Natural gas leak detection device

Abstract

The present invention relates to the field of natural gas leak detection, specifically a natural gas leak detection device, which includes two semicircular sleeves, wherein a sealing assembly is provided on the inner walls of the two semicircular sleeves, a fixing assembly is provided on the sealing assembly, a locking assembly is provided on the outer wall of the sealing assembly, and an exhaust assembly is provided on the outer wall of the semicircular sleeve. The sealing assembly includes a gas detector, and the gas detector is fixedly connected to the outer wall of one of the semicircular sleeves. Four semicircular sealing rings are clamped in four annular grooves, and then four arc rings are clamped in the four annular grooves. Finally, the two semicircular sleeves are sleeved on both ends of the flange of the pipeline, and then the arc plate is inserted into the corresponding arc clamping groove. Rotating the arc clamping groove drives the arc plate to slide in the arc opening, and then the arc plate drives the arc ring to rotate, so that the arc ring blocks the connection between the four semicircular sealing rings, thereby forming a complete seal for the two semicircular sleeves, which is convenient for replacement and maintenance.

Description

Technical Field

[0001] The present invention relates to the field of natural gas leakage detection, in particular to a natural gas leakage detection device. Background Art

[0002] Natural gas refers to a mixture of hydrocarbons and non-hydrocarbon gases naturally stored in the earth. In petroleum geology, it usually refers to oilfield gas and gasfield gas, which is mainly composed of hydrocarbons and contains non-hydrocarbon gases. Natural gas leakage can cause fires, and when the content in the air reaches a certain level, it can cause people to experience symptoms of hypoxia. When natural gas accumulates in closed environments such as houses and reaches a certain proportion, it can easily trigger a powerful explosion.

[0003] Existing natural gas needs to be transported through pipelines when in use, but the joints of the pipelines are often prone to leakage. When the natural gas in the pipeline leaks, it will cause safety hazards. The existing natural gas leak detection device is installed on the connecting flange of the pipeline, but it needs to be sleeved on the flange before the pipeline is installed. When the leak detection device is damaged, it is inconvenient to repair and replace it. In addition, the existing leak detection device does not have a pressure relief function. When the internal pressure of the leak detection device is high, it is easy to cause the leak detection device to be damaged, and eventually it will cause natural gas leakage. Summary of the Invention

[0004] In view of the problems in the prior art, the present invention provides a natural gas leak detection device.

[0005] The technical solution adopted by the present invention to solve the technical problem is: a natural gas leak detection device includes two semicircular sleeves, the inner walls of the two semicircular sleeves are provided with sealing components, the sealing components are provided with a fixing component, the outer walls of the sealing components are provided with a locking component, and the outer walls of the semicircular sleeves are provided with an exhaust component;

[0006] The sealing assembly includes a gas detector, which is fixedly connected to the outer wall of one of the semicircular sleeves. Semicircular rings are fixedly connected to the inner walls of both ends of the two semicircular sleeves. Ring grooves are provided on the inner walls of the four semicircular rings. Semicircular sealing rings are clamped inside the four ring grooves. Arc rings are clamped inside the four ring grooves. Arc plates are fixedly connected to the side walls of the four arc rings. The four arc plates are clamped on the inner walls of four arc openings. The four arc openings are opened on the outer walls of the four semicircular rings. The other ends of the four arc plates are respectively inserted into four arc clamping grooves. The four arc clamping grooves are opened on the surfaces of the two rotating rings.

[0007] Specifically, the fixing assembly includes four fixing blocks, which are respectively fixedly connected to the outer walls at both ends of the two semicircular sleeves. The four fixing blocks are rotatably connected to a rotating shaft, and the four rotating shafts are fixedly connected to a U-shaped plate. The inner walls of the four U-shaped plates are clamped on the inner walls of the four arc grooves, and the four arc grooves are opened on the surface of the four fixing bars.

[0008] Specifically, the locking assembly includes a fixing column, four of the fixing columns are fixedly connected to the outer walls of the four semicircular rings, the four fixing columns are clamped on the inner walls of the two clamping rings, and the outer walls of both ends of the two clamping rings are fixedly connected with connecting blocks, and the four connecting blocks are provided with threaded holes, and the inside of the four threaded holes are threadedly connected with bolts, and the four bolts are inserted into the inside of four sockets, and the four sockets are provided on the outer walls of the two rotating rings.

