An electrical cabinet with automatic power-off and fire-extinguishing function

Abstract

The present invention discloses an electrical cabinet with automatic power-off and fire-extinguishing function, which relates to the field of fire protection technology for electrical cabinets. The cabinet comprises an electrical cabinet body, a fire detector provided on the electrical cabinet body, a heat dissipation box provided on the electrical cabinet body, an output air duct connected to the interior and exterior of the electrical cabinet body, circulation air ducts connected to the output air ducts symmetrically provided on the upper and lower sides of the heat dissipation box body, a fire extinguishing box provided on the side of the two circulation air ducts away from the heat dissipation box body, a fire extinguishing box provided with a fire extinguishing air duct connected to the circulation air duct, a cooling fan provided inside the output air duct, and a symmetrical pivotally connected closing plate inside the output air duct, the closing plate being able to rotate about the pivot connection as the axis to form a first closed state and a second closed state. The present invention can drive the closing plate to move to the second closed state when the fire detector detects a fire, and transport dry powder into the interior of the electrical cabinet body to quickly extinguish the fire inside the electrical cabinet body.

Description

Technical Field

[0001] The invention relates to the technical field of fire protection of electrical cabinets, in particular to an electrical cabinet capable of automatically cutting off power and extinguishing fire. Background Art

[0002] The electrical cabinet is made of steel and is used to protect the normal operation of components, making it easy to divide or classify the power supply.

[0003] However, it was found during use that when a fire occurs inside the existing electrical cabinet, although the power can be automatically cut off, the fire cannot be extinguished in time, resulting in a large range of electrical components being burned, causing very large economic losses, and affecting the efficiency of maintenance, resulting in the electrical cabinet being unable to supply power in time. Summary of the Invention

[0004] The purpose of the present invention is to provide an electrical cabinet with automatic power-off and fire-extinguishing function, so as to solve the problem in the above-mentioned background technology that when a fire occurs inside the existing electrical cabinet, the fire cannot be extinguished in time, resulting in large-scale burning of electrical components, causing very large economic losses, and affecting the efficiency of maintenance, resulting in the electrical cabinet being unable to supply power in time.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides an electrical cabinet with automatic power-off and fire-extinguishing function, comprising an electrical cabinet body, a fire detector provided on the electrical cabinet body, a heat dissipation box provided on the electrical cabinet body, the heat dissipation box having an output air duct communicating with the interior and exterior of the electrical cabinet body, circulation air ducts communicating with the output air ducts symmetrically provided on the upper and lower sides of the heat dissipation box body, a fire extinguishing box provided on a side of the two circulation air ducts away from the heat dissipation box body, the fire extinguishing box having a fire extinguishing air duct communicating with the circulation air duct, a cooling fan provided inside the output air duct, and a closing plate symmetrically pivotally connected inside the output air duct, the closing plate being capable of rotating about the pivot connection as an axis to form a first closed state and a second closed state, wherein:

[0007] In the first closed state, the closing plate blocks the connection between the output air duct and the circulating air duct, and allows the output airflow of the cooling fan to be output to the outside of the electrical cabinet body through the output air duct;

[0008] In the second closed state, the closing plate blocks the output air duct, and allows the output airflow of the cooling fan to be output to the interior of the electrical cabinet body through the circulating air duct and the fire extinguishing air duct.

[0009] Furthermore, a dry powder rack is movably provided inside the fire extinguishing box, a support frame is further provided inside the fire extinguishing box and is located directly below the dry powder rack, a dry powder cartridge is mounted on the dry powder rack, a sealing film is provided at the bottom of the dry powder cartridge, through holes adapted to fit the sealing film are provided on both the dry powder rack and the support frame, a discharge chute is symmetrically provided on the inner wall of the through hole of the support frame, a discharge plate is movably provided inside the discharge chute, and discharge pins are provided on the discharge plate in a linear array;

[0010] Linkage boxes are provided on the left and right sides of the heat dissipation box, the circulating air duct and the fire extinguishing box. Limiting blocks that are slidably inserted into the inside of the linkage box are provided on both sides of the dry powder rack. A driving telescopic rod for driving the limiting blocks to move in the vertical direction is also provided inside the linkage box. The driving stroke of the driving telescopic rod is the distance between the dry powder rack and the support frame.

