A low voltage distribution cabinet with monitoring function

Abstract

The present invention relates to the technical field of low-voltage power distribution cabinets, and discloses a low-voltage power distribution cabinet with a monitoring function, including a low-voltage cabinet; a drawer unit, wherein the drawer unit includes a drawer body arranged in an installation chamber, wherein a static plug-in installation plate is also provided on the drawer body, a static plug-in shell is also installed on the static plug-in installation plate, and a static plug-in conductor is installed in the static plug-in shell; a dynamic plug-in shell is also installed on the drawer body, and a dynamic plug-in conductor is installed in the dynamic plug-in shell; and a monitoring unit, wherein the monitoring unit includes a power-taking steel ring sleeved on the dynamic plug-in conductor, a circuit board is provided on the power-taking steel ring, and an antenna and a temperature probe are installed on the circuit board. The present invention adopts an integrated structure of a wireless module and a plug-in, the sensor power supply is powered by a CT, the temperature sensor directly monitors the temperature at the plug-in connection, there is no deviation, data is transmitted wirelessly with low power consumption, no wiring is required inside the drawer, and the construction is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of low-voltage power distribution cabinets, and more specifically, to a low-voltage power distribution cabinet with a monitoring function. Background Art

[0002] Low-voltage cabinet drawer units are widely used in power distribution systems because their modular design allows for quick replacement and maintenance. However, the drawer plug-in is the key to the design. If the plug-in is unreliably connected, the temperature at the plug-in connection will rise, and the temperature increase will increase the resistance. When the temperature reaches the limit value (melting point) of the plug-in insulation, the plug-in will burn out or even short-circuit between phases or to the ground, affecting the safety of distribution equipment, personnel safety and the reliable operation of equipment, and ultimately causing a power outage.

[0003] Therefore, it is particularly important and urgent to monitor the temperature of the plug-in connector. At present, there are three main methods for monitoring the temperature of the plug-in connector:

[0004] Method 1: Install the temperature probe on the plug-in wiring ear, place the temperature module in the drawer, and transmit data to the host computer via wired connection. The monitoring point of this method is not directly located at the plug-in connection, and the wired connection installation is more complicated, and there is a risk of short circuit caused by insulation damage.

[0005] Method 2: Install a wireless temperature sensor on the copper busbar connected to the plug-in terminal. This method makes the monitoring point farther away from the plug-in connection, which may result in a larger deviation in the temperature reading.

[0006] Method 3: The temperature sensor and the transformer are integrated into an integrated structure. Although this structure simplifies installation, the monitoring point is also not at the plug-in connection point, and the temperature of the transformer will affect the monitoring results. In addition, since the plug-in itself is a key area for heat generation, placing the heat source transformer together may cause the plug-in temperature to rise, thereby increasing the risk of burning the plug-in. Summary of the invention

[0007] The present invention provides a low-voltage power distribution cabinet with a monitoring function, which solves the technical problem in the related art that the temperature at the plug-in connection is difficult to monitor, and when the temperature reaches the limit value of the plug-in insulation part, the plug-in burns out or even shorts between phases or to the ground.

[0008] The present invention provides a low-voltage power distribution cabinet with a monitoring function, comprising a low-voltage cabinet; an installation chamber arranged inside the low-voltage cabinet; a drawer unit, wherein the drawer unit comprises a drawer body arranged in the installation chamber, and a molded case circuit breaker is installed on the drawer body, a static plug-in installation plate is also provided on the drawer body, a static plug-in shell is also installed on the static plug-in installation plate, and a static plug-in conductor is installed in the static plug-in shell; a dynamic plug-in shell is also installed on the drawer body, and a dynamic plug-in conductor is installed in the dynamic plug-in shell, a connecting copper busbar is connected between the molded case circuit breaker and the dynamic plug-in conductor, a dynamic plug-in contact is also provided in the dynamic plug-in shell, and the dynamic plug-in conductor and the static plug-in conductor are plugged into the dynamic plug-in contact; a monitoring unit, wherein the monitoring unit comprises a power-taking steel ring sleeved on the dynamic plug-in conductor, a circuit board is provided on the power-taking steel ring, and an antenna and a temperature probe are installed on the circuit board; a heat dissipation unit, so as to cool the dynamic plug-in conductor, the static plug-in conductor and the dynamic plug-in contact through the heat dissipation unit to avoid burning the plug-in.

[0009] As a further optimization scheme of the present invention, the heat dissipation unit includes a first heat dissipation mechanism, and the first heat dissipation mechanism is arranged inside the movable plug-in contact piece, and the first heat dissipation mechanism includes a heat dissipation fan installed on the movable plug-in housing, and a heat dissipation sleeve arranged in the movable plug-in contact piece, and a conical tube is installed between the air outlet end of the heat dissipation fan and the heat dissipation sleeve.

[0010] As a further optimization solution of the present invention, the heat dissipation sleeve is further provided with a plurality of openings for diverting and guiding the heat dissipation airflow.

[0011] As a further optimization scheme of the present invention, the movable plug-in contact includes a plurality of contacts, and a gap is provided between each contact. The positions of the plurality of through openings correspond to the positions of the gaps on the movable plug-in contact one by one, so as to dissipate heat for the movable plug-in contact.

[0012] As a further optimization scheme of the present invention, the heat dissipation unit includes a second heat dissipation mechanism, and the second heat dissipation mechanism is arranged on the moving plug-in conductor and the static plug-in conductor, the second heat dissipation mechanism includes a heat conducting plate arranged on the moving plug-in conductor and the static plug-in conductor, the heat conducting plate is installed on the moving plug-in shell, a water cooling pipe is provided on the heat conducting plate, and a plurality of heat dissipation fins are installed on the water cooling pipe, both ends of the water cooling pipe extend to the outside of the heat dissipation fins, one end of the two groups of water cooling pipes is connected by a connecting pipe, and the other ends of the two groups of water cooling pipes are respectively installed with a water inlet pipe and a drain pipe, and a pressurizing mechanism is provided on the water inlet pipe for pressurizing the coolant in the water inlet pipe to improve the heat dissipation efficiency.

[0013] As a further optimization scheme of the present invention, the boosting mechanism includes a fixing frame installed on the outer shell of the movable plug-in unit, and a double-way pipe is symmetrically installed on the fixing frame, and the double-way pipe is provided with a first connecting port and a second connecting port, and the first connecting port is respectively connected to the water inlet pipe and the drain pipe, and a connecting pipe is also installed on the outer shell of the movable plug-in unit, and the connecting pipe is connected to the second connecting port.

[0014] As a further optimization scheme of the present invention, a connecting seat is installed on a group of two-way pipes close to the water inlet pipe, and a swing arm is rotatably connected to the connecting seat through a rotating shaft. Both ends of the swing arm away from the connecting seat are rotatably connected to connecting rods through a rotating shaft, and the end of the connecting rod away from the swing arm is respectively rotatably connected to the first guide rod and the second guide rod through a rotating shaft.

[0015] As a further optimization scheme of the present invention, a diaphragm is installed in a group of two-way tubes close to the water inlet pipe, and a guide groove adapted to the first guide rod is opened in a group of two-way tubes close to the water inlet pipe, and the guide groove is slidably connected to the first guide rod, and a diaphragm is installed at a position corresponding to the guide groove in the two-way tube to drive the first guide rod to squeeze the diaphragm to reduce the internal diameter of the two-way tube.

[0016] As a further optimization solution of the present invention, a limit block is installed on the first guide rod, and a spring is provided on the first guide rod.

[0017] As a further optimization scheme of the present invention, a protrusion is also provided on the movable plug-in conductor, and a metal sheet is installed on the protrusion, a deformation portion is provided on the metal sheet, and a groove is provided on the side of the metal sheet that contacts the deformation end of the deformation portion, and the end of the second guide rod away from the connecting rod contacts the protrusion.