[0009] Specifically, the exhaust assembly includes an air pipe, which is fixedly connected to the outer wall of the lower end of a semicircular sleeve. The other end of the air pipe is fixedly connected to a strip tube, which is fixedly connected to the outer wall of the semicircular sleeve. A piston is movably sleeved on the inner wall of the strip tube, one end of the piston is fixedly connected to a push rod, a trigger is movably sleeved inside the strip tube, and a through hole is opened at one end of the strip tube.

[0010] Specifically, the inner wall of the semicircular sealing ring corresponds to the inner wall of the arc ring.

[0011] Specifically, the four fixing bars are fixedly connected to the outer walls of the two rotating rings.

[0012] Specifically, both ends of the clamping ring are provided with grooves that are clamped with the fixing columns.

[0013] Specifically, the through hole is provided at an end of the strip tube away from the gas transmission pipe.

[0014] Beneficial effects of the present invention:

[0015] (1) The natural gas leak detection device described in the present invention is constructed by clamping four semicircular sealing rings into four ring grooves, then clamping four arc rings into the four ring grooves, and finally sleeve-fitting two semicircular sleeves onto the two ends of the flange of the pipeline. Then, the arc plate is inserted into the corresponding arc clamping groove, and the arc plate is driven to slide inside the arc opening by rotating the arc clamping groove, and then the arc ring is driven to rotate by the arc plate, so that the arc ring blocks the connection between the four semicircular sealing rings, thereby forming a complete seal between the two semicircular sleeves, which is convenient for replacement and maintenance.

[0016] (2) The natural gas leak detection device described in the present invention is a device that inputs the gas into the strip tube through the gas pipe, and the pressure of the natural gas pushes the piston to move, so that the piston pushes the push rod to move. After the push rod moves, it hits the trigger, and the trigger sends an alarm signal to remind people of natural gas leakage. At the same time, the pressure in the semicircular sleeve is relieved through the strip tube by the moving piston and trigger, so as to prevent the leak detection device from being damaged and leaking due to excessive pressure. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The present invention will be further described below with reference to the accompanying drawings and examples.

[0018] Figure 1 A schematic structural diagram of the natural gas leak detection device provided by the present invention;

[0019] Figure 2 A side structural diagram of the natural gas leak detection device provided by the present invention;

[0020] Figure 3 A BB-axis cross-sectional view of the natural gas leak detection device provided by the present invention;

[0021] Figure 4 A schematic diagram of the semicircular structure of the natural gas leak detection device provided by the present invention;

[0022] Figure 5 The natural gas leak detection device provided by the present invention Figure 1 Enlarged view of part A;

[0023] Figure 6 A semicircular cross-sectional view of the natural gas leak detection device provided by the present invention;

[0024] Figure 7 This is a schematic diagram of the swivel structure of the natural gas leak detection device provided by the present invention.

[0025] In the figure: 1. semicircular sleeve; 2. sealing assembly; 21. gas detector; 22. semicircular ring; 23. ring groove; 24. semicircular sealing ring; 25. arc ring; 26. arc plate; 27. arc opening; 28. swivel; 29. ​​arc slot; 3. fixing assembly; 31. fixing block; 32. rotating shaft; 33. U-shaped plate; 34. fixing strip; 35. arc slot; 4. locking assembly; 41. fixing column; 42. snap ring; 43. connecting block; 44. threaded hole; 45. bolt; 46. jack; 5. exhaust assembly; 51. gas pipe; 52. strip pipe; 53. piston; 54. push rod; 55. trigger; 56. through hole. DETAILED DESCRIPTION

[0026] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0027] like Figure 1-Figure 7 As shown, the natural gas leak detection device of the present invention includes two semicircular sleeves 1, the inner walls of the two semicircular sleeves 1 are provided with sealing components 2, the sealing components 2 are provided with fixing components 3, the outer walls of the sealing components 2 are provided with locking components 4, and the outer walls of the semicircular sleeves 1 are provided with exhaust components 5;

[0028] The sealing assembly 2 includes a gas detector 21, which is fixedly connected to the outer wall of one of the semicircular sleeves 1. Semicircular rings 22 are fixedly connected to the inner walls of both ends of the two semicircular sleeves 1. Ring grooves 23 are provided on the inner walls of the four semicircular rings 22. Semicircular sealing rings 24 are clamped inside the four ring grooves 23. Arc rings 25 are clamped inside the four ring grooves 23. Arc plates 26 are fixedly connected to the side walls of the four arc rings 25. The four arc plates 26 are clamped on the inner walls of the four arc openings 27. The arc-shaped openings 27 are provided on the outer walls of the four semicircular rings 22. The other ends of the four arc plates 26 are respectively inserted into the four arc slots 29. The four arc slots 29 are provided on the surfaces of the two swivel rings 28. The two semicircular sleeves 1 are sleeved on both ends of the flange of the pipeline, and then the arc plates 26 are inserted into the corresponding arc slots 29. The arc slots 29 are rotated to drive the arc plates 26 to slide inside the arc-shaped openings 27, and then the arc plates 26 are driven to rotate the arc ring 25 through the arc plate 26, so that the arc ring 25 blocks the connection of the four semicircular sealing rings 24.

