Natural gas leakage detection equipment

Abstract

The invention is applicable to the technical field of natural gas detection, and provides natural gas leakage detection equipment, which comprises an anti-leakage pipeline, the outer side of a natural gas pipeline is sleeved with the anti-leakage pipeline, the anti-leakage pipeline is provided with a hole groove corresponding to a valve switch, and the anti-leakage pipeline is fixed through a mounting assembly; the one-way driving absorption assembly is connected with the anti-leakage pipeline and generates driving force based on the pressure of the natural gas; the alarm assembly is connected with the one-way driving absorption assembly and is started based on the pushing force of the one-way driving absorption assembly; the main closing assembly is connected with the one-way driving absorption assembly and is started based on the pushing force of the one-way driving absorption assembly, and the valve switch is rotated to close the valve. The one-way driving absorption assembly is arranged to be connected with the anti-leakage pipeline, when leakage occurs, an alarm can be given in time, the valve switch can be rotated, the valve is closed, continuous leakage is eradicated, leaked natural gas can be absorbed, and potential safety hazards are eradicated.

Description

Technical Field

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

[0002] Natural gas is one of the safer fuels. Using natural gas as an energy source can reduce the use of coal and oil and greatly improve environmental pollution problems. As a clean energy source, it can reduce sulfur dioxide and dust emissions by nearly 100%, carbon dioxide emissions by 60% and nitrogen oxide emissions by 50%, and help reduce acid rain formation and improve environmental quality.

[0003] Natural gas leaks usually occur at the joints of valves and pipelines. Since natural gas is lighter than air, once it leaks, it will spread upward and be difficult to detect. However, once the leaked natural gas mixes with air to a certain proportion, it will cause an explosion when it encounters a fire source, causing casualties and property losses.

[0004] Most of the natural gas leak detectors in the existing technology use sensors to make judgments by monitoring the concentration of natural gas in the environment. Handheld instruments are required to perform detection at the connection point. In addition, they can only perform detection and alarm functions, and their functions are relatively simple. Summary of the Invention

[0005] The purpose of the embodiments of the present invention is to provide a natural gas leakage detection device, aiming to solve the problems raised in the above background technology.

[0006] The embodiment of the present invention is implemented as follows: a natural gas leak detection device, the detection device comprising:

[0007] A leak-proof pipe is sleeved on the outside of the natural gas pipeline, and is provided with holes and slots corresponding to the valve switch. The connection portions of the leak-proof pipe with the natural gas pipeline and the valve switch are sealed, and the leak-proof pipe is fixed by a mounting assembly;

[0008] a one-way driven absorption component connected to the leak-proof pipeline and generating a driving force based on the pressure of the natural gas;

[0009] an alarm component connected to the one-way drive absorption component and activated based on the driving force of the one-way drive absorption component;

[0010] The main closing component is connected to the one-way driving absorption component, and is activated based on the driving force of the one-way driving absorption component to rotate the valve switch to close the valve.

[0011] Preferably, the one-way drive absorption component comprises:

[0012] an air outlet pipe, connected to the anti-leakage pipe;

[0013] An absorption pipe, the absorption pipe is connected to the air outlet pipe through a connecting pipe, and the connecting pipe is a truncated cone structure;

[0014] A tympanic membrane is installed in the air outlet pipe and the connecting pipe, and a sealing ring is provided on the outer wall of the tympanic membrane to contact the inner wall of the connecting pipe for achieving sealing;

[0015] A piston is installed in the eardrum, and a piston rod is provided on the piston, and the other end of the piston rod passes through the absorption tube and is located outside;

[0016] A mounting ring plate is fixedly mounted in the absorber tube, an elastic member is mounted between the mounting ring plate and the piston, and the elastic member is sleeved on the outer side of the piston rod;

[0017] The absorption chamber is located in the chamber formed by the mounting ring plate and the connecting pipe. The absorption chamber is filled with natural gas adsorbent to absorb leaked natural gas.

[0018] Preferably, the mounting assembly comprises:

[0019] A mounting plate connected to the anti-leakage pipe;

[0020] The mounting suction cup is mounted on the mounting plate and is used for connecting with the mounting surface.

[0021] Preferably, the alarm component includes:

[0022] Mounting seat 1, the mounting seat 1 is mounted on the mounting plate;

[0023] An alarm is mounted on the first mounting base. The alarm corresponds to the piston rod. When the piston rod is pushed and moved, the alarm is activated to sound an alarm.