[0018] The beneficial effects of the present invention are as follows: the present invention adopts an integrated structure of a wireless module and a plug-in, the power supply of the temperature sensor is obtained through a CT, the temperature sensor directly monitors the temperature at the plug-in connection, there is no deviation, the data is transmitted wirelessly with low power consumption, no wiring is required inside the drawer, and the construction is convenient. In addition, by transmitting the temperature monitoring data at the plug-in connection to the monitoring background, a limit alarm can be issued for the temperature at the plug-in connection, and it is predicted in advance whether the plug-in temperature exceeds the standard, and timely processing can be carried out to prevent the plug-in from burning out. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0020] Figure 2 It is a schematic diagram of the three-dimensional structure of the drawer unit of the present invention;

[0021] Figure 3 It is a schematic diagram of the exploded three-dimensional structure of the drawer unit connection of the present invention;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection between the moving plug-in conductor and the stationary plug-in conductor of the present invention;

[0023] Figure 5 It is a partial three-dimensional structural schematic diagram of the drawer unit of the present invention;

[0024] Figure 6 is a schematic diagram of the three-dimensional structure of the first heat dissipation mechanism of the present invention;

[0025] Figure 7 is a schematic diagram of the three-dimensional structure of the second heat dissipation mechanism of the present invention;

[0026] Figure 8 It is a schematic diagram of the three-dimensional structure of the boosting mechanism of the present invention;

[0027] Fig. 9 It is a schematic cross-sectional view of the local structure of the boosting mechanism of the present invention.

[0028] In the figure: 100, low voltage cabinet; 200, installation chamber; 300, drawer unit; 301, drawer body; 302, molded case circuit breaker; 303, static plug-in mounting plate; 304, static plug-in shell; 305, dynamic plug-in shell; 306, dynamic plug-in conductor; 3061, protrusion; 307, connecting copper busbar; 308, dynamic plug-in contact; 309, static plug-in conductor; 310, power steel ring; 311, circuit board; 312, antenna; 313, temperature probe; 400, first heat dissipation mechanism; 401, heat dissipation fan; 402, heat dissipation sleeve; 403, tapered tube; 404, through port; 500, second heat dissipation Mechanism; 501, heat conduction plate; 502, water cooling pipe; 503, heat dissipation fin; 504, connecting pipe; 505, water inlet pipe; 506, drain pipe; 507, booster mechanism; 5071, fixing frame; 5072, two-way pipe; 5073, first connecting port; 5074, second connecting port; 5075, connecting pipe; 5076, connecting seat; 5077, swing arm; 5078, connecting rod; 5079, first guide rod; 50710, diaphragm; 50711, second guide rod; 50712, metal sheet; 50713, deformation part; 50714, notch; 50715, limit block; 50716, spring. DETAILED DESCRIPTION

[0029] The subject matter described herein will now be discussed with reference to example embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Each example may omit, replace or add various processes or components as needed. In addition, the features described relative to some examples may also be combined in other examples.

[0030] According to the attached Figure 1 As shown, a low-voltage power distribution cabinet with a monitoring function comprises a low-voltage cabinet 100 , wherein an installation chamber 200 is provided in the low-voltage cabinet 100 , and a drawer unit 300 is provided in the installation chamber 200 .

[0031] Specifically, according to the attached Figure 2 , Attachment Figure 3 and attached Figure 4 As shown, the drawer unit 300 includes a drawer body 301 arranged in the installation chamber 200, and a molded case circuit breaker 302 is installed on the drawer body 301, a static plug-in mounting plate 303 is also provided on the drawer body 301, and the static plug-in mounting plate 303 is fixedly connected to the inner wall of the installation chamber 200, a static plug-in shell 304 is also installed on the static plug-in mounting plate 303, and a static plug-in conductor 309 is installed in the static plug-in shell 304.

[0032] In addition, a moving plug-in housing 305 is also installed on the drawer body 301, and a moving plug-in conductor 306 is installed in the moving plug-in housing 305. A connecting copper busbar 307 is connected between the molded case circuit breaker 302 and the moving plug-in conductor 306. A moving plug-in contact 308 is also provided in the moving plug-in housing 305, and the moving plug-in conductor 306 and the static plug-in conductor 309 are plugged into the moving plug-in contact 308.

[0033] Furthermore, according to the attached Figure 4 As shown, a monitoring unit is provided on the moving plug-in conductor 306, and the monitoring unit includes a power-taking steel ring 310 sleeved on the moving plug-in conductor 306, and a circuit board 311 is provided on the power-taking steel ring 310 to power the circuit board 311 through the power-taking steel ring 310, and an antenna 312 and a temperature probe 313 are installed on the circuit board 311.

