Dynamic odor measurement instrument

A measuring instrument and odor technology, which is applied in the field of dynamic gas measuring devices, can solve the problems of inapplicability, no mixing device for gas path mixing, etc., and achieves the effects of convenient operation, improved reliability and reasonable structure

Active Publication Date: 2009-07-01
TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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  • Description
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AI Technical Summary

Problems solved by technology

[0004] The device involving dynamic dilution that can be found abroad is US Patent 5767385. The device is characterized by providing four people to judge the presence or absence of odor on the instrument at the same time. Domestic standard three-point comparative stinky bag method

Method used

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Embodiment Construction

[0040] The specific implementation, structure, features and effects provided by the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0041] See Figure 1~5, according to a kind of dynamic odor measuring instrument provided by the present invention, a kind of dynamic odor measuring instrument comprises a housing 56 and a measurement and control gas circuit installed in the housing, and the measurement and control gas circuit is divided into three gas circuits, wherein the first The gas path is the reference gas path, through the pipeline, the gas source inlet 54 is sequentially connected to the main shut-off valve 4 and the pressure stabilizing valve 1, and the stabilizing valve 1 is respectively connected to two shunt shut-off valves 34, 35, and the two shunt shut-off valves The valves are sequentially connected to regulating valves 38, 33, rotameters 37, 32 and reference gas outlets 36, 31; the seco...

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Abstract

The invention relates to a dynamic odor tester, comprising a shell and a test and control gas circuit mounted in the shell, wherein the test and control gas circuit is divided into three gas paths; the first gas path is a reference gas path; the second gas path is a mixed gas path; the third gas path is a tested gas path; the three gas paths are connected with a stop valve, a constant pressure valve, a rotor flux meter, a mass flux control meter, a venture mixing tube, a rotary mixing chamber, a reference gas outlet and a mixed gas outlet via pipelines and a gas source access port. The dynamic odor tester utilizes dynamic dilution and parallel design, and the negative pressure mixing mechanism in the venture mixing tube, and realizes dynamic gas distribution via the high speed rotary mixing tank. The dynamic odor tester has reliable performance, and can meet domestic three-point comparison odor bag method and European osmometer method. The dynamic odor tester can be used to test the strength and concentration of odor gas sample or the gas sample of peculiar smell in exhaust stack or environment gas, while the gas sample contains a sample containing one odor material and a composite odor sample containing at least two odor materials.

Description

technical field [0001] The invention relates to a dynamic gas measuring device, in particular to a dynamic odor measuring instrument. It is used to measure the strength and concentration of odorous or peculiar smell gas samples in the exhaust pipe or in the environment. The gas samples include samples containing one malodorous substance and composite odor samples containing more than two kinds of malodorous substances. Background technique [0002] In many odor-generating industries such as environmental protection, fragrance manufacturing and daily chemical industry, it is often necessary to test the intensity and concentration of odorous or odorous gases. Every country in the world has its own set of odor test methods. At present, China, Japan and South Korea use the same static dilution method, while European and American countries use the dynamic dilution method. The odor test experiment in my country is based on the three-point comparative experimental method introduce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/38G01N33/00
Inventor 邹克华宁晓宇刘咏耿静韩萌王亘王连生王元刚李昌建
Owner TIANJIN UNITED ENVIRONMENTAL ENG DESIGN
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