Full-automatic high-pressure gas drainage device

Abstract

The utility model relates to a full-automatic high-pressure gas drainage device which comprises a drainer, a nitrogen pipeline, gas pressurizing equipment or a pipeline, a low-pressure gas pipeline or a tail gas treatment device and a wastewater collecting tank, the nitrogen pipeline, the coal gas pressurizing equipment or pipeline, the low-pressure coal gas pipeline or tail gas treatment device and the wastewater collecting tank are respectively connected with the drainer through pipelines, the drainer is a closed container, and the tail end of the pipeline, connected with the drainer, of the wastewater collecting tank is always lower than the liquid level in the drainer. And the coal gas pressurizing equipment or pipeline and the low-pressure coal gas pipeline or tail gas treatment device are higher than the drainer. The full-automatic water discharging device has the beneficial effect that water in the coal gas pressurizing equipment or the high-pressure coal gas pipeline can be discharged in a full-automatic manner. And accidents such as ignition, poisoning and explosion which are easily caused by gas overflow during water drainage are prevented. And the high-pressure gas is prevented from entering the nitrogen pipeline under abnormal conditions. Condensate water is prevented from entering a low-pressure gas pipeline or a tail gas pipeline under abnormal conditions.

Description

Technical Field

[0001] This utility model relates to the fields of safety and environmental protection technology and high-pressure exhaust gas recovery and treatment technology, and in particular to a fully automatic high-pressure gas drainage device. Background Technology

[0002] High-pressure gas is an important medium for heating materials and is widely used in industrial production. After cooling, a certain amount of moisture in the high-pressure gas will condense and decompose. Water accumulation in the gas system can cause accidents such as high pipeline resistance, pipe breaks, and heating device shutdown. Therefore, a drainage system is needed. Atmospheric pressure gas systems are equipped with drainers for periodic drainage. However, high-pressure gas systems, due to their high pressure, difficulty in setting up water seals, and the ease with which water seals can be broken, can only rely on manual drainage. But during drainage, there is a risk of gas leakage, leading to fire, poisoning, and explosions. Therefore, a more reasonable drainage method for high-pressure gas systems needs to be found. Utility Model Content

[0003] This invention provides a fully automatic high-pressure gas drainage device to solve the problems in condensate drainage from traditional gas pressurization equipment (such as gas booster compressors) and high-pressure gas pipelines. It avoids the dangers of releasing water under pressure during high-pressure gas equipment and pipelines, which can lead to fires, poisoning, and explosions due to the large amount of gas carried during drainage. The device recovers or treats the gas released during drainage, achieving automatic drainage and closed-loop recovery of residual gas in the high-pressure gas system. The device is equipped with safety accessories such as one-way valves and one-way gas valves, ensuring high safety and reliability.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A fully automatic high-pressure gas drainage device includes a drainer, a nitrogen pipeline, a gas pressurizing device or pipeline, a low-pressure gas pipeline or tail gas treatment device, and a wastewater collection tank. The nitrogen pipeline, the gas pressurizing device or pipeline, the low-pressure gas pipeline or tail gas treatment device, and the wastewater collection tank are each connected to the drainer via pipelines. The drainer is a closed container. The end of the pipeline connecting the wastewater collection tank and the drainer is always lower than the liquid level in the drainer. The gas pressurizing device or pipeline and the low-pressure gas pipeline or tail gas treatment device are higher than the drainer. A solenoid valve one is installed on the pipeline connecting the nitrogen pipeline and the drainer. A solenoid valve two is installed on the pipeline connecting the gas pressurizing device or pipeline and the drainer. A solenoid valve three is installed on the pipeline connecting the low-pressure gas pipeline or tail gas treatment device and the drainer. A solenoid valve four is installed on the pipeline connecting the wastewater collection tank and the drainer.

[0006] A check valve is connected between the solenoid valve and the drain.

[0007] A one-way air valve is connected between the solenoid valve and the drain.

[0008] A drain pressure detection device is installed on the drain.

[0009] A level gauge is installed on the drain.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. Water in gas pressurization equipment or high-pressure gas pipelines can be released automatically.

[0012] 2. To prevent accidents such as fire, poisoning, and explosions that may occur due to gas leakage during manual water release.

[0013] 3. It has a protective function to prevent high-pressure coal gas from entering the nitrogen pipeline under abnormal conditions.

[0014] 4. It has a protective function to prevent condensate from entering the low-pressure gas pipeline or tail gas pipeline under abnormal conditions.

[0015] 5. The gas carried out during fully automatic drainage can be automatically recovered, which meets environmental protection requirements and low-carbon emission reduction requirements. Attached Figure Description

[0016] Figure 1 This is a process flow diagram of the fully automatic high-pressure gas drainage device of this utility model during operation.

[0017] In the diagram: 1-Gas pressurization equipment or pipeline, 2-Low-pressure gas pipeline or tail gas treatment device, 3-Wastewater collection tank, 4-Solenoid valve one, 5-Solenoid valve two, 6-Solenoid valve three, 7-Solenoid valve four, 8-One-way valve, 9-Drain pressure detection device, 10-Level gauge, 11-Drain, 12-Nitrogen pipeline, 13-One-way valve. Detailed Implementation

[0018] The present invention will be described in more detail through embodiments. These embodiments are merely descriptions of the best implementation of the present invention and do not limit the scope of the present invention in any way.

