Switch cabinet with partial discharge on-line monitoring structure and monitoring method thereof

Abstract

The invention discloses a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof, and relates to the technical field of switch cabinet monitoring, the switch cabinet comprises a main body, a partition plate, a plurality of buses, a plurality of temperature monitoring assemblies, a plurality of gas monitoring assemblies and a plurality of buzzer alarms, the upper part of the main body is fixedly connected with the partition plate, and each temperature monitoring assembly comprises a shell I; an inner cavity of the first shell is filled with a thermal expansion medium, and the middle of the first shell is fixedly connected with a heat conduction wire. When the pressure in the inner cavity of the first shell is larger than the gravity of a second piston, the second piston can be pushed to move towards the side away from the first shell, so that the second piston can be pushed to apply acting force to a key switch installed at the upper end of a second connecting plate, the corresponding buzzing alarm can be controlled to operate, and buzzing alarm is given out; therefore, a worker can be reminded of the continuous partial discharge phenomenon of the bus at the position.

Description

Technical Field

[0001] The present invention relates to the technical field of switch cabinet monitoring, and in particular to a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. Background Art

[0002] Partial discharge refers to the non-penetrating discharge phenomenon that occurs in some areas of the insulation system of electrical equipment due to uneven electric field distribution or defects in the insulating material. Although this phenomenon is small in scale, its long-term existence will gradually erode the insulating material, accelerate the aging of the equipment, and may even cause insulation breakdown, posing a serious threat to the safe and stable operation of the power system. In the power system, the switchgear is a key distribution equipment, and its internal structure design is of vital importance. Among them, the busbar room is usually carefully arranged on the upper back of the switchgear to install and support the high-voltage busbar. The busbar is the "main artery" of power transmission, and its operating status is directly related to the stability and efficiency of the entire power system. However, during the operation of the busbar, partial discharge may be caused due to factors such as uneven distribution of electric field strength, accumulation of dirt on the busbar surface, aging of insulating materials or manufacturing defects.

[0003] Busbar partial discharge will not only lead to the degradation of insulation performance, but may also trigger arc discharge, causing serious damage to the busbar and its surrounding equipment. What is more serious is that the heat and electromagnetic radiation generated by partial discharge may accelerate equipment aging, shorten equipment service life, and even cause serious accidents such as fire or explosion. Therefore, real-time monitoring and early warning of busbar partial discharge are crucial.

[0004] The existing switch cabinet partial discharge detection technology is that the staff uses a handheld switch cabinet partial discharge detector to perform ultrasonic discharge signal detection of the switch cabinet according to the established standard operating procedures. There are obvious shortcomings in the test: when the test point is relatively high, the tester needs to use an insulating ladder. Working at high altitudes not only increases the danger of the work, but also has low detection efficiency.

[0005] In the prior art, a Chinese patent for a switch cabinet partial discharge monitoring device (publication number CN115166447B) which is easy to use is proposed to solve the above-mentioned technical problems. The technical solution disclosed in the patent document is as follows: "It includes a mobile trolley, a battery, a winding mechanism, a walking detection mechanism, a PLC controller and a display. The mobile trolley is provided with a box body, and the box body is provided with a battery, a winding mechanism and a PLC controller. The battery, the winding mechanism and the display are all electrically connected to the PLC controller. The walking detection mechanism is electrically connected to the PLC controller through the wire wound on the winding mechanism. The winding mechanism includes an automatic winding machine and a wire feeding device. The wire feeding device is used to pull out the wire wound on the automatic winding machine and convey the pulled wire to the automatic winding machine. The walking detection mechanism includes two walking mechanisms, a sliding drive mechanism and a discharge detection sensor." In this solution, by providing support mechanisms on both walking mechanisms, providing a sliding drive mechanism between the two walking mechanisms, providing a discharge detection sensor on the sliding drive mechanism, providing a walking belt on the walking drive mechanism, and embedding magnets arranged at intervals on the walking belt, the walking mechanism drives the discharge detection sensor to move along the height direction of the switch cabinet, thereby avoiding the danger of workers falling and improving the detection efficiency. The automatic wire reel (31) and the wire feeding device cooperate to release and reel in the wire, without the need for manual operation, thus reducing the manual workload, being easy to use, and avoiding the wires being dragged on the ground. However, this method still needs to rely on manual inspection. However, this monitoring method has limitations. Specifically, the busbar room is usually arranged at the upper back of the switch cabinet. This position is relatively hidden, which brings challenges to the monitoring work. What is more complicated is that during the normal operation of the switch cabinet, the temperature in the busbar room often rises. This temperature change is very likely to interfere with the monitoring results, resulting in frequent false alarms. Therefore, when local discharge actually occurs, manual inspection often finds it difficult to quickly and accurately locate the specific discharge point. This situation not only affects the monitoring efficiency, but also brings inconvenience to the timely maintenance and troubleshooting of the equipment. Summary of the invention

[0006] The object of the present invention is to provide a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof, so as to solve the problem that during the normal operation of the switch cabinet, the temperature in the busbar room tends to rise. This temperature change can easily interfere with the monitoring results, resulting in frequent false alarms, which leads to the problem that when partial discharge actually occurs, manual inspections are often difficult to quickly and accurately locate the specific discharge point.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: A switch cabinet with a partial discharge online monitoring structure comprises a main body, a partition, a plurality of busbars, a plurality of temperature monitoring components, a gas monitoring component and a plurality of buzzer alarms, wherein the upper part of the main body is fixedly connected to the partition; the temperature monitoring component comprises a shell 1, wherein a lower end of the shell is fixedly connected to an upper end of the partition, an inner cavity of the shell 1 is filled with a thermal expansion medium, a heat conducting wire is fixedly connected to the middle part of the shell 1, a heat conducting sheet is fixedly connected to the side of the heat conducting wire close to the busbar, and the heat conducting sheet is closely fitted to the outer surface of the adjacent busbar; An air distribution pipe 1 is fixedly connected to one side of the shell 1 away from the busbar, and the inner cavity of the air distribution pipe 1 is communicated with the inner cavity of the shell 1, a piston 1 is slidably connected to the inner cavity of the air distribution pipe 1, a sealing plate is fixedly connected to the middle of the inner cavity of the air distribution pipe 1, the piston 1 is slidably connected to the sealing plate, a side of the inner cavity of the air distribution pipe 1 away from the shell 1 is filled with liquid, an upper side of the shell 1 is fixedly connected to an air distribution pipe 2, and the inner cavity of the air distribution pipe 2 is communicated with the inner cavity of the shell 1, a piston 2 is slidably connected to the middle of the air distribution pipe 2, and a connecting plate 2 is fixedly connected to one side of the upper end of the shell 1 close to the air distribution pipe 2; One side of the upper part of the main body is fixedly connected to a plurality of buzzer alarms, a collecting assembly is arranged on one side of the upper part of the main body, the collecting assembly is used to store exhaust gas, a driving assembly is arranged on one side of the upper part of the main body, the driving assembly is used to provide power for the gas monitoring assembly to extract gas, the gas monitoring assembly close to the partition side is fixedly connected to the partition, and the gas monitoring assembly away from the partition side is fixedly connected to the upper part of the main body.

[0008] By adopting the above technical scheme, a heat expansion medium is filled in the inner cavity of the shell one, and the heat expansion medium can be anhydrous methanol liquid or anhydrous acetone liquid; when the busbar has a continuous partial discharge, the electric energy is released in the form of heat, causing the temperature of the busbar to rise rapidly in a short period of time, and then the heat energy is transferred to the heat conducting wire by the heat conducting sheet, and then the heat conducting wire is used to transfer the heat to the inner cavity of the shell one, and the heat expansion medium filled in the inner cavity of the shell one is quickly heated, so that the heat expansion medium expands rapidly, causing the pressure in the inner cavity of the shell one to increase, and then under the action of the pressure, the piston one is pushed to move toward the side away from the busbar, but because the piston one is opened The small hole is small, so that the liquid filled in the inner cavity of the gas distribution pipe 1 cannot be quickly exchanged through the small hole, which causes the movement speed of the piston 1 to be slow, and the thermal expansion medium in the inner cavity of the shell 1 is continuously heated, causing the pressure in the inner cavity of the shell 1 to continuously increase. Then, when the pressure in the inner cavity of the shell 1 is greater than the gravity of the piston 2, the piston 2 can be pushed to move toward the side away from the shell 1, thereby pushing the piston 2 to apply a force to the key switch installed on the upper end of the connecting plate 2, and can control the corresponding buzzer alarm to operate and send out a buzzer alarm, thereby reminding the staff that the bus at this position has continuous partial discharge.

[0009] A further improvement of the technical solution of the present invention is that: the gas monitoring component includes a second shell, a detection tube is fixedly connected to the middle part of the second shell, the detection tube passes through the side of the adjacent baffle away from the busbar and extends to the side of the baffle close to the busbar, an ozone detection sensor is fixedly connected to the side of the second shell close to the busbar, and the detection end of the ozone detection sensor passes through the second end face of the shell and the outer surface of the detection tube in sequence and extends to the inner cavity of the detection tube, a gas supply pipe 1 is fixedly connected to the side of the detection tube away from the busbar, the side of the gas supply pipe 1 away from the busbar passes through the inner cavity of the second shell and extends to the outer surface of the second shell, a piston 3 is slidably connected to the inner cavity of the detection tube, a mounting block is fixedly connected to the side of the detection tube close to the busbar, and a one-way valve 1 is fixedly connected to the middle of the mounting block.

[0010] A further improvement of the technical solution of the present invention is that a plurality of ultraviolet lamps are fixedly connected to the second inner cavity of the shell, and the detection tube is made of transparent glass material.

[0011] A further improvement of the technical solution of the present invention is that: a discharge pipe is fixedly connected to one side of the second shell, and the side of the discharge pipe close to the detection tube successively penetrates the second end surface of the shell and the outer surface of the detection tube and extends to the inner cavity of the detection tube, and a one-way valve 2 is fixedly connected to the side of the inner cavity of the discharge pipe close to the detection tube.

[0012] A further improvement of the technical solution of the present invention is that: a plurality of semi-enclosed components are arranged at the upper end of the main body, the semi-enclosed components include two support plates 1 and two shielding plates, a lower end of the two support plates is fixedly connected to the upper end of the partition, the two support plates 1 are symmetrically fixedly connected with guide rods, the outer surface of the guide rods are wound with springs 1, the inner cavities of the two support plates 1 are symmetrically slidably connected with sliders, the guide rods on the same side are slidably connected to the sliders, the side of the spring 1 on the same side close to the slider is fixedly connected to the slider, the side of the spring 1 on the same side away from the slider is fixedly connected to the inner wall of the support plate 1, the upper end of the shielding plate is fixedly connected to the lower ends of the two adjacent sliders, there is a certain gap between the upper ends of the two shielding plates and the busbar, and the side of the thermal wire close to the busbar is slidably connected to the adjacent shielding plates.

[0013] A further improvement of the technical solution of the present invention is that: the driving component includes an air pump and two pneumatic integrated valves, the air pump is fixedly connected to the main body, the pneumatic integrated valve is fixedly connected to the main body, the output end of the air pump is fixedly connected to gas pipe three, the air inlets of the two pneumatic integrated valves are commonly fixedly connected to a diverter pipe, the diverter pipe is fixedly connected to gas pipe three, the air outlets of the pneumatic integrated valves are fixedly connected to gas pipe four, and the output end of gas pipe four is fixedly connected to the input end of the adjacent gas pipe one.

[0014] A further improvement of the technical solution of the present invention is that the collecting component includes a connecting plate three, a plurality of springs two and a plurality of storage tubes, the connecting plate three is fixedly connected to the main body, a plurality of gas pipes two are fixedly connected to the middle part of the connecting plate three, a support plate two is symmetrically fixedly connected to the upper end of the connecting plate three, a splint is fixedly connected to one side of the spring two close to the storage tube, a side of the spring two away from the storage tube is fixedly connected to the adjacent support plate two, and the input end of the gas pipe two is fixedly connected to the output end of the adjacent gas pipe.

[0015] A further improvement of the technical solution of the present invention is that the heat conducting sheet is arranged in a U shape, and the heat conducting wire is arranged in a spiral shape in an inner cavity of the shell.

[0016] The present invention also provides a switch partial discharge monitoring method, comprising the following steps: S1, the slider is pushed to slide in the direction of the busbar by the elastic force of spring 1, driving the shield to slide in the direction of the busbar to form a semi-enclosed space; S2, by rapidly heating the heat expansion medium in the inner cavity of the shell 1 to make it evaporate, and then push the piston 2 to slide in the inner cavity of the gas distribution pipe 2 toward the connecting plate 2; S3, the air pump is running to extract the gas in the inner cavity of the gas transmission pipe 3, and then drives the gas in the inner cavity of the gas transmission pipe 4 to flow, and then drives the gas in the inner cavities of the gas transmission pipe 1 and the detection pipe to flow, drives the piston 3 to move toward the side away from the busbar, and drives the detection pipe to extract the gas in the inner cavity of the semi-enclosed component; S4. By running the ultraviolet lamp, the nitric oxide and nitrogen dioxide in the inner cavity of the detection tube are accelerated to be converted into ozone, and then the ozone detection sensor is used to detect it. At the same time, the detection data is transmitted to the data center for comparison to determine whether continuous partial discharge occurs in the bus at that location; S5. The air pump is operated to deliver gas to the inner cavity of the gas delivery pipe 3, so as to push the gas in the inner cavity of the gas delivery pipe 4 and the gas in the inner cavity of the gas delivery pipe 1 to flow into the inner cavity of the detection pipe, and the piston 3 is pushed to slide in the direction of the busbar, so as to push the detected waste gas in the inner cavity of the detection pipe into the inner cavity of the separation pipe, and the waste gas is delivered to the inner cavity of the receiving pipe through the gas delivery pipe 2; Due to the adoption of the above technical solution, the present invention has the following technical advances compared with the prior art: 1. The present invention provides a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. When a busbar has a continuous partial discharge, the electric energy is released in the form of heat, causing the busbar temperature to rise rapidly in a short period of time. Then, the heat energy is transferred to the heat conducting wire by using the heat conducting sheet, and then the heat conducting wire is used to transport the heat to the inner cavity of the shell. The heat expansion medium filled in the inner cavity of the shell is quickly heated, so that the heat expansion medium expands rapidly, causing the pressure in the inner cavity of the shell to increase. Then, under the action of the pressure, the piston is pushed to move toward the side away from the busbar. However, since the small hole opened on the piston is small, the piston is moved from the inner cavity of the shell to the inner cavity of the shell. As a result, the liquid filled in the inner cavity of the gas distribution pipe 1 cannot be quickly exchanged through the small hole, which causes the movement speed of piston 1 to be slow, and the thermal expansion medium in the inner cavity of the shell 1 is continuously heated, causing the pressure in the inner cavity of the shell 1 to continuously increase. Then, when the pressure in the inner cavity of the shell 1 is greater than the gravity of the piston 2, the piston 2 can be pushed to move toward the side away from the shell 1, thereby pushing the piston 2 to apply a force to the button switch installed on the upper end of the connecting plate 2, and can control the corresponding buzzer alarm to operate and sound a buzzer alarm, thereby reminding the staff that continuous partial discharge has occurred in the busbar at that position.

[0017] 2. The present invention provides a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. When partial discharge occurs on the bus, in addition to rapid temperature rise in a short time, ozone and nitrogen oxides will also be generated. By forming a semi-enclosed space at the bottom of the bus, ozone and nitrogen oxides can be gathered in this semi-enclosed space, which can prevent ozone and nitrogen oxides from diffusing outward in a short time, resulting in a decrease in the concentration of ozone and nitrogen oxides generated at the location where the partial discharge occurs on the bus, thereby affecting the sampling detection results of the gas monitoring component and improving the accuracy of the detection.

[0018] 3. The present invention provides a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. A plurality of ultraviolet lamps are fixedly connected in the second inner cavity of the outer shell, so that the ultraviolet rays generated by the ultraviolet lamps when in operation can be used to irradiate the gas in the inner cavity of the detection tube. Nitric oxide and nitrogen dioxide are accelerated to be converted into ozone under the irradiation of ultraviolet rays, and then the concentration of ozone in the inner cavity of the detection tube can be enhanced. Then, the ozone in the inner cavity of the detection tube can be monitored by an ozone detection sensor, and the monitoring result can be transmitted to a data center. Then, the data transmitted by the ozone detection sensors at different heights at the same position can be compared by the data center, and then it can be determined whether a continuous partial discharge occurs at the busbar at that position. By comparing the different data at the detection location, the accuracy of the detection result can be further improved.

[0019] 4. The present invention provides a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. The detection tube is made of transparent glass material, so that the ultraviolet rays generated when the ultraviolet lamp is running can irradiate the gas in the inner cavity of the detection tube, thereby improving the irradiation efficiency and the speed at which nitric oxide and nitrogen dioxide are converted into ozone under the irradiation of ultraviolet rays, thereby shortening the waiting time required for detection and improving the speed of the online monitoring reaction of the device.

[0020] 5. The present invention provides a switch cabinet with a partial discharge online monitoring structure and a monitoring method thereof. By setting the heat conductive sheet to a U shape, the contact area between the heat conductive sheet and the busbar can be enhanced. Then, when partial discharge occurs in the busbar, the temperature generated can be quickly transferred to the heat conductive sheet, and then the temperature is transmitted to the heat conductive wire by using the heat conductive sheet. By setting the heat conductive wire to a spiral shape, the contact area between the heat conductive wire and the heat expansion medium can be increased, thereby accelerating the heat absorption of the heat expansion medium, and then enabling it to quickly heat up and expand, thereby improving its reaction sensitivity. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 The overall structure of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the present invention is shown in FIG. Figure 2 ; Figure 3 The overall structure of the present invention is shown in FIG. Figure 3 ; Figure 4 It is a schematic diagram of the local structure of the present invention Figure 1 ; Figure 5 It is a schematic diagram of the local structure of the present invention Figure 2 ; Figure 6 The temperature monitoring component of the present invention is shown in FIG. Figure 1 ; Figure 7 The temperature monitoring component of the present invention is shown in FIG. Figure 2 ; Figure 8 The gas monitoring component of the present invention is shown in FIG. Figure 1 ; Fig. 9 The gas monitoring component of the present invention is shown in FIG. Figure 2 ; Fig.10 The gas monitoring component of the present invention is shown in FIG. Figure 3 ; Fig.11 The driving assembly of the present invention is shown in FIG. Figure 1 ; Fig.12 The driving assembly of the present invention is shown in FIG. Figure 2 ; Fig.13 Schematic diagram of the collection component of the present invention Figure 1 ; Fig.14 Schematic diagram of the collection component of the present invention Figure 2 ; Fig.15 It is a schematic diagram of a semi-enclosed component of the present invention; Fig.16 It is an enlarged schematic diagram of the semi-enclosed component A of the present invention.

[0023] In the figure: 1. Main body; 11. Partition; 2. Busbar; 3. Temperature monitoring component; 31. Shell 1; 32. Heat conducting wire; 33. Heat conducting sheet; 34. Gas distribution pipe 1; 35. Piston 1; 36. Sealing plate; 37. Gas distribution pipe 2; 38. Piston 2; 39. Connecting plate 2; 4. Semi-enclosed component; 41. Support plate 1; 42. Guide rod; 43. Slider; 44. Spring 1; 45. Shield; 5. Gas monitoring component; 51. Shell 2; 52. Ozone detection sensor; 53 , separation pipe; 54, detection tube; 541, mounting block; 542, one-way valve one; 55, gas pipe one; 56, piston three; 57, one-way valve two; 58, ultraviolet lamp; 6, collecting component; 61, connecting plate three; 62, gas pipe two; 63, supporting plate two; 64, spring two; 65, splint; 66, storage tube; 7, buzzer alarm; 8, driving component; 81, air pump; 82, gas pipe three; 83, shunt pipe; 84, pneumatic integrated valve; 85, gas pipe four. DETAILED DESCRIPTION

[0024] The present invention is further described in detail below in conjunction with embodiments: Example 1 like Figure 1-Figure 7 As shown, the present invention provides a switch cabinet with a partial discharge online monitoring structure, including a main body 1, a partition 11, a plurality of busbars 2, a plurality of temperature monitoring components 3, a gas monitoring component 5 and a plurality of buzzer alarms 7, wherein the upper part of the main body 1 is fixedly connected to the partition 11; the temperature monitoring component 3 includes a shell 31, the lower end of the shell 31 is fixedly connected to the upper end of the partition 11, the inner cavity of the shell 31 is filled with a thermal expansion medium, a heat conductive wire 32 is fixedly connected to the middle part of the shell 31, a heat conductive sheet 33 is fixedly connected to the side of the heat conductive wire 32 close to the busbar 2, and the heat conductive sheet 33 is tightly fitted to the outer surface of the adjacent busbar 2; A gas distribution pipe 1 34 is fixedly connected to the side of the shell 1 31 away from the busbar 2, and the inner cavity of the gas distribution pipe 1 34 is communicated with the inner cavity of the shell 1 31, a piston 1 35 is slidably connected to the inner cavity of the gas distribution pipe 1 34, a sealing plate 36 is fixedly connected to the middle of the inner cavity of the gas distribution pipe 1 34, the piston 1 35 is slidably connected to the sealing plate 36, the inner cavity of the gas distribution pipe 1 34 away from the shell 1 31 is filled with liquid, a gas distribution pipe 2 37 is fixedly connected to one side of the upper part of the shell 1 31, and the inner cavity of the gas distribution pipe 2 37 is communicated with the inner cavity of the shell 1 31, a piston 2 38 is slidably connected to the middle of the gas distribution pipe 2 37, and a connecting plate 2 39 is fixedly connected to the side of the upper end of the shell 1 31 close to the gas distribution pipe 2 37; One side of the upper part of the main body 1 is fixedly connected to a plurality of buzzer alarms 7, and a collecting component 6 is provided on one side of the upper part of the main body 1. The collecting component 6 is used to store exhaust gas, and a driving component 8 is provided on one side of the upper part of the main body 1. The driving component 8 is used to provide power for the gas monitoring component 5 to extract gas. The gas monitoring component 5 close to the partition 11 is fixedly connected to the partition 11, and the gas monitoring component 5 away from the partition 11 is fixedly connected to the upper part of the main body 1.

[0025] In this embodiment, a heat expansion medium is filled in the inner cavity of the shell one, the inner cavity of the heat conducting plate is closely fitted with the outer surface of the busbar, and the side of the heat conducting wire close to the heat conducting plate is fixedly connected to the heat conducting plate. When the components inside the switch cabinet are operating normally, the temperature inside the cabinet will gradually increase, and then the heat conducting plate will transfer the heat energy to the heat conducting wire, and then the heat conducting wire will transfer the heat to the inner cavity of the shell one to heat the heat expansion medium filled in the inner cavity of the shell one. Then the heat expansion medium in the inner cavity of the shell one will gradually increase in temperature after being heated, and then the heat expansion medium will gradually expand due to heat. When the components inside the switch cabinet are operating normally, the temperature inside the cabinet rises slowly, which leads to a slow expansion speed of the heat expansion medium. Since small holes are opened on the piston one, the liquid filled in the inner cavity of the gas distribution pipe one can flow through the two small holes, so that when the piston one is slowly pushed to move, the resistance encountered by the piston one is less than the gravity of the piston two, thereby driving the piston one to move; When a busbar has a continuous partial discharge, electrical energy is released in the form of heat, causing the busbar temperature to rise rapidly in a short period of time, and then the heat is transferred to the heat conducting wire by means of a heat conducting sheet, which then transports the heat to the inner cavity of the shell one, rapidly heating the heat expansion medium filled in the inner cavity of the shell one, causing the heat expansion medium to expand rapidly. Since the small hole on the piston one is small, the liquid filled in the inner cavity of the gas distribution pipe one cannot be quickly exchanged through the small hole, and then the resistance of the liquid on the piston one is greater than the gravity of the piston two. Since the piston one cannot move quickly toward the side away from the shell one, the heat expansion medium will move toward the direction of the piston two, and then the piston two will be pushed to move toward the side away from the shell one, thereby pushing the piston two to apply a force to the key switch installed on the upper end of the connecting plate two, and the corresponding buzzer alarm can be controlled to operate and sound a buzzer alarm, thereby reminding the staff that a continuous partial discharge has occurred on the busbar at that position.

[0026] Example 2 like Figure 6 , Figure 7 , Fig.15 and Fig.16 As shown, on the basis of Example 1, the present invention provides a technical solution: preferably, a plurality of semi-enclosed components 4 are arranged at the upper end of the main body 1, and the semi-enclosed components 4 include two support plates 41 and two shielding plates 45, the lower ends of the two support plates 41 are fixedly connected to the upper end of the partition 11, the two support plates 41 are symmetrically fixedly connected with guide rods 42, the outer surfaces of the guide rods 42 are wound and connected with springs 44, the inner cavities of the two support plates 41 are symmetrically slidably connected with sliders 43, the guide rods 42 on the same side are slidably connected to the sliders 43, the side of the spring 44 on the same side close to the slider 43 is fixedly connected to the slider 43, and the side of the spring 44 on the same side away from the slider 43 is fixedly connected to the inner wall of the support plate 41, the upper end of the shielding plate 45 is fixedly connected to the lower ends of the two adjacent sliders 43, there is a certain gap between the upper parts of the two shielding plates 45 and the busbar 2, and the side of the thermal wire 32 close to the busbar 2 is slidably connected to the adjacent shielding plates 45; The heat conducting sheet 33 is arranged in a U shape, and the heat conducting wire 32 is arranged in a spiral shape in the inner cavity of the shell 1 31 .

[0027] In this embodiment, the elastic force of the spring 1 44 can push the slider 43 to slide in the inner cavity of the support plate 1 41, and then drive the shield 45 to slide toward the direction of the busbar 2, so that the support plate 1 41 and the shield 45 can cooperate to form a semi-enclosed space, and the busbar 2 is continuously discharged, and the surface temperature of the busbar 2 is accelerated in a short time, and ozone and nitrogen oxides are generated at the same time. By using the busbar 2 to form a semi-enclosed space, the high temperature generated by the continuous partial discharge of the busbar 2 and the speed of the outward diffusion of ozone and nitrogen oxides can be slowed down; By making the heat conductive sheet 33 fit tightly against the surface of the busbar 2, the heat conductive sheet 33 can be used to transfer heat energy to the heat conductive wire 32, and the heat conductive wire 32 is used to transfer heat to the inner cavity of the shell 31, so as to quickly heat the heat expansion medium filled in the inner cavity of the shell 31, so that its temperature can be quickly increased and then expanded. Since the small hole opened on the piston 1 35 is small, the liquid filled in the inner cavity of the gas distribution pipe 1 34 cannot be quickly exchanged through the small hole, and then the resistance of the liquid on the piston 1 35 is greater than the gravity of the piston 2 38. Since the piston 1 35 cannot move quickly toward the side away from the shell 1 31, the heat expansion medium will move toward the direction of the piston 2 38, and then the piston 2 38 can be pushed to move toward the side away from the shell 1 31, so that the piston 2 38 can be pushed to apply a force to the key switch installed on the upper end of the connecting plate 2 39, and the corresponding buzzer alarm 7 can be controlled to operate and emit a buzzer alarm, so as to remind the staff that the busbar 2 at that position has a continuous partial discharge phenomenon.

[0028] Example 3 like Figure 8-Figure 12 As shown, on the basis of Example 2, the present invention provides a technical solution: preferably, the driving assembly 8 includes an air pump 81 and two pneumatic integrated valves 84, the air pump 81 is fixedly connected to the main body 1, the pneumatic integrated valve 84 is fixedly connected to the main body 1, the output end of the air pump 81 is fixedly connected to the air delivery pipe 3 82, the air inlets of the two pneumatic integrated valves 84 are commonly fixedly connected to the shunt pipe 83, the shunt pipe 83 is fixedly connected to the air delivery pipe 3 82, the air outlets of the pneumatic integrated valves 84 are fixedly connected to the air delivery pipe 4 85, and the output end of the air delivery pipe 4 85 is fixedly connected to the input end of the adjacent air delivery pipe 1 55; The gas monitoring assembly 5 includes a second shell 51, a detection tube 54 is fixedly connected to the middle of the second shell 51, the detection tube 54 penetrates the side of the adjacent baffle 45 away from the busbar 2 and extends to the side of the baffle 45 close to the busbar 2, an ozone detection sensor 52 is fixedly connected to the side of the second shell 51 close to the busbar 2, and the detection end of the ozone detection sensor 52 penetrates the end face of the second shell 51 and the outer surface of the detection tube 54 in sequence and extends to the inner cavity of the detection tube 54, a gas transmission pipe 1 55 is fixedly connected to the side of the detection tube 54 away from the busbar 2, and the side of the gas transmission pipe 1 55 away from the busbar 2 penetrates the inner cavity of the second shell 51 and extends to the outer surface of the second shell 51, a piston 3 56 is slidably connected to the inner cavity of the detection tube 54, a mounting block 541 is fixedly connected to the side of the detection tube 54 close to the busbar 2, and a one-way valve 1 542 is fixedly connected to the middle of the mounting block 541; A plurality of ultraviolet lamps 58 are fixedly connected to the inner cavity of the second housing 51, and the detection tube 54 is made of transparent glass material; A discharge pipe 53 is fixedly connected to one side of the second shell 51, and the side of the discharge pipe 53 close to the detection tube 54 passes through the end face of the second shell 51 and the outer surface of the detection tube 54 in sequence and extends to the inner cavity of the detection tube 54. A one-way valve 2 57 is fixedly connected to the side of the inner cavity of the discharge pipe 53 close to the detection tube 54.

[0029] In this embodiment, at the same time, the air pump 81 is operated, and then the air pump 81 is used to extract the gas in the inner cavity of the gas pipe three 82, and then the gas in the inner cavity of the gas pipe four 85 can be driven to flow into the inner cavity of the gas pipe three 82, and at the same time, the gas in the inner cavities of the detection tube 54 and the gas pipe one 55 can be driven to flow into the inner cavity of the gas pipe four 85, so that the piston three 56 can be driven to slide in the inner cavity of the detection tube 54, and then the detection tube 54 is driven to extract the gas in the inner cavity of the semi-enclosed component 4, and the ozone and nitrogen oxides in the semi-enclosed space as well as other gases can be extracted into the inner cavity of the detection tube 54, and the detection tube 54 located at the upper part of the main body 1 will draw the air in the upper part of the busbar chamber into the inner cavity. In the cavity, a plurality of ultraviolet lamps 58 are fixedly connected in the inner cavity of the shell 2 51, so that the ultraviolet rays generated by the ultraviolet lamps 58 when in operation can irradiate the gas in the inner cavity of the detection tube 54, and nitric oxide and nitrogen dioxide will be accelerated to be converted into ozone under the irradiation of ultraviolet rays, and then the concentration of ozone in the inner cavity of the detection tube 54 can be enhanced, and then the ozone in the inner cavity of the detection tube 54 can be monitored by the ozone detection sensor 52, and the monitoring result can be transmitted to the data center, and then the data center can compare the data transmitted by the ozone detection sensors 52 at different heights at the same position, and then determine whether the bus 2 at this position has a continuous partial discharge.

[0030] Example 4 like Fig.13 and Fig.14 As shown, on the basis of Example 3, the present invention provides a technical solution: preferably, the collecting component 6 includes a connecting plate three 61, a plurality of springs two 64 and a plurality of storage tubes 66, the connecting plate three 61 is fixedly connected to the main body 1, a plurality of gas pipes two 62 are fixedly connected to the middle part of the connecting plate three 61, the upper end of the connecting plate three 61 is symmetrically fixedly connected to the support plate two 63, the side of the spring two 64 close to the storage tube 66 is fixedly connected to the clamping plate 65, the side of the spring two 64 away from the storage tube 66 is fixedly connected to the adjacent support plate two 63, and the input end of the gas pipe two 62 is fixedly connected to the output end of the adjacent separation tube 53.

[0031] In this embodiment, the air pump 81 is then operated to transport gas to the inner cavity of the gas pipe three 82, and then the gas in the inner cavity of the gas pipe four 85 and the gas in the inner cavity of the gas pipe one 55 can be pushed into the inner cavity of the detection tube 54, and then a force is applied to the piston three 56, so that the piston three 56 can be pushed to slide in the direction of the busbar 2, and the exhaust gas in the inner cavity of the detection tube 54 can be transported to the inner cavity of the separation pipe 53. Since the separation pipe 53 located at the upper part is not connected to the gas pipe two 62, the exhaust gas located at the upper part is directly discharged back into the busbar room, and the separation pipe 53 located at the lower part is connected to the gas pipe two 62, so that these exhaust gases will be transported to the inner cavity of the storage pipe 66 through the gas pipe two 62, so as to prevent these exhaust gases from polluting the surrounding environment. Then the staff can replace the storage pipe 66 and process the collected exhaust gas.

[0032] A method for monitoring partial discharge of a switch cabinet comprises the following steps: S1. The slider 43 is pushed to slide toward the busbar 2 by the elastic force of the spring 1 44, driving the shield 45 to slide toward the busbar 2, thereby forming a semi-enclosed space; The busbar 2 discharges continuously, and the surface temperature of the busbar 2 rises rapidly in a short time, and ozone and nitrogen oxides are generated at the same time. Then, the elastic force of the spring 44 can push the slider 43 to slide in the inner cavity of the support plate 41, and then drive the shield plate 45 to slide toward the direction of the busbar 2, so that the support plate 41 and the shield plate 45 can cooperate to form a semi-enclosed space, and then the high temperature generated by the continuous local discharge of the busbar 2 and the speed of diffusion of ozone and nitrogen oxides outward can be slowed down.

[0033] S2, by rapidly heating the heat expansion medium in the inner cavity of the shell 1 31 to make it evaporate, and then push the piston 2 38 to slide in the inner cavity of the gas distribution pipe 2 37 toward the connecting plate 2 39; By cooperating with the heat conductive sheet 33 and the heat conductive wire 32, the high temperature generated by the continuous partial discharge of the busbar 2 can be transferred to the inner cavity of the shell 1 31, and then the heat expansion medium in the inner cavity of the shell 1 31 is quickly heated to evaporate into gas, and then the anhydrous methanol gas flows toward the inner cavity of the gas distribution pipe 2 37, and then under the action of the anhydrous methanol gas, the piston 2 38 can be pushed to move toward the connecting plate 2 39, and then the piston 2 38 can apply a force to the switch button at the upper end of the connecting plate 2 39 to control the operation of the buzzer alarm 7 to remind the staff that continuous partial discharge occurs on the busbar 2 at this position.

[0034] S3, the air pump 81 is running to extract the gas in the inner cavity of the gas delivery pipe 3 82, and then drives the gas in the inner cavity of the gas delivery pipe 4 85 to flow, and then drives the gas in the inner cavities of the gas delivery pipe 1 55 and the detection tube 54 to flow, drives the piston 3 56 to move toward the side away from the busbar 2, and drives the detection tube 54 to extract the gas in the inner cavity of the semi-enclosed component 4; By running the air pump 81, the gas in the inner cavity of the gas pipe three 82 is extracted by using the air pump 81, and then the gas in the inner cavity of the gas pipe four 85 is driven to flow into the inner cavity of the gas pipe three 82, and at the same time, the gas in the inner cavities of the detection tube 54 and the gas pipe one 55 is driven to flow into the inner cavity of the gas pipe four 85, thereby driving the piston three 56 to slide in the inner cavity of the detection tube 54, and then driving the detection tube 54 to extract the gas in the inner cavity of the semi-enclosed component 4.

[0035] S4, by running the ultraviolet lamp 58, accelerate the conversion of nitric oxide and nitrogen dioxide in the inner cavity of the detection tube 54 into ozone, and then use the ozone detection sensor 52 to detect it. At the same time, the detection data is transmitted to the data center for comparison to determine whether continuous partial discharge occurs at the bus 2 at this position; By running the ultraviolet lamp 58, ultraviolet rays can be generated, and then the ultraviolet rays can accelerate the conversion of nitric oxide and nitrogen dioxide in the inner cavity of the detection tube 54 into ozone, thereby increasing the ozone in the inner cavity of the detection tube 54, and then the ozone detection sensor 52 can detect the ozone in the inner cavity of the detection tube 54, and then the monitoring result is transmitted to the data center, and then the data center compares the data transmitted by the ozone detection sensors 52 at different heights at the same position, and then determines whether continuous local discharge occurs at the bus 2 at this position.

[0036] S5. By running the air pump 81, the air pump 81 is used to deliver gas to the inner cavity of the gas delivery pipe 3 82, so as to push the gas in the inner cavity of the gas delivery pipe 4 85 and the gas in the inner cavity of the gas delivery pipe 1 55 to flow toward the inner cavity of the detection pipe 54, and push the piston 3 56 to slide toward the direction of the busbar 2, so as to push the detected waste gas in the inner cavity of the detection pipe 54 into the inner cavity of the separation pipe 53, and deliver the waste gas to the inner cavity of the storage pipe 66 through the gas delivery pipe 2 62; By running the air pump 81, gas can be transported to the inner cavity of the gas pipe three 82, and then the gas in the inner cavity of the gas pipe four 85 and the gas in the inner cavity of the gas pipe one 55 can be pushed into the inner cavity of the detection tube 54. Then, a force is applied to the piston three 56, so that the piston three 56 can be pushed to slide in the direction of the busbar 2, and the exhaust gas in the inner cavity of the detection tube 54 can be transported to the inner cavity of the separation pipe 53. Since the separation pipe 53 located at the upper part is not connected to the gas pipe two 62, the exhaust gas located at the upper part is directly discharged back into the busbar room. The separation pipe 53 located at the lower part is connected to the gas pipe two 62, so that these exhaust gases will be transported to the inner cavity of the storage pipe 66 through the gas pipe two 62, so as to prevent these exhaust gases from polluting the surrounding environment.

[0037] The working principle of the switch cabinet with partial discharge online monitoring structure and the monitoring method thereof are described in detail below.

[0038] like Figure 1-Figure 16 As shown, the elastic force of the spring 1 44 can push the slider 43 to slide in the inner cavity of the support plate 1 41, and then drive the shield 45 to slide toward the direction of the busbar 2, so that the support plate 1 41 and the shield 45 can cooperate to form a semi-enclosed space, and the busbar 2 is continuously discharged, and the surface temperature of the busbar 2 is accelerated in a short time, and ozone and nitrogen oxides are generated at the same time. By using the busbar 2 to form a semi-enclosed space, the high temperature generated by the continuous partial discharge of the busbar 2 and the speed of the ozone and nitrogen oxides diffusing outward can be slowed down; By making the heat conducting sheet 33 fit closely with the surface of the busbar 2, the heat conducting sheet 33 can be used to transfer heat energy to the heat conducting wire 32, and the heat conducting wire 32 is used to transfer heat to the inner cavity of the shell 1 31, so that the heat expansion medium filled in the inner cavity of the shell 1 31 is quickly heated, so that its temperature can be quickly increased and then expanded. Since the small hole opened on the piston 1 35 is small, the liquid filled in the inner cavity of the gas distribution pipe 1 34 cannot be quickly exchanged through the small hole, and then the resistance of the liquid on the piston 1 35 is greater than the gravity of the piston 2 38. Since the piston 1 35 cannot move quickly toward the side away from the shell 1 31, the heat expansion medium will move toward the direction of the piston 2 38, and then the piston 2 38 can be pushed to move toward the side away from the shell 1 31, so that the piston 2 38 can be pushed to apply a force to the key switch installed on the upper end of the connecting plate 2 39, and the corresponding buzzer alarm 7 can be controlled to operate and emit a buzzer alarm, so as to remind the staff that the busbar 2 at this position has a continuous partial discharge phenomenon; At the same time, let the air pump 81 run, and then use the air pump 81 to extract the gas in the inner cavity of the gas pipe three 82, and then drive the gas in the inner cavity of the gas pipe four 85 to flow into the inner cavity of the gas pipe three 82, and at the same time drive the gas in the inner cavities of the detection tube 54 and the gas pipe one 55 to flow into the inner cavity of the gas pipe four 85, so as to drive the piston three 56 to slide in the inner cavity of the detection tube 54, and then drive the detection tube 54 to extract the gas in the inner cavity of the semi-enclosed component 4, and can extract the ozone and nitrogen oxides in the semi-enclosed space as well as other gases into the inner cavity of the detection tube 54, and the detection tube 54 located at the upper part of the main body 1 will extract the air in the upper part of the busbar chamber into the inner cavity, By fixing a plurality of ultraviolet lamps 58 in the inner cavity of the second housing 51, the ultraviolet rays generated by the ultraviolet lamps 58 can be used to irradiate the gas in the inner cavity of the detection tube 54, and the nitric oxide and nitrogen dioxide will be accelerated to be converted into ozone under the irradiation of ultraviolet rays, and then the concentration of ozone in the inner cavity of the detection tube 54 can be enhanced. Then, the ozone in the inner cavity of the detection tube 54 can be monitored by the ozone detection sensor 52, and the monitoring result can be transmitted to the data center, and then the data center can compare the data transmitted by the ozone detection sensors 52 at different heights at the same position, and then determine whether the bus 2 at the position has a continuous partial discharge; Then, by running the air pump 81, the air pump 81 is allowed to transport gas to the inner cavity of the gas pipe three 82, and then the gas in the inner cavity of the gas pipe four 85 and the gas in the inner cavity of the gas pipe one 55 can be pushed into the inner cavity of the detection tube 54, and then a force is applied to the piston three 56, so that the piston three 56 can be pushed to slide in the direction of the busbar 2, and the exhaust gas in the inner cavity of the detection tube 54 can be transported to the inner cavity of the separation pipe 53. Since the separation pipe 53 located at the upper part is not connected to the gas pipe two 62, the exhaust gas located at the upper part is directly discharged back into the busbar room, and the separation pipe 53 located at the lower part is connected to the gas pipe two 62, so that these exhaust gases will be transported to the inner cavity of the storage pipe 66 through the gas pipe two 62, so as to prevent these exhaust gases from polluting the surrounding environment. Then the staff can replace the storage pipe 66 and process the collected exhaust gas.

[0039] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A switch cabinet with a partial discharge online monitoring structure, comprising a main body (1), a partition (11), a plurality of busbars (2), a plurality of temperature monitoring components (3), a gas monitoring component (5) and a plurality of buzzer alarms (7), wherein the upper portion of the main body (1) is fixedly connected to the partition (11); characterized in that: The temperature monitoring assembly (3) comprises a shell one (31), the lower end of the shell one (31) is fixedly connected to the upper end of the partition (11), the inner cavity of the shell one (31) is filled with a heat expansion medium, a heat conductive wire (32) is fixedly connected to the middle of the shell one (31), a heat conductive sheet (33) is fixedly connected to the side of the heat conductive wire (32) close to the busbar (2), and the heat conductive sheet (33) is tightly fitted to the outer surface of the adjacent busbar (2); A gas distribution pipe 1 (34) is fixedly connected to a side of the shell 1 (31) away from the busbar (2), and the inner cavity of the gas distribution pipe 1 (34) is communicated with the inner cavity of the shell 1 (31); a piston 1 (35) is slidably connected to the inner cavity of the gas distribution pipe 1 (34); a sealing plate (36) is fixedly connected to the middle of the inner cavity of the gas distribution pipe 1 (34); the piston 1 (35) is slidably connected to the sealing plate (36); a side of the inner cavity of the gas distribution pipe 1 (34) away from the shell 1 (31) is filled with liquid; a gas distribution pipe 2 (37) is fixedly connected to a side of the upper part of the shell 1 (31), and the inner cavity of the gas distribution pipe 2 (37) is communicated with the inner cavity of the shell 1 (31); a piston 2 (38) is slidably connected to the middle of the gas distribution pipe 2 (37); and a connecting plate 2 (39) is fixedly connected to a side of the upper end of the shell 1 (31) close to the gas distribution pipe 2 (37); One side of the upper portion of the main body (1) is fixedly connected to a plurality of buzzer alarms (7); one side of the upper portion of the main body (1) is provided with a collecting assembly (6), the collecting assembly (6) being used to store waste gas; one side of the upper portion of the main body (1) is provided with a driving assembly (8), the driving assembly (8) being used to provide power for the gas monitoring assembly (5) to extract gas; the gas monitoring assembly (5) on the side close to the partition (11) is fixedly connected to the partition (11), and the gas monitoring assembly (5) on the side away from the partition (11) is fixedly connected to the upper portion of the main body (1).

2. A switch cabinet with a partial discharge online monitoring structure according to claim 1, characterized in that: The gas monitoring assembly (5) comprises a second housing (51), a detection tube (54) being fixedly connected to the middle of the second housing (51), the detection tube (54) penetrating a side of an adjacent shield plate (45) away from the busbar (2) and extending to a side of the shield plate (45) close to the busbar (2), an ozone detection sensor (52) being fixedly connected to a side of the second housing (51) close to the busbar (2), and a detection end of the ozone detection sensor (52) extending through an end surface of the second housing (51) and an outer surface of the detection tube (54) in sequence. To the inner cavity of the detection tube (54), the side of the detection tube (54) away from the busbar (2) is fixedly connected to the gas supply pipe 1 (55), the side of the gas supply pipe 1 (55) away from the busbar (2) passes through the inner cavity of the shell 2 (51) and extends to the outer surface of the shell 2 (51), the inner cavity of the detection tube (54) is slidably connected to the piston 3 (56), the side of the detection tube (54) close to the busbar (2) is fixedly connected to the mounting block (541), and the middle part of the mounting block (541) is fixedly connected to the one-way valve 1 (542).

3. The switch cabinet with partial discharge online monitoring structure according to claim 2 is characterized in that: A plurality of ultraviolet lamps (58) are fixedly connected to the inner cavity of the second shell (51), and the detection tube (54) is made of a transparent glass material.

4. The switch cabinet with partial discharge online monitoring structure according to claim 3 is characterized in that: A discharge pipe (53) is fixedly connected to one side of the second shell (51), and a side of the discharge pipe (53) close to the detection pipe (54) sequentially penetrates the end surface of the second shell (51) and the outer surface of the detection pipe (54) and extends to the inner cavity of the detection pipe (54), and a second check valve (57) is fixedly connected to the inner cavity of the discharge pipe (53) close to the detection pipe (54).

5. The switch cabinet with partial discharge online monitoring structure according to claim 1 is characterized in that: A plurality of semi-enclosed components (4) are arranged at the upper end of the main body (1), and the semi-enclosed components (4) include two support plates (41) and two shielding plates (45). The lower ends of the two support plates (41) are fixedly connected to the upper end of the partition (11). The two support plates (41) are symmetrically fixedly connected to guide rods (42). The outer surfaces of the guide rods (42) are wound with springs (44). The inner cavities of the two support plates (41) are symmetrically slidably connected to sliders (43). The guide rods (42) on the same side are fixedly connected to the guide rods (42). The slider (43) is slidably connected, the side of the spring (44) on the same side close to the slider (43) is fixedly connected to the slider (43), the side of the spring (44) on the same side away from the slider (43) is fixedly connected to the inner wall of the support plate (41), the upper end of the shield plate (45) is fixedly connected to the lower ends of two adjacent sliders (43), a certain gap exists between the upper parts of the two shield plates (45) and the busbar (2), and the side of the heat conductive wire (32) close to the busbar (2) is slidably connected to the adjacent shield plate (45).

6. The switch cabinet with partial discharge online monitoring structure according to claim 1, characterized in that: The driving assembly (8) comprises an air pump (81) and two pneumatic integrated valves (84), wherein the air pump (81) is fixedly connected to the main body (1), and the pneumatic integrated valve (84) is fixedly connected to the main body (1). The output end of the air pump (81) is fixedly connected to a third air supply pipe (82), the air inlets of the two pneumatic integrated valves (84) are commonly fixedly connected to a shunt pipe (83), the shunt pipe (83) is fixedly connected to the third air supply pipe (82), and the air outlets of the pneumatic integrated valves (84) are both fixedly connected to a fourth air supply pipe (85), and the output end of the fourth air supply pipe (85) is fixedly connected to the input end of the adjacent first air supply pipe (55).

7. The switch cabinet with partial discharge online monitoring structure according to claim 1, characterized in that: The collecting assembly (6) comprises a connecting plate three (61), a plurality of springs two (64) and a plurality of storage tubes (66); the connecting plate three (61) is fixedly connected to the main body (1); a plurality of gas transmission tubes two (62) are fixedly connected to the middle of the connecting plate three (61); a support plate two (63) is symmetrically fixedly connected to the upper end of the connecting plate three (61); a clamping plate (65) is fixedly connected to the side of the spring two (64) close to the storage tube (66); a side of the spring two (64) away from the storage tube (66) is fixedly connected to the adjacent support plate two (63); and an input end of the gas transmission tube two (62) is fixedly connected to an output end of an adjacent separation tube (53).

8. The switch cabinet with partial discharge online monitoring structure according to claim 1, characterized in that: The heat conducting sheet (33) is arranged in a U shape, and the heat conducting wire (32) is arranged in a spiral shape in the inner cavity of the housing 1 (31).

9. A method for monitoring partial discharge in a switch cabinet, applicable to a switch cabinet with a partial discharge online monitoring structure as claimed in any one of claims 7 to 8, characterized in that: The following steps are involved: S1, the slider (43) is pushed to slide in the direction of the busbar (2) by the elastic force of the spring 1 (44), thereby driving the shielding plate (45) to slide in the direction of the busbar (2), thereby forming a semi-enclosed space; S2, by rapidly heating the heat expansion medium in the inner cavity of the shell 1 (31) to evaporate it, and then push the piston 2 (38) to slide in the inner cavity of the gas distribution pipe 2 (37) toward the connecting plate 2 (39); S3, the air pump (81) is operated to extract gas from the inner cavity of the gas delivery pipe three (82), and then drives the gas in the inner cavity of the gas delivery pipe four (85) to flow, and then drives the gas in the inner cavities of the gas delivery pipe one (55) and the detection pipe (54) to flow, drives the piston three (56) to move in a direction away from the busbar (2), and drives the detection pipe (54) to extract gas from the inner cavity of the semi-enclosed component (4); S4, by operating the ultraviolet lamp (58), accelerating the conversion of nitric oxide and nitrogen dioxide in the inner cavity of the detection tube (54) into ozone, and then using the ozone detection sensor (52) to detect it, and at the same time, transmitting the detection data to the data center for comparison to determine whether continuous partial discharge occurs at the busbar (2) at the location; S5. By operating the air pump (81), the air pump (81) is used to deliver gas to the inner cavity of the gas delivery pipe three (82), so as to push the gas in the inner cavity of the gas delivery pipe four (85) and the gas in the inner cavity of the gas delivery pipe one (55) to flow toward the inner cavity of the detection pipe (54), and push the piston three (56) to slide in the direction of the busbar (2), so as to push the waste gas detected in the inner cavity of the detection pipe (54) into the inner cavity of the separation pipe (53), and deliver the waste gas to the inner cavity of the storage pipe (66) through the gas delivery pipe two (62).

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