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CN-224202835-U - Sampling device for sulfur-containing natural gas

CN224202835UCN 224202835 UCN224202835 UCN 224202835UCN-224202835-U

Abstract

The utility model relates to the field of gas field production, in particular to a sampling device for sulfur-containing natural gas, which comprises a sampling bottle, wherein the sampling bottle is provided with a piston, a sampling bottle valve and an atmosphere communication port, the atmosphere communication port is provided with an atmosphere communication valve, a sampling joint is communicated with the sampling bottle valve, a sampling joint valve is arranged between the sampling joint and the sampling bottle valve, a detection joint is communicated with the sampling bottle valve, a detection joint valve is arranged between the detection joint and the sampling bottle valve, a sulfur removal box is communicated with the sampling bottle valve, a sulfur removal box valve is arranged between the sulfur removal box and the sampling bottle valve, an exhaust port is arranged on the sulfur removal box, and sulfur removal materials are contained in the sulfur removal box. The sulfur-containing natural gas in the sampling device is treated by the sulfur removal material in the sulfur removal box and then discharged into the atmosphere, so that the sulfur content in the natural gas is reduced, and the pollution to the atmosphere environment is reduced.

Inventors

  • LIU PENGGANG
  • LIANG ZHONGHONG
  • FANG BIN
  • RAO DONG
  • ZHU ZHI
  • JIANG KE

Assignees

  • 中国石油化工股份有限公司
  • 中国石油化工股份有限公司西南油气分公司

Dates

Publication Date
20260505
Application Date
20250508

Claims (10)

  1. 1. A sulfur-containing natural gas sampling device, comprising: The sampling bottle (21), the sampling bottle (21) is provided with a piston (23), a sampling bottle valve (20) and an atmosphere communication port (17), and the atmosphere communication port (17) is provided with an atmosphere communication valve (16); The sampling connector (1), the sampling connector (1) is communicated with the sampling bottle valve (20), and a sampling connector valve (2) is arranged between the sampling connector (1) and the sampling bottle valve (20); The detection joint (30), the detection joint (30) is communicated with the sampling bottle valve (20), and a detection joint valve (29) is arranged between the detection joint (30) and the sampling bottle valve (20); The sulfur removal case (25), sulfur removal case (25) with sample bottle valve (20) intercommunication, sulfur removal case (25) with be equipped with sulfur removal case valve (24) between sample bottle valve (20), sulfur removal case (25) are equipped with gas vent (28), sulfur removal case (25) hold sulfur removal material (27).
  2. 2. The sampling device for sulfur-containing natural gas according to claim 1, wherein a porous spray head (26) is arranged inside the sulfur removal tank (25), and the porous spray head (26) is communicated with the sulfur removal tank valve (24) through a pipeline.
  3. 3. A sulfur-containing natural gas sampling device according to claim 2, wherein the sulfur-removing material (27) is a sulfur-removing solution.
  4. 4. A sulfur natural gas sampling apparatus according to claim 3 wherein the sulfur removal solution is a sodium hydroxide or calcium hydroxide solution.
  5. 5. The sampling device for sour natural gas according to claim 1, further comprising a gas cylinder (12), the gas cylinder (12) being provided with a first gas cylinder valve (13), the first gas cylinder valve (13) being in communication with the sampling nipple valve (2), the first gas cylinder valve (13) being in communication with the sampling cylinder (21), the gas flowing out of the gas cylinder (12) being able to enter the sampling device line and the sampling cylinder (21) when the first gas cylinder valve (13) is opened, the sampling nipple valve (2) and the atmospheric communication valve (16) are closed.
  6. 6. The sampling device for sour natural gas according to claim 5, characterized in that a second gas cylinder valve (14) is arranged between the sampling joint valve (2) and the first gas cylinder valve (13), and a third gas cylinder valve (15) is arranged between the atmosphere communication valve (16) and the first gas cylinder valve (13); When the first gas cylinder valve (13) and the second gas cylinder valve (14) are opened, the sampling joint valve (2) and the third gas cylinder valve (15) are closed, gas flowing out of the gas cylinder (12) can enter a sampling device pipeline, and when the first gas cylinder valve (13) and the third gas cylinder valve (15) are opened, the second gas cylinder valve (14) and the atmosphere communication valve (16) are closed, gas flowing out of the gas cylinder (12) can enter the sampling cylinder (21).
  7. 7. A sampling device for sour natural gas according to any one of claims 1 to 6, characterised in that the sampling bottle (21) is provided with a metering viewing window (22), the metering viewing window (22) being provided with scale values.
  8. 8. The sampling device for sour natural gas according to claim 7, wherein a depressurization system is provided between the sampling nipple valve (2) and the sampling bottle valve (20).
  9. 9. The sampling device for sour natural gas according to claim 8, wherein the depressurization system comprises a primary pressure regulating valve (3), a secondary pressure regulating valve (5) and a tertiary pressure regulating valve (7).
  10. 10. The sampling device for sulfur-containing natural gas according to claim 9, wherein a first valve (4) is arranged between the primary pressure regulating valve (3) and the secondary pressure regulating valve (5), a second valve (11) is arranged between the primary pressure regulating valve (3) and the sampling bottle valve (20), a third valve (6) is arranged between the secondary pressure regulating valve (5) and the tertiary pressure regulating valve (7), a fourth valve (9) and a fifth valve (10) are arranged between the secondary pressure regulating valve (5) and the sampling bottle valve (20), and a sixth valve (8) is arranged between the tertiary pressure regulating valve (7) and the fourth valve (9).

Description

Sampling device for sulfur-containing natural gas Technical Field The utility model relates to the field of gas field production, in particular to a sampling device for sulfur-containing natural gas. Background In the production process of a sulfur-containing gas well, such as a natural gas well, raw gas is required to be periodically taken from a wellhead, the contents of hydrogen sulfide and various carbon hydrocarbon components are detected, the change trend is tracked, and basic data are provided for gas reservoir development dynamic analysis, numerical simulation, formation sulfur deposition pre-judgment and the like. The existing sampling device has no system for directly treating hydrogen sulfide, after sampling is finished, sulfur-containing natural gas with certain pressure exists in a pipeline, and the sulfur-containing natural gas is directly decompressed on site and discharged into the atmosphere, so that the problem of pollution to the atmosphere environment exists. Meanwhile, residual sulfur-containing natural gas still exists in pipelines and the like in the sampling device after pressure relief, and residual hydrogen sulfide in the sampling device slowly escapes in the transferring and storing processes of the device, so that the atmospheric environment is polluted, and meanwhile, the safety of sampling operators is endangered. The existing sulfur-containing natural gas sampling device cannot accurately meter, has the problem of excessive sampling, and causes waste. Disclosure of utility model The utility model aims to overcome the defects that after sampling is finished, sulfur-containing natural gas with certain pressure in a pipeline is directly discharged or slowly dissipated into the atmosphere, so that the atmospheric environment is polluted, and the safety of sampling personnel is endangered in the sampling device in the prior art. The utility model provides a sampling device for sulfur-containing natural gas, which comprises: The sampling bottle is provided with a piston, a sampling bottle valve and an atmosphere communication port, and the atmosphere communication port is provided with an atmosphere communication valve; The sampling joint is communicated with the sampling bottle valve, and a sampling joint valve is arranged between the sampling joint and the sampling bottle valve; the detection joint is communicated with the sampling bottle valve, and a detection joint valve is arranged between the detection joint and the sampling bottle valve; the sulfur removal case, the sulfur removal case with sample bottle valve intercommunication, the sulfur removal case with be equipped with the sulfur removal case valve between the sample bottle valve, the sulfur removal case is equipped with the gas vent, the sulfur removal case holds the sulfur removal material. The utility model provides a sampling device for sulfur-containing natural gas, which is used for connecting with a gas well, opening a valve of the sampling connector and a valve of a sampling bottle, closing a valve of the detection connector, and enabling the natural gas to be sampled to enter the sampling bottle from the sampling connector. The sampling bottle is used for storing a natural gas sample, the piston can move up and down in the sampling bottle, and the gas pressure difference on the upper side and the lower side of the piston can push the piston to move up and down. When the atmosphere communication valve is opened, the space in the lower part of the piston in the sampling bottle is communicated with the atmosphere, so that the purpose is to ensure that the gas pressure in the lower part of the piston is the same as the external atmospheric pressure when the piston moves downwards. When the sampling is finished, the sampling bottle valve and the atmosphere communication valve are closed, the space in the sampling bottle, which is positioned at the lower part of the piston, is not communicated with the atmosphere, so that the gas pressure at the upper side and the lower side of the piston is ensured to be in a stable state, and the storage and the transfer of gas samples are facilitated. The detection joint is used for connecting the detection device, opening the sampling bottle valve and the detection joint valve, closing the sampling joint valve, and the sampled gas can enter the detection device through the detection joint. After the sampling is finished, the sulfur removal box valve and the sampling bottle valve are opened, the detection joint valve is closed, sulfur-containing natural gas with pressure between the sampling joint valve and the detection joint valve passes through the sulfur removal box and is discharged to the atmosphere through the exhaust port, the sulfur removal box contains sulfur removal materials, the sulfur removal materials can separate hydrogen sulfide from the natural gas in a mode of adsorption, oxidation reaction or neutralization reaction, the sulfur content in the natural gas is red