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Combined platinum film gas flow measuring method and flow meter

A gas flow meter and gas flow technology, applied in the direction of indirect mass flow meter, mass flow measurement device, etc., can solve the problems of long response time and small measurement range, and achieve wide range ratio, high precision and obvious economic benefits Effect

Inactive Publication Date: 2008-02-13
CHINA JILIANG UNIV
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  • Summary
  • 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 combined platinum film gas flow measurement method and a flow meter. The detection rod is inserted into the measuring pipe from the diameter direction, and one or more platinum film probes integrating a flow probe and a temperature probe are fixedly installed on the detection rod, and each probe can sense the gas flow and temperature signals at the same time . The flow and temperature signals are collected and processed to obtain the mass flow of the gas, and the display and remote transmission of the flow and temperature values ​​are realized. The combined platinum membrane gas flowmeter has the characteristics of simple structure, low investment cost, high precision, small pressure loss, wide range ratio (up to about 100 times), and the lower flow limit is almost zero. Among the gas flow detection instruments, there is no flow instrument with such a simple structure and excellent comprehensive performance, and the economic benefits are very obvious. The instrument has an integrated structure and has multi-parameter measurement functions such as flow and temperature.

Description

technical field [0001] The invention relates to flow measurement technology, in particular to a combined platinum film gas flow measurement method and a flowmeter. 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...

Claims

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Application Information

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Patent Type & Authority Applications(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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