12KV environment-friendly gas insulation switch cabinet

Abstract

The invention relates to a 12KV environment-friendly gas insulation switch cabinet, and relates to the technical field of insulation switch cabinets, the 12KV environment-friendly gas insulation switch cabinet comprises a mobile cabinet, one side of the mobile cabinet is provided with an opening and closing door, the opening and closing door is provided with a control panel, and the mobile cabinet is internally provided with a first isolation plate vertically and a second isolation plate horizontally; the first isolation plate and the second isolation plate are provided with connector assemblies, a sliding circuit breaking mechanism is arranged in the side, away from the door, of the first isolation plate, the sliding circuit breaking mechanism is provided with a circuit breaking assembly and a switch assembly, and the second isolation plate is arranged between the circuit breaking assembly and the switch assembly. The circuit breaking assembly is electrically connected with the switch assembly through the connector assembly, a cooling mechanism is further arranged on one side of the mobile cabinet, maintenance of electrical equipment in the mobile cabinet is facilitated, the control panel is electrically connected with the electrical equipment in the mobile cabinet to control operation of the electrical equipment, and the cooling mechanism cools the temperature generated in the mobile cabinet during working. And faults such as short circuit caused by temperature rise of the mobile cabinet can be prevented.

Description

Technical Field

[0001] This application relates to the technical field of insulated switch cabinets, and in particular to a 12KV environmentally friendly gas insulated switch cabinet. Background Art

[0002] As the environmental requirements of the power system for equipment are getting higher and higher, traditional oil-immersed and air-insulated switchgear can gradually no longer meet the requirements of modern power systems for safety, environmental protection, and space saving. Traditional switch cabinets use oil or air as the insulating medium, are easily affected by the external environment, and have disadvantages such as fire hazards, oil leakage, and large space occupancy. Especially in harsh or humid environments, the service life is shortened and safety hazards increase. Therefore, gas insulated switch cabinets using environmentally friendly gases as the insulating medium have a large market demand.

[0003] At present, there are a certain number of gas insulated switch cabinets on the market, but there are still some problems in use, such as gas leakage, poor system sealing, short service life of environmentally friendly gases, inconvenient equipment operation, etc.

[0004] Therefore, in view of the above current situation, there is an urgent need to develop a 12KV environmentally friendly gas insulated switch cabinet to overcome the current practical deficiencies. Summary of the Invention

[0005] In order to solve the defects in the above technology, this application provides a 12KV environmentally friendly gas insulated switch cabinet.

[0006] A 12KV environmentally friendly gas insulated switch cabinet provided by this application adopts the following technical solutions: A 12KV environmentally friendly gas insulated switch cabinet includes a mobile cabinet. One side of the mobile cabinet is provided with a switch door, and a control panel is arranged on the switch door. A first partition board is vertically arranged and a second partition board is horizontally arranged inside the mobile cabinet. Joint assemblies are arranged on the first partition board and the second partition board. A sliding breaking mechanism is arranged inside the first partition board on the side away from the switch door. A breaking component and a switch component are respectively arranged on the sliding breaking mechanism. The second partition board is arranged between the breaking component and the switch component. The breaking component is electrically connected to the switch component through the joint assembly. A cooling mechanism is also arranged on one side of the mobile cabinet.

[0007] Optionally, the first partition board and the second partition board divide the space inside the mobile cabinet into a first isolation chamber, a second isolation chamber, a third isolation chamber, and a fourth isolation chamber. The sliding circuit-breaking mechanism includes guide rails. Two guide rails are vertically arranged in the first isolation chamber and the second isolation chamber. A circuit-breaking component is slidably arranged on the two guide rails in the first isolation chamber, and a switch component is sleeved on the two guide rails in the second isolation chamber. Connecting columns are vertically arranged on a part of the second partition plate in the first isolation chamber and the second isolation chamber. Two ends of the connecting columns are fixedly connected to the switch component and the circuit-breaking component respectively. An air rod is arranged at the bottom of the mobile cabinet, and the telescopic end of the air rod is fixedly connected to the bottom of the switch component.

