High heat dissipation local current monitoring device for distribution cabinets

Abstract

The present invention discloses a high-heat dissipation type local current monitoring device for a power distribution cabinet, comprising a power distribution cabinet body, an intelligent positioning cooling unit fixedly mounted at the bottom of the inner cavity of the power distribution cabinet body, a plug-in combination power distribution mainboard fixedly mounted in the middle of the top surface of the intelligent positioning cooling unit, a flow positioning current monitoring unit fixedly mounted on the outer sleeve of the plug-in combination power distribution mainboard, and an intelligent heat dissipation unit fixedly mounted on the top of the flow positioning current monitoring unit. The present invention provides an intelligent control host, which controls a harness flow monitor and an electrical component flow monitor respectively to monitor the flow of electrical components installed on the front of the mainboard and the connecting harness connected to the inside of the wiring backplane. This achieves all-round, no-dead-angle temperature sensing monitoring of the electrical components and connecting harnesses inside the power distribution cabinet, thereby avoiding the problem of heat collection damage caused by local current overload of the electrical components and connecting harnesses inside the power distribution cabinet, and extending the service life and safety of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution cabinets, and more particularly to a high-heat dissipation type local current monitoring device for a power distribution cabinet. Background Art

[0002] The distribution cabinet is divided into power distribution cabinet, lighting distribution cabinet and metering cabinet. It is the final equipment of the distribution system. Its main function is to distribute the electric energy of a circuit of the upper-level distribution equipment to the nearest load and provide protection, monitoring and control for the load. The distribution cabinet is mainly composed of three parts: the distribution cabinet body, the distribution mainboard and the heat dissipation unit. Among them, a large number of electrical components are installed on the distribution mainboard. Various electrical components are connected to each other through connecting harnesses to form a complete distribution circuit.

[0003] However, the existing distribution cabinets still have some shortcomings in actual use. For example, a large number of connecting wire harnesses are distributed inside the existing distribution cabinets. When the distribution cabinets are operated at high load for a long time, the electrical components and connecting wire harnesses inside them will generate a lot of heat under the action of internal resistance. The heat dissipation unit installed inside the existing distribution cabinet cannot centrally dissipate heat for a single heat-collecting electrical component, and the heat dissipation effect is poor, which affects the service life of the distribution cabinet. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a high-heat dissipation type local current monitoring device for a distribution cabinet, so as to solve the problem that a large number of connecting wire harnesses are distributed inside the existing distribution cabinet. When the distribution cabinet operates at high load for a long time, the electrical components and connecting wire harnesses inside it will generate a large amount of heat under the action of internal resistance, and the heat dissipation unit installed inside the existing distribution cabinet cannot centrally dissipate heat for a single heat-collecting electrical component, and the heat dissipation effect is poor, which affects the service life of the distribution cabinet.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a high-heat dissipation type local current monitoring device for a power distribution cabinet, comprising a power distribution cabinet body, wherein the tops of the left and right side walls of the power distribution cabinet body are inlaid with grid dustproof side windows, the bottom of the back plate of the power distribution cabinet body is inlaid with a grid dustproof air intake window, the bottom of the inner cavity of the power distribution cabinet body is fixedly installed with an intelligent positioning cooling unit connected to the grid dustproof air intake window, a plug-in combination power distribution mainboard is fixedly installed in the middle of the top surface of the intelligent positioning cooling unit, the external fixed sleeve of the plug-in combination power distribution mainboard is fixedly equipped with a flow positioning current monitoring unit fixedly connected to the intelligent positioning cooling unit, and the top of the flow positioning current monitoring unit is fixedly installed with an intelligent heat dissipation unit connected to the two grid dustproof side windows;

[0006] The intelligent heat dissipation unit includes an intelligent control host, a heat dissipation fan 1 connected to one of the grid dust-proof side windows is fixedly installed on the left side of the intelligent control host, and a heat dissipation fan 2 connected to the other grid dust-proof side window is fixedly installed on the right side of the intelligent control host, and the control ends of the heat dissipation fan 1 and the heat dissipation fan 2 are both electrically connected to the intelligent control host;

[0007] The flow positioning current monitoring unit includes a wiring harness flow monitor, the front of which is fixedly mounted with two horizontally symmetrically distributed connecting beams. The front of the wiring harness flow monitor is fixedly connected to an electrical component flow monitor located at the front of the plug-in combination power distribution mainboard via the two connecting beams. The two connecting beams are respectively arranged on the left and right sides of the top of the plug-in combination power distribution mainboard. The wiring harness flow monitor and the electrical component flow monitor are combined components of the same structure.

