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Pipeline gas sealed sampling method

A gas and pipeline technology, which is applied in the field of pipeline gas airtight sampling, can solve the problems of troublesome operation and easy misoperation, and achieve the effect of simple operation and safe production.

Active Publication Date: 2017-07-28
北京永兴精佳仪器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The material in the process pipeline is transported by the pump to the inlet flange of the gas-tight sampler, and circulates through the pipe valve inside the gas-tight sampler, and then the fresh material is sampled through the steel cylinder, which usually can only be completed by operating six sampling valve groups. The operation is cumbersome and easy to misuse

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  • Pipeline gas sealed sampling method

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Embodiment Construction

[0016] The preferred embodiments of the present invention will be described in detail below 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, and the protection scope of the present invention can be more clearly defined.

[0017] like figure 1 A pipeline gas airtight sampler as shown includes a cross-conversion four-way valve 1 and a sampling cylinder 2. The cross-conversion four-way valve 1 has a first interface 101, a second interface 102, a third interface 103 and a fourth interface 104. The first interface 101 is connected with a first pipe fitting 111, the second interface 102 is connected with a second pipe fitting 112, the third interface 103 is connected with a third pipe fitting 113, and the fourth interface 104 is connected with a third pipe fitting 113. Four pipe pieces 114, the end of the first pipe piece 111 away from the first interface 101 is connec...

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Abstract

The invention discloses a pipeline gas sealed sampling method. The method includes the steps of: 1. conveying a material in a process pipe to a material inlet flange through a pump outlet pipe, wherein a cross changeover four-way valve has a first port, a second port, a third port and a fourth port; 2. at the time of sampling, wringing the cross changeover four-way valve by 90 degrees to a sampling position, using the fresh material for replacement and cleaning of a sampling steel cylinder, and closing a steel cylinder outlet needle valve and a steel cylinder inlet needle valve to complete sampling of the sampling steel cylinder; 3. then wringing the cross changeover four-way valve to a circulation position for circulation; and 4. opening an emptying valve, releasing the pressure in a first quick coupling and a second quick coupling at two ends of the sampling steel cylinder to a torch for recovery, and closing the emptying valve when the pressure is released to zero, thus finishing sampling. The method provided by the invention is simple and convenient for operation, and can avoid misoperation.

Description

technical field [0001] The invention relates to a method for airtight sampling of pipeline gas. Background technique [0002] At present, the closed sampler has been adopted in the pipeline sampling of the quality inspection and analysis system in the petrochemical field at home and abroad. There are two most common types of closed samplers: liquid sampling and gas sampling. The container usually used for liquid sampling is a closed glass bottle, and the container usually used for gas sampling is a closed steel cylinder. [0003] The material in the process pipeline is transported by the pump to the inlet flange of the gas-tight sampler, circulated through the pipe valve inside the gas-tight sampler, and then the fresh material is sampled from the steel cylinder, which can usually be completed by operating six sampling valve groups. The operation is cumbersome and easy to misuse. [0004] Based on the above problems, it is necessary to provide a method for airtight sampli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
Inventor 陈星霖王志学宋维政李跟臣侯军祥钮霞王茜吕亚辉林红梅孟宪玲王巍李强
Owner 北京永兴精佳仪器有限公司
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