CN103033291A - Circular-foil thermopile heat-flow sensor - Google Patents
Circular-foil thermopile heat-flow sensor Download PDFInfo
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- CN103033291A CN103033291A CN201210543950XA CN201210543950A CN103033291A CN 103033291 A CN103033291 A CN 103033291A CN 201210543950X A CN201210543950X A CN 201210543950XA CN 201210543950 A CN201210543950 A CN 201210543950A CN 103033291 A CN103033291 A CN 103033291A
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- foil
- paper tinsel
- thermocouple wire
- thermocouple
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Abstract
The invention discloses a circular-foil thermopile heat-flow sensor which is capable of improving sensitivity of a heat-flow sensor greatly and meanwhile not affecting response time of the heat-flow sensor. The circular-foil thermopile heat-flow sensor comprises at least two pairs of circular-foil differential thermocouples and insulating blocks (5), each pair of the circular-foil differential thermocouples comprise a foil piece (1), a heat sink (2), a first thermocouple wire (3), a second thermocouple wire (4), the two adjacent pairs of the circular-foil differential thermocouples are in a series connection through the first thermocouple wire (3) and the second thermocouple wire (4), and the two pairs of the circular-foil differential thermocouples are insulated and isolated by the insulating blocks (5). In each pair of the circular-foil differential thermocouples, the foil piece (1) is welded to the heat sink (2) horizontally, the first thermocouple wire (3) is welded to a central point of the foil piece (1), and the heat sink (2) and the second thermocouple wire (4) are connected in a welded mode.
Description
Technical field
The present invention relates to a kind of round 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, the Full-span output nominal value is 10mV, the response time, the sensitivity of wide range product was low, the response time is fast from 3ms to 1s, sensitive high, the low-response of small-range product.At present, aerospacecraft and ground level heat test have proposed 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, under this background, round paper tinsel thermoelectric pile heat flux sensor measurement scheme has been proposed.
Summary of the invention
Technology of the present invention is dealt with problems and is: for the deficiencies in the prior art, provide a kind of and can greatly 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 round paper tinsel thermoelectric pile heat flux sensor, comprise at least two pairs of round paper tinsel differential thermocouples and collets, the every pair of described round paper tinsel differential thermocouple comprises paillon foil, heat sink, the first thermocouple wire, the second thermocouple wire, between adjacent two pairs of described round paper tinsel differential thermocouples, be in series by described the first thermocouple wire and described the second thermocouple wire, and isolate by the collets insulation between two pairs of described round paper tinsel differential thermocouples; In every pair of described round paper tinsel differential thermocouple, described paillon foil horizontal positioned and be welded in described heat sink on; Described the first thermocouple wire is weldingly connected in described paillon foil central point, and described heat sink and described the second thermocouple wire is weldingly connected.
Described paillon foil adopts the constantan material.
Described heat sink, described the first thermocouple wire and described the second thermocouple wire adopt pure copper material.
The present invention compared with prior art has following advantage:
Round paper tinsel thermoelectric pile heat flux sensor of the present invention can be in constant situation of response time, the N that sensitivity is risen to the sensitivity of conventional circle paper tinsel heat flux sensor doubly, N is the quantity of circle paper tinsel differential thermocouple.
Description of drawings
Fig. 1 is synoptic diagram of the present invention;
Fig. 2 is single to circle paper tinsel differential thermocouple synoptic diagram.
Embodiment
Below just by reference to the accompanying drawings the present invention is done further introduction.
Such 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, such as Fig. 2, comprise that paillon foil 1, heat sink the 2, first thermocouple wire 3 and the second thermocouple wire 4 form.
