CN103353355A - Sensor for temperature and heat-flow measuring under high temperature environment - Google Patents
Sensor for temperature and heat-flow measuring under high temperature environment Download PDFInfo
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- CN103353355A CN103353355A CN2013102323370A CN201310232337A CN103353355A CN 103353355 A CN103353355 A CN 103353355A CN 2013102323370 A CN2013102323370 A CN 2013102323370A CN 201310232337 A CN201310232337 A CN 201310232337A CN 103353355 A CN103353355 A CN 103353355A
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Abstract
The invention discloses a sensor for temperature and heat-flow measuring under a high temperature environment. The sensor comprises a protection case body and measurement assemblies. The two sets of measurement assemblies are arranged on a fixation base, which is arranged on the front end face of the protection case body, in the same way; a cooling jacket in each measurement assembly is arranged in a through-hole of the fixation base; and an inlet pipe and an outlet pipe, which are internally and externally sleeve-connected, are arranged in the cooling jacket. Measurement columns, each of which is externally coated with a heat-insulation inner sleeve and a heat-insulation outer sleeve respectively, are fixedly arranged on the front end face of the fixation base; and the middle part of each measurement column is connected with an electric heating terminal of one thermocouple and the real part of each measurement column is connected with an electric heating terminal of one thermocouple. The sensor for temperature and heat-flow measuring is formed through the said structure; through double thermopiles, heat-flow, that reaches the end faces of the measurement columns, can be measured, besides, temperature of gas or solid that is contacted with the end faces of the measurement columns can be measured; the sensor, which can work under the high temperature environment, with the highest working temperature up to 1300 DEG C, can realize a two-parameter measurement of the temperature and the heat-flow.
Description
Technical field
The present invention relates to a kind of sensor, specifically, is a kind of temperature, hot-fluid synthesis sensor that can be used under the hot environment (temperature can reach 1300 ℃), can be used for temperature or the heat flow measurement of gas, solid etc.
Background technology
The spacecraft such as rocket, aircraft engine is the soul of spacecraft, and in continuing for the research of these engines, wherein the thermal protection of engine is one of research emphasis always.
Hot-fluid and temperature are thermo-lag two important parameters, but because the fuel gas temperature of engine is very high, can reach thousands of degrees centigrade, and existing high-temperature heat flux sensor working temperature scarcely surpasses 800 ℃, can't satisfy the requirement of long-time measurement; The engine wall surface temperature is also very high simultaneously, can reach thousands of degrees centigrade, and the direct temperature measurement device on the market also can't satisfy the measurement requirement.
Summary of the invention
In order to address the above problem, the present invention proposes a kind of temperature, heat flow measurement sensor that can be used under the hot environment.
A kind of sensor for the temperature under the hot environment, heat flow measurement is characterized in that: comprise protective casing, firm banking and by measurement column, heat insulation inner sleeve, insulated sheath, cooling jacket, rising pipe, water inlet pipe and two measurement assemblies that thermopair consists of.
Described protective casing is tubular structure, and front end face is equipped with firm banking, has two mounting holes on the firm banking; Measuring assembly is two covers, and each mounting hole place adopts same way as that one cover is installed and measures assembly.
Cooling jacket is the tubular structure of end sealing in the described measurement assembly, seals an end and stretches in the mounting hole on the firm banking, and be fixed between mounting hole; Heat insulation inner sleeve is enclosed within the measurement column outside, and the terminal of heat insulation inner sleeve and measurement column all fixed with cooling jacket blind end end face; Insulated sheath is enclosed within the heat insulation inner sleeve outside, fixes between the port that measurement column front end and insulated sheath front end face are offered.
Described rising pipe is arranged in the cooling jacket, the welding of rising pipe rear portion and cooling jacket, anterior and and cooling jacket between have the gap; Offer apopore on the rising pipe sidewall; Rising pipe inner inlet pipe is arranged at rising pipe inside; Water inlet pipe circumferentially interiorly is connected to being connected the edge with upwards having in rising pipe front end week, makes between water inlet pipe and rising pipe to have the gap.
The electric heating end of described two thermopairs is connected with the rear portion with the middle part of measurement column respectively by silver soldering.
By said structure, consist of temperature of the present invention, heat flow measurement sensor, adopt two thermoelectric piles, both can measure the hot-fluid that arrives the measuring junction face, can measure again gas or solid temperature with the measurement column end contact.
The invention has the advantages that:
1, temperature of the present invention, heat flow measurement sensor can work long hours under hot environment, and the work maximum permissible temperature can reach 1300 ℃, can realize the two-parameter measurement of temperature and hot-fluid;
2, temperature of the present invention, heat flow measurement sensor can effectively reduce heat radiation and heat conduction to measurement column;
3, temperature of the present invention, heat flow measurement sensor can hinder gaseous exchange, greatly reduce the heat interchange of ambient atmos and internal gas.
