Gas supplementing mechanism for GIS (Gas Insulated Switchgear) gas chamber

Abstract

The utility model discloses a gas supplementing mechanism for a GIS (gas insulated switchgear) gas chamber, which relates to the technical field of GIS electrical equipment and comprises a cart, a base is fixedly connected to one side of the bottom of the cart, a gas cylinder is arranged in the middle of the base, a control structure is mounted at the top of the cart, and an adjusting structure is mounted at the bottom of the cart. According to the gas supplementing mechanism for the GIS gas chamber, the control box can detect the gas pressure of the gas chamber and the gas cylinder in real time under the action of the control structure, so that when the gas pressure value of the gas chamber reaches a preset start-stop value, the electromagnetic valve is opened and closed immediately, the safety of the GIS gas chamber is protected, and the gas supplementing operation is completed until the gas pressure in the GIS gas chamber is stable. The problem that the operation process is tedious and lengthy due to the fact that a manual valve needs to be manually opened and closed for multiple times in the inflation process is solved, meanwhile, operators can be liberated, and the problem that personal safety is affected due to the fact that the operators stay nearby the GIS air chamber for a long time is solved.

Description

Technical Field

[0001] This utility model relates to the field of GIS electrical equipment technology, and in particular to a gas replenishment mechanism for GIS gas chambers. Background Technology

[0002] Gas-insulated electrical equipment (GIS) is an electrical device that combines high-voltage components such as busbars, circuit breakers, current transformers (CTs), voltage transformers (PTs), disconnectors, and surge arresters. It is widely used in ultra-high-voltage substations. This equipment boasts advantages such as high reliability and safety, small installation footprint, long service life, long maintenance cycles, low maintenance workload, and wide applicability. GIS equipment is internally designed with multiple gas barriers and is highly dependent on SF6 during operation and maintenance. Long-term operation of GIS equipment can lead to SF6 gas leakage and a gradual decrease in pressure due to equipment vibration, seal aging, and other factors. Maintenance personnel will take measures to replenish SF6 to maintain the SF6 pressure above the critical value, preventing a sharp decline in the internal insulation and arc-extinguishing performance of the equipment, which could seriously threaten the safety of the power system.

[0003] In the existing GIS gas chamber replenishment mechanism, the frequent manual opening and closing of the manual valve during actual use results in a high consumption of manpower and a long working time. Personnel need to repeatedly go to the site to work, which can easily cause fatigue. As a result, the replenishment method of SF6 by the air filling cart is inefficient, the working environment is harsh, and it has a certain impact on the health of the operators. It is not suitable for replenishment for a long time.

[0004] Therefore, a gas replenishment mechanism for GIS gas chambers is proposed to address the above problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, manual SF6 replenishment methods are labor-intensive, time-consuming, and require repeated on-site visits, leading to worker fatigue. Therefore, the SF6 replenishment method using an inflation cart is inefficient, operates in a harsh environment, and negatively impacts operator health, making it unsuitable for prolonged replenishment operations. This paper proposes a SF6 replenishment mechanism for GIS gas chambers.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a gas replenishment mechanism for a GIS gas chamber, including a trolley, a base fixedly connected to one side of the bottom of the trolley, a gas cylinder disposed in the middle of the base, a control structure installed on the top of the trolley, and an adjustment structure installed on the bottom of the trolley. The control structure includes a control box installed on the top of the trolley. The control box contains a gas chamber pressure controller, a gas chamber pressure sensor, a gas cylinder pressure sensor, a gas cylinder pressure controller, and a solenoid valve. The gas chamber pressure controller and the gas chamber pressure sensor are electrically connected, and the gas cylinder pressure sensor and the gas cylinder pressure controller are electrically connected. A delivery pipe is fixedly connected to the end of the solenoid valve. The outside of the delivery pipe is fixedly installed to the middle of the gas chamber pressure sensor and the gas cylinder pressure sensor, respectively. A second gas pipe is fixedly connected to the output end of the gas chamber pressure sensor, and a first gas pipe is fixedly connected to the input end of the gas cylinder pressure sensor.

[0007] Preferably, the top of the base is provided with an arc-shaped groove, and a weighing module is installed inside the arc-shaped groove. The top of the weighing module abuts against the bottom of the gas cylinder, and the inner wall of the arc-shaped groove is inserted into the bottom of the gas cylinder.

