Emergency cut-off device for natural gas leakage

Abstract

The utility model discloses an emergency cut-off device for natural gas leakage, which relates to the field of natural gas transportation and safety equipment, and comprises a main pipeline, a home-entry pipe, a monitoring cut-off mechanism and an active rapid cut-off mechanism, the main pipeline is fixedly communicated with the home-entry pipe, the monitoring cut-off mechanism is arranged on the home-entry pipe, and the active rapid cut-off mechanism is arranged on the main pipeline. According to the utility model, through the monitoring cut-off mechanism and the active rapid cut-off mechanism which are arranged on the home-entry pipe, real-time monitoring and rapid emergency processing of natural gas leakage are realized, and when the concentration monitor fails or is powered off, a user can manually pull down a pull ring on a fixing nail to cut off the natural gas leakage, so that the natural gas leakage can be timely monitored, and the service life of the natural gas leakage can be prolonged. The pull rope is released, the push rod is pushed to move upwards through resilience force of the spring, the push-pull valve is rapidly closed to cut off the gas source, the device has automatic and manual double cut-off functions, and the safety and emergency treatment capacity of natural gas use can be effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of natural gas transportation and safety equipment, in particular to a natural gas leakage emergency cut-off device. Background Art

[0002] As an important clean energy source, natural gas is widely used in homes, businesses, and industries. However, during its transportation and use, gas leaks may occur due to factors such as aging pipelines, loose connections, or improper operation. When natural gas leaks reach a certain concentration, they can easily cause fires or explosions if exposed to open flames or static sparks, posing a serious threat to personal and property safety.

[0003] Existing natural gas leak shutoff devices typically rely on electric drive, using concentration monitors to detect gas concentration and trigger electronically controlled valves to cut off the flow. However, when power outages or electronically controlled equipment malfunction, these devices cannot operate normally, resulting in the gas source not being cut off in a timely manner. Furthermore, some existing devices lack manual emergency functions, making it difficult for users to quickly shut off the gas source in an emergency.

[0004] Therefore, we propose a natural gas leakage emergency cut-off device. Utility Model Content

[0005] 1. Problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of the present invention is to provide a natural gas leakage emergency cut-off device to solve the problems mentioned in the above background technology.

[0007] 2. Technical solution

[0008] To achieve the above objectives, the present invention provides the following technical solutions:

[0009] When the valve is in the air, the valve body is tightened, and the push rod is tightened, so that the valve body can be tightened.

[0010] As a further solution of the present invention: the monitoring and cutting-off mechanism includes a cutoff device and a concentration monitor. The cutoff device is installed on the household pipe, and the concentration monitor is installed near the external gas equipment.

[0011] As a further solution of the present invention: a pull ring is fixed on the bottom end of the pull rope, a fixing nail is fixed on the supporting surface, and the pull ring is sleeved on the fixing nail.

[0012] As a further solution of the present invention: the upper surface of the U-shaped vertical plate is fixedly connected to a limit plate.

[0013] As a further solution of the present invention: a main valve is installed on the household pipe.

[0014] As a further solution of the present invention: the concentration monitor is electrically connected to the cutoff device.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model realizes real-time monitoring and rapid emergency treatment of natural gas leakage through the monitoring and cutting-off mechanism and the active and rapid cutting-off mechanism arranged on the household pipe. The monitoring and cutting-off mechanism consists of a concentration monitor and a cutter. The concentration monitor monitors the surrounding gas concentration in real time and triggers the cutter to automatically cut off the gas source of the household pipe when an abnormality occurs. When the concentration monitor of the active and rapid cutting-off mechanism fails or there is a power outage, the user can manually pull off the pull ring on the fixing nail to release the pull rope, and use the rebound force of the spring to push the push rod upward to quickly close the push-pull valve to cut off the gas source. The device has both automatic and manual dual cutting-off functions, which can effectively improve the safety of natural gas use and emergency treatment capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a natural gas leak emergency shut-off device;

[0018] Figure 2 for Figure 1 Schematic diagram of the structure of the enlarged area A in the middle

[0019] In the figure: 1. Main pipeline; 2. Main valve; 3. Household inlet pipe; 4. Shutoff device; 5. Concentration monitor; 6. Push-pull valve; 7. U-shaped top plate; 8. Limit plate; 9. U-shaped vertical plate; 10. Bottom plate; 11. Push rod; 12. Fixing nail; 13. Pull ring; 14. Pull rope; 15. Spring; 16. Moving rod; 17. Slide groove. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present invention.

