35kv gas insulated switchgear with real-time gas pressure detection

Abstract

The application relates to the field of power facilities and provides a 35KV gas-filled cabinet with real-time air pressure detection, which comprises a machine body, a cabinet body movably connected to the outer surface of the machine body, and a pressure relief tank fixedly connected to one side of the inside of the machine body. After a module adjusting structure is added, the cabinet can be disassembled outside the cabinet, the inside machine body is pulled out, the back of the gas-filled machine body is fixed through the connection of first clamping teeth and second clamping teeth, all the machine bodies do not need to be disassembled, the machine body at the position needing to be adjusted is directly pulled out, the structure is taken out, after a module is installed, the wire arrangement can be quickly carried out, the structure is sealed through the internal magnetic liquid, a machine for detecting the liquid height is installed in the inside of the gas-filled cabinet, when the internal pressure changes, the liquid can quickly react under the sealed state, the detection structure is more accurate than general detection air extraction structures, the detection pressure effect is good, and the structure can also timely supplement the internal gas pressure.

Description

Technical Field

[0001] This invention relates to the field of power facilities, specifically to a 35KV gas-filled switchgear with real-time air pressure detection. Background Technology

[0002] A gas-insulated switchgear is a fully enclosed switchgear where all live parts are completely sealed within a gas chamber. Multiple branch switches can be installed in a single chamber, making the switchgear unaffected by the environment. The biggest advantage of a gas-insulated switchgear is its immunity to external environmental factors such as condensation, dirt, small animals, and chemicals. It also features high-performance oil-free switches, especially its maintenance-free or low-maintenance vacuum switches, significantly reducing maintenance and repair workload. In contrast, existing gas-insulated switchgear requires internal filling with inert gas, which is prone to leakage over time, affecting the effectiveness of the vacuum environment inside the switchgear.

[0003] Regarding the technical problems existing in the aforementioned 35KV gas-insulated switchgear with real-time gas pressure detection, a search revealed a patent (CN202111403355.1) for a novel environmentally friendly gas-insulated switchgear, belonging to the technical field of gas-insulated switchgear. This gas-insulated switchgear includes a gas-insulated cabinet with a door, an inner cabinet, a heat dissipation mechanism, a gas pressure detection mechanism, and several independent gas-insulated chambers within the inner cabinet. Electrical components are modularly arranged within these chambers. The heat dissipation mechanism dissipates heat from the gas-insulated chambers and forms an insulation layer on the outside of the switchgear to prevent external temperature from entering. This heat dissipation mechanism not only dissipates heat from the inside of the switchgear but also isolates it from external heat. The inner cabinet's design with several gas-insulated chambers facilitates the location of leaking insulating gas, improving the efficiency of switchgear maintenance.

[0004] The 35KV gas-filled switchgear with real-time gas pressure monitoring has a problem: due to the presence of insulating gas, the internal modules are fixed and difficult to change after use. Modifications to these modules later in the switchgear's lifespan require complex adjustments. Furthermore, during these modifications, gas leakage is a risk due to the continuous movement of the gas. The internal insulating gas saturation is also low, making timely inspection and refilling difficult. Refilling the insulating gas is also cumbersome. Additionally, after refilling, the internal space is under sealed negative pressure, making it difficult to open the switchgear for inspection and maintenance due to the gas seal. Summary of the Invention

[0005] The purpose of this invention is to provide a 35KV gas-filled switchgear with real-time gas pressure detection.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a 35KV gas-filled switchgear with real-time air pressure detection, comprising a body, a cabinet being movably connected to the outer surface of the body, and a pressure relief box being fixedly connected to one side of the inner side of the body;

[0007] A base plate is fixedly connected to the bottom of the cabinet. A snap plate is movably connected to the inner surface of the cabinet. Return springs are fixedly connected to both sides of the snap plate. An air extractor is fixedly installed inside the cabinet. A first locking tooth is fixedly connected to the middle of the inner surface of the cabinet. A connecting tube is fixedly connected to the top of the first locking tooth. A second locking tooth is fixedly connected to the back of the snap plate. A sealing tube is fixedly connected to the bottom of the second locking tooth. A plug rod is movably connected inside the sealing tube.

[0008] As a further aspect of the present invention: the top of the first tooth is tilted upward, the interior of the first tooth is hollow, and the connecting tube is located at the middle of the top of the tooth block of the first tooth.

[0009] As a further aspect of the present invention: the interior of the second tooth is hollow, the bottom end of the second tooth is tilted downward, the second tooth is adapted to the first tooth, and the first tooth, the cabinet and the air extractor are connected.

[0010] As a further aspect of the present invention: the bottom edge of the sealing tube is skirt-shaped; both the sealing tube and the connecting tube are made of silicone material, and the surfaces of both the sealing tube and the connecting tube are smooth. The insertion rod penetrates the interior of both the sealing tube and the connecting tube.

[0011] As a further embodiment of the present invention: an inflation / deflation valve and an installation bucket are fixedly installed on the top of the pressure relief box, a stabilizing frame is fixedly connected to the top of the installation bucket, a signal transceiver is fixedly installed on one side inside the installation bucket, an electromagnetic block is fixedly installed at the bottom inside the installation bucket, an inner bucket is fixedly connected inside the installation bucket, liquid transfer tubes are fixedly connected to both sides of the inner bucket, a filling box is fixedly connected to the top of the liquid transfer tubes, an air release valve is fixedly installed on the top of the filling box, a liquid level sensor is fixedly installed on the outer surface of the inner bucket, a displacement plate is movably connected inside the inner bucket, and a float is fixedly connected to the top of the displacement plate.

[0012] As a further aspect of the present invention: the top of the mounting barrel is provided with a through hole, and both the through hole of the mounting barrel and the through hole of the stabilizer are located on the vertical axis of the mounting barrel. A partition is provided inside the lower part of the mounting barrel, and the inner barrel is connected to the partition.

[0013] As a further aspect of the present invention: the inner wall of the inner barrel is smooth, the inner barrel is connected to the liquid transfer tube and the filling box, the filling box is diamond-shaped, and the interior of the mounting barrel, the inner barrel, the liquid transfer tube and the filling box is provided with magnetic fluid.

[0014] As a further embodiment of the present invention: the displacement plate is moved from top to bottom inside the inner barrel, and the floats all pass through the through holes of the stabilizing frame and the mounting barrel. Beneficial effects

[0015] 1. The present invention provides a 35KV air-filled switchgear with real-time air pressure detection. After adding the module adjustment structure, it can be disassembled from the outside of the cabinet and the internal body can be pulled out. At the same time, the back of the air-filled body is fixed by the connection of the first and second locking teeth. There is no need to disassemble the entire body. The body to be adjusted can be pulled out directly, the structure can be taken out, the module can be installed, and the wiring can be quickly installed.

[0016] 2. The present invention provides a 35KV gas-filled cabinet with real-time air pressure detection. It has a sealed structure with an internal magnetic liquid. By installing a machine to detect the liquid level inside the gas-filled cabinet, the liquid can react quickly in a sealed state when the internal pressure changes. It has higher accuracy and better pressure detection effect than general detection and extraction structures. It can also replenish the internal gas pressure in a timely manner through the structure.

[0017] 3. The present invention provides a 35KV gas-filled switchgear with real-time air pressure detection. By adsorbing the magnetic fluid, the solid matter in the internal liquid is reduced, which reduces the tightness of the internal seal. By adjusting the intake of external air, it can react in time when the cabinet door is opened, making it convenient for users to open the internal cabinet door for internal repairs. Attached Figure Description

[0018] Figure 1 This is an overall view of the gas-filled cabinet of the present invention.

[0019] Figure 2 This is an overall view of the gas-filled cabinet body of the present invention.

[0020] Figure 3 This is a structural diagram of the cabinet of the present invention.

[0021] Figure 4 This is a structural diagram of the back of the gas-filled cabinet device of the present invention.

[0022] Figure 5 This is a cross-sectional view of the left side of the cabinet of the present invention.

[0023] Figure 6 For the present invention Figure 5 Enlarged view of the structure at point A in the image.

[0024] Figure 7 For the present invention Figure 5 Enlarged view of the structure at point B in the image.

[0025] Figure 8 This is a structural diagram of the internal structure of the gas-filled cabinet of the present invention.

[0026] Figure 9 This is a structural diagram of the top of the pressure relief box of the present invention.

[0027] Figure 10 A cross-sectional view of the mounting bucket of the present invention.

[0028] Figure 11 The inner barrel structure diagram of the present invention.

