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Device for leading out sensor cable in ultralow-temperature high-pressure environment and installation method thereof

A high-pressure environment and sensor technology, applied in the field of ultra-low temperature, to achieve the effect of avoiding seal failure leakage, good sealing performance, and ensuring sealing performance

Pending Publication Date: 2021-11-12
BEIJING AEROSPACE PROPULSION INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem solved by the present invention is: Aiming at the problem of many defects in the traditional low-temperature sealant sealing method in the current prior art, a device and its installation method for leading out sensor cables in an ultra-low temperature and high pressure environment are proposed

Method used

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  • Device for leading out sensor cable in ultralow-temperature high-pressure environment and installation method thereof
  • Device for leading out sensor cable in ultralow-temperature high-pressure environment and installation method thereof
  • Device for leading out sensor cable in ultralow-temperature high-pressure environment and installation method thereof

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Embodiment Construction

[0030] A device and its installation method for leading out sensor cables in an ultra-low temperature and high pressure environment. The device is sealed at two places. The low temperature end is sealed to prevent liquid nitrogen from leaking from the outer wall of the extension rod. The normal temperature part is sealed by a sealing body and injected with hot melt adhesive. The tetrafluoroethylene ball head is sealed with the through joint, the sealing performance is reliable, and the working pressure can reach more than 2MPa. In order to ensure the sealing of the outlet of the sensor cable, the cable is properly extended through the extension rod, so that the ultra-low temperature will not be transmitted to the outlet of the wire, and the outlet end of the cable can be sealed by using the normal temperature sealing method, which can be effectively reinforced by the lock nut and rubber pad cable, to ensure sealing performance.

[0031] The device for leading out the sensor ca...

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Abstract

The invention provides a device for leading out a sensor cable in an ultralow-temperature and high-pressure environment and an installation method thereof. The sealing performance is ensured through sealing of a low-temperature end and a normal-temperature end, so that the sensor is convenient and rapid to install and good in sealing performance, and an ultralow-temperature and high-pressure test can be carried out; meanwhile, the device can be reliably applied to measurement of sensor parameters in the ultralow-temperature high-pressure environment, the sensor cable can be reliably led out from the ultralow-temperature high-pressure environment through the device, and the sealing failure leakage phenomenon is avoided.

Description

technical field [0001] The invention relates to a device for leading out sensor cables in an ultra-low temperature and high pressure environment and an installation method thereof, belonging to the field of ultra-low temperature technology. Background technique [0002] The development of a liquid rocket engine requires a large number of ground component tests, and the excellent performance of the test bench plays a vital role in evaluating the product. The liquid rocket engine uses low-temperature liquid fuel and oxidant, and considering the safety of the test medium, liquid nitrogen (boiling point is -196°C) is usually used as the simulated medium for the test. [0003] In order to accurately measure the performance parameters of the test product, during the ground test of liquid rocket engine components, an ultra-low temperature and high pressure environment is established inside the test device, and low temperature sensors (temperature sensor, vibration sensor, etc.) are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/18G01N3/02F02K9/96H02G15/00H02G15/013H02G15/04
CPCG01N3/18G01N3/02F02K9/96H02G15/00H02G15/013H02G15/04
Inventor 秦雷孟博丁陈茜茹董丽双周琰张栋汪士清
Owner BEIJING AEROSPACE PROPULSION INST
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