CN108168737B - Special isolation clamping device for thin film thermocouple calibration - Google Patents
Special isolation clamping device for thin film thermocouple calibration Download PDFInfo
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- CN108168737B CN108168737B CN201810235377.3A CN201810235377A CN108168737B CN 108168737 B CN108168737 B CN 108168737B CN 201810235377 A CN201810235377 A CN 201810235377A CN 108168737 B CN108168737 B CN 108168737B
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- clamping
- furnace tube
- furnace
- sliding rod
- film thermocouple
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K15/00—Testing or calibrating of thermometers
- G01K15/005—Calibration
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a special isolation clamping device for thin film thermocouple calibration, which comprises: the furnace tube sealing cover is fixed at the upper end of the furnace tube of the thermometer measuring furnace; one end of the bracket is fixed on the surface of the furnace tube sealing cover, and the other end of the bracket is fixedly connected with the guide cylinder; the center of the guide cylinder is fixedly aligned with the center of the furnace tube sealing cover surface; the sliding rod extends out of the furnace tube sealing cover, the upper end of the sliding rod is arranged in the guide cylinder, and the position of the film thermocouple to be measured in the furnace tube of the temperature measuring furnace can be adjusted by changing the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace; and the clamping structure is fixed at the lower end of the sliding rod and can adjust the force for clamping the film thermocouple to be tested. And the clamping structure is fixed at the lower end of the sliding rod and can adjust the position of the sliding clamping piece so as to clamp the film thermocouples to be tested in different sizes. The invention has the characteristics of realizing the separation of the cold end and the hot end of the film thermocouple, reducing the adverse effect of the external environment on the stability of the temperature field in the temperature measuring furnace and avoiding the falling of the compensation lead.
Description
Technical Field
The invention belongs to the technical field of temperature measurement, and particularly relates to a special isolation clamping device for thin film thermocouple calibration.
Background
Today, the rapid development of science and technology, the low dimension of various materials has become one of the important trends of the development of material science, a large number of thin film materials with different functions have been increasingly used in industrial production, and the thin film thermocouple temperature sensor is a novel sensor which appears along with the development of the thin film material technology. Compared with the common bulk thermocouple, the thin film thermocouple has typical two-dimensional characteristics, and the thickness of a thermal junction is in the micro-nano level, so that the thin film thermocouple has the advantages of small heat capacity, quick response and the like, and can accurately measure transient temperature change. As the film preparation technology is diversified, the performance characterization of the thermocouple film is more important, and the reliability of the performance characterization experiment is directly related to whether the development of the film thermocouple temperature sensor is successful or not, so that the research of the film thermocouple calibration method occupies a very important position in the research of the film thermocouple calibration method. Currently, sensor calibration is one of domestic research hotspots on thin film thermocouple temperature sensors.
However, since the thin film sensor is a nonstandard temperature measuring device, in order to accurately measure the change of the transient temperature, in the process of developing the thin film sensor, it is required to evaluate whether the performance of accurately acquiring the temperature of the measuring point is achieved. When the thin film thermocouple is calibrated, the cold end and the hot end of the thin film thermocouple are required to be in different temperature fields, but the thin film thermocouple is smaller in size and difficult to realize; the size of the film thermocouple is limited, the film thermocouple is required to be placed at the furnace mouth of the temperature measuring furnace when the film thermocouple is calibrated, and the open environment at the position of the furnace mouth enables the temperature field to be easily influenced by the external environment, so that the calibration accuracy is influenced; repeated pick and place operations at hand calibration may result in the removal of the compensating lead. There is a need for a method that overcomes the above-described problems.
Disclosure of Invention
In view of the defects existing in the prior art, the invention aims to provide the special isolation clamping device for calibrating the film thermocouple, which has the characteristics of being capable of realizing the separation of the cold end and the hot end of the film thermocouple, reducing the adverse effect of the external environment on the stability of the temperature field in the temperature measuring furnace and avoiding the falling of a compensation lead.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model provides a special isolation clamping device is markd to film thermocouple which characterized in that includes:
the furnace tube sealing cover is fixed at the upper end of the furnace tube of the thermometer measuring furnace;
one end of the bracket is fixed on the surface of the furnace tube sealing cover, and the other end of the bracket is fixedly connected with the guide cylinder;
the center of the guide cylinder is fixedly aligned with the center of the furnace tube sealing cover surface;
the sliding rod extends out of the furnace tube sealing cover, the upper end of the sliding rod is arranged in the guide cylinder, and the position of the film thermocouple to be measured in the furnace tube of the temperature measuring furnace can be adjusted by changing the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace;
and the clamping structure is fixed at the lower end of the sliding rod and can adjust the position of the sliding clamping piece so as to clamp the film thermocouples to be tested in different sizes.