[0024] Preferably, the main switch assembly includes:

[0025] a one-way control assembly connected to the piston rod and generating a one-way driving force based on the movement of the piston rod;

[0026] The conversion transmission component is connected between the one-way control component and the valve switch, and is used to drive the valve switch to rotate and close the valve.

[0027] Preferably, the one-way control component includes:

[0028] Connecting member 1 is connected to the piston rod, and the connecting member 1 is connected to connecting member 3 through connecting member 2;

[0029] A one-way inclined plane driving member is connected to the connecting member 3, wherein the driving surface of the one-way inclined plane driving member is an inclined plane structure;

[0030] The inclined surface extrusion block is limitedly installed on the second mounting seat, and the second mounting seat is installed on the mounting plate. The piston rod drives the one-way inclined surface driving member to move, generates an extrusion force on the inclined surface extrusion block, and drives the inclined surface extrusion block to move in a limited direction.

[0031] Preferably, a limiting groove is provided on the second mounting seat, and a limiting block is provided on the inclined surface extrusion block and is slidably installed in the limiting groove to limit the moving trajectory of the inclined surface extrusion block.

[0032] Preferably, the conversion transmission assembly includes:

[0033] a rack connected to the inclined surface extrusion block;

[0034] A gear is mounted on one side of the rack and continuously meshes with the rack. The gear is connected to the rotating wheel 1 via a connecting rod. The rotating wheel 1 is rotatably mounted on the anti-leakage pipe via a mounting rod.

[0035] The second rotating wheel is installed on the outside of the valve switch. A transmission belt is sleeved between the first rotating wheel and the second rotating wheel to drive the valve switch to rotate.

[0036] A natural gas leak detection device provided by an embodiment of the present invention addresses the problems in the prior art. It is provided with a one-way driven absorption component connected to a leak-proof pipeline. The leak-proof pipeline is arranged on the outside of the natural gas pipeline to seal the connection part. If a leak occurs in the connection part, the natural gas will gather in the leak-proof pipeline and rise into the one-way driven absorption component. On the one hand, it generates a driving force to drive the alarm component and the main closing component to open, which can not only alarm in time, but also rotate the valve switch to close the valve to prevent further leakage. On the other hand, it can also absorb the leaked natural gas to eliminate safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A three-dimensional structural diagram of a natural gas leak detection device provided by an embodiment of the present invention;

[0038] Figure 2 A front view of a natural gas leak detection device provided by an embodiment of the present invention;

[0039] Figure 3 A side view of a natural gas leak detection device provided by an embodiment of the present invention;

[0040] Figure 4 for Figure 2 Schematic diagram of a local enlarged structure;

[0041] Figure 5 A schematic structural diagram of a natural gas one-way driven absorption component in a natural gas leak detection device provided by an embodiment of the present invention.

[0042] In the attached figure: 1. natural gas pipeline; 2. valve switch; 3. mounting plate; 4. anti-leakage pipeline; 5. exhaust pipe; 6. absorption pipe; 7. connecting pipe; 8. eardrum; 9. sealing ring; 10. piston; 11. piston rod; 12. mounting ring plate; 13. absorption chamber; 14. elastic member; 15. mounting seat 1; 16. alarm; 17. connecting member 1; 18. connecting member 2; 19. connecting member 3; 20. one-way inclined plane drive member; 21. inclined plane extrusion block; 22. limit block; 23. limit groove; 24. mounting seat 2; 25. rack; 26. gear; 27. connecting rod; 28. rotating wheel 1; 29. transmission belt; 30. rotating wheel 2; 31. mounting rod; 32. mounting suction cup. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0044] The specific implementation of the present invention is described in detail below with reference to specific embodiments.

[0045] like Figures 1 to 3 FIG. 1 is a structural diagram of a natural gas leak detection device provided by an embodiment of the present invention, wherein the detection device comprises:

[0046] The anti-leakage pipe 4 is sleeved on the outside of the natural gas pipeline 1. The anti-leakage pipe 4 is provided with a hole groove corresponding to the valve switch 2. The connection parts of the anti-leakage pipe 4 with the natural gas pipeline 1 and the valve switch 2 are sealed. The anti-leakage pipe 4 is fixed by the installation assembly;

[0047] A one-way driven absorption component is connected to the anti-leakage pipeline 4 and generates a driving force based on the pressure of the natural gas;

[0048] an alarm component connected to the one-way drive absorption component and activated based on the driving force of the one-way drive absorption component;

[0049] The main closing component is connected to the one-way driving absorption component, and is activated based on the driving force of the one-way driving absorption component to rotate the valve switch 2 to close the valve.