[0008] Optionally, the circuit-breaking component includes a first moving box. Two ends of the first moving box are sleeved on the two guide rails. A plurality of groups of first terminal connectors are arranged on a side wall of the first moving box facing the second partition plate. The first moving box is filled with insulating gas. A circuit breaker is horizontally slidably arranged in the first moving box. A plurality of groups of second terminal connectors capable of being electrically connected to the plurality of groups of first terminal connectors are arranged on a side of the circuit breaker facing the first terminal connectors. A rack is arranged at the bottom of the circuit breaker. A driving component is arranged on the outer surface of the first moving box, and a driving end of the driving component extends into the first moving box and is provided with a spur gear, and the spur gear meshes with the rack.

[0009] Optionally, the switch component includes a second moving box. Two ends of the second moving box are sleeved on the two guide rails. A plurality of groups of third terminal connectors are arranged on a side wall of the second moving box facing the second partition plate. The second moving box is filled with insulating gas. An isolating switch is horizontally slidably arranged in the second moving box. A plurality of groups of fourth terminal connectors capable of being electrically connected to the plurality of groups of third terminal connectors are arranged on a side of the isolating switch facing the third terminal connectors. A rack is arranged at the bottom of the isolating switch. A driving component is arranged on the outer surface of the second moving box, and a driving end of the driving component extends into the second moving box and is provided with a spur gear, and the spur gear meshes with the rack.

[0010] Optionally, a first one-way air valve and a second one-way air valve are respectively arranged in an air port opened at the top of the first moving box and an air port opened at the bottom of the second moving box. A third one-way air valve and a fourth one-way air valve are respectively arranged in an air port opened at the top of the mobile cabinet and an air port opened at the bottom of the mobile cabinet. A fifth one-way valve is arranged in an air port opened on the second partition plate.

[0011] Optionally, the joint assembly includes multiple groups of fifth joint terminals that can be electrically connected to the other ends of multiple groups of the first joint terminals correspondingly, and multiple groups of sixth joint terminals that can be electrically connected to the other ends of multiple groups of the third joint terminals correspondingly. Multiple groups of seventh joint terminals are vertically arranged on some of the second partition plates in the third isolation chamber and the fourth isolation chamber. Both ends of the seventh joint terminals electrically connect the first joint terminals and the third joint terminals through temperature control switches respectively.

[0012] Optionally, the cooling mechanism includes a cooling cover. Both ends of the cooling cover communicate with a third one-way air valve and a fourth one-way air valve respectively. A heat exchange tube is arranged inside the cooling cover. A steam storage tank and a steam liquid tank are arranged on the outer surface of the cooling cover. The steam storage tank and the steam liquid tank are communicated through a vertically arranged steam passing tube. The steam outlet of the steam storage tank and the liquid inlet of the steam liquid tank are communicated with both ends of the heat exchange tube respectively.

[0013] Optionally, it further includes: A speed detection module one for measuring the flow rate of the heat exchange liquid in the heat exchange tube; A speed detection module two for measuring the flow rate of the heat exchange gas in the heat exchange tube; A calculation module one for calculating the actual safe operation coefficient of the switch cabinet based on the flow rate of the heat exchange liquid in the heat exchange tube; an alarm module for giving an alarm; A processing module for comparing and processing the actual safe operation coefficient of the switch cabinet obtained by the calculation module one with the rated safe operation coefficient of the switch cabinet; A control module. When the actual safe operation coefficient of the switch cabinet is equal to or less than the rated safe operation coefficient of the switch cabinet, it controls the alarm module to give an alarm, and at the same time controls the electrical equipment in the switch cabinet to stop working for maintenance. When the actual safe operation coefficient of the switch cabinet is greater than the rated safe operation coefficient of the switch cabinet, the electrical equipment in the switch cabinet works normally.

[0014] Optionally, the calculation module one calculates based on the following formula one: K is the safe operation coefficient of the switch cabinet, d1 is the outer diameter of the heat exchange tube, d2 is the inner diameter of the heat exchange tube, L is the length of the heat exchange tube, V1 is the flow rate of the heat exchange liquid in the heat exchange tube, V2 is the flow rate of the heat exchange gas in the heat exchange tube, ε is the heat transfer factor of the heat exchange tube, β is the heat conduction coefficient of the heat exchange tube, C1 is the specific heat capacity of the heat exchange liquid in the heat exchange tube, C2 is the specific heat capacity of the heat exchange gas in the heat exchange tube, σ1 is the viscosity of the heat exchange liquid in the heat exchange tube, σ2 is the viscosity of the heat exchange gas in the heat exchange tube, δ is the wall thickness of the heat exchange tube, μ1 is the heat exchange efficiency of the heat exchange liquid in the heat exchange tube, and μ2 is the heat exchange efficiency of the heat exchange gas in the heat exchange tube.

