Measuring device blocking position of gas pipeline and measuring method thereof

A technology for gas pipelines and measuring devices, applied in gas/liquid distribution and storage, pipeline systems, mechanical equipment, etc., can solve the problems of time-consuming and laborious staff experience, increased production costs, and higher requirements.

Inactive Publication Date: 2013-09-04
XI'AN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The former has produced great benefits through the application of gas fields, but there is a problem of a sharp increase in the consumption of methanol. At the same time, the treatment of alcohol-containing sewage also requires additional special processes in the treatment plant, which increases production costs; the latter is difficult to accurately find gas The position where the pipeline is blocked is time-consuming and labor-intensive and requires a high level of experience for the staff

Method used

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  • Measuring device blocking position of gas pipeline and measuring method thereof
  • Measuring device blocking position of gas pipeline and measuring method thereof
  • Measuring device blocking position of gas pipeline and measuring method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0134] The simulated gas in gas line 1 is methane CH 4 , where the known critical parameter of methane is: p c =4596kPa, T c =190.53K;

[0135] The initial pressure value p of the methane gas in the gas pipeline is obtained by measuring the pressure sensor 5 1 200.0kPa;

[0136] At room temperature 20°C, with inner diameter d=80mm, L s =9.10m seamless steel pipe is the gas pipeline 1, with V 0 =0.11m 3 The elliptical seamless steel tank is a gas tank 2 with an exhaust pressure-resistant valve 9 on the gas tank 2. The air in the gas tank 2 is replaced with the methane CH in the gas line 1 4 out;

[0137] Close the exhaust pressure-resistant valve 9, measure the initial pressure value p of the methane gas in the gas tank 2 with the pressure sensor 5 with an accuracy of 0.1kPa 0 , measure the gas initial temperature T in the gas tank 2 with the first Pt thermometer 3 0 , the initial pressure value p of methane in the gas tank 2 is measured 0 =100kPa; the temperature me...

Embodiment 2

[0149] The simulated gas in gas line 1 is methane CH 4 , where the known critical parameter of methane is: p c =4596kPa, T c =190.53K;

[0150] The initial pressure value p is obtained by measuring the pressure sensor 5 1 8000.0kPa;

[0151] At room temperature 20°C, with inner diameter d=80mm, L s =9.10m seamless steel pipe as the gas pipeline, with V 0 =0.11m 3 The elliptical seamless steel tank is a gas tank 2, and the gas tank 2 has an exhaust pressure-resistant valve 9. The air in the gas tank 2 is replaced with the methane CH in the gas line 1 4 out;

[0152] Close the exhaust pressure-resistant valve 9, and measure the initial pressure value p of the methane gas in the gas tank 2 with the pressure sensor 5 with an accuracy of 0.1kPa 0 , measure the gas initial temperature T in the gas tank 2 with the first Pt thermometer 3 0 , the initial pressure value p of methane in the gas tank 2 is measured 0 =100kPa, the measured temperature in the gas tank 2 is room te...

Embodiment 3

[0162] The simulated gas in gas line 1 is carbon dioxide CO 2 , where the known critical parameter of carbon dioxide is: p c =7375kPa, T c =304.13K;

[0163] The initial pressure value p of carbon dioxide gas in the gas pipeline is obtained by measuring the pressure sensor 5 1 200.0kPa;

[0164] At room temperature 20°C, with inner diameter d=80mm, L s =9.10m seamless steel pipe is simulated gas pipeline 1, with V 0 =0.11m 3 The elliptical seamless steel tank is a gas tank 2 with an exhaust pressure-resistant valve 9 on the gas tank 2. The air in the gas tank 2 is replaced with the simulated gas carbon dioxide CO 2 out;

[0165] Close the exhaust pressure-resistant valve 9, measure the initial pressure value p of the carbon dioxide gas in the gas tank 2 with the pressure sensor 5 with an accuracy of 0.1kPa 0 , measure the gas initial temperature T in the gas tank 2 with the first Pt thermometer 3 0 , measure the initial pressure value p of carbon dioxide in the gas t...

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Abstract

The invention discloses a measuring device of a blocking position of a gas pipeline. The measuring device comprises a gas tank, and a first Pt thermometer and an exhaust pressure-resistance valve are connected to the gas tank. The gas tank is connected with the gas pipeline through a pressure-resistance flexible pipe, a second Pt thermometer is arranged on the gas pipeline, and a first pressure-resistance valve and a second pressure-resistance valve are respectively arranged on the pressure-resistance flexible pipe. A pressure sensor is connected to the pressure-resistance flexible pipe between the two pressure-resistance valves. The invention further discloses a measuring method of the measuring device. The measuring method comprises the steps that firstly, the initial pressure and temperature of gas in the gas tank are measured; secondly, the initial pressure and temperature of gas in the gas pipeline are measured; thirdly, the two pressure-resistance valves are opened, the gas in the gas pipeline flows towards the gas tank, and the pressure and temperature of the gas in a balanced state are measured; fourthly, the two pressure-resistance valves are closed, and the exhaust pressure-resistance valve of the gas tank is opened to discharge the gas; fifthly, an algorithm module in a computer is utilized to obtain the blocking position of the gas pipeline. The measuring device of the blocking position of the gas pipeline and the measuring method of the measuring device can accurately determine the blocking position of the gas pipeline.

Description

technical field [0001] The invention belongs to the technical field of gas pipeline clogging measurement, and relates to a gas pipeline clogging position measuring device, and also relates to a measuring method of the measuring device. Background technique [0002] Gas pipeline transportation involves all aspects of our production and life, such as: pipeline transportation of natural gas. As the main source of civil fuel, natural gas is transported from gas wells and gas generation stations to thousands of households through pipelines. In the northern region, due to the low temperature in winter, the freezing period in some areas is long, and natural gas contains some free water, generally the water content is about 0.5 m3 / 10,000 m3 of natural gas. In winter, because the gas wells produce water in the surface pipelines, when the formation outside the gas pipelines is below zero, more condensed water and natural gas hydrates are likely to be generated in the gas well surface ...

Claims

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Application Information

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IPC IPC(8): F17D5/00
Inventor 侯海云刘松涛周芳德
Owner XI'AN POLYTECHNIC UNIVERSITY
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