Emptying gas recovery device

Abstract

The utility model discloses an emptying gas recovery device which comprises a gas recovery tank, a flow distribution valve, an intelligent control module and a pressure regulating valve, the gas recovery tank is provided with a gas inlet, a gas outlet, a water inlet and a water outlet; a pressure sensor is mounted in the gas recovery tank; the flow distribution valve is mounted between the gas conveying pipeline and the main emptying pipeline; the air port is connected with the flow distribution valve through an air inlet pipeline; the pressure regulating valve is mounted on the air inlet pipeline; the intelligent control module is in signal connection with the flow distribution valve, the pressure regulating valve and the pressure sensor, and the flow distribution valve is in linkage control connection with the pressure sensor through the intelligent control module. According to the utility model, gas in the gas transmission pipeline of the gas transmission station can be uniformly collected and stored, so that the gas is prevented from being directly discharged into the atmosphere or directly emptied for combustion, the atmospheric pollution is reduced, and the resource utilization rate is improved; the gas recovery device is high in automation degree, capable of dynamically regulating and controlling gas quantity and gas pressure in the gas recovery tank, capable of preventing potential safety hazards and high in practicability.

Description

Technical Field

[0001] This utility model relates to the field of natural gas transmission station vent gas recovery technology, and in particular to a vent gas recovery device. Background Technology

[0002] During maintenance or repair, existing natural gas transmission stations typically use direct venting and combustion to treat residual gas in the pipeline. This results in significant waste of natural gas energy, low combustion efficiency, and the generation of large amounts of CO2 and NO. x These gases exacerbate the greenhouse effect and pollute the air.

[0003] Existing gas recovery devices suffer from problems such as complex equipment, large size, multi-stage compression and gas storage design, and narrow applicability, making them difficult to promote and apply in small and medium-sized gas transmission stations. Utility Model Content

[0004] This invention provides an air release gas recovery device, which can solve the above-mentioned problems existing in the prior art.

[0005] To solve the above-mentioned technical problems, this utility model provides an exhaust gas recovery device, including: a gas recovery tank, a flow distribution valve, an intelligent control module, and a pressure regulating valve;

[0006] The gas recovery tank is equipped with an air inlet, an air outlet, a water inlet, and a water outlet; a pressure sensor is installed inside the gas recovery tank.

[0007] The flow distribution valve is installed between the gas transmission pipeline and the main vent pipeline;

[0008] The gas recovery tank's inlet is connected to the flow distribution valve via an inlet pipe;

[0009] The pressure regulating valve is installed on the air intake pipe;

[0010] The intelligent control module is connected to the flow distribution valve, the pressure regulating valve, and the pressure sensor. The flow distribution valve is linked to the pressure sensor through the intelligent control module, and its opening degree is dynamically adjusted according to the feedback data from the pressure sensor.

[0011] In a preferred embodiment of this utility model, the intake pipe and the flow distribution valve are connected by a magnetic sealing flange.

[0012] In a preferred embodiment of this utility model, shut-off valves are respectively installed on the air intake pipe and the air delivery pipe upstream of the flow distribution valve.

[0013] In a preferred embodiment of this invention, the pressure sensor is located at the top of the gas recovery tank, and its vertical height is higher than the highest liquid level line of the inlet and outlet.

[0014] In a preferred embodiment of this utility model, the water inlet is connected to a water source via a high-pressure water pump, the water outlet is equipped with a drain valve, and the intelligent control module controls the opening and closing of the high-pressure water pump and the drain valve to achieve gas replacement.

[0015] The beneficial effects of this utility model are as follows: This utility model provides an air venting gas recovery device, which, through a gas recovery tank, flow distribution valve, intelligent control module, and pressure regulating valve, can uniformly collect and store the gas in the gas transmission pipeline of the gas transmission station, avoiding direct emission of gas into the atmosphere or direct venting and combustion, reducing air pollution, and improving resource utilization. The device of this utility model has a high degree of automation and can dynamically regulate the gas volume and gas pressure in the gas recovery tank, preventing safety hazards and making it highly practical. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a preferred embodiment of the air release gas recovery device of this utility model;

[0017] The components in the attached diagram are labeled as follows:

[0018] 10. Gas recovery tank; 11. Air inlet; 12. Air outlet; 13. Water inlet; 14. Water outlet; 15. Pressure sensor; 16. High-pressure water pump; 17. Drain valve; 18. Shut-off valve.

[0019] 20. Flow distribution valve, 30. Intelligent control module, 40. Pressure regulating valve, 50. Gas transmission pipeline, 60. Main vent pipeline. Detailed Implementation

[0020] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0021] Please see Figure 1 The embodiments of this utility model include:

[0022] Example 1

[0023] This utility model discloses an exhaust gas recovery device, including: a gas recovery tank 10, a flow distribution valve 20, an intelligent control module 30, and a pressure regulating valve 40.

[0024] The gas recovery tank 10 has an air inlet 11, an air outlet 12, a water inlet 13, and a water outlet 14. A pressure sensor 15 is installed on the inner top of the gas recovery tank 10, and the vertical height of the pressure sensor 15 is higher than the highest liquid level line of the water inlet 13 and the water outlet 14.

