Natural gas gathering and transportation pipeline leakage simulation device and method

A technology of pipeline leakage and simulation device, applied in the field of leakage simulation device of natural gas gathering and transportation pipeline, can solve the problems of inability to monitor three-dimensional temperature field and toxic gas diffusion field, etc.

Pending Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, a Chinese invention patent with the authorized announcement number CN103712755B discloses a test device for simulating natural gas leaking in soil. The test device can measure the pressure gradient of natural gas near the leak hole when natural gas leaks and the natural gas concentration in the soil during the leak. , but cannot monitor the three-dimensional temperature field and toxic gas diffusion field near the leak hole

Method used

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  • Natural gas gathering and transportation pipeline leakage simulation device and method
  • Natural gas gathering and transportation pipeline leakage simulation device and method
  • Natural gas gathering and transportation pipeline leakage simulation device and method

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0025] Such as Figure 1 to Figure 3 As shown, it includes simulated pipeline 1, gas supply system and venting system. The simulated pipeline 1 adopts the closed pipe section with the same material as the gathering and transportation pipeline under the actual working conditions to increase the consistency between the simulated test and the field working conditions and the accuracy of the test results. credibility. One end of the simulated pipeline 1 is provided with an air inlet 23, and the other end is provided with an air outlet 14, and the air supply system is connected with the air inlet 23 for supplying air to the simulated pipeline 1; the air vent system is connected with the air outlet 14 for After the simulation test is over, the gas in the simulation pipeline 1 is quickly released. Three groups of leakage holes 2 are arranged at intervals along the axial direction on the side wall of the simulated pipeline 1 , the distance between two adjacent groups of leakage holes...

Embodiment 1

[0078]The natural gas gathering and transportation pipeline in Example 1 is a buried pipeline, and the natural gas gathering and transportation pipeline in this example is a spanning pipeline. The layout of the simulation test site for the spanning pipeline will be described in detail below. It should be noted that the simulation device used in this example is the same as that in Example 1.

[0079] The layout of the simulated test site for the spanning pipeline:

[0080] (1) Leaping pipeline layout

[0081] Determine the specific location of the on-site experiment point for the leaping pipeline leakage monitoring, and carry out the leaping simulated pipeline layout in the high-sulfur gas field according to the safety distance of the pipeline layout and the relevant requirements for environmental impact. Arrange the high-pressure gas cylinders in the test area according to the site requirements, connect the gas supply pipeline with the high-pressure gas cylinders, connect the...

specific Embodiment 3

[0091] In the above embodiment, the temperature sensor and the concentration sensor are arranged on the mounting bracket at the same time, which can simultaneously monitor the temperature change and the concentration change of the toxic gas near the leakage hole. In this embodiment, the sensors are changed for the following two situations: if it is only necessary to monitor the temperature change near the leakage hole, only the temperature sensor may be arranged. Similarly, if it is only necessary to monitor changes in the concentration of toxic gases near the leak hole, only concentration sensors may be deployed.

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Abstract

The invention relates to a natural gas gathering and transportation pipeline leakage simulation device and method. The simulation device comprises a simulation pipeline which is provided with an air inlet, an emptying port and at least one leakage hole; an air supply system; an emptying system; and a plurality of sensor unit groups respectively arranged at the leakage hole and two sides of the leakage hole along the axial direction of the simulation pipeline, wherein the group comprises a plurality of sensor unit rings which are sequentially arranged at intervals along the radial direction, and each sensor unit ring comprises a plurality of sensor units which are arranged around the circumference of the simulation pipeline; wherein the sensor unit includes at least one of a temperature sensor and a concentration sensor. The sensor units are arranged in a space near the leakage hole according to a specific mode to form a leakage monitoring area near the leakage hole, and the sensor units can select temperature sensors and / or concentration sensors according to test requirements, so that a three-dimensional temperature field and / or a toxic gas diffusion field near the leakage hole are / is monitored; and the selection of the monitoring technology is guided.

Description

technical field [0001] The invention relates to the technical field of gas leakage and diffusion, in particular to a leakage simulation device and simulation method of a natural gas gathering and transportation pipeline. Background technique [0002] Complex mountainous high-sulfur gas fields are located in undulating mountainous areas. Natural gas gathering and transportation pipelines usually need to cross tunnels and rivers. It is difficult to monitor and warn pipeline leakage by manual inspection. Once the pipeline leaks, it will not only cause waste of resources, but also threaten the safe operation of pipeline facilities. In addition, because natural gas contains high concentration of hydrogen sulfide gas, hydrogen sulfide gas is a poisonous gas, once a leak occurs, it is very easy to cause personnel poisoning. safe operation of pipelines. There are many kinds of existing leakage monitoring technologies for gathering and transportation pipelines, and different monito...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06T17/00
CPCG06T17/00
Inventor 郭西水王清岭黄雪松何定豫商剑峰王选奎欧天雄马雯
Owner CHINA PETROLEUM & CHEM CORP
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