[0008] The harness flow monitor and the electric element flow monitor both include a shunt connector, both ends of which are fixedly mounted with electric drive screws, a retractable harness is fixedly mounted at the bottom of one end of the shunt connector, and the bottom end of the retractable harness is fixedly connected to a flow monitor that is transmission-connected to the two electric drive screws;

[0009] The flow monitor includes a multi-port electric fire extinguisher, with threaded transmission sliders fixedly mounted on both ends of the multi-port electric fire extinguisher and threadedly connected to the electric drive screw. A multi-point temperature monitor is fixedly mounted in the middle of the top surface of the multi-port electric fire extinguisher, the multi-point temperature monitor is electrically connected to the multi-port electric fire extinguisher, and the multi-port electric fire extinguisher is electrically connected to the telescopic wiring harness.

[0010] The plug-in combination power distribution motherboard includes a power connection motherboard, a plurality of equally spaced card sockets are embedded and installed on the front of the power connection motherboard, a wire management backplane is fixedly installed on the back of the power connection motherboard, and the wiring harnesses of the plurality of card sockets are arranged inside the wiring card slots on the back of the wire management backplane;

[0011] The intelligent positioning cooling unit includes a double-outlet induced draft fan, and the air outlets at both ends of the double-outlet induced draft fan are fixedly connected to a multi-way cooling air duct that fits the inner wall of the distribution cabinet body. The two multi-way cooling air ducts are both adapted to be equipped with compression refrigerators, and the sides of the two multi-way cooling air ducts adjacent to the plug-in combination distribution mainboard are inlaid with a number of parallel and equidistantly distributed electrically controlled air outlet valves.

[0012] Preferably, the power connection end of the intelligent control host is electrically connected to the main power supply end of the plug-in combination power distribution mainboard, the intelligent control host and the plug-in combination power distribution mainboard are electrically connected in parallel to the external power supply line, and the output end of the intelligent control host is electrically connected to the harness flow monitor and the electrical component flow monitor through two sets of independent connection harnesses.

[0013] Preferably, the wiring harness flow monitor and the electric component flow monitor are both electrically connected to the power connection end of the double-outlet exhaust fan, and the wiring harness flow monitor is electrically connected to the compression refrigerator and the electrically controlled air outlet valve adapted to one of the multi-way refrigeration air ducts, and the electric component flow monitor is electrically connected to the compression refrigerator and the electrically controlled air outlet valve adapted to another multi-way refrigeration air duct.

[0014] Preferably, the electrical component flow monitor is fixedly installed on the front of the power connection main board, the component flow monitor of the electrical component flow monitor is movably installed on the front of the power connection main board, the wiring harness flow monitor is fixedly installed on the rear of the wiring management backplane, and the component flow monitor of the wiring harness flow monitor is movably installed on the rear of the wiring management backplane.

[0015] Preferably, the telescopic wiring harness is electrically connected to the shunt connector, the shunt connector is electrically connected to the drive motors of the two electric drive screws, the intelligent control host is electrically connected to the shunt connector, and the telescopic wiring harness and the electric drive screw are electrically connected to the intelligent control host through the shunt connector.

[0016] Preferably, the side of the multi-port electric fire extinguisher adjacent to the plug-in combination power distribution mainboard is equipped with several temperature sensors distributed side by side and at equal distances, and the side of the multi-point temperature monitoring instrument adjacent to the plug-in combination power distribution mainboard is embedded with several electric-controlled nozzles distributed side by side and at equal distances. The several electric-controlled nozzles of the multi-point temperature monitoring instrument are respectively electrically connected to the several temperature sensors distributed side by side and at equal distances of the multi-port electric fire extinguisher in a one-to-one correspondence, and the inner cavity of the multi-point temperature monitoring instrument is compressed and filled with liquid carbon dioxide.

