CN2041425U - Film temp. sensor - Google Patents
Film temp. sensor Download PDFInfo
- Publication number
- CN2041425U CN2041425U CN 88216022 CN88216022U CN2041425U CN 2041425 U CN2041425 U CN 2041425U CN 88216022 CN88216022 CN 88216022 CN 88216022 U CN88216022 U CN 88216022U CN 2041425 U CN2041425 U CN 2041425U
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- China
- Prior art keywords
- film
- sensitive element
- sensor
- ceramic
- temperature measurement
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Abstract
The utility model discloses a thin film temperature sensor which overcomes the defects that the temperature measurement precision of the existing sensor is low, and the response speed is slow; the existing sensor is not suitable for the temperature measurement on the engine combustion chamber with the surface covered with ceramic coating. In the utility model, the structure that a layer of ceramic thick film is plated on the sensing element head, and two layers of thin film are respectively plated on the ceramic thick film, two blocks thin film are connected with the two thermocouple wire arranged in the sensing element, and the intersection of the two blocks thin film is overlapped together to form a hot junction is adopted, effectively improving the precision of the temperature measurement and the response speed. The utility model is particularly suitable for the temperature measurement of the combustion chamber of the adiabatic engine.
Description
The utility model relates to a kind of film temperature sensor that is used to measure high temperature, scribbles the film temperature sensor of the engine combustion room temperature of ceramic layer especially for surface measurements.
Existing film temperature sensor is made up of sensor body and the sensitive element that is contained on the sensor body.Sensitive element by the sensitive element matrix, be plated on the sensitive element head film be contained in the sensitive element matrix in and the thermocouple wire that has dielectric film that is connected with film form.A thermocouple wire is housed in the sensitive element matrix, this thermocouple wire and connect to such an extent that film is that commaterial is made with it, and constitute the utmost point of thermopair, the sensitive element matrix is as another utmost point of thermopair.The surface of contact of sensitive element matrix and film forms hot junction.The sensor of this structure is not suitable for the temperature that surface measurements scribbles the engine chamber of ceramic layer, because it does not have the situation of simulated combustion chamber surface truly, there is not ceramic insulation layer in the measured place, the temperature of feasible temperature of measuring and ceramic surface produces bigger deviation, and temperature measurement accuracy is poor.
The purpose of this utility model is to overcome the low deficiency of temperature measurement accuracy of above-mentioned prior art, and a kind of temperature measurement accuracy height is provided, the film temperature sensor that response speed is fast, and it is specially adapted to the chamber temperature that surface measurements scribbles the engine of ceramic membrane.
Technical solution of the present utility model is, film temperature sensor is made up of sensor body and the sensitive element that is contained on the sensor body, sensitive element is by the sensitive element matrix, be plated in film and the thermocouple wire composition that has dielectric film that is contained in the sensitive element matrix and is connected on the sensitive element head with film, its special character is: two thermocouple wires that have dielectric film by different materials system are housed in the sensitive element, have one deck ceramic thick film on the sensitive element head, be coated with the film of two different materials on the ceramic thick film respectively, two film junctions overlap, two films are connected with two thermocouple wires respectively, and thermocouple wire that links together and film are same material.
Dielectric film on the thermocouple wire can be a ceramic membrane.The method of loading onto thermocouple wire in sensitive element can be that two micropores of brill are put into the micropore fix tightly to the thermocouple wire that has dielectric film then on sensitive element.
The utility model is compared with existing sensor and has been obtained following good effect:
1. ceramic thick film makes along the outside heat conduction of sensor and significantly reduces, and two films overlap the hot junction that constitutes again on ceramic thick film, thereby has improved the response speed of sensor.
2. this sensor can be simulated the situation of the engine chamber wall that scribbles ceramic layer truly, thereby accurately measures the transient temperature of chamber wall ceramic surface.This research to adiabatic engine is significant.
Fig. 1 of the present utility model is the structural drawing of film temperature sensor.
Fig. 2 is a sensor sensing head enlarged drawing
In the accompanying drawings, thermocouple sensor 6 is contained on the sensor body 4.Sensor output lead assembly 1 usefulness locking cap 5 is fixed on the sensor body 4.Two thermocouple wires 2,3 are housed on the sensitive element matrix 11, and these two thermocouple wires are connected with output lead assembly 1, are surrounded by one deck ceramic thick film 10 on the naked silk 13,14 of these two thermocouple wires, are coated with film 7 and film 9 on the ceramic thick film 10 respectively.Film 7 is connected with naked silk 14, and film 9 is a commaterial with naked silk 13, and film 9 is connected with naked silk 13, and film 7 is a commaterial with naked silk 14.Film 7 and film 9 junctions overlap, and constitute hot junction 8.
The method that thermocouple wire is contained on the sensitive element is, on the sensitive element matrix, bore two micropores, the thermocouple wire that is surrounded by ceramic insulating film is put into micropore, fix tightly, spraying plating one deck ceramic thick film on sensitive element matrix head, and it is polished, polishes, plate two films at last respectively on ceramic thick film, two films are connected with two thermocouple wires respectively.
Description of drawings:
1-sensor output lead assembly, 2-thermocouple wire, 3-thermocouple wire
4-sensor body, 5-locking cap, 6-thermocouple sensor
7-film, 8-hot junction, 9-film, 10-ceramic thick film
11-sensitive element matrix, 12-high temperature electric insulating film,
13, the naked silk of 14-.
Claims (2)
1, a kind of film temperature sensor.It is made up of sensor body and the sensitive element that is contained on the sensor body.Sensitive element by the sensitive element matrix, be plated in the film on the sensitive element head and be contained in the sensitive element matrix and form with the dielectric film thermocouple wire that has that film connects, it is characterized in that: two thermocouple wires of being made by different materials that have dielectric film are housed in the sensitive element, have one deck ceramic thick film on the sensitive element head, be coated with the film of two different materials on the ceramic thick film respectively, two film junctions overlap, two films link together with two thermocouple wires respectively, and thermocouple wire that links together and film are same material.
2, according to the described film temperature sensor of claim 1, it is characterized in that: the dielectric film on the thermocouple wire is a ceramic membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216022 CN2041425U (en) | 1988-11-11 | 1988-11-11 | Film temp. sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216022 CN2041425U (en) | 1988-11-11 | 1988-11-11 | Film temp. sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2041425U true CN2041425U (en) | 1989-07-19 |
Family
ID=4848723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88216022 Withdrawn CN2041425U (en) | 1988-11-11 | 1988-11-11 | Film temp. sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2041425U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245430A (en) * | 2013-05-02 | 2013-08-14 | 大连交通大学 | Needle-like coaxial thin-film thermocouple for measuring transient temperature |
| CN108007595A (en) * | 2017-11-21 | 2018-05-08 | 西北工业大学 | A kind of sonde-type thin-film thermocouple temperature sensor and preparation method thereof |
-
1988
- 1988-11-11 CN CN 88216022 patent/CN2041425U/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245430A (en) * | 2013-05-02 | 2013-08-14 | 大连交通大学 | Needle-like coaxial thin-film thermocouple for measuring transient temperature |
| CN108007595A (en) * | 2017-11-21 | 2018-05-08 | 西北工业大学 | A kind of sonde-type thin-film thermocouple temperature sensor and preparation method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |