Measuring method for gas production rate in methane project

Abstract

The invention relates to a measuring method for the gas production rate in a methane project in the energy field. By using a sampling hole or other orifices reserved in a methane conveying pipeline, the methane flow rate is measured with a pipeline air speed sensor, methane pressure is measured with a pressure sensor, the methane temperature is measured with a temperature sensor, an instrument carries out measurement continuously and automatically records and stores barometric pressure, the flow is calculated through a formula, and then the gas production rate in the methane project is obtained. A measuring device of the measuring method is formed by a sensor (10), a rubber plug (6), a conical sleeve (5) and a nut (8), wherein the sensor (10) is inserted into the rubber plug (6), the rubber plug (6) is installed in the conical sleeve (5), and the conical sleeve (5) is fixed to an orifice (2) reserved in the methane pipeline (1) through the nut (8). The defects that an existing method is insufficient in precision and low in applicability, and measurement values of the gas production rate are not transversely comparable are overcome; the provided measuring method for the gas production rate in the methane project and the measuring device are simple, operation is convenient, and measurement results are stable, reliable and transversely comparable.

Description

Technical field: [0001] The invention belongs to the field of energy, and in particular relates to a method for measuring gas production of a biogas project. Background technique: [0002] There are two methods for measuring the gas production of existing biogas projects. One method is to use the existing flow meter on the gas transmission pipeline of the project to record the 24-hour gas production; the other method is to use the wet gas storage tank of the biogas project to measure The cross-sectional area of ​​the floating cover of the gas storage tank is converted to the gas production by recording the rising height of the floating cover within a certain period of time. The former cannot meet the needs of flow measurement due to the verification status and accuracy of the existing flowmeter, which leads to doubts about the accuracy of the data; If the project adopts dual-mode gas cabinets or steel tank gas cabinets, this method cannot be used. In particular, the two me...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing biogas project gas production measurement methods, such as insufficient accuracy, poor applicability, and lack of horizontal comparability in the measured value of gas production, and to provide people with a simple measuring device, convenient operation, and A method for measuring gas production in biogas projects with stable and reliable results and horizontal comparability

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