[0050] In one embodiment of the present invention, the natural gas leak detection device addresses the problems in the prior art and is provided with a one-way driven absorption component connected to a leak-proof pipe 4. The leak-proof pipe 4 is provided on the outside of the natural gas pipeline 1 to seal the connection part. If a leak occurs in the connection part, the natural gas will gather in the leak-proof pipe 4 and rise into the one-way driven absorption component. On the one hand, it generates a driving force to drive the alarm component and the main switch component to open, which can not only alarm in time, but also rotate the valve switch 2 to close the valve to prevent further leakage. On the other hand, it can also absorb the leaked natural gas to eliminate safety hazards.

[0051] like Figures 1 to 3 As shown, as another preferred embodiment of the present invention, the installation component includes:

[0052] A mounting plate 3 connected to a leak-proof pipe 4;

[0053] The mounting suction cup 32 is mounted on the mounting plate 3 and is used to connect to the mounting surface.

[0054] In order to maintain the stability of the anti-leakage pipe 4, the mounting plate 3 is fixed to the mounting surface using the mounting suction cup 32, thereby fixing the anti-leakage pipe 4.

[0055] like Figure 5 As shown, as a preferred embodiment of the present invention, the one-way drive absorption component includes:

[0056] An air outlet pipe 5 is connected to the anti-leakage pipe 4;

[0057] An absorption pipe 6, the absorption pipe 6 is connected to the gas outlet pipe 5 through a connecting pipe 7, and the connecting pipe 7 is a truncated cone structure;

[0058] The eardrum 8 is installed in the air outlet pipe 5 and the connecting pipe 7. The outer wall of the eardrum 8 is provided with a sealing ring 9 that contacts the inner wall of the connecting pipe 7 to achieve sealing;

[0059] A piston 10 is installed in the eardrum 8. A piston rod 11 is provided on the piston 10. The other end of the piston rod 11 passes through the absorption tube 6 and is located outside.

[0060] A mounting ring plate 12 is fixedly mounted in the absorber tube 6 , an elastic member 14 is mounted between the mounting ring plate 12 and the piston 10 , and the elastic member 14 is sleeved on the outer side of the piston rod 11 ;

[0061] The absorption chamber 13 is located in a chamber formed by the mounting ring plate 12 and the connecting pipe 7 . The absorption chamber 13 is filled with a natural gas adsorbent for absorbing leaked natural gas.

[0062] In the natural state, the sealing ring 9 on the outside of the tympanic membrane 8 is in close contact with the inner wall of the connecting pipe 7 to achieve sealing. When natural gas leaks, the gas enters the outlet pipe 5 and pushes the tympanic membrane 8. Since the connecting pipe 7 is a frustum structure, the sealing ring 9 is separated from the connecting pipe 7, and the gas can enter the absorption tube 6 through the gap between the sealing ring 9 and the connecting pipe 7, pass through the gap in the mounting ring plate 12 and be absorbed by the natural gas adsorbent in the absorption chamber 13; in the stage where the gas pushes the tympanic membrane 8 to move, the movement of the tympanic membrane 8 drives the piston 10 to move, and the piston 10 drives the piston rod 11 to move, generating a driving force. At the same time, the piston 10 drives the elastic part 14 to deform and compress. When there is no gas pressure, the piston 10 is reset under the action of the elastic part 14, and the piston 10 drives the tympanic membrane 8 and the sealing ring 9 to reset, thereby achieving sealing again.

[0063] like Figure 2 As shown, as a preferred embodiment of the present invention, the alarm component includes:

[0064] Mounting seat 15, the mounting seat 15 is mounted on the mounting plate 3;

[0065] The alarm 16 is mounted on the mounting base 15. The alarm 16 corresponds to the piston rod 11. When the piston rod 11 is pushed and moved, the alarm 16 is activated to sound an alarm.