[0011] Furthermore, the unloading plate is symmetrically provided with linkage rods which are slidably inserted into the interior of the linkage box, and linkage wheels are installed on the ports of the linkage rods located inside the linkage box;

[0012] The internal shaft of the linkage box is connected to a driving cam which is closely connected between the two linkage wheels.

[0013] Furthermore, a reset frame sleeved on the linkage rod is provided inside the linkage box body, a reset block is provided on the outer wall of the linkage rod located inside the reset frame, and a reset spring is provided between the reset block and the inner wall of the reset frame.

[0014] Furthermore, the fire extinguishing air duct is pivotally connected to a driving fan blade, and the shafts at both ends of the driving fan blade extend into the interior of the linkage box;

[0015] The heat dissipation box body is further provided with an opening located between the discharge plate and the output air duct, and the internal pivot of the linkage box body is connected to a linkage brush stick located at the same level as the opening, and the shafts at both ends of the linkage brush stick extend into the interior of the linkage box body;

[0016] A cam connecting seat is also provided on the driving cam, and a linkage belt is connected between the cam connecting seat and the shaft rod of the linkage brush stick, and between the shaft rod of the linkage brush stick and the shaft rod of the driving fan blade.

[0017] Furthermore, both sides of the closing plate are provided with closing rods which are slidably inserted into the interior of the linkage box;

[0018] The interior of the linkage box is also provided with a connecting rod connected between the two limit blocks, and a shift block is installed on the connecting rod, and an upper shift rod is provided on the top of the shift block, and a shift gear plate is also provided on the shift block. A linkage gear plate is also movably provided on the inner wall of the linkage box, and a lower shift rod is provided on the linkage gear plate. The internal shaft of the linkage box is connected to a linkage gear meshingly connected between the shift gear plate and the linkage gear plate, and the upper shift rod and the lower shift rod are respectively connected to the opposite sides of the two closing rods.

[0019] Furthermore, a spiral spring is provided at the pivot connection of the closing plate.

[0020] Furthermore, a support net is provided on the inner wall of the output air duct, and the support net is assembled to be parallel to and abut against the closing plate in the second closed state.

[0021] Furthermore, the input port of the output air duct, the output port of the fire extinguishing air duct and the opening are all provided with protective nets, and the output port of the output air duct is provided with a filter net.

[0022] Furthermore, a collection box is symmetrically arranged at the bottom of the electrical cabinet body, and a collection telescopic rod is arranged between the collection box and the linkage box.

[0023] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0024] The present invention can drive the closing plate to move to the second closing state when the fire detector detects a fire. At this time, the airflow output by the cooling fan will be circulated to the interior of the electrical cabinet body through the circulating air duct and the fire extinguishing air duct, and the dry powder will be transported to the interior of the electrical cabinet body. At the same time, the symmetrically arranged circulating air duct can make the airflow output to the interior of the airflow electrical cabinet body form a double-loop circulation, further improving the efficiency of dry powder diffusion, and can also effectively prevent the dry powder from being deposited inside the electrical cabinet body and affecting the fire extinguishing effect. Since the electrical cabinet body is in a closed state with the outside world at this time, it will not cause the loss of dry powder and prevent air from flowing into the interior of the electrical cabinet body, so that the diffused dry powder can quickly extinguish the fire inside the electrical cabinet body and prevent the fire from reigniting. After the fire detector detects that the fire is extinguished, the dry powder carried in the circulating airflow can be quickly collected, which is convenient for the maintenance work of maintenance personnel, improves the maintenance efficiency, and can reduce the environmental pollution caused by the diffusion of dry powder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0026] In the attached figure:

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0028] Figure 2 It is a schematic diagram of the side cross-sectional structure of the present invention;

[0029] Figure 3 This is a schematic diagram of the partial connection structure between the dry powder cartridge and the connecting rod of the present invention;

[0030] Figure 4 This is a schematic diagram of the partial connection structure of the dry powder rack, dry powder cartridge and driving fan blades of the present invention;

[0031] Figure 5 This is a schematic diagram of the partial connection structure of the driving fan blade, the linked brush roller and the discharge plate of the present invention;

[0032] Figure 6 This is a schematic diagram of the partial connection structure between the linkage rod and the reset frame of the present invention;

[0033] Figure 7 This is a schematic diagram of the partial connection structure of the connecting rod, the upper toggle rod and the lower toggle rod of the present invention;

[0034] Figure 8 This is a schematic diagram of the partial connection structure between the collecting box and the telescopic rod of the present invention.

