An emergency pressure relief intelligent lock switch cabinet

Abstract

The present application relates to switchgear pressure relief technical field, specifically, it relates to a kind of emergency pressure relief intelligent lock switchgear.It includes cabinet and the pressure relief cover plate being arranged at the top of cabinet, it further includes buffer flow guide mechanism and pre-gas collection mechanism, wherein:the pre-gas collection mechanism is used to blow the gas collected in advance to the buffer flow guide mechanism when high pressure appears in the inside of cabinet;The buffer flow guide mechanism is located in the lower buffer port and upper buffer port of the side wall of the cabinet;In the emergency pressure relief intelligent lock switchgear, the first buffer flow guide piece in lower buffer port and the second buffer flow guide piece in upper buffer port can be automatically opened when high pressure appears, on the one hand, reduce the phenomenon that local high pressure appears in the inside of cabinet, on the other hand, the first buffer flow guide piece and the second buffer flow guide piece can be cooperated with gas after opening, guide the gas in the inside of cabinet, thereby reduce the number of fault shutdown, reach the purpose of power saving.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet pressure relief, in particular to an emergency pressure relief intelligent lock switch cabinet. BACKGROUND

[0002] The intelligent lock switch cabinet is a power distribution device integrated with modern information technology, automation control technology and power equipment management technology. It not only has the basic functions of switching, protection, etc. of traditional switch cabinets, but also supports remote control and one-key sequence control functions. Through network connection, users can remotely operate through mobile phones, computers or other terminal devices at any time and anywhere, including the opening, closing and parameter adjustment of the device, providing users with a safer, more efficient and more convenient electricity experience.

[0003] During the operation of the switch cabinet, due to various reasons (such as short circuit, insulation aging, human operation error, etc.), a primary circuit short circuit fault occurs, under tens of thousands of amperes of short circuit current, high temperature and high pressure gas is generated instantaneously, if the high temperature and high pressure gas cannot be effectively released in a very short time in the narrow cabinet body, it will cause the switch cabinet to burst, damage the adjacent switch cabinet, and may also injure the personal safety. Therefore, when designing the switch cabinet, effective pressure relief measures must be considered.

[0004] The switch cabinet releases the internal pressure in time through pressure relief, avoiding the explosion or damage of the equipment caused by short circuit or overload. After improving the reliability of the equipment, the waste of electric energy caused by fault shutdown (such as system restart, standby power switching, etc.) can be reduced, achieving the purpose of saving electricity.

[0005] The most commonly used pressure relief method for the current switch cabinet is to install a pressure relief cover plate on each compartment of the switch cabinet, one end is fixed with metal screws, and the other end is fixed with nylon screws. When the fault arc occurs, the nylon screw is disconnected to release the pressure in time, and the metal screw makes the pressure relief cover plate not fly up and injure people. However, the current pressure relief method has the following problems:

[0006] On the one hand, due to the large number of components in the cabinet, it is easy to affect the flow of gas, when the high temperature and high pressure gas generated instantaneously is far away from the pressure relief cover plate, it is difficult for the high temperature and high pressure gas to flow to the pressure relief cover plate in time, causing the local pressure of the cabinet to be too high in a short time, leading to the restart of other equipment after fault shutdown, causing the loss of electric power, which is not conducive to saving electric power;

[0007] On the other hand, after the pressure relief cover plate is opened, the high-pressure gas can be discharged through the pressure relief cover plate, but due to the lack of flow power of the gas inside the cabinet body, part of the high-temperature gas still exists in the cabinet body, thereby affecting the service life of other components in the cabinet body, and due to the failure to discharge the high temperature in time, the phenomenon of fire is easy to occur, which still causes the fault shutdown, so that the system needs to be frequently restarted or switched to the standby power supply, causing the power loss, which is not conducive to saving power. SUMMARY

[0008] The purpose of the present application is to provide an emergency pressure relief intelligent lock switch cabinet, which sets a buffer flow guide mechanism in the lower buffer port and the upper buffer port, and uses the buffer flow guide mechanism to relieve pressure and guide gas flow, thereby solving the problems raised in the background art, i.e. the problem of excessive local pressure in the cabinet body in a short time and the problem of difficulty in quickly discharging part of the high-temperature gas from the cabinet body.