[0029] Specifically, the fixing assembly 3 includes four fixing blocks 31, which are respectively fixedly connected to the outer walls at both ends of the two semicircular sleeves 1. The four fixing blocks 31 are rotatably connected to the rotating shafts 32, and the four rotating shafts 32 are fixedly connected to the U-shaped plates 33. The inner walls of the four U-shaped plates 33 are clamped on the inner walls of the four arc grooves 35. The four arc grooves 35 are opened on the surfaces of the four fixing bars 34. The four U-shaped plates 33 are rotated so that the inner walls of the U-shaped plates 33 are clamped in the arc grooves 35 on the four fixing bars 34. In this way, the fixing bars 34 can be fixed to the fixing blocks 31, thereby fixing the position of the arc ring 25.

[0030] Specifically, the locking assembly 4 includes a fixing column 41, and the four fixing columns 41 are fixedly connected to the outer walls of the four semicircular rings 22. The four fixing columns 41 are clamped on the inner walls of the two clamping rings 42. The outer walls of both ends of the two clamping rings 42 are fixedly connected with connecting blocks 43. The four connecting blocks 43 are provided with threaded holes 44. The interiors of the four threaded holes 44 are threadedly connected with bolts 45. The four bolts 45 are inserted into the interiors of four sockets 46. The four sockets 46 are provided on the outer walls of the two rotating rings 28. The two ends of the clamping ring 42 are clamped in the corresponding fixing columns 41. The two symmetrical semicircular rings 22 are clamped and fixed to each other through the clamping ring 42, so that the semicircular sealing rings 24 in the two semicircular rings 22 can be stably sealed.

[0031] Specifically, the exhaust assembly 5 includes a gas pipe 51, which is fixedly connected to the outer wall of the lower end of a semicircular sleeve 1. The other end of the gas pipe 51 is fixedly connected to a strip pipe 52, which is fixedly connected to the outer wall of the semicircular sleeve 1. A piston 53 is movably sleeved on the inner wall of the strip pipe 52, and one end of the piston 53 is fixedly connected to a push rod 54. A trigger 55 is movably sleeved inside the strip pipe 52. A through hole 56 is provided at one end of the strip pipe 52. When natural gas leaks from the flange of the pipeline, natural gas will be input into the strip pipe 52 through the gas pipe 51, and the pressure of the natural gas will push the piston 53 to move, so that the piston 53 pushes the push rod 54 to move. After the push rod 54 moves, it hits the trigger 55, and the trigger 55 sends an alarm signal to remind people of natural gas leakage. At the same time, the pressure in the semicircular sleeve 1 is relieved through the strip pipe 52 through the moving piston 53 and trigger 55, preventing the leak detection device from being damaged and leaking due to excessive pressure.

[0032] Specifically, the inner wall of the semicircular sealing ring 24 corresponds to the inner wall of the arc ring 25 , so that the arc ring 25 can block the gap at the connection of the semicircular sealing ring 24 .

[0033] Specifically, four fixing bars 34 are fixedly connected to the outer walls of the two swivels 28 , and the swivels 28 can be fixed by the fixing bars 34 .

[0034] Specifically, both ends of the clamping ring 42 are provided with grooves that are mutually clamped with the fixing column 41 , so that the clamping ring 42 is stably clamped on the surface of the fixing column 41 .

[0035] Specifically, the through hole 56 is provided at one end of the strip tube 52 away from the gas delivery pipe 51 , so that the gas in the strip tube 52 is discharged through the through hole 56 .