[0029] Figure 1-11 Components: 1. Main body; 101. Control box; 102. Connection box; 103. Back buckle; 2. Cabinet; 201. Base plate; 202. Buckle plate; 203. Vacuum pump; 204. First locking tooth; 205. Connecting pipe; 206. Second locking tooth; 207. Sealing pipe; 208. Insert rod; 209. Return spring; 3. Pressure relief box; 301. Mounting tank; 302. Air intake / inflation valve; 303. Stabilizer; 304. Float rod; 305. Displacement plate; 306. Liquid level sensor; 307. Liquid transfer tube; 308. Filling box; 309. Air relief valve; 310. Electromagnetic block; 311. Signal transceiver; 312. Inner tank. Detailed Implementation

[0030] Please see Figure 1-11 In this embodiment of the invention,

[0031] Example 1: A 35KV gas-filled switchgear with real-time air pressure detection includes a body 1, a cabinet 2 movably connected to the outer surface of the body 1, and a pressure relief box 3 fixedly connected to one side of the interior of the body 1.

[0032] A base plate 201 is fixedly connected to the bottom of the cabinet 2. A buckle plate 202 is movably connected to the inner surface of the cabinet 2. Return springs 209 are fixedly connected to both sides of the buckle plate 202. An air extractor 203 is fixedly installed inside the cabinet 2. A first locking tooth 204 is fixedly connected to the middle of the inner surface of the cabinet 2. A connecting pipe 205 is fixedly connected to the top of the first locking tooth 204. A second locking tooth 206 is fixedly connected to the back of the buckle plate 202. A sealing pipe 207 is fixedly connected to the bottom of the second locking tooth 206. An insert rod 208 is movably connected inside the sealing pipe 207.

[0033] The cabinet 2 is detached from the body 1. The inner wall of the cabinet 2 is provided with a cross-shaped groove. The buckle plate 202 is adapted to the vertical groove. The front of the cabinet 2 is provided with a cabinet frame connected by bolts. The back of the bottom plate 201 is inclined upward. The bottom plate 201 is adapted to the bottom of the body 1. The bottom plate 201 is provided with an air inlet and outlet channel.

[0034] The top of the first tooth 204 is tilted upward, and the interior of the first tooth 204 is hollow. The connecting tube 205 is located in the middle of the top of the tooth block of the first tooth 204.

[0035] The interior of the second tooth 206 is hollow, and the bottom of the second tooth 206 is tilted downward. The second tooth 206 is adapted to the first tooth 204. The first tooth 204, the second tooth 206, the cabinet 2 and the exhaust fan 203 are connected.

[0036] The bottom edge of the sealing tube 207 is skirt-shaped. Both the sealing tube 207 and the connecting tube 205 are made of silicone, and the surfaces of both are smooth. The insertion rod 208 penetrates the interior of both the sealing tube 207 and the connecting tube 205.

[0037] During the installation and debugging of the machine body 1, the buckle plate 202 is inserted into the back structure of the machine body 1, and the machine body 1 is pushed into the cabinet 2. The machine body 1 slides from the top of the base plate 201 into the cabinet 2. The buckle plate 202 rotates through the pivot to coincide with the inner wall of the cabinet 2, so that the first locking tooth 204 and the second locking tooth 206 are connected. The insertion rod 208 slides upward by touching the object. Finally, it descends when the connecting pipe 205 and the sealing pipe 207 coincide, fixing the two pipes. The air is extracted from the second locking tooth 206 by the operation of the air extractor 203, so that the buckle plate 202 fixes the machine body 1.

[0038] Please see Figure 8-11

[0039] Example 2: The difference between Example 2 and Example 1 is that the pressure relief box 3 is connected to the interior of the body 1.

[0040] The pressure relief box 3 is fixedly installed with an air filling valve 302 and an installation bucket 301. The top of the installation bucket 301 is fixedly connected with a stabilizing frame 303. A signal transceiver 311 is fixedly installed on one side inside the installation bucket 301. An electromagnetic block 310 is fixedly installed at the bottom inside the installation bucket 301. An inner bucket 312 is fixedly connected inside the installation bucket 301. Liquid transfer tubes 307 are fixedly connected on both sides of the inner bucket 312. A filling box 308 is fixedly connected to the top of the liquid transfer tubes 307. An air relief valve 309 is fixedly installed on the top of the filling box 308. A liquid level sensor 306 is fixedly installed on the outer surface of the inner bucket 312. A displacement plate 305 is movably connected inside the inner bucket 312. A float rod 304 is fixedly connected to the top of the displacement plate 305.

[0041] The top of the mounting barrel 301 is provided with a through hole. The through hole of the mounting barrel 301 and the through hole of the stabilizer 303 are both located on the vertical axis of the mounting barrel 301. A partition is provided inside the lower part of the mounting barrel 301, and the inner barrel 312 is connected to the partition.

