Portable GIS gas chamber leaked gas collecting device

Abstract

The invention relates to the technical field of leaked gas collection, in particular to a portable GIS gas chamber leaked gas collection device which comprises a shell which comprises a connecting shaft, connecting ribs symmetrically and fixedly connected to the two sides of the connecting shaft, an upper shell fixedly connected to the upper portions of the connecting ribs, and a lower shell fixedly connected to the lower portions of the connecting ribs. The device comprises an upper shell and a lower shell, sealing assemblies are arranged on the two sides of the upper shell and the two sides of the lower shell, a deflation port is formed in the top of the upper shell, a detection meter is arranged on the top of the deflation port, and an inflation valve is arranged at the bottom of the lower shell. Meanwhile, a special sampling gas vent is arranged, so that a detection meter can be easily connected and collect a gas sample, the change of an air pressure value is monitored in real time, the detection accuracy and efficiency are improved, the device can be conveniently disassembled through the design of a connecting shaft, an upper shell and a lower shell, and wider applicability is realized.

Description

Technical Field

[0001] The invention relates to the technical field of air leakage collection, in particular to a portable GIS air chamber air leakage collection device. Background Art

[0002] The main types of GIS leakage defects include cracks, sand holes, bolt seams, glue injection holes, flange or pot-type insulator joint surfaces, etc. For various defects, the main methods for calculating the annual leakage rate at present include the buckle cover method, local bandaging method, pressure drop method and hanging bottle method. The cover-closing method is to place the gas chamber in a closed plastic cover or metal cover. After a certain period of time (generally 24 hours), the gas concentration in the cover is measured with an SF6 quantitative leak detector. The annual leakage rate Fy is calculated based on the known cover volume, cover-closing time, SF6 density at normal temperature and pressure (20°C, one standard atmospheric pressure) and the total mass of SF6 in the gas chamber. This method is complicated to operate, time-consuming and inefficient. The local bandaging method is to use a plastic film to locally bandage the leaking part into a certain geometric shape (as round or square as possible to facilitate volume estimation). After a certain period of time (generally 24 hours), the gas concentration in the bandaging cavity is measured with an SF6 quantitative leak detector. The annual leakage rate Fy is calculated based on the estimated bandaging cavity volume, known bandaging time, SF6 density at normal temperature and pressure and the total mass of SF6 in the gas chamber. Calculate the annual leakage rate Fy. This method has large errors and is time-consuming. The pressure drop method is to first measure the SF6 gas pressure data before the pressure drop and convert it into the pressure P1 at room temperature and pressure. After a long time interval (3 to 6 months), measure the SF6 gas pressure data after the pressure drop and convert it into the pressure P2 at room temperature and pressure. The leakage rate is calculated based on the pressure change of the SF6 gas chamber within a certain time interval. This method has too low measurement efficiency. The hanging bottle method is to connect the leakage point and the hanging bottle with a soft rubber tube. After a certain period of time (generally 24 hours), use an SF6 quantitative leak detector to measure the gas concentration in the hanging bottle. According to the known hanging bottle volume, hanging bottle time, SF6 density at room temperature and pressure, and the total mass of SF6 in the gas chamber, the annual leakage rate Fy is calculated. This method takes a long time to measure and is not efficient.

[0003] This invention aims to develop a portable GIS air chamber leakage collection device to solve the limitations of existing leak detection methods. Through the research and development of this project, we will provide a more convenient and accurate leakage detection method for the operation and maintenance of GIS equipment, effectively improving the reliability and safety of the equipment, while reducing maintenance costs and manpower investment. Summary of the invention

[0004] In view of the above problems or problems existing in the prior art, the present invention is proposed.

[0005] Therefore, an object of the present invention is to provide a portable GIS air chamber leakage collection device.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a portable GIS air chamber leakage collection device, comprising:

[0007] A shell, comprising a connecting shaft, and connecting ribs symmetrically fixedly connected on both sides of the connecting shaft, an upper shell fixedly connected above the connecting ribs, and a lower shell fixedly connected below the connecting ribs, sealing components are provided on both sides of the upper shell and the lower shell, a venting port is provided at the top of the upper shell, a detection gauge is provided at the top of the venting port, and an inflation valve is provided at the bottom of the lower shell;

[0008] A fastening mechanism, comprising an upper fixing plate and a lower fixing plate symmetrical to the upper fixing plate, a locking assembly is arranged between the upper fixing plate and the lower fixing plate, a fixing block is arranged on the outer side of the upper shell, and a limiting assembly is arranged at the bottom of the fixing block;

[0009] The upper fixing plate is fixedly connected to one end of the upper shell away from the connecting shaft, and the lower fixing plate is fixedly connected to one end of the lower shell away from the connecting shaft.

