Power plant gas leak detection device

Abstract

The application relates to the technical field of gas detection, in particular to a power plant gas leakage detection device which comprises a sealing cover wrapped around the connecting position of two adjacent pipelines, a pull rope is slidably arranged at the top of the sealing cover in the vertical direction, the lower end of the pull rope extends into the sealing cover and is provided with a first air bag located at the upper portion of the sealing cover, the upper end of the pull rope extends out of the sealing cover and is provided with a second air bag, the first air bag and the second air bag can float in air and sink in gas; the upper surface of the second air bag surrounds a concave cavity, a light reflection column is arranged in the concave cavity and connected to the sealing cover; when the first air bag and the second air bag both float in air, the light reflection column sinks into the concave cavity; when the first air bag sinks in gas, the first air bag pulls the second air bag to sink through the pull rope, and the light reflection column is separated from the concave cavity. The application can improve the detection efficiency of gas leakage and enable workers to know the gas leakage situation in time.

Description

Technical Field

[0001] This application relates to the technical field of gas detection, and in particular to a gas leak detection device for power plants. Background Technology

[0002] Natural gas, the fuel for power plants, is usually transported through underground pipelines. In order to minimize safety hazards at power plants, it is necessary to regularly detect gas leaks at the connection points of adjacent pipelines.

[0003] A search revealed Chinese Patent Publication No. CN212617672U, which discloses a natural gas pipeline leak detection device for a natural gas power plant. The device includes two pipelines, each with a flange at one end. The two pipelines are fixedly connected by the flange, and each pipeline has a cap fitted onto its outer side. The caps are parallel to each other and are positioned on one side of the flange. One side of each cap is bolted to the flange, and a retaining ring is fitted onto the outer side of each cap. This invention, by setting caps and retaining rings at the connection point of the two pipelines, effectively prevents further diffusion of leaked natural gas, improving the safety of gas transportation in natural gas power plants. During pipeline leak detection, operators only need to push a lever downwards to bring the detection probe into contact with the gas in the enclosed space, thus improving detection sensitivity.

[0004] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: workers need to walk to the pipe connection point and then push the lever down to allow the detection probe to detect the gas leak, resulting in low detection efficiency; at the same time, the detector may be damaged or lose power during prolonged use, preventing workers from promptly notifying them of the gas leak. Therefore, improvements are needed. Summary of the Invention

[0005] In order to improve the efficiency of gas leak detection and enable workers to be informed of gas leaks in a timely manner, this application provides a gas leak detection device for power plants.

[0006] The power plant gas leak detection device provided in this application adopts the following technical solution: The power plant gas leak detection device includes a sealing cover wrapped around the connection of two adjacent pipes. A pull rope is slidably threaded through the top of the sealing cover in the vertical direction. The lower end of the pull rope extends into the sealing cover and is provided with a first airbag located at the top of the sealing cover. The upper end of the pull rope extends out of the sealing cover and is provided with a second airbag. Both the first airbag and the second airbag can float in the air and sink in the gas.

[0007] The upper surface of the second airbag forms a concave cavity, and a reflective column is installed inside the concave cavity. The reflective column is connected to the sealing cover.

[0008] When both the first and second airbags are floating in the air, the reflector will sink into the concave cavity; when the first airbag sinks in the fuel gas, the first airbag will pull the second airbag down through the pull rope, and the reflector will detach from the concave cavity.

[0009] Optionally, the upper surface of the second airbag is spherical and coated with a reflective layer. When the second airbag sinks, the center of the sphere on the upper surface of the second airbag will be located on the reflective column.

[0010] Optionally, the second airbag is equipped with a balloon, and the sealing cover is equipped with a spike located directly below the balloon, so that the balloon will be punctured by the spike when it sinks with the second airbag.

[0011] Optionally, the second airbag is provided with a shell, the bottom of which has an opening for a piercing needle, and the balloon is located inside the shell.

[0012] Optionally, the balloon is located within a concave cavity and is made of a transparent material, and the balloon is filled with fluorescent powder.

[0013] Optionally, the balloons are provided on the second airbag at multiple heights, and the spikes are provided on the sealing cover at multiple heights at the same top.

