New energy electrical cabinet with gas insulation structure

Abstract

The invention belongs to the technical field of power distribution network switches, and discloses a new energy electrical cabinet with a gas insulation structure, which comprises a cabinet body and a sealing box body arranged on the cabinet body, and further comprises a pipeline assembly fixedly communicated with the bottom of the cabinet body, and the gas storage tank assembly is arranged at the bottom of the cabinet body and can input insulating gas into the sealed box body through the pipeline assembly. According to the scheme, when the barometer monitors that the gas pressure in the sealed box body is reduced, firstly, the early warning mechanism in the cabinet body transmits data to a control center, meanwhile, the crushing mechanism starts to operate and breaks down a ceramic baffle, and at the moment, gas in the gas storage tank assembly is input into the sealed box body through the shell and the pipeline assembly; therefore, the problem that normal operation of equipment is affected due to the fact that operation cannot timely arrive at field maintenance when gas in a gas insulation cabinet in a remote area leaks is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of power distribution network switches, and specifically relates to a new energy electrical cabinet with a gas insulation structure. Background Art

[0002] The gas-insulated environmental protection cabinet is a medium-voltage power distribution equipment used for ring network power supply, distribution automation and terminal protection in the power system.

[0003] During the installation process of the gas-insulated environmental protection cabinet, if the operation is not standardized (such as the bolts are not tightened according to the torque or the impurities on the sealing surface are not cleaned), it will lead to sealing failure. Or if the air pressure is not regularly detected or the aging components are not replaced, it will also lead to the accumulation of leakage hidden dangers. At the same time, an unreasonable sealing structure or improper material selection is likely to cause leakage. In order to avoid gas leakage in the gas-insulated cabinet, the operator usually sets a barometer in the cabinet to monitor the pressure inside the cabinet (under normal circumstances, the gas pressure inside the cabinet is slightly positive pressure). When the pressure inside the cabinet drops to the warning position, the warning mechanism inside the cabinet will transmit the data to the control center, and the control center will dispatch personnel to quickly maintain it.

[0004] However, for some remote places, the maintenance personnel are far away from the gas-insulated cabinet, and it is difficult for the maintenance personnel to arrive at the scene in time for maintenance. This may cause the gas leakage problem not to be dealt with in time, which may lead to the intrusion of external gas into the sealed cabinet body, thus affecting the normal operation of the equipment and even threatening the safety and stability of the entire power system. Therefore, to solve the above problems, a new energy electrical cabinet with a gas insulation structure is proposed. Summary of the Invention

[0005] To solve the problems raised in the above background art, the present invention provides a new energy electrical cabinet with a gas insulation structure, which solves the problem that when the gas in the gas-insulated cabinet in a remote area leaks, the operator cannot arrive at the scene for maintenance in time, affecting the normal operation of the equipment.

[0006] To achieve the above object, the present invention provides the following technical solution: A new energy electrical cabinet with a gas insulation structure, including a cabinet body and a sealed box body installed thereon. A barometer is also provided inside the sealed box body. It further includes: a pipeline assembly, which is fixedly connected and communicated to the bottom of the cabinet body; a gas storage tank assembly, which is arranged at the bottom of the cabinet body and can input insulating gas into the sealed box body through the pipeline assembly; a sealing valve mechanism, which is installed at the output end of the gas storage tank assembly and is used to connect the gas storage tank assembly and the pipeline assembly when the sealed box body leaks; The sealing valve mechanism includes a shell fixedly connected and communicated to the output end of the gas storage tank assembly. The other end of the shell is connected and communicated with the pipeline assembly. A ceramic baffle for blocking the connection between the shell and the pipeline assembly is fixedly connected inside the output end of the shell. A crushing mechanism for breaking through the ceramic baffle is fixedly connected inside the shell; A secondary air supplement mechanism is also connected to the housing for continuously supplementing dry gas into the pipeline assembly after the gas in the tank assembly is exhausted.

