CN201892588U - Water-cooling type heat flux sensor - Google Patents
Water-cooling type heat flux sensor Download PDFInfo
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- CN201892588U CN201892588U CN201020657691XU CN201020657691U CN201892588U CN 201892588 U CN201892588 U CN 201892588U CN 201020657691X U CN201020657691X U CN 201020657691XU CN 201020657691 U CN201020657691 U CN 201020657691U CN 201892588 U CN201892588 U CN 201892588U
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Abstract
The utility model relates a water-cooling type heat flux sensor which comprises a metal sheet (1), an outer shell (2) and an inner shell (3), wherein the surface of the metal sheet (1) is blacked, and the inner shell (3) is embedded among the outer shell (2) and is fixedly sealed. The water-cooling type heat flux sensor is characterized in that a hot end lead wire (4) is led out of the back side at the center of the metal sheet (1), a cold end lead wire (5) is led out of the side face of the outer shell, the hot end lead wire (4) is insulated from the outer shell (2) by an insulating sleeve (6), and the constant temperature of the outer shell is kept by water cooling. The water-cooling type heat flux sensor can stably work in a thermal field environment for a long time, thereby being capable of exactly measuring the strength of the radiation heat flux, being capable of guaranteeing the consistency between the inner surface pressure and the outer surface pressure of a constantan circular foil piece, being capable of meeting the work requirement in a positive pressure environment and a negative pressure environment, being smaller in volume, high in precision, simple in installation and convenient to use, and being capable of meeting the requirement when the sensor works in the large-heat flux environment for a long time.
Description
Technical field
The invention belongs to the heat flow measurement technical field, relate to a kind of water-cooled heat flux sensor.
Background technology
Heat flux sensor is mainly used in the heat radiation heat flow rate per unit area and measures, and promptly can carry out pure radiant heat flux and measure, and also can comprise the compound heat flow measurement of radiation, convection current.Heat flux sensor is also referred to as GARDON meter (Gordon's meter), constantan Yuan Be sheet and heat sink body by surperficial blacking are formed, heat sink body material is a red copper, and constantan thin slice periphery and heat sink body firm welding are drawn copper conductor respectively and exported as signal on the center, the back side of constantan Yuan Be sheet and heat sink body.
The constantan Yuan Be sheet of surface blacking can produce temperature rise after absorbed radiation heat or advection heat, contact with heat sink body around causing, the heat that constantan Yuan Be sheet absorbs can be to conduction all around, and constantan Yuan Be sheet center can the generation temperature difference with periphery.According to theoretical derivation, after constantan Yuan Be sheet thickness, diameter are determined, this temperature difference She Yuan Be sheet central temperature that is directly proportional with the hot-fluid that circle model sheet absorbs is T1, heat sink body temperature degree is copper conductor and the thermopair heat outputting electromotive force V1 constantan circle sheet periphery of constantan Yuan Be sheet formation and the heat outputting electromotive force V2 of the thermopair that heat sink body (copper) forms that draw at T2 Cong Yuan Be sheet center, these two thermopairs are because negative pole is continuous, output signal is the poor of two thermopair electromotive forces, this signal is proportional to TI-T2, promptly be proportional to measured hot-fluid q, equivalent electrical circuit as shown in Figure 2.
V＝V1-V2
So, the output of this type heat flux sensor promptly corresponding the size of tested hot-fluid, after the heat flux sensor of calibration obtains the sensitivity coefficient constant C, can measure calculating according to following formula:
Q＝C·V
Q-measures hot-fluid in the formula; The C-sensitivity constant; The output of V-electromotive force.
If the heat-flow density sensor according to this principle design is not controlled heat sink body temperature degree when working, the temperature of heat sink body can increase in time in thermal field and increase, the value of V2 can become big along with the increase of Measuring Time like this, the value of V=V1-V2 can reduce, output can diminish, Here it is means, under the constant situation of tested hot-fluid, increase in time, the temperature of heat sink body can constantly rise, the signal output of sensor is more and more littler, so this heat flux sensor can't work long hours in the thermal field environment.
Summary of the invention
In measuring process, cause the inaccurate problem of measurement result in order to solve the prior art heat flux sensor, the present invention proposes a kind of can in the thermal field environment, working long hours, the water-cooled heat flux sensor that measuring accuracy is high owing to heat sink body temperature degree raises.
Technical scheme of the present invention is: the water-cooled heat flux sensor, comprise sheet metal, shell body, inner housing, described foil surfaces blacking, inner housing is embedded between the shell body, and fixing seal, the center back of described sheet metal are drawn the hot junction lead-in wire, and the cold junction lead-in wire is drawn in the housing side outside, insulate by insulation sleeve between described hot junction lead-in wire and the shell body, and shell body keeps constant temperature by water-cooled.
Described sheet metal is the constantan circle sheet.
Described hot junction lead-in wire and cold junction lead-in wire are metal lead wire.