[0009] To achieve the above purpose, the emergency pressure relief intelligent lock switch cabinet comprises a cabinet body and a pressure relief cover plate arranged at the top of the cabinet body, and further comprises a buffer flow guide mechanism and a pre-gas collection mechanism, wherein:

[0010] The pre-gas collection mechanism is used to blow the pre-collected gas to the buffer flow guide mechanism when high pressure occurs in the cabinet body;

[0011] The buffer flow guide mechanism is located in the lower buffer port and the upper buffer port arranged on the side wall of the cabinet body, and the buffer flow guide mechanism comprises a plurality of flow guide plates arranged in a longitudinal manner, the flow guide plates having a free state and a pressure state;

[0012] In the free state, the plurality of flow guide plates are in contact with each other to close the lower buffer port and the upper buffer port; in the pressure state, the plurality of flow guide plates are separated from each other to open the lower buffer port and the upper buffer port, and the flow guide plates guide the gas at the lower buffer port and the upper buffer port, so that the gas enters the cabinet body from the lower buffer port and then is discharged through the upper buffer port; wherein the pressure state is the state of the flow guide plates under the action of the high-pressure gas inside the cabinet body.

[0013] And in the pressure state, the bottom end of the flow guide plate located in the lower buffer port protrudes outside the cabinet body, for guiding the gas at the lower buffer port into the cabinet body; the bottom end of the flow guide plate located in the upper buffer port protrudes inside the cabinet body, for cooperating with the gas at the upper buffer port to exhaust the gas inside the cabinet body, so that the gas inside the cabinet body forms a convection.

[0014] In the above technical solution, the guide plate closes the lower and upper buffer ports in a free state to maintain a sealed environment in the cabinet body. When in a pressure state, the guide plate not only automatically opens to partially release the pressure of the cabinet body, but also guides the airflow by changing its angle, thereby accelerating the flow of air inside the cabinet body while assisting in pressure relief.

[0015] On this basis, the buffer guide mechanism further comprises a mounting frame and a plurality of rotating shafts rotatably arranged in the mounting frame, the mounting frame is arranged in the lower and upper buffer ports; the plurality of rotating shafts are arranged in a longitudinal array; one end of the guide plate corresponding to the lower buffer port is fixedly connected to the corresponding rotating shaft; the guide plate corresponding to the upper buffer port is slidably penetrated through the corresponding rotating shaft; and the buffer guide mechanism further comprises a limiting piece for maintaining the guide plate in a pressure state.

[0016] The limiting piece comprises a limiting slot and a limiting plate with one end extending into the limiting slot, the limiting plate is fixedly arranged on one side of the mounting frame, one end of the rotating shaft protrudes from the side wall of the mounting frame and is located below the limiting plate; the limiting slot is arranged on the outer ring of the rotating shaft; one side of the limiting plate is magnetically attracted to one side of the limiting slot to maintain the guide plate in a pressure state.

[0017] This structure design: the guide plate is fixedly connected with the rotating shaft to introduce gas into the cabinet body; the guide plate is slidably connected with the rotating shaft to discharge gas from the cabinet body. Through the cooperation of the two sets of guide plates, the rapid flow of gas in the cabinet body is realized.

[0018] On this basis, the pre-gas collection mechanism comprises a piston cylinder fixedly arranged on the side wall of the cabinet body and a piston slidably arranged in the piston cylinder, a return spring is arranged between the piston and the piston cylinder; the bottom of the piston cylinder is communicated with an exhaust pipe arranged below the buffer guide mechanism, and the exhaust port of the exhaust pipe is parallel to the outside of the cabinet body; the top of the piston is eccentrically rotatably provided with a clamping plate, the clamping plate falls on or is separated from the top end of the piston cylinder by rotation; and the pre-gas collection mechanism further comprises a driving piece for driving the clamping plate to rotate.

[0019] Here, the piston is used to collect gas in advance, so that when high pressure occurs, the collected gas can be quickly discharged, thereby cooperating with the guide plate.

[0020] In another technical solution, when one end of the limiting plate abuts against the limiting slot, the two adjacent guide plates are in a non-contact state.