[0007] Preferably, the pipeline assembly includes a mixing chamber fixedly installed in the sealed box body. One side of the mixing chamber is equidistantly and fixedly connected with transverse pipes, and air holes are equidistantly arranged on the transverse pipes. The other side of the mixing chamber is fixedly connected with a connecting pipe, and one end of the connecting pipe extends to the outside of the sealed box body and is connected to the gas storage tank assembly through a seal valve mechanism.

[0008] Preferably, the gas storage tank assembly includes a first tank, a second tank, and a third tank installed at the bottom of the cabinet. Sealed valve mechanisms are provided at the output ends of all three, and the gases stored in the three are nitrogen, helium, and argon respectively.

[0009] Preferably, the ceramic baffle is in the shape of a round cake, which is concave from the outer circle to the center, and pre-crack grooves are annularly arranged on both sides of the ceramic baffle.

[0010] Preferably, the crushing mechanism includes a seal fixedly connected inside the housing. A firing pin is movably connected inside the seal. One end of the firing pin extends outside the seal. A gas storage cavity is arranged in the seal, and an arc generator is fixedly connected to the seal. The electrode end of the arc generator extends into the gas storage cavity; The gas storage cavity stores combustible gas. When the barometer monitors a decrease in the pressure inside the sealed box body, it can drive the arc generator to operate, causing the gas in the gas storage cavity to burn and increasing the pressure in the gas storage cavity, thereby pushing the firing pin to pierce through the ceramic baffle.

[0011] Preferably, the seal valve mechanism further includes an exhaust component provided on the seal; The exhaust component includes a secondary pipe fixedly connected to the seal. A first diaphragm is arranged in the cavity of the secondary pipe. The top of the secondary pipe extends to the outside of the housing and is fixedly connected to an exhaust pipe communicating with the outside; the gas storage cavity can be communicated with the secondary pipe through the seal.

[0012] Preferably, the secondary air supplement mechanism includes a vertical pipe fixedly connected to the housing. The bottom end of the vertical pipe extends below the cabinet. Metal porous plates are vertically and equidistantly fixedly connected inside the vertical pipe. A second diaphragm for blocking the vertical pipe is fixedly connected to the upper surface of the metal porous plate. A heating coil is also provided at the bottom of the cabinet. The coil part of the heating coil is sleeved outside the vertical pipe, and the metal porous plate and the second diaphragm are within the range of the vertical pipe coil. A water absorption component is also arranged in the vertical pipe above the heating coil; Operating the heating coil can heat the metal porous plate, thereby melting the second diaphragm.

[0013] Preferably, the water absorption component includes silica gel desiccant and activated carbon. The silica gel desiccant is located inside the vertical tube, and the activated carbon is located above and below the silica gel desiccant respectively.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: When the gas pressure inside the sealed box is monitored by the barometer to decrease in the above solution, first, the warning mechanism inside the cabinet will transmit the data to the control center, and at the same time, the crushing mechanism starts to operate and pierces the ceramic baffle. At this time, the gas inside the gas storage tank assembly will be input into the sealed box through the housing and the pipeline assembly, so as to ensure that the pressure inside the sealed box and the insulating gas can maintain a stable positive pressure state within one hour, and ensure that the sealed box is still filled with insulating gas within two hours, thus solving the problem that the normal operation of the equipment is affected when the gas leakage in the gas-insulated cabinet in remote areas cannot be maintained in time when the operation cannot reach the site in time; After the gas inside the gas storage tank assembly is exhausted, the barometer will monitor that the inside of the sealed box is at normal atmospheric pressure. If the operator has not arrived yet, at this time, the heating coil will start to operate and heat the metal perforated plate, so that the diaphragm II is melted, and the temperature rise of the metal perforated plate will heat the gas inside the vertical tube, and the hot air flow will rise and be absorbed by the water absorption component to become dry gas and then enter the housing and continuously enter the sealed box through the pipeline assembly, further increasing the stable operation time of the electrical equipment inside the sealed box. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a front view plane cross-sectional view of the present invention; Figure 3 is a schematic diagram of the structure of the pipeline assembly of the present invention; Figure 4 is a front partial cross-sectional structure diagram of the present invention; Figure 5 is Figure 4 an enlarged view of part A in Figure 6 is Figure 4 an enlarged view of part B in Figure 7 is Figure 4 an enlarged view of part C in Figure 8 is a schematic diagram of the structure of the ceramic baffle of the present invention.