Description of drawings
Fig. 1 is one-piece construction schematic diagram of the present invention;
Fig. 2 is one-piece construction cut-open view of the present invention.
Among the figure:
1-protective casing 2-firm banking 3-measures assembly
The heat insulation inner sleeve 303-insulated sheath of 301-measurement column 302-304-cooling jacket
305-rising pipe 306-water inlet pipe 307-thermopair 308-annular groove
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Temperature of the present invention, heat flow measurement sensor comprise protective casing 1, firm banking 2 and by measurement column 301, heat insulation inner sleeve 302, insulated sheath 303, cooling jacket 304, rising pipe 305, water inlet pipe 306 and two measurement assemblies 3 that thermopair 307 consists of;
Described protective casing 1 is tubular structure, and front end face is equipped with firm banking 2, has two mounting holes on the firm banking 2.Measuring assembly 3 is two covers, and each mounting hole is sentenced same way as one cover measurement assembly 3 is installed.Measure assembly 3 as example take a cover, structure and the mounting means of measuring assembly 3 among the present invention described:
Cooling jacket 304 is the tubular structure of end sealing in the measurement assembly 3, sealing an end stretches in the mounting hole on the firm banking 2, flush with firm banking 2 leading flanks, and cooling jacket 304 week upwards cooperated with mounting hole and be welded and fixed, the fixing of 2 of realization cooling jacket 304 and firm bankings.Have on the cooling jacket 304 sealing one end end face and has inside and outside two-layer ledge structure mounting groove, be used for location survey post 301 and heat insulation inner sleeve 302.
Described measurement column 301 terminal embeddings in the internal layer mounting groove, and be adhesively fixed by heat-conducting glue between the internal layer mounting groove; Heat insulation inner sleeve 302 coaxial sleeves, in the outer mounting groove of terminal embedding and are adhesively fixed by heat-conducting glue between outer mounting groove in measurement column 301 outsides.Insulated sheath 303 coaxial sleeves are in heat insulation inner sleeve 302 outsides, and the front end sealing has port, measurement column 301 front ends is stretched between port and port be adhesively fixed by high-temp glue, and measurement column 301 front end faces are flushed with insulated sheath 303 front end faces.301 of above-mentioned heat insulation inner sleeve 302 and measurement columns have the gap, 303 of heat insulation inner sleeve 302 and insulated sheath have the space, and uniformly-spaced be designed with annular groove 308 on heat insulation inner sleeve 302 sidewalls are circumferential, can prevent thus the heat conduction of tested high-temperature gas and solid, affect measuring accuracy.
Described rising pipe 305 coaxial being arranged in the cooling jacket 304, rising pipe 305 sidewalls week upwards evenly offers 4 apopores 308; Rising pipe 305 inside are coaxially arranged with water inlet pipe 306; Have the evagination part on the rising pipe 305 rear portion peripheral outer wall, by evagination part and cooling jacket 304 welding, realize the fixing of 304 of rising pipe 306 and cooling jackets, make thus 304 of rising pipe 305 and cooling jackets have the gap, as exhalant canal A.Upwards have in 305 front end weeks of rising pipe interiorly to connecting the edge, by connecting edge and water inlet pipe 306 welding, realize fixing of 305 of water inlet pipe 306 and rising pipes, and make water inlet pipe 306 and 305 of rising pipes have the gap, as exhalant canal B.Inject chilled water by water inlet pipe 306 thus, after by chilled water cooling jacket being cooled off, chilled water is flowed out by exhalant canal A and exhalant canal B.
The electric heating end of described two thermopairs 307 is connected with the rear portion with the middle part of measurement column 301 respectively by silver soldering, be specially: offer wire lead slot on cooling jacket 304 sidewalls, wire lead slot is communicated with the gap of 301 of heat insulation inner sleeve 302 and measurement columns, enter the wiring passage after making thus the electric heating end of two thermopairs 307 pass wire lead slot, with high-temp glue wire lead slot is filled, to reach the sealing of thermo wires is fixed, realization is connected with measurement column 301.
Measurement column 301 and protective jacket 304 all adopt nickel base superalloy to make among the present invention, can bear 1300 ℃ high temperature; Insulated sheath 303 adopts alumina-silicate ceramic fibre or other high temperature thermal insulation material to make, and the equal material of remainder adopts stainless steel to make.