[0066] After the piston rod 11 is driven by the gas, the alarm 16 is pressed, and the alarm 16 can be activated to sound an alarm.

[0067] like Figure 2 and Figure 4 As shown, as a preferred embodiment of the present invention, the main switch assembly includes:

[0068] A one-way control assembly connected to the piston rod 11 and generating a one-way driving force based on the movement of the piston rod 11;

[0069] The conversion transmission component is connected between the one-way control component and the valve switch 2, and is used to drive the valve switch 2 to rotate and close the valve;

[0070] Specifically, the one-way control component includes:

[0071] Connecting piece 17 is connected to the piston rod 11, and the connecting piece 17 is connected to the connecting piece 3 19 through the connecting piece 2 18;

[0072] A one-way inclined plane driving member 20 is connected to the connecting member 3 19, and the driving surface of the one-way inclined plane driving member 20 is an inclined plane structure;

[0073] The inclined surface extrusion block 21 corresponds to the one-way inclined surface driving member 20 and is limitedly installed on the mounting seat 24. The mounting seat 24 is installed on the mounting plate 3. The piston rod 11 drives the one-way inclined surface driving member 20 to move, generates an extrusion force on the inclined surface extrusion block 21, and drives the inclined surface extrusion block 21 to move in a limited direction.

[0074] When the piston rod 11 moves, it drives the one-way inclined plane driving member 20 to move through the connecting member 1 17, the connecting member 2 18 and the connecting member 3 19. The one-way inclined plane driving member 20 generates an extrusion force on the inclined plane extrusion block 21, thereby driving the inclined plane extrusion block 21 to move. The movement of the inclined plane extrusion block 21 is converted into a rotational force by the conversion transmission component, thereby driving the valve switch 2 to rotate (the valve switch 2 is open when it is kept vertical to the natural gas pipeline 1, and it is closed when the valve switch 2 is rotated to be perpendicular to the natural gas pipeline 1). Since the action between the one-way inclined plane driving member 20 and the inclined plane extrusion block 21 is unidirectional, when the piston rod 11 is driven to reset, the one-way inclined plane driving member 20 moves in the opposite direction, and will not drive the inclined plane extrusion block 21 to reset, and thus will not reopen the valve switch 2. This can ensure that the staff can check this part after the alarm and valve closing before manually opening the valve switch 2 to ensure safety.

[0075] like Figure 4 As shown, as a preferred embodiment of the present invention, a limiting groove 23 is provided on the mounting seat 24, and a limiting block 22 is provided on the inclined extrusion block 21 and is slidably installed in the limiting groove 23 to limit the moving trajectory of the inclined extrusion block 21.

[0076] Under the cooperation of the limiting groove 23 and the limiting block 22 , when the one-way inclined plane driving member 20 and the inclined plane extrusion block 21 generate an extrusion force (laterally), the inclined plane extrusion block 21 is driven to move vertically.

[0077] like Figure 4 As shown, as a preferred embodiment of the present invention, the conversion transmission assembly includes:

[0078] The rack 25 is connected to the inclined extrusion block 21;

[0079] A gear 26 is mounted on one side of the rack 25 and continuously meshes with the rack 25. The gear 26 is connected to a rotating wheel 28 via a connecting rod 27. The rotating wheel 28 is rotatably mounted on the anti-leakage pipe 4 via a mounting rod 31.

[0080] The second rotating wheel 30 is installed on the outside of the valve switch 2. A transmission belt 29 is sleeved between the first rotating wheel 28 and the second rotating wheel 30 to drive the valve switch 2 to rotate.

[0081] When the inclined extrusion block 21 moves, it drives the rack 25 to move. The rack 25 is continuously engaged with the gear 26 to drive the gear 26 to rotate. The gear 26 drives the rotating wheel 1 28 to rotate through the connecting rod 27. The rotating wheel 1 28 drives the rotating wheel 2 30 to rotate through the transmission belt 29, thereby driving the valve switch 2 to rotate, thereby achieving the purpose of automatic valve closing.