[0015] In summary, the present application includes at least one of the following beneficial technical effects: 1. The present application adopts a sliding open - circuit mechanism, temperature control, and gas - insulated structural setting method to provide multiple protections for the switchgear, disconnecting the circuit when a danger occurs in the circuit to prevent the occurrence of danger; 2. The present application adopts a modular design to support the rapid replacement of faulty components, facilitating the maintenance of electrical equipment in the switchgear. Description of the Drawings

[0016] Figure 1 is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 is a cross - sectional view of the overall structure of an embodiment of the present application.

[0017] Description of the Reference Numerals: 1, mobile cabinet; 11, third one - way air valve; 12, fourth one - way air valve; 2, switch door; 3, first partition board; 4, second partition board; 41, first isolation cavity; 42, second isolation cavity; 421, fifth one - way valve; 43, third isolation cavity; 44, fourth isolation cavity; 5, joint assembly; 51, fifth joint terminal; 52, sixth joint terminal; 53, seventh joint terminal; 54, temperature control switch; 6, sliding open - circuit mechanism; 61, guide rail; 62, open - circuit assembly; 621, first moving box; 6211, first one - way air valve; 622, first joint terminal; 623, circuit breaker; 624, second joint terminal; 625, rack; 626, drive assembly; 627, spur gear; 63, switch assembly; 631, second moving box; 6311, second one - way air valve; 632, third joint terminal; 633, disconnecting switch; 634, fourth joint terminal; 64, connecting column; 65, air rod; 7, cooling mechanism; 71, cooling cover; 72, heat exchange tube; 73, steam storage tank; 74, steam - liquid tank; 75, steam - passing tube. Detailed Embodiments

[0018] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below with reference to the accompanying drawings in the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments of the present invention fall within the protection scope of the present invention.

[0019] In addition, in the present invention, descriptions such as "first" and "second" are only for descriptive purposes, and do not particularly refer to the meaning of order or sequence, nor are they used to limit the present invention. They are merely used to distinguish components or operations described with the same technical terms, and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0020] The present invention provides the following embodiments Embodiment 1 This application embodiment discloses a 12KV environmentally friendly gas-insulated switchgear cabinet. Refer to Figure 1 - Figure 2 , which includes a mobile cabinet 1. A switch door 2 is provided on one side of the mobile cabinet 1. A control panel is provided on the switch door 2. A first partition 3 is vertically arranged and a second partition 4 is horizontally arranged in the mobile cabinet 1. A joint assembly 5 is provided on the first partition 3 and the second partition 4. A sliding breaking mechanism 6 is arranged inside the first partition 3 on the side away from the switch door 2. A breaking component 62 and a switch component 63 are respectively arranged on the sliding breaking mechanism 6. The second partition 4 is arranged between the breaking component 62 and the switch component 63. The breaking component 62 is electrically connected to the switch component 63 through the joint assembly 5. A cooling mechanism 7 is also provided on one side of the mobile cabinet 1.

[0021] The working principle and beneficial effects of the above technical solution are as follows: The mobile cabinet 1 isolates and protects the electrical equipment installed inside from the outside world. The setting of the opening and closing door 2 enables the opening and closing of the mobile cabinet 1, facilitating the maintenance of the electrical equipment therein. The control panel is electrically connected to the electrical equipment therein to control the operation of the electrical equipment, facilitating centralized and intelligent operation. The mobile cabinet 1 forms a multi-layer isolation space through the first partition board 3 (vertical) and the second partition board 4 (horizontal) and seals the space where the electrical equipment is placed, preventing the adverse factors in the external environment from corroding the electrical equipment, resulting in electrical damage and leakage of insulating gas to pollute the environment. The disconnection component 62 and the switch component 63 are electrically connected in a complete manner through the joint component 5 on the partition board. The sliding disconnection mechanism 6 is driven by the air rod 65 to realize the overall lifting of the disconnection component 62 and the switch component 63, thereby controlling the on-off of the circuit breaker 623 and the disconnector 633, and disconnecting the circuit in case of danger in the circuit to prevent the occurrence of danger. The cooling mechanism 7 cools the temperature generated during the operation of the mobile cabinet 1, preventing faults such as short circuits caused by the rise in temperature of the mobile cabinet 1.