[0035] In the picture:

[0036] 100. Electrical cabinet body; 101. Fire detector; 110. Heat dissipation box; 111. Output air duct; 112. Cooling fan; 113. Closing plate; 114. Protective net; 115. Filter; 120. Circulating air duct; 130. Fire extinguishing box; 131. Fire extinguishing air duct; 132. Dry powder rack; 133. Support frame; 134. Dry powder cartridge; 135. Sealing film; 136. Discharge plate; 137. Discharge pin; 140. Linkage box; 141. Limiting plug; 142. Drive telescopic rod; 143. Linkage rod; 144. Linkage wheel; 145. Driving cam; 146. Reset frame; 147. Reset block; 148. Reset spring; 149. Driving blade; 150. Linkage brush stick; 151. Cam connecting seat; 152. Linkage belt; 153. Closing rod; 154. Connecting rod; 155. Shift block; 156. Upper shift rod; 157. Shift gear plate; 158. Linkage gear plate; 159. Lower shift rod; 160. Linkage gear; 161. Volute spring; 162. Support net; 170. Collection box; 171. Collection telescopic rod. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0038] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0040] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to express a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0041] Furthermore, the terms "installed," "disposed," "provided with," "connected," "connected," and "socketed" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or electrical connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0042] See also Figures 1 to 8The present invention provides an electrical cabinet with automatic power-off and fire-extinguishing function, comprising an electrical cabinet body 100, a fire detector 101 provided on the electrical cabinet body 100, a heat dissipation box 110 provided on the electrical cabinet body 100, the heat dissipation box 110 having an output air duct 111 communicating with the interior and exterior of the electrical cabinet body 100, circulation air ducts 120 communicating with the output air ducts 111 symmetrically provided on the upper and lower sides of the heat dissipation box 110, a fire extinguishing box 130 provided on the side of the two circulation air ducts 120 away from the heat dissipation box 110, the fire extinguishing box 130 having a fire extinguishing air duct 131 communicating with the circulation air duct 120, a cooling fan 112 provided inside the output air duct 111, and a closing plate 113 symmetrically pivotally connected inside the output air duct 111, the closing plate 113 being able to rotate about the pivot connection as the axis to form a first closed state and a second closed state, wherein:

[0043] In the first closed state, the closing plate 113 blocks the connection between the output air duct 111 and the circulating air duct 120, and allows the output airflow of the cooling fan 112 to be output to the outside of the electrical cabinet body 100 through the output air duct 111;

[0044] When the closing plate 113 is in the first closing state, the cooling fan 112 can discharge the high temperature generated by the electrical components inside the electrical cabinet body 100, thereby preventing the electrical components inside the electrical cabinet body 100 from being damaged by being in a high temperature environment for a long time.

[0045] In the second closed state, the closing plate 113 blocks the output air duct 111 and allows the output airflow of the cooling fan 112 to be output to the interior of the electrical cabinet body 100 through the circulating air duct 120 and the fire extinguishing air duct 131;

[0046] When the closing plate 113 is in the second closing state, the electrical cabinet body 100 will remain in the closed state, that is, the amount of oxygen inside the electrical cabinet body 100 will gradually decrease under fire conditions, which can effectively prevent the fire from spreading.