[0010] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the upper shell and the lower shell are both semicircular rings of the same size.

[0011] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the sealing assembly includes an upper sealing ring, which is fixedly connected to both sides of the upper shell, and lower sealing rings are fixedly and symmetrically connected to both sides of the lower shell.

[0012] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the upper sealing ring and the lower sealing ring are arranged concentrically with the upper shell and the lower shell and have the same curvature.

[0013] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the locking assembly includes a hinge seat, which is fixedly connected to the bottom surface of the lower fixed plate, a rotating shaft is rotatably connected inside the hinge seat, a connecting rod is fixedly connected to the middle of the rotating shaft, a cross plate is fixedly connected to the top of the connecting rod, and a hand-held plate is fixedly connected to the surface of the cross plate.

[0014] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the middle part of the connecting rod is provided with a thread, and the outer periphery of the connecting rod is rotatably connected with a nut.

[0015] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, a rubber pad is arranged on the outer periphery of the connecting rod and on the surface of the upper fixing plate.

[0016] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the limiting assembly includes a sliding rod, which is slidably connected inside a fixed block, a sliding seat is fixedly connected to the bottom of the sliding rod, a spring is fixedly connected to the top of the sliding seat, and the top of the spring is fixedly connected to the bottom of the fixed block.

[0017] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, a top plate is fixedly connected to the top of the sliding rod and located on the surface of the fixed block.

[0018] As a preferred solution of the portable GIS air chamber leakage collection device of the present invention, the side surface of the sliding seat is slidably connected to the surface of the upper shell.

[0019] The beneficial effects of the portable GIS air chamber leakage collection device of the present invention are as follows: the device is designed with a connecting shaft and replaceable upper and lower sealing rings, which can adapt to GIS pipeline flange interfaces of different calibers and materials, are easy to disassemble and suitable for flange diameters of different specifications, ensure sealing performance, and at the same time, a detection meter is connected to the top to assist in leakage detection by monitoring changes in air pressure values, and whether there is a leakage source can be intuitively determined, thereby improving the accuracy and efficiency of detection. A special sampling vent port is provided, which is convenient for connecting to gas analysis equipment for collection and analysis. At the same time, the vent port is connected to the detection meter to achieve seamless connection of information transmission, effectively improving the reliability and safety of the equipment, while reducing maintenance costs and manpower investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0021] Figure 1 This is a schematic diagram of the overall structure of a portable GIS air chamber leakage collection device.

[0022] Figure 2 This is a schematic diagram of the side structure of a portable GIS air chamber leakage collection device.

[0023] Figure 3 A portable GIS air chamber leakage collection device Figure 1 Schematic diagram of the enlarged structure of part A in the middle.

[0024] In the figure: 100, shell; 101, connecting shaft; 102, connecting rib; 103, upper shell; 104, lower shell; 105, sealing assembly; 105a, upper sealing ring; 105b, lower sealing ring; 106, venting port; 107, test gauge; 108, inflation valve; 200, fastening mechanism; 201, upper fixing plate; 202, lower fixing plate; 203, locking assembly; 203a, hinge seat; 203b, rotating shaft; 203c, connecting rod; 203d, horizontal plate; 203e, hand-held plate; 203f, nut; 203g, rubber pad; 204, fixing block; 205, limit assembly; 205a, slide rod; 205b, spring; 205c, top plate; 205d, slide seat. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Example 1, reference Figure 1 to Figure 3 , which is the first embodiment of the present invention, provides a portable GIS air chamber leakage collection device, comprising:

