A heat flow static calibration device

A calibration device and heat flow technology, applied in the field of sensor calibration, can solve the problems of large discrete errors and untraceable heat flow, and achieve the effect of reducing discrete errors and improving static calibration accuracy

Active Publication Date: 2021-05-28
INST OF MECHANICS - CHINESE ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a heat flow static calibration device to solve the technical problems in the prior art that the heat flow cannot be traced and the discrete error is large under short-term dynamic calibration.

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
  • A heat flow static calibration device
  • A heat flow static calibration device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] At present, the calibration of heat flow sensors is generally dynamic calibration. The sensor response is investigated by applying pulsed heat flow loads, including laser loading methods, droplet loading methods, shock tube calibration methods, etc., forming a short-term heat flow loading process, and heat flow testing The object is often a hot plate or a large pipe, and the heat transfer process is also very complicated. In the traditional heat radiatio...

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 discloses a heat flow static calibration device, which comprises a high-temperature zone and a low-temperature zone for temperature detection by a target sensor in a vacuum state, and a convective heat transfer state that generates a uniform temperature gradient between the high-temperature zone and the low-temperature zone The vacuum steady-state measuring device and the high-temperature zone and low-temperature zone used to connect the vacuum steady-state measuring device, the calibration metering device for tracing the heat flow source under the convective heat transfer state, and the electromotive force data generated under the convective heat transfer state, And through the electromotive force data inversion of the heat flow output data after tracing the source, the data acquisition device that obtains the linear relationship between the heat flow output data and the target sensor temperature output data; through the temperature refinement and long-term measurement of the controllable distance, the existing The dynamic calibration of the sensor and the problem that the heat flow cannot be traced reduce the discrete error in the detection and calibration process, and effectively improve the static calibration accuracy of the coaxial thermocouple transient heat flow sensor.

Description

technical field [0001] The invention relates to the technical field of sensor calibration, in particular to a heat flow static calibration device. Background technique [0002] The coaxial thermocouple transient heat flow sensor is an experimental component that uses the Seebeck effect of different electrode materials to form an electromotive force under different temperature gradients and measure it, and then inverts the temperature and heat flow. It is mainly used in aerospace hypersonic aircraft aerodynamics Experiments, hypersonic flow related experiments, etc., have the characteristics of fast response, large measurement range, high precision, and strong robustness. [0003] At present, the calibration of heat flow sensors is generally dynamic calibration. The sensor response is investigated by applying pulsed heat flow loads, including laser loading methods, droplet loading methods, shock tube calibration methods, etc., forming a short-term heat flow loading process, a...

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 Patents(China)
IPC IPC(8): G01K15/00G01K19/00
CPCG01K15/005G01K19/00
Inventor 韩桂来姜宗林
Owner INST OF MECHANICS - CHINESE ACAD OF SCI
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap