CN203519207U - Heat flux sensor - Google Patents
Heat flux sensor Download PDFInfo
- Publication number
- CN203519207U CN203519207U CN201320607632.5U CN201320607632U CN203519207U CN 203519207 U CN203519207 U CN 203519207U CN 201320607632 U CN201320607632 U CN 201320607632U CN 203519207 U CN203519207 U CN 203519207U
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- red copper
- sheet
- heat flux
- flux sensor
- constantan
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Abstract
The utility model discloses a heat flux sensor. The sensor comprises a stainless steel shell, a boron nitride ceramic chip, a constantan sheet and a red copper matrix. An edge of a circular constantan sheet is welded on the red copper matrix. The boron nitride ceramic chip covers on the constantan sheet. The stainless steel shell is located on external portions of the boron nitride ceramic chip, the constantan sheet and the red copper matrix. Two copper leads are led out from a center of the constantan sheet and the red copper matrix and are served as output leads of the heat flux sensor. A heat-resistance temperature of a heat flow meter of the utility model can reach above 3000 DEG C. A measuring range is large and can reach 4MW/m<2>. Response time is short and is within 5s. Measuring precision is high and an error is within 5%. The heat flow meter can be widely used in high-temperature and hostile environments of metallurgy, aerospace and the like and carry out stable and accurate measurement.
Description
Technical field
The utility model relates to sensor field, particularly a kind of heat flux sensor.
Background technology
The common heat resisting temperature of existing heat flow measurement sensor is lower, and for example general test environment temperature is below 1000 ℃, and the hot-fluid range of measurement is lower, conventionally at 1MW/m
2below, but also have the shortcoming of response time oversize (time >30s).
In the thermal environment of the firing chamber of scramjet engine, chamber temperature can reach 3000 ℃ conventionally, and heat flow density can arrive 3MW/m
2, common experimental period is all about 10 seconds.Therefore, existing most heat flow meter cannot be applicable to be similar to the rugged surroundings of the so large hot-fluid of high temperature of supersonic speed combustion chamber.
Utility model content
The technical problems to be solved in the utility model overcomes above-mentioned defect exactly, proposes a kind of heat flux sensor, can be used in the measurement of the rugged surroundings of the large hot-fluid of high temperature.
In order to address the above problem, the utility model provides a kind of heat flux sensor, comprising: stainless steel casing, boron nitride ceramics sheet, constantan sheet and red copper matrix, wherein, the edge joint weld of circular constantan sheet is connected on red copper matrix, covers described boron nitride ceramics sheet above constantan sheet; Described stainless steel casing is positioned at the outside of described boron nitride ceramics sheet, constantan sheet and red copper matrix; From constantan Pian center and red copper matrix, draw respectively two copper wires, as the output lead of described heat flux sensor.
Preferably, the induction zone that the upper surface of described boron nitride ceramics sheet is described heat flux sensor.
Preferably, described red copper matrix is cylindrical, has hollow structure, and the copper wires of drawing from constantan Pian center is guided to the outside of described heat flux sensor by described hollow structure.
Preferably, together with described stainless steel casing passes through fastened by screw with red copper matrix.
Heat flow meter of the present utility model is compared with common heat flow meter, and by the protection of thermal insulation ceramics and stainless steel casing, heat resisting temperature can reach more than 3000 ℃, and the range of this heat flow meter is very large, reaches as high as 4MW/m
2, the response time is short, and the response time, measuring accuracy was high in 5s, and error is in 5%.This heat flow meter can be widely used in high temperature, the rugged environments such as metallurgy, Aero-Space to be stablized, measures accurately.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the heat flux sensor of the utility model embodiment;
Wherein, 1 is constantan sheet, and 2 is boron nitride ceramics sheet, and 3 is stainless steel casing, and 4 is red copper matrix, and 5 is wire, and 6 is screw hole.
Embodiment
Hereinafter in connection with accompanying drawing, embodiment of the present utility model is elaborated.It should be noted that, in the situation that not conflicting, the embodiment in the application and the feature in embodiment be combination in any mutually.
