High-security PDU

Abstract

The invention relates to the technical field of communication equipment, and particularly discloses a high-safety PDU which comprises a case, a liquid storage box, a heat dissipation box, connectors and a female end, the liquid storage box is arranged on the side wall of the case and is close to the bottom of the case, the heat dissipation box and the connectors are arranged on the case, the connectors are provided with male ends, the male ends are arranged on the connectors, and the female end is connected with the liquid storage box. The female end of the connecting line is inserted into the male end of the connector in a matched mode to be used for signal transmission, a protection ring is fixedly arranged at a port of the male end, an air bag is arranged in the protection ring in a matched mode and is in a circular ring shape, and the female end of the connecting line can penetrate through a center hole of the air bag to be inserted into the male end. The insulating oil in the liquid storage tank enters the heat dissipation tank through the communicating pipe, the insulating oil flowing through the communicating pipe enters the liquid collecting pipe through the drainage pipe, and the air bag bulges, so that the male end of the connector is blocked, dust and water are prevented from entering the male end, and safety protection is performed on connection of the connector.

Description

Technical Field

[0001] The present invention relates to the technical field of communication equipment, and in particular to a high-security PDU. Background Art

[0002] A communication cabinet is a cabinet used to store communication equipment, generally made of steel or aluminum plates. The main function of the cabinet is to provide protection for the communication equipment stored and shield electromagnetic interference. It is usually used in communication rooms, outdoors, etc. Various styles of cabinets can be seen in major rooms and outdoors. Today's society has become a networked society, and the demand for communication equipment is increasing day by day. With the continuous development and breakthroughs in the communications industry, the use of cabinets is increasing. Various communication equipment is placed in the cabinet. When the connector of the existing communication cabinet is connected, the female end is directly connected to the male end, which is prone to loose connection. Moisture and dust can easily enter the male end of the connector, affecting the safety of the communication cabinet. For this reason, a high-security communication cabinet is needed. Summary of the invention

[0003] In order to solve the deficiencies of the prior art, an object of the present invention is to provide a high-security PDU.

[0004] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0005] A high-security PDU, comprising:

[0006] A chassis, a liquid storage tank, a heat sink, a connector, and a female end. The liquid storage tank is arranged at the side wall of the chassis and close to the bottom of the chassis. The heat sink and the connector are arranged on the chassis. There are multiple connectors. A male end is arranged on the connector. There are multiple male ends. The female end of the connecting line is matched and plugged into the male end of the connector for signal transmission. A protective ring is fixedly arranged at the port of the male end. An air bag is matched and arranged inside the protective ring. The air bag is ring-shaped. The female end of the connecting line can pass through the center hole of the air bag and be plugged into the male end. Insulating oil is stored in the liquid storage tank. The liquid storage tank and the heat sink are connected by a connecting pipe. Two connecting pipes are provided and arranged oppositely. A pump body and a valve are provided at the connection between the liquid storage tank and the connecting pipe. A liquid collecting pipe is provided on the wall of the chassis. The liquid collecting pipe and the air bag are connected by a mainstream pipe. The liquid collecting pipe and the connecting pipe are connected by a drainage pipe. A protective mechanism is provided on the wall of the chassis. There are multiple protective mechanisms and they correspond one to one to the multiple male ends.

[0007] As a further improvement of the present technical solution, the protective mechanism includes a collection box and a trigger assembly. The collection box is arranged on the wall of the chassis. The collection box is a rectangular shell with a closed top and an open bottom. A support plate is horizontally fixed at the bottom opening of the collection box. A shift plate is horizontally matched in the collection box. A guide rod is vertically arranged at the bottom of the shift plate. The bottom of the guide rod passes through the plate surface of the support plate and is horizontally connected to a pressure plate one. The end of the pressure plate one extends horizontally and extends out of the bottom of the collection box. A spring one is sleeved on the guide rod. One end of the spring one contacts the bottom of the shift plate, and the other end of the spring one contacts the plate surface of the support plate. The trigger assembly is arranged on the wall of the collection box. The trigger assembly is used to trigger the pressure plate to move down.

[0008] As a further improvement of the present technical solution, the trigger assembly includes a push rod, a second pressure plate, a mounting block, a guide plate, and a baffle. The mounting block is fixed to the wall of the collection box, the second pressure plate is above the mounting block, the second pressure plate is horizontally arranged, the top of the push rod is fixedly connected to the bottom of the second pressure plate, the bottom of the push rod extends vertically downward through the plate surface of the mounting block, two push rods are provided and are arranged in parallel, a second spring is sleeved on the push rod, one end of the second spring contacts the bottom of the second pressure plate, and the other end of the second spring contacts the top of the mounting block, the bottom of the push rod is close to the first pressure plate, the baffle is vertically arranged on one side of the second pressure plate, the baffle and the second pressure plate are connected by a guide plate, and the guide plate is arranged at an angle.

[0009] As a further improvement of the present technical solution, a conversion assembly is provided on the top of the collecting box, and the conversion assembly includes a support plate, a mounting seat, a guide column 1, a mounting plate 1, and a mounting plate 2. The support plate is arranged on the top of the collecting box, and the mounting seat is on one side of the support plate. One end of the guide column 1 is connected to the wall of the mounting seat, and the other end of the guide column 1 passes through the plate surface of the support plate and is provided with a baffle. Two guide columns 1 are provided and are arranged in parallel. A spring 3 is sleeved on the guide column 1, one end of the spring 3 contacts the plate surface of the support plate, and the other end of the spring 3 contacts the baffle at the end of the guide column 1. The mounting plate 1 and the mounting plate 2 are fixedly arranged at the end of the mounting seat, and the mounting plate 1 and the mounting plate 2 are arranged in parallel. The wall of the mounting plate 2 is horizontally fixed with a guide column. In the initial state, the guide column is at the bottom of the guide plate and close to the pressure plate 2, and the ends of the mounting plate 1 and the mounting plate 2 are close to the mainstream pipe.

[0010] As a further improvement of the technical solution, an opening and closing assembly is arranged between the mounting plate 1 and the mounting plate 2, and the opening and closing assembly is close to the ends of the mounting plate 1 and the mounting plate 2. The opening and closing assembly includes a clamping plate 1, a guide column 2, a clamping plate 2, and a guide column 3. The clamping plate 1 and the clamping plate 2 are located between the mounting plate 1 and the mounting plate 2, and the clamping plate 1 and the clamping plate 2 are arranged in parallel. One end of the guide column 2 is fixedly connected to the plate surface of the clamping plate 1, and the other end of the guide column 2 passes through the plate surface of the mounting plate 1 and is provided with a baffle. A spring 4 is sleeved on the guide column 2, and one end of the spring 4 contacts the plate surface of the mounting plate 1. The other end of spring four contacts with the plate surface of clamp one, one end of guide column three is fixedly connected with the plate surface of clamp two, the other end of guide column three passes through the plate surface of mounting plate two and is provided with a baffle, spring five is sleeved on guide column three, one end of spring five contacts with the plate surface of clamp two, the other end of spring five contacts with the plate surface of mounting plate two, the collecting box is connected with the bottom of the airbag through a shunt pipe, the shunt pipe is close to the mainstream pipe, both the mainstream pipe and the shunt pipe are made of metal hoses, in the initial state, clamp plate one and clamp plate two clamp the shunt pipe, and the shunt pipe is in a closed state.

[0011] As a further improvement of the technical solution, a second pump body is provided on the liquid storage tank.

[0012] As a further improvement of the technical solution, the structures of the first and second clamps are the same, and the two ends of the first and second clamps are at obtuse angles, which is convenient for the displacement and clamping of the first and second clamps.

[0013] Compared with the prior art, the present invention has the following progress and advantages: during the use of the present invention, the pump body and the valve are opened, the insulating oil in the liquid storage tank enters the heat dissipation box through the connecting pipe, the insulating oil flowing through the connecting pipe enters the liquid collecting pipe through the drainage pipe, and the airbag swells, thereby blocking the male end of the connector to prevent dust and water from entering the male end, thereby providing safety protection for the connection of the connector;

[0014] When the female end of the connecting wire needs to be plugged into the male end, the second pressure plate is pressed, the airbag shrinks, and then the female end of the connecting wire is inserted into the male end through the center hole of the airbag, and then the pressure on the second pressure plate is canceled, and the airbag swells again, thereby wrapping and protecting the female end of the connecting wire to prevent the female end of the connecting wire from loosening, thereby improving the safety of the communication cabinet;

[0015] This is convenient when all the female ends of the connecting wires are unplugged. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the protection mechanism of the present invention.

