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Combined platinum film gas flow measuring method and flow meter

A gas flow meter, platinum film technology, applied in indirect mass flow meters, mass flow measurement devices, etc., can solve the problems of small measurement range, long response time, etc., and achieve the advantages of wide range ratio, simple structure and obvious economic benefits. Effect

Inactive Publication Date: 2008-10-22
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thermal distributed thermal flowmeters are heated outside the measuring tube, which can only measure small flow rates, and the measurement range is relatively small; insertion-type thermal flowmeters have two probes for speed and temperature inserted into the measuring tube, and because they have protective steel sleeves, the response longer time

Method used

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  • Combined platinum film gas flow measuring method and flow meter
  • Combined platinum film gas flow measuring method and flow meter

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Embodiment Construction

[0021] As shown in Fig. 1, Fig. 2 and Fig. 3, the present invention includes a detection rod 5 and a signal acquisition control display unit 10; one or more flow detection windows 4 are opened on the detection rod 5, and the detailed structure of the detection rod is shown in Fig. 3 As shown in Figure 3, only one flow detection window is drawn, each detection window 4 is fixedly installed with a combined platinum film probe 8, and the signal of each combined platinum film probe 8 is connected to the signal acquisition control display unit through the detection rod for processing .

[0022] A flow probe 13 and a temperature probe 12 are integrated on the combined platinum film probe 8 . Its signal lead-out line 11 is connected with the control processing circuit board 3 through the middle of the detection rod 5, the signal lead-out line 11 is not drawn in Fig. 1 and Fig. 2, the control processing circuit board 3 is installed in the signal acquisition control display unit shell ...

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Abstract

The invention discloses a method and a flow meter for measuring combined platinum-film gas flow. A detecting rod is adopted to be inserted in a measuring pipe in diameter direction. The detecting rod is fixed with one or a plurality of platinum-film probes, which integrate a combination of a flow probe and a temperature probe. Every probe can feel the flow and the temperature signals of the gas. The quality flow of the gas can be obtained when the flow and temperature signals are acquired and processed. The flow value and the temperature value can be displayed and remotely sent. The combined platinum-film gas flow meter has the advantages of simple structure, low investment, high precision, little press loss, wide range ratio (being capable of reaching to about one hundred times), almost zero flux lower limit, etc. No such flow meter with simple structure and perfect comprehensive performance exists in gas flow detecting meters. Therefore, the economic benefits are very obvious. The meter is equipped with an integrated structure and multi-parameter measuring functions of flow, temperature, etc.

Description

technical field [0001] The invention relates to flow measurement technology, in particular to a combined platinum film gas flow meter. Background technique [0002] At present, the methods and instruments used for gas flow detection generally include turbine flowmeters, vortex flowmeters, precession vortex flowmeters, differential pressure flowmeters and volumetric flowmeters. Although these instruments can meet general industrial applications, there are still many deficiencies. First of all, differential pressure flowmeters, precession vortex flowmeters, and volumetric flowmeters have large pressure losses and serious waste of energy. Turbine flowmeters have moving parts, and their working life is short, requiring careful maintenance; vortex flowmeters The precession vortex flowmeter and the precession vortex flowmeter are susceptible to air pulsation interference; secondly, their measurement range is relatively small, the differential pressure flowmeter is generally about...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/86
Inventor 梁国伟王芳赵伟国郑永军
Owner CHINA JILIANG UNIV
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