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Fuel gas metering method and device based on energy metering

A technology of gas metering and energy, which is applied in mass flow measurement devices, indirect mass flow meters, etc., and can solve problems such as inaccurate measurement

Active Publication Date: 2014-01-29
CHENGDU QIANJIA TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the inaccurate measurement of gas metering based on volume in the prior art, to provide a gas metering method based on energy metering, and to provide a gas metering device based on energy metering

Method used

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  • Fuel gas metering method and device based on energy metering
  • Fuel gas metering method and device based on energy metering
  • Fuel gas metering method and device based on energy metering

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with test examples and specific embodiments. However, it should not be understood that the scope of the above subject matter of the present invention is limited to the following embodiments, and all technologies realized based on the content of the present invention belong to the scope of the present invention.

[0031] refer to figure 1 , this embodiment provides a gas metering method based on energy metering, including the following steps:

[0032]Step 1: Use the gas chromatograph to measure the composition of the natural gas, and the gas metering device receives the natural gas composition data measured by the gas chromatograph. Implement this step and can adopt two kinds of implementation modes, and wherein a kind of implementation mode is to adopt the gas metering device that is provided with the gas chromatograph analyzer based on MEMS, the gas chromatograph analyzer passes through I ...

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Abstract

The invention discloses a fuel gas metering method based on energy metering. The fuel gas metering device receives natural gas component data transmitted by a gas chromatography analyzer and determines real volume heating quantity of natural gas according to the natural gas components, real-time pressure and real-time temperature; then the natural gas use amount Vt under the actual temperature and pressure is metered and converted into fuel gas flow Vn under standard condition; finally, according to Vn, the energy E of the natural gas is determined, and energy metering is finished. The invention further provides a fuel gas metering device based on the energy metering and used for achieving the method. The fuel gas metering device receives the natural gas component data transmitted by the gas chromatography analyzer, the real volume heating quantity of the natural gas is calculated according to the natural gas components and the real-time temperature and pressure, the energy of the natural gas is calculated by combining natural gas volume flow, and energy metering is achieved. The method and device provides a novel metering mode which is reasonable and accurate.

Description

technical field [0001] The invention relates to the technical field of gas metering, in particular to a gas metering method based on energy metering and a gas metering device based on energy metering. Background technique [0002] Natural gas is clean and efficient energy, so more and more urban residents use natural gas. A gas meter is a device that measures the gas consumption of a user. The current natural gas metering devices and household gas meters (leather mold meters) all measure the volume flow under the working conditions (actual working conditions). However, due to the compressibility of natural gas, the volume flow rate under different temperature and pressure conditions Volume metering is different, resulting in inaccurate gas metering. At present, industrial and commercial users use flowmeters in conjunction with volume correctors to convert the volume of natural gas to a standard state (in China, it is a standard atmospheric pressure, 101.325KPa and 20 degre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F1/86
Inventor 刘勋赵勇雷新民
Owner CHENGDU QIANJIA TECH CO LTD
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