CN103033291B - A kind of circle paper tinsel thermoelectric pile heat flux sensor - Google Patents
A kind of circle paper tinsel thermoelectric pile heat flux sensor Download PDFInfo
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- CN103033291B CN103033291B CN201210543950.XA CN201210543950A CN103033291B CN 103033291 B CN103033291 B CN 103033291B CN 201210543950 A CN201210543950 A CN 201210543950A CN 103033291 B CN103033291 B CN 103033291B
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- thermocouple
- paper tinsel
- differential
- flux sensor
- heat flux
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Abstract
The invention discloses and a kind ofly greatly can improve the round paper tinsel thermoelectric pile heat flux sensor that heat flux sensor sensitivity does not affect again the sensor response time, comprise at least two to circle paper tinsel differential thermocouple and collets (5), often pair of described round paper tinsel differential thermocouple comprises paillon foil (1), heat sink (2), first thermocouple wire (3), second thermocouple wire (4), adjacent two between described round paper tinsel differential thermocouple, be in series by described first thermocouple wire (3) and described second thermocouple wire (4), and two are isolated by collets (5) insulation between described round paper tinsel differential thermocouple, often pair described in round paper tinsel differential thermocouple, described paillon foil (1) horizontal positioned is also welded on described heat sink (2), described first thermocouple wire (3) is weldingly connected in described paillon foil (1) central point, and described heat sink (2) and described second thermocouple wire (4) are weldingly connected.
Description
Technical field
The present invention relates to a kind of circle paper tinsel thermoelectric pile heat flux sensor.
Background technology
It is main total hot-fluid parameter that circle paper tinsel heat flux sensor is used for measuring radiation.Conventional circle paper tinsel heat flux sensor measurement range is from 5W/cm
2to 50M/cm
2, Full-span output nominal value is 10mV, and the response time, the sensitivity of wide range product was low, the response time fast, the sensitive height of small-range product, low-response from 3ms to 1s.At present, aerospacecraft and ground level heat test propose the demand of Quick Measurement small-range hot-fluid parameter, for improving the response time of circular foil heat flux transducer, do not affect again the sensitivity of product, in this context, round paper tinsel thermoelectric pile heat flux sensor measurement scheme is proposed.
Summary of the invention
Technology of the present invention is dealt with problems and is: for the deficiencies in the prior art, provides a kind ofly greatly to improve the round paper tinsel thermoelectric pile heat flux sensor that heat flux sensor sensitivity does not affect again the sensor response time.
Technical solution of the present invention is:
A kind of circle paper tinsel thermoelectric pile heat flux sensor, comprise at least two to circle paper tinsel differential thermocouple and collets, often pair of described round paper tinsel differential thermocouple comprises paillon foil, heat sink, the first thermocouple wire, the second thermocouple wire, adjacent two between described round paper tinsel differential thermocouple, be in series by described first thermocouple wire and described second thermocouple wire, and two are isolated by collets insulation between described round paper tinsel differential thermocouple; Often pair described in round paper tinsel differential thermocouple, described paillon foil horizontal positioned and be welded in described heat sink on; Described first thermocouple wire is weldingly connected in described paillon foil central point, and described heat sink and described second thermocouple wire is weldingly connected.
Described paillon foil adopts constantan material.
Described heat sink, described first thermocouple wire and described second thermocouple wire adopt pure copper material.
The present invention compared with prior art tool has the following advantages:
Round paper tinsel thermoelectric pile heat flux sensor of the present invention, can when the response time be constant, and sensitivity is risen to the N of conventional circle paper tinsel heat flux sensor sensitivity doubly, N is the quantity of circle paper tinsel differential thermocouple.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention;
Fig. 2 is single to circle paper tinsel differential thermocouple schematic diagram.
Embodiment
Just by reference to the accompanying drawings the present invention is described further below.
As Fig. 1, round paper tinsel thermoelectric pile heat flux sensor of the present invention is in series to (N >=2) circle paper tinsel differential thermocouple by N, for wherein arbitrary to circle paper tinsel differential thermocouple, as Fig. 2, comprise paillon foil 1, heat sink 2, first thermocouple wire 3 and the second thermocouple wire 4 and form.
In often pair of round paper tinsel differential thermocouple, first thermocouple wire 3 is a pair thermopair with paillon foil 1, second thermocouple wire 4, heat sink 2 adopts same material, between can not produce thermopower, paillon foil 1 and the second thermocouple wire 4, heat sink 2 are a pair thermocouple material, two pairs of thermopairs are oppositely connected, and partner round paper tinsel differential thermocouple.The paillon foil 1 of circle paper tinsel differential thermocouple is placed horizontally at heat sink upper and together with heat sink welding, the first thermocouple wire 3 is welded in paillon foil 1 central point, and the second thermocouple wire 4 is welded on heat sink 2; Last the second thermocouple wire 4 to circle paper tinsel differential thermocouple welds together with rear a pair round paper tinsel differential thermocouple first thermocouple wire 3.Paillon foil 1 material is constantan, and heat sink 2, first thermocouple wire 3 and the second thermocouple wire 4 material are fine copper, and the thermal conductivity of copper is large, and rapid heat dissipation, thermocouple type is T-shaped.Such Material selec-tion, can make differential thermocouple good linearity, precision high.The response time of circle paper tinsel differential thermocouple heat flux sensor is relevant to paillon foil size, N is identical to circle paper tinsel differential thermocouple heat flux sensor with 1 to circle paper tinsel differential thermocouple heat flux sensor paillon foil size, therefore, 1 is the same to response time of circle paper tinsel differential thermocouple heat flux sensor with the response time of N to circle paper tinsel differential thermocouple heat flux sensor.
