Low-temperature fluid delivery tube connector with potential isolating function

A technology for cryogenic fluids and conveying pipes, applied to pipes/pipe joints/fittings, heat insulation protection pipes, heat preservation, etc., can solve the problems of ineffective isolation of high and low potentials, achieve simple structure, convenient installation, and ensure heat insulation requirements Effect

Active Publication Date: 2015-07-01
INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to make up for the deficiencies of the prior art, and to provide a low-temperature fluid delivery pipe joint with potential isolation function to solve the problem that the existing low-temperature fluid delivery technology cannot effectively isolate high and low potentials, and to ensure the safety of the delivery pipeline. Thermal insulation performance

Method used

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  • Low-temperature fluid delivery tube connector with potential isolating function
  • Low-temperature fluid delivery tube connector with potential isolating function

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Embodiment Construction

[0017] A double-layer low-temperature fluid delivery pipe joint with potential isolation function, including such as figure 1 External piping as shown, such as figure 2 Internal piping shown.

[0018] Such as figure 1 , the external pipeline is composed of upper flange 1, lower flange 2 and epoxy spacer 3. Both the upper flange 1 and the lower flange 2 are provided with a sealing groove 4, and a circular section sealing ring 5 is placed in the sealing groove 4, and an epoxy sleeve 6 is placed in the bolt hole 10 of the flange, and the lower surface of the lower flange 2 Place epoxy gasket 8 and fasten it with bolt 7 and nut 9.

[0019] The material resistivity of the epoxy spacer 3 is very high, which can separate the potential of the upper flange 1 and the lower flange 2 . The upper and lower surfaces of the epoxy spacer 3 are smooth, and used together with the sealing ring 5 in the sealing groove 4, the vacuum in the tube can be guaranteed. The epoxy sleeve 6 ensures t...

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PUM

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Abstract

The invention discloses a composite liquid helium and liquid nitrogen delivery tube connector with a potential isolating function, which comprises an external tube, an internal tube and a shielding tube support, wherein the external tube comprises two flanges and an epoxy isolating piece, and is sealed by a seal ring and fastened by an epoxy casing tube, an epoxy gasket and a bolt, the internal tube takes a potential isolating piece as a base, and is welded with low-temperature liquid delivery tubes at two ends, the metal tube sections of the low-temperature liquid delivery tubes and the potential isolating piece are wound by heat insulating layers, the shielding tube support adopts a square thin plate and provided with a plurality of through holes so as to lower heat conducting quantity. The composite liquid helium and liquid nitrogen delivery tube connector provided by the invention has a simple structure, can effectively insulate high and low potential during the using process, is able to adapt to various complex low-temperature liquid delivery environments, can ensure the insulating requirements of delivered liquid, is convenient to mount and stable and reliable in work, and is applicable to various low-temperature liquid delivery occasions.

Description

technical field [0001] The invention relates to the field of cryogenic liquid delivery, in particular to a cryogenic fluid delivery pipe joint with potential isolation function. Background technique [0002] The transportation of cryogenic liquid is an important part of realizing cryogenic refrigeration cycle and providing cryogenic environment. It is widely used in scientific and technological production fields such as cryogenic condensate pumps, air separation, natural gas liquefaction, development of helium and rare gases, and low-temperature superconductivity research. Considering that the temperature of the working fluid is much lower than normal temperature, heat is easily transmitted to the working fluid through conduction, radiation, etc., which increases the transmission loss. At present, the transportation of cryogenic liquids mainly adopts double-layer infusion tubes. The outer tube is a vacuum isolation tube. fixed. Because the cold end of the low-temperature f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L25/02F16L59/02
CPCF16L25/026F16L39/005F16L59/065
Inventor 谢远来胡纯栋程斌陶玲梁立振李军许永建杨思皓谢亚红刘智民刘胜蒋才超盛鹏
Owner INST OF PLASMA PHYSICS CHINESE ACAD OF SCI
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