[0017] The multi-port electric-controlled fire extinguisher is a cross bar, and multiple electric-controlled fire extinguishers are installed in the multi-port electric-controlled fire extinguisher. Air collection ducts are fixedly installed on both sides of the cross bar facing the card socket. The air collection duct is a hollow structure and can be parallel to the electric-controlled air outlet valves on both sides. It can collect air and enter the middle windshield. The two ends of the windshield are rotatably connected to the air collection duct through a rotating joint. A driving device is installed at the bottom of the multi-port electric-controlled fire extinguisher to drive the windshield to rotate back and forth at a certain angle. The windshield faces the card socket, which can quickly cool down. The electric-controlled fire extinguisher spray head is installed in the windshield, and the spray head is connected to the electric fire extinguisher through a connecting pipe. When a fire is detected, the electric-controlled air outlet valve is not started, and the electric-controlled fire extinguisher sprays fire. At the same time, the driving device drives the windshield to rotate up and down, thereby improving the fire extinguishing range and fire extinguishing efficiency.

[0018] Preferably, the compression refrigerator is composed of a compressor and a condensing coil. The compressor of the compression refrigerator is fixedly installed on the top of the multi-way refrigeration air duct, and the condensing coil of the compression refrigerator is fixedly sleeved on the inner cavity of the multi-way refrigeration air duct.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention sets up an intelligent control host and uses the intelligent control host to control the harness flow monitor and the electrical component flow monitor respectively to monitor the flow of electrical components installed on the front of the main board and the connecting harness connected inside the wiring backplane. This realizes all-round and no-dead-angle temperature sensing monitoring of electrical components and connecting harnesses inside the distribution cabinet, so as to avoid the problem of heat collection damage caused by local current overload of electrical components and connecting harnesses inside the distribution cabinet, thereby extending the service life and safety of the device.

[0021] 2. The present invention sets up a harness flow monitor and an electrical component flow monitor, and uses the harness flow monitor and electrical component flow monitor to respectively monitor the flow of electrical components installed on the front of the main board and the connecting harness connected inside the wiring backplane for fixed-point fire prevention and cooling. A multi-point temperature sensor monitor is used to monitor the internal temperature of the distribution cabinet in real time, and a multi-port electric fire extinguisher is used to automatically extinguish and cool the overloaded heat collection fire points of the electrical components or wiring harnesses inside the distribution cabinet, so as to prevent the problem of local electrical fires inside the distribution cabinet from causing fires, thereby improving the safety of the device.

[0022] 3. The present invention sets up an intelligent positioning cooling unit and uses an intelligent control host to respectively control the double-outlet drainage fan and the compression refrigerators and electric-controlled air outlet valves adapted for two groups of multi-pass refrigeration air ducts. When the electrical components and wiring harnesses inside the distribution cabinet are locally overloaded and heat is collected, the double-outlet drainage fan is controlled to cooperate with the compression refrigerators and several electric-controlled air outlet valves adapted for two groups of multi-pass refrigeration air ducts to deliver low-temperature airflow to the local heat collection and temperature rise location, and the temperature is rapidly and fixedly reduced, thereby avoiding the problem of local current overload and heat collection fire of the electrical components or wiring harnesses inside the distribution cabinet and improving the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the main structure of the power distribution cabinet of the present invention;

[0025] Figure 3 This is a structural diagram of the intelligent heat dissipation unit of the present invention;

[0026] Figure 4 This is a schematic structural diagram of the plug-in combination power distribution mainboard of the present invention;

[0027] Figure 5 This is a structural diagram of the intelligent positioning cooling unit of the present invention;

[0028] Figure 6 This is a structural diagram of the flow positioning current monitoring unit of the present invention;

[0029] Figure 7 This is a schematic structural diagram of the electric element flow monitor of the present invention;

[0030] Figure 8 Schematic diagram of the flow monitor structure of the present invention.