[0021] This technical solution can open a part of the lower and upper buffer ports, and the guide plate at this time prevents external rainwater from entering the cabinet body. On the one hand, it realizes heat dissipation of the cabinet body under normal conditions, and on the other hand, it has a waterproof effect.

[0022] Compared with the prior art, the application has the beneficial effects:

[0023] 1. In the emergency pressure relief intelligent lock switch cabinet, the first buffer flow guide in the lower buffer port and the second buffer flow guide in the upper buffer port can be automatically opened when high pressure occurs, on the one hand, reducing the phenomenon of local high pressure in the cabinet body, on the other hand, the first buffer flow guide and the second buffer flow guide can cooperate with the gas after being opened, guiding the gas in the cabinet body, realizing the rapid discharge of the gas in the cabinet body, thereby reducing the number of fault shutdown, achieving the purpose of power saving.

[0024] 2. In the emergency pressure relief intelligent lock switch cabinet, the first buffer flow guide and the second buffer flow guide can also open the lower buffer port and the upper buffer port under normal conditions, realizing the heat dissipation of the cabinet body. And the opened first buffer flow guide and the second buffer flow guide can block the external water source, achieving the waterproof effect. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the application;

[0026] Figure 2 It is a schematic diagram of the structure of the cabinet body of the application;

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the cabinet body of the application;

[0028] Figure 4 It is a schematic diagram of the structure of the first buffer flow guide of the application;

[0029] Figure 5 It is a schematic diagram of the working state of the first flow guide plate of the application;

[0030] Figure 6 It is a schematic diagram of the structure of the second buffer flow guide of the application;

[0031] Figure 7 It is a schematic diagram of the working state of the second flow guide plate of the application;

[0032] Figure 8 It is a schematic diagram of the structure of the limiting groove of the application Figure 1 ;

[0033] Figure 9 It is a schematic diagram of the structure of the limiting groove of the application Figure 2 ;

[0034] Figure 10 It is a schematic diagram of the structure of the pre-gas collection mechanism of the application;

[0035] Figure 11 It is a schematic diagram of the structure of the piston of the application;

[0036] Figure 12 A schematic diagram of the flow direction of the gas of the present application;

[0037] Figure 13 A schematic diagram of the structure of the limiting groove of the present application Figure 3 ;

[0038] Figure 14 A schematic diagram of the structure of the first flow guide plate of the present application.

[0039] The meanings of various reference numerals in the drawings are as follows:

[0040] 100, cabinet body; 101, pressure relief cover plate; 102, lower buffer port; 103, upper buffer port; 110, first buffer flow guide; 111, first mounting frame; 112, first rotating shaft; 113, first flow guide plate; 120, second buffer flow guide; 121, second mounting frame; 122, second rotating shaft; 123, second flow guide plate; 130, pre-gas collection mechanism; 131, piston cylinder; 132, piston; 133, return spring; 134, exhaust pipe; 135, clamping plate; 136, push plate; 140, limiting plate; 141, limiting groove. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0042] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0043] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0044] In view of the problems of local overpressure of the cabinet 100 in a short time and difficulty of the high-temperature gas to be discharged from the cabinet 100, the application provides an emergency pressure relief intelligent lock switch cabinet. Figure 1 As shown in the figure, the switch cabinet comprises a cabinet 100, the top of the cabinet 100 is provided with a pressure relief channel, the top of the pressure relief channel is provided with a pressure relief cover plate 101, one end of the pressure relief cover plate 101 is fixed on the top of the cabinet 100 by metal screws, and the other end is fixed on the top of the cabinet 100 by nylon screws. When the fault arc occurs, the nylon screws are disconnected to release the internal pressure of the cabinet 100 in time, and the metal screws make the pressure relief cover plate 101 not fly up to hurt people.

