GIS equipment SF6 gas leakage under-pressure plugging device

Abstract

The utility model relates to the technical field of gas leakage plugging, aims to solve the problems that harmful gas leakage is not easy to plug, online equipment cannot be plugged and the plugging efficiency is low in the prior art, and provides a GIS equipment SF6 gas leakage under-pressure plugging device which comprises a G-shaped clamp. The G-shaped clamp is provided with an opening, and a bolt set is arranged at the opening. A horizontal section is arranged on one side of the G-shaped clamp, and a positioning sealing head is connected to the horizontal section in a sliding and sealing mode. A sealed cabin is arranged on the outer side of the horizontal section and fixedly connected to the outer side of the horizontal section, and the end, close to the sealed cabin, of the positioning sealing head is located in the sealed cabin; an air inlet and an air outlet are formed in the outer wall of the sealed cabin, the sealed cabin is connected with a pressure sensor, and the pressure sensor is connected with a pressure display device. The plugging device has the advantages of being easy to operate, rapid in plugging, convenient to plug harmful gas, high in plugging efficiency and capable of plugging on-line equipment, avoiding equipment shutdown and achieving plugging without changing an original equipment structure.

Description

Technical Field

[0001] The utility model relates to the technical field of gas leakage blocking, in particular to a pressure blocking device for SF6 gas leakage of GIS equipment. Background Art

[0002] GIS equipment is a type of high-voltage switchgear in substations. It mainly consists of components such as circuit breakers, disconnectors, grounding switches, transformers, lightning arresters, and busbars. These components are encapsulated in a metal casing and filled with SF6 gas as an insulating medium. The metal casing of the GIS equipment not only supports and fixes the components, but also effectively prevents SF6 gas leakage and the influence of the external environment. GIS equipment can meet the high requirements of converter stations for high-voltage switchgear, ensuring the safe, reliable, and efficient operation of the power system.

[0003] Since GIS equipment is filled with SF6 gas, which is a colorless, odorless, non-toxic, non-flammable and stable gas with good insulation and arc-extinguishing properties, it is widely used in electrical equipment. However, although pure SF6 gas is a non-toxic, non-corrosive inert gas, under high temperature, high pressure or arc conditions, SF6 gas may decompose to produce toxic substances such as SF4, S2F2, S2F10, SOF2, HF and SO2. These decomposition products are harmful to human health and may irritate the skin, eyes and mucous membranes. If inhaled in large quantities, they may cause dizziness, pulmonary edema and even death. In addition, because SF6 gas has a greater specific gravity than oxygen, it will accumulate in low-lying spaces when it leaks, which may cause local hypoxia and suffocation. Therefore, special attention should be paid to the safe use and protection of SF6 gas during operation and maintenance.

[0004] The SF6 gas in GIS equipment operates at rated pressure in a closed space. There is a certain risk of leakage in weak links such as the welding of the sealed metal casing and the docking flange. When a small amount of leakage occurs during the operation of the equipment, it is necessary to promptly discover and take measures to immediately seal the leak to avoid greater losses such as gas injury to personnel and equipment shutdown. Therefore, it is very necessary for substations to solve the problem of emergency pressurized sealing in this situation. Utility Model Content

[0005] The utility model aims to provide a GIS equipment SF6 gas leakage pressure plugging device to solve the problems in the prior art that harmful gas leakage is difficult to plug, online equipment cannot be plugged and the plugging efficiency is low.

[0006] The embodiment of the present utility model is achieved as follows:

[0007] The embodiment of the utility model provides a GIS equipment SF6 gas leakage pressure sealing device, which includes a G-type clamp;

[0008] The G-type clamp has an opening, a bolt group is provided at the opening, and the bolt group is bolted to the opening;

[0009] A horizontal section is provided on the side of the G-shaped clamp away from the opening, and a positioning sealing head is provided in the vertical direction of the horizontal section. An end of the positioning sealing head close to the horizontal section can slide through the horizontal section, and the positioning sealing head and the horizontal section are slidably and sealingly connected to each other;

[0010] A sealed cabin is provided on the outside of the horizontal section, the sealed cabin is fixedly connected to the outside of the horizontal section, and one end of the positioning sealing head close to the sealed cabin is located inside the sealed cabin;

[0011] The outer wall of the sealed cabin is provided with an air inlet and an air outlet. The sealed cabin is connected to a pressure sensor, and the pressure sensor is connected to a pressure display device.