[0031] Figure 9 This is a schematic structural diagram of the multi-port electronically controlled fire extinguisher of the present invention.

[0032] The accompanying drawings are marked as follows: 1. Distribution cabinet body; 2. Grid dust-proof side window; 3. Grid dust-proof air intake window; 4. Intelligent positioning cooling unit; 5. Plug-in combination distribution mainboard; 6. Flow positioning current monitoring unit; 7. Intelligent heat dissipation unit; 71. Intelligent control host; 72. Heat dissipation fan 1; 73. Heat dissipation fan 2; 51. Power connection mainboard; 52. Card socket; 53. Cable management backplane; 41. Double-outlet drainage fan; 42. Multi-pass cooling air duct; 43. Compression refrigerator; 44. Electric control air outlet valve; 61. Wire harness flow monitor; 62. Connecting beam; 63. Electrical component flow monitor; 631. Shunt connector; 632. Electric drive screw; 633. Telescopic wiring harness; 634. Flow monitor; 6341. Multi-port electric fire extinguisher; 6342. Threaded transmission slider; 6343. Multi-point temperature monitor. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] As attached Figure 1-9The high heat dissipation local current monitoring device for the power distribution cabinet shown in the figure comprises a power distribution cabinet body 1, the tops of the left and right side walls of the power distribution cabinet body 1 are inlaid with grid dustproof side windows 2, the bottom of the back plate of the power distribution cabinet body 1 is inlaid with a grid dustproof air intake window 3, the bottom of the inner cavity of the power distribution cabinet body 1 is fixedly installed with an intelligent positioning cooling unit 4 connected to the grid dustproof air intake window 3, a plug-in combination power distribution mainboard 5 is fixedly installed in the middle of the top surface of the intelligent positioning cooling unit 4, the external fixed sleeve of the plug-in combination power distribution mainboard 5 is equipped with a flow positioning current monitoring unit 6 fixedly connected to the intelligent positioning cooling unit 4, and the top of the flow positioning current monitoring unit 6 is fixedly installed with an intelligent positioning cooling unit 4 connected to the two grid dustproof side windows 2. The intelligent heat dissipation unit 7 includes an intelligent control host 71, and the left side of the intelligent control host 71 is fixedly installed with a heat dissipation fan 72 connected to one of the grid dust-proof side windows 2, and the right side of the intelligent control host 71 is fixedly installed with a heat dissipation fan 2 73 connected to the other grid dust-proof side window 2, and the control ends of the heat dissipation fan 1 72 and the heat dissipation fan 2 73 are electrically connected to the intelligent control host 71; the flow positioning current monitoring unit 6 includes a harness flow monitor 61, and the front of the harness flow monitor 61 is fixedly installed with two horizontally symmetrically distributed connecting beams 62, and the front of the harness flow monitor 61 is fixedly connected to the plug-in connector through the two connecting beams 62. The electric component flow monitor 63 at the front of the combined power distribution mainboard 5, the two connecting crossbeams 62 are respectively arranged on the left and right sides of the top of the plug-in combined power distribution mainboard 5, the harness flow monitor 61 and the electric component flow monitor 63 are combined components of the same structure; the harness flow monitor 61 and the electric component flow monitor 63 both include a shunt connector 631, both ends of the shunt connector 631 are fixedly installed with an electric drive screw 632, the bottom of one end of the shunt connector 631 is fixedly installed with a telescopic harness 633, the bottom end of the telescopic harness 633 is fixedly connected to a flow monitor 634 which is transmission-connected to the two electric drive screws 632; the flow monitor 634 includes a multi-port electric-controlled fire extinguisher 6341, a multi-port electric-controlled fire extinguisher Both ends of the fire extinguisher 6341 are fixedly installed with threaded transmission sliders 6342 that are threadedly connected to the electric drive screw 632. A multi-point temperature monitor 6343 is fixedly installed in the middle of the top surface of the multi-port electric fire extinguisher 6341. The multi-point temperature monitor 6343 is electrically connected to the multi-port electric fire extinguisher 6341, and the multi-port electric fire extinguisher 6341 is electrically connected to the telescopic wiring harness 633. The plug-in combination power distribution motherboard 5 includes a power connection motherboard 51. The front of the power connection motherboard 51 is embedded with a number of equidistantly distributed card sockets 52. The back of the power connection motherboard 51 is fixedly installed with a wire management backboard 53. The wiring harnesses of the several card sockets 52 are arranged inside the wiring card slots on the back of the wire management backboard 53.The intelligent positioning cooling unit 4 includes a dual-discharge induction fan 41. The air outlets at both ends of the dual-discharge induction fan 41 are fixedly connected to a multi-pass cooling duct 42 that fits against the inner wall of the power distribution cabinet body 1. Both multi-pass cooling ducts 42 are equipped with a compression cooler 43. Several electrically controlled air outlet valves 44 are installed in parallel and equidistantly on the sides of the multi-pass cooling ducts 42 adjacent to the plug-in combination power distribution board 5.