Between described inner housing and the shell body by the silver soldering fixing seal.
Described insulation sleeve is an insulating ceramics.
The invention has the beneficial effects as follows: the shell body of water-cooled heat-flow density sensor of the present invention is the water flowing cooling, cold junction remains constant by the water-cooled temperature, therefore thermopair electromotive force V2 output is constant between constantan circle sheet periphery and the shell body, so this sensor can be in the thermal field environment long-time steady operation, accurately measuring radiation heat flow rate per unit area.In addition, the present invention can guarantee constantan Yuan Be sheet surfaces externally and internally pressure unanimity by the bottom open by design, can satisfy job requirement in malleation and subnormal ambient, and volume is less, the precision height, install simply, easy to use, can satisfy the requirement that works long hours under the big hot-fluid situation.
Description of drawings
Fig. 1 is the structural representation of water-cooled heat-flow density sensor of the present invention,
Fig. 2 is the side view of Fig. 1,
Fig. 3 is a heat flux sensor Kang Tong Be sheet temperature difference synoptic diagram,
Fig. 4 is a heat flux sensor thermopair equivalent circuit diagram,
Fig. 5 is a traditional hot flow sensor output synoptic diagram,
Fig. 6 is a water-cooled heat flux sensor output synoptic diagram of the present invention,
Among the figure: 1-Kang Tong Be sheet; 2-water cooled housing body; The 3-inner housing; 4-hot junction lead-in wire; 5-cold junction lead-in wire; The 6-insulation sleeve.
Embodiment
The present invention is further illustrated below by embodiment:
See also Fig. 1, it is the structural representation of water-cooled heat-flow density sensor of the present invention.Water-cooled heat-flow density sensor of the present invention comprises a sheet metal 1, shell body 2, inner housing 3.In the present embodiment, described sheet metal 1 is the constantan circle sheet, surperficial blacking, and the shell body material is a brass, and the inner housing material is a red copper, and inner housing 2 is embedded between the shell body 3, and by the silver soldering fixing seal.
Described constantan circle sheet is installed to the inner housing sensitive surface and fixes by a circle welding manner, draws hot junction lead-in wire 4 in the center back of constantan circle sheet, and cold junction lead-in wire 5 is drawn in the housing side outside.Please consult Fig. 2 simultaneously, by insulation sleeve 6 insulation, wherein, described hot junction lead-in wire 4 and cold junction lead-in wire 5 are the copper lead-in wire, can certainly be other metal lead wire between described hot junction lead-in wire 4 and the shell body 2.
The constantan Yuan Be sheet of water-cooled heat-flow density sensor surface blacking of the present invention can produce temperature rise after absorbed radiation heat or advection heat, the heat that constantan Yuan Be sheet absorbs can be to conduction all around, and constantan Yuan Be sheet center can the generation temperature difference with periphery.According to theoretical derivation, after constantan Yuan Be sheet thickness, diameter were determined, this temperature difference was directly proportional Yu the hot-fluid that Yuan Be sheet absorbs.See also Fig. 3, it is the Temperature Distribution synoptic diagram of water-cooled heat-flow density sensor.Yuan Be sheet central temperature is T1, the inner housing temperature is copper conductor and the thermopair heat outputting electromotive force V1 constantan circle sheet periphery of constantan Yuan Be sheet formation and the heat outputting electromotive force V2 of the thermopair that inner housing forms that draw at T2 Cong Yuan Be sheet center, these two thermopairs are because negative pole is continuous, output signal is the poor of two thermopair electromotive forces, this signal is proportional to TI-T2, promptly is proportional to measured hot-fluid q, and its equivalent electrical circuit as shown in Figure 4.
V＝V1-V2
So, the output of this type heat flux sensor promptly corresponding the size of tested hot-fluid, after the heat flux sensor of calibration obtains the sensitivity coefficient constant C, can measure calculating according to following formula:
Q＝C·V
Q-measures hot-fluid in the formula; The C-sensitivity constant; The output of V-electromotive force.
See also Fig. 5 and Fig. 6, it is respectively the output synoptic diagram and the water-cooled heat-flow density sensor of the present invention output synoptic diagram of traditional hot flow sensor.The shell body of heat-flow density sensor of the present invention is the water flowing cooling, cold junction remains constant by the water-cooled temperature, therefore thermopair electromotive force V2 output is constant between constantan circle sheet periphery and the shell body, so can be in the thermal field environment long-time steady operation of this sensor is realized the accurate measurement to radiant heat flux intensity.
In addition, water-cooled heat-flow density sensor of the present invention can guarantee constantan Yuan Be sheet surfaces externally and internally pressure unanimity by the bottom open by design, can satisfy job requirement in malleation and subnormal ambient.This sensor bulk is less, and the precision height is installed simply, and is easy to use, can satisfy the requirement that works long hours under the big hot-fluid situation.