As shown in Figure 1, the heat flux sensor of the embodiment of the present invention comprises stainless steel casing 3, boron nitride ceramics sheet 2, constantan sheet 1 and red copper matrix 4.The edge joint weld of circular constantan thin slice 1 is connected on columniform red copper matrix 4, draws two copper conductors 5 respectively, as the output voltage wire of heat flux sensor from the center of constantan sheet 1 and the bottom of red copper matrix 4.Wherein, red copper matrix 4 has hollow structure, and the copper wires 5 of drawing from the center of constantan sheet 1 is guided to the outside of heat flux sensor by this hollow structure.Upper surface at constantan sheet 1 covers a boron nitride ceramics sheet 2, for the protection of constantan sheet, by high temperature, is not destroyed.The coated outside of boron nitride ceramics sheet 2, constantan sheet 1 and red copper matrix 4 stainless steel casing 3, for sensor is protected.One side of stainless steel casing 3 has a screw hole 6, for screw (not shown) is installed, holds out against red copper matrix 4 and stainless steel casing 3.
The induction zone of this sensor is positioned at the upper surface of boron nitride ceramics sheet 2, when hot-fluid enters sensor from the upper surface of boron nitride ceramics sheet 2, has passed through constantan sheet 1, and mind-set edge flowing from constantan sheet 1, finally flows to red copper matrix 4 the insides.In this process, according to solid conductive heat principle, the mobile meeting of hot-fluid produces a temperature difference at center and red copper matrix 4 places of constantan sheet 1.Because center and the red copper matrix 4 of constantan sheet 1 is connected with copper wire, according to the principle of hot-fluid idol, temperature difference can produce an electric potential difference, and this electric potential difference just can be exported by wire 5, adopts voltmeter just can measure this electric potential difference.Therefore, by measuring this electric potential difference, just can access the size of hot-fluid.
Claims (4)
1. a heat flux sensor, is characterized in that, comprising: stainless steel casing, boron nitride ceramics sheet, constantan sheet and red copper matrix, and wherein, the edge joint weld of circular constantan sheet is connected on red copper matrix, covers described boron nitride ceramics sheet above constantan sheet; Described stainless steel casing is positioned at the outside of described boron nitride ceramics sheet, constantan sheet and red copper matrix; From constantan Pian center and red copper matrix, draw respectively two copper wires, as the output lead of described heat flux sensor.
2. heat flux sensor as claimed in claim 1, is characterized in that, the induction zone that the upper surface of described boron nitride ceramics sheet is described heat flux sensor.
3. heat flux sensor as claimed in claim 1, is characterized in that,
Described red copper matrix is cylindrical, has hollow structure, and the copper wires of drawing from constantan Pian center is guided to the outside of described heat flux sensor by described hollow structure.
4. heat flux sensor as claimed in claim 1, is characterized in that,
Together with described stainless steel casing passes through fastened by screw with red copper matrix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607632.5U CN203519207U (en) | 2013-09-29 | 2013-09-29 | Heat flux sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320607632.5U CN203519207U (en) | 2013-09-29 | 2013-09-29 | Heat flux sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203519207U true CN203519207U (en) | 2014-04-02 |
Family
ID=50378125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320607632.5U Expired - Lifetime CN203519207U (en) | 2013-09-29 | 2013-09-29 | Heat flux sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203519207U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706166A (en) * | 2016-11-14 | 2017-05-24 | 北京临近空间飞行器系统工程研究所 | Ceramic wall surface composite plug type heat flux sensor applicable to high-enthalpy, medium and low heat flux environment |
| CN106908174A (en) * | 2017-01-23 | 2017-06-30 | 西北工业大学 | The heat-flow meter of dynamic real-time measurement solid propellant rocket internal oxidition aluminothermy current density |
| CN111094921A (en) * | 2017-09-15 | 2020-05-01 | 拉普兰塔-拉登理工大学 | Heat flux sensor |
| 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 |
-
2013
- 2013-09-29 CN CN201320607632.5U patent/CN203519207U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106706166A (en) * | 2016-11-14 | 2017-05-24 | 北京临近空间飞行器系统工程研究所 | Ceramic wall surface composite plug type heat flux sensor applicable to high-enthalpy, medium and low heat flux environment |
| CN106706166B (en) * | 2016-11-14 | 2019-04-30 | 北京临近空间飞行器系统工程研究所 | The compound plug heat flow transducer of the ceramic wall surface of low-heat stream environment suitable for high enthalpy |
| CN106908174A (en) * | 2017-01-23 | 2017-06-30 | 西北工业大学 | The heat-flow meter of dynamic real-time measurement solid propellant rocket internal oxidition aluminothermy current density |
| CN106908174B (en) * | 2017-01-23 | 2019-09-27 | 西北工业大学 | The heat-flow meter of dynamic real-time measurement solid propellant rocket internal oxidition aluminothermy current density |
| CN111094921A (en) * | 2017-09-15 | 2020-05-01 | 拉普兰塔-拉登理工大学 | Heat flux sensor |
| 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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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |