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Gas conveying pipe network pressure maintaining detection method and system

A detection method and delivery pipe technology, applied in the pipeline system, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of repeated investment, low work efficiency, and low detection accuracy, so as to improve enterprise management level and reduce manpower The effect of input cost and guarantee of construction quality

Active Publication Date: 2019-12-10
郑州畅威物联网科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the results of manual records have large deviations, and it is impossible to continuously record the temperature and pressure changes in the gas delivery pipeline for 24 hours, 36 hours or 48 hours; Calculation based on data at several reference time points has the disadvantages of low work efficiency, low detection accuracy, heavy analysis workload and repeated investment

Method used

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  • Gas conveying pipe network pressure maintaining detection method and system
  • Gas conveying pipe network pressure maintaining detection method and system
  • Gas conveying pipe network pressure maintaining detection method and system

Examples

Experimental program
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Effect test

Embodiment 1

[0030] A pressure-holding detection method for a gas delivery pipeline network, the pressure-holding detection method comprising: constructing a temperature-pressure pressure-holding detection model of a gas delivery pipeline to be tested, and collecting the actual temperature value and temperature in the gas delivery pipeline to be tested through a data acquisition terminal The actual pressure value, according to the temperature-pressure holding detection model and the actual temperature value, obtain the ideal pressure value in the gas delivery pipeline to be tested; calculate the pressure error value and temperature error value of the data acquisition terminal, according to the pressure Error value, the temperature error value and the ideal pressure value, calculate the ideal pressure tolerance upper limit value and the ideal pressure tolerance lower limit value; within the preset time, if the actual pressure value inside the gas delivery pipeline to be measured is within If...

Embodiment 2

[0052] The difference between this embodiment and the above-mentioned embodiment is that the pressure maintaining detection method further includes: calculating the pressure drop in the gas delivery pipeline to be tested, and judging whether the tightness of the gas delivery pipeline to be tested is qualified according to the pressure drop; The upper limit value of the ideal pressure tolerance and the lower limit value of the ideal pressure tolerance determine that the airtightness of the gas delivery pipeline to be tested is qualified, and the airtightness of the gas delivery pipeline to be tested is determined to be qualified according to the pressure drop, then the airtightness of the gas delivery pipeline to be tested is determined Qualified; otherwise, it is determined that the tightness of the gas delivery pipeline to be tested is unqualified. Wherein, the unqualified sealing performance indicates that the gas delivery pipeline to be tested is in a leaking state.

[0053...

Embodiment 3

[0060] The difference between this embodiment and Embodiment 2 is that the pressure holding detection method further includes: calculating the actual pressure difference inside the gas delivery pipeline to be tested under the same actual temperature value, and determining the pressure to be tested according to the actual pressure difference. Whether the tightness of the gas delivery pipeline is qualified; if the tightness of the gas delivery pipeline to be tested is determined to be qualified according to the upper limit of the ideal pressure tolerance and the lower limit of the ideal pressure tolerance, and the tightness of the gas delivery pipeline to be tested is determined according to the actual pressure difference If the airtightness of the gas delivery pipeline to be tested is qualified, it is determined that the airtightness of the gas delivery pipeline to be tested is qualified; otherwise, it is determined that the airtightness of the gas delivery pipeline to be tested ...

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Abstract

The invention provides a gas conveying pipe network pressure maintaining detection method and system. The pressure maintaining detection method comprises the steps that according to the pressure errorvalue, the temperature error value and ideal pressure value, ideal pressure tolerance upper limit value and ideal pressure tolerance lower limit value are calculated; within the preset time, if the actual pressure value in a gas conveying pipeline to be detected fluctuates between the ideal pressure tolerance upper limit value and the ideal pressure tolerance lower limit value, it is judged thatthe seal of the gas conveying pipeline to be detected is qualified; within the preset time, if the actual pressure value in the gas conveying pipeline to be detected breaks through the ideal pressuretolerance lower limit value, is it judged that the gas conveying pipeline to be detected is in the leakage state; and in the preset time, if the actual pressure value in the gas conveying pipeline tobe detected breaks through the ideal pressure tolerance upper limit value, it is judged that a pressure adding phenomenon appears in the gas conveying pipeline to be detected. The safety hidden dangercan be found in advance, the pipeline accidents can be prevented, and the advantages of digitization, precision, visualization and standardization are achieved.

Description

technical field [0001] The invention relates to the technical field of pressure maintenance detection of gas transmission pipelines, in particular to a method and system for pressure maintenance detection of gas transmission pipeline networks. Background technique [0002] With the acceleration of urbanization and the need for urban supporting construction and shared safety, newly-built or rebuilt gas transmission pipeline network projects have become an important part of urban pipeline network construction; the early and late stages of gas transmission pipeline network operation are high incidence of accidents Therefore, the airtightness test of the gas transmission pipeline network before it is put into operation is a key part of pipeline safety testing. [0003] The gas transmission pipeline network includes gas transmission and distribution pipelines and special gas transmission pipelines in production plants, etc. It is required in the relevant specifications for the i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F17D5/02
CPCF17D5/005F17D5/02
Inventor 常磊裴军辉蔡永伟刘广帅杜瑞杰
Owner 郑州畅威物联网科技有限公司
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