[0047] In order to quickly extinguish the fire when the electrical cabinet body 100 remains in a closed state, a dry powder rack 132 is movably provided inside the fire extinguishing box 130, and a support frame 133 is also provided inside the fire extinguishing box 130, which is located directly below the dry powder rack 132. A dry powder cylinder 134 is installed on the dry powder rack 132, and a sealing film 135 is provided at the bottom of the dry powder cylinder 134. Through holes adapted to the sealing film 135 are provided on the dry powder rack 132 and the support frame 133. A discharge trough is symmetrically provided on the inner wall of the through hole of the support frame 133, and a discharge plate 136 is movably provided inside the discharge trough. Discharge nails 137 are provided on the discharge plate 136 in a linear array; a linkage box 140 is provided on the left and right sides of the heat dissipation box 110, the circulating air duct 120 and the fire extinguishing box 130, and both sides of the dry powder rack 132 are provided with a plurality of Both are provided with a limit plug 141 that is slidably plugged into the inside of the linkage box 140. The linkage box 140 is also provided with a driving telescopic rod 142 for driving the limit plug 141 to move in the vertical direction. The driving stroke of the driving telescopic rod 142 is the distance between the dry powder rack 132 and the support rack 133, that is, the dry powder rack 132 drives the dry powder barrel 134 to move toward the direction of the support rack 133 by driving the telescopic rod 142. When the dry powder rack 132 abuts against the support rack 133, the unloading nail 137 provided on the unloading plate 136 can pierce the sealing film 135 at the bottom of the dry powder barrel 134, so that the dry powder inside the dry powder barrel 134 can be sprinkled from the rupture of the sealing film 135 to the through holes opened on the dry powder rack 132 and the support rack 133.

[0048] In order to make the discharge plate 136 open intermittently and allow the dry powder to intermittently pass through the through holes opened on the dry powder rack 132 and the support frame 133, the discharge plate 136 is symmetrically provided with a linkage rod 143 that is slidably inserted into the inside of the linkage box 140, and a linkage wheel 144 is installed on the port of the linkage rod 143 located inside the linkage box 140; the internal axis of the linkage box 140 is connected to a driving cam 145 that is snugly connected between the two linkage wheels 144, that is, the linkage wheels 144 are driven to intermittently move relative to each other by the driving cam 145, so that the linkage wheel 144 drives the discharge plate 136 connected to the linkage rod 143 to intermittently move relative to each other, and when the raised portion of the driving cam 145 abuts against the linkage wheel 144, the discharge plate 136 can move relative to each other, so that the dry powder can pass through the through holes opened on the dry powder rack 132 and the support frame 133.

[0049] In order to make the unloading plate 136 intermittently closed, the interior of the linkage box body 140 is further provided with a reset frame 146 sleeved on the linkage rod 143, and the linkage rod 143 is provided with a reset block 147 on the outer wall inside the reset frame 146. A reset spring 148 is provided between the reset block 147 and the inner wall of the reset frame 146. When the protrusion of the driving cam 145 abuts against the linkage wheel 144, the linkage wheel 144 will drive the reset block 147 connected to the linkage rod 143 to intermittent relative movement and apply a force to the reset spring 148 to deform it. When the raised portion of the movable cam 145 rotates to a state where it does not abut against the linkage wheel 144, the reset block 147 can drive the discharge plate 136 connected to the linkage rod 143 to move toward each other until they abut against each other under the action of the reset spring 148 to restore the deformation, and block the through hole opened on the support frame 133, so that the dry powder cannot pass through the through hole opened on the support frame 133. By controlling the output amount of the dry powder, the dry powder can be output intermittently and evenly, which can effectively avoid the situation where the instantaneous output of the dry powder is too large, resulting in accumulation and inability to be quickly suspended in the air.

[0050] In order to make the driving cam 145 rotate and transport the dry powder passing through the through holes opened on the dry powder rack 132 and the support frame 133 to the interior of the electrical cabinet body 100, the fire extinguishing air duct 131 is pivotally connected to a driving blade 149, and the shafts at both ends of the driving blade 149 extend to the interior of the linkage box body 140; the heat dissipation box body 110 is also provided with an opening located between the discharge plate 136 and the output air duct 111, and the internal pivot of the linkage box body 140 is connected to a linkage brush stick 150 located at the same horizontal plane as the opening, and the shafts at both ends of the linkage brush stick 150 extend to the interior of the linkage box body 140; the driving cam 145 is also provided with a cam connecting seat 151, and the cam connecting seat 151 and the shaft of the linkage brush stick 150, as well as the shaft of the linkage brush stick 150 and the shaft of the driving blade 149 are all connected with a linkage belt 152, that is, when the closing plate 113 is in the second closed state, The output airflow of the cooling fan 112 is output to the interior of the electrical cabinet body 100 through the circulating air duct 120 and the fire extinguishing air duct 131, and the driving blades 149 are driven to rotate by the airflow passing through the fire extinguishing air duct 131. At the same time, the driving cam 145 and the linkage brush rod 150 are rotated through the linkage belt 152, so that the linkage brush rod 150 can transport the dry powder passing through the through holes opened on the dry powder rack 132 and the support frame 133 to the interior of the electrical cabinet body 100. At the same time, under the intermittent control of the driving cam 145, the dry powder can maintain a continuous and stable output, which can effectively avoid the situation where the instantaneous output of dry powder is too large and causes accumulation, so that the dry powder can be quickly and evenly suspended inside the electrical cabinet body 100, and the fire inside the electrical cabinet body 100 can be quickly extinguished. Since the electrical cabinet body 100 is in a closed state at this time, the fire extinguishing effect of the dry powder can be further improved.