[0014] Optionally, the interior of the reflective column is hollow, and a connecting rope is provided on the reflective column and slides vertically through the sealing cover. The lower end of the connecting rope extends into the sealing cover and is provided with a third airbag. The third airbag is located below the first airbag, and a limiting block is provided inside the sealing cover to prevent the third airbag from rising.

[0015] Both the reflective column and the third airbag can float in the air. The reflective column in the air will pull the third airbag against the limiting block through the connecting rope. When the bottom balloon is punctured, the first airbag and the third airbag are set at intervals. During the process of the second balloon being punctured from bottom to top, the first airbag will push the third airbag to descend.

[0016] Optionally, the sealing cover includes an upper cover and a lower cover that are clamped together on the pipe. Each of the upper and lower covers has a magnetic sheet and a sealing sheet at one opposite end. The two magnetic sheets can be attracted and fixed to each other, and the two sealing sheets can jointly seal the gap between the upper and lower covers and the gap between the sealing cover and the pipe.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] 1. The upper and lower magnetic plates can attract and fix each other, so that the upper and lower covers are stably clamped in the pipe. The upper and lower sealing plates can jointly seal the gap between the upper and lower covers and the gap between the sealing cover and the pipe, so that the gas leaking from the pipe connection is not easy to drift into the air.

[0019] 2. When gas leaks, the gas will enter the sealed cover through the pipe connection. The first airbag will sink in the gas and the second airbag will sink by pulling the rope. The reflector will detach from the cavity. At this time, the worker can directly observe the light reflected by the reflector, so that the worker can detect the gas leak in time and improve the gas detection efficiency.

[0020] 3. When a gas leak causes the second gas bladder to sink, the balloon will sink along with it, and the spikes will puncture the balloon, causing it to burst and thus promptly alerting workers to the gas leak.

[0021] 4. After the balloon bursts, the fluorescent powder inside the balloon will float out and fall onto the upper surface of the second airbag. The reflective layer will reflect the fluorescence of the fluorescent powder onto the reflective column, allowing workers to detect gas leaks in time even in poor lighting conditions. Attached Figure Description

[0022] Figure 1 This is a schematic cross-sectional view of the overall structure in the embodiments of this application;

[0023] Figure 2 This is a schematic diagram of the structure of the sealing cover in the embodiments of this application;

[0024] Figure 3 This is a cross-sectional view of the upper part of the sealing cover in an embodiment of this application.

[0025] Reference numerals: 1. Pipe; 2. Sealing cover; 21. Upper cover; 22. Lower cover; 23. Magnetic sheet; 24. Sealing sheet; 25. Spike; 26. Limiting block; 3. First airbag; 31. Pull rope; 4. Second airbag; 41. Cavity; 42. Reflective layer; 43. Shell; 44. Balloon; 45. Fluorescent powder; 5. Reflective column; 51. Connecting rope; 6. Third airbag. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0027] This application discloses a gas leak detection device for power plants. For example... Figures 1 to 3 As shown, the power plant gas leak detection device includes a sealing cover 2 that wraps around the connection between two adjacent pipes 1. The sealing cover 2 includes an upper cover 21 and a lower cover 22 arranged vertically, and both the upper cover 21 and the lower cover 22 are arranged in a semi-circular shape.

[0028] Magnetic plates 23 and sealing plates 24 are installed at opposite ends of the upper cover 21 and the lower cover 22. The magnetic plates 23 form a ring, and the upper and lower magnetic plates 23 can attract and fix each other, so that the upper cover 21 and the lower cover 22 are stably clamped on the pipe 1, ensuring the stability of the sealing cover 2 on the pipe 1 and realizing the quick installation of the sealing cover 2 on the pipe 1. The sealing plate 24 forms a ring and is located inside the magnetic plates 23. The upper and lower sealing plates 24 can jointly seal the gap between the upper cover 21 and the lower cover 22 and the gap between the sealing cover 2 and the pipe 1, so that the gas leaking from the connection of the pipe 1 is not easily dispersed into the air.

[0029] A pull rope 31 is slidably threaded through the top of the sealing cover 2 in a vertical direction. In this embodiment, there are four pull ropes 31. The lower ends of the four pull ropes 31 extend into the sealing cover 2 and are connected to the same first airbag 3. The first airbag 3 is located at the upper part of the sealing cover 2. The upper ends of the four pull ropes 31 extend out of the sealing cover 2 and are connected to the same second airbag 4. The upper surface of the second airbag 4 forms a cavity 41. A reflective column 5 is provided in the cavity 41 and is connected to the sealing cover 2.