[0035] As attached Figure 2 To the attached Figure 9The power supply terminal of the intelligent control host 71 is electrically connected to the power supply terminal of the plug-in combination power distribution motherboard 5, and the intelligent control host 71 and the plug-in combination power distribution motherboard 5 are electrically connected in parallel to the external power supply line, and the output end of the intelligent control host 71 is electrically connected to the harness flow monitor 61 and the electric component flow monitor 63 through two sets of independent connection harnesses; the harness flow monitor 61 and the electric component flow monitor 63 are both electrically connected to the power supply terminal of the double-outlet drainage fan 41, and the harness flow monitor 61 is electrically connected to the compression refrigerator 43 and the electric control outlet valve 44 adapted to one of the multi-pass refrigeration air ducts 42, and the electric component flow monitor 63 is electrically connected to the other multi-pass refrigeration air duct 42. The compression cooler 43 and the electrically controlled air outlet valve 44 are electrically connected; the electric component flow monitor 63 is fixedly mounted on the front of the power connection main board 51, and the component flow monitor 634 of the electric component flow monitor 63 is movably mounted on the front of the power connection main board 51, the wiring harness flow monitor 61 is fixedly mounted on the rear of the wiring backboard 53, and the component flow monitor 634 of the wiring harness flow monitor 61 is movably mounted on the rear of the wiring backboard 53; the telescopic wiring harness 633 is electrically connected to the shunt connector 631, the shunt connector 631 is electrically connected to the drive motors of the two electric drive screws 632, the intelligent control host 71 is electrically connected to the shunt connector 631, and the telescopic wiring harness 633 and the electric drive screw 632 are both electrically connected. It is electrically connected to the intelligent control host 71 through the shunt connector 631; the side of the multi-port electric fire extinguisher 6341 adjacent to the plug-in combination power distribution motherboard 5 is adapted with several temperature sensors distributed side by side and at equal distances, and the side of the multi-point temperature monitor 6343 adjacent to the plug-in combination power distribution motherboard 5 is inlaid with several electric control nozzles distributed side by side and at equal distances, and the several electric control nozzles of the multi-point temperature monitor 6343 are electrically connected one-to-one with the several temperature sensors distributed side by side and at equal distances of the multi-port electric fire extinguisher 6341. The inner cavity of the multi-point temperature monitor 6343 is compressed and filled with liquid carbon dioxide; the multi-port electric fire extinguisher 6341 is a cross bar, and multiple electric control nozzles are installed in the multi-port electric fire extinguisher 6341. Fire extinguisher, both sides of the cross bar facing the card socket 52 are fixedly installed with air collection ducts, the air collection ducts are hollow structures, which can be parallel to the electric control air outlet valves 44 on both sides, can collect air and enter the middle wind shield, the two ends of the wind shield are rotatably connected to the air collection duct through a rotating joint, the bottom of the multi-port electric control fire extinguisher 6341 is equipped with a driving device that can drive the wind shield to rotate back and forth at a certain angle, and the wind shield faces the card socket 52, which can quickly cool down, the electric control fire extinguisher injection head is installed in the wind shield, and the injection head is connected to the electric fire extinguisher through a connecting pipe. When a fire is detected, the electric control air outlet valve is not started, and the electric control fire extinguisher sprays fire. At the same time, the driving device drives the wind shield to rotate up and down, thereby improving the fire extinguishing range and fire extinguishing efficiency;The compression refrigerator 43 is composed of a compressor and a condensing coil. The compressor of the compression refrigerator 43 is fixedly installed on the top of the multi-pass refrigeration air duct 42, and the condensing coil of the compression refrigerator 43 is fixedly sleeved into the inner cavity of the multi-pass refrigeration air duct 42.