[0016] In the figure: 1, cabinet body; 11, sealed box body; 12, barometer; 2, pipeline assembly; 21, connecting pipe; 22, mixing chamber; 23, horizontal pipe; 24, air hole; 3, gas storage tank assembly; 31, tank body one; 32, tank body two; 33, tank body three; 4, sealed valve mechanism; 41, housing; 42, crushing mechanism; 421, seal; 422, striker; 423, arc generator; 424, gas storage chamber; 43, ceramic baffle; 431, pre-cracking groove; 44, exhaust assembly; 441, auxiliary pipeline; 442, diaphragm one; 443, exhaust pipe; 5, secondary air supplement mechanism; 51, vertical pipe; 52, metal porous plate; 53, diaphragm two; 54, heating coil; 55, water absorption assembly; 551, silica gel desiccant; 552, activated carbon. Detailed implementation mode

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0018] As Figures 1 to 8 shown, the present invention provides a new energy electrical cabinet with a gas insulation structure, including a cabinet body 1 and a sealed box body 11 installed thereon. A barometer 12 is also arranged in the sealed box body 11. It further includes: a pipeline assembly 2, which is fixedly communicated with the bottom of the cabinet body 1; a gas storage tank assembly 3, which is arranged at the bottom of the cabinet body 1 and can input insulating gas into the sealed box body 11 through the pipeline assembly 2; a sealed valve mechanism 4, which is installed at the output end of the gas storage tank assembly 3 to connect the gas storage tank assembly 3 and the pipeline assembly 2 when the sealed box body 11 leaks air; The sealed valve mechanism 4 includes a housing 41 fixedly communicated with the output end of the gas storage tank assembly 3. The other end of the housing 41 is communicated with the pipeline assembly 2. A ceramic baffle 43 for blocking the communication between the housing 41 and the pipeline assembly 2 is fixedly connected inside the output end of the housing 41. A crushing mechanism 42 for piercing the ceramic baffle 43 is fixedly connected inside the housing 41; An auxiliary pipeline 441 is also communicated with the housing 41 and is used for continuously supplementing dry gas into the pipeline assembly 2 after the gas in the gas storage tank assembly 3 is exhausted; With the above solution, when the gas pressure inside the sealed box 11 is detected to decrease by the barometer 12, first, the warning mechanism inside the cabinet 1 will transmit the data to the control center. At the same time, the crushing mechanism 42 starts to operate and pierces through the ceramic baffle 43. At this time, the gas inside the gas storage tank assembly 3 will be input into the sealed box 11 through the housing 41 and the pipeline assembly 2, so as to ensure that the pressure inside the sealed box 11 and the insulating gas can maintain a stable positive pressure state within one hour, and ensure that the inside of the sealed box 11 is still filled with insulating gas within two hours, thus solving the problem that the operation cannot reach the site in time for maintenance when the gas leaks in the gas-insulated cabinet in remote areas, which affects the normal operation of the equipment; It should be noted that the device needs to be replaced after use.