[0029] The shell 100 includes a connecting shaft 101, and connecting ribs 102 symmetrically fixedly connected on both sides of the connecting shaft 101, an upper shell 103 fixedly connected above the connecting ribs 102, and a lower shell 104 fixedly connected below the connecting ribs 102. Sealing components 105 are arranged on both sides of the upper shell 103 and the lower shell 104. A vent 106 is arranged on the top of the upper shell 103, and a detection gauge 107 is arranged on the top of the vent 106. The vent 106 is used to collect leaked gas. The detection gauge 107 is a pressure detector, which is used to detect the pressure change inside the shell 100, so as to judge the leakage situation inside the shell 100. An inflation valve 108 is arranged at the bottom of the lower shell 104. The inflation valve 108 is used to quickly flush sulfur hexafluoride gas into the interior of the device. When there is a leak in the pipeline, a certain amount of sulfur hexafluoride gas can be filled in through the inflation valve 108 to balance the pressure in the pipeline and slow down the leakage rate of sulfur hexafluoride.

[0030] The fastening mechanism 200 includes an upper fixing plate 201 and a lower fixing plate 202 symmetrical to the upper fixing plate 201, a locking assembly 203 is arranged between the upper fixing plate 201 and the lower fixing plate 202, a fixing block 204 is arranged on the outer side of the upper shell 103, and a limiting assembly 205 is arranged on the bottom of the fixing block 204. The upper fixing plate 201 and the lower fixing plate 202 are the same in size and shape, and have notches of the same size in the middle of the outer sides.

[0031] The upper fixing plate 201 is fixedly connected to one end of the upper shell 103 away from the connecting shaft 101, and the lower fixing plate 202 is fixedly connected to one end of the lower shell 104 away from the connecting shaft 101. The upper fixing plate 201 and the lower fixing plate 202 can fit tightly.

[0032] Specifically, the upper shell 103 and the lower shell 104 are both semicircular rings of the same size, and the outer wall of the pipeline is fitted and clamped by the upper shell 103 and the lower shell 104.

[0033] Furthermore, the sealing assembly 105 includes an upper sealing ring 105a, which is fixedly connected to both sides of the upper shell 103, and lower sealing rings 105b are fixedly and symmetrically connected to both sides of the lower shell 104. The upper sealing ring 105a and the lower sealing ring 105b are cocentrically arranged with the upper shell 103 and the lower shell 104 and have the same curvature. The upper sealing ring 105a and the lower sealing ring 105b can be made of rubber material, which can better fit the outer wall of the pipeline and prevent gas leakage.

[0034] After testing, the device can withstand a gas leakage pressure of 0.65MPa and has a certain safety margin and pressure resistance, which is crucial for preventing gas leakage and ensuring operational safety, ensuring that pipelines and devices can operate safely under specific pressure.

[0035] Before installing the device, it is necessary to first determine the diameter size of the pipeline to be tested, and then select the upper sealing ring 105a and the lower sealing ring 105b of appropriate size according to the diameter size of the pipeline to be tested and install them on the upper shell 103 and the lower shell 104. In the process of the upper shell 103 and the lower shell 104 being fitted with the pipeline to be tested, the upper sealing ring 105a and the lower sealing ring 105b are also synchronously driven to fit with the pipeline. The upper sealing ring 105a and the lower sealing ring 105b seal the pipeline. At this time, the pressure data is observed through the detection meter 107. When the pressure is abnormal, it can be determined that the pipeline is leaking. At this time, the staff opens the vent 106 on the top of the upper shell 103 to collect and process the leaked gas. If the vent 106 and the detection meter 107 are connected by circuit, seamless docking of information transmission can be achieved, which effectively improves the reliability and safety of the equipment.

[0036] Example 2, reference Figure 1 to Figure 3 , which is the second embodiment of the present invention. Different from the previous embodiment, the locking assembly 203 includes a hinge seat 203a, the hinge seat 203a is fixedly connected to the bottom surface of the lower fixed plate 202, the hinge seat 203a is rotatably connected to a rotating shaft 203b inside, the middle of the rotating shaft 203b is fixedly connected to a connecting rod 203c, the top of the connecting rod 203c is fixedly connected to a horizontal plate 203d, and the surface of the horizontal plate 203d is fixedly connected to a hand-held plate 203e.

[0037] Specifically, a thread is provided in the middle of the connecting rod 203c, and a nut 203f is rotatably connected to the outer periphery of the connecting rod 203c.

[0038] Furthermore, a rubber pad 203g is provided on the outer periphery of the connecting rod 203c and on the surface of the upper fixing plate 201 .