Further, the furnace tube cover has:
the first end face is buckled on the end face of the furnace tube of the temperature measuring furnace;
the second end face is inserted into the temperature measuring furnace tube and is tightly attached to the inner wall of the temperature measuring furnace tube;
and the furnace tube sealing cover through hole penetrates through the first end face and the second end face so as to enable the sliding rod to pass through and be inserted into the furnace tube of the temperature measuring furnace.
Further, a sealing piece which is clamped on the sliding rod is arranged on the furnace tube sealing cover through hole so as to ensure the sealing performance of the hearth of the temperature measuring furnace.
Further, the furnace tube cover further has:
and a gasket disposed at a transition portion of the first end face and the second end face.
Further, a positioning component for fixing the sliding rod when determining the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace is arranged on the wall of the guide tube.
Further, the upper end of the sliding rod is provided with a stop pin which limits the movement of the sliding rod to play a limiting role.
Further, the clamping structure has:
a clamp rail fixed to a lower end of the slide bar;
a clamping distance fixing member fixed to the clamping rail;
the clamping distance adjusting piece is used for clamping the film thermocouples to be tested in different sizes by adjusting the positions of the sliding clamping pieces;
and the bolt structure penetrates through the clamping distance fixing piece and the clamping distance adjusting piece and fixes the position of the clamping distance adjusting piece on the clamping guide rail when the clamping distance is adjusted to be in accordance with the clamping distance.
Compared with the prior art, the invention has the beneficial effects that:
the technical scheme of the invention can enable the cold end and the hot end of the clamped film thermocouple to be in different temperature fields, and overcomes the difficulty of calibrating the micro size of the film thermocouple; the structure of the furnace tube sealing cover and the sealing sheet is adopted, so that the environment of the thermometer measuring furnace is sealed, and the stability of a temperature field in the furnace can be maintained; in addition, the calibration experiment can be completed through one-time clamping, the taking and placing times of the film thermocouple are reduced, the falling of the film thermocouple compensation lead is avoided, the experiment process can be accelerated, and the experiment efficiency is improved. In conclusion, the method can be widely applied to the field of thin film thermocouple calibration.
Drawings
FIG. 1 is a schematic diagram of a special clamping device for calibrating a film thermocouple;
FIG. 2 is a schematic illustration of two closure tab configurations designed for different shaped thermocouples;
FIG. 3 is a clamping structure according to the present invention;
FIG. 4 is a detailed view of the mounting of the gamma-ray bracket of the present invention to the upper end of a thermometer-type furnace tube.
In the figure: 1. furnace tube sealing covers, 2, sealing sheets, 3, gamma-shaped brackets, 4, guide cylinders, 5, fastening screws, 6, sliding rods, 7, stop pins, 8, furnace tube sealing cover through holes, 9, asbestos washers, 10, sliding clamping sheets, 11, fixing clamping sheets, 12, fastening bolts, 13, fastening nuts, 14 and clamping guide rails.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The special clamping device for calibrating the film thermocouple as shown in fig. 1 is characterized by comprising:
the furnace tube sealing cover 1 is fixed at the upper end of the furnace tube of the thermometer measuring furnace;
one end of the gamma-shaped bracket 3 is fixed on the surface of the furnace tube sealing cover, and the other end of the gamma-shaped bracket is fixedly connected with the guide cylinder 4;
the center of the guide cylinder 4 is fixedly aligned with the center of the furnace tube sealing cover surface;
a sliding rod 6 which extends out from the furnace tube sealing cover, the upper end of which is arranged in the guide cylinder, and the position of the film thermocouple to be measured in the furnace tube of the temperature measuring furnace can be adjusted by changing the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace;
and the clamping structure is fixed at the lower end of the sliding rod and can adjust the position of the sliding clamping piece so as to clamp the film thermocouples to be tested in different sizes.