[0051] The cam 156 is engaged with the cam 157 and the cam 158 is engaged with the cam 157 and the cam 158 is engaged with the cam 157. When the dynamic limit plug block 141 causes the dry powder rack 132 to drive the dry powder tube 134 to move in the direction of the support frame 133, the upper toggle rod 156 will be driven to move in the direction of the lower toggle rod 159 through the toggle block 155 on the connecting rod 154. At the same time, the linkage gear 160 connected to the toggle gear plate 157 drives the lower toggle rod 159 on the linkage gear plate 158 to move in the direction of the upper toggle rod 156. When the upper toggle rod 156 and the lower toggle rod 159 move toward each other, the two closing rods 153 can drive the closing plate 113 to rotate synchronously to the first closed state, so that the output airflow of the cooling fan 112 is circulated and output to the interior of the electrical cabinet body 100 through the circulating air duct 120 and the fire extinguishing air duct 131. This can not only make the dry powder quickly fill the interior of the electrical cabinet body 100 to extinguish the fire, but also effectively prevent a large amount of dry powder from naturally accumulating under the action of gravity, affecting the fire extinguishing effect.

[0052] In order to prevent the closing plate 113 from blocking the connection between the output air duct 111 and the circulating air duct 120 when no fire occurs, and to allow the output airflow of the cooling fan 112 to be output to the outside of the electrical cabinet body 100 through the output air duct 111, a spiral spring 161 is provided at the pivot connection of the closing plate 113. The elastic force of the spiral spring 161 is utilized to make the closing plate 113 abut against the connection between the output air duct 111 and the circulating air duct 120, and to make the closing rod 153 abut against the upper toggle rod 156 and the lower toggle rod 159.

[0053] In order to ensure that the closing plate 113 remains stable when it rotates to the first closed state, a support net 162 is further provided on the inner wall of the output air duct 111. The support net 162 is assembled to be parallel to and abut against the closing plate 113 in the second closed state, that is, when the closing plate 113 rotates to the first closed state, it is supported by the support net 162 to maintain stability.

[0054] The input port of the output air duct 111, the output port of the fire extinguishing air duct 131 and the opening are all provided with a protective net 114, and the output port of the output air duct 111 is provided with a filter net 115. The protective net 114 can play a protective role to prevent debris from entering when the electrical components explode. The filter net 115 can play a filtering role for the only connection channel between the electrical cabinet body 100 and the outside world.

[0055] In order to quickly dispose of the dry powder inside the electrical cabinet body 100 after the fire is extinguished, so as to facilitate the maintenance work of the maintenance personnel, a collection box 170 is symmetrically arranged at the bottom of the electrical cabinet body 100, and a collection telescopic rod 171 is arranged between the collection box 170 and the linkage box 140. After the fire detector 101 detects the end of the fire, the collection box 170 is driven by the collection telescopic rod 171 to move to the output port of the output air duct 111, so as to quickly collect the dry powder carried in the circulating airflow.

[0056] It should be added that the fire detector 101, the cooling fan 112, the driving telescopic rod 142 and the collecting telescopic rod 171 are separate circuits, which can be connected to the input terminals of the main control circuit inside the electrical cabinet body 100, or powered by a backup power supply.

