Pipeline type ultrasonic gas flow tester and testing method
A flow measurement and ultrasonic technology, which is applied in the pipeline ultrasonic gas flow meter and the field of measurement, can solve the problems of low measurement accuracy, poor accuracy, obstruction of drainage pipelines, etc., and achieve the effect of accurate measurement and convenient installation
Pending Publication Date: 2020-03-31
CCTEG CHINA COAL RES INST
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[0002] The flow measurement of the gas drainage pipeline is the basic data for the test of the pre-drainage effect. The flow measurement of the gas drainage pipeline in the coal mine mainly adopts orifice flowmeter, Pitot tube flowmeter, V-cone flowmeter, vortex flowmeter and other methods. There are common problems of low measurement accuracy and poor accuracy under low flow rate conditions. In addition, most flow measurements are based on the principle of differential pressure, which will form certain obstacles to the drainage pipeline and increase the resistance of the pipeline. In order to solve the problem of gas drainage For the flow measurement of pipelines, this application provides a pipeline-type ultrasonic gas flow meter and measurement method. The gas flow meter of this application will not hinder the gas in the pipeline and will not affect normal drainage
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[0027] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not intended to limit the present invention, that is, the described embodiments are only some of the embodiments of the present invention, but not all of the embodiments.
[0028] See attached Figure 1-3 As shown, a pipeline type ultrasonic gas flow measuring instrument, said measuring instrument includes a draft tube 1, a display screen 2, a first flow sensor 3, a second flow sensor 4, a temperature sensor 5 and a microprocessor MUC7, said The display is provided with an integrated circuit board, a battery and a shared serial port for charging data. The battery provides power support for the gas flow meter. The integrated circuit board has a built-in ...
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The invention relates to a pipeline type ultrasonic gas flow tester and a testing method. The tester comprises a flow guide pipe, a display screen, a first flow sensor, a second flow sensor, a temperature sensor and a microprocessor, the display is provided with an integrated circuit board, a battery and a charging data sharing serial port. The battery provides power supply support for the gas flow tester; an MAX35104 time-to-digital conversion chip is arranged in the integrated circuit board; flange plates are arranged at two ends of the diversion pipe; the flow guide pipes are respectively connected with a gas extraction pipe through flange plates; a certain included angle theta is formed between a connecting line of the first flow sensor and the second flow sensor penetrating the gas extraction pipe, and the axis of the flow guide pipe. The pipeline type ultrasonic gas flow measuring instrument can measure the flow of gas in an extraction pipeline for a long time, is convenient to install and accurate in measurement, and does not hinder the gas in the pipeline and influence normal extraction compared with the conventional instrument for measuring the flow by using a differentialpressure principle.
Description
technical field [0001] The invention relates to the technical field of measuring basic parameters of coal seam gas drainage, in particular to a pipeline-type ultrasonic gas flow measuring instrument and a measuring method. Background technique [0002] The flow measurement of the gas drainage pipeline is the basic data for the test of the pre-drainage effect. The flow measurement of the gas drainage pipeline in the coal mine mainly adopts orifice flowmeter, Pitot tube flowmeter, V-cone flowmeter, vortex flowmeter and other methods. There are common problems of low measurement accuracy and poor accuracy under low flow rate conditions. In addition, most flow measurements are based on the principle of differential pressure, which will form certain obstacles to the drainage pipeline and increase the resistance of the pipeline. In order to solve the problem of gas drainage For the flow measurement of pipelines, this application provides a pipeline-type ultrasonic gas flow meter a...
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IPC IPC(8): G01F1/66
CPCG01F1/66
Inventor 霍中刚马建舒龙勇温良苗可彬侯金玲刘香兰刘学张慧杰
Owner CCTEG CHINA COAL RES INST