In every pair of round paper tinsel differential thermocouple, the first thermocouple wire 3 is a pair of thermopair with paillon foil 1, the 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 of thermocouple material, two pairs of thermopairs oppositely link to each other, and round paper tinsel differential thermocouple partners.The paillon foil 1 of circle paper tinsel differential thermocouple be placed horizontally at heat sink upper and with heat sink welding together, the first thermocouple wire 3 is welded in paillon foil 1 central point, 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 of round paper tinsel differential thermocouple the first thermocouple wire 3.Paillon foil 1 material is constantan, and heat sink the 2, first thermocouple wire 3 and the second thermocouple wire 4 materials are fine copper, and the thermal conductivity of copper is large, rapid heat dissipation, and thermocouple type is T-shaped.Such material is selected, and can make differential thermocouple good linearity, precision height.Response time and the paillon foil Size dependence of circle paper tinsel differential thermocouple heat flux sensor, N is identical with 1 pair of round paper tinsel differential thermocouple heat flux sensor to circle paper tinsel differential thermocouple heat flux sensor paillon foil size, therefore, the response time of 1 pair of round paper tinsel differential thermocouple heat flux sensor is the same with N to the response time of justifying paper tinsel differential thermocouple heat flux sensor.
Further such as Fig. 1, during working sensor, when foil surfaces was experienced hot-fluid q, hot-fluid was to the foil surfaces homogeneous heating, and the paillon foil central temperature is higher than lip temperature, and every pair of round paper tinsel differential thermocouple produces a difference thermopower V
0, the output V after N connects to circle paper tinsel differential thermocouple
1=N*V
0Therefore, justify the sensitivity of paper tinsel thermopile sensor
E
1＝V
1/q＝N
＊V
0/q＝N
＊E
0。(1)
Wherein, E
0Be the sensitivity of a pair of 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 (3)
1. round paper tinsel thermoelectric pile heat flux sensor, it is characterized in that, comprise at least two pairs of round paper tinsel differential thermocouples and collets (5), every pair of described round paper tinsel differential thermocouple comprises paillon foil (1), heat sink (2), the first thermocouple wire (3), the second thermocouple wire (4), between adjacent two pairs of described round paper tinsel differential thermocouples, be in series by described the first thermocouple wire (3) and described the second thermocouple wire (4), and isolate by collets (5) insulation between two pairs of described round paper tinsel differential thermocouples; In every pair of described round paper tinsel differential thermocouple, described paillon foil (1) horizontal positioned also is welded on described heat sink (2); Described the first thermocouple wire (3) is weldingly connected in described paillon foil (1) central point, and described heat sink (2) are weldingly connected with described the second thermocouple wire (4).
2. justify as claimed in claim 1 paper tinsel thermoelectric pile heat flux sensor, it is characterized in that described paillon foil (1) adopts the constantan material.
3. justify as claimed in claim 1 paper tinsel thermoelectric pile heat flux sensor, it is characterized in that described heat sink (2), described the first thermocouple wire (3) and described the second thermocouple wire (4) adopt pure copper material.
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 |
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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 true CN103033291A (en) | 2013-04-10 |
| CN103033291B CN103033291B (en) | 2015-11-25 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512682A (en) * | 2013-08-29 | 2014-01-15 | 中国电子科技集团公司第四十八研究所 | Slice array heat-flow sensor |
| CN104913862A (en) * | 2015-05-22 | 2015-09-16 | 清华大学 | Convective heat flow measuring method based on circular foil heat flow meter |
| 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 |
| CN109196318A (en) * | 2016-05-25 | 2019-01-11 | 株式会社电装 | Hot-fluid measurement 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 |
| CN115452180A (en) * | 2022-09-23 | 2022-12-09 | 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 measuring method and measuring device |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103512682A (en) * | 2013-08-29 | 2014-01-15 | 中国电子科技集团公司第四十八研究所 | Slice array heat-flow sensor |
| 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 |
| CN104913862A (en) * | 2015-05-22 | 2015-09-16 | 清华大学 | Convective heat flow measuring method based on circular foil heat flow meter |
| CN104913862B (en) * | 2015-05-22 | 2017-05-24 | 清华大学 | convective heat flow measuring method based on circular foil heat flow meter |
| CN109196318A (en) * | 2016-05-25 | 2019-01-11 | 株式会社电装 | Hot-fluid measurement device |
| CN109196318B (en) * | 2016-05-25 | 2020-06-05 | 株式会社电装 | 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 |
| CN115452180A (en) * | 2022-09-23 | 2022-12-09 | 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 measuring method and measuring device |
| 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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| CN103033291B (en) | 2015-11-25 |
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