[0057] When no fire occurs, the closing plate 113 is in the first closing state, that is, it blocks the connection between the output air duct 111 and the circulating air duct 120. At this time, the cooling fan 112 can output the high-temperature airflow inside the electrical cabinet body 100 through the output air duct 111 to the outside of the electrical cabinet body 100, so as to reduce the temperature inside the electrical cabinet body 100 and protect the electrical components inside the electrical cabinet body 100 from being damaged due to long-term exposure to high-temperature airflow. When the fire detector 101 detects that the electrical components inside the electrical cabinet body 100 are When a fire occurs in the component, a signal can be transmitted to the main control circuit inside the electrical cabinet body 100 to cut off the circuit, and at the same time, the telescopic rod 142 is started to move the dry powder cylinder 134 toward the discharge plate 136, and the sealing film 135 is broken through the discharge nail 137, and the closing plate 113 is driven to move to the second closed state. At this time, the airflow output by the cooling fan 112 is circulated through the circulating air duct 120 and the fire extinguishing air duct 131 to the interior of the electrical cabinet body 100, and drives the driving blades 149 inside the fire extinguishing air duct 131 to rotate. When the driving blade 149 rotates, it can synchronously drive the discharge plate 136 to intermittently reciprocate and drive the linkage brush stick 150 to rotate. When the discharge plate 136 intermittently reciprocates, the dry powder inside the dry powder cylinder 134 can be evenly dropped on the linkage brush stick 150. At the same time, the discharge nail 137 can effectively prevent the dry powder from piling up and being unable to fall. When the linkage brush stick 150 rotates, the dry powder can be transported to the interior of the electrical cabinet body 100, and the airflow output through the fire extinguishing air duct 131 quickly diffuses into the interior of the electrical cabinet body 100. At the same time, the symmetrically arranged circulating air duct 120 can make the air flow output to the inside of the airflow electrical cabinet body 100 form a double-loop circulation, further improving the efficiency of dry powder diffusion, and can also effectively prevent dry powder from being deposited inside the electrical cabinet body 100 and affecting the fire extinguishing effect. Since the electrical cabinet body 100 is in a closed state with the outside world at this time, it will not cause the loss of dry powder and prevent air from flowing into the interior of the electrical cabinet body 100, so that the diffused dry powder can quickly extinguish the fire inside the electrical cabinet body 100 and prevent the fire from re-igniting.

[0058] When the fire detector 101 detects that the fire is extinguished, the collection box 170 can be driven to move to the output port of the output air duct 111 through the collection telescopic rod 171, so as to quickly collect the dry powder carried in the circulating air flow, facilitate the maintenance work of maintenance personnel, improve the efficiency of maintenance, and at the same time reduce the environmental pollution caused by the spread of dry powder.