[0019] As Figures 2 - 4 shown, the pipeline assembly 2 includes a mixing chamber 22 fixedly installed inside the sealed box 11. The mixing chamber 22 is equidistantly and fixedly communicated with horizontal pipes 23 on one side. Air holes 24 are equidistantly arranged on the horizontal pipes 23. The other side of the mixing chamber 22 is fixedly communicated with a connecting pipe 21. One end of the connecting pipe 21 extends outside the sealed box 11 and is communicated with the gas storage tank assembly 3 through the sealing valve mechanism 4; The gas storage tank assembly 3 includes a first tank 31, a second tank 32 and a third tank 33 installed at the bottom of the cabinet 1. Sealing valve mechanisms 4 are provided at the output ends of all three. And the gases stored in the three are nitrogen, helium and argon respectively; With the above solution, by filling different gases in the three tanks, when the three gases enter the mixing chamber 22 and are mixed, they will be slowly transported into the sealed box 11 through the air holes 24. At this time, the heavier argon gas will deposit at the bottom of the sealed box 11 to avoid the situation of leakage at the bottom of the sealed box 11 first, while the helium gas can quickly rise to the top of the sealed box 11 to avoid leakage at its top; and nitrogen is used to fill the sealed box 11 in large quantities because of its low price.

[0020] As Figures 3 - 5 and Figure 8 shown, the ceramic baffle 43 is in the shape of a round cake, which is recessed from the outer circle to the center, and pre-cracked grooves 431 are annularly arranged on both sides of the ceramic baffle 43; The crushing mechanism 42 includes a seal 421 fixedly connected inside the housing 41. A striker 422 is movably connected inside the seal 421. One end of the striker 422 extends outside the seal 421. A gas storage chamber 424 is arranged in the seal 421. An arc generator 423 is fixedly connected to the seal 421. The electrode end of the arc generator 423 extends into the gas storage chamber 424; The gas storage chamber 424 stores combustible gas. When the barometer 12 detects a decrease in pressure in the sealed box 11, it drives the arc generator 423 to operate, causing the gas in the gas storage chamber 424 to burn and increase the pressure in the gas storage chamber 424, thereby pushing the striker 422 to penetrate the ceramic baffle 43. By adopting the above solution, the combustible gas in the gas storage chamber 424 is ignited by the arc generator 423 to provide greater pressure, so that the striker 422 can penetrate the ceramic baffle 43. Combined with the opening of the pre-crack groove 431, it can be ensured that the ceramic baffle 43 can be penetrated. At the same time, the ceramic baffle 43 can also prevent the device from being able to withstand the pressure in the gas tank assembly 3 when it is not working.

[0021] like Figures 3 - 5 As shown, the sealing valve mechanism 4 further includes an exhaust assembly 44 disposed on the sealing member 421; the exhaust assembly 44 includes a secondary pipe 441 fixedly connected to the sealing member 421, a diaphragm 442 is disposed in the cavity of the secondary pipe 441, and the top of the secondary pipe 441 extends to the outside of the housing 41 and is fixedly connected to an exhaust pipe 443 that is connected to the outside; the air storage chamber 424 can be connected to the secondary pipe 441 through the sealing member 421; With the above solution, when the gas in the gas storage chamber 424 is ignited and pushes the striker 422 to move, the gas storage chamber 424 is now connected to the bottom of the auxiliary pipe 441. Due to the increased pressure in the gas storage chamber 424, the diaphragm 442 will also burst, so that the auxiliary pipe 441 is connected to the outside through the exhaust pipe 443, so that the exhaust gas in the gas storage chamber 424 can be discharged through the exhaust assembly 44.

