Non-equilong sampling backflow double-tube sampling probe

A sampling probe, non-equal-length technology, applied in the direction of sampling, sampling device, measuring device, etc., can solve the inconvenience, increase the safety and convenience of container fumigation gas, and achieve the effect of avoiding inaccurate detection

Inactive Publication Date: 2017-10-20
江苏舒茨测控设备股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention will solve the inconvenience of using two probes, avoid the inhalation of toxic gas when using a single common probe, and increase the safety and convenience of container fumigation gas detection, and propose a non-equal-length sampling return flow Double Tube Sampling Probe

Method used

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  • Non-equilong sampling backflow double-tube sampling probe
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  • Non-equilong sampling backflow double-tube sampling probe

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Embodiment

[0025] Such as figure 1 As shown, the present invention adopts a double-tube probe, one pipeline is used for sampling intake air, and the other pipeline is used for backflow exhaust gas. At the same time the intake pipe section is shorter than the return exhaust pipe. The non-equal-length sampling and return double-tube sampling probe includes a probe main body 1, and a fine filter element 4 is also arranged inside the probe main body 1; it also includes two closely parallel sampling inlet pipes 2, return air outlet pipes 3, and return The outflow air pipe 3 is longer than the sampling air inlet pipe 2, and its length difference is greater than the wall thickness of the measured box or wall; the sampling ends of the sampling air inlet pipe 2 and the backflow air pipe 3 are triangular tips. The sampling air inlet pipe interface 7 is connected to the sampling air inlet pipe 2 , and the backflow outflow pipe interface 6 is connected to the backflow outflow pipe 3 through the pro...

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PUM

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Abstract

The invention discloses a non-equilong sampling backflow double-tube sampling probe. The probe comprises a probe main body, and also comprises a gas sampling and feeding tube and a gas returning and discharging tube which are closely arranged in parallel, the gas returning and discharging tube is longer than the gas sampling and feeding tube, and the length difference is greater than the wall thickness of a measured box body or wall body; and the sampling ends of the gas sampling and feeding tube and the gas returning and discharging tube are tip ends, the internals of the gas sampling and feeding tube and the gas returning and discharging tube are hollow pipelines, and tube walls adjacent to the tip ends are respectively provided with one or more gas inlet / outlet for preventing the obstruction of the tips. One of the pipelines of the double-tube probe is used for sampling and feeding gas, the other pipeline is used for returning and discharging the gas, the gas returning and discharging tube is longer the gas sampling and feeding tube, the length different is greater than the wall thickness of the measured box body or wall body, and the gas feeding tube part is shorter than the gas returning and discharging tube. When detection ends, one part of the probe is pulled out to make the gas inlet exposed in air in order to draw clean air and clean a detector and the probe, and the gas returning and discharging tube still continuously discharges toxic gas in the box body.

Description

technical field [0001] The invention belongs to the field of gas detection, and more specifically relates to a non-equal-length sampling backflow double-tube sampling probe. Background technique [0002] The environmental protection department or the security inspection department detects how much gas remains in the closed environment and whether it is safe to open. For example, for container detection, it is necessary to use a sampling tube to introduce the residual gas in the container into the gas detector for detection. Sampling the fumigant gas in the container A sampling probe is required for testing. The traditional method is to use ordinary probes without backflow function. Using ordinary probes without backflow function will easily cause equipment operators to inhale toxic gases, and the equipment cannot be cleaned in time, resulting in errors when they are used again. [0003] Patent CN104568525A discloses a sampling pipeline structure. The sampling pipeline struc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/22
CPCG01N1/2226
Inventor 李新华何安德陈默
Owner 江苏舒茨测控设备股份有限公司
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