Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Temperature measurement and calibration platform in space vacuum environment

A vacuum environment and temperature measurement technology, applied in thermometer testing/calibration, thermometers, measuring devices, etc., can solve the problems of small number of gas molecules, less involved, weak absorption signals, etc.

Active Publication Date: 2012-07-04
BEIJING DONGFANG MEASUREMENT & TEST INST
View PDF4 Cites 169 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although TDLAS technology has made significant progress in the measurement of gas temperature and concentration, and realized high-precision online measurement of gas temperature and concentration in various environments, it is regrettable that the current research on TDLAS technology is mainly aimed at specific engineering applications. The pressure range of its research is generally concentrated in the range of 0.1kPa to 1000kPa. Few researchers try to measure the temperature and concentration of gas in a high-vacuum environment. The main reasons for this are the following two points: First, the current TDLAS technology mainly For specific engineering applications, and engineering applications generally rarely involve extremely low pressure conditions; second, TDLAS technology obtains the temperature and concentration of the gas by analyzing the absorption of the gas to the laser, but in a vacuum environment, the gas per unit volume The number of molecules is very small, so that the absorption signal is very weak, which is not conducive to experimental measurement

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Temperature measurement and calibration platform in space vacuum environment
  • Temperature measurement and calibration platform in space vacuum environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Below with the accompanying drawings ( figure 1 ) to illustrate the present invention.

[0020] figure 1 It is a structural schematic diagram of a temperature measurement and calibration platform for implementing the present invention in a space vacuum environment. Such asfigure 1 As shown, the temperature measurement and calibration platform under the space vacuum environment includes a constant temperature bath 17, and the twin vacuum chambers (i.e., the vacuum chamber 20 and the first vacuum chamber body that are connected into pairs by a tee 26 2 vacuum chambers 19 of the vacuum chambers, the twin vacuum chambers include the first vacuum chamber 32 and the second vacuum chamber 33, and the first vacuum chamber 32 and the second vacuum chamber 33 are connected by a tee 26 Vacuum extraction device, the outer wall of the first vacuum chamber 32 and the outer wall of the second vacuum chamber 33 are provided with a standard thermometer sensor 31, the standard thermome...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a temperature measurement and calibration platform in space vacuum environment. The temperature measurement and calibration platform is favorable for realizing the simultaneous calibration of contact type temperature measurement and non-contact type temperature measurement, so the temperature measurement and calibration platform is served for heat vacuum and heat balance experiments of spacecrafts such as satellites, spaceship and the like. The temperature measurement and calibration platform comprises a constant temperature bath, wherein a double-sub-cavity vacuum cavity, the double-sub-cavity vacuum cavity comprises a first vacuum cavity body and a second vacuum cavity body, the first vacuum cavity body and the second vacuum cavity body are connected with a vacuum pumping device through a three-way valve, standard temperature indicator sensors are respectively arranged on the outer wall of the first vacuum cavity body and on the outer wall of the second vacuum cavity body, the standard temperature indicator sensors are connected with a temperature secondary meter, a laser light path reflecting device is arranged in the vacuum cavity of the first vacuum cavity body for calibrating a non-contact type temperature measuring system based on the tunable diode laser absorption spectrum technology, and the vacuum cavity of the second vacuum cavity body is used for accommodating a temperature sensor for calibrating a contact type temperature measuring system adopting the temperature sensor.

Description

technical field [0001] The invention relates to a temperature measurement and calibration technology in a vacuum environment, in particular to a temperature measurement and calibration platform in a space vacuum environment. The use of the platform is conducive to solving the traceability problem of temperature measurement in vacuum, and realizes the simultaneous calibration of contact temperature measurement and non-contact temperature measurement, thereby serving the thermal vacuum and thermal balance tests of spacecraft such as satellites and spaceships. Background technique [0002] In order to verify the correctness of satellite thermal design and ensure the reliable operation of satellites in space orbit, space thermal environment simulation experiments must be carried out in the process of satellite development. The simulated space thermal environment on the ground is the basic condition for realizing the thermal test. In the thermal vacuum test, the temperature of re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G01K15/00
Inventor 贾军伟张书锋
Owner BEIJING DONGFANG MEASUREMENT & TEST INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products