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Low temperature pipeline system

A pipeline system and pipeline technology, used in pipeline protection, pipeline heating/cooling, and pipeline protection through thermal insulation, etc., can solve problems such as safety accidents and waste of resources, and achieve high safety, cost savings, and rapid heat exchange. Effect

Active Publication Date: 2019-05-03
SHAANXI AEROSPACE ELECTROMECHANICAL ENVIRONMENTAL ENG DESIGNING INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problems of waste of resources and safety accidents in the existing pipeline system when the pipeline is pre-cooled, and provide a low-temperature pipeline system

Method used

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Embodiment Construction

[0034] The content of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0035] In order to reduce the consumption of pre-cooling medium in cryogenic liquid transportation pipelines and improve the discharge safety of pre-cooling medium, the present invention provides a low-temperature pipeline system with a system design pressure of 33MPa, a maximum working pressure of 30MPa, and a nominal diameter of DN150. Problems such as heat conduction and cold and heat compensation of medium transportation. The low-temperature pipeline system of the present invention is used for a wind tunnel heater test, the test medium is liquid oxygen, and the precooling medium is liquid nitrogen.

[0036] Such as figure 1 Shown, a kind of cryogenic pipeline system comprises high-pressure interlayer pipeline unit and high-pressure vacuum pipeline 3; The valve 4, the flowmeter 5 and the filter 6 on the high-pressu...

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Abstract

The invention relates to a low temperature pipeline system. The problems that during pipeline precooling of existing pipeline systems, resources are wasted, and safety accidents are liable to occur are solved. The system comprises a high-pressure interlayer pipeline unit and a high-pressure vacuum pipeline; the high-pressure interlayer pipeline unit comprises a first high-pressure interlayer pipeline, a second high-pressure interlayer pipeline, a valve, a flow meter and a filter; one end of the first high-pressure interlayer pipeline is connected with a high-pressure storage tank; the other end of the first high-pressure interlayer pipeline is connected with one end of the high-pressure vacuum pipeline and testing equipment; the other end of the high-pressure vacuum pipeline is connected with the testing equipment through the second high-pressure interlayer pipeline; the high-pressure vacuum pipeline comprises an inner layer conveying pipe, a middle precooling pipe, an outer layer vacuum heat insulation pipe, a first support frame, a first flexible connection assembly and a second flexible connection assembly; and the first high-pressure interlayer pipeline and the second high-pressure interlayer pipeline are of the same structure and each comprise an inner conveying pipe, a middle precooling pipe, an outer cladding layer, a third support frame and a third flexible connection assembly.

Description

technical field [0001] The invention relates to a delivery device for test equipment, in particular to a low-temperature pipeline system. Background technique [0002] The pipeline system is used to transport the ultra-low temperature medium from the high-pressure storage tank to the two test equipment to provide oxidant for the test. The test equipment is a wind tunnel test heater, the test medium is liquid oxygen, and the boiling point temperature of liquid oxygen is -183°C. Conventional low-temperature liquid oxygen pipelines transport medium through stainless steel pipes. In order to prevent the cold energy from being transferred to the atmosphere through stainless steel pipes, a layer of thermal insulation material is coated outside the stainless steel pipes for heat insulation to reduce the transfer of cold energy. [0003] When the test system starts to work, open the valve below the high-pressure storage tank, and the liquid oxygen in the high-pressure storage tank ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L53/70F16L59/02F16L55/24
Inventor 刘萍徐敏宋江涛李国涛马艳徐雷王在刚张磊高玉良马静
Owner SHAANXI AEROSPACE ELECTROMECHANICAL ENVIRONMENTAL ENG DESIGNING INST CO LTD
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