[0008] Preferably, a manual valve is installed on the top of the gas cylinder, one end of which is fixedly connected to one end of the gas pipe, and a bracket is fixedly connected to the middle of the trolley. A silicone rubber heating sleeve is fitted in the middle of the bracket, and the silicone rubber heating sleeve is located outside the outer wall of the gas cylinder.

[0009] Preferably, an arc-shaped limiting plate is fixedly connected to the top of the middle part of the trolley, the inner wall of the arc-shaped limiting plate overlaps with the outer wall of the gas cylinder, a rotating rod is rotatably connected to the top of the trolley, a pressure plate is fixedly connected to the outer wall of the rotating rod, a rectangular plate is fixedly connected to one side of the pressure plate, a sliding rod penetrating the rectangular plate is fixedly connected to one side of the rectangular plate, a rectangular frame is fixedly connected to the end of the sliding rod away from the rectangular plate, a plurality of rubber rollers are rotatably connected inside the rectangular frame, a sleeve rod is fixedly connected to the bottom end of the pressure plate, and the end of the silicone rubber heating sleeve is sleeved on the outer wall of the sleeve rod.

[0010] Preferably, a spring is sleeved at the end of the slide rod, and the two ends of the spring are fixedly connected to the opposite surfaces of the rectangular frame and the pressure plate, respectively.

[0011] Preferably, the adjustment structure includes a pedal, a steel wire rope is fixedly connected to the top of the pedal, a take-up reel is fixedly connected to the top of the steel wire rope, and a pulley assembly is installed at the bottom of the rotating rod and the top of the take-up reel, the pulley assembly extending through both sides of the trolley.

[0012] Preferably, a slide rod is fixedly connected to the bottom end of the pedal, a trapezoidal block is fixedly connected to the bottom end of the slide rod, a rectangular box is fixedly connected to the side of the bottom of the trolley away from the base, and a pull rod that passes through the rectangular box is slidably connected to both ends of the rectangular box. Taking one pull rod as an example, a wedge is fixedly connected to one end of the pull rod inside the rectangular box, and a second spring is sleeved on the outside of the pull rod. The two ends of the second spring are fixedly connected to the inner wall of the rectangular box and one side of the wedge, respectively.

[0013] Preferably, a limiting sleeve is fixedly connected to the bottom of the trolley on the side away from the base, and the inside of the limiting sleeve is slidably connected to the outer wall of the slide rod.

[0014] Preferably, the two pull rods are fixedly connected to a traction rope at one end of the rectangular box, and a push plate is fixedly connected to the opposite side of the two traction ropes. The two ends of the push plate are slidably connected to one side of the rectangular box.

[0015] Preferably, a fixing box is fixedly connected to the top of the trolley on the side away from the control box, the middle part of the fixing box is rotatably connected to the top of the rotating rod, a coil spring is fixedly connected to the inner wall of the fixing box, and the inner end of the coil spring is fixedly connected to the outer wall of the top of the rotating rod.

[0016] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0017] 1. This utility model provides a gas replenishment mechanism for GIS gas chambers. Through the function of the control structure, the control box can detect the gas pressure of the gas chamber and gas cylinder in real time. When the gas pressure value of the gas chamber reaches the preset start and stop value, the solenoid valve is immediately opened and closed to protect the safety of the GIS gas chamber until the internal gas pressure of the GIS gas chamber stabilizes and the gas replenishment operation is completed. This avoids the problem of having to manually open and close the manual valve multiple times during the inflation process, which leads to a cumbersome and lengthy operation process. At the same time, it can free up operators and avoid operators staying near the GIS gas chamber for a long time, thus avoiding personal safety issues.

[0018] 2. This utility model provides a gas replenishment mechanism for a GIS gas chamber. By adjusting the structure, when the foot pedal is stepped on, the trapezoidal block slides downward, which then squeezes the wedge block, causing the wedge block to lock onto the trapezoidal block and fix it in place. At this time, the rubber roller is pressed against the surface of the gas cylinder, the silicone rubber heating sleeve completely covers the outer wall of the gas cylinder, the coil spring is in an expanded state, and the overall mechanism is in a stable state. This further reduces the difficulty of manual operation, improves the convenience of operation, and indirectly improves the working efficiency of the gas replenishment mechanism. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of this utility model from another perspective;

[0021] Figure 3 This is a schematic diagram of the trachea structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the internal structure of the control box of this utility model.

[0023] Figure 5 This is a schematic diagram of the silicone rubber heating jacket structure of this utility model;

[0024] Figure 6 This is a schematic diagram of the rectangular plate structure of this utility model;

[0025] Figure 7 This is a schematic diagram of the rubber roller structure of this utility model;

[0026] Figure 8 This is a schematic diagram of the limiting sleeve structure of this utility model;

[0027] Figure 9 This is a schematic diagram of the cross-sectional structure of the rectangular box of this utility model;

[0028] Figure 10 This utility model Figure 5 Enlarged view of point A in the image;

[0029] Figure 11 This is a flowchart illustrating the inflation logic of this utility model.

[0030] In the diagram: 1. Trolley; 2. Base; 3. Gas cylinder; 4. Control structure; 41. Control box; 42. Manual valve; 421. Cylinder pressure sensor; 43. Gas pipe one; 44. Solenoid valve; 45. Gas chamber pressure sensor; 451. Gas chamber pressure controller; 46. Gas pipe two; 47. Arc-shaped groove; 48. Weighing module; 49. Bracket; 410. Silicone rubber heating jacket; 411. Arc-shaped limit plate; 412. Rotating rod; 413. Pressure plate; 414. Rectangular... 415. Shaped plate; 416. Spring 1; 417. Rectangular frame; 418. Rubber roller; 419. Sleeve rod; 410. Air chamber pressure controller; 51. Adjustment structure; 52. Pedal; 53. Steel wire rope; 54. Take-up reel; 55. Pulley assembly; 56. Slide rod; 57. Trapezoidal block; 58. Limiting sleeve; 59. Rectangular box; 50. Wedge block; 510. Spring 2; 511. Pull rod; 512. Traction rope; 513. Push plate; 514. Fixing box; 515. Coil spring. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Specific implementation examples are given below.

[0033] Please see Figure 1 - Figure 11 This utility model provides a technical solution: a gas replenishment mechanism for a GIS gas chamber, including a trolley 1, a base 2 fixedly connected to one side of the bottom of the trolley 1, a gas cylinder 3 disposed in the middle of the base 2, a control structure 4 installed on the top of the trolley 1, and an adjustment structure 5 installed on the bottom of the trolley 1. The control structure 4 includes a control box 41 installed on the top of the trolley 1, and the control box 41 contains a gas chamber pressure controller 451, a gas chamber pressure sensor 45, a gas cylinder pressure sensor 421, a gas cylinder pressure controller 419, and a solenoid valve 44. The gas chamber pressure controller 451 and the gas chamber... Pressure sensor 45 is electrically connected, as are cylinder pressure sensor 421 and cylinder pressure controller 419. A delivery pipe is fixedly connected to the end of solenoid valve 44. The exterior of the delivery pipe is fixedly installed to the middle of both chamber pressure sensor 45 and cylinder pressure sensor 421. A second gas pipe 46 is fixedly connected to the output end of chamber pressure sensor 45, and a first gas pipe 43 is fixedly connected to the input end of cylinder pressure sensor 421. Chamber pressure sensor 45 collects the SF6 pressure value inside the GIS gas chamber in real time and transmits the data to chamber pressure controller 419 for processing. When the pressure value is lower than the preset start threshold, the solenoid valve 44 is opened to replenish SF6. When the pressure value is higher than the stop threshold, the solenoid valve 44 is closed to stop replenishing SF6, thus achieving automatic replenishment. The cylinder pressure sensor 421 collects the SF6 pressure value inside the SF6 cylinder 3 in real time and transmits the data to the cylinder pressure controller 419 for processing. When the pressure value is lower than the start threshold, the silicone rubber heating jacket 410 is activated to heat and accelerate SF6 vaporization. When the pressure value is higher than the stop threshold, the silicone rubber heating jacket 410 is closed to ensure the SF6 gas supply. This design achieves a streamlined process, avoiding the need for manual closing of the manual valve 42 multiple times during inflation, which leads to a cumbersome and lengthy workflow. It also frees up operators, preventing them from spending extended periods near the GIS gas chamber and compromising their safety. Furthermore, to ensure the device stops operating when the SF6 cylinder 3 pressure is too low, the device does not allow gas replenishment when the pressure is below the inflation start value, and closes the solenoid valve 44 to stop replenishment. Conversely, when the SF6 cylinder 3 pressure is above the inflation start value, the device allows gas replenishment, and opens the solenoid valve 44 to replenish gas.