By said structure, consist of temperature of the present invention, heat flow measurement sensor, adopt two thermoelectric piles, both can measure the hot-fluid that arrives the measuring junction face, can measure again gas or solid temperature with measurement column 301 end contacts; Concrete grammar is as follows: make two covers measure assemblies and be respectively first and measure assembly and measure assembly with second, at first water inlet pipe 306 passes into respectively temperature C1, flow velocity V1 and temperature C2, flow velocity V in the two cover measurement assemblies
2Cooling liquid, C
1＜C
2, V
1V
2Can increase thus first as far as possible and measure the temperature difference that assembly and second is measured two measurement column 301 bottoms in the assembly, make temperature survey more accurate.Temperature low first to measure in the assembly cooling liquid speed high, can accelerate heat interchange, make first to measure measurement column 301 bottom temperature in the assembly to measure the measurement column 301 bottom temperature of assembly than second lower; C1 is 0 ℃ among the present invention, and C2 is 80 ℃.
Measure in the assemblies four thermopairs by two covers and measure respectively the first temperature T of measuring measurement column 301 middle parts and bottom in the assembly
In 1, T
1 end, and the second temperature T of measuring measurement column 301 middle parts and bottom in the assembly
In 2, T
2 ends, the heat flow density that then arrives measurement column 301 end faces in the two cover measurement assemblies is:
Wherein, k
1Be measurement column 301 whole correction factors in the first measurement assembly (definite by demarcating, as to revise heat radiation and material thermal conductivity variation with temperature), k
2Be measurement column 301 whole correction factors in the second measurement assembly; λ represents the thermal conductivity of measurement column 301, the height of h measurement column 301, h
1Be first to measure in the assembly between two thermopair 307 electric heating ends the distance along the measurement column axis; h
2Be second to measure in the assembly between two thermopair 307 electric heating ends the distance along the measurement column axis.
The temperature of air-flow is:
Wherein, k '
1Be first to measure in the assembly part measurement column 301 correction factors between two thermopairs 307 (with k
1Difference is, k
1Be to measure in the assembly whole measurement column 301 to first to revise, and k just revise for the first part measurement column 301 of measuring in the assembly between two thermopairs 307); K '
2Be second to measure in the assembly part measurement column 301 correction factors between two thermopairs 307; H' represents measurement column 301 height.
The temperature of solid is:
Claims (10)
1. one kind is used for the temperature under the hot environment, the sensor of heat flow measurement, it is characterized in that: comprise protective casing, firm banking and by measurement column, heat insulation inner sleeve, insulated sheath, cooling jacket, rising pipe, water inlet pipe and two measurement assemblies that thermopair consists of;
Described protective casing is tubular structure, and front end face is equipped with firm banking, has two mounting holes on the firm banking; Measuring assembly is two covers, and each mounting hole place adopts same way as that one cover is installed and measures assembly;
Cooling jacket is the tubular structure of end sealing in the described measurement assembly, seals an end and stretches in the mounting hole on the firm banking, and be fixed between mounting hole; Heat insulation inner sleeve is enclosed within the measurement column outside, and the terminal of heat insulation inner sleeve and measurement column all fixed with cooling jacket blind end end face; Insulated sheath is enclosed within the heat insulation inner sleeve outside, fixes between the port that measurement column front end and insulated sheath front end face are offered;
Described rising pipe is arranged in the cooling jacket, and rising pipe rear portion and cooling jacket welding have the gap between front portion and cooling jacket; Offer apopore on the rising pipe sidewall; Rising pipe inner inlet pipe is arranged at rising pipe inside; Water inlet pipe circumferentially interiorly is connected to being connected the edge with upwards having in rising pipe front end week, makes between water inlet pipe and rising pipe to have the gap;
The electric heating end of described two thermopairs is connected with the rear portion with the middle part of measurement column respectively by silver soldering.
2. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: described cooling jacket seals an end end face and flushes with the firm banking leading flank.
3. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: the end of described heat insulation inner sleeve and measurement column is the inside and outside two-layer locating slot by designing on the cooling jacket end face respectively, realizes the location on the cooling jacket end face.
4. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: described measurement column front end face flushes with the insulated sheath front end face.
5. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: have the gap between described heat insulation inner sleeve and measurement column, have the space between heat insulation inner sleeve and insulated sheath, and heat insulation sidewall of the inside race uniformly-spaced is designed with annular groove on circumferentially.
6. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1 is characterized in that: described rising pipe sidewall evenly offers 4 apopores on circumferentially.
7. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: the wire lead slot of offering on the described cooling jacket sidewall, wire lead slot is communicated with the gap between heat insulation inner sleeve and measurement column, as the electric heating terminated line passage of thermopair.
8. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: described measurement column and protective jacket all adopt nickel base superalloy to make; Insulated sheath adopts high temperature thermal insulation material to make, and the equal material of remainder adopts stainless steel to make.
9. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 8, it is characterized in that: high temperature thermal insulation material is alumina-silicate ceramic fibre.
