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Pipeline leakage diffusion simulation experimental table for underground utility tunnel model pipeline

A technology of simulation experiment and comprehensive pipe gallery, which is applied in the field of simulation test bench for pipeline leakage and diffusion, can solve the problems of high cost, many monitoring items, complex structure of simulation test bench, etc., and achieves the advantages of convenient operation, simple structure and strong economy Effect

Active Publication Date: 2018-07-13
BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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Problems solved by technology

[0004] The disadvantages of the above-mentioned simulation test bench are: the structure of the simulation test bench is relatively complex, the cost is high, and there are many monitoring items. It is used for simulating the occurrence of fire in a manual working environment, and cannot be applied to the simulation of leakage.

Method used

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  • Pipeline leakage diffusion simulation experimental table for underground utility tunnel model pipeline
  • Pipeline leakage diffusion simulation experimental table for underground utility tunnel model pipeline
  • Pipeline leakage diffusion simulation experimental table for underground utility tunnel model pipeline

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Embodiment Construction

[0027] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0028] Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and / or groups thereof. It will be understoo...

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Abstract

The invention provides a pipeline leakage diffusion simulation experimental table for an underground utility tunnel model pipeline, comprising: a tunnel model pipeline. The upper portion of one end ofthe tunnel model pipeline is provided with an intake well, the intake well is communicated with a carbon dioxide cylinder, the tail end of the tunnel model pipeline is provided with an exhaust well,the exhaust well discharges carbon dioxide gas from the tunnel model pipeline into outdoor air, a leak hole is drilled in the middle bottom of the tunnel model pipeline, a leak point needle is inserted into the leak hole, the leak point needle is connected with a nitrogen cylinder through a gas pipe and an electromagnetic valve, the side of the tunnel model pipeline is provided with a plurality ofgas sampling holes, and gas sampling devices are fixed to a front longitudinal member of the tunnel model pipeline through screws and are inserted into the gas sampling holes to sample gas in the gassampling holes. The pipeline leakage diffusion simulation experimental table for the underground utility tunnel model pipeline can simulate pipeline leakage in the underground utility tunnel model pipeline, and leaking gas is automatically sampled via the gas sampling devices.

Description

technical field [0001] The invention relates to the technical field of gas pipeline leakage experiments, in particular to a simulation experiment platform for pipeline leakage and diffusion of model pipes in an underground comprehensive pipeline gallery. Background technique [0002] The gas pipeline is an important pipeline in the underground comprehensive pipe gallery, and there may be a danger of leakage during long-term use. In order to respond to the occurrence of leakage and make timely and effective early warnings, it is necessary to carry out parameters such as the gas alarm concentration set value (upper limit), the emergency cut-off concentration set value, the layout distance of the gas detector, and the ventilation times in the pipe gallery model. Experimental tests to determine the effectiveness and economy of gas pipelines and make corresponding adjustments. As the gas leakage experiment is difficult to carry out on the spot, a simulation experiment platform i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09B25/00
Inventor 许淑惠袁欣然张瑞达徐荣吉王曦
Owner BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
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