Density correction type multi-parameter flowmeter and density correction method

A density correction and multi-parameter technology, which is applied in the direction of volume measurement, liquid/fluid solid measurement, volume/mass flow generated by mechanical effects, etc., can solve the problems of inconvenient installation, low measurement accuracy and high uncertainty, and achieve the goal of installation Simple and convenient, high measurement accuracy and strong practicability

Inactive Publication Date: 2014-09-10
HANGZHOU GUANYI FLUID TECH
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  • Abstract
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Problems solved by technology

[0005] The extraction and utilization of coal mine gas has become a necessity. However, due to the harsh environment of coal mine gas extraction, with high negative pressure, high humidity, many solid impurities, large flow range, and low flow rate, it is currently used for coal mine gas drainage The current flowmeters mainly include orifice plate flowmeter, precession vortex flowmeter, V-cone flowmeter, and multi-parameter gas drainage meter. None of the above types are fully applicable to the coal mine gas drainage environment, and there are more or less Certain defects: the orifice flowmeter is a traditional flowmeter with small flow range, large pressure loss, and inconvenient installation. The precession vortex flowmeter is mainly used for gas drainage branch pipelines, for drilling holes that are easy to block, and for main pipes Excessive pressure loss, V-cone flowmeter, large pre

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Example Embodiment

[0012] A density-corrected multi-parameter gas flowmeter of this embodiment, such as figure 1 As shown, it includes an instrument housing 1 with a pipeline through hole in the middle. The instrument housing 1 is equivalent to a straight pipe section of a pipeline, consisting of a flange and a pipeline, and is mainly used to carry various sensors and connect with the gas drainage pipeline. A flow sensor holder 2, a sensor holder 3 and a concentration sensor 4 are installed on the instrument housing 1; a flow sensor 5 and a differential pressure transmitter 9 are installed on the flow sensor holder 2, and The measuring end of the flow sensor 5 is located in the pipe through hole in the middle of the instrument shell 1, which adopts a plug-in connection and is directly inserted into the instrument shell 1 to the bottom of the pipe, so that the flow sensor probe passes through the entire fluid section, making it The average value of the flow velocity profile can be obtained to reflec

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Abstract

The invention discloses a density correction type multi-parameter flowmeter and a density correction method. The flowmeter comprises an instrument shell with a middle pipeline through hole. A flow sensor fixing rack, a sensor fixing rack and a concentration sensor are mounted on the instrument shell. A flow sensor and a micro differential pressure transmitter are mounted on the flow sensor fixing rack. The measuring end of the flow sensor is located in the middle pipeline through hole of the instrument shell. A flow sensor probe is mounted on the flow sensor. A pressure sensor, a temperature sensor and a flow totalizer are mounted on the sensor fixing rack. The measuring ends of the pressure sensor, the temperature sensor and the flow totalizer are respectively located in the middle pipeline through hole of the instrument shell. The measuring end of the concentration sensor is located in the middle pipeline through hole of the instrument shell. The density correction type multi-parameter flowmeter is simple and convenient to mount, capable of performing multi-parameter measuring, low in pressure loss, capable of correcting density, high in measuring precision and high in practicality.

Description

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Claims

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Application Information

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Owner HANGZHOU GUANYI FLUID TECH
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