Thermophysical property sensor and measurement method for temperature measurement of ring heating excitation center point
A measurement method and temperature sensor technology, applied in the direction of material thermal development, etc., can solve the problems that the test cycle and measurement accuracy cannot be taken into account, and achieve the effect of short measurement cycle, simple algorithm, and simple structure
Active Publication Date: 2020-09-11
SOUTHEAST UNIV
View PDF11 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] Purpose of the invention: The purpose of the invention is to provide a thermophysical property sensor and measurement method for temperature measurement at the central point of the ring heating excitation, so as to solve the problem that the test cycle and measurement accuracy cannot be taken into account
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0019] The present invention will be further described below in conjunction with the accompanying drawings.
[0020] like Figure 1-3 As shown, the thermophysical property sensor for temperature measurement at the central point of the circular heating excitation includes a circular electric heater 1 with a certain resistance, heater lead electrode 1, heater lead electrode 2 3, temperature sensor 4 and temperature sensor lead electrode 1. Lead wire electrodes 2. 6. Upper and lower electrical insulating protective films 7 and 8. The ring electric heater and its lead electrode, the temperature sensor and its lead electrode are sandwiched between the upper and lower electrical insulation protective films, one end of the temperature sensor is fixed in the center of the ring electric heater, and the two sides and edges of the ring electric heater are made of electrical insulation film It is closed to prevent electric leakage or water leakage, and the electrical insulating film also...
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
| Property | Measurement | Unit |
|---|---|---|
| width | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| electrical resistance | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a circular ring heating excitation center point temperature measuring thermophysical property sensor, which comprises an annular electric heater and a temperature sensor clamped between electric insulation protection films, wherein one end of the temperature sensor is fixed at the center of the annular electric heater; each of the annular electric heater and the temperaturesensor is provided with a lead-out wire electrode. On the basis of heat conduction theoretical measurement heat conductivity and heat diffusion coefficient, the structure is simple; the division of the heater and the temperature sensor is realized; the influence of contact heat resistance is avoided; meanwhile, the requirements on a heating power supply are reduced; the method principle of measuring the heat conductivity and the heat diffusion coefficient is reliable, and the algorithm is simple; the heat conductivity and the heat diffusion coefficient of the material can be fast and simultaneously determined; no specific requirements are needed on the tested shape. The sensor has the advantages that the structure is simple; the calculation is simple and convenient; the measurement periodis short; the manufacturing cost is low.
Description
technical field [0001] The invention relates to a device and a method for measuring thermal conductivity and thermal diffusivity of a material, in particular to a thermophysical property sensor and a measuring method for temperature measurement at a circular heating excitation center point. Background technique [0002] Material thermal conductivity and thermal diffusivity are important thermophysical properties of materials, especially the thermophysical properties of new materials are one of the basic data of common concern in the fields of thermophysical science and material science. [0003] The theoretical basis for measuring thermal conductivity and thermal diffusivity is heat conduction theory. The basic principle is to place the measured material under specific initial conditions and boundary conditions of heating excitation, and measure the heat flow through the measured object and the characteristic points or The temperature or temperature change rate on the surfac...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/20
CPCG01N25/20
Inventor 张辉
Owner SOUTHEAST UNIV