[0036] Specifically, by setting up an intelligent control host 71, the intelligent control host 71 is used to control the harness flow monitor 61 and the electrical component flow monitor 63 to respectively connect the electrical components installed on the front of the electrical mainboard 51 and the connecting harness clamped inside the wiring backboard 53 for flow monitoring, thereby achieving all-round and no-dead-angle temperature sensing monitoring of the electrical components and connecting harnesses inside the distribution cabinet, so as to avoid the problem of heat collection damage caused by local current overload of the electrical components and connecting harnesses inside the distribution cabinet, thereby extending the service life and safety of the device; by setting up a harness flow monitor 61 and an electrical component flow monitor 63, the harness flow monitor 61 and the electrical component flow monitor 63 are used to respectively connect the electrical components installed on the front of the electrical mainboard 51 and the connecting harness clamped inside the wiring backboard 53 for flow monitoring and fixed-point fire prevention and cooling, and the temperature inside the distribution cabinet is monitored in real time by a multi-point temperature sensor 6343. Degree, and through the multi-port electric-controlled fire extinguisher 6341, the overloaded heat collection fire point of the electrical components or wiring harness inside the distribution cabinet is automatically extinguished and cooled, so as to prevent the problem of local electrical fire inside the distribution cabinet causing fire, thereby improving the safety of the device; by setting an intelligent positioning cooling unit 4, the intelligent control host 71 is used to control the double-outlet drainage fan 41 and the compression refrigerator 43 and the electric-controlled air outlet valve 44 adapted for the two groups of multi-pass cooling air ducts 42 respectively. When the electrical components and wiring harness inside the distribution cabinet are locally overloaded and heat-collected, the double-outlet drainage fan 41 is controlled to cooperate with the compression refrigerator 43 and several electric-controlled air outlet valves 44 adapted for the two groups of multi-pass cooling air ducts 42 to deliver low-temperature airflow to the local heat collection and heating place for rapid and targeted cooling, thereby avoiding the problem of local current overload and heat collection fire of the electrical components or wiring harness inside the distribution cabinet, thereby improving the safety of the device.

[0037] Working principle of the present invention:

[0038] By setting up an intelligent control host 71, the intelligent control host 71 controls the harness flow monitor 61 and the electrical component flow monitor 63 to monitor the flow of electrical components installed on the front of the main board 51 and the connecting harness connected to the inner portion of the wiring backplane 53. This achieves all-round, no-blind-angle temperature sensing monitoring of the electrical components and connecting harnesses inside the distribution cabinet, thereby avoiding the problem of heat collection damage caused by local current overload of the electrical components and connecting harnesses inside the distribution cabinet, thereby extending the service life and safety of the device.

[0039] By providing a harness flow monitor 61 and an electrical component flow monitor 63, the harness flow monitor 61 and the electrical component flow monitor 63 are used to monitor the flow of electrical components installed on the front of the main board 51 and the connecting harness connected to the inside of the cable management backplane 53, respectively, and to provide targeted fire prevention and cooling. A multi-point temperature sensor 6343 is used to monitor the internal temperature of the power distribution cabinet in real time, and a multi-port electric fire extinguisher 6341 is used to automatically extinguish and cool overloaded heat collection fire points of electrical components or wiring harnesses inside the power distribution cabinet, thereby preventing local electrical fires from causing fires inside the power distribution cabinet and improving the safety of the device.