[0034] It should be noted that the control box 41 is equipped with a weighing module 48 controller and a silicone rubber heating jacket 410 controller. Together with the gas chamber pressure controller 451, the cylinder pressure sensor 421, the gas chamber pressure sensor 45, and the cylinder pressure controller 419, they are all mature electrical components in the prior art. The gas chamber pressure controller 451 can adjust the working state of the solenoid valve 44 based on the value of the gas chamber pressure sensor 45, and the cylinder pressure controller 419 can adjust the working state of the solenoid valve 44 based on the value of the cylinder pressure sensor 421. The specific wiring connection method is a common implementation scheme in the prior art. Those skilled in the art can implement this effect simply by description without creatively implementing it. Therefore, it will not be elaborated on here.

[0035] like Figure 5 As shown, the top of the base 2 is provided with an arc-shaped groove 47, and a weighing module 48 is installed inside the arc-shaped groove 47. The top of the weighing module 48 abuts against the bottom of the gas cylinder 3, and the inner wall of the arc-shaped groove 47 is inserted into the bottom of the gas cylinder 3. The weighing module 48 can monitor the remaining amount of gas inside the gas cylinder 3 in real time, so as to grasp the gas replenishment and replacement of the gas cylinder 3 in real time.

[0036] It should be noted that the weighing module 48 includes a weighing sensor and contact circuitry. The control method involves connecting the contact circuitry of the weighing sensor in series with the outlet circuit of the solenoid valve 44. When the weight of the gas cylinder 3 is less than the set value, the contact opens, the outlet circuit of the solenoid valve 44 is disconnected, and gas filling stops. When the weight of the gas cylinder 3 is greater than the set value, the contact closes, opening the gas filling conditions. Those skilled in the art can implement this contact circuitry simply by description without needing to be creatively designed; therefore, it will not be elaborated upon here.

[0037] like Figure 3 and Figure 5 As shown, a manual valve 42 is installed on the top of the gas cylinder 3. One end of the manual valve 42 is fixedly connected to one end of the gas pipe 43. A bracket 49 is fixedly connected to the middle of the trolley 1. A silicone rubber heating sleeve 410 is fitted in the middle of the bracket 49. The silicone rubber heating sleeve 410 is located outside the outer wall of the gas cylinder 3. The silicone rubber heating sleeve 410 can preheat the gas cylinder 3, thereby ensuring the filling pressure, preventing the internal SF6 gas from liquefying, affecting the filling efficiency, improving the utilization rate of the SF6 gas cylinder 3, and effectively reducing the filling time.

[0038] like Figure 5As shown, a curved limiting plate 411 is fixedly connected to the top of the middle part of the trolley 1. The inner wall of the curved limiting plate 411 overlaps with the outer wall of the gas cylinder 3. A rotating rod 412 is rotatably connected to the top of the trolley 1. A pressure plate 413 is fixedly connected to the outer wall of the rotating rod 412. A rectangular plate 414 is fixedly connected to one side of the pressure plate 413. A sliding rod 55 passing through the rectangular plate 414 is fixedly connected to one side of the rectangular plate 414. A rectangular frame 416 is fixedly connected to the end of the sliding rod 55 away from the rectangular plate 414. Several rubber rollers 417 are rotatably connected inside the rectangular frame 416. The bottom end of cylinder 3 is fixedly connected to a sleeve rod 418. The end of the silicone rubber heating sleeve 410 is sleeved on the outer wall of the sleeve rod 418. The pressure plate 413 drives the rectangular frame 416 and the rubber roller 417 to squeeze towards the gas cylinder 3. With the help of the arc-shaped limiting plate 411, the gas cylinder 3 can be stably limited, thereby ensuring the stability of the gas cylinder 3 during transportation and preventing the gas cylinder 3 from shaking due to air pressure when releasing gas. The rotating rubber roller 417 can reduce the friction between the rubber roller 417 and the gas cylinder 3, thereby preventing the friction between the two from affecting the weighing module 48's detection of the weight change of the gas cylinder 3.

[0039] like Figure 6 and Figure 7 As shown, a spring 415 is sleeved at the end of the slide bar 55. The two ends of the spring 415 are fixedly connected to the opposite surfaces of the rectangular frame 416 and the pressure plate 413, respectively. The spring 415 can prevent the rubber roller 417 from making excessive hard contact with the gas cylinder 3, which would cause deformation of both and increase friction.