[0030] When there is no gas leak, the first airbag 3 will float inside the sealing cover 2 and abut against the top inner wall of the sealing cover 2, the second airbag 4 will float in the outside air, and the reflector 5 will sink into the cavity 41, making it impossible for workers to observe the light reflected by the reflector 5.

[0031] When a gas leak occurs, the gas will enter the sealing cover 2 through the connection of pipe 1. Since the density of gas is less than that of air, the gas will float in the upper part of the sealing cover 2. The first airbag 3 will sink in the gas and pull the second airbag 4 down by the pull rope 31. The reflective column 5 will detach from the concave cavity 41. At this time, the worker can directly observe the light reflected by the reflective column 5, so that the worker can detect the gas leak in time and improve the gas detection efficiency.

[0032] The upper surface of the second airbag 4 is spherical and coated with a reflective layer 42. When the second airbag 4 sinks, the center of the sphere on the upper surface of the second airbag 4 will be located on the reflective column 5. The light that shines on the reflective layer 42 will be reflected onto the reflective column 5, making it easier for workers to notice the reflective column 5 that has detached from the cavity 41.

[0033] The top of the sealing cover 2 is equipped with multiple spikes 25, which slide vertically through the second airbag 4, allowing the second airbag 4 to move only in a vertical direction. The second airbag 4 has balloons 44 corresponding to the spikes 25, positioned directly above them. When the second airbag 4 descends, the balloons 44 descend with it, and the spikes 25 puncture the balloons 44, causing them to pop and alert workers of a gas leak.

[0034] The upper surface of the second airbag 4 is equipped with multiple shells 43. The bottom of each shell 43 has an opening for the spikes 25 to penetrate. Each shell 43 corresponds to a balloon 44, and the balloon 44 is located inside the shell 43. The tip of the spike 25 can penetrate into the shell 43 and puncture the balloon 44. The popping sound produced by the balloon 44 will be reflected inside the shell 43, thereby increasing the sound of the popping sound so that workers can notice the gas leak in time.

[0035] The multiple balloons 44 are at different heights, while the tops of the multiple spikes 25 are at the same height. As the gas leak increases, the first airbag 3 and the second airbag 4 will gradually descend, and the multiple balloons 44 will burst in sequence, creating intermittent bursting sounds, thus preventing workers from missing the gas leak due to brief absence from their posts.

[0036] The balloon 44 is located inside the cavity 41 and is made of transparent material. The balloon 44 is filled with fluorescent powder 45. Under good lighting conditions, the fluorescent powder 45 can absorb and store light. After the balloon 44 bursts, the fluorescent powder 45 inside the balloon 44 will float out. The inner wall of the shell 43 will block the fluorescent powder 45. The fluorescent powder 45 will pass through the bottom opening of the shell 43 and fall onto the upper surface of the second airbag 4. The reflective layer 42 will reflect the fluorescence of the fluorescent powder 45 onto the reflective column 5, so that workers can detect gas leaks in time even in poor lighting conditions.

[0037] The interior of the reflective column 5 is hollow. A connecting rope 51 is installed at the bottom of the reflective column 5, which slides vertically through the second airbag 4, the sealing cover 2 and the first airbag 3. The lower end of the connecting rope 51 extends into the sealing cover 2 and is fitted with a third airbag 6. The third airbag 6 is located below the first airbag 3. A limiting block 26 is installed inside the sealing cover 2 to prevent the third airbag 6 from rising.

[0038] When there is no gas leak, the reflective column 5 will float in the outside air, and the third airbag 6 will float inside the sealing cover 2 and abut against the lower surface of the limiting block 26. When the lowest balloon 44 is punctured, the reflective column 5 and the third airbag 6 will remain stationary, allowing the reflective column 5 to detach from the cavity 41. The first airbag 3 and the third airbag 6 are spaced apart. During the process of puncturing the second balloon 44 from bottom to top, the first airbag 3 will push the third airbag 6 to descend, and the third airbag 6 will pull the reflective column 5 to descend through the connecting rope 51. That is, the reflective column 5 will descend synchronously with the second airbag 4, so that the light reflected by the reflective layer 42 can always shine on the reflective column 5, so that workers can notice the gas leak in time.