[0042] The inner wall of the inner barrel 312 is smooth. The inner barrel 312 is connected to the liquid transfer tube 307 and the filling box 308. The filling box 308 is diamond-shaped. Magnetofluid is installed inside the mounting barrel 301, the inner barrel 312, the liquid transfer tube 307 and the filling box 308.

[0043] The displacement plate 305 is moved from top to bottom inside the inner barrel 312, and the floats 304 all pass through the through holes of the stabilizer 303 and the mounting barrel 301;

[0044] In the inflatable cabinet, the pressure change caused by the inflation causes the displacement plate 305 to move within the inner tank 312, allowing the magnetic fluid to fill the filling box 308 through the liquid transfer pipe 307. A portion of the magnetic fluid is also stored inside the installation tank 301. Due to the pressure change, the displacement plate 305 moves upward, creating space within the inner tank 312. When the magnetic fluid level is still, it remains level. The level sensor 306 detects the level change and sends an alarm via the signal transceiver 311. When the user needs to open the sealed unit 1, the electromagnetic block 310 can be used to attract the magnetic material within the magnetic fluid, controlling the opening of the vent valve 309 and exposing the filling box 308 to air. When the unit 1 is opened, the displacement plate 305 moves upward, allowing some air to enter and changing the negative pressure state of the unit 1.

[0045] Please see Figure 1-2 ,

[0046] Example 3: The difference between Example 3 and Example 2 is that the outer surface of the body 1 is provided with a movable operation door.

[0047] A control box 101 is fixedly connected to one side of the body 1, a connection box 102 is fixedly connected to the lower side of one side of the body 1, and a back buckle 103 is fixedly connected to the back of the body 1.

[0048] The control box 101 is integrally formed with the body 1, the connection box 102 and the pressure relief box 3.

[0049] There are three units 1. The bottom rear of the unit 1 is set at an angle that tilts backward.

[0050] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these should also be considered within the scope of protection of the present invention. These will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A 35KV gas-filled switchgear with real-time air pressure detection, characterized in that... , including the body (1); The outer surface of the body (1) is movably connected to the cabinet (2), and the inner side of the body (1) is fixedly connected to the pressure relief box (3). The cabinet (2) is detached from the machine body (1), and the cabinet (2) includes: Base plate (201), buckle plate (202), vacuum pump (203), first locking tooth (204), connecting pipe (205), second locking tooth (206), sealing pipe (207), insert rod (208) and return spring (209); The bottom of the cabinet (2) is fixedly connected to a base plate (201), the inner surface of the cabinet (2) is movably connected to a buckle plate (202), the two sides of the buckle plate (202) are fixedly connected to a return spring (209), the inside of the cabinet (2) is fixedly installed with an air extractor (203), the middle of the inner surface of the cabinet (2) is fixedly connected to a first locking tooth (204), the top of the first locking tooth (204) is fixedly connected to a connecting pipe (205), the back of the buckle plate (202) is fixedly connected to a second locking tooth (206), the bottom of the second locking tooth (206) is fixedly connected to a sealing pipe (207), and the inside of the sealing pipe (207) is movably connected to a plug rod (208). The back of the body (1) is fixedly connected with a back buckle (103). The top of the first tooth (204) is tilted upward, and the interior of the first tooth (204) is hollow. The connecting tube (205) is located in the middle of the top of the tooth block of the first tooth (204). The interior of the second tooth (206) is hollow. The bottom of the second tooth (206) is tilted downward. The second tooth (206) is adapted to the first tooth (204). The first tooth (204), the second tooth (206) and the vacuum pump (203) are connected.

2. The 35KV gas-filled switchgear with real-time air pressure detection as described in claim 1, characterized in that: The inner wall of the cabinet (2) is provided with a "+" shaped groove. The buckle plate (202) is adapted to the vertical groove. The front of the cabinet (2) is provided with a cabinet frame connected by bolts. The back of the bottom plate (201) is inclined upward. The bottom plate (201) is adapted to the bottom of the machine body (1). The bottom plate (201) is provided with an air inlet and outlet channel.

3. A 35KV gas-filled switchgear with real-time air pressure detection as described in claim 1, characterized in that: The bottom edge of the sealing tube (207) is skirt-shaped. Both the sealing tube (207) and the connecting tube (205) are made of silicone material, and the surfaces of the sealing tube (207) and the connecting tube (205) are smooth. The insertion rod (208) penetrates the interior of the sealing tube (207) and the connecting tube (205).

Images