[0034] Among them, the power supply steel ring 310, the circuit board 311, the antenna 312 and the temperature probe 313 constitute a temperature sensor. The temperature sensor power supply is powered by CT, and the temperature sensor directly monitors the temperature at the plug-in connection. It should be noted here that CT refers to the current transformer, which is installed on the circuit board 311. The temperature sensor power supply is powered by CT, which uses the current transformer to obtain power and obtains power through the output port of the current transformer. In electrical engineering, current transformers are used to measure current and convert it into smaller, manageable current values ​​for monitoring, metering or protection.

[0035] It should be understood that the power-taking steel ring 310 is sleeved on the dynamic plug-in conductor 306. When current flows through, the power-taking steel ring 310 generates an induced current, so that the coil of the circuit board 311 generates an induced voltage, which serves as the power supply of the circuit board 311. The circuit board 311 is connected to a temperature probe 313, and the temperature probe 313 is closely attached to the surface of the dynamic plug-in conductor 306 and close to the plug-in interface of the dynamic plug-in contact 308. It can directly sense the temperature at the plug-in connection, and send the sensed temperature to the receiving device through the circuit board 311 via the antenna 312.

[0036] In summary, the power-taking steel ring 310, the circuit board 311, the antenna 312, and the temperature probe 313 are installed in the dynamic plug-in housing 305, and then installed as a whole in the drawer, and connected to the molded case circuit breaker 302 through the copper busbar 307. The other end of the dynamic plug-in conductor 306 is plugged into the static plug-in conductor 309, and the static plug-in conductor 309 is connected to the external cable.

[0037] In this embodiment, a heat dissipation unit is provided on the moving plug conductor 306, the static plug conductor 309 and the moving plug contact piece 308 to cool the inside of the moving plug conductor 306, the static plug conductor 309 and the moving plug contact piece 308 to avoid burning the plug.

[0038] In yet another embodiment, according to the attached Figure 5 and attached Figure 6 As shown, the heat dissipation unit includes a first heat dissipation mechanism 400, and the first heat dissipation mechanism 400 is arranged inside the movable plug-in contact piece 308, and the first heat dissipation mechanism 400 includes a heat dissipation fan 401 installed on the movable plug-in housing 305, and a heat dissipation sleeve 402 arranged in the movable plug-in contact piece 308, and a tapered tube 403 is installed between the air outlet end of the heat dissipation fan 401 and the heat dissipation sleeve 402. Among them, the wind direction of the heat dissipation fan 401 is guided by the tapered tube 403, so that the cold air flow enters the heat dissipation sleeve 402, and the heat dissipation sleeve 402 is also provided with a plurality of through holes 404 for diverting and guiding the heat dissipation air flow, so that the air flow enters from the tapered tube 403 and then is discharged from the through holes 404 on the heat dissipation sleeve 402, thereby performing heat dissipation treatment on the movable plug-in contact piece 308, the movable plug-in conductor 306 and the static plug-in conductor 309.

[0039] It should be noted that the dynamic plug contact 308 includes a plurality of contacts, and a gap is provided between each contact. The positions of the plurality of openings 404 correspond to the positions of the gaps on the dynamic plug contact 308 , so as to dissipate heat for the dynamic plug contact 308 .

[0040] When the cooling fan 401 is driven to work, the cooling fan 401 works to dissipate heat for the movable plug-in contact piece 308. When the movable plug-in contact piece 308 is dissipated, the cooling airflow is discharged from the through hole 404, passes through the gap position on the movable plug-in contact piece 308, and dissipates heat for the movable plug-in contact piece 308.

[0041] In addition, according to the attached Figure 6 As shown, the cooling airflow is blown toward the conical tube 403 through the heat dissipation fan 401. The cooling airflow is pressurized by utilizing the setting of the conical tube 403 having a wide upper part and a narrow lower part. The cooling airflow is ejected outward from the position of the through-port 404 through the setting of the through-port 404, so that the cooling airflow quickly passes through the movable plug-in contact piece 308, and the movable plug-in conductor 306 and the static plug-in conductor 309 are cooled.

[0042] In another embodiment, according to the attached Figure 7 As shown, the heat dissipation unit includes a second heat dissipation mechanism 500, and the second heat dissipation mechanism 500 is arranged on the dynamic plug-in conductor 306 and the static plug-in conductor 309. The second heat dissipation mechanism 500 includes a heat conductive plate 501 arranged on the dynamic plug-in conductor 306 and the static plug-in conductor 309. The heat conductive plate 501 is installed on the dynamic plug-in housing 305. The heat conductive plate 501 is made of insulating material, and the heat conductive plate 501 can use a ceramic insulating plate.