[0059] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. An electrical cabinet with automatic power-off and fire-extinguishing function, comprising an electrical cabinet body (100), characterized in that: The electrical cabinet body (100) is provided with a fire detector (101), and the electrical cabinet body (100) is also provided with a heat dissipation box (110), the heat dissipation box (110) having an output air duct (111) communicating with the interior and exterior of the electrical cabinet body (100), and circulating air ducts (120) communicating with the output air duct (111) are symmetrically provided on the upper and lower sides of the heat dissipation box (110), and the two circulating air ducts (120) are away from the heat dissipation box. A fire extinguishing box (130) is provided on one side of the heat box (110), and the fire extinguishing box (130) has a fire extinguishing air duct (131) connected to the circulating air duct (120). A cooling fan (112) is provided inside the output air duct (111), and a closing plate (113) is symmetrically pivotally connected inside the output air duct (111). The closing plate (113) can rotate around the pivot connection as an axis to form a first closed state and a second closed state, wherein: In a first closed state, the closing plate (113) blocks the connection between the output air duct (111) and the circulating air duct (120), and allows the output airflow of the cooling fan (112) to be output to the outside of the electrical cabinet body (100) through the output air duct (111); In the second closed state, the closing plate (113) blocks the output air duct (111), and allows the output airflow of the cooling fan (112) to be output to the interior of the electrical cabinet body (100) through the circulating air duct (120) and the fire extinguishing air duct (131); A dry powder rack (132) is movably provided inside the fire extinguishing box (130), and a support frame (133) is also provided inside the fire extinguishing box (130) and is located directly below the dry powder rack (132). A dry powder cartridge (134) is mounted on the dry powder rack (132), and a sealing film (135) is provided at the bottom of the dry powder cartridge (134). Through holes adapted to the sealing film (135) are provided on both the dry powder rack (132) and the support frame (133), and a discharge trough is symmetrically provided on the inner wall of the through hole of the support frame (133). A discharge plate (136) is movably provided inside the discharge trough, and discharge pins (137) are provided on the discharge plate (136) in a linear array. Linkage boxes (140) are provided on the left and right sides of the heat dissipation box (110), the circulating air duct (120) and the fire extinguishing box (130); The unloading plate (136) is symmetrically provided with a linkage rod (143) that is slidably inserted into the interior of the linkage box (140); a linkage wheel (144) is installed on the end of the linkage rod (143) located inside the linkage box (140); the internal axis of the linkage box (140) is connected to a driving cam (145) that is closely connected between the two linkage wheels (144); The fire extinguishing air duct (131) is pivotally connected to a driving blade (149), and the shafts at both ends of the driving blade (149) extend into the interior of the linkage box (140); the heat dissipation box (110) is also provided with an opening located between the discharge plate (136) and the output air duct (111), and the internal pivot of the linkage box (140) is connected to a linkage brush stick (150) located on the same horizontal plane as the opening, and the shafts at both ends of the linkage brush stick (150) extend into the interior of the linkage box (140); the driving cam (145) is also provided with a cam connecting seat (151), and a linkage belt (152) is connected between the cam connecting seat (151) and the shaft of the linkage brush stick (150), and between the shaft of the linkage brush stick (150) and the shaft of the driving blade (149); The airflow passing through the fire extinguishing air duct (131) drives the driving blade (149) to rotate, and at the same time, the driving cam (145) and the linkage brush stick (150) are rotated through the linkage belt (152), so that the linkage brush stick (150) can transport the dry powder through the through holes opened on the dry powder rack (132) and the support rack (133) to the inside of the electrical cabinet body (100).

2. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 1, characterized in that: Both sides of the dry powder rack (132) are provided with limiting plugs (141) that are slidably plugged into the interior of the linkage box (140). The linkage box (140) is also provided with a driving telescopic rod (142) for driving the limiting plug (141) to move in a vertical direction. The driving stroke of the driving telescopic rod (142) is the distance between the dry powder rack (132) and the support frame (133).

3. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 2, characterized in that: A reset frame (146) sleeved on the linkage rod (143) is further provided inside the linkage box (140); a reset block (147) is provided on the outer wall of the linkage rod (143) located inside the reset frame (146); and a reset spring (148) is provided between the reset block (147) and the inner wall of the reset frame (146).

4. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 3, characterized in that: Both sides of the closing plate (113) are provided with closing rods (153) that are slidably inserted into the interior of the linkage box (140); The linkage box (140) is further provided with a connecting rod (154) connected between the two limiting plug blocks (141), a shift block (155) is installed on the connecting rod (154), an upper shift rod (156) is provided on the top of the shift block (155), and a shift tooth plate (157) is also provided on the shift block (155). A linkage tooth plate (158) is also movably provided on the inner wall of the linkage box (140), and a lower shift rod (159) is provided on the linkage tooth plate (158). The internal axis of the linkage box (140) is connected to a linkage gear (160) meshedly connected between the shift tooth plate (157) and the linkage tooth plate (158), and the upper shift rod (156) and the lower shift rod (159) are respectively connected to the opposite sides of the two closing rods (153).

5. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 1, characterized in that: A volute spring (161) is provided at the pivot connection of the closing plate (113).

6. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 1, characterized in that: A support net (162) is also provided on the inner wall of the output air duct (111), and the support net (162) is assembled to be parallel to and abut against the closing plate (113) in the second closed state.

7. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 3, characterized in that: The input port of the output air duct (111), the output port of the fire extinguishing air duct (131), and the opening are all provided with a protective net (114), and the output port of the output air duct (111) is provided with a filter net (115).

8. The electrical cabinet with automatic power-off and fire-extinguishing function according to claim 2, characterized in that: A collection box (170) is symmetrically provided at the bottom of the electrical cabinet body (100), and a collection telescopic rod (171) is provided between the collection box (170) and the linkage box (140).

Images