of the frame body 111, so that the door body is convenient to open at a later stage for maintenance and inspection of the inside of the frame body 111.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements or in an interaction relationship between two elements. The detachable mounting mode is various, for example, the detachable mounting mode can be matched with the buckle through plugging, for example, the detachable mounting mode can be realized through a bolt connection mode, and the like.
The foregoing embodiments are provided for further explanation of the present utility model and are not to be construed as limiting the scope of the present utility model, and some insubstantial modifications and variations of the present utility model, which are within the scope of the utility model, will be suggested to those skilled in the art in light of the foregoing teachings.