[0039] The rest of the structure is the same as that of Example 1.

[0040] In this embodiment, the staff holds the hand-held plate 203e to drive the connecting rod 203c to rotate with the rotating shaft 203b as the center, so that the horizontal plate 203d can be flipped from the position of the lower fixed plate 202 to the surface of the upper fixed plate 201, and then the nut 203f located on the outer periphery of the connecting rod 203c is rotated. At the same time, the rubber pad 203g is attached to the upper fixed plate 201, so that the upper fixed plate 201 and the lower fixed plate 202 are tightly fitted, and the upper shell 103 and the lower shell 104, the upper sealing ring 105a and the lower sealing ring 105b are tightly fitted to the pipeline to be tested to prevent air leakage.

[0041] Example 3, reference Figure 1 to Figure 3, which is the third embodiment of the present invention. Different from the previous embodiment, it also includes a limiting component 205 including a sliding rod 205a, the sliding rod 205a is slidably connected to the inside of the fixed block 204, the bottom of the sliding rod 205a is fixedly connected to a sliding seat 205d, the top of the sliding seat 205d is fixedly connected to a spring 205b, and the top of the spring 205b is fixedly connected to the bottom of the fixed block 204.

[0042] Specifically, a top plate 205c is fixedly connected to the top of the sliding rod 205a and located on the surface of the fixing block 204 .

[0043] Furthermore, the side surface of the slide seat 205d is slidably connected to the surface of the upper shell 103.

[0044] The rest of the structure is the same as that of Example 2.

[0045] In the initial state, when the spring 205b is not under force, the slide seat 205d slides to a position close to the fixed block 204 due to the elastic force of the spring 205b, driving the slide rod 205a to slide upward inside the fixed block 204, thereby making the top plate 205c move away from the fixed block 204.

[0046] When in use, the staff first holds the hand-held plate 203e, so that the horizontal plate 203d is located below the hinge seat 203a, and separates the upper shell 103 and the lower shell 104 by rotating the connecting shaft 101, and then selects the upper sealing ring 105a and the lower sealing ring 105b that are suitable according to the size of the pipe diameter, and fixes the upper sealing ring 105a and the lower sealing ring 105b of appropriate size on both sides of the upper shell 103 and the lower shell 104. The diameter size of the upper sealing ring 105a and the lower sealing ring 105b is smaller than the diameter size of the upper shell 103 and the lower shell 104, and the upper sealing ring 105a and the lower sealing ring 105b can be used to seal the pipe to be tested;

[0047] Then the upper shell 103 and the lower shell 104 are placed close to the pipeline to be tested, and the staff holds the handheld plate 203e and rotates it with the rotating shaft 203b as the center of the circle, so that the horizontal plate 203d is located on the surface of the upper fixed plate 201. At the same time, during the rotation of the horizontal plate 203d, the horizontal plate 203d contacts the slide 205d. During the rotation of the horizontal plate 203d to be parallel to the upper fixed plate 201, the slide 205d is received by the horizontal plate 203d on the outside of the upper shell 103 and squeezed downward. The pressure force causes the slide bar 205a to slide downward, driving the slide bar 205a to slide inside the fixed block 204. At this time, the spring 205b is in a stretched state, and the horizontal plate 203d is parallel to the upper fixed plate 201. At this time, the bottom surface of the slide seat 205d below the horizontal plate 203d contacts the upper fixed plate 201, and the slide seat 205d applies a tight fitting force between the upper fixed plate 201 and the lower fixed plate 202, so that the connection between the upper shell 103 and the lower shell 104 is tighter.

[0048] When the height of the slide 205d is equal to the distance between the bottom surface of the horizontal plate 203d and the top surface of the upper fixed plate 201 when the upper fixed plate 201 and the lower fixed plate 202 are tightly fitted, the nut 203f can be rotated to a fixed position on the thread of the outer wall of the connecting rod 203c and locked through the limiting of the slide 205d, making the operation of the staff more precise.