[0012] When in use, first, clamp the above-mentioned G-type clamp at the leakage point of the leakage pipe, so that the bottom end of the above-mentioned positioning sealing head is against the leakage point. Secondly, tighten the above-mentioned G-type clamp through the above-mentioned bolt group, so that the above-mentioned opening spacing becomes smaller and smaller, and the above-mentioned positioning sealing head on the above-mentioned horizontal section moves toward the inside of the above-mentioned sealed cabin under the squeezing action of the leakage pipe. The more the above-mentioned positioning sealing head enters the above-mentioned sealed cabin, the greater the internal air pressure of the above-mentioned sealed cabin. The air pressure inside the above-mentioned sealed cabin presses the above-mentioned positioning sealing head in the opposite direction, so that the above-mentioned positioning sealing head no longer continues to move toward the inside of the above-mentioned sealed cavity, and then the lower end of the above-mentioned positioning sealing head is tightly against the leakage point to achieve sealing. The above-mentioned pressure sensor monitors the air pressure inside the above-mentioned sealed cabin in real time and displays it through the above-mentioned electrically connected pressure display device, which is convenient for staff to watch and record.

[0013] The present embodiment discloses a GIS equipment SF6 gas leakage pressure plugging device. By retracting the G-type clamp, the air pressure inside the sealing cabin presses the positioning sealing head. The positioning sealing head is tightly sealed at the leakage point, thereby realizing a rapid pressure plugging function. As a result, the GIS equipment SF6 gas leakage pressure plugging device has the advantages of simple operation, rapid plugging, convenience in plugging harmful gases, high plugging efficiency, ability to plug leaks in online equipment, avoid equipment shutdown, and achieve the beneficial effects of plugging without changing the original equipment structure.

[0014] Optionally, the G-type clamp comprises a first arc-shaped hoop plate and a second arc-shaped hoop plate, and the same end of the first arc-shaped hoop plate and the second arc-shaped hoop plate are respectively fixedly connected to the two ends of the horizontal section;

[0015] The other ends of the first arc-shaped hoop plate and the second arc-shaped hoop plate correspond to each other, and the opening is located between the other ends of the first arc-shaped hoop plate and the second arc-shaped hoop plate.

[0016] With such arrangement, the mutual cooperation between the first arc-shaped hoop plate and the second arc-shaped hoop plate makes it easy for the sealing device to tighten the hoop to the cylindrical tank body or the docking flange surface for pressure-fixed sealing, thereby ensuring the stability of the sealing.

[0017] Optionally: the other ends of the above-mentioned first arc-shaped hoop plate and the above-mentioned second arc-shaped hoop plate respectively have a first wing plate and a second wing plate, the above-mentioned first wing plate and the above-mentioned second wing plate are parallel to each other and spaced apart, and the above-mentioned bolt group is fixedly and detachably connected to the above-mentioned first wing plate and the above-mentioned second wing plate.

[0018] In this way, the arrangement of the first wing plate and the second wing plate makes it easy for the staff to tighten the first arc hoop plate and the second arc hoop plate through the bolt group, thereby achieving a tight fixation of the sealing device on the cylindrical tank body or the docking flange surface.

[0019] Optionally, the bolt assembly comprises a screw rod, the first wing plate and the second wing plate respectively comprise a coaxial first screw sleeve and a second screw sleeve, the screw rod is threadedly connected to the first screw sleeve and the second screw sleeve in sequence, and a nut is provided on one end of the screw rod.

[0020] With such arrangement, the nut can drive the screw to rotate, and through the screw rotating on the first screw sleeve and the second screw sleeve, the first screw sleeve and the second screw sleeve move closer to each other and drive the first wing plate and the second wing plate to move closer to each other, thereby making the first arc-shaped hoop plate and the second arc-shaped hoop plate clamped more tightly on the cylindrical tank body or the docking flange surface, which is beneficial to improving the sealing effect.

[0021] Optionally: the inner sides of the above-mentioned first arc-shaped hoop plate and the above-mentioned second arc-shaped hoop plate are respectively provided with a first elastic pad and a second elastic pad, the above-mentioned first elastic pad is fixedly connected to the inner side surface of the above-mentioned first arc-shaped hoop plate, and the above-mentioned second elastic pad is fixedly connected to the inner side surface of the above-mentioned second arc-shaped hoop plate, and the above-mentioned first elastic pad and the above-mentioned second elastic pad are symmetrically distributed with each other.