[0045] The switch cabinet further comprises a buffer flow guide mechanism and a pre-gas collection mechanism 130. The pre-gas collection mechanism 130 is arranged on the side wall of the cabinet 100, and is used for blowing the pre-collected gas to the lower buffer port 102 and the upper buffer port 103 in the cabinet 100 when high pressure occurs in the cabinet 100, and the blowing direction of the gas is parallel to the side wall of the cabinet 100. Figure 2

[0046] The buffer flow guide mechanism is arranged in the lower buffer port 102 and the upper buffer port 103 in the cabinet 100, and the buffer flow guide mechanism comprises a plurality of flow guide plates arranged in a longitudinal manner. Figure 2 In the application, the flow guide plates have a free state and a pressure state. In the free state, the plurality of flow guide plates are in contact with each other to close the lower buffer port 102 and the upper buffer port 103 (see Figure 3 ); in the pressure state, the plurality of flow guide plates are separated from each other to open the lower buffer port 102 and the upper buffer port 103 (see Figure 12 ). Specifically, the free state is the state of the flow guide plates without being affected by external factors, and the pressure state is the state of the flow guide plates affected by the high-pressure gas in the cabinet 100; and in the pressure state, the flow guide plates guide the gas at the lower buffer port 102 and the upper buffer port 103, so that the gas enters the cabinet 100 through the lower buffer port 102 and then is discharged through the upper buffer port 103.

[0047] Specifically refer to Figure 12 In the pressure state: the bottom end of the flow guide plate located in the lower buffer port 102 protrudes outside the cabinet 100 (i.e. the flow guide plate is inclined to the outside of the cabinet 100), which is used for guiding the gas at the lower buffer port 102 to the inside of the cabinet 100; the bottom end of the flow guide plate located in the upper buffer port 103 protrudes inside the cabinet 100 (i.e. the flow guide plate is inclined to the inside of the cabinet 100), which is used for cooperating with the gas at the upper buffer port 103 to exhaust the gas in the cabinet 100, so that the gas in the cabinet 100 forms a convection.

[0048] In the above, the positions of the lower buffer port 102 and the upper buffer port 103 can be flexibly adjusted according to actual conditions, so this will not be described here.​

[0049] To facilitate understanding of the buffering and guiding mechanism, this invention describes the buffering and guiding mechanism as a first buffering and guiding element 110 and a second buffering and guiding element 120. The first buffering and guiding element 110 is disposed... Figure 2 The second buffer guide 120 is set inside the lower buffer port 102. Figure 2 The first buffer guide 110 and the second buffer guide 120 are similar in structure, both including a mounting frame, multiple rotating shafts rotatably disposed within the mounting frame, and guide plates connected to the rotating shafts. The difference lies in the connection state between the guide plates and the rotating shafts. The structure of the first buffer guide 110 and the second buffer guide 120 will be described in detail below:

[0050] like Figure 4 As shown, the first buffer guide 110 includes a first mounting frame 111 installed within the lower buffer port 102, a plurality of first rotating shafts 112 rotatably disposed within the first mounting frame 111, and a first guide plate 113 with one end fixedly connected to the outer ring of the first rotating shafts 112; wherein, the plurality of first rotating shafts 112 are arranged in a longitudinal array. Thus, as... Figure 5 As shown, under normal conditions (i.e., free state), due to the gravity of the first guide plate 113, the bottom end of the upper first guide plate 113 rests on the top of the lower first guide plate 113 (or on the outer ring of the lower first rotating shaft 112), thereby sealing the interior of the first mounting frame 111 and preventing external pollutants from entering the cabinet 100. When high pressure occurs inside the cabinet 100 (i.e., under pressure), due to the pressure difference between the inside and outside of the cabinet 100, the gas will push the first guide plates 113 outwards under the pressure difference, thereby causing the multiple first guide plates 113 to detach from each other and open the first mounting frame 111. After opening, the bottom end of the first guide plate 113 protrudes outwards from the outside of the first mounting frame 111 (the outside of the first mounting frame 111 is flush with the outside of the cabinet 100), and the protrusion distance d can be adaptively adjusted according to the position of the gas. To maintain the first guide plate 113 in... Figure 5 Regarding the state of the right half of the image, the present invention limits the opening of the first guide plate 113 by setting a limiting member, which will be described in detail below.