[0039] It is worth noting that, since the reflective column 5 can descend synchronously with the second airbag 4, the reflective column 5 extending in the vertical direction can have a smaller length, and the second airbag 4 used to shield the reflective column 5 can also have a smaller height.

[0040] The implementation principle of the gas leak detection device for power plants in this application embodiment is as follows: When gas leaks, the gas will enter the sealing cover 2 through the connection of the pipe 1. The first airbag 3 will sink in the gas and pull the second airbag 4 to sink through the pull rope 31. The reflective column 5 will detach from the cavity 41, and the spike 25 will puncture the balloons 44 one by one. The balloons 44 will produce a popping sound and throw fluorescent powder 45 into the reflective layer 42. The fluorescence emitted by the fluorescent powder 45 will be reflected by the reflective layer 42 onto the reflective column 5, making the reflective column 5 emit light. The popping sound of the balloons 44 and the light of the reflective column 5 will jointly remind the workers of the gas leak, eliminating the need for workers to conduct additional detection, thereby improving the detection efficiency of gas leaks. In addition, this application does not require the use of a detector or an external power supply, and has a low failure rate, enabling workers to be aware of gas leaks in a timely manner.

[0041] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A gas leak detection device for power plants, characterized in that: Includes a sealing cover (2) wrapped around the connection of two adjacent pipes (1), the top of the sealing cover (2) is slidably threaded with a pull rope (31) in the vertical direction, the lower end of the pull rope (31) extends into the sealing cover (2) and is provided with a first airbag (3) located on the upper part of the sealing cover (2), the upper end of the pull rope (31) extends out of the sealing cover (2) and is provided with a second airbag (4), the first airbag (3) and the second airbag (4) can both float in the air and sink in the gas; The upper surface of the second airbag (4) forms a concave cavity (41), and a reflective column (5) is provided inside the concave cavity (41). The reflective column (5) is connected to the sealing cover (2). When the first airbag (3) and the second airbag (4) both float in the air, the reflective column (5) will sink into the concave cavity (41); when the first airbag (3) sinks in the gas, the first airbag (3) will pull the second airbag (4) down through the pull rope (31), and the reflective column (5) will detach from the concave cavity (41). The upper surface of the second airbag (4) is spherical and coated with a reflective layer (42). When the second airbag (4) sinks, the center of the sphere on the upper surface of the second airbag (4) will be located on the reflective column (5). The second airbag (4) is equipped with a balloon (44), and the sealing cover (2) is equipped with a spike (25) located directly below the balloon (44). The balloon (44) will be punctured by the spike (25) when it sinks with the second airbag (4). The second airbag (4) is provided with a shell (43), and the bottom of the shell (43) is provided with an opening for the spike (25) to pass through. The balloon (44) is located inside the shell (43). The balloon (44) is located inside the cavity (41) and is made of transparent material, and the balloon (44) is filled with fluorescent powder (45). The balloon (44) has multiple spikes (25) on the second airbag (4) at different heights, and the spikes (25) have multiple spikes (25) on the sealing cover (2) at the same top height. The interior of the reflective column (5) is hollow. A connecting rope (51) is provided on the reflective column (5) and slides vertically through the sealing cover (2). The lower end of the connecting rope (51) extends into the sealing cover (2) and is provided with a third airbag (6). The third airbag (6) is located below the first airbag (3). A limiting block (26) is provided inside the sealing cover (2) to prevent the third airbag (6) from rising. Both the reflective column (5) and the third airbag (6) can float in the air. The reflective column (5) in the air will pull the third airbag (6) against the limiting block (26) through the connecting rope (51). When the lowest balloon (44) is punctured, the first airbag (3) and the third airbag (6) are set at intervals. During the process of the second balloon (44) being punctured from bottom to top, the first airbag (3) will push the third airbag (6) down.

2. The power plant gas leak detection device according to claim 1, characterized in that: The sealing cover (2) includes an upper cover (21) and a lower cover (22) that are clamped together in the pipe (1). The upper cover (21) and the lower cover (22) are provided with magnetic plates (23) and sealing plates (24) at opposite ends. The two magnetic plates (23) can be attracted and fixed to each other, and the two sealing plates (24) can jointly seal the gap between the upper cover (21) and the lower cover (22) and the gap between the sealing cover (2) and the pipe (1).

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