[0022] like Figures 2 - 7 As shown, the secondary air supply mechanism 5 includes a vertical pipe 51 fixedly connected to the shell 41, the bottom end of the vertical pipe 51 extends to the bottom of the cabinet 1, and metal porous plates 52 are fixedly connected vertically and equidistantly in the vertical pipe 51. The upper surface of the metal porous plate 52 is fixedly connected to the second diaphragm 53 for blocking the vertical pipe 51. A heating coil 54 is also provided at the bottom of the cabinet 1. The coil portion of the heating coil 54 is sleeved on the outside of the vertical pipe 51, and the metal porous plate 52 and the second diaphragm 53 are within the range of the coil of the vertical pipe 51. A water absorption component 55 is also provided in the vertical pipe 51 and is located above the heating coil 54. The operation of the heating coil 54 can heat the metal porous plate 52, thereby melting the second diaphragm 53. The water absorption component 55 includes a silica gel desiccant 551 and activated carbon 552. The silica gel desiccant 551 is located in the vertical pipe 51, and the activated carbon 552 is located above and below the silica gel desiccant 551 respectively. With the above solution, after the gas inside the gas storage tank assembly 3 is exhausted, the barometer 12 will detect that the inside of the sealed box 11 is at normal atmospheric pressure. If the operator has not arrived yet, the heating coil 54 will start running and heat the metal porous plate 52, thereby melting the diaphragm II 53. The temperature rise of the metal porous plate 52 will heat the gas inside the vertical pipe 51, and the hot air flow will rise and be absorbed by the water absorption assembly 55 to become dry gas, then enter the housing 41 and continuously enter the sealed box 11 through the pipeline assembly 2, further increasing the stable operation time of the electrical equipment inside the sealed box 11; It should be noted that by connecting the vertical pipe 51 to the housing 41, the inside of the vertical pipe 51 remains sealed when it is not working. At the same time, the gas inside the gas storage tank assembly 3 can also protect the water absorption assembly 55, so that the device can be stored for a long time.

[0023] The working principle and usage process of the present invention: When the barometer 12 detects that the gas pressure inside the sealed box 11 decreases, first, the warning mechanism inside the cabinet 1 will transmit the data to the control center, and at the same time, the crushing mechanism 42 will start running and break through the ceramic baffle 43. At this time, the gas inside the gas storage tank assembly 3 will be input into the sealed box 11 through the housing 41 and the pipeline assembly 2, thereby ensuring that the pressure inside the sealed box 11 and the insulating gas can maintain a stable positive pressure state within one hour, and ensuring that the inside of the sealed box 11 is still filled with insulating gas within two hours; When the gas inside the gas storage tank assembly 3 is exhausted, the barometer 12 will detect that the inside of the sealed box 11 is at normal atmospheric pressure. If the operator has not arrived yet, the heating coil 54 will start running and heat the metal porous plate 52, thereby melting the diaphragm II 53. The temperature rise of the metal porous plate 52 will heat the gas inside the vertical pipe 51, and the hot air flow will rise and be absorbed by the water absorption assembly 55 to become dry gas, then enter the housing 41 and continuously enter the sealed box 11 through the pipeline assembly 2, further increasing the stable operation time of the electrical equipment inside the sealed box 11.

[0024] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0025] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy electrical cabinet with a gas insulation structure, comprising a cabinet body (1) and a sealed box body (11) installed thereon, and a barometer (12) is further arranged in the sealed box body (11), characterized in that, It also includes: A pipeline component (2) fixedly connected to the bottom of the cabinet body (1); A gas storage tank component (3) arranged at the bottom of the cabinet body (1) and capable of inputting insulating gas into the sealed box body (11) through the pipeline component (2); A sealing valve mechanism (4) installed at the output end of the gas storage tank component (3) for connecting the gas storage tank component (3) and the pipeline component (2) when the sealed box body (11) leaks; The sealing valve mechanism (4) includes a shell (41) fixedly connected to the output end of the gas storage tank component (3), the other end of the shell (41) is connected to the pipeline component (2), a ceramic baffle (43) for blocking the connection between the shell (41) and the pipeline component (2) is fixedly connected inside the output end of the shell (41), and a crushing mechanism (42) for breaking through the ceramic baffle (43) is fixedly connected inside the shell (41); A secondary gas replenishing mechanism (5) for continuously replenishing dry gas into the pipeline component (2) after the gas in the gas storage tank component (3) is exhausted is also connected to the shell (41).

