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V-cone household natural gas flow calculation method and device

A flow calculation, natural gas technology, applied to the volume/mass flow generated by mechanical effects, and the detection of fluid flow by measuring the pressure difference, which can solve the problem of lack of flow calculation methods for measuring household natural gas.

Pending Publication Date: 2019-05-17
FATRI XIAN TESTING & CONTROL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the defect in the prior art that lacks a method for calculating the flow rate of domestic natural gas based on a MEMS sensor-based V-cone flowmeter, thereby providing a method and device for calculating the flow rate of V-cone domestic natural gas

Method used

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  • V-cone household natural gas flow calculation method and device
  • V-cone household natural gas flow calculation method and device
  • V-cone household natural gas flow calculation method and device

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Embodiment 1

[0034] An embodiment of the present invention provides a V-cone household natural gas flow calculation method, such as figure 1 As shown, the V-cone domestic natural gas flow calculation method includes:

[0035] Step S1: Obtain standard data of natural gas under standard reference conditions. Specifically, the standard data can be obtained according to "Natural Gas Density and Fluid Coefficient Calculation Method", national standards, and oil and gas industry standards.

[0036] Step S2: Determine the first relationship between the volume flow of natural gas under standard reference conditions and the differential pressure range of the standard orifice plate according to the volume flow calculation formula and standard data of the V-cone flowmeter. Specifically, the standard orifice differential pressure range is the pressure difference generated when the natural gas flow passes through the standard orifice.

[0037] Step S3: According to the parameter information of the pres...

Embodiment 2

[0110] An embodiment of the present invention provides a V-cone domestic natural gas flow calculation device, such as image 3 As shown, the V-cone domestic natural gas flow calculation device includes:

[0111] Standard data acquisition module 1 is used to acquire standard data of natural gas under standard reference conditions. For details, refer to the relevant description of step S1 in Embodiment 1.

[0112] The first relationship determining module 2 is used to determine the first relationship between the volume flow of natural gas under standard reference conditions and the standard orifice differential pressure range according to the volume flow calculation formula of the V-cone flowmeter and standard data. For details, refer to the relevant description of step S2 in Embodiment 1.

[0113] The second relationship determination module 3 is used to determine the second relationship between the volume flow of natural gas under the V-cone flowmeter and the differential pr...

Embodiment 3

[0130] An embodiment of the present invention provides a non-transitory computer storage medium, the computer storage medium stores computer-executable instructions, and the computer-executable instructions can execute the V-cone household natural gas flow calculation method in any of the above-mentioned method embodiments, wherein the above-mentioned The storage medium can be a magnetic disk, an optical disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a flash memory (Flash Memory), a hard disk (HardDisk Drive, abbreviation: HDD) or solid-state hard drive (Solid-State Drive, SSD), etc.; the storage medium may also include a combination of the above-mentioned types of memory.

[0131] Those skilled in the art can understand that the implementation of all or part of the processes in the above method embodiments can be completed by instructing related hardware through a computer program, and the program can be stored in a comput...

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Abstract

The embodiment of the invention provides a V-cone household natural gas flow calculation method and device. The V-cone household natural gas flow calculation method includes the steps that standard data of natural gas under the standard reference condition are obtained; the first relationship between the volume flow of the natural gas under the standard reference condition and the differential pressure range of a standard pore plate is determined according to a volume flow calculation formula of a V-cone flowmeter and the standard data; the second relationship between the volume flow of the natural gas under the V-cone flowmeter and the differential pressure range of the V-cone flowmeter is determined according to preset parameter information of the V-cone flowmeter and the first relationship; and according to the second relationship and preset parameter values, the differential pressure range of the V-cone flowmeter is determined through a secant method; and the volume flow of the natural gas under the V-cone flowmeter is determined according to the second relationship and the differential pressure range of the V-cone flowmeter. By implementing the V-cone household natural gas flow calculation method, calculation of the flow of the household natural gas based on the V-cone flowmeter is realized, and the accurate data basis is provided for application of the V-cone flowmeter toa household gas meter.

Description

technical field [0001] The invention relates to the field of gas flow detection, in particular to a V-cone household natural gas flow calculation method and device. Background technique [0002] The V-cone flowmeter uses a V-shaped cone coaxially installed in the pipeline to gradually throttle the fluid to the inner wall of the pipeline, and measures the flow rate by measuring the differential pressure before and after the V-shaped inner cone. At present, the traditional V-cone flowmeter is widely used in the field of industrial natural gas. Due to the limitations of the traditional V-cone flowmeter in the field of use, it cannot be well applied. Because the flow rate of natural gas pipelines in the civilian field is small and the static pressure of the pipelines is low. Due to the limitation of the differential pressure sensor, the traditional V-cone flowmeter cannot measure small differential pressure changes, so it cannot be well adapted to this scenario. Later, people ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/36
Inventor 聂泳忠赵阳李红星
Owner FATRI XIAN TESTING & CONTROL TECH CO LTD
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