[0051] like Figure 6 As shown, the second buffer guide 120 includes a second mounting frame 121 installed within the upper buffer port 103, a plurality of second rotating shafts 122 rotatably disposed within the second mounting frame 121, and a second guide plate 123 with one end fixedly connected to the outer ring of the second rotating shafts 122; wherein, the plurality of second rotating shafts 122 are arranged in a longitudinal array; the second guide plate 123 is slidably disposed through the second rotating shafts 122. Specifically, as follows...Figure 7 As shown, the two ends of the second flow guide plate 123 are bent to one side to form protrusions, which prevent the second flow guide plate 123 from being separated from the second rotating shaft 122. Next, referring to Figure 7 In the normal state (i.e., the free state), under the action of the gravity of the second flow guide plate 123, the second flow guide plate 123 slides downward to have its bottom end rest on the top of the second flow guide plate 123 below (or on the outer ring of the second rotating shaft 122 below), thereby closing the inside of the second mounting frame 121 and preventing external pollutants from entering the inside of the cabinet 100. When high pressure appears in the inside of the cabinet 100 (i.e., the pressure state), due to the difference in pressure between the inside and outside of the cabinet 100, the gas will push the second flow guide plate 123 outward under the action of the pressure difference. Since the high-pressure gas will be formed instantaneously, the second flow guide plate 123 will have inertia to realize the Figure 7 directional rotation of the hollow arrow, realize the mutual separation between the plurality of second flow guide plates 123, open the second mounting frame 121, and then under the action of gravity, the second flow guide plate 123 slides inward into the second mounting frame 121 to form Figure 7 the state of the right half in the figure. In order to maintain the state of the first flow guide plate 113 in Figure 7 the right half in the figure, a limiting piece is also provided here to limit the opened second flow guide plate 123.

[0052] Specifically, the limiting piece includes a limiting plate 140 and a limiting groove 141, wherein one end of the limiting plate 140 extends into the limiting groove 141 to limit the rotation amplitude of the limiting groove 141, and one side of the limiting plate 140 is magnetically attracted to one side of the limiting groove 141.

[0053] In the embodiment shown in Figure 6 , the limiting plate 140 is fixedly arranged on one side of the second mounting frame 121, one end of the second rotating shaft 122 protrudes from the side wall of the second mounting frame 121 and is located below the limiting plate 140, and the limiting groove 141 is arranged on the outer ring of the second rotating shaft 122. The arrangement position of the limiting groove 141 is referred to Figure 8 . As shown, in the normal state, the limiting plate 140 is in contact with the left side of the limiting groove 141 to make the second flow guide plate 123 close the second mounting frame 121; when high pressure appears in the inside of the cabinet 100, the limiting plate 140 is magnetically attracted to the right side of the limiting groove 141 to make the second flow guide plate 123 open the second mounting frame 121 and maintain the state of the right half in the figure. Figure 8

[0054] As shown in Figure 4 ​In the shown embodiment, the limiting plate 140 is fixedly arranged at one side of the first mounting frame 111, one end of the first rotating shaft 112 protrudes from the side wall of the first mounting frame 111 and is located below the limiting plate 140, and the limiting groove 141 is arranged at the outer ring of the first rotating shaft 112. The arrangement position of the limiting groove 141 is shown with reference to Figure 9 . As shown, in the normal state, the limiting plate 140 is in contact with the left side of the limiting groove 141, so that the first flow guide plate 113 closes the first mounting frame 111; when high pressure occurs inside the cabinet 100, the limiting plate 140 is magnetically attracted to the right side of the limiting groove 141, so that the first flow guide plate 113 opens the first mounting frame 111 and maintains the state shown in the right half of Figure 9 .

[0055] It should be understood that the size of the limiting groove 141 is adaptively arranged according to the required rotating angle of the second rotating shaft 122 or the second mounting frame 121. Specifically, the state of the limiting groove 141 in Figure 8 and Figure 9 may be referred to.

[0056] It is worth noting that, since the rotating range of the first rotating shaft 112 is small, the outer ring of the first rotating shaft 112 is arranged to protrude outward, which can increase the distance between the first rotating shaft 112 and the limiting plate 140, thereby avoiding the magnetic attraction between the limiting plate 140 and the right side of the limiting groove 141 all the time.

[0057] Therefore, the first buffer flow guide 110 in the lower buffer port 102 and the second buffer flow guide 120 in the upper buffer port 103 can be automatically opened when high pressure occurs, on the one hand, reducing the phenomenon of local high pressure inside the cabinet 100, on the other hand, the first buffer flow guide 110 and the second buffer flow guide 120 can cooperate with the gas after being opened, guiding the gas inside the cabinet 100, realizing the rapid discharge of the gas inside the cabinet 100, to avoid the temperature inside the cabinet 100 being too high, thereby reducing the number of fault shutdowns and achieving the purpose of power saving.

[0058] As shown in Figure 10 , the pre-gas collecting mechanism 130 includes a piston cylinder 131 fixedly arranged at the side wall of the cabinet 100 and a piston 132 slidably arranged inside the piston cylinder 131, and the bottom of the piston 132 is elastically connected with the inside of the piston cylinder 131 by a return spring 133. The bottom of the piston cylinder 131 is communicated with an exhaust pipe 134, the exhaust pipe 134 is arranged below the first buffer flow guide 110 and the second buffer flow guide 120, and the exhaust port of the exhaust pipe 134 is parallel to the outside of the cabinet 100. As Figure 11As shown, the top of the piston 132 is eccentrically provided with a clamping plate 135 which is in a rotating manner to fall on or off the top end of the piston cylinder 131. At the same time, the pre-gas collecting mechanism 130 further comprises a driving member for driving the clamping plate 135 to rotate.

[0059] In some embodiments, the driving member can be a motor, a cylinder or the like device, and by arranging a pressure sensor inside the cabinet 100, when the pressure sensor detects that the pressure inside the cabinet 100 exceeds the preset pressure, the motor, the cylinder or the like device drives the clamping plate 135 to rotate, so that the clamping plate 135 is separated from the top end of the piston cylinder 131.

[0060] In other embodiments, the driving member comprises a push plate 136 which is slidingly arranged in a sliding groove arranged on the side wall of the cabinet 100, the volume of the push plate 136 corresponds to the volume of the sliding groove, and one side of the push plate 136 is arranged to abut against the side wall of the clamping plate 135. In this way, when the pressure inside the cabinet 100 is too high, since one side of the push plate 136 is outside, the air pressure inside the cabinet 100 will push the push plate 136 towards the clamping plate 135, so that the clamping plate 135 rotates and separates from the top end of the piston cylinder 131. Through this design, the mechanical driving mode can be independent of electricity, and the stability can be increased.

[0061] The working principle of the present application will be described in detail as follows:

[0062] Firstly, the piston 132 is moved upwards to the top of the piston cylinder 131, and the clamping plate 135 is rotated to fall on the top end of the piston cylinder 131, so that the piston 132 is prevented from moving downwards, and at this time the return spring 133 is in a stretched state. Then, referring to Figure 3 In a normal state, the first flow guide plate 113 and the second flow guide plate 123 close the lower buffer port 102 and the upper buffer port 103. When high pressure appears inside the cabinet 100, under the action of the pressure, the first flow guide plate 113 and the second flow guide plate 123 will be pushed to the outside of the cabinet 100, and the corresponding first rotating shaft 112 and second rotating shaft 122 will also rotate synchronously, so that one side of the limiting groove 141 rotates towards the limiting plate 140, and then one side of the limiting plate 140 is magnetically attached to one side of the limiting groove 141, so that the first rotating shaft 112 and the second flow guide plate 123 are maintained in Figure 12 At this time, the lower buffer port 102 and the upper buffer port 103 will discharge part of the high-pressure gas, and since the lower buffer port 102 and the upper buffer port 103 are located at different positions, the phenomenon of local high pressure inside the cabinet 100 is reduced. Then, the pressure relief cover plate 101 is pushed open by the high-pressure gas.

[0063] At the same time, the high pressure inside the cabinet 100 will force the driving member to work, at this time, the driving member drives the clamping plate 135 to rotate, at this time, the clamping plate 135 is separated from the top end of the piston cylinder 131, then the reset spring 133 rebounds to drive the piston 132 to move downward, the piston 132 moves downward to extrude the air in the piston cylinder 131 into the exhaust pipe 134, and then the air is discharged through the exhaust pipe 134.