2. The new energy electrical cabinet with a gas insulation structure according to claim 1, characterized in that: The pipeline component (2) includes a mixing chamber (22) fixedly installed inside the sealed box body (11), a plurality of horizontal pipes (23) are equidistantly and fixedly connected to one side of the mixing chamber (22), air holes (24) are equidistantly arranged on the horizontal pipes (23), a connecting pipe (21) is fixedly connected to the other side of the mixing chamber (22), and one end of the connecting pipe (21) extends outside the sealed box body (11) and is connected to the gas storage tank component (3) through the sealing valve mechanism (4).

3. The new energy electrical cabinet with a gas insulation structure according to claim 2, characterized in that: The gas storage tank component (3) includes a first tank body (31), a second tank body (32) and a third tank body (33) installed at the bottom of the cabinet body (1), sealing valve mechanisms (4) are arranged at the output ends of all of them, and the gases stored in them are nitrogen, helium and argon respectively.

4. The new energy electrical cabinet with a gas insulation structure according to claim 1, characterized in that: The ceramic baffle (43) is in a disc shape, concave from the outer circle to the center, and pre-crack grooves (431) are annularly arranged on both sides of the ceramic baffle (43).

5. The new energy electrical cabinet with a gas insulation structure according to claim 1, characterized in that: The crushing mechanism (42) includes a seal (421) fixedly connected inside the shell (41), a firing pin (422) is movably connected inside the seal (421), one end of the firing pin (422) extends outside the seal (421), a gas storage cavity (424) is arranged in the seal (421), and an arc generator (423) is fixedly connected to the seal (421), and the electrode end of the arc generator (423) extends into the gas storage cavity (424); Combustible gas is stored in the gas storage cavity (424). When the barometer (12) monitors that the pressure inside the sealed box body (11) decreases, it can drive the arc generator (423) to operate, so that the gas in the gas storage cavity (424) burns and increases the pressure in the gas storage cavity (424), thereby pushing the firing pin (422) to break through the ceramic baffle (43).

6. The new energy electrical cabinet with a gas insulation structure according to claim 5, characterized in that: The sealing valve mechanism (4) also includes an exhaust assembly (44) arranged on the seal (421); The exhaust assembly (44) includes a secondary pipe (441) fixedly communicated with the seal (421). A first diaphragm (442) is arranged in the cavity of the secondary pipe (441). The top of the secondary pipe (441) extends to the outside of the housing (41) and is fixedly communicated with an exhaust pipe (443) communicated with the outside; The air storage cavity (424) can be communicated with the secondary pipe (441) through the seal (421).

7. The new energy electrical cabinet with a gas insulation structure according to claim 1, characterized in that: The secondary air supplement mechanism (5) includes a vertical pipe (51) fixedly communicated with the housing (41). The bottom end of the vertical pipe (51) extends below the cabinet body (1). Metal porous plates (52) are vertically and equidistantly fixed in the vertical pipe (51). A second diaphragm (53) for blocking the vertical pipe (51) is fixedly connected to the upper surface of the metal porous plate (52). A heating coil (54) is further arranged at the bottom of the cabinet body (1). The coil part of the heating coil (54) is sleeved outside the vertical pipe (51), and the metal porous plate (52) and the second diaphragm (53) are within the range of the coil of the vertical pipe (51). An absorbent assembly (55) is further arranged in the vertical pipe (51) above the heating coil (54); Operating the heating coil (54) can heat the metal porous plate (52) so that the second diaphragm (53) is melted.

8. The new energy electrical cabinet with a gas insulation structure according to claim 7, wherein: The absorbent assembly (55) includes silica gel desiccant (551) and activated carbon (552). The silica gel desiccant (551) is located in the vertical pipe (51), and the activated carbon (552) is respectively located above and below the silica gel desiccant (551).

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