[0040] like Figure 8 As shown, the adjustment structure 5 includes a pedal 51, a steel wire rope 52 fixedly connected to the top of the pedal 51, a take-up reel 53 fixedly connected to the top of the steel wire rope 52, and a pulley assembly 54 jointly installed at the bottom of the rotating rod 412 and the top of the take-up reel 53. The pulley assembly 54 passes through both sides of the trolley 1. Stepping down on the pedal 51 causes the take-up reel 53 to rotate via the traction rope 512. Through the transmission component of the pulley assembly 54, the rotating rod 412 is driven to rotate, which in turn drives the pressure plate 413 to rotate.

[0041] like Figure 9As shown, a slide rod 55 is fixedly connected to the bottom end of the pedal 51, and a trapezoidal block 56 is fixedly connected to the bottom end of the slide rod 55. A rectangular box 58 is fixedly connected to the bottom of the trolley 1 on the side away from the base 2. A pull rod 511 is slidably connected to both ends of the rectangular box 58, passing through the rectangular box 58. Taking one pull rod 511 as an example, a wedge block 59 is fixedly connected to one end of the pull rod 511 inside the rectangular box 58. A second spring 510 is sleeved on the outside of the pull rod 511. The two ends of the second spring 510 are fixedly connected to the inner wall of the rectangular box 58 and one side of the wedge block 59, respectively. When the foot pedal is pressed... During process 51, the trapezoidal block 56 slides downwards, which in turn squeezes the wedge block 59, causing the second spring 510 to contract. When the trapezoidal block 56 slides below the wedge block 59, the wedge block 59 resets under the reaction force of the second spring 510 and then locks above the trapezoidal block 56, fixing the trapezoidal block 56. At this time, the rubber roller 417 is pressed against the surface of the gas cylinder 3, the silicone rubber heating sleeve 410 completely covers the outer wall of the gas cylinder 3, the coil spring 515 is in an expanded state, and the overall mechanism is in a stable state, thereby further reducing the difficulty of manual operation and improving the convenience of mechanism operation.

[0042] like Figure 8 As shown, a limiting sleeve 57 is fixedly connected to the bottom of the trolley 1 on the side away from the base 2. The inside of the limiting sleeve 57 is slidably connected to the outer wall of the slide rod 55. The limiting sleeve 57 can limit the slide rod 55, thereby ensuring the sliding stability of the pedal 51.

[0043] like Figure 9 As shown, two pull rods 511 are fixedly connected to one end of the rectangular box 58 with traction ropes 512. The opposite sides of the two traction ropes 512 are fixedly connected with push plates 513. The two ends of the push plates 513 are slidably connected to one side of the rectangular box 58. When it is necessary to remove the gas cylinder 3, the shoe tip is used to press the push plate 513, which causes the traction ropes 512 to pull the pull rods 511, which causes the wedge block 59 to slide away from the top of the trapezoidal block 56. At this time, the reaction force of the coil spring 515 causes the rotating rod 412 and the pressure plate 413 to slide away from the gas cylinder 3. Then, through the transmission action of the pulley group 54, the pedal 51 slides up and resets, which further reduces the manual consumption of the operating mechanism.

[0044] like Figure 10 As shown, a fixed box 514 is fixedly connected to the top of the trolley 1 on the side away from the control box 41. The middle part of the fixed box 514 is rotatably connected to the top of the rotating rod 412. A coil spring 515 is fixedly connected to the inner wall of the fixed box 514. The inner end of the coil spring 515 is fixedly connected to the outer wall of the top of the rotating rod 412. The coil spring 515 can keep the pressure plate 413 away from the gas cylinder 3 without the action of external force, thus facilitating the placement of the gas cylinder 3.

