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Gas production pipe for eliminating flue negative pressure

A gas extraction pipe and flue technology, which is applied to the sampling device and other directions, can solve the problems of low gas extraction flow and low detection indication value.

Inactive Publication Date: 2009-10-21
张学平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Will this measure work? From the above analysis, it can be known that the high-power air pump can extract gas even in the high negative pressure flue, but the gas production flow rate must be lower than that under the condition of no negative pressure during calibration.
And as long as the gas flow rate decreases, the detection value must be low

Method used

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  • Gas production pipe for eliminating flue negative pressure
  • Gas production pipe for eliminating flue negative pressure
  • Gas production pipe for eliminating flue negative pressure

Examples

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Embodiment Construction

[0038] According to Figure 3, combine the return air pipe ⑤ on the sampling gun (such as the "double pipe" structure with the inner and outer pipes nested together) and insert it into the flue measuring hole, or lay it fixedly, or temporarily connect it to the flue measuring hole and the exhaust port of the tester between. The negative pressure of the flue produces a "back-drawing force" F on the flue gas inlet ① and the flue gas outlet ⑥ at the same time. In the connecting pipe formed by the gas extraction pipe ② and the gas return pipe ⑤, these two forces act on the two ends of the air pump ③ and cancel each other out. When the air pump ③ is started, it is only necessary to overcome the same pipeline resistance when the tester is calibrated in the laboratory, effectively ensuring "air flow rate = calibrated flow rate" and avoiding low measurement indications caused by negative pressure.

[0039] The present invention has been used in conjunction with my utility model patent...

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Abstract

The invention relates to a gas production pipe for eliminating flue negative pressure, in particular to a pipe leading flue negative pressure stressed by two ends of a smoke sampling extraction pump to be always in a counteract state.

Description

Technical field [0001] The invention relates to a flue gas sampler for sampling flue gas from a fixed pollution source in the field of environmental monitoring, a flue gas sampler for flue dust sampling, a flue gas sampler, a flue gas analyzer, or a continuous monitoring system for flue gas discharged from a fixed pollution source, especially a gas collection pipe for eliminating negative pressure in a flue road. Background technique [0002] At present, the flue gas samplers, flue gas samplers, flue gas analyzers, or continuous monitoring systems for flue gas emissions from fixed pollution sources (hereinafter collectively referred to as "testers") used in the industry must be connected from the flue gas discharge pipe (referred to as " The flue gas is extracted from the measuring hole of the flue". In many cases, the flue uses an induced draft fan to exhaust smoke, resulting in negative pressure at the measuring hole at the front end of the induced draft fan. The gas col...

Claims

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Application Information

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IPC IPC(8): G01N1/24
Inventor 张学平
Owner 张学平