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A cryostat for superconducting cables

A cryostat and superconducting cable technology, applied in superconducting devices, usage of superconducting elements, superconducting/high-conducting conductors, etc., can solve problems such as high cost of use, lack of flow meters, and fast consumption of liquid helium , to achieve the effects of low production and use costs, real-time monitoring of calorific value, and meeting low temperature requirements

Active Publication Date: 2018-01-19
CHINA ELECTRIC POWER RES INST +2
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  • Claims
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AI Technical Summary

Problems solved by technology

[0003] The existing cryostats using continuous flow cryostats have the following disadvantages: ①Complicated structure, fast consumption of liquid helium, high production cost and high use cost
②Without a flowmeter, the flow rate cannot be measured, and the calorific value of the cable body can be calculated
③ Poor sealing, easy to conduct heat conduction, thus forming a large range of heat exchange, thus increasing the consumption of coolant, which is not conducive to saving resources

Method used

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  • A cryostat for superconducting cables
  • A cryostat for superconducting cables
  • A cryostat for superconducting cables

Examples

Experimental program
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Effect test

Embodiment 1

[0030] Such as figure 1 As shown, a cryostat for a superconducting cable, the superconducting cable 23 includes a cable skeleton located at the axis of the cable and a superconducting tape, an insulating tape, and a low-temperature holding inner of the cable skeleton arranged outward in sequence. tube, insulating layer and outer sheath; the cryostat includes a cooling jacket 1, a vacuum jacket 2, a liquid nitrogen cooling Screen casing 3 and shell 4,

[0031] Both ends of the cooling jacket 1 connected to the calorific value measuring device 12 are respectively connected to a liquid nitrogen cold shield 5 containing liquid nitrogen.

[0032] The liquid nitrogen cold shield 5 is a T-shaped cold shield composed of an X-direction liquid nitrogen pipe coaxially arranged with the cooling jacket 1 and a Y-direction liquid nitrogen pipe perpendicular to the axial direction of the X-direction liquid nitrogen pipe. Screen.

[0033] Between the X-direction liquid nitrogen pipe and th...

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Abstract

The invention relates to a cryostat for a superconducting cable. The superconducting cable includes a cable frame located at the axis of the cable as well as a superconducting tape, an insulating tape, a low-temperature maintaining inner tube, an insulating layer and an outer sheath which are arranged on the cable frame from inside to outside sequentially; the cryostat comprises a cooling bushing, a vacuum bushing, a liquid nitrogen cold screen bushing and a shell which are coaxial with the superconducting cable and are located on the outer sheath from inside to outside sequentially; and two ends of the cooling bushing which is connected with a heat emission amount measuring device are respectively connected with a liquid nitrogen cold screen filled with liquid nitrogen. With the cryostat for the superconducting cable of the invention adopted, low-temperature requirements of the superconducting cable can be satisfied, and the heat emission amount of the body of the cable can be monitored in real time, and production and use cost can be decreased.

Description

technical field [0001] The invention relates to cryogenic technology processing equipment, in particular to a cryostat for superconducting cables. Background technique [0002] Existing superconducting cables are electrical wires made of composite materials with ceramic materials that enter a superconducting state at sufficiently low temperatures. With sufficient cooling, the direct current resistance of a correspondingly constructed wire is zero, as long as a specified current intensity is not exceeded. Therefore, a cryostat for superconducting cables is required to meet the low temperature requirements of superconducting cables. [0003] The existing cryostats using continuous flow cryostats have the following disadvantages: ①Complicated structure, fast consumption of liquid helium, high production cost and high use cost. ②Without a flowmeter, it is impossible to measure the flow rate and calculate the calorific value of the cable body. ③ Poor sealing, easy to conduct h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01B12/16
CPCH01B12/16Y02E40/60
Inventor 刘伟李振明陈盼盼诸嘉慧丘明
Owner CHINA ELECTRIC POWER RES INST
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