[0022] Embodiment 2 Based on Embodiment 1, as Figure 1 - Figure 2 shown, the first partition board 3 and the second partition board 4 divide the space inside the mobile cabinet 1 into a first isolation chamber 41, a second isolation chamber 42, a third isolation chamber 43, and a fourth isolation chamber 44. The sliding disconnection mechanism 6 includes guide rails 61. Two of the guide rails 61 are vertically arranged in the first isolation chamber 41 and the second isolation chamber 42. The disconnection component 62 is slidably arranged on the two guide rails 61 in the first isolation chamber 41. The switch component 63 is sleeved on the two guide rails 61 in the second isolation chamber 42. Connecting columns 64 are vertically arranged on a part of the second partition board 4 in the first isolation chamber 41 and the second isolation chamber 42. The two ends of the connecting column 64 are respectively fixedly connected to the switch component 63 and the disconnection component 62. An air rod 65 is arranged at the bottom of the mobile cabinet 1, and the telescopic end of the air rod 65 is fixedly connected to the bottom of the switch component 63.

[0023] The working principle and beneficial effects of the above technical solution are as follows: The first isolation chamber 41, the second isolation chamber 42, the third isolation chamber 43, and the fourth isolation chamber 44 divide different functional areas (such as open circuit, switch, cooling), prevent the spread of electric arcs, improve insulation, and are convenient for maintenance and reduce mutual interference. The guide rail 61 guides the synchronous lifting and lowering of the open circuit component 62 and the switch component 63. The air rod 65 provides power, and the connecting column 64 ensures the linkage of the two, facilitating the connection and disconnection of the open circuit component 62 and the switch component 63 with the joint component 5, controlling and protecting the electrical appliances in the mobile cabinet 1. While protecting the circuit breaker 623, the open circuit component 62 facilitates the control of the power-off and power-on of the circuit breaker 623. While protecting the switch component 63, the switch component 63 facilitates the control of the power-off and power-on of the circuit breaker 623.

[0024] Embodiment 3 Based on Embodiment 2, as Figure 1 - Figure 2 shown, the open circuit component 62 includes a first moving box 621. Both ends of the first moving box 621 are sleeved on the two guide rails 61. A plurality of groups of first joint terminals 622 are arranged on a side wall of the first moving box 621 facing the second partition plate 4. The first moving box 621 is filled with insulating gas. A circuit breaker 623 is horizontally slidably arranged in the first moving box 621. A plurality of groups of second joint terminals 624 that can be electrically connected to the plurality of groups of first joint terminals 622 are arranged on a side of the circuit breaker 623 facing the first joint terminals 622. A rack 625 is arranged at the bottom of the circuit breaker 623. A driving component 626 is arranged on the outer surface of the first moving box 621. A driving end of the driving component 626 extends into the first moving box 621 and is provided with a spur gear 627. The spur gear 627 meshes with the rack 625.

[0025] The working principle and beneficial effects of the above technical solution are as follows: The two guide rails 61 limit and guide the first moving box 621. The insulating gas in the first moving box 621 plays a role in isolating the electric field in the first moving box 621, preventing current from directly forming an electric arc through the air, thereby protecting the equipment in the first moving box 621 from being damaged by the electric arc. Using insulating gas instead of oil insulation is pollution-free and ensures the safe and reliable operation of the power grid. The driving component 626 in this application is a motor. The outer wall of the mobile cabinet 1 supports and fixes the motor. The spur gear 627 arranged at the driving end of the motor meshes with the rack 625 at the bottom of the circuit breaker 623 to control the position of the circuit breaker 623 in the first moving box 621, so that the second joint terminals 624 are connected or disconnected from the first joint terminals 622 through the horizontal movement of the circuit breaker 623, realizing the on-off control of the circuit.