[0082] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A natural gas leak detection device, characterized in that: The detection equipment includes: A leak-proof pipe (4), the leak-proof pipe (4) is sleeved on the outside of the natural gas pipe (1), a hole groove is opened on the leak-proof pipe (4) corresponding to the valve switch (2), the connection parts of the leak-proof pipe (4) with the natural gas pipe (1) and the valve switch (2) are sealed, and the leak-proof pipe (4) is fixed by means of an installation assembly; A one-way driven absorption component connected to the anti-leakage pipeline (4) generates a driving force based on the pressure of the natural gas; an alarm component connected to the one-way drive absorption component and activated based on the driving force of the one-way drive absorption component; The main closing component is connected to the one-way driving absorption component, and is activated based on the driving force of the one-way driving absorption component to rotate the valve switch (2) to close the valve.

2. The natural gas leak detection device according to claim 1, characterized in that: The one-way drive absorption component includes: An air outlet pipe (5) is connected to the anti-leakage pipe (4); An absorption pipe (6), the absorption pipe (6) being connected to the air outlet pipe (5) via a connecting pipe (7), the connecting pipe (7) being a truncated cone-shaped structure; A tympanic membrane (8) is installed in the air outlet pipe (5) and the connecting pipe (7), and a sealing ring (9) is provided on the outer wall of the tympanic membrane (8) and contacts the inner wall of the connecting pipe (7) for achieving sealing; A piston (10) is installed in the eardrum (8), and a piston rod (11) is provided on the piston (10), and the other end of the piston rod (11) passes through the absorption tube (6) and is located outside; A mounting ring plate (12) is fixedly mounted in the absorption tube (6); an elastic member (14) is mounted between the mounting ring plate (12) and the piston (10); and the elastic member (14) is sleeved on the outside of the piston rod (11); The absorption chamber (13) is located in a chamber formed by the mounting ring plate (12) and the connecting pipe (7). The absorption chamber (13) is filled with a natural gas adsorbent for absorbing leaked natural gas.

3. The natural gas leak detection device according to claim 2, characterized in that: The installation components include: A mounting plate (3), the mounting plate (3) being connected to the anti-leakage pipe (4); A mounting suction cup (32) is mounted on the mounting plate (3) and is used for connecting to the mounting surface.

4. The natural gas leak detection device according to claim 3, characterized in that: The alarm component includes: A mounting seat (15), wherein the mounting seat (15) is mounted on the mounting plate (3); An alarm (16) is mounted on the first mounting seat (15). The alarm (16) corresponds to the piston rod (11). When the piston rod (11) is pushed and moved, the alarm (16) is activated to sound an alarm.

5. The natural gas leak detection device according to claim 3, characterized in that: The main switch component includes: a one-way control assembly connected to the piston rod (11) and generating a one-way driving force based on the movement of the piston rod (11); The conversion transmission component is connected between the one-way control component and the valve switch (2) and is used to drive the valve switch (2) to rotate and close the valve.

6. The natural gas leak detection device according to claim 5, characterized in that: The one-way control component includes: Connecting piece 1 (17) is connected to the piston rod (11), and the connecting piece 1 (17) is connected to the connecting piece 3 (19) through the connecting piece 2 (18); A one-way inclined plane driving member (20) is connected to the connecting member 3 (19), wherein the driving surface of the one-way inclined plane driving member (20) is an inclined plane structure; The inclined surface extrusion block (21) is limitedly mounted on the second mounting seat (24), and the second mounting seat (24) is mounted on the mounting plate (3). The piston rod (11) drives the one-way inclined surface driving member (20) to move, thereby generating an extrusion force on the inclined surface extrusion block (21), and driving the inclined surface extrusion block (21) to move in a limited direction.

7. The natural gas leak detection device according to claim 6, characterized in that: A limiting groove (23) is provided on the second mounting seat (24), and a limiting block (22) is provided on the inclined surface extrusion block (21) and is slidably installed in the limiting groove (23) to limit the movement trajectory of the inclined surface extrusion block (21).

8. The natural gas leak detection device according to claim 6, characterized in that: The conversion transmission assembly includes: A rack (25) connected to the inclined surface extrusion block (21); A gear (26) is mounted on one side of the rack (25) and is continuously meshed with the rack (25). The gear (26) is connected to a rotating wheel (28) via a connecting rod (27). The rotating wheel (28) is rotatably mounted on the anti-leakage pipe (4) via a mounting rod (31); The second rotating wheel (30) is installed on the outside of the valve switch (2). A transmission belt (29) is provided between the first rotating wheel (28) and the second rotating wheel (30) for driving the valve switch (2) to rotate.

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