Further as Fig. 1, during working sensor, when foil surfaces experiences hot-fluid q, hot-fluid is to foil surfaces homogeneous heating, and paillon foil central temperature is higher than lip temperature, and often pair of round paper tinsel differential thermocouple produces a difference thermopower V
0, N is to the output V after the series connection of circle paper tinsel differential thermocouple
1=N*V
0.Therefore, the sensitivity of paper tinsel thermopile sensor is justified
E
1＝V
1/q＝N
＊V
0/q＝N
＊E
0。(1)
Wherein, E
0be the sensitivity of a pair round paper tinsel differential thermocouple heat flux sensor.
The unspecified part of the present invention belongs to general knowledge as well known to those skilled in the art.
Claims (1)
1. a round paper tinsel thermoelectric pile heat flux sensor, it is characterized in that, comprise at least two to circle paper tinsel differential thermocouple and collets (5), often pair of described round paper tinsel differential thermocouple comprises paillon foil (1), heat sink (2), first thermocouple wire (3), the second thermocouple wire (4), adjacent two between described round paper tinsel differential thermocouple, be in series by described first thermocouple wire (3) and described second thermocouple wire (4), and two are isolated by collets (5) insulation between described round paper tinsel differential thermocouple; Often pair described in round paper tinsel differential thermocouple, described paillon foil (1) horizontal positioned is also welded on described heat sink (2); Described first thermocouple wire (3) is weldingly connected in described paillon foil (1) central point, described heat sink (2) and described second thermocouple wire (4) are weldingly connected, and last the second thermocouple wire 4 to circle paper tinsel differential thermocouple welds together with rear a pair round paper tinsel differential thermocouple first thermocouple wire 3;
Described paillon foil (1) material is constantan, heat sink (2), first thermocouple wire (3) and the second thermocouple wire (4) material are fine copper, thermocouple type is T-shaped, such Material selec-tion, differential thermocouple good linearity can be made, precision is high, the response time of circle paper tinsel differential thermocouple heat flux sensor is relevant to paillon foil size, N is identical with thickness to the area of circle paper tinsel differential thermocouple heat flux sensor with 1 respectively with thickness to the total area of circle paper tinsel differential thermocouple heat flux sensor paillon foil, therefore, the response time of 1 pair of round paper tinsel differential thermocouple heat flux sensor is the same with the response time of N to circle paper tinsel differential thermocouple heat flux sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210543950.XA CN103033291B (en) | 2012-12-11 | 2012-12-11 | A kind of circle paper tinsel thermoelectric pile heat flux sensor |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201210543950.XA CN103033291B (en) | 2012-12-11 | 2012-12-11 | A kind of circle paper tinsel thermoelectric pile heat flux sensor |
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|---|---|
| CN103033291A CN103033291A (en) | 2013-04-10 |
| CN103033291B true CN103033291B (en) | 2015-11-25 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512682B (en) * | 2013-08-29 | 2015-09-02 | 中国电子科技集团公司第四十八研究所 | A kind of slice array heat-flow sensor |
| CN103983365B (en) * | 2014-05-29 | 2017-02-15 | 北京航空航天大学 | Multi-measuring-head transient radiation heat flow meter and measuring method for thermal radiation heat flow density |
| CN104913862B (en) * | 2015-05-22 | 2017-05-24 | 清华大学 | convective heat flow measuring method based on circular foil heat flow meter |
| JP6500841B2 (en) * | 2016-05-25 | 2019-04-17 | 株式会社デンソー | Heat flow measuring device |
| RU2737681C1 (en) * | 2020-02-26 | 2020-12-02 | Федеральное государственное образовательное учреждение высшего образования "Санкт-Петербургский университет Государственной противопожарной службы Министерства Российской Федерации по делам гражданской обороны, чрезвычайным ситуациям и ликвидации последствий стихийных бедствий" | Method for measuring density of heat flow |
| CN115452180B (en) * | 2022-09-23 | 2024-03-29 | 中国空气动力研究与发展中心超高速空气动力研究所 | High-enthalpy airflow recovery temperature measurement method and measurement device |
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| US4722609A (en) * | 1985-05-28 | 1988-02-02 | The United States Of America As Represented By The Secretary Of The Navy | High frequency response multilayer heat flux gauge configuration |
| US5990412A (en) * | 1996-05-07 | 1999-11-23 | Vatell Corporation | Differential thermopile heat flux transducer formed by depositing metals and non-metals from liquids onto a substrate |
| CN2510838Y (en) * | 2001-12-10 | 2002-09-11 | 武汉大学 | Wall-pasting thermopile temperature sensor |
| CN2543047Y (en) * | 2002-05-13 | 2003-04-02 | 重庆大学 | Heat flowmeter test probe |
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| US4095453A (en) * | 1977-02-25 | 1978-06-20 | E. I. Du Pont De Nemours And Company | Differential thermal analysis cell |
| US4722609A (en) * | 1985-05-28 | 1988-02-02 | The United States Of America As Represented By The Secretary Of The Navy | High frequency response multilayer heat flux gauge configuration |
| US5990412A (en) * | 1996-05-07 | 1999-11-23 | Vatell Corporation | Differential thermopile heat flux transducer formed by depositing metals and non-metals from liquids onto a substrate |
| CN2510838Y (en) * | 2001-12-10 | 2002-09-11 | 武汉大学 | Wall-pasting thermopile temperature sensor |
| CN2543047Y (en) * | 2002-05-13 | 2003-04-02 | 重庆大学 | Heat flowmeter test probe |
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| CN103033291A (en) | 2013-04-10 |
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