[0026] Embodiment 4 Based on Embodiment 3, as Figure 1 - Figure 2As shown, the switch assembly 63 includes a second moving box 631. Both ends of the second moving box 631 are sleeved on the two guide rails 61. A plurality of groups of third terminal connectors 632 are arranged on one side wall of the second moving box 631 facing the second partition board 4. The second moving box 631 is filled with insulating gas. A disconnector 633 is horizontally slidably arranged in the second moving box 631. A plurality of groups of fourth terminal connectors 634 that can be electrically connected to the plurality of groups of third terminal connectors 632 are arranged on one side of the disconnector 633 facing the third terminal connectors 632. A rack 625 is arranged at the bottom of the disconnector 633. A driving assembly 626 is arranged on the outer surface of the second moving box 631. The driving end of the driving assembly 626 extends into the second moving box 631 and is provided with a spur gear 627. The spur gear 627 meshes with the rack 625.

[0027] The working principle and beneficial effects of the above technical solution are as follows: The two guide rails 61 limit and guide the second moving box 631. The insulating gas in the second moving box 631 plays a role in isolating the electric field in the second moving box 631, preventing current from directly forming an arc through the air, thereby protecting the equipment in the second moving box 631 from arc damage. Using insulating gas instead of oil insulation is pollution-free and ensures the safe and reliable operation of the power grid. The driving assembly 626 in this application is a motor. The outer wall of the mobile cabinet 1 supports and fixes the motor. The spur gear 627 arranged at the driving end of the motor meshes with the rack 625 at the bottom of the disconnector 633 to control the position of the disconnector 633 in the second moving box 631. Thus, by horizontally moving the disconnector 633, the third terminal connectors 632 are connected or disconnected from the fourth terminal connectors 634, realizing the on-off control of the circuit.

[0028] Embodiment 5 On the basis of Embodiment 4, as Figure 1 - Figure 2 shown, a first one-way air valve 6211 and a second one-way air valve 6311 are respectively arranged in the air ports opened at the top of the first moving box 621 and the air ports opened at the bottom of the second moving box 631. A third one-way air valve 11 and a fourth one-way air valve 12 are respectively arranged in the air ports opened at the top and bottom of the mobile cabinet 1. A fifth one-way valve 421 is arranged in the air port opened on the second partition board 4.

[0029] The working principle and beneficial effects of the above technical solution are as follows: The first one-way air valve 6211 and the second one-way air valve 6311 can control the one-way flow of the insulating gas in the first moving box 621 and the second moving box 631. The third one-way air valve 11 and the fourth one-way air valve 12 can control the one-way flow of the gas in the mobile cabinet 1, so as to direct the flow of the gas in the mobile cabinet 1 or the first moving box 621 and the second moving box 631, form a cycle, and then use the cooling mechanism 7 to cool down, maintain the air pressure and temperature stability in the cabinet, avoid the entry of external pollutants, and ensure the safety of the electrical equipment in the mobile cabinet 1.

[0030] Embodiment 6 On the basis of Embodiment 5, as Figure 1 - Figure 2 shown, the joint assembly 5 includes multiple groups of fifth joint terminals 51 that can be correspondingly electrically connected to the other ends of multiple groups of the first joint terminals 622, and multiple groups of sixth joint terminals 52 that can be correspondingly electrically connected to the other ends of multiple groups of the third joint terminals 632. Multiple groups of seventh joint terminals 53 are vertically arranged on a part of the second partition plate 4 in the third isolation chamber 43 and the fourth isolation chamber 44. The two ends of the seventh joint terminal 53 electrically connect the first joint terminal 622 and the third joint terminal 632 through a temperature control switch 54 respectively.

[0031] The working principle and beneficial effects of the above technical solution are as follows: The temperature control switch 54 monitors the joint temperature and automatically cuts off the circuit current when the temperature in the mobile cabinet 1 is abnormal. The temperature control switch 54 prevents overheating damage. The corresponding electrical connection setting method of multiple groups of fifth joint terminals 51, multiple groups of sixth joint terminals 52, and multiple groups of seventh joint terminals 53 realizes the electrical transmission across the first partition plate 3 and the second partition plate 4, and multiple groups of terminals meet the requirements of complex circuits.

[0032] Embodiment 7 On the basis of Embodiment 6, as Figure 1 - Figure 2 shown, the cooling mechanism 7 includes a cooling cover 71. The two ends of the cooling cover 71 are respectively communicated with the third one-way air valve 11 and the fourth one-way air valve 12. A heat exchange tube 72 is arranged in the cooling cover 71. A steam storage tank 73 and a steam liquid tank 74 are arranged on the outer surface of the cooling cover 71. The steam storage tank 73 and the steam liquid tank 74 are communicated through a vertically arranged steam pipe 75. The steam outlet of the steam storage tank 73 and the liquid inlet of the steam liquid tank 74 are respectively communicated with the two ends of the heat exchange tube 72.