[0064] Reference Figure 12 The exhaust port of the exhaust pipe 134 is narrowed, and under the elastic action of the reset spring 133, the gas in the exhaust pipe 134 and the piston cylinder 131 is compressed, thereby accelerating the flow rate of the gas discharged from the exhaust port. The gas discharged through the exhaust pipe 134 is parallel to the side wall of the cabinet 100, when the gas flows to the first flow guide plate 113, since the first flow guide plate 113 protrudes from the side wall of the cabinet 100, and the first flow guide plate 113 is inclined outwardly of the cabinet 100, therefore, the gas discharged through the exhaust pipe 134 will enter into the inside of the cabinet 100 under the guidance of the first flow guide plate 113. When the gas flows to the second flow guide plate 123, the gas is quickly discharged through the exhaust pipe 134, when the gas quickly passes through the second flow guide plate 123, a negative pressure will be generated at the second flow guide plate 123, thereby sucking the gas inside the cabinet 100, and the second flow guide plate 123 is inclined downwardly of the inside of the cabinet 100, so that the second flow guide plate 123 plays a guiding role to the gas, helping the high-temperature gas in the middle of the cabinet 100 to be quickly discharged.

[0065] At this time, the gas enters into the inside of the cabinet 100 through the lower buffer port 102, and flows upward, so that part of the gas is discharged through the pressure relief cover plate 101, and another part of the gas is sucked out through the upper buffer port 103, thereby accelerating the discharge of the high-temperature gas inside the cabinet 100.

[0066] It should be understood that the volume of the first buffer flow guide member 110 and the second buffer flow guide member 120 can be set according to the actual size of the cabinet 100. And the number of the first flow guide plate 113 and the second flow guide plate 123 does not need to be consistent with the number in Figure 12 Specifically, the minimum number of the first flow guide plate 113 and the second flow guide plate 123 is 1.

[0067] Embodiment 2, as shown in Figure 13 , this embodiment adjusts the state of the first flow guide plate 113 and the second flow guide plate 123 by changing the opening angle of the limiting groove 141. Taking the second flow guide plate 123 as an example, Figure 13 the left part in Figure 13The right part in the figure is the state of the second flow guide plate 123 in the embodiment 2. In the figure, the opening angle A1 of the limiting slot 141 in the embodiment 1 is greater than the opening angle A2 of the limiting slot 141 in the embodiment 2. That is to say, in the embodiment 2, when the limiting plate 140 abuts against one end of the limiting slot 141, the two adjacent second flow guide plates 123 are in a non-contact state.

[0068] Further referring to Figure 14 , through the design, when the first flow guide plate 113 and the second flow guide plate 123 are both in a free state, it can be found that there is a gap a between the two adjacent first flow guide plates 113 and a gap b between the two adjacent second flow guide plates 123. Moreover, the bottom end of the first flow guide plate 113 and the bottom end of the second flow guide plate 123 are both inclined to the outside of the cabinet 100, which can play a waterproof role. In this way, the first flow guide plate 113 and the second flow guide plate 123 can play a role of assisting the heat dissipation of the cabinet 100.

[0069] In specific work, when high pressure is not generated in the cabinet 100, the lower buffer port 102 and the upper buffer port 103 act as heat dissipation holes, that is, the gas enters the inside of the cabinet 100 through the lower buffer port 102 and then is discharged through the upper buffer port 103, and in this process, the first flow guide plate 113 and the second flow guide plate 123 play a waterproof role. When high pressure is generated in the cabinet 100, part of the high-pressure gas is discharged through the gap a and the gap b, and since the high-pressure gas is generated quickly, the gas will also push the first flow guide plate 113 and the second flow guide plate 123 to rotate to Figure 12 the state in the figure during the discharging process.

[0070] In summary, the first buffer flow guide 110 and the second buffer flow guide 120 can also open the lower buffer port 102 and the upper buffer port 103 in a normal state to achieve heat dissipation of the inside of the cabinet 100. Moreover, the opened first buffer flow guide 110 and the second buffer flow guide 120 can block the water source from the outside, achieving a waterproof effect.