[0043] Specifically, the ceramic insulating plate is preferably an aluminum nitride plate. In the prior art, the aluminum nitride plate has good electrical insulation performance and high thermal conductivity, and is suitable for heat dissipation of high-power electronic devices.

[0044] It should be explained in detail that a water cooling tube 502 is provided on the heat conducting plate 501, and the water cooling tube 502 is arranged in an S-shaped structure, a plurality of heat dissipation fins 503 are installed on the water cooling tube 502, and the heat dissipation fins 503 and the heat conducting plate 501 are integrally formed, so that it is convenient to use the heat dissipation fins 503 to conduct the heat outward from the moving plug-in conductor 306 and the static plug-in conductor 309, and dissipate the heat from the heat dissipation fins 503 through the water cooling tube 502, so as to quickly cool the moving plug-in conductor 306 and the static plug-in conductor 309.

[0045] In addition, both ends of the water cooling tube 502 extend to the outside of the heat dissipation fin 503, one end of the two groups of water cooling tubes 502 is connected by a connecting tube 504, and the other end of the two groups of water cooling tubes 502 is respectively installed with a water inlet pipe 505 and a drain pipe 506. A boosting mechanism 507 is provided on the water inlet pipe 505 for boosting the coolant in the water inlet pipe 505 to improve the heat dissipation efficiency.

[0046] Furthermore, according to the attached Figure 8 and attached Fig. 9As shown, the boosting mechanism 507 includes a fixing frame 5071 installed on the movable plug-in housing 305, and a two-way pipe 5072 is symmetrically installed on the fixing frame 5071, and a first connecting port 5073 and a second connecting port 5074 are provided on the two-way pipe 5072, and the first connecting port 5073 is respectively connected to the water inlet pipe 505 and the drain pipe 506, and a connecting pipe 5075 is also installed on the movable plug-in housing 305, and the connecting pipe 5075 is connected to the second connecting port 5074.

[0047] It should be understood that, during operation, one group is connected to the liquid supply end of the coolant supply device, and the other group is connected to the liquid recovery end of the coolant supply device, so that the liquid inside the water-cooling tube 502 can circulate and cool the heat dissipating fins 503, making it easier for the heat dissipating fins 503 to dissipate heat for the moving plug-in conductor 306 and the static plug-in conductor 309.

[0048] Specifically, a connecting seat 5076 is installed on a group of two-way pipes 5072 close to the water inlet pipe 505, and a swing arm 5077 is rotatably connected to the connecting seat 5076 via a rotating shaft, and both ends of the swing arm 5077 away from the connecting seat 5076 are rotatably connected to a connecting rod 5078 via a rotating shaft, and one end of the connecting rod 5078 away from the swing arm 5077 is respectively connected to a first guide rod 5079 and a second guide rod 50711 via a rotating shaft.

[0049] In addition, a diaphragm 50710 is installed in a group of two-way tubes 5072 near the water inlet pipe 505, and a guide groove matched with the first guide rod 5079 is opened in the group of two-way tubes 5072 near the water inlet pipe 505, and the guide groove is slidably connected to the first guide rod 5079, and a diaphragm 50710 is installed at a position corresponding to the guide groove in the two-way tube 5072 to drive the first guide rod 5079 to squeeze the diaphragm 50710 to reduce the internal diameter of the two-way tube 5072.

[0050] When the second guide rod 50711 is driven to move, the second guide rod 50711 drives the end of the swing arm 5077 connected to it to move, so as to drive the swing arm 5077 to rotate on the connecting seat 5076, so that the swing arm 5077 controls the first guide rod 5079 to move, and the diaphragm 50710 is squeezed by the first guide rod 5079, so that the diaphragm 50710 is gradually expanded, thereby squeezing the internal space of the double-way tube 5072 to reduce the internal diameter of the double-way tube 5072, thereby increasing the coolant flow rate inside the water inlet pipe 505, so that the coolant quickly passes through the water-cooling pipe 502, and quickly takes away the coolant with a higher temperature, thereby achieving the effect of quickly cooling the water-cooling pipe 502 and quickly cooling the moving plug-in conductor 306 and the static plug-in conductor 309.

[0051] It should be supplemented that a limit block 50715 is installed on the first guide rod 5079, and a spring 50716 is provided on the first guide rod 5079, and one end of the spring 50716 is fixedly connected to the limit block 50715, and the other end of the spring 50716 is fixedly connected to the outer wall of the two-way pipe 5072. The spring 50716 is used to elastically connect the first guide rod 5079 and the two-way pipe 5072, so that when the first guide rod 5079 is squeezed, the spring 50716 has a restoring force, thereby assisting the first guide rod 5079 to reset.

[0052] It should be noted that a protrusion 3061 is further provided on the moving plug conductor 306, and a metal sheet 50712 is installed on the protrusion 3061, wherein an insulating layer is provided between the metal sheet 50712 and the protrusion 3061, and similarly, the insulating layer and the heat conducting plate 501 are made of the same ceramic material, the metal sheet 50712 includes a copper sheet and an iron sheet, the copper sheet and the iron sheet are fixedly connected, the iron sheet is located on a side close to the second guide rod 50711, and a deformation portion 50713 is provided on the metal sheet 50712. A notch 50714 is provided on the side where the metal sheet 50712 contacts the deformation end of the deformation part 50713. Through the matching arrangement of the notch 50714 and the deformation part 50713, when the metal sheet 50712 is deformed, the deformation part 50713 can be driven to move to squeeze the second guide rod 50711. The end of the second guide rod 50711 away from the connecting rod 5078 contacts the protrusion 3061, and the second guide rod 50711 is slidably connected to the inside of the fixing frame 5071.

[0053] When the joint between the moving plug-in conductor 306 and the stationary plug-in conductor 309 is overheated, the protrusion 3061 conducts the heat to the metal sheet 50712, causing the metal sheet 50712 to expand thermally. Since copper has a large thermal expansion coefficient, the copper sheet will expand earlier than the iron sheet, causing the length of the copper sheet to increase. Since the copper sheet and the iron sheet are connected, the expansion of the copper sheet will exert pressure on the iron sheet, causing it to bend to one side of the iron sheet, thereby causing the deformation portion 50713 to bend and squeeze the second guide rod 50711, causing the second guide rod 50711 to move.

[0054] An example of the present specific implementation mode is described above, but the present embodiment is not limited to the above-mentioned specific implementation mode, which is merely illustrative and not restrictive. A person skilled in the art may make many forms inspired by the present embodiment, all of which are protected by the present embodiment.

Claims

1. A low-voltage distribution cabinet with monitoring function, characterized in that: include: Low voltage cabinet (100); An installation chamber (200) is arranged inside the low-voltage cabinet (100); A drawer unit (300), the drawer unit (300) comprising a drawer body (301) arranged in an installation chamber (200), a molded case circuit breaker (302) being installed on the drawer body (301), a static plug-in installation plate (303) being further provided on the drawer body (301), a static plug-in shell (304) being further provided on the static plug-in installation plate (303), a static plug-in conductor (309) being installed in the static plug-in shell (304); a movable plug-in shell (305) being further provided on the drawer body (301), a movable plug-in conductor (306) being installed in the movable plug-in shell (305), a connecting copper busbar (307) being connected between the molded case circuit breaker (302) and the movable plug-in conductor (306), a movable plug-in contact piece (308) being further provided in the movable plug-in shell (305), and the movable plug-in conductor (306) and the static plug-in conductor (309) being plugged into the movable plug-in contact piece (308); A monitoring unit, the monitoring unit comprising a power-taking steel ring (310) sleeved on the moving plug-in conductor (306), a circuit board (311) being provided on the power-taking steel ring (310), and an antenna (312) and a temperature probe (313) being installed on the circuit board (311); A heat dissipation unit is used to cool the interior of the moving plug-in conductor (306), the stationary plug-in conductor (309) and the moving plug-in contact piece (308) to avoid burning the plug-in; The heat dissipation unit comprises a second heat dissipation mechanism (500), and the second heat dissipation mechanism (500) is arranged on the moving plug-in conductor (306) and the static plug-in conductor (309), the second heat dissipation mechanism (500) comprises a heat conduction plate (501) arranged on the moving plug-in conductor (306) and the static plug-in conductor (309), the heat conduction plate (501) is installed on the moving plug-in housing (305), a water cooling pipe (502) is arranged on the heat conduction plate (501), and a A plurality of heat dissipation fins (503), both ends of the water cooling tube (502) extending to the outside of the heat dissipation fins (503), one end of the two groups of water cooling tubes (502) being connected via a connecting tube (504), and the other ends of the two groups of water cooling tubes (502) being respectively installed with a water inlet pipe (505) and a drain pipe (506), and a pressurizing mechanism (507) being provided on the water inlet pipe (505) for pressurizing the coolant in the water inlet pipe (505) to improve the heat dissipation efficiency; The boost mechanism (507) comprises a fixing frame (5071) mounted on the movable plug-in housing (305), and a two-way pipe (5072) is symmetrically mounted on the fixing frame (5071), and a first connecting port (5073) and a second connecting port (5074) are provided on the two-way pipe (5072), and the first connecting port (5073) is respectively connected to the water inlet pipe (505) and the drain pipe (506), and a connecting pipe (5075) is also mounted on the movable plug-in housing (305), and the connecting pipe (5075) is connected to the second connecting port (5074).