[0019] Figure 3 It is a schematic diagram of the coordination of the trigger component, the conversion component and the opening and closing component of the present invention.

[0020] Figure 4 It is a schematic diagram of the trigger component of the present invention.

[0021] Figure 5 Schematic diagram of the conversion component of the present invention.

[0022] Figure 6 It is a schematic diagram of the installation of the shift plate of the present invention.

[0023] Figure 7 It is a schematic diagram of the cooperation between the first splint and the second splint of the present invention.

[0024] The figure shows:

[0025] 10. Chassis; 110. Liquid storage tank; 120. Heat sink; 130. Connector; 131. Male end; 132. Protective ring; 133. Air bag; 134. Main flow pipe; 135. Diverter pipe; 140. Female end; 150. Connecting pipe; 160. Liquid collecting pipe;

[0026] 20. Protection mechanism; 210. Collection box; 211. Support plate; 212. Shift plate; 213. Guide rod; 214. Pressure plate one; 220. Trigger assembly; 221. Push rod; 222. Pressure plate two; 223. Mounting block; 224. Guide plate; 225. Baffle; 230. Conversion assembly; 231. Support plate; 232. Mounting seat; 233. Guide column one; 234. Mounting plate one; 235. Mounting plate two; 236. Guide column; 240. Opening and closing assembly; 241. Clamp one; 242. Guide column two; 243. Clamp two; 244. Guide column three. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0028] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] like Figure 1-Figure 7 As shown, a high-security PDU includes:

[0032] The chassis 10, the liquid storage tank 110, the heat dissipation box 120, the connector 130, and the female end 140. The liquid storage tank 110 is arranged at the side wall of the chassis 10 and close to the bottom of the chassis 10. The heat dissipation box 120 and the connector 130 are arranged on the chassis 10. The connector 130 is provided with a plurality of male ends 131. The male ends 131 are provided with a plurality of male ends. The female end 140 of the connecting line is matched and plugged into the male end 131 of the connector 130 for signal transmission. A protective ring 132 is fixedly provided at the port of the male end 131. An air bag 133 is matched and provided in the protective ring 132. The air bag 133 is in a ring shape. The female end 140 can pass through the center hole of the airbag 133 and be plugged into the male end 131. Insulating oil is stored in the liquid storage tank 110. The liquid storage tank 110 is connected to the heat sink 120 through a connecting pipe 150. Two connecting pipes 150 are provided and arranged opposite to each other. A pump body and a valve are provided at the connection between the liquid storage tank and the connecting pipe. A collecting pipe 160 is provided on the wall of the chassis 10. The collecting pipe 160 is connected to the airbag 133 through the main pipe 134. The collecting pipe 160 is connected to the connecting pipe 150 through a drainage pipe. A protective mechanism 20 is provided on the wall of the chassis 10. There are multiple protective mechanisms 20 and they correspond one-to-one to the multiple male ends 131.

[0033] More specifically, the protection mechanism 20 includes a collection box 210 and a trigger assembly 220. The collection box 210 is arranged on the wall of the chassis 10. The collection box 210 is a rectangular shell with a closed top and an open bottom. A support plate 211 is horizontally fixedly arranged at the bottom opening of the collection box 210. A shift plate 212 is horizontally matched and arranged in the collection box 210. A guide rod 213 is vertically arranged at the bottom of the shift plate 212. The bottom of the guide rod 213 passes through the plate surface of the support plate 211 and is horizontally connected to a pressure plate 214. The end of the pressure plate 214 extends horizontally and extends out of the bottom of the collection box 210. A spring 1 is sleeved on the guide rod 213. One end of the spring 1 contacts the bottom of the shift plate 212, and the other end of the spring 1 contacts the plate surface of the support plate 211. The trigger assembly 220 is arranged on the wall of the collection box 210. The trigger assembly 220 is used to trigger the pressure plate 214 to move downward.