[0033] The working principle and beneficial effects of the above technical solution are as follows: The cooling cover 71 is sleeved outside the third one-way air valve 11 and the fourth one-way air valve 12, and there is no leakage risk in the closed circulation system. The heat exchange tube 72 uses the refrigerant in the steam storage tank 73 to absorb the heat in the mobile cabinet 1. The refrigerant that is vaporized after being liquefied by absorbing heat in the steam-liquid tank 74 flows back through the steam pipe 75 to complete the heat exchange and control the temperature in the mobile cabinet 1. The phase change cooling efficiency is higher than that of traditional air cooling.

[0034] Example 8 On the basis of Example 7, it further includes: A speed detection module one for measuring the flow rate of the heat exchange liquid in the heat exchange tube 72; A speed detection module two for measuring the flow rate of the heat exchange gas in the heat exchange tube 72; A calculation module one for calculating the actual safe operation coefficient of the switch cabinet based on the flow rate of the heat exchange liquid in the heat exchange tube 72; an alarm module for sending out an alarm; A processing module for comparing and processing the actual safe operation coefficient of the switch cabinet obtained by the calculation module one with the rated safe operation coefficient of the switch cabinet; A control module, when the actual safe operation coefficient of the switch cabinet is equal to or less than the rated safe operation coefficient of the switch cabinet, controls the alarm module to send out an alarm, and at the same time controls the electrical equipment in the switch cabinet to stop working for maintenance. When the actual safe operation coefficient of the switch cabinet is greater than the rated safe operation coefficient of the switch cabinet, the electrical equipment in the switch cabinet works normally.

[0035] The working principle and beneficial effects of the above technical solution are as follows: In this application, the speed detection module one measures the flow rate of the heat exchange liquid in the heat exchange tube 72, the speed detection module two measures the flow rate of the heat exchange gas in the heat exchange tube 72, the calculation module one calculates the actual safe operation coefficient of the switch cabinet based on the flow rate of the heat exchange liquid in the heat exchange tube 72, the alarm module is used to send out an alarm, the processing module compares and processes the actual safe operation coefficient of the switch cabinet obtained by the calculation module one with the rated safe operation coefficient of the switch cabinet. When the actual safe operation coefficient of the switch cabinet is equal to or less than the rated safe operation coefficient of the switch cabinet, the control module controls the alarm module to send out an alarm, and at the same time controls the electrical equipment in the switch cabinet to stop working for maintenance. When the actual safe operation coefficient of the switch cabinet is greater than the rated safe operation coefficient of the switch cabinet, the electrical equipment in the switch cabinet works normally.

[0036] Example 9 On the basis of Example 8, the calculation module one calculates based on the following formula one: K is the safety operation coefficient of the switch cabinet, d1 is the outer diameter of the heat exchange tube 72, d2 is the inner diameter of the heat exchange tube 72, L is the length of the heat exchange tube 72, V1 is the flow velocity of the heat exchange liquid in the heat exchange tube 72, V2 is the flow velocity of the heat exchange gas in the heat exchange tube 72, ε is the heat transfer factor of the heat exchange tube 72, β is the thermal conductivity of the heat exchange tube 72, C1 is the specific heat capacity of the heat exchange liquid in the heat exchange tube 72, C2 is the specific heat capacity of the heat exchange gas in the heat exchange tube 72, σ1 is the viscosity of the heat exchange liquid in the heat exchange tube 72, σ2 is the viscosity of the heat exchange gas in the heat exchange tube 72, δ is the wall thickness of the heat exchange tube 72, μ1 is the heat exchange efficiency of the heat exchange liquid in the heat exchange tube 72, and μ2 is the heat exchange efficiency of the heat exchange gas in the heat exchange tube 72.