[0025] The inlet 13 is connected to a water source via a high-pressure water pump 16, and the outlet 14 is equipped with a drain valve 17. After maintenance or troubleshooting, clean water is used to replace the stored gas in the gas recovery tank 10. The replaced gas is then treated to reduce air pollution. The clean water in the tank can be reused, improving resource utilization. Additionally, the clean water in the tank can also be used for emergency firefighting.

[0026] During replacement, the intelligent control module 30 starts the high-pressure water pump 16 to inject clean water at a pressure of 1.2MPa for 20 minutes until the pressure sensor 15 detects that the gas in the gas recovery tank 10 has been completely discharged.

[0027] The intelligent control module 30 is signal-connected to the high-pressure water pump 16 and the drain valve 17 to control the opening and closing of the high-pressure water pump 16 and the drain valve 17 to achieve gas replacement and improve the degree of automation.

[0028] The flow distribution valve 20 is installed between the gas transmission pipeline 50 and the main vent pipeline 60, and the gas inlet 11 of the gas recovery tank 10 is connected to the flow distribution valve 20 through an inlet pipeline. The flow distribution valve 20 is used to regulate the amount of gas entering the gas recovery tank 10.

[0029] Specifically, the intake pipe and the flow distribution valve 20 are connected by a magnetic sealing flange, enabling quick assembly and disassembly to meet the venting requirements of different parts. The sealing surface of the magnetic sealing flange is coated with a high-temperature resistant fluororubber layer, and the magnetic component uses neodymium iron boron permanent magnets to ensure the sealing performance and service life of the flange and prevent gas leakage.

[0030] The pressure regulating valve 40 is installed on the air inlet pipe to stabilize the gas pressure, and the adjustment range is 0.5 to 3.0 MPa.

[0031] The intelligent control module 30 is connected to the flow distribution valve 20, the pressure regulating valve 40 and the pressure sensor 15, and is used to dynamically adjust the opening of the flow distribution valve 20 according to the feedback data of the pressure sensor 15, so as to ensure that the pressure in the gas recovery tank 10 is within a safe range.

[0032] Specifically, the flow distribution valve 20 is linked to the pressure sensor 15 through the intelligent control module 30, and dynamically adjusts its opening degree according to the feedback data of the pressure sensor 15 to achieve pressure regulation in the gas recovery tank 10.

[0033] In addition, the intelligent control module 30 also presets a pressure threshold. When the pressure inside the gas recovery tank 10 exceeds the threshold, it automatically closes the flow distribution valve 20 and switches to the main venting pipe 60 to prevent safety hazards.

[0034] In addition, shut-off valves 18 are installed on the intake pipe and on the gas supply pipe 50 upstream of the flow distribution valve 20.

[0035] This utility model discloses an exhaust gas recovery device, which integrates intelligent control and skid-mounted design. It is suitable for maintenance and repair of small and medium-sized gas transmission stations, and its specific advantages are as follows:

[0036] By designing gas recovery tanks, the gas in the gas pipeline can be collected and stored in a unified manner during the maintenance or repair of the gas transmission station, thus preventing energy waste and air pollution caused by combustion.

[0037] By designing a flow distribution valve, an intelligent control module, and a pressure regulating valve, the gas pressure inside the gas recovery tank is automatically and dynamically adjusted to ensure safety.

[0038] By replacing the gas in the gas recovery tank with clean water, air pollution is reduced and resource utilization is improved.

[0039] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An air release gas recovery device, characterized in that, include: Gas recovery tank, flow distribution valve, intelligent control module and pressure regulating valve; The gas recovery tank is equipped with an air inlet, an air outlet, a water inlet, and a water outlet; a pressure sensor is installed inside the gas recovery tank. The flow distribution valve is installed between the gas transmission pipeline and the main vent pipeline; The gas recovery tank's inlet is connected to the flow distribution valve via an inlet pipe; The pressure regulating valve is installed on the air intake pipe; The intelligent control module is connected to the flow distribution valve, the pressure regulating valve, and the pressure sensor. The flow distribution valve is linked to the pressure sensor through the intelligent control module, and its opening degree is dynamically adjusted according to the feedback data from the pressure sensor.

2. The vented gas recovery device according to claim 1, characterized in that, The intake pipe and the flow distribution valve are connected by a magnetic sealing flange.

3. The vented gas recovery device according to claim 1, characterized in that, A shut-off valve is installed on the air intake pipe and on the air delivery pipe upstream of the flow distribution valve.

4. The vented gas recovery device according to claim 1, characterized in that, The pressure sensor is located at the top of the gas recovery tank, and its vertical height is higher than the highest liquid level line of the inlet and outlet.

5. The venting gas recovery device according to claim 1, characterized in that, The inlet is connected to the water source via a high-pressure water pump, and the outlet is equipped with a drain valve. The intelligent control module controls the opening and closing of the high-pressure water pump and the drain valve to achieve gas replacement.

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