[0034] like Figure 4 As shown, the trigger assembly 220 includes a push rod 221, a pressure plate 222, a mounting block 223, a guide plate 224, and a baffle 225. The mounting block 223 is fixed to the wall of the collection box 210, the pressure plate 222 is above the mounting block 223, the pressure plate 222 is horizontally arranged, the top of the push rod 221 is fixedly connected to the bottom of the pressure plate 222, the bottom of the push rod 221 extends vertically downward through the plate surface of the mounting block 223, two push rods 221 are provided and arranged in parallel, a spring 2 is sleeved on the push rod 221, one end of the spring 2 contacts the bottom of the pressure plate 222, and the other end of the spring 2 contacts the top of the mounting block 223, the bottom of the push rod 221 is close to the pressure plate 1 214, the baffle 225 is vertically arranged on one side of the pressure plate 222, the baffle 225 and the pressure plate 222 are connected by the guide plate 224, and the guide plate 224 is inclined.

[0035] like Figure 5-Figure 6As shown, a conversion assembly 230 is arranged on the top of the collection box 210, and the conversion assembly 230 includes a support plate 231, a mounting seat 232, a guide column 1 233, a mounting plate 1 234, and a mounting plate 235. The support plate 231 is arranged on the top of the collection box 210, and the mounting seat 232 is located on one side of the support plate 231. One end of the guide column 1 233 is connected to the wall of the mounting seat 232, and the other end of the guide column 1 233 passes through the plate surface of the support plate 231 and is provided with a baffle. Two guide columns 1 233 are provided and are arranged in parallel. A guide column 1 233 is sleeved on the guide column 1 There is a spring three, one end of which contacts the plate surface of the support plate 231, and the other end of the spring three contacts the baffle at the end of the guide column 233. The mounting plate 1 234 and the mounting plate 235 are fixedly arranged at the end of the mounting seat 232. The mounting plate 1 234 and the mounting plate 235 are arranged in parallel. The wall of the mounting plate 235 is horizontally fixed with a guide column 236. In the initial state, the guide column 236 is at the bottom of the guide plate 224 and close to the pressure plate 222, and the ends of the mounting plates 1 234 and 235 are close to the mainstream pipe 134.

[0036] More specifically, an opening and closing assembly 240 is provided between the mounting plate 1 234 and the mounting plate 2 235. The opening and closing assembly 240 is close to the ends of the mounting plate 1 234 and the mounting plate 2 235. The opening and closing assembly 240 includes a clamping plate 1 241, a guide column 242, a clamping plate 243, and a guide column 3 244. The clamping plate 1 241 and the clamping plate 243 are located between the mounting plate 1 234 and the mounting plate 2 235. The clamping plate 1 241 and the clamping plate 243 are arranged in parallel. One end of the guide column 242 is fixedly connected to the plate surface of the clamping plate 1 241, and the other end of the guide column 242 passes through the plate surface of the mounting plate 1 234 and is provided with a baffle. A spring 4 is sleeved on the guide column 242, and one end of the spring 4 contacts the plate surface of the mounting plate 1 234. The other end of spring four contacts with the plate surface of clamp plate one 241, one end of guide column three 244 is fixedly connected with the plate surface of clamp plate two 243, the other end of guide column three 244 passes through the plate surface of mounting plate two 235 and is provided with a baffle, guide column three 244 is sleeved with spring five, one end of spring five contacts with the plate surface of clamp plate two 243, the other end of spring five contacts with the plate surface of mounting plate two 235, the collecting box 210 is connected with the bottom of the airbag 133 through the shunt pipe 135, the shunt pipe 135 is close to the mainstream pipe 134, and the mainstream pipe 134 and the shunt pipe 135 are both made of metal hoses, in the initial state, clamp plate one 241 and clamp plate two 243 clamp the shunt pipe 135, and the shunt pipe 135 is in a closed state.

[0037] More specifically, a pump body 2 is disposed on the liquid storage tank 110 .

[0038] More specifically, the structures of the first clamping plate 241 and the second clamping plate 243 are the same, and the two ends of the first clamping plate 241 and the second clamping plate 243 are obtuse angles, which facilitates the displacement and clamping of the first clamping plate 241 and the second clamping plate 243.

[0039] Working principle:

[0040] During use of the present invention, the pump body 1 and the valve are opened, and the insulating oil in the liquid storage tank 110 enters the heat dissipation box 120 through the connecting pipe 150. The insulating oil flowing through the connecting pipe 150 enters the liquid collecting pipe 160 through the drainage pipe, and then enters the air bag 133 through the main pipe 134. The air bag 133 swells, thereby blocking the male end 131 of the connector 130 to prevent dust and water from entering the male end 131. When the female end 140 of the connecting line needs to be plugged into the male end 131, the pressing plate 222 is pressed, and the pressing plate 222 and the guide plate 224 move downward to guide the female end 140 of the connecting line. The guide plate 224 contacts the guide column 236, thereby driving the mounting plate 1 234 and the mounting plate 235 to move toward the direction close to the main flow pipe 134, and the clamping plate 1 241 and the clamping plate 243 move to the main flow pipe 134 and separate from the shunt pipe 135. The clamping plate 1 241 and the clamping plate 243 clamp the main flow pipe 134, thereby closing the main flow pipe 134 and opening the shunt pipe 135. The pressing plate 222 is continuously pressed, and the guide column 236 separates from the guide plate 224 and contacts the plate surface of the baffle plate 225. The bottom of the push rod 221 pushes the pressing plate 1 214 downward, thereby The shift plate 212 is driven to move downward in the collection box 210, and the insulating oil in the airbag 133 enters the collection box 210 through the shunt pipe 135, and the airbag 133 shrinks. Then, the female end 140 of the connecting line is inserted into the male end 131 through the central hole of the airbag 133, and then the pressure on the second pressing plate 222 is cancelled, and the second pressing plate 222, the first mounting plate 234, and the second mounting plate 235 are reset, thereby driving the first clamping plate 241 and the second clamping plate 243 to reset, and the first clamping plate 241 and the second clamping plate 243 cancel the clamping of the main pipe 134 and clamp the shunt pipe 135. The flow tube 134 is in a flowing state, and the shunt tube 135 is in a closed state. The insulating oil in the liquid storage tank 110 can enter the airbag 133 through the main flow tube 134, and the airbag 133 swells again, thereby wrapping and protecting the female end 140 of the connecting line to prevent the female end 140 of the connecting line from loosening, thereby improving the safety of the communication cabinet. When it is necessary to unplug all the female ends 140 of the connecting lines, close the pump body 1 and the valve, and open the pump body 2, so as to extract the insulating oil in all the airbags 133, and the airbag 133 shrinks, which makes it easy to unplug the female end 140 of the connecting line.

[0041] It should be noted that the above specific implementations are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art should understand that various modifications, equivalent substitutions, changes, etc. can be made to the present invention. However, as long as these changes do not deviate from the spirit of the present invention, they should be within the scope of protection of the present invention. In addition, some terms used in the specification and claims of this application are not restrictive, but are only for the convenience of description.

Claims

1. A high-security PDU, characterized in that: It includes: A chassis, a liquid storage tank, a heat sink, a connector, and a female end. The liquid storage tank is arranged at the side wall of the chassis and close to the bottom of the chassis. The heat sink and the connector are arranged on the chassis. There are multiple connectors. A male end is arranged on the connector. There are multiple male ends. The female end of the connecting line is matched and plugged into the male end of the connector for signal transmission. A protective ring is fixedly arranged at the port of the male end. An air bag is matched and arranged inside the protective ring. The air bag is ring-shaped. The female end of the connecting line can pass through the center hole of the air bag and be plugged into the male end. Insulating oil is stored in the liquid storage tank. The liquid storage tank and the heat sink are connected by a connecting pipe. Two connecting pipes are provided and arranged oppositely. A pump body and a valve are provided at the connection between the liquid storage tank and the connecting pipe. A liquid collecting pipe is provided on the wall of the chassis. The liquid collecting pipe and the air bag are connected by a mainstream pipe. The liquid collecting pipe and the connecting pipe are connected by a drainage pipe. A protective mechanism is provided on the wall of the chassis. There are multiple protective mechanisms and they correspond one to one to the multiple male ends.

2. A high-security PDU according to claim 1, characterized in that: The protective mechanism includes a collection box and a trigger assembly. The collection box is arranged on the wall of the chassis. The collection box is a rectangular shell with a closed top and an open bottom. A support plate is horizontally fixed at the bottom opening of the collection box. A shift plate is horizontally matched in the collection box. A guide rod is vertically arranged at the bottom of the shift plate. The bottom of the guide rod passes through the plate surface of the support plate and is horizontally connected to a pressure plate 1. The end of the pressure plate 1 extends horizontally and extends out of the bottom of the collection box. A spring 1 is sleeved on the guide rod. One end of the spring 1 contacts the bottom of the shift plate, and the other end of the spring 1 contacts the plate surface of the support plate. The trigger assembly is arranged on the wall of the collection box, and the trigger assembly is used to trigger the pressure plate to move down.