[0036] When in use, first clamp the four semicircular sealing rings 24 into the four annular grooves 23, then clamp the four arc rings 25 into the four annular grooves 23, and finally sleeve the two semicircular sleeves 1 onto the two ends of the flange of the pipe, and then insert the arc plate 26 into the corresponding arc clamping groove 29, rotate the arc clamping groove 29 to drive the arc plate 26 to slide inside the arc opening 27, and then drive the arc ring 25 to rotate through the arc plate 26, so that the arc ring 25 blocks the connection of the four semicircular sealing rings 24, and then rotate the four U-shaped plates 33 to make the inner wall of the U-shaped plate 33 clamped into the arc groove 35 on the four fixing bars 34, so that the fixing bars 34 can be fixed correspondingly to the fixing blocks 31, thereby fixing the position of the arc ring 25, and then Then, the two ends of the clamping ring 42 are clamped in the corresponding fixing columns 41, and the two symmetrical semicircular rings 22 are clamped and fixed to each other through the clamping ring 42, so that the semicircular sealing rings 24 in the two semicircular rings 22 can stably seal each other. When natural gas leaks from the flange of the pipeline, natural gas will be input into the strip tube 52 through the gas pipeline 51, and the piston 53 is pushed to move by the pressure of the natural gas, so that the piston 53 pushes the push rod 54 to move. After the push rod 54 moves, it hits the trigger 55, and the trigger 55 sends an alarm signal to remind of the natural gas leakage. At the same time, the pressure in the semicircular sleeve 1 is relieved through the strip tube 52 through the moving piston 53 and the trigger 55, so as to prevent the leak detection device from being damaged and leaking due to excessive pressure.

[0037] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A natural gas leak detection device, comprising two semicircular sleeves (1), wherein a sealing assembly (2) is provided on the inner wall of the two semicircular sleeves (1), a fixing assembly (3) is provided on the sealing assembly (2), a locking assembly (4) is provided on the outer wall of the sealing assembly (2), and an exhaust assembly (5) is provided on the outer wall of the semicircular sleeves (1); Its characteristics are: The sealing assembly (2) includes a gas detector (21), the gas detector (21) is fixedly connected to the outer wall of one of the semicircular sleeves (1), the inner walls of both ends of the two semicircular sleeves (1) are fixedly connected with semicircular rings (22), the inner walls of the four semicircular rings (22) are provided with annular grooves (23), the interiors of the four annular grooves (23) are clamped with semicircular sealing rings (24), the interiors of the four annular grooves (23) are clamped with arc rings (25), the side walls of the four arc rings (25) are fixedly connected with arc plates (26), the four arc plates (26) are clamped on the inner walls of four arc openings (27), the four arc openings (27) are opened on the outer walls of the four semicircular rings (22), the other ends of the four arc plates (26) are respectively inserted into four arc clamping grooves (29), and the four arc clamping grooves (29) are opened on the surfaces of two rotating rings (28); The fixing assembly (3) includes four fixing blocks (31), the four fixing blocks (31) are fixedly connected to the outer walls of both ends of the two semicircular sleeves (1), the four fixing blocks (31) are rotatably connected to a rotating shaft (32), the four rotating shafts (32) are fixedly connected to a U-shaped plate (33), the inner walls of the four U-shaped plates (33) are clamped on the inner walls of four arc grooves (35), and the four arc grooves (35) are opened on the surfaces of four fixing bars (34); The locking assembly (4) includes a fixing column (41), four of the fixing columns (41) are fixedly connected to the outer walls of four semicircular rings (22), the four fixing columns (41) are clamped on the inner walls of two clamping rings (42), and connecting blocks (43) are fixedly connected to the outer walls of both ends of the two clamping rings (42), and the four connecting blocks (43) are each provided with a threaded hole (44), and the inside of the four threaded holes (44) are each threadedly connected with a bolt (45), and the four bolts (45) are inserted into the inside of four jacks (46), and the four jacks (46) are provided on the outer walls of the two rotating rings (28); The inner wall of the semicircular sealing ring (24) corresponds to the inner wall of the arc ring (25); The four fixing bars (34) are fixedly connected to the outer walls of the two rotating rings (28); Both ends of the clamping ring (42) are provided with grooves for clamping with the fixing column (41).

2. The natural gas leak detection device according to claim 1, characterized in that: The exhaust assembly (5) includes an air delivery pipe (51), the air delivery pipe (51) is fixedly connected to the outer wall of the lower end of a semicircular sleeve (1), the other end of the air delivery pipe (51) is fixedly connected to a strip pipe (52), the strip pipe (52) is fixedly connected to the outer wall of the semicircular sleeve (1), a piston (53) is movably sleeved on the inner wall of the strip pipe (52), one end of the piston (53) is fixedly connected to a push rod (54), the interior of the strip pipe (52) is movably sleeved with a trigger (55), and one end of the strip pipe (52) is provided with a through hole (56).

3. The natural gas leak detection device according to claim 2, characterized in that: The through hole (56) is provided at one end of the strip tube (52) away from the gas transmission tube (51).

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