Natural gas sampling device and method thereof

A sampling device, natural gas technology, applied in the direction of sampling device, sampling, measuring device, etc., can solve the problems of easy cooling and solidification of sulfur element, time-consuming and laborious sampling process, blockage of sampling port, etc., to achieve easy analysis and processing, smooth sampling process, The effect of preventing clogging

Inactive Publication Date: 2019-01-01
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When sampling, the natural gas enters the lower temperature glass syringe from the higher temperature natural gas pipeline, and the sulfur element is easy to cool and solidify, causing the sampling port to be blocked, resulting in time-consuming and laborious sampling process

Method used

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  • Natural gas sampling device and method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] This embodiment provides a natural gas sampling device, which includes:

[0076] The tubular sampling probe 1 has one end sealed into the sampling port on the natural gas pipeline 2 through an open-hole rubber plug, and the other end is connected to the safety bottle 3. A first valve 101 is provided on the tubular sampling probe 1.

[0077] The upper part of the safety bottle 3 is provided with a second valve 303, and the lower part is provided with a drain valve 304.

[0078] The walls of the tubular sampling probe 1 and the safety bottle 3 are both hollow structures and communicate with each other to form a heat preservation cavity. The heat preservation cavity is filled with thermal oil to form a heating assembly 4. An oil inlet valve 301 and an oil outlet valve 302 are provided on the wall of the safety bottle 3.

[0079] The sampling pump 5, namely the atmospheric sampler, is connected to the safety bottle 3 through the first pipeline.

[0080] The sampling gas bag 6 is co...

Embodiment 2

[0083] This embodiment provides a method for obtaining a natural gas sample by using the device provided in Embodiment 1. The method includes:

[0084] Open the oil inlet valve 301 on the safety bottle 3, close the oil outlet valve 302, pour 160-200℃ heat conduction oil into the insulation cavity, and use the heating assembly 4 to keep the temperature of the safety bottle 3 and the tubular sampling probe 1 at 130-160 ℃, keep the sulfur element in natural gas liquid. Open the first valve 101, the second valve 303, the inlet valve 601, and the outlet valve 602, and extract the natural gas from the natural gas pipeline 2 through the sampling pump 5, so that the natural gas enters the sampling probe 1, the safety bottle 3, and the sampling pump 5. The air bag 6 is then discharged from the air outlet valve 602, so that the natural gas can displace the air in the natural gas sampling device to complete the emptying process of the natural gas sampling device.

[0085] The gas outlet valv...

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PUM

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Abstract

The invention discloses a natural gas sampling device and a method thereof, which belong to the field of gas sampling. The device comprises a tubular sampling probe, wherein a sampling port is inserted into a natural gas pipe at one end, and a safety bottle is connected with the other end; a heating assembly for heating the tubular sampling probe and the safety bottle; a sampling pump connected tothe safety bottle through a first pipeline; and a sampling air bag, wherein the sampling air bag is detachably connected to the sampling pump through a second pipeline, and the sampling air bag is provided with an intake valve and an outlet valve. The natural gas sampling device provided by the invention can avoid the clogging of the sampling port, and the obtained sample has the advantages of good quality and convenient usage, and is suitable for large-scale popularization and application.

Description

Technical field [0001] The invention relates to the field of gas sampling, in particular to a natural gas sampling device and method. Background technique [0002] The sour natural gas extracted from natural gas wells needs to undergo dehydration, desulfurization, and decarbonization before it can be used by users. When desulfurizing natural gas through the Claus process, it is necessary to sample and test the components of natural gas in different reaction stages, so that the operator can understand the H in the natural gas pipeline in time. 2 S and SO 2 In order to judge the progress of the natural gas desulfurization reaction, it is convenient to control the natural gas desulfurization process. Therefore, it is very necessary to provide a natural gas sampling device and sampling method. [0003] The prior art collects natural gas samples in natural gas pipelines through glass syringes. The glass syringe includes a tubular body with a sample inlet at the front end and a piston ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/24
CPCG01N1/2202G01N1/2247
Inventor 朱华东孙晓艳周理陈正华
Owner PETROCHINA CO LTD
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