[0037] The working principle and beneficial effects of the above technical solution are as follows: By calculating the temperature adjustment safety operation value of the cooling mechanism 7, and by calculating the influence coefficient of the specific heat capacity of the heat exchange liquid and the specific heat capacity of the heat exchange gas in the heat exchange tube 72, and by calculating the safety operation coefficient of the switch cabinet. When the actual safety operation coefficient of the switch cabinet is equal to or less than the rated safety operation coefficient of the switch cabinet, the control module controls the alarm module to issue an alarm, and at the same time controls the electrical equipment in the switch cabinet to stop working for maintenance. When the actual safety operation coefficient of the switch cabinet is greater than the rated safety operation coefficient of the switch cabinet, the electrical equipment in the switch cabinet works normally.

[0038] The above are all the preferred embodiments of this application. The protection scope of this application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A 12KV environmentally friendly gas insulated switchgear, characterized in that: The invention comprises a mobile cabinet (1), a switch door (2) is arranged on one side of the mobile cabinet (1), a control panel is arranged on the switch door (2), a first isolation plate (3) is arranged vertically and a second isolation plate (4) is arranged horizontally in the mobile cabinet (1), joint assemblies (5) are arranged on the first isolation plate (3) and the second isolation plate (4), a sliding circuit breaker mechanism (6) is arranged on the side of the first isolation plate (3) away from the switch door (2), a circuit breaker assembly (62) and a switch assembly (63) are arranged on the sliding circuit breaker mechanism (6), the second isolation plate (4) is arranged between the circuit breaker assembly (62) and the switch assembly (63), the circuit breaker assembly (62) is electrically connected to the switch assembly (63) through the joint assembly (5), and a cooling mechanism (7) is also arranged on one side of the mobile cabinet (1).

2. A 12KV environmentally friendly gas insulated switchgear according to claim 1, characterized in that: The first isolation plate (3) and the second isolation plate (4) divide the space inside the mobile cabinet (1) into a first isolation chamber (41), a second isolation chamber (42), a third isolation chamber (43), and a fourth isolation chamber (44). The sliding circuit breaker mechanism (6) comprises a guide rail (61), two guide rails (61) are vertically arranged in the first isolation chamber (41) and the second isolation chamber (42), a circuit breaker assembly (62) is slidably arranged on the two guide rails (61) in the first isolation chamber (41), a switch assembly (63) is sleeved on the two guide rails (61) in the second isolation chamber (42), a connecting column (64) is vertically arranged on part of the second isolation plate (4) in the first isolation chamber (41) and the second isolation chamber (42), two ends of the connecting column (64) are respectively fixedly connected to the switch assembly (63) and the circuit breaker assembly (62), and a gas rod (65) is arranged at the bottom of the mobile cabinet (1), and the telescopic end of the gas rod (65) is fixedly connected to the bottom of the switch assembly (63).

3. A 12KV environmentally friendly gas insulated switchgear according to claim 2, characterized in that: The circuit breaker assembly (62) comprises a first movable box (621), two ends of the first movable box (621) are sleeved on the two guide rails (61), a side wall of the first movable box (621) facing the second isolation plate (4) is provided with a plurality of groups of first connector terminals (622), the first movable box (621) is filled with insulating gas, a circuit breaker (623) is horizontally slidably provided in the first movable box (621), and the circuit breaker (623) faces the first connector. A plurality of groups of second connector terminals (624) which can be electrically connected to the plurality of groups of the first connector terminals (622) are arranged on one side of the terminal (622); a rack (625) is arranged at the bottom of the circuit breaker (623); a driving assembly (626) is arranged on the outer surface of the first movable box (621); a driving end of the driving assembly (626) extends into the first movable box (621) and is provided with a spur gear (627); the spur gear (627) is meshed with the rack (625).

4. A 12KV environmentally friendly gas insulated switchgear according to claim 3, characterized in that: The switch assembly (63) comprises a second movable box (631), the two ends of which are sleeved on the two guide rails (61), a plurality of groups of third connector terminals (632) are arranged on a side wall of the second movable box (631) facing the second isolation plate (4), the second movable box (631) is filled with insulating gas, an isolating switch (633) is arranged in the second movable box (631) for horizontal sliding, a plurality of groups of fourth connector terminals (634) which can be electrically connected to the plurality of groups of third connector terminals (632) are arranged on a side of the isolating switch (633) facing the third connector terminals (632), a rack (625) is arranged at the bottom of the isolating switch (633), a driving assembly (626) is arranged on the outer surface of the second movable box (631), a driving end of the driving assembly (626) extends into the second movable box (631) and is provided with a spur gear (627), and the spur gear (627) is meshed with the rack (625).