2. A low-voltage distribution cabinet with monitoring function according to claim 1, characterized in that: The heat dissipation unit comprises a first heat dissipation mechanism (400), and the first heat dissipation mechanism (400) is arranged inside a movable plug-in contact piece (308), and the first heat dissipation mechanism (400) comprises a heat dissipation fan (401) installed on a movable plug-in housing (305), and a heat dissipation sleeve (402) arranged inside the movable plug-in contact piece (308), and a conical tube (403) is installed between the air outlet end of the heat dissipation fan (401) and the heat dissipation sleeve (402).

3. A low-voltage distribution cabinet with monitoring function according to claim 2, characterized in that: The heat dissipation sleeve (402) is also provided with a plurality of openings (404) for diverting and guiding the heat dissipation airflow.

4. A low-voltage distribution cabinet with monitoring function according to claim 3, characterized in that: The movable plug-in contact piece (308) comprises a plurality of contact pieces, and a gap is provided between each contact piece. The positions of the plurality of through openings (404) correspond one-to-one to the positions of the gaps on the movable plug-in contact piece (308), so as to perform heat dissipation treatment on the movable plug-in contact piece (308).

5. The low-voltage distribution cabinet with monitoring function according to claim 1, characterized in that: A connecting seat (5076) is installed on a group of two-way pipes (5072) close to the water inlet pipe (505), and a swing arm (5077) is rotatably connected to the connecting seat (5076) via a rotating shaft. Both ends of the swing arm (5077) away from the connecting seat (5076) are rotatably connected to a connecting rod (5078) via a rotating shaft, and one end of the connecting rod (5078) away from the swing arm (5077) is rotatably connected to a first guide rod (5079) and a second guide rod (50711) via a rotating shaft.

6. A low-voltage power distribution cabinet with monitoring function according to claim 5, characterized in that: A diaphragm (50710) is installed in a group of two-way tubes (5072) close to the water inlet pipe (505); a guide groove matched with the first guide rod (5079) is opened in the group of two-way tubes (5072) close to the water inlet pipe (505), and the guide groove is slidably connected to the first guide rod (5079); a diaphragm (50710) is installed at a position corresponding to the guide groove in the two-way tube (5072) to drive the first guide rod (5079) to squeeze the diaphragm (50710) to reduce the internal diameter of the two-way tube (5072).

7. The low-voltage distribution cabinet with monitoring function according to claim 5, characterized in that: A limit block (50715) is installed on the first guide rod (5079), and a spring (50716) is provided on the first guide rod (5079).

8. The low-voltage distribution cabinet with monitoring function according to claim 5, characterized in that: The movable plug conductor (306) is also provided with a protrusion (3061), and a metal sheet (50712) is mounted on the protrusion (3061). A deformation portion (50713) is provided on the metal sheet (50712). A notch (50714) is provided on the side of the metal sheet (50712) that contacts the deformation end of the deformation portion (50713). An end of the second guide rod (50711) that is away from the connecting rod (5078) contacts the protrusion (3061).

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