[0049] In summary, the key to the device is that it can flexibly adjust the upper sealing ring 105a and the lower sealing ring 105b, which can not only adapt to pipes of different calibers, but also adapt to GIS pipe flange interfaces of various materials. At the same time, it is equipped with a special sampling and venting port 106, so that the detection meter 107 can be easily connected and collect gas samples, and monitor the changes in air pressure values ​​in real time, thereby assisting in detecting the source of leakage and improving the accuracy and efficiency of detection. The design of the connecting shaft 101, the upper shell 103 and the lower shell 104 makes the device easy to disassemble and suitable for flange pipe diameters of different specifications, solving the problem of poor adaptability of traditional leak detection methods to GIS pipe flange interfaces of different calibers and materials, and achieving a wider range of applicability. Then, the sampling and venting port 106 and the detection meter 107 are integrated to improve the detection efficiency and accuracy. At the same time, it is easy to disassemble and assemble, which is convenient for users to switch between flange pipe diameters of different specifications.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A portable GIS air chamber leakage collection device, characterized in that: include, A shell (100) comprises a connecting shaft (101), and connecting ribs (102) symmetrically fixedly connected on both sides of the connecting shaft (101), an upper shell (103) fixedly connected above the connecting rib (102), and a lower shell (104) fixedly connected below the connecting rib (102), sealing components (105) being arranged on both sides of the upper shell (103) and the lower shell (104), a venting port (106) being arranged at the top of the upper shell (103), a detection gauge (107) being arranged at the top of the venting port (106), and an inflation valve (108) being arranged at the bottom of the lower shell (104); A fastening mechanism (200), comprising an upper fixing plate (201) and a lower fixing plate (202) symmetrical to the upper fixing plate (201), a locking assembly (203) being arranged between the upper fixing plate (201) and the lower fixing plate (202), a fixing block (204) being arranged on the outer side of the upper shell (103), and a limiting assembly (205) being arranged at the bottom of the fixing block (204); The upper fixing plate (201) is fixedly connected to one end of the upper shell (103) away from the connecting shaft (101), and the lower fixing plate (202) is fixedly connected to one end of the lower shell (104) away from the connecting shaft (101).

2. The portable GIS air chamber leakage collection device according to claim 1, characterized in that: The upper shell (103) and the lower shell (104) are both semicircular rings of the same size.

3. The portable GIS air chamber leakage collection device according to claim 2, characterized in that: The sealing assembly (105) comprises an upper sealing ring (105a), wherein the upper sealing ring (105a) is fixedly connected to two sides of the upper shell (103), and lower sealing rings (105b) are fixedly and symmetrically connected to two sides of the lower shell (104).

4. The portable GIS air chamber leakage collection device according to claim 3, characterized in that: The upper sealing ring (105a) and the lower sealing ring (105b) are arranged cocentrically with the upper shell (103) and the lower shell (104) and have the same arc.

5. The portable GIS air chamber leakage collection device according to claim 4, characterized in that: The locking assembly (203) comprises a hinge seat (203a), wherein the hinge seat (203a) is fixedly connected to the bottom surface of the lower fixed plate (202), a rotating shaft (203b) is rotatably connected inside the hinge seat (203a), a connecting rod (203c) is fixedly connected to the middle of the rotating shaft (203b), a cross plate (203d) is fixedly connected to the top of the connecting rod (203c), and a hand-held plate (203e) is fixedly connected to the surface of the cross plate (203d).

6. The portable GIS air chamber leakage collection device according to claim 5, characterized in that: A thread is provided in the middle of the connecting rod (203c), and a nut (203f) is rotatably connected to the outer periphery of the connecting rod (203c).

7. The portable GIS air chamber leakage collection device according to claim 6, characterized in that: A rubber pad (203g) is provided on the outer periphery of the connecting rod (203c) and on the surface of the upper fixing plate (201).

8. The portable GIS air chamber leakage collection device according to claim 7, characterized in that: The limiting assembly (205) comprises a sliding rod (205a), the sliding rod (205a) is slidably connected inside the fixed block (204), the bottom of the sliding rod (205a) is fixedly connected to a sliding seat (205d), the top of the sliding seat (205d) is fixedly connected to a spring (205b), and the top of the spring (205b) is fixedly connected to the bottom of the fixed block (204).

9. The portable GIS air chamber leakage collection device according to claim 8, characterized in that: A top plate (205c) is fixedly connected to the top of the sliding rod (205a) and located on the surface of the fixing block (204).

10. The portable GIS air chamber leakage collection device according to claim 9, characterized in that: The side surface of the sliding seat (205d) is slidably connected to the surface of the upper shell (103).

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