Solid dust sampling probe for use in pipeline

A technology for sampling probes and solids, applied in the direction of sampling devices, etc., can solve problems such as failure to work, errors, and pressure values ​​that are not average values

Active Publication Date: 2005-05-25
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

But there is one pressure measuring hole for internal and external pressure, not only the pressure value taken is not the average value, there is a large error, the measurement accuracy is about 5-7%, and one pressure measuring hole is also very easy to block , resulting in failure to work, had to shut down for maintenance
Although this kind of sampling probe can be introduced and applied to gas pipelines, its shortcomings must be solved

Method used

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  • Solid dust sampling probe for use in pipeline
  • Solid dust sampling probe for use in pipeline
  • Solid dust sampling probe for use in pipeline

Examples

Experimental program
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Embodiment

[0007] Embodiment: sampling probe structure such as figure 1 shown. The inner diameter of the sampling probe 1 is 6mm, the inner diameter of the diffuser section is 6.7mm, and the outer diameter is 20mm; the inner and outer pressure ring chambers 4 and 5 are 3mm wide and 2mm high, the inner and outer pressure holes 6 and 8 are 1mm in diameter, and the pressure measuring holes The diameter of 7 and 9 is 2mm, the diameter of pressure pipe 2 and 3 is 8mm, and the wall thickness is 4mm.

[0008] The technical parameters of the sampling device designed in this way are: non-uniform velocity coefficient 3 , The measurement error is less than 5%.

[0009] In the present invention, because the expansion section, the inner and outer pressure ring chambers 4, 5 and the inner and outer pressure taking tubes 2, 3 are added to the sampling inner tube of the sampling probe 1, isokinetic sampling can be realized, and the equipment is very simple. Moreover, the disturbance to the fluid in th...

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Abstract

The solid dust sampling probe in natural gas pipeline is characterized by that in the sampling probe whose front end is made into the form of straight hook and in the pipe wall of diffusion section an internal pressure ring cavity communicated with sampling probe interior by means of several internal pressure holes and an external pressure ring cavity communicated with sampling probe exterior by means of several external pressure holes, said internal pressure ring cavity and external pressure ring cavity are respectively equipped a pressure-measuring hole communicated with pressure-taking pipe.

Description

technical field [0001] The invention is a probe for sampling solid dust in a gas pipeline. Covers piping systems and areas of measurement not covered by other classes. Background technique [0002] Because solid impurities such as rust and quartz sand in the natural gas pipeline will seriously wear the valves, instruments and large compressors on the pipeline, thus affecting the safe and reliable operation of the entire pipeline, and the wear of the instruments will also cause large measurement errors in natural gas. Therefore, dust removal devices are installed on the gas pipeline. At present, the gas pipeline generally uses a cyclone separator to remove particles with a larger diameter, and an additional filter core filter is added for occasions with high requirements for gas purification. Since the separator and filter work under high pressure, the conventional isokinetic sampling method for evaluating the separation performance is not suitable for high pressure conditi...

Claims

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Application Information

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IPC IPC(8): G01N1/20
Inventor 姬忠礼付松广陈鸿海陈红生肖峰孙齐
Owner PIPECHINA SOUTH CHINA CO
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