CN218724833U - Tungsten-rhenium thermocouple - Google Patents
Tungsten-rhenium thermocouple Download PDFInfo
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- CN218724833U CN218724833U CN202122980913.2U CN202122980913U CN218724833U CN 218724833 U CN218724833 U CN 218724833U CN 202122980913 U CN202122980913 U CN 202122980913U CN 218724833 U CN218724833 U CN 218724833U
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Abstract
The utility model belongs to the technical field of the tungsten rhenium thermocouple, especially, novel tungsten rhenium thermocouple now proposes following scheme, glue including molybdenum tube, alundum pipe, tungsten rhenium silk, nonrust steel pipe, boron nitride powder and resin, the inboard at nonrust steel pipe is fixed to the molybdenum tube is coaxial, the one end of molybdenum tube extends to the outside of nonrust steel pipe, the coaxial nonrust steel pipe that runs through of tungsten rhenium silk extends to the inner chamber of molybdenum tube, the tungsten rhenium silk is located nonrust steel pipe and the inside one end outer wall parcel of molybdenum tube has the alundum pipe. The utility model discloses a be 20mm with the distance between the one end that tungsten rhenium wire is close to the molybdenum tube and the one end inner wall of molybdenum tube, can be so that the fritting furnace, the heating furnace temperature measurement is more accurate to the accuse.
Description
Technical Field
The utility model relates to a tungsten rhenium thermocouple technical field especially relates to a novel tungsten rhenium thermocouple.
Background
With the rapid development of national economy, thermocouple technology has been widely applied in various fields of economic construction with its unique advantages. The reliable operation of the tungsten-rhenium thermocouple is more prominent and important.
The thermocouples are of different types according to different temperature measuring environments, two forms of tungsten-rhenium bare wires and tungsten-rhenium thermocouples are generally used in the industry to measure the temperature in the high-temperature environment above 1800 ℃, and the temperature of the high-temperature section of the tungsten-rhenium bare wire is inaccurate and is easy to damage. The tungsten-rhenium thermocouple has the conditions that a temperature measuring point is unstable, a tungsten-rhenium wire joint is easy to oxidize and the like, the temperature measurement is inaccurate, the product quality of the company is influenced to a great extent, and a novel tungsten-rhenium thermocouple is needed for the purpose.
SUMMERY OF THE UTILITY MODEL
The utility model provides a novel tungsten rhenium thermocouple has solved the problem that exists among the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a novel tungsten rhenium thermocouple, includes that molybdenum tube, alundum pipe, tungsten rhenium silk, nonrust steel pipe, boron nitride powder and resin glue, the molybdenum tube is coaxial to be fixed in the inboard of nonrust steel pipe, the one end of molybdenum tube extends to the outside of nonrust steel pipe, the tungsten rhenium silk is coaxial to run through nonrust steel pipe and extend to the inner chamber of molybdenum tube, the one end outer wall parcel that the tungsten rhenium silk is located nonrust steel pipe and molybdenum tube inside has the alundum pipe, nonrust steel pipe is located with the inner chamber of molybdenum tube the outside packing of alundum pipe has the boron nitride powder, a port sealing connection of nonrust steel pipe has the resin glue.
In order to enable the whole device to achieve the effect of no leak points, a stainless steel sleeve is welded between the stainless steel pipe and the molybdenum pipe.
In order to put the tungsten-rhenium wire into the molybdenum tube and the stainless steel tube, the vertical section of the tungsten-rhenium wire is in a U-shaped structure.
In order to wrap the tungsten-rhenium wire, the vertical section of the corundum tube is arranged in an 8-shaped structure.
In order to enable the temperature measurement of the heating furnace, the distance between one end of the tungsten-rhenium wire close to the molybdenum tube and the inner wall of one end of the molybdenum tube is 20mm.
In the utility model, the water-saving device is provided with a water-saving valve,
1. the distance between one end of the tungsten-rhenium wire close to the molybdenum tube and the inner wall of one end of the molybdenum tube is 20mm, so that the temperature measurement of a sintering furnace and a heating furnace can be controlled more accurately;
2. the tungsten-rhenium wire is free from oxidation phenomenon by filling nitrogen and argon into the stainless steel tube of the molybdenum tube, so that the service life can be prolonged.
Drawings
Fig. 1 is an overall sectional view of a novel tungsten-rhenium thermocouple provided by the utility model;
fig. 2 is an enlarged view of a point a in fig. 1 of the novel tungsten-rhenium thermocouple provided by the present invention.
