Built-in type temperature and pressure compensation multidirectional gas roots flow meter

Abstract

The invention provides a built-in type temperature and pressure compensation multidirectional gas roots flow meter comprising a housing, a rotary positioning plate, a counter and an integrating instrument. Whether the gas roots flow meter is vertically or horizontally installed, the counter and an intelligent display can be all at a horizontal state, so numbers of the flow meter can be smoothly read and conveniently recorded; perfection of a personalized design can be obtained; the counter and the intelligent display can be independently sampled; and more accuracy can be achieved with a comparison between the counter and the intelligent display and reliable metering can be realized.

Description

technical field [0001] The invention relates to a gas flowmeter, in particular to a built-in temperature and pressure compensation multi-directional gas waist wheel flowmeter. Background technique [0002] It is well known that the density of all gases, including natural gas and city gas, will change with the change of its pressure and temperature. According to this physical characteristic, in order to accurately measure the flow through the pipeline, especially for the measurement of trade settlement, and to protect the interests of both consumers and producers, it is necessary to measure the temperature of the medium while measuring the flow value And the pressure value, the real flow value of the medium through the pipeline "standard condition flow" is obtained by calculation. Although the gas waist wheel flowmeters and gas turbine flowmeters currently on the market have realized the "standard flow rate" of temperature and pressure automatic correction or compensation in...

AI Technical Summary

Problems solved by technology

Its disadvantages are: (1) The pressure-taking port, temperature-measuring port, pressure sensor, temperature sensor, etc. are installed outside the flow shell, not only the parts are easily damaged by aging, but also easily damaged by others, which brings many inconveniences to users. Due to safety factors, users and the gas management department are deeply helpless; (2) Since the pressure-taking port, temperature-measuring port, pressure sensor, temperature sensor, etc. are installed outside the flow shell, they cannot effectively shield other signals such as external magnetic fields interference, its anti-interference ability is poor, the reliability and accuracy of the transmitted signal cannot be guaranteed after being interfered by the outside world, and no solution has been found so far; Inconvenience, and the manufacturer's packaging and transportation are also extremely inconvenient; (4) There are many parts, not only the manufacturing cost is high, but also the overall technical performance and appearance quality of the product are directly affected

[0003] In addition, the display part of the gas waist wheel flowmeter on the market is fixedly connected with the casing and cannot be rotated, so it can only be installed vertically

If you encounter an environment that requires horizontal installation, you will not be able to meet the installation requirements; moreover, there was only a single smart flowmeter or a single mechanical flowmeter before, but today's market has irregular and diverse needs, so the function of the flowmeter is required Diversification to meet different needs

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