[0045] The working principle of this utility model is as follows: In use, first place the gas cylinder 3 inside the arc-shaped groove 47, connect the gas pipe 43 to the solenoid valve 44, and step down on the pedal 51. This causes the take-up reel 53 to rotate via the traction rope 512. Through the transmission assembly of the pulley group 54, the rotating rod 412 rotates, which in turn rotates the pressure plate 413. At this time, the pressure plate 413 causes the rectangular frame 416 and the rubber roller 417 to press against the gas cylinder 3. Combined with the arc-shaped limiting plate 411, this provides stable positioning of the gas cylinder 3, ensuring the stability of the gas cylinder 3 during transport and preventing it from shaking due to air pressure during release. The rotating rubber roller 417 reduces the friction between the rubber roller 417 and the gas cylinder 3, thus preventing the friction from affecting the weighing module. 48. For the detection of weight change in gas cylinder 3, during the rotation of pressure plate 413, sleeve rod 418 drives the end of silicone rubber heating sleeve 410 to rotate, thereby causing silicone rubber heating sleeve 410 to completely wrap around the outside of gas cylinder 3, improving the heating effect of silicone rubber heating sleeve 410. Cylinder pressure sensor 421 collects the SF6 pressure value inside SF6 gas cylinder 3 in real time and transmits the data to cylinder pressure controller 419 for processing in real time. When the pressure value is less than the start threshold, silicone rubber heating sleeve 410 is activated to preheat gas cylinder 3, and then trolley 1 is pushed to push the gas replenishment mechanism to the vicinity of GIS gas chamber. After that, gas pipe 2 46 is connected to the gas chamber. At this time, manual valve 42 is opened, and control box 41 transmits the gas through gas chamber pressure sensor 45. The system collects the SF6 pressure value inside the GIS gas chamber in real time and transmits the data to the gas chamber pressure controller 451 for processing. When the pressure value is lower than the preset start threshold, the solenoid valve 44 is opened to replenish gas. When the pressure value is higher than the stop threshold, the solenoid valve 44 is closed to stop replenishing gas, thus achieving automatic replenishment. During this process, the control box 41 can detect the gas pressure in the gas chamber and gas cylinder 3 in real time. When the gas pressure value in the gas chamber reaches the preset start and stop threshold, the solenoid valve 44 is immediately opened and closed to protect the safety of the GIS gas chamber and SF6 until the gas pressure inside the GIS gas chamber stabilizes and the replenishment operation is completed. This avoids the problem of having to manually close the manual valve 42 multiple times during the filling process, which leads to a cumbersome and lengthy operation. At the same time, it can... To free up operators and prevent them from staying near the GIS gas chamber for extended periods, thus avoiding potential safety issues, the trapezoidal block 56 slides downwards under the limiting sleeve 57 when the foot pedal 51 is pressed, thereby compressing the wedge block 59 and causing the second spring 510 to contract. When the trapezoidal block 56 slides below the wedge block 59, the wedge block 59 returns to its original position under the reaction force of the second spring 510, thus securing the trapezoidal block 56. At this time, the rubber roller 417 is pressed against the surface of the gas cylinder 3, the silicone rubber heating sleeve 410 completely covers the outer wall of the gas cylinder 3, the coil spring 515 is in an expanded state, and the overall mechanism is in a stable state. This further reduces the difficulty of manual operation and improves the ease of operation. When it is necessary to remove the gas cylinder 3...By using the shoe tip to press against the push plate 513, the traction rope 512 pulls the pull rod 511, causing the wedge block 59 to slide away from the top of the trapezoidal block 56. At this time, the reaction force of the coil spring 515 causes the rotating rod 412 and the pressure plate 413 to slide away from the gas cylinder 3. Then, through the transmission action of the pulley group 54, the pedal 51 slides upward and resets, further reducing the manual labor required to operate the mechanism.

[0046] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A gas replenishment mechanism for a GIS gas chamber, comprising a trolley (1), characterized in that: A base (2) is fixedly connected to one side of the bottom of the trolley (1). A gas cylinder (3) is provided in the middle of the base (2). A control structure (4) is installed on the top of the trolley (1). An adjustment structure (5) is installed on the bottom of the trolley (1). The control structure (4) includes a control box (41) installed on the top of the trolley (1). The control box (41) contains a gas chamber pressure controller (451), a gas chamber pressure sensor (45), a gas cylinder pressure sensor (421), a gas cylinder pressure controller (419), and a solenoid valve (44). The air chamber pressure controller (451) and the air chamber pressure sensor (45) are electrically connected. The cylinder pressure sensor (421) and the cylinder pressure controller (419) are electrically connected. The end of the solenoid valve (44) is fixedly connected to a delivery pipe. The outside of the delivery pipe is fixedly installed to the middle of the air chamber pressure sensor (45) and the cylinder pressure sensor (421). The output end of the air chamber pressure sensor (45) is fixedly connected to a second air pipe (46). The input end of the cylinder pressure sensor (421) is fixedly connected to a first air pipe (43).