[0019] like Figure 1As shown, a fully automatic high-pressure gas drainage device includes a drainer 11, a nitrogen pipeline 12, a gas pressurizing device or pipeline 1, a low-pressure gas pipeline or tail gas treatment device 2, and a wastewater collection tank 3. The nitrogen pipeline 12, the gas pressurizing device or pipeline 1, the low-pressure gas pipeline or tail gas treatment device 2, and the wastewater collection tank 3 are all connected to the drainer 11 via pipelines. The drainer 11 is a closed container, and the end of the pipeline connecting the wastewater collection tank 3 to the drainer 11 is always lower than the liquid level inside the drainer 11. The gas pressurizing equipment or pipeline 1 and the low-pressure gas pipeline or tail gas treatment device 2 are higher than the drainer 11. A solenoid valve 4 is installed on the pipeline connecting the nitrogen pipeline 12 and the drainer 11. A solenoid valve 5 is installed on the pipeline connecting the gas pressurizing equipment or pipeline 1 and the drainer 11. A solenoid valve 6 is installed on the pipeline connecting the low-pressure gas pipeline or tail gas treatment device 2 and the drainer 11. A solenoid valve 7 is installed on the pipeline connecting the wastewater collection tank 3 and the drainer 11.

[0020] A one-way valve 13 is connected between the solenoid valve 4 and the drain 11.

[0021] A one-way air valve 8 is connected between the solenoid valve 6 and the drain 11.

[0022] A drain pressure detection device 9 is installed on the drain 11.

[0023] A level gauge 10 is installed on the drain 11.

[0024] The method of using this utility model is as follows: Before the device is put into use, the operating drainage cycle of solenoid valve 25 and solenoid valve 36 is set to Amin (adjustable) and the drainage duration is set to Bs (adjustable) according to the amount of condensate in the gas, as well as the lower limit and upper limit of the liquid level of drainer 11. Solenoid valve 14, solenoid valve 25, solenoid valve 37 and solenoid valve 48 are all set to be in the open state when they are operating, and in the closed state under normal conditions. Solenoid valve 25 and solenoid valve 36 are one set of solenoid valves, and solenoid valve 14 and solenoid valve 47 are another set of solenoid valves. The two sets of solenoid valves operate alternately and cannot operate simultaneously.

[0025] Step 1: Open solenoid valve 2 (5) and solenoid valve 3 (6). The condensate in the gas system will start to drain into drainer 11 for Bs, and the residual gas will be sent to the low-pressure gas pipeline or tail gas treatment device 2.

[0026] Step 2: When the drainage duration reaches Bs or when the upper limit of the liquid level is reached, close solenoid valve 25 and solenoid valve 36 to stop drainage.

[0027] Step 3: The liquid level in drainer 11 gradually rises. When it reaches the upper limit, solenoid valve 4 and solenoid valve 7 are opened simultaneously. Under nitrogen pressure, drainer 11 begins to discharge liquid into wastewater collection tank 3. The liquid level in drainer 11 begins to drop. When it reaches the lower limit, solenoid valve 4 and solenoid valve 7 are closed to stop the discharge.

[0028] Step 4: Based on the drainage cycle of Amin, repeat steps 2 and 3.

[0029] The gas pressurization equipment has a gas pressure of 0.05–1 MPa. The working pressure of solenoid valves 1-4, 2-5, 3-7, and 4-8 is 0–1.6 MPa. The nitrogen pressure is controlled at 0.4–0.6 MPa. The maximum pressure that one-way valve 8 and 13 can withstand is 1.6 MPa. The drainer 11 has a control pressure of 0–1.6 MPa, a drainer level of 0.5–3 meters, a drain cycle of 240–360 minutes, and a drain duration of 5–10 seconds.

[0030] The above provides a detailed description of the fully automatic high-pressure gas drainage device provided by this utility model. For those skilled in the art, improvements and modifications can be made to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in this utility model, based on its technical solution and concept, should be included within the protection scope of this utility model.

Claims

1. A fully automatic high-pressure gas drainage device, characterized in that, The system includes a drainer, a nitrogen pipeline, a gas pressurizing device or pipeline, a low-pressure gas pipeline or tail gas treatment device, and a wastewater collection tank. The nitrogen pipeline, gas pressurizing device or pipeline, low-pressure gas pipeline or tail gas treatment device, and wastewater collection tank are each connected to the drainer via pipelines. The drainer is a closed container. The end of the pipeline connecting the wastewater collection tank and the drainer is always lower than the liquid level inside the drainer. The gas pressurizing device or pipeline and the low-pressure gas pipeline or tail gas treatment device are higher than the drainer. A solenoid valve 1 is installed on the pipeline connecting the nitrogen pipeline and the drainer. A solenoid valve 2 is installed on the pipeline connecting the gas pressurizing device or pipeline and the drainer. A solenoid valve 3 is installed on the pipeline connecting the low-pressure gas pipeline or tail gas treatment device and the drainer. A solenoid valve 4 is installed on the pipeline connecting the wastewater collection tank and the drainer.

2. The fully automatic high-pressure gas drainage device according to claim 1, characterized in that, A check valve is connected between the solenoid valve and the drain.

3. The fully automatic high-pressure gas drainage device according to claim 1, characterized in that, A one-way air valve is connected between the solenoid valve and the drain.

4. The fully automatic high-pressure gas drainage device according to claim 1, characterized in that, A drain pressure detection device is installed on the drain.

5. The fully automatic high-pressure gas drainage device according to claim 1, characterized in that, A level gauge is installed on the drain.

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