Gas meter measurement method based on temperature and pressure compensation calculation
A technology of temperature pressure and measurement method, applied in the direction of volume measurement, measurement device, measurement capacity, etc., can solve problems such as the large number of residential user meters, the loss of gas companies or users, and actual error changes.
Active Publication Date: 2020-10-27
宁夏隆基宁光仪表股份有限公司
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Problems solved by technology
The membrane gas meters used by most cities for small flow users do not have the function of temperature and pressure compensation. The basic error of the calibration of this membrane gas meter in the standard environment is due to the temperature changes and regional differences in use. When used in a non-standard temperature environment, due to changes in temperature and pressure, the gas volume also changes, and its actual error has changed significantly, and the number of residential user meters is large, which will bring losses to gas companies or users
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Embodiment 1
[0049] Such as figure 1 As shown, the gas meter measurement based on the temperature and pressure compensation calculation method includes a normal metering gas meter (IC card membrane gas meter CG-L-21ZGL manufactured by Ningxia Longji Ningguang Instrument Co., Ltd.) And temperature and pressure components (pressure sensor MS5805 designed by TE), the specific steps are as follows:
[0050] (1) First, the initialization of the gas meter is completed, and the operating parameters of the gas meter are set. Then the gas meter sends a reset command to the temperature and pressure component to complete the initialization of the temperature and pressure component. The temperature and pressure component transmits parameters such as regression coefficients to the gas meter. The gas meter performs data verification and storage on these regression coefficients and internal operating parameters. The regression coefficients are C1, C2, C3, C4, C5, and C6 respectively, representing the pr...
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The present invention provides a temperature and pressure compensation calculation-based gas meter metering method. With the method adopted, the influence of temperature and pressure can be substantially eliminated, so that the metering of a gas meter can be accurately and efficiently realized. The method includes the following steps that: (1) a gas meter of which the metering is normal and a temperature and pressure assembly are selected, data can be transmitted between the gas meter and the temperature and pressure assembly through an integrated circuit bus; and (2) the gas meter sends a reset command to the temperature and pressure assembly, so that six regression coefficients returned by the temperature and pressure assembly to the gas meter are obtained. According to the temperature and pressure compensation calculation-based gas meter metering method of the invention, common membrane type gas meter metering and electronic compensation are combined, so that the metering of the gasmeter can be realized based on the temperature and pressure compensation calculation method, and therefore, a condition that natural gas of the same volume has two different kinds of mass which is caused by the difference of geographical environments and temperature environments can be avoided, and the metering of the gas meter can be realized accurately and efficiently, and losses caused by thedifference to a gas company or user can be greatly reduced.
Description
technical field [0001] The invention relates to a gas meter measurement method based on temperature and pressure compensation calculation. Background technique [0002] In recent years, with the rapid development of the urban gas industry, the demand for residential gas user meters has increased significantly. The membrane gas meters used by most cities for small flow users do not have the function of temperature and pressure compensation. The basic error of the calibration of this membrane gas meter in the standard environment is due to the temperature changes and regional differences in use. When used in a non-standard temperature environment, due to changes in temperature and pressure, the gas volume also changes, and its actual error has changed significantly, and the number of residential user meters is large, which will bring losses to gas companies or users . [0003] In order to solve the difference of the same volume and different quality of gas when the temperatu...
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IPC IPC(8): G01F15/04
Inventor 赵四海李建炜常兴智张军李磊
Owner 宁夏隆基宁光仪表股份有限公司