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Gas flow standard device

A standard device, gas flow technology, applied in measurement devices, test/calibration devices, liquid/fluid solid measurement, etc., can solve the problems of unsatisfactory detection accuracy, poor device accuracy, and high environmental requirements, and achieve detection accuracy. and calibration work efficiency, high accuracy, good repeatability

Inactive Publication Date: 2009-11-11
孙永岐
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Problems solved by technology

The main disadvantage of this method is that the accuracy of the device itself is poor, and the requirements for the environment are high, and the detection accuracy is not satisfactory.

Method used

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  • Gas flow standard device

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0020] Such as figure 1 As shown, the present invention includes a surge tank 1 whose output end is used to connect a vacuum pump, and whose input end is connected with a nozzle collecting pipe 15 . The nozzle collection pipe 15 is correspondingly connected to the multiple nozzles 4 on the nozzle container 11 through a plurality of first pneumatic ball valves 14 and the cylinder assembly, and a pressure collection point 16 and a temperature collection point 13 are respectively arranged on the nozzle collection pipe 15 and the nozzle container 11 .

[0021] The input end of the nozzle container 11 is connected to the first output end of the standard meter collection pipe 10 through the second pneumatic ball valve 12 . The second output end of the standard meter collection pipe 10 is connected with the induced draft fan through the pipeline 3 a...

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Abstract

The invention discloses a gas flow standard device. The input end of a pressure-stabilizing tank (1) is connected with a nozzle collecting tube (15) which is correspondingly connected with a plurality of nozzles (4) on a nozzle container (11); the input end of a nozzle container (12) is connected with a first output end of a standard meter influx tube (10), and a second output end of the standard meter influx tube (10) is connected with a draught fan; one or more standard turbine flowmeters (5) are connected in parallel between the standard meter influx tube (10) and a detected meter influx tube (9), and the input end of the detected meter influx tube (9) is connected with one or more meter clamps (8) for mounting detected meters. A mode of combining the sound-velocity nozzles and the standard turbine flowmeters is adopted so as to exert the advantages of high stability and good repetitiveness of the sound-velocity nozzles and exert the advantages of high precision and wide measuring range of each standard turbine flowmeter.

Description

technical field [0001] The invention relates to a calibration device for detecting the accuracy of a gas flow meter. Background technique [0002] The current calibration method of the gas flowmeter generally adopts the following method. The first way: connect the meter under test and the standard meter in series for detection and calibration. The main disadvantage of this method is that one tested meter corresponds to one standard meter. When the type of the tested meter changes greatly, the standard meter cannot meet the flow range, that is, the selectivity of the flow point is poor, not flexible enough, and the range is small. This method also has the disadvantages of high manufacturing cost and high detection cost. The second way: gas bell calibration device method. The main disadvantage of this method is that the accuracy of the device itself is poor, and the requirements for the environment are high, and the detection accuracy is not satisfactory. Contents of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F25/00
Inventor 孙铭泽孙永岐
Owner 孙永岐
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