10. a kind of sensor for the temperature under the hot environment, heat flow measurement as claimed in claim 1, it is characterized in that: make two covers measure assemblies and be respectively first and measure assembly and measure assembly with second, at first water inlet pipe passes into respectively temperature C1, flow velocity V1 and temperature C2, flow velocity V in the two cover measurement assemblies
2Cooling liquid, C
1＜C
2, V
1V
2Measure in the assemblies four thermopairs by two covers and measure respectively the first temperature T of measuring measurement column middle part and bottom in the assembly
In 1, T
1 end, and the second temperature T of measuring measurement column middle part and bottom in the assembly
In 2, T
2 ends, the heat flow density that then arrives measurement column end face in the two cover measurement assemblies is:
Wherein, k
1Be the whole correction factor of measurement column in the first measurement assembly, k
2It is the whole correction factor of measurement column in the second measurement assembly; λ represents the thermal conductivity of measurement column, the height of h measurement column, h
1Be first to measure in the assembly distance between two thermopair electric heating ends; h
2Be second to measure in the assembly distance between two thermopair electric heating ends;
The temperature of air-flow is:
Wherein, k '
1Be first to measure in the assembly part measurement column correction factor between two thermopairs; K '
2Be second to measure in the assembly part measurement column correction factor between two thermopairs; H' represents the measurement column height.
The temperature of solid is:
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|---|---|---|---|
| CN201310232337.0A CN103353355B (en) | 2013-06-13 | 2013-06-13 | A kind of sensor for the temperature under hot environment, heat flow measurement |
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| CN201310232337.0A CN103353355B (en) | 2013-06-13 | 2013-06-13 | A kind of sensor for the temperature under hot environment, heat flow measurement |
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| CN103353355A true CN103353355A (en) | 2013-10-16 |
| CN103353355B CN103353355B (en) | 2015-09-16 |
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Cited By (8)
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| 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 |
| 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 |
| CN105043597A (en) * | 2015-04-23 | 2015-11-11 | 清华大学 | Radial and one-dimensional heat-conductive type high-temperature heat-flow meter |
| CN106525900A (en) * | 2016-11-10 | 2017-03-22 | 清华大学 | Water-cooled flame intensity measuring device |
| CN108369116A (en) * | 2015-12-09 | 2018-08-03 | 恩德斯+豪斯流量技术股份有限公司 | Connecting device, the measurement translator with this connecting device or the field instrumentation formed with this for being mechanically connected electronics housing and measurement translator shell |
| CN108982109A (en) * | 2018-03-20 | 2018-12-11 | 中北大学 | Full ceramic device is used for heat flow transducer signal test system under hyperthermal environments |
| CN109406010B (en) * | 2018-10-29 | 2020-07-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Water-cooling Gordon calorimeter |
| CN111579108A (en) * | 2020-07-08 | 2020-08-25 | 北京中玮科技有限公司 | Tubular thermopile sensor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN105043597A (en) * | 2015-04-23 | 2015-11-11 | 清华大学 | Radial and one-dimensional heat-conductive type high-temperature heat-flow meter |
| US10989570B2 (en) | 2015-12-09 | 2021-04-27 | Endress + Hauser Flowtec Ag | Connection apparatus for the mechanical connecting of an electronics housing and a measuring transducer housing |
| CN108369116B (en) * | 2015-12-09 | 2021-06-22 | 恩德斯+豪斯流量技术股份有限公司 | Coupling device for mechanically connecting an electronics housing to a measuring transducer housing, measuring transducer having such a coupling device, or field device formed therewith |
| CN108369116A (en) * | 2015-12-09 | 2018-08-03 | 恩德斯+豪斯流量技术股份有限公司 | Connecting device, the measurement translator with this connecting device or the field instrumentation formed with this for being mechanically connected electronics housing and measurement translator shell |
| CN106525900B (en) * | 2016-11-10 | 2018-11-30 | 清华大学 | A kind of water-cooled flame intensity measuring device |
| CN106525900A (en) * | 2016-11-10 | 2017-03-22 | 清华大学 | Water-cooled flame intensity measuring device |
| CN108982109A (en) * | 2018-03-20 | 2018-12-11 | 中北大学 | Full ceramic device is used for heat flow transducer signal test system under hyperthermal environments |
| CN109406010B (en) * | 2018-10-29 | 2020-07-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Water-cooling Gordon calorimeter |
| CN111579108A (en) * | 2020-07-08 | 2020-08-25 | 北京中玮科技有限公司 | Tubular thermopile sensor |
| CN111579108B (en) * | 2020-07-08 | 2022-02-25 | 北京中玮科技有限公司 | Tubular thermopile sensor |
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