2. The air replenishment mechanism for a GIS air chamber according to claim 1, characterized in that: The base (2) has an arc-shaped groove (47) on its top. A weighing module (48) is installed inside the arc-shaped groove (47). The top of the weighing module (48) abuts against the bottom of the gas cylinder (3). The inner wall of the arc-shaped groove (47) is inserted into the bottom of the gas cylinder (3).

3. The air replenishment mechanism for a GIS air chamber according to claim 1, characterized in that: A manual valve (42) is installed on the top of the gas cylinder (3). One end of the manual valve (42) is fixedly connected to one end of the gas pipe (43). A bracket (49) is fixedly connected to the middle of the trolley (1). A silicone rubber heating sleeve (410) is fitted in the middle of the bracket (49). The silicone rubber heating sleeve (410) is located outside the outer wall of the gas cylinder (3).

4. The air replenishment mechanism for a GIS air chamber according to claim 3, characterized in that: A curved limiting plate (411) is fixedly connected to the top of the middle part of the trolley (1). The inner wall of the curved limiting plate (411) overlaps with the outer wall of the gas cylinder (3). A rotating rod (412) is rotatably connected to the top of the trolley (1). A pressure plate (413) is fixedly connected to the outer wall of the rotating rod (412). A rectangular plate (414) is fixedly connected to one side of the pressure plate (413). A sliding rod (55) that penetrates the rectangular plate (414) is fixedly connected to one side of the rectangular plate (414). A rectangular frame (416) is fixedly connected to the end of the sliding rod (55) away from the rectangular plate (414). Several rubber rollers (417) are rotatably connected inside the rectangular frame (416). A sleeve rod (418) is fixedly connected to the bottom end of the pressure plate (413). The end of the silicone rubber heating sleeve (410) is sleeved on the outer wall of the sleeve rod (418).

5. The air replenishment mechanism for a GIS air chamber according to claim 4, characterized in that: The end of the slide bar (55) is fitted with a spring (415), and the two ends of the spring (415) are fixedly connected to the opposite surfaces of the rectangular frame (416) and the pressure plate (413), respectively.

6. The air replenishment mechanism for a GIS air chamber according to claim 4, characterized in that: The adjustment structure (5) includes a pedal (51), a steel wire rope (52) is fixedly connected to the top of the pedal (51), a take-up reel (53) is fixedly connected to the top of the steel wire rope (52), and a pulley assembly (54) is installed at the bottom of the rotating rod (412) and the top of the take-up reel (53). The pulley assembly (54) passes through both sides of the trolley (1).

7. The air replenishment mechanism for a GIS air chamber according to claim 6, characterized in that: The bottom end of the pedal (51) is fixedly connected to a slide rod (55), and the bottom end of the slide rod (55) is fixedly connected to a trapezoidal block (56). The bottom of the trolley (1) is fixedly connected to a rectangular box (58) on the side away from the base (2). The two ends of the rectangular box (58) are slidably connected to a pull rod (511) that passes through the rectangular box (58). Taking one pull rod (511) as an example, the end of the pull rod (511) located inside the rectangular box (58) is fixedly connected to a wedge (59). The outside of the pull rod (511) is fitted with a second spring (510). The two ends of the second spring (510) are fixedly connected to the inner wall of the rectangular box (58) and one side of the wedge (59), respectively.

8. The air replenishment mechanism for a GIS air chamber according to claim 7, characterized in that: The bottom of the trolley (1) is fixedly connected to a limiting sleeve (57) on the side away from the base (2), and the inside of the limiting sleeve (57) is slidably connected to the outer wall of the slide rod (55).

9. A gas replenishment mechanism for a GIS gas chamber according to claim 7, characterized in that: Two pull rods (511) are fixedly connected to one end of the rectangular box (58) with traction ropes (512), and push plates (513) are fixedly connected to the opposite sides of the two traction ropes (512). The two ends of the push plates (513) are slidably connected to one side of the rectangular box (58).

10. A gas replenishment mechanism for a GIS gas chamber according to claim 4, characterized in that: A fixed box (514) is fixedly connected to the top of the trolley (1) on the side away from the control box (41). The middle part of the fixed box (514) is rotatably connected to the top of the rotating rod (412). A coil spring (515) is fixedly connected to the inner wall of the fixed box (514). The inner end of the coil spring (515) is fixedly connected to the outer wall of the top of the rotating rod (412).

Images