Total hydrocarbon tester having on-line attenuation function

A measuring instrument and functional technology, applied in the field of total hydrocarbon measuring instrument, can solve the problems of inaccurate dilution ratio, difficult discovery, difficult adjustment of gas path resistance, etc., to avoid flameout of the detector, improve efficiency, and avoid filter material penetration Effect

Inactive Publication Date: 2016-02-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practice, it is found that the filter activated carbon is easy to be saturated and difficult to find, the gas path resistance is difficult to adjust, and the dilution ratio is not accurate, etc.

Method used

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  • Total hydrocarbon tester having on-line attenuation function

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Embodiment Construction

[0018] combined with figure 1 The specific embodiment of the present invention is described further:

[0019] A total hydrocarbon analyzer 1 with an online dilution function includes a sampling tube 7, a pump 3, a hydrogen flame ion detector 2, and a compressed air bottle 4 and a mixed gas chamber. The mixed air chamber has two input ends, one input end is connected with the sampling pipe, the other input end is connected with the air pipe, the air pipe is connected with the compressed air bottle, and the air flow control device 5 is also arranged on the air pipe. The output end of the mixed gas chamber is connected to the pump through the mixed gas flow control device, and the pump is connected to the hydrogen flame ion detector.

[0020] The sampling pipe inputs the sample gas into the mixed gas chamber, and the clean air from the compressed air bottle enters the mixed gas chamber through the air flow control device to mix with the sample gas. The air flow control device co...

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Abstract

The invention discloses a total hydrocarbon tester having the on-line attenuation function. The tester comprises a sampling pipe, a pump, a hydrogen flame ionization detector, a compressed air bottle and a mixed gas chamber. An input end of the mixed gas chamber is connected with the sampling pipe, the other input end of the mixed gas chamber is connected with an air pipe, and the air pipe is connected with the compressed air bottle and provided with an air flow control device. The output end o the mixed gas chamber is connected with the pump through a mixed gas flow control device, and the pump is connected with the hydrogen flame ionization detector. Sample gas enters the mixed gas chamber, is mixed with clean air and reaches the hydrogen flame ionization detector under the action of the pump, and the hydrocarbon content of the sample gas is tested. The mixed gas flow control device and the air flow control device cooperate to control the proportion of the sample gas to the clean air, and the on-line attenuation function is achieved. By means of the total hydrocarbon tester, the concentration of hydrocarbon in the sample gas entering the hydrogen flame ionization detector is lowered in a quantitative mode, and shutdown of the tester due to overload or insufficient oxygen in the sample gas or other reasons is avoided.

Description

technical field [0001] The invention relates to a total hydrocarbon detector, in particular to a total hydrocarbon detector with an online dilution function. Background technique [0002] During the operation of petrochemical equipment, hydrocarbon leakage occurs due to failure of sealing materials and other reasons. It is currently a relatively common practice to use a total hydrocarbon detector to detect the leakage of the equipment. The commonly used total hydrocarbon analyzer is composed of sampling tube, pump, hydrogen flame ion detector and other supporting parts. During the detection process, because the sampling port is in contact with the high concentration of hydrocarbon components in the leaked gas or because the matrix of the leaked gas is an inert gas such as nitrogen, the hydrogen flame ion detector is often turned off instantly, requiring a long period of cleaning and re-ignition, reducing the detection efficiency. [0003] At present, the existing solutions...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62
Inventor 魏新明李明哲马明肖寒高翔孙晓英姜素霞邹兵
Owner CHINA PETROLEUM & CHEM CORP
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