[0021] See also Figures 1-2 In an embodiment of the utility model, a natural gas leak emergency cut-off device includes a main pipeline 1, a house inlet pipe 3, a monitoring and cutting-off mechanism, and an active and rapid cutting-off mechanism. The main pipeline 1 is fixedly connected to the house inlet pipe 3, and the house inlet pipe 3 is installed with a main valve 2 for controlling the overall switching state of natural gas. The house inlet pipe 3 is provided with a monitoring and cutting-off mechanism, and the monitoring and cutting-off mechanism includes a cut-off device 4 and a concentration monitor 5. The cut-off device 4 is installed on the house inlet pipe 3, and the concentration monitor 5 is installed near the external gas equipment. The concentration monitor 5 is electrically connected to the cut-off device 4.

[0022] It should be noted that in order to ensure the safety of natural gas use, a monitoring and shutoff mechanism is set on the household pipe 3, and the concentration monitor 5 is installed near the external gas equipment to monitor the natural gas concentration in the surrounding air in real time. When the natural gas leakage causes the concentration in the air to reach the set alarm threshold, the concentration monitor 5 will transmit the detected abnormal signal to the electrically connected shutoff device 4. After receiving the signal, the shutoff device 4 will quickly close the household pipe 3 and cut off the supply of natural gas, thereby effectively avoiding safety accidents that may be caused by continued leakage of natural gas.

[0023] The inlet pipe 3 is provided with an active quick shut-off mechanism, which includes a push-pull valve 6, a U-shaped top plate 7, a U-shaped vertical plate 9, a bottom plate 10, a spring 15, a push rod 11, a moving rod 16 and a pull rope 14. The inlet pipe 3 is provided with a push-pull valve 6, the bottom plate 10 is fixed on the support surface, and the upper surface of the bottom plate 10 is fixedly connected to two symmetrically distributed U-shaped vertical plates 9, the two sides of the U-shaped top plate 7 are slidably connected to the inner walls of the two U-shaped vertical plates 9, and the lower inner wall of the bottom plate 10 is connected to the push rod 11 through the spring 15, and the top of the push rod 11 passes through the inner wall of the U-shaped top plate 7 and It is slidably connected to it, and the top of the push rod 11 is in contact with the push-pull valve 6; a sliding groove 17 is provided on the outer side surface of the U-shaped vertical plate 9, and a moving rod 16 is fixedly connected on both sides of the U-shaped top plate 7. The moving rod 16 is slidably connected to the sliding groove 17, and a pull rope 14 is wrapped around the outer side of the moving rod 16, and the bottom end of the pull rope 14 is fixed with a pull ring 13, and a fixing nail 12 is fixed on the supporting surface. The pull ring 13 is sleeved on the fixing nail 12, and the upper surface of the U-shaped vertical plate 9 is fixedly connected to the limiting plate 8, which further prevents the U-shaped top plate 7 from accidentally sliding out of the mechanism range, thereby improving the stability and service life of the device.

[0024] It should be noted that an active quick-cut-off mechanism is provided on the household pipe 3, which is mainly used to quickly cut off the flow of natural gas in an emergency to ensure the efficiency of emergency treatment in the event of a leak. Under normal circumstances, the push rod 11 is compressed under the pressure of the spring 15, and the push-pull valve 6 is in an open state, thereby ensuring the normal supply of natural gas. The bottom end of the pull rope 14 is fixedly connected to the pull ring 13, and the pull ring 13 is sleeved on the fixing nail 12. Through this design, the cooperation between the pull ring 13 and the fixing nail 12 plays a role in fixing the pull rope 14, so that the push rod 11 is always in a state of compressing the spring 15.

[0025] In an emergency or manual operation situation, the user only needs to pull off the pull ring 13 on the fixing nail 12. At this time, the pull rope 14 loses its fixation, and the spring 15 quickly releases its compressed energy, pushing the push rod 11 to move upward. The upward movement of the push rod 11 drives the push-pull valve 6 to close the airflow channel of the household pipe 3, thereby realizing the rapid cutoff of natural gas. The rebound force provided by the spring 15 makes the entire action quick and efficient, effectively preventing the gas from continuing to leak or spread, and reducing the risk of accidents. When the external force is released, the user can reset the device by re-fixing the pull ring 13 on the fixing nail 12. The spring 15 is in a compressed state again, the push-pull valve 6 returns to the open position, the natural gas is re-supplied, and the device enters normal working mode.

[0026] To sum up, the utility model realizes real-time monitoring and rapid emergency treatment of natural gas leakage through the monitoring and cut-off mechanism and the active and rapid cut-off mechanism provided on the household pipe 3. The monitoring and cut-off mechanism consists of a concentration monitor 5 and a cut-off device 4. The concentration monitor 5 monitors the surrounding gas concentration in real time. When an abnormality occurs, the cut-off device 4 is triggered to automatically cut off the gas source of the household pipe 3. When the concentration monitor 5 fails or the power is cut off, the user can manually pull off the pull ring 13 on the fixing nail 12 of the active and rapid cut-off mechanism, release the pull rope 14, and use the rebound force of the spring 15 to push the push rod 11 upward, quickly close the push-pull valve 6 and cut off the gas source. The device has both automatic and manual dual cut-off functions, which can effectively improve the safety of natural gas use and emergency handling capabilities.

[0027] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0028] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements 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 emergency cut-off device, characterized in that: include: Main pipeline (1); An inlet pipe (3), the main pipeline (1) is fixedly connected to the inlet pipe (3); A monitoring and cutting-off mechanism is provided on the household pipe (3); An active quick shutoff mechanism is provided on the household inlet pipe (3), and the active quick shutoff mechanism comprises a push-pull valve (6), a U-shaped top plate (7), a U-shaped vertical plate (9), a bottom plate (10), a spring (15), a push rod (11), a moving rod (16) and a pull rope (14). The push-pull valve (6) is installed on the household inlet pipe (3), the bottom plate (10) is fixed on the supporting surface, and the upper surface of the bottom plate (10) is fixedly connected to two symmetrically distributed U-shaped vertical plates (9), and the two sides of the U-shaped top plate (7) are connected to the two U-shaped vertical plates (9). The inner wall of the U-shaped vertical plate (9) is slidably connected, and the lower inner wall of the bottom plate (10) is connected to a push rod (11) through a spring (15), the top end of the push rod (11) passes through the inner wall of the U-shaped top plate (7) and is slidably connected thereto, and the top end of the push rod (11) contacts the push-pull valve (6); a sliding groove (17) is provided on the outer side surface of the U-shaped vertical plate (9), and a moving rod (16) is fixedly connected to both sides of the U-shaped top plate (7), the moving rod (16) is slidably connected to the sliding groove (17), and a pull rope (14) is wound around the outer side of the moving rod (16).

2. A natural gas leakage emergency cut-off device according to claim 1, characterized in that: The monitoring and shutoff mechanism comprises a shutoff device (4) and a concentration monitor (5). The shutoff device (4) is installed on the household pipe (3), and the concentration monitor (5) is installed near external gas equipment.

3. A natural gas leakage emergency cut-off device according to claim 1, characterized in that: The bottom end of the pull rope (14) is fixed with a pull ring (13), a fixing nail (12) is fixed on the support surface, and the pull ring (13) is sleeved on the fixing nail (12).

4. A natural gas leakage emergency cut-off device according to claim 1, characterized in that: The upper surface of the U-shaped vertical plate (9) is fixedly connected to the limiting plate (8).

5. A natural gas leakage emergency cut-off device according to claim 1, characterized in that: A main valve (2) is installed on the household inlet pipe (3).

6. A natural gas leakage emergency cut-off device according to claim 2, characterized in that: The concentration monitor (5) is electrically connected to the cutoff device (4).

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