[0071] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An emergency pressure relief intelligent lock switch cabinet, comprising a cabinet body (100) and a pressure relief cover plate (101) arranged at the top of the cabinet body (100), characterized in that: Further comprising a buffer flow guide mechanism and a pre-gas collection mechanism (130), wherein: The pre-gas collection mechanism (130) is used to blow the pre-collected gas to the buffer flow guide mechanism when high pressure occurs inside the cabinet body (100); The buffer flow guide mechanism is located in the lower buffer port (102) and the upper buffer port (103) arranged on the side wall of the cabinet body (100), and comprises a plurality of flow guide plates arranged in a longitudinal manner, wherein the flow guide plates have a free state and a pressure state; In the free state, the plurality of flow guide plates are in contact with each other to close the lower buffer port (102) and the upper buffer port (103); in the pressure state, the plurality of flow guide plates are separated from each other to open the lower buffer port (102) and the upper buffer port (103), and the flow guide plates guide the gas at the lower buffer port (102) and the upper buffer port (103) to enter the inside of the cabinet body (100) through the lower buffer port (102) and then be discharged through the upper buffer port (103); The pressure state is the state of the flow guide plates under the action of high-pressure gas inside the cabinet body (100); In the pressure state, the bottom end of the flow guide plate located in the lower buffer port (102) protrudes outside the cabinet body (100) to guide the gas at the lower buffer port (102) into the inside of the cabinet body (100); the bottom end of the flow guide plate located in the upper buffer port (103) protrudes inside the cabinet body (100) to cooperate with the gas at the upper buffer port (103) to exhaust the gas inside the cabinet body (100), so that the gas inside the cabinet body (100) forms a convection.

2. The emergency pressure relief intelligent lock switch cabinet according to claim 1, characterized in that: The direction in which the pre-gas collection mechanism (130) blows out the gas is parallel to the side wall of the cabinet body (100).

3. The emergency pressure relief intelligent lock switch cabinet according to claim 1, characterized in that: The buffer flow guide mechanism further comprises a mounting frame and a plurality of rotating shafts rotatably arranged in the mounting frame, wherein the mounting frame is arranged in the lower buffer port (102) and the upper buffer port (103); and the plurality of rotating shafts are arranged in a longitudinal manner; One end of the flow guide plate corresponding to the lower buffer port (102) is fixedly connected to the corresponding rotating shaft; The flow guide plate corresponding to the upper buffer port (103) is slidably penetrated through the corresponding rotating shaft; Further comprising a limiting piece for maintaining the flow guide plate in the pressure state.

4. The emergency pressure relief intelligent lock switch cabinet according to claim 3, characterized in that: Both ends of the flow guide plate corresponding to the upper buffer port (103) are bent to form protrusions on one side.

5. The emergency pressure relief intelligent lock switch cabinet according to claim 3, characterized in that: The limiting piece comprises a limiting slot (141) and a limiting plate (140) extending into the limiting slot (141), wherein the limiting plate (140) is fixedly arranged on one side of the mounting frame, one end of the rotating shaft protrudes from the side wall of the mounting frame and is located below the limiting plate (140); and the limiting slot (141) is arranged on the outer ring of the rotating shaft; One side of the limiting plate (140) is magnetically attracted to one side of the limiting slot (141) to maintain the flow guide plate in the pressure state.

6. The emergency pressure relief intelligent lock switch cabinet according to claim 1, characterized in that: The pre-gas collection mechanism (130) comprises a piston cylinder (131) fixedly arranged on the side wall of the cabinet body (100) and a piston (132) slidably arranged in the piston cylinder (131), wherein a return spring (133) is arranged between the piston (132) and the piston cylinder (131); The bottom of the piston cylinder (131) is communicated with an exhaust pipe (134) arranged below the buffer flow guide mechanism, and the exhaust port of the exhaust pipe (134) is parallel to the outside of the cabinet body (100); The top of the piston (132) is eccentrically rotatably provided with a clamping plate (135), which is in a rotating manner to fall on or be separated from the top end of the piston cylinder (131); Further comprising a driving member for driving the clamping plate (135) to rotate.

7. The emergency pressure relief intelligent lock switch cabinet according to claim 6, characterized in that: The driving member comprises a cylinder for pushing the clamping plate (135) to rotate, and the cylinder is connected with a pressure sensor arranged in the cabinet body (100).

8. The emergency pressure relief intelligent lock switch cabinet according to claim 6, characterized in that: The driving member comprises a push plate (136) which is slidingly arranged in a sliding groove arranged in the side wall of the cabinet body (100), and one side of the push plate (136) is abutted against the side wall of the clamping plate (135) through a push rod arranged thereon.

9. The emergency pressure relief intelligent switchgear cabinet of claim 5, wherein: When the limiting plate (140) abuts against one end of the limiting groove (141), the adjacent two flow guide plates are in a non-contact state.

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