3. A high-security PDU according to claim 2, characterized in that: The trigger assembly includes a push rod, a second pressure plate, a mounting block, a guide plate, and a baffle. The mounting block is fixed to the wall of the collection box, the second pressure plate is above the mounting block, the second pressure plate is horizontally arranged, the top of the push rod is fixedly connected to the bottom of the second pressure plate, the bottom of the push rod extends vertically downward through the plate surface of the mounting block, two push rods are provided and are arranged in parallel, a second spring is sleeved on the push rod, one end of the second spring contacts the bottom of the second pressure plate, and the other end of the second spring contacts the top of the mounting block, the bottom of the push rod is close to the first pressure plate, the baffle is vertically arranged on one side of the second pressure plate, the baffle and the second pressure plate are connected by a guide plate, and the guide plate is inclined.

4. A high-security PDU according to claim 3, characterized in that: A conversion assembly is provided on the top of the collecting box, and the conversion assembly includes a support plate, a mounting seat, a guide column 1, a mounting plate 1, and a mounting plate 2. The support plate is provided on the top of the collecting box, and the mounting seat is on one side of the support plate. One end of the guide column 1 is connected to the wall of the mounting seat, and the other end of the guide column 1 passes through the plate surface of the support plate and is provided with a baffle. Two guide columns 1 are provided and are arranged in parallel. A spring 3 is sleeved on the guide column 1, one end of the spring 3 contacts the plate surface of the support plate, and the other end of the spring 3 contacts the baffle at the end of the guide column 1. The mounting plate 1 and the mounting plate 2 are fixedly provided at the end of the mounting seat, and the mounting plate 1 and the mounting plate 2 are arranged in parallel. The wall of the mounting plate 2 is horizontally fixed with a guide column. In the initial state, the guide column is at the bottom of the guide plate and close to the pressure plate 2, and the ends of the mounting plate 1 and the mounting plate 2 are close to the mainstream pipe.

5. A high-security PDU according to claim 4, characterized in that: An opening and closing assembly is arranged between the mounting plate 1 and the mounting plate 2, and the opening and closing assembly is close to the ends of the mounting plate 1 and the mounting plate 2. The opening and closing assembly includes a clamping plate 1, a guide column 2, a clamping plate 2, and a guide column 3. The clamping plate 1 and the clamping plate 2 are located between the mounting plate 1 and the mounting plate 2, and the clamping plate 1 and the clamping plate 2 are arranged in parallel. One end of the guide column 2 is fixedly connected to the plate surface of the clamping plate 1, and the other end of the guide column 2 passes through the plate surface of the mounting plate 1 and is provided with a baffle. A spring 4 is sleeved on the guide column 2, and one end of the spring 4 contacts the plate surface of the mounting plate 1, and the other end of the spring 4 contacts the plate surface of the mounting plate 1. The plate surface of clamping plate one is in contact with the plate surface of clamping plate two, one end of guide column three is fixedly connected with the plate surface of clamping plate two, the other end of guide column three passes through the plate surface of mounting plate two and is provided with a baffle, a spring five is sleeved on guide column three, one end of spring five is in contact with the plate surface of clamping plate two, the other end of spring five is in contact with the plate surface of mounting plate two, the collecting box is connected with the bottom of the airbag through a shunt pipe, the shunt pipe is close to the mainstream pipe, both the mainstream pipe and the shunt pipe are made of metal hoses, in the initial state, clamping plate one and clamping plate two clamp the shunt pipe, and the shunt pipe is in a closed state.

6. A high-security PDU according to claim 5, characterized in that: A pump body 2 is arranged on the liquid storage tank.

7. A high-security PDU according to claim 5, characterized in that: The structures of the first clamping plate and the second clamping plate are the same, and the two ends of the first clamping plate and the second clamping plate are obtuse angles, which is convenient for the displacement and clamping of the first clamping plate and the second clamping plate.

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