5. A 12KV environmentally friendly gas insulated switchgear according to claim 4, characterized in that: A first one-way air valve (6211) and a second one-way air valve (6311) are respectively arranged in the air port opened at the top of the first moving box (621) and the air port opened at the bottom of the second moving box (631); a third one-way air valve (11) and a fourth one-way air valve (12) are respectively arranged in the air port opened at the top and the air port opened at the bottom of the moving cabinet (1); and a fifth one-way valve (421) is arranged in the air port opened on the second isolation plate (4).

6. A 12KV environmentally friendly gas insulated switchgear according to claim 4, characterized in that: The connector assembly (5) comprises a plurality of groups of fifth connector terminals (51) which can be electrically connected to the other ends of the plurality of groups of the first connector terminals (622) and a plurality of groups of sixth connector terminals (52) which can be electrically connected to the other ends of the plurality of groups of the third connector terminals (632). A plurality of groups of seventh connector terminals (53) are vertically arranged on part of the second isolation plate (4) in the third isolation cavity (43) and the fourth isolation cavity (44). The two ends of the seventh connector terminal (53) are electrically connected to the first connector terminal (622) and the third connector terminal (632) through a temperature control switch (54).

7. The 12KV environmentally friendly gas insulated switchgear according to claim 5, characterized in that: The cooling mechanism (7) comprises a cooling cover (71), the two ends of which are respectively connected to the third one-way air valve (11) and the fourth one-way air valve (12); a heat exchange pipe (72) is arranged inside the cooling cover (71); a steam storage box (73) and a evaporation liquid box (74) are arranged on the outer surface of the cooling cover (71); the steam storage box (73) and the evaporation liquid box (74) are connected via a vertically arranged steam passing pipe (75); the steam outlet of the steam storage box (73) and the liquid inlet of the evaporation liquid box (74) are respectively connected to the two ends of the heat exchange pipe (72).

8. The 12KV environmentally friendly gas insulated switchgear according to claim 7, characterized in that: Also includes: A speed detection module 1, used for measuring the flow speed of the heat exchange liquid in the heat exchange tube (72); A speed detection module 2, used for measuring the flow speed of the heat exchange gas in the heat exchange tube (72); A calculation module 1, used for calculating an actual safety operation coefficient of the switch cabinet based on the flow velocity of the heat exchange liquid in the heat exchange tube (72); An alarm module, used for issuing an alarm; A processing module, used for comparing the actual safe operation coefficient of the switch cabinet obtained by the calculation module 1 with the rated safe operation coefficient of the switch cabinet; Control module, when the actual safe operation coefficient of the switch cabinet is equal to or less than the rated safe operation coefficient of the switch cabinet, the control alarm module will sound an alarm and control the electrical equipment in the switch cabinet to stop working for maintenance. When the actual safe operation coefficient of the switch cabinet is greater than the rated safe operation coefficient of the switch cabinet, the electrical equipment in the switch cabinet will work normally.

9. A 12KV environmentally friendly gas insulated switchgear according to claim 8, characterized in that: The calculation module 1 calculates based on the following formula 1: K is the actual safe operation coefficient of the switch cabinet, d1 is the outer diameter of the heat exchange tube (72), d2 is the inner diameter of the heat exchange tube (72), L is the length of the heat exchange tube (72), V1 is the flow velocity of the heat exchange liquid in the heat exchange tube (72), V2 is the flow velocity of the heat exchange gas in the heat exchange tube (72), ε is the heat transfer factor of the heat exchange tube (72), β is the thermal conductivity of the heat exchange tube (72), C1 is the specific heat capacity of the heat exchange liquid in the heat exchange tube (72), C2 is the specific heat capacity of the heat exchange gas in the heat exchange tube (72), σ1 is the viscosity of the heat exchange liquid in the heat exchange tube (72), σ2 is the viscosity of the heat exchange gas in the heat exchange tube (72), δ is the wall thickness of the heat exchange tube (72), μ1 is the heat exchange efficiency of the heat exchange liquid in the heat exchange tube (72), and μ2 is the heat exchange efficiency of the heat exchange gas in the heat exchange tube (72).

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