Claims (5)
1. water-cooled heat flux sensor, comprise sheet metal (1), shell body (2), inner housing (3), the surperficial blacking of described sheet metal (1), inner housing (2) is embedded between the shell body (3), and fixing seal, it is characterized in that, the center back of affiliated sheet metal (1) is drawn hot junction lead-in wire (4), cold junction lead-in wire (5) is drawn in the housing side outside, insulate by insulation sleeve (6) between described hot junction lead-in wire (4) and the shell body (2), and shell body keeps constant temperature by water-cooled.
2. water-cooled heat flux sensor according to claim 1 is characterized in that: described sheet metal (1) is the constantan circle sheet.
3. water-cooled heat flux sensor according to claim 2 is characterized in that: described hot junction lead-in wire (4) and cold junction lead-in wire (5) are metal lead wire.
4. water-cooled heat flux sensor according to claim 3 is characterized in that: between described inner housing (2) and the shell body (3) by the silver soldering fixing seal.
5. water-cooled heat flux sensor according to claim 4 is characterized in that: described insulation sleeve (6) is an insulating ceramics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020657691XU CN201892588U (en) | 2010-12-14 | 2010-12-14 | Water-cooling type heat flux sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020657691XU CN201892588U (en) | 2010-12-14 | 2010-12-14 | Water-cooling type heat flux sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201892588U true CN201892588U (en) | 2011-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020657691XU Expired - Fee Related CN201892588U (en) | 2010-12-14 | 2010-12-14 | Water-cooling type heat flux sensor |
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| CN (1) | CN201892588U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353355A (en) * | 2013-06-13 | 2013-10-16 | 北京航空航天大学 | Sensor for temperature and heat-flow measuring under high temperature environment |
| CN103674342A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water card type heat flux sensor |
| CN103674331A (en) * | 2013-12-13 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Thermal sink type thermal resistance and thermal current sensor |
| CN103674330A (en) * | 2013-12-13 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Thermal current sensor |
| CN103674339A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water-cooled thermal-resistant heat flux sensor |
| CN103674340A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Module resistance sensor |
| CN103674332A (en) * | 2013-12-16 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water-cooled heat flux sensor |
| CN103698057A (en) * | 2013-12-15 | 2014-04-02 | 绵阳富林岚科技有限责任公司 | Heat-resistance heat flux sensor |
| CN106525900A (en) * | 2016-11-10 | 2017-03-22 | 清华大学 | Water-cooled flame intensity measuring device |
| CN112556887A (en) * | 2020-12-22 | 2021-03-26 | 北京强度环境研究所 | Gardon type heat flow meter capable of laterally feeding and discharging water |
-
2010
- 2010-12-14 CN CN201020657691XU patent/CN201892588U/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353355A (en) * | 2013-06-13 | 2013-10-16 | 北京航空航天大学 | Sensor for temperature and heat-flow measuring under high temperature environment |
| CN103674331B (en) * | 2013-12-13 | 2016-03-16 | 绵阳富林岚科技有限责任公司 | A kind of thermal sink type thermal resistance heat flux sensor |
| CN103674331A (en) * | 2013-12-13 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Thermal sink type thermal resistance and thermal current sensor |
| CN103674330A (en) * | 2013-12-13 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Thermal current sensor |
| CN103674339A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water-cooled thermal-resistant heat flux sensor |
| CN103674340A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Module resistance sensor |
| CN103698057A (en) * | 2013-12-15 | 2014-04-02 | 绵阳富林岚科技有限责任公司 | Heat-resistance heat flux sensor |
| CN103674342A (en) * | 2013-12-15 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water card type heat flux sensor |
| CN103674342B (en) * | 2013-12-15 | 2016-05-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of water cassette heat flow transducer |
| CN103674340B (en) * | 2013-12-15 | 2016-05-11 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of mould resistance sensor |
| CN103674339B (en) * | 2013-12-15 | 2016-08-17 | 中国空气动力研究与发展中心超高速空气动力研究所 | A kind of water-cooled Heat-resistance heat flux sensor |
| CN103674332A (en) * | 2013-12-16 | 2014-03-26 | 绵阳富林岚科技有限责任公司 | Water-cooled heat flux sensor |
| CN103674332B (en) * | 2013-12-16 | 2017-02-15 | 中国空气动力研究与发展中心超高速空气动力研究所 | Water-cooled heat flux sensor |
| CN106525900A (en) * | 2016-11-10 | 2017-03-22 | 清华大学 | Water-cooled flame intensity measuring device |
| CN106525900B (en) * | 2016-11-10 | 2018-11-30 | 清华大学 | A kind of water-cooled flame intensity measuring device |
| CN112556887A (en) * | 2020-12-22 | 2021-03-26 | 北京强度环境研究所 | Gardon type heat flow meter capable of laterally feeding and discharging water |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110706 Termination date: 20161214 |
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| CF01 | Termination of patent right due to non-payment of annual fee |