Determination methods for urban gas pipeline network detection range and detection coverage rate

A technology of detection range and determination method, applied in pipeline systems, gas/liquid distribution and storage, instruments, etc., can solve the problems of inability to accurately judge the detection range of pipeline inspection and low detection efficiency of urban gas pipe network, and avoid detection. The generation of blind spots, reliable technical support, and the effect of avoiding repeated detection

Active Publication Date: 2017-12-01
BEIJING GAS GRP +1
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Problems solved by technology

[0004] In order to solve the problems that the existing technology cannot accurately judge the detection range in the pipeline inspection process and the detection efficiency of the urban gas pipeline network is low, the present invention innovatively provides a method for determining the detection range and de

Method used

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  • Determination methods for urban gas pipeline network detection range and detection coverage rate
  • Determination methods for urban gas pipeline network detection range and detection coverage rate
  • Determination methods for urban gas pipeline network detection range and detection coverage rate

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Example Embodiment

[0040] Example one:

[0041] Such as figure 1 As shown, the present invention discloses a method for determining the detection range of a city gas pipeline network, taking into account wind direction, wind speed, and driving trajectory factors that affect the detection range of the pipeline network. The determination method specifically includes the following steps.

[0042] Step 1. During the movement of the pipe network detection equipment, the real-time wind direction and real-time wind speed at the pipe network detection equipment are detected; in this embodiment, the pipe network detection equipment is preferably a leak detection vehicle.

[0043] Step 2: Calculate the real-time included angle between the real-time wind direction and the movement direction of the pipe network detection equipment.

[0044] Step 3. Obtain the left standard detection distance and the right standard detection distance of the pipe network detection equipment under no wind conditions; in this embodimen...

Example Embodiment

[0063] Embodiment two:

[0064] This embodiment is basically the same as the solution disclosed in the first embodiment. The difference is that: in this embodiment, the actual detection distance on the left side and the actual detection distance on the right side of the pipe network detection device under windy conditions is required by means of coordinate calculation. In particular, there is another major difference between this embodiment and the embodiment: the angle between the wind direction and the movement direction of the pipe network detection equipment ranges from 0° to 360°. The specific description is as follows:

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Abstract

The invention discloses determination methods for the urban gas pipeline network detection range and detection coverage rate. The determination method for the detection range comprises the steps that the real-time wind direction and wind speed are detected in the moving process of pipeline network detection equipment; a real-time included angle formed between the real-time wind direction and the pipeline network detection equipment moving direction is calculated; the left-side detection distance and the right-side detection distance of the pipeline network detection equipment under the windless condition are acquired; the left-side actual detection distance and the right-side actual detection distance of a detection car in the actual detection process are calculated, and the actual detection coverage range of the detection car is determined; and the length of a pipeline covered by the detection coverage range of the detection car is determined by combining an urban gas pipeline network map. The determination method for the detection coverage rate comprises the step that the detection coverage rate is determined through the length of the pipeline covered by the detection range and the total length of all pipelines. According to the scientific and reasonable determination methods for the urban gas pipeline network detection range and detection coverage rate, the pipeline network detection coverage rate can be calculated in a quantized manner, therefore, the detection range can be effectively determined in time, and generation of a non-detection zone is avoided.

Description

technical field [0001] The invention relates to the technical field of city gas pipeline network inspection, and more specifically, the invention relates to a method for determining the detection range and detection coverage of the city gas pipeline network. Background technique [0002] The city has the characteristics of dense population and dense buildings. Leakage of gas pipelines will bring huge hidden dangers to the safe operation of the city. With the continuous development of the city scale and the expansion of the pipeline network scale, the production and operation management of gas enterprises are facing more severe tests. Although using a leak detection vehicle to perform leak detection along the pipeline-laying road can quickly find gas leakage; but since the vehicle can only drive on the road, the leak detection vehicle actually effectively detects how many pipelines and what leakage detection blind spots exist. At present, it is only estimated roughly by expe...

Claims

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Application Information

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IPC IPC(8): F17D5/02F17D1/02G06Q50/06
CPCF17D1/02F17D5/02G06Q50/06
Inventor 支晓晔李夏喜江敏罗青云齐晓琳
Owner BEIJING GAS GRP
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