[0040] By setting up an intelligent positioning cooling unit 4, the intelligent control host 71 is used to control the double-outlet induced draft fan 41 and the compression refrigerator 43 and the electric control air outlet valve 44 adapted for two groups of multi-pass cooling air ducts 42 respectively. When the electrical components and wiring harnesses inside the distribution cabinet are locally overloaded for heat collection, the double-outlet induced draft fan 41 is controlled to cooperate with the compression refrigerator 43 and several electric control air outlet valves 44 adapted for two groups of multi-pass cooling air ducts 42 to deliver low-temperature airflow to the local heat collection and temperature rise area, and perform rapid and targeted cooling, thereby avoiding the problem of local current overload and heat collection fire of the electrical components or wiring harnesses inside the distribution cabinet, and improving the safety of the device.

[0041] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense, and may refer to mechanical or electrical connections, internal communication between two components, or direct connection. "Up," "down," "left," and "right" are only used to indicate relative positional relationships. When the absolute positions of the objects being described change, the relative positional relationships may also change.

[0042] Secondly: The drawings of the embodiments disclosed in the present invention only involve structures related to the embodiments disclosed in the present invention. Other structures may refer to conventional designs. The same embodiment and different embodiments of the present invention may be combined with each other without conflict.

[0043] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-heat dissipation local current monitoring device for a power distribution cabinet, comprising a power distribution cabinet body, wherein the tops of the left and right side walls of the power distribution cabinet body are both inlaid with grid dust-proof side windows, and the bottom of the back panel of the power distribution cabinet body is inlaid with a grid dust-proof air intake window, characterized in that: An intelligent positioning cooling unit connected to the grid dust-proof air inlet window is fixedly installed at the bottom of the inner cavity of the power distribution cabinet body, a plug-in combination power distribution mainboard is fixedly installed in the middle of the top surface of the intelligent positioning cooling unit, and a flow positioning current monitoring unit fixedly connected to the intelligent positioning cooling unit is fixedly installed on the outside of the plug-in combination power distribution mainboard, and an intelligent heat dissipation unit connected to the two grid dust-proof side windows is fixedly installed on the top of the flow positioning current monitoring unit; The intelligent heat dissipation unit includes an intelligent control host, a heat dissipation fan 1 connected to one of the grid dust-proof side windows is fixedly installed on the left side of the intelligent control host, and a heat dissipation fan 2 connected to the other grid dust-proof side window is fixedly installed on the right side of the intelligent control host, and the control ends of the heat dissipation fan 1 and the heat dissipation fan 2 are both electrically connected to the intelligent control host; The flow positioning current monitoring unit includes a wiring harness flow monitor, the front of which is fixedly mounted with two horizontally symmetrically distributed connecting beams. The front of the wiring harness flow monitor is fixedly connected to an electrical component flow monitor located at the front of the plug-in combination power distribution mainboard via the two connecting beams. The two connecting beams are respectively arranged on the left and right sides of the top of the plug-in combination power distribution mainboard. The wiring harness flow monitor and the electrical component flow monitor are combined components of the same structure. The harness flow monitor and the electric element flow monitor both include a shunt connector, both ends of which are fixedly mounted with electric drive screws, a retractable harness is fixedly mounted at the bottom of one end of the shunt connector, and the bottom end of the retractable harness is fixedly connected to a flow monitor that is transmission-connected to the two electric drive screws; The flow monitor includes a multi-port electric fire extinguisher, with threaded transmission sliders fixedly mounted on both ends of the multi-port electric fire extinguisher and threadedly connected to the electric drive screw. A multi-point temperature monitor is fixedly mounted in the middle of the top surface of the multi-port electric fire extinguisher, the multi-point temperature monitor is electrically connected to the multi-port electric fire extinguisher, and the multi-port electric fire extinguisher is electrically connected to the telescopic wiring harness. The plug-in combination power distribution motherboard includes a power connection motherboard, a plurality of equally spaced card sockets are embedded and installed on the front of the power connection motherboard, a wire management backplane is fixedly installed on the back of the power connection motherboard, and the wiring harnesses of the plurality of card sockets are arranged inside the wiring card slots on the back of the wire management backplane; The intelligent positioning cooling unit includes a double-outlet induced draft fan, and the air outlets at both ends of the double-outlet induced draft fan are fixedly connected to a multi-way cooling air duct that fits the inner wall of the distribution cabinet body. The two multi-way cooling air ducts are both adapted to be equipped with compression refrigerators, and the sides of the two multi-way cooling air ducts adjacent to the plug-in combination distribution mainboard are inlaid with a number of parallel and equidistantly distributed electrically controlled air outlet valves.

2. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The power connection end of the intelligent control host is electrically connected to the main power supply end of the plug-in combination power distribution mainboard. The intelligent control host and the plug-in combination power distribution mainboard are electrically connected in parallel to the external power supply line, and the output end of the intelligent control host is electrically connected to the harness flow monitor and the electrical component flow monitor through two sets of independent connection harnesses.

3. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The wiring harness flow monitor and the electrical component flow monitor are both electrically connected to the power connection end of the double-outlet exhaust fan, and the wiring harness flow monitor is electrically connected to the compression refrigerator and the electrically controlled air outlet valve adapted to one of the multi-way refrigeration air ducts, and the electrical component flow monitor is electrically connected to the compression refrigerator and the electrically controlled air outlet valve adapted to another multi-way refrigeration air duct.

4. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The electrical component flow monitor is fixedly installed on the front of the power connection main board, and the component flow monitor of the electrical component flow monitor is movably installed on the front of the power connection main board. The wiring harness flow monitor is fixedly installed on the rear of the wiring backplane, and the component flow monitor of the wiring harness flow monitor is movably installed on the rear of the wiring backplane.

5. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The telescopic wiring harness is electrically connected to the shunt connector, the shunt connector is electrically connected to the drive motors of the two electric drive screws, the intelligent control host is electrically connected to the shunt connector, and the telescopic wiring harness and the electric drive screw are electrically connected to the intelligent control host through the shunt connector.

6. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The side of the multi-port electric fire extinguisher adjacent to the plug-in combination power distribution mainboard is equipped with several temperature sensors distributed side by side and at equal distances. The side of the multi-point temperature monitoring instrument adjacent to the plug-in combination power distribution mainboard is embedded with several electric-controlled nozzles distributed side by side and at equal distances. The several electric-controlled nozzles of the multi-point temperature monitoring instrument are respectively electrically connected to the several temperature sensors distributed side by side and at equal distances of the multi-port electric fire extinguisher in a one-to-one correspondence. The inner cavity of the multi-point temperature monitoring instrument is compressed and filled with liquid carbon dioxide.

7. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The multi-port electric-controlled fire extinguisher is a cross bar, and multiple electric-controlled fire extinguishers are installed in the multi-port electric-controlled fire extinguisher. Air collection ducts are fixedly installed on both sides of the cross bar facing the card socket. The air collection duct is a hollow structure and can be parallel to the electric-controlled air outlet valves on both sides. It can collect air and enter the middle windshield. The two ends of the windshield are rotatably connected to the air collection duct through a rotating joint. A driving device is installed at the bottom of the multi-port electric-controlled fire extinguisher to drive the windshield to rotate back and forth at a certain angle. The windshield faces the card socket, which can quickly cool down. The electric-controlled fire extinguisher spray head is installed in the windshield, and the spray head is connected to the electric fire extinguisher through a connecting pipe. When a fire is detected, the electric-controlled air outlet valve is not started, and the electric-controlled fire extinguisher sprays fire. At the same time, the driving device drives the windshield to rotate up and down, thereby improving the fire extinguishing range and fire extinguishing efficiency.

8. The high heat dissipation type local current monitoring device for a power distribution cabinet according to claim 1, characterized in that: The compression refrigerator is composed of a compressor and a condensing coil. The compressor of the compression refrigerator is fixedly installed on the top of the multi-way refrigeration air duct, and the condensing coil of the compression refrigerator is fixedly sleeved on the inner cavity of the multi-way refrigeration air duct.

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