Further, the furnace tube cover 1 includes: the first end face is buckled on the end face of the furnace tube of the temperature measuring furnace; the second end face is inserted into the temperature measuring furnace tube and is tightly attached to the inner wall of the temperature measuring furnace tube; and a furnace tube cover through hole 8 penetrating through the first end face and the second end face for the sliding rod to pass through and be inserted into the furnace tube of the temperature measuring furnace. Further, a sealing piece which is clamped on the sliding rod is arranged on the furnace tube sealing cover through hole so as to ensure the sealing performance of the furnace chamber of the temperature measuring furnace; the sealing piece is two sealing pieces 2 placed on the furnace tube sealing cover through hole 8, and as shown in fig. 2, the shapes of the two sealing pieces 2 can be changed according to the shape of a film thermocouple. Further, the furnace tube cover further has: a gasket disposed at a transition of the first and second end surfaces; preferably, the gasket is a furnace tube-capped asbestos gasket 9. The invention adopts the structure of the furnace tube sealing cover and the sealing sheet, so that the environment in the temperature measuring furnace is sealed, the adverse effect of the external environment on the stability of the temperature field in the furnace is reduced, meanwhile, the cold end and the hot end of the film thermocouple can be isolated, the cold end and the hot end are positioned in different temperature fields, and the difficulty of micro-size calibration of the film thermocouple is overcome. Meanwhile, the universality of the temperature measuring furnaces with different inner diameters can be improved by adding corresponding specification sleeves outside the circular tube structure at the lower part of the furnace tube sealing cover.
Further, a positioning component for fixing the sliding rod when determining the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace is arranged on the wall of the guide tube 4; the positioning component is a fastening screw 5.
Further, a stop pin 7 for limiting the movement of the sliding rod is arranged at the upper end of the sliding rod 6 to play a limiting role.
Further, as shown in fig. 3, the clamping structure has:
a clamp rail 14 fixed to the lower end of the slide bar 6;
a clamping distance fixing member fixed to the clamping rail;
a clamping distance adjusting member for clamping the film thermocouples to be measured in different sizes by adjusting the position of the sliding clamping piece 10;
the bolt structure comprises a fastening bolt 12 and a fastening nut 13, wherein the fastening bolt 12 penetrates through the clamping distance fixing piece and the clamping distance adjusting piece, and when the clamping distance is adjusted to be in accordance with the clamping distance, the fastening nut 13 fixes the position of the clamping distance adjusting piece on the clamping guide rail.
Further, the clamping force fixing part is a fixing clamping piece 11, a through hole is formed in the fixing clamping piece 11, the clamping force adjusting part is a sliding clamping piece 10, a fastening bolt 12 is fixedly connected to the sliding clamping piece, and the fastening bolt 12 penetrates through the through hole in the fixing clamping piece 11 and is fixed through a fastening nut 13.
The specific operation process is as follows: as shown in fig. 4, when the thin film thermocouple is calibrated, the whole device is placed on a furnace tube of the temperature measuring furnace, so that the second end face of the furnace tube sealing cover 1 is clamped on the inner wall of the furnace tube, and the asbestos washer 9 is positioned between the furnace tube sealing cover 1 and the outer wall of the temperature measuring furnace; the lower end of the fastening screw 5 on the side surface of the guide cylinder 4 is tightly propped against the sliding rod 6 positioned in the guide cylinder 4 to realize positioning, and the sliding rod 6 is provided with a stop pin 7 for preventing the sliding rod 6 from falling off so as to prevent falling off; the sliding rod 6 passes through the furnace tube sealing cover through hole 8, and meanwhile, a lead of the thermocouple is led out through the furnace tube sealing cover through hole 8 and is clamped on the sliding rod 6 through two sealing sheets 2 arranged on the furnace tube sealing cover through hole 8 so as to ensure the sealing performance of a hearth; the lower part of the sliding rod 6 is fixedly connected with a clamping guide rail 14, the other end of the clamping guide rail 14 is fixedly connected with a fixing clamping piece 11, the fixing clamping piece 11 is provided with a through hole, the clamping guide rail 14 is provided with a sliding clamping piece 10, the sliding clamping piece 10 is fixedly connected with a fastening bolt 12, and the fastening bolt 12 penetrates through the through hole of the fixing clamping piece 10 and is fixed by a fastening nut 13. In the calibration experiment, a thin film thermocouple sample is placed between the sliding clamping piece 10 and the fixed clamping piece 11, and the fastening nut 13 is screwed to fix the sample. The invention can realize the separation of the cold end and the hot end of the film thermocouple, reduce the adverse effect of the external environment on the stability of the temperature field in the temperature measuring furnace, reduce the times of taking and placing the film thermocouple and avoid the falling of the compensation lead, thereby being widely applied to the field of calibration of the film thermocouple.
As can be seen from the above, the invention designs the special clamping device for calibrating the film thermocouple, which fixes the film thermocouple by adopting a mechanical clamping design, controls the depth of entering a hearth by utilizing the adjustable sliding device, improves the standardization and the strictness of the calibration experiment, for example, a sliding rod passes through a guide cylinder at the upper end of a gamma-shaped bracket, a fastening screw on the guide cylinder locks the sliding rod, and a film thermocouple clamping structure is fixedly connected at the lower part of the sliding rod passing through a furnace tube sealing cover through hole; the structure of the furnace tube sealing cover and the sealing sheet is utilized to seal the environment in the temperature measuring furnace, reduce the adverse effect of the external environment on the stability of the temperature field in the furnace, and simultaneously isolate the cold end and the hot end of the film thermocouple so as to enable the film thermocouple to be in different temperature fields, thereby overcoming the difficulty of calibrating the micro size of the film thermocouple, adopting a simple and reliable clamping mechanism, reducing the taking and placing times of the film thermocouple and avoiding the falling of the film thermocouple compensation lead.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (6)
1. The utility model provides a special isolation clamping device is markd to film thermocouple which characterized in that includes:
the furnace tube sealing cover is fixed at the upper end of the furnace tube of the thermometer measuring furnace;
one end of the bracket is fixed on the surface of the furnace tube sealing cover, and the other end of the bracket is fixedly connected with the guide cylinder;
the center of the guide cylinder is fixedly aligned with the center of the furnace tube sealing cover surface;
the sliding rod extends out of the furnace tube sealing cover, the upper end of the sliding rod is arranged in the guide cylinder, and the position of the film thermocouple to be measured in the furnace tube of the temperature measuring furnace can be adjusted by changing the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace;
and a clamping structure fixed to the lower end of the sliding rod and capable of adjusting a position of the sliding clamping piece to clamp the film thermocouples to be measured in different sizes, the clamping structure having:
a clamping guide rail fixed to the lower end of the slide bar,
a clamping distance fixing piece which is fixed on the clamping guide rail,
a clamping distance adjusting piece which is used for clamping the film thermocouples to be tested with different sizes by adjusting the positions of the sliding clamping pieces,
a bolt structure penetrating the clamping distance fixing member and the clamping distance adjusting member and fixing the position of the clamping distance adjusting member on the clamping guide rail when the clamping distance is adjusted to a clamping distance conforming to the requirement,
the clamping distance adjusting piece is a sliding clamping piece, a fastening bolt is fixedly connected to the sliding clamping piece, and the fastening bolt penetrates through the through hole in the fixing clamping piece and is fixed by a fastening nut.
2. The special isolation clamping device for calibrating the film thermocouple according to claim 1, wherein the special isolation clamping device comprises the following components:
the furnace tube cover has:
the first end face is buckled on the end face of the furnace tube of the temperature measuring furnace;
the second end face is inserted into the temperature measuring furnace tube and is tightly attached to the inner wall of the temperature measuring furnace tube;
and the furnace tube sealing cover through hole penetrates through the first end face and the second end face so as to allow the sliding rod to penetrate through and be partially inserted into the furnace tube of the temperature measuring furnace.
3. The special isolation clamping device for calibrating the film thermocouple according to claim 2, wherein the special isolation clamping device is characterized in that:
and a sealing piece which is clamped on the sliding rod and used for ensuring the sealing performance of the hearth of the temperature measuring furnace is arranged on the furnace tube sealing cover through hole.
4. The special isolation clamping device for calibrating the film thermocouple according to claim 2, wherein the special isolation clamping device is characterized in that:
the furnace tube cover also has:
and a gasket disposed at a transition portion of the first end face and the second end face.
5. The special isolation clamping device for calibrating the film thermocouple according to claim 1, wherein the special isolation clamping device comprises the following components:
the cylinder wall of the guide cylinder is provided with a positioning component for fixing the sliding rod when the length of the sliding rod inserted into the furnace tube of the temperature measuring furnace is determined.
6. The special isolation clamping device for calibrating the film thermocouple according to claim 1, wherein the special isolation clamping device comprises the following components:
the upper end of the sliding rod is provided with a stop pin which limits the movement of the sliding rod to play a limiting role.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235377.3A CN108168737B (en) | 2018-03-21 | 2018-03-21 | Special isolation clamping device for thin film thermocouple calibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810235377.3A CN108168737B (en) | 2018-03-21 | 2018-03-21 | Special isolation clamping device for thin film thermocouple calibration |
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| CN108168737A CN108168737A (en) | 2018-06-15 |
| CN108168737B true CN108168737B (en) | 2023-05-26 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110657902B (en) * | 2019-11-15 | 2021-07-23 | 大连交通大学 | Multifunctional clamping device for calibration of sheet-shaped thin-film thermocouple sensor |
| CN112345107B (en) * | 2020-12-02 | 2023-05-19 | 中北大学 | Temperature measuring device integrated with film thermocouple and micro-transducer and preparation method thereof |
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