[0022] In this manner, the first elastic pad and the second elastic pad can increase the friction of the first arc hoop plate and the second arc hoop plate on the cylindrical tank body or the docking flange surface, thereby preventing the first arc hoop plate and the second arc hoop plate from rotating and displacing on the cylindrical tank body or the docking flange surface, thereby ensuring that the positioning sealing head always presses against the leakage point.

[0023] Optionally, a through hole is provided on the horizontal section, the positioning sealing head can slide through the through hole, and the outer wall of the positioning sealing head and the inner wall of the through hole are slidably and sealedly connected to each other.

[0024] With such arrangement, the arrangement of the through hole facilitates the upward and downward movement of the positioning sealing head.

[0025] Optionally, the positioning sealing head has a conical head, and one end of the conical head close to the through hole has an annular column, and the annular column is slidably and sealingly connected in the through hole.

[0026] With such an arrangement, the conical head is convenient for sealing gas leaks on the cylindrical tank body or the docking flange surface. The arrangement of the annular column enables the conical head to slide and fit within the through hole. Due to the structural principle of the annular column, the annular column is convenient for achieving a slidable sealing connection to the through hole.

[0027] Optionally: a guide hole is provided on the axis of the annular column, a positioning clamping head is vertically fixedly connected to the top surface of the sealed cabin corresponding to the guide hole, the positioning clamping head is coaxial with the guide hole, and the annular column can be slidably mounted on the positioning clamping head through the guide hole.

[0028] With such arrangement, the positioning clamping head has a guiding function. When the annular column moves up and down, the positioning clamping head is placed into the guide hole at one end close to the annular column, so that the annular column will not be displaced when it moves.

[0029] Optionally, a cantilever pipe is fixedly connected to one side of the sealed cabin, the cantilever pipe and the sealed cabin are interconnected, and the pressure sensor is connected to the cantilever pipe.

[0030] Such an arrangement makes it easier for the pressure sensor to monitor the air pressure inside the sealed cabin in real time.

[0031] Optionally, a signal transmission line is provided between the pressure sensor and the pressure display device, and two ends of the signal transmission line are electrically connected to the pressure sensor and the pressure display device, respectively.

[0032] With such an arrangement, the signal transmission line can transmit the data collected by the pressure sensor to the pressure display device for display, making it easier for staff to read the air pressure value inside the sealed cabin, and further facilitating the staff to record the air pressure data inside the sealed cabin in real time.

[0033] In summary, the utility model discloses a GIS equipment SF6 gas leakage pressure plugging device with the advantages of simple operation, fast plugging, convenient plugging of harmful gases, high plugging efficiency, the ability to plug leaks in online equipment, avoid equipment shutdown and achieve the beneficial effects of plugging without changing the original equipment structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a schematic structural diagram of a GIS equipment SF6 gas leakage pressure sealing device in an embodiment of the present utility model.

[0036] Icon: 1-G-type clamp, 2-opening, 3-bolt group, 4-horizontal section, 5-positioning sealing head, 6-sealing chamber, 7-pressure sensor, 8-pressure display device, 9-first arc hoop plate, 10-second arc hoop plate, 11-first wing plate, 12-second wing plate, 13-screw, 14-first screw sleeve, 15-second screw sleeve, 16-nut, 17-first elastic pad, 18-second elastic pad, 19-through hole, 20-conical head, 21-annular column, 22-guide hole, 23-positioning clamping head, 24-cantilever pipe, 25-signal transmission line. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0039] Example

[0040] See also Figure 1, This embodiment proposes a GIS equipment SF6 gas leakage pressure sealing device, including a G-type clamp 1;

[0041] The G-type clamp 1 has an opening 2, a bolt group 3 is provided at the opening 2, and the bolt group 3 is bolted to the opening 2;

[0042] A horizontal section 4 is provided on the side of the G-type clamp 1 away from the opening 2. A positioning sealing head 5 is provided in the vertical direction of the horizontal section 4. An end of the positioning sealing head 5 close to the horizontal section 4 can slide through the horizontal section 4. The positioning sealing head 5 and the horizontal section 4 are slidably and sealingly connected to each other.

[0043] A sealed cabin 6 is provided on the outside of the horizontal section 4. The sealed cabin 6 is fixedly connected to the outside of the horizontal section 4. The end of the positioning sealing head 5 close to the sealed cabin 6 is located inside the sealed cabin 6.

[0044] The outer wall of the sealed cabin 6 has an air inlet (not shown in the figure) and an exhaust port (not shown in the figure). The sealed cabin 6 is connected to a pressure sensor 7, and the pressure sensor 7 is connected to a pressure display device 8.

[0045] When in use, first, clamp the G-type clamp 1 at the leakage point of the leaking pipe, so that the bottom end of the positioning sealing head 5 is against the leakage point. Secondly, tighten the G-type clamp 1 through the bolt group 3, so that the spacing between the openings 2 becomes smaller and smaller, and the positioning sealing head 5 on the horizontal section 4 moves toward the inside of the sealing cabin 6 under the squeezing action of the leaking pipe. The more the positioning sealing head 5 enters the sealing cabin 6, the greater the internal air pressure of the sealing cabin 6. The air pressure inside the sealing cabin 6 presses the positioning sealing head 5 in the opposite direction, so that the positioning sealing head 5 no longer continues to move toward the inside of the sealing cavity, and then the lower end of the positioning sealing head 5 is tightly against the leakage point to achieve a plugging seal. The pressure sensor 7 monitors the air pressure inside the sealing cabin 6 in real time and displays it through the electrically connected pressure display device 8, which is convenient for the staff to watch and record.

[0046] The present embodiment discloses a GIS equipment SF6 gas leakage pressure plugging device. By closing the G-type clamp 1, the air pressure inside the sealing cabin 6 presses the positioning sealing head 5, and the positioning sealing head 5 tightly seals the leakage point, thereby realizing a rapid pressure plugging function. As a result, the GIS equipment SF6 gas leakage pressure plugging device has the advantages of simple operation, rapid plugging, convenience in plugging harmful gases, high plugging efficiency, ability to plug leaks in online equipment, avoid equipment shutdown, and achieve the beneficial effects of plugging without changing the original equipment structure.

[0047] See also Figure 1 The G-type clamp 1 has a first arc-shaped hoop plate 9 and a second arc-shaped hoop plate 10, and the same ends of the first arc-shaped hoop plate 9 and the second arc-shaped hoop plate 10 are respectively fixedly connected to the two ends of the horizontal section 4;

[0048] The other ends of the first arc hoop plate 9 and the second arc hoop plate 10 correspond to each other, and the opening 2 is located between the other ends of the first arc hoop plate 9 and the second arc hoop plate 10. The mutual cooperation between the first arc hoop plate 9 and the second arc hoop plate 10 makes it easy for the sealing device to tighten the hoop to the cylindrical tank body or the docking flange surface for pressure-fixed sealing, thereby ensuring the stability of the sealing.

[0049] The other ends of the first curved hoop plate 9 and the second curved hoop plate 10 respectively have a first wing plate 11 and a second wing plate 12. The first wing plate 11 and the second wing plate 12 are parallel to each other and spaced apart. The bolt group 3 is fixedly and detachably connected to the first wing plate 11 and the second wing plate 12. The arrangement of the first wing plate 11 and the second wing plate 12 facilitates the staff to tighten the first curved hoop plate 9 and the second curved hoop plate 10 through the bolt group 3, thereby realizing that the sealing device is tightly fixed on the cylindrical tank body or the docking flange surface.

[0050] See also Figure 1 The bolt group 3 has a screw 13, and the first wing plate 11 and the second wing plate 12 respectively have a coaxial first screw sleeve 14 and a second screw sleeve 15. The screw 13 is threadedly connected to the first screw sleeve 14 and the second screw sleeve 15 in sequence. A nut 16 is provided on one end of the screw 13. The nut 16 can drive the screw 13 to rotate. By rotating the screw 13 on the first screw sleeve 14 and the second screw sleeve 15, the first screw sleeve 14 and the second screw sleeve 15 move closer to each other and drive the first wing plate 11 and the second wing plate 12 to move closer to each other, thereby making the first arc hoop plate 9 and the second arc hoop plate 10 clamped more tightly on the cylindrical tank body or the docking flange surface, which is conducive to improving the sealing effect.

[0051] The inner sides of the first arc hoop plate 9 and the second arc hoop plate 10 are respectively provided with a first elastic pad 17 and a second elastic pad 18. The first elastic pad 17 is fixedly connected to the inner side surface of the first arc hoop plate 9, and the second elastic pad 18 is fixedly connected to the inner side surface of the second arc hoop plate 10. The first elastic pad 17 and the second elastic pad 18 are symmetrically distributed with each other. The first elastic pad 17 and the second elastic pad 18 can increase the friction force of the first arc hoop plate 9 and the second arc hoop plate 10 on the cylindrical tank body or the docking flange surface, thereby avoiding the first arc hoop plate 9 and the second arc hoop plate 10 from rotating and displacing on the cylindrical tank body or the docking flange surface, ensuring that the positioning sealing head 5 always presses against the leakage point.

[0052] In this embodiment, when the positioning sealing head 5 is set at an inclined angle or a horizontal angle, the first elastic pad 17 and the second elastic pad 18 can prevent the positioning sealing head 5 from being displaced, thereby improving the stability of the connection of the sealing device.

[0053] See also Figure 1A through hole 19 is provided on the horizontal section 4, and the positioning sealing head 5 can slide through the through hole 19, and the outer wall of the positioning sealing head 5 and the inner wall of the through hole 19 are slidingly and sealingly connected to each other. The setting of the through hole 19 facilitates the up and down movement of the positioning sealing head 5.

[0054] The positioning sealing head 5 has a conical head 20, and the end of the conical head 20 close to the through hole 19 has an annular column 21. The annular column 21 is slidably sealed and connected in the through hole 19. The conical head 20 is convenient for sealing gas leaks on the cylindrical tank body or the docking flange surface. The setting of the annular column 21 enables the conical head 20 to slide and fit in the through hole 19. Due to the structural principle of the annular column 21, the annular column 21 is convenient for achieving a slidable sealing connection to the through hole 19.

[0055] A guide hole 22 is provided on the axis of the annular column 21, and a positioning clamping head 23 is vertically fixedly connected to the top surface of the sealed cabin 6 corresponding to the guide hole 22. The positioning clamping head 23 is coaxial with the guide hole 22. The annular column 21 can be slidably mounted on the positioning clamping head 23 through the guide hole 22. The positioning clamping head 23 has a guiding function. When the annular column 21 moves up and down, the positioning clamping head 23 is placed in the guide hole 22 at one end close to the annular column 21, so that the annular column 21 will not be displaced when it moves.

[0056] A cantilever pipe 24 is fixedly connected to one side of the sealed cabin 6 , and the cantilever pipe 24 and the sealed cabin 6 are interconnected. The pressure sensor 7 is connected to the cantilever pipe 24 , so that the pressure sensor 7 can monitor the air pressure inside the sealed cabin 6 in real time.

[0057] There is a signal transmission line 25 between the pressure sensor 7 and the pressure display device 8. The two ends of the signal transmission line 25 are electrically connected to the pressure sensor 7 and the pressure display device 8 respectively. The signal transmission line 25 can transmit the data collected by the pressure sensor 7 to the pressure display device 8 for display, so that the staff can read the air pressure value inside the sealed cabin 6, and then the staff can record the air pressure data inside the sealed cabin 6 in real time.

[0058] See also Figure 1 In this embodiment, the G-type clamp 1 is the main body joint of the equipment. Through the G-type clamp 1, a relatively large pressure can be applied to the entire equipment to ensure the sealing of the entire equipment, which can reach 1.0-3.0 MPa. The positioning sealing head 5 is a sealing head made of stainless steel. The positioning sealing head 5 itself can withstand a pressure of 10 MPa. The positioning clamping head can ensure that the equipment pressure is as vertically downward as possible. The pressure sensor 7 and the pressure display device 8 monitor the pressure applied to the positioning sealing head 5 at any time to observe the equipment support status.

[0059] See also Figure 1In this embodiment, the first arc-shaped hoop plate 9 and the second arc-shaped hoop plate 10 are clamped with each other, and the positioning sealing head 5 will be squeezed outward by the leaking pipe. When the positioning sealing head 5 is squeezed toward the sealing cabin 6, the air pressure inside the sealing cabin 6 will be increased. The enhanced air pressure in turn applies pressure to the positioning sealing head 5, so that the positioning sealing head 5 is tightly pressed against the leak, thereby achieving pressure sealing.

[0060] See also Figure 1 In this embodiment, the gas inside the sealed cabin 6 can be controlled through the air inlet (not shown in the figure) and the exhaust port. When the pressure display device 8 shows that the pressure inside the sealed cabin 6 is low, high-pressure gas can be injected through the air inlet. When the pressure display device 8 shows that the pressure inside the sealed cabin 6 is high, a part of the high-pressure gas can be discharged through the exhaust port, so that the air pressure value inside the sealed cabin 6 meets the requirements.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A GIS equipment SF6 gas leakage pressure sealing device, characterized by: Including G-type clamp (1); The G-type clamp (1) has an opening (2), a bolt group (3) is provided at the opening (2), and the bolt group (3) is bolted to the opening (2); The G-type clamp (1) is provided with a horizontal section (4) on one side away from the opening (2), and a positioning sealing head (5) is provided in the vertical direction of the horizontal section (4). The positioning sealing head (5) is slidably passed through the horizontal section (4) at one end close to the horizontal section (4), and the positioning sealing head (5) and the horizontal section (4) are slidably and sealedly connected to each other; A sealed cabin (6) is provided on the outside of the horizontal section (4), the sealed cabin (6) is fixedly connected to the outside of the horizontal section (4), and one end of the positioning sealing head (5) close to the sealed cabin (6) is located inside the sealed cabin (6); The outer wall of the sealed cabin (6) has an air inlet and an air outlet. The sealed cabin (6) is connected to a pressure sensor (7), and the pressure sensor (7) is connected to a pressure display device (8).

2. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 1, characterized in that: The G-type clamp (1) comprises a first arc-shaped hoop plate (9) and a second arc-shaped hoop plate (10), wherein the same end of the first arc-shaped hoop plate (9) and the second arc-shaped hoop plate (10) are respectively fixedly connected to the two ends of the horizontal section (4); The other ends of the first arc-shaped hoop plate (9) and the second arc-shaped hoop plate (10) correspond to each other, and the opening (2) is located between the other ends of the first arc-shaped hoop plate (9) and the second arc-shaped hoop plate (10).

3. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 2, characterized in that: The other ends of the first arc-shaped hoop plate (9) and the second arc-shaped hoop plate (10) are respectively provided with a first wing plate (11) and a second wing plate (12); the first wing plate (11) and the second wing plate (12) are parallel to each other and spaced apart; the bolt group (3) is fixedly and detachably connected to the first wing plate (11) and the second wing plate (12).

4. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 3, characterized in that: The bolt group (3) comprises a screw rod (13), the first wing plate (11) and the second wing plate (12) respectively comprise a coaxial first screw sleeve (14) and a second screw sleeve (15), the screw rod (13) is threadedly connected to the first screw sleeve (14) and the second screw sleeve (15) in sequence, and a nut (16) is provided on one end of the screw rod (13).

5. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 2, characterized in that: A first elastic pad (17) and a second elastic pad (18) are respectively provided on the inner sides of the first arc-shaped hoop plate (9) and the second arc-shaped hoop plate (10), wherein the first elastic pad (17) is fixedly connected to the inner side surface of the first arc-shaped hoop plate (9), and the second elastic pad (18) is fixedly connected to the inner side surface of the second arc-shaped hoop plate (10), and the first elastic pad (17) and the second elastic pad (18) are symmetrically distributed with respect to each other.

6. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 1, characterized in that: A through hole (19) is provided on the horizontal section (4), and the positioning sealing head (5) can slide through the through hole (19), and the outer wall of the positioning sealing head (5) and the inner wall of the through hole (19) are slidably and sealedly connected to each other.

7. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 6, characterized in that: The positioning sealing head (5) has a conical head (20), and one end of the conical head (20) close to the through hole (19) has an annular column (21). The annular column (21) is slidably and sealingly connected in the through hole (19).

8. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 7, characterized in that: The annular column (21) has a guide hole (22) on its axis, and a positioning clamping head (23) is vertically fixedly connected to the inner top surface of the sealed cabin (6) corresponding to the guide hole (22). The positioning clamping head (23) is coaxial with the guide hole (22), and the annular column (21) can be slidably sleeved on the positioning clamping head (23) through the guide hole (22).

9. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 1, characterized in that: A cantilever pipe (24) is fixedly connected to one side of the sealed cabin (6), the cantilever pipe (24) and the sealed cabin (6) are interconnected, and the pressure sensor (7) is connected to the cantilever pipe (24).

10. The GIS equipment SF6 gas leakage under pressure sealing device according to claim 9, characterized in that: A signal transmission line (25) is provided between the pressure sensor (7) and the pressure display device (8), and two ends of the signal transmission line (25) are electrically connected to the pressure sensor (7) and the pressure display device (8), respectively.

Images