In the figure: 1. a molybdenum tube; 2. a corundum tube; 3. tungsten-rhenium wire; 4. a stainless steel sleeve; 5. a stainless steel tube; 6. boron nitride powder; 7. and (3) resin glue.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-2, a novel tungsten-rhenium thermocouple comprises a molybdenum tube 1, a corundum tube 2, a tungsten-rhenium wire 3, a stainless steel tube 5, boron nitride powder 6 and resin adhesive 7, wherein the molybdenum tube 1 is coaxially fixed on the inner side of the stainless steel tube 5, one end of the molybdenum tube 1 extends to the outer side of the stainless steel tube 5, the tungsten-rhenium wire 3 coaxially penetrates through the stainless steel tube 5 and extends into an inner cavity of the molybdenum tube 1, the corundum tube 2 wraps the outer wall of one end of the tungsten-rhenium wire 3, which is located inside the stainless steel tube 5 and the molybdenum tube 1, the boron nitride powder 6 is filled in the outer side of the stainless steel tube 5 and the molybdenum tube 1, and one port of the stainless steel tube 5 is hermetically connected with the resin adhesive 7.
A stainless steel sleeve 4 is welded between the stainless steel pipe 5 and the molybdenum pipe 1, and the stainless steel sleeve 4 is welded on the inner side of one end of the stainless steel pipe 5.
The vertical section of the tungsten-rhenium wire 3 is in a U-shaped structure, and the tungsten-rhenium wire 3 and the molybdenum tube 1 are coaxially arranged.
The vertical section of the corundum tube 2 is arranged in an 8-shaped structure, and the inner hole of the corundum tube 2 is matched with the diameter of the tungsten-rhenium wire 3.
The distance between one end of the tungsten-rhenium wire 3 close to the molybdenum tube 1 and the inner wall of one end of the molybdenum tube 1 is 20mm, so that the temperature measurement of the sintering furnace and the heating furnace is more accurate.
The working principle is as follows: when the thermocouple is used, the molybdenum tube 1 is welded on the stainless steel sleeve 4, the stainless steel sleeve 4 is welded on the stainless steel tube 5, whether a leak point exists or not is tested, nitrogen is filled in the molybdenum tube 1 and the stainless steel tube 5, then argon is filled, boron nitride powder 6 is filled in the molybdenum tube 1 and the stainless steel tube 5 in an argon environment, the joint of the tungsten-rhenium wire 3 is welded and inserted into the corundum tube 2, then the corundum tube 2 and the tungsten-rhenium wire 3 are integrally inserted into the molybdenum tube 1 and the stainless steel tube 5 filled with the boron nitride powder 6, the size is determined by using an auxiliary fixing tool, the distance between the welded joint of the tungsten-rhenium wire 3 and the molybdenum tube 1 is about 20mm, then the molybdenum tube 1 and the stainless steel tube 5 are filled with the boron nitride powder 6 and are compacted, and then one end of the stainless steel tube 5 is sealed by using resin adhesive 7, so that no air enters the thermocouple body.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (5)
1. A novel tungsten-rhenium thermocouple is characterized in that: the stainless steel tube comprises a molybdenum tube (1), a corundum tube (2), a tungsten-rhenium wire (3), a stainless steel tube (5), boron nitride powder (6) and resin adhesive (7), wherein the molybdenum tube (1) is coaxially fixed on the inner side of the stainless steel tube (5), one end of the molybdenum tube (1) extends to the outer side of the stainless steel tube (5), the tungsten-rhenium wire (3) coaxially penetrates through the stainless steel tube (5) and extends into the inner cavity of the molybdenum tube (1), the outer wall of one end, located inside the stainless steel tube (5) and the molybdenum tube (1), of the tungsten-rhenium wire (3) is wrapped by the corundum tube (2), the stainless steel tube (5) and the inner cavity of the molybdenum tube (1) are located on the outer side of the corundum tube (2) and are filled with the boron nitride powder (6), and one end opening of the stainless steel tube (5) is hermetically connected with the resin adhesive (7).
2. The novel tungsten-rhenium thermocouple of claim 1, characterized in that: and a stainless steel sleeve (4) is welded between the stainless steel pipe (5) and the molybdenum pipe (1).
3. The novel tungsten-rhenium thermocouple of claim 1, characterized in that: the vertical section of the tungsten-rhenium wire (3) is in a U-shaped structure.
4. The novel tungsten-rhenium thermocouple of claim 1, characterized in that: the vertical section of the corundum tube (2) is arranged in an 8-shaped structure.
5. The novel tungsten-rhenium thermocouple of claim 1, characterized in that: the distance between one end of the tungsten-rhenium wire (3) close to the molybdenum tube (1) and the inner wall of one end of the molybdenum tube (1) is 20mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122980913.2U CN218724833U (en) | 2021-11-30 | 2021-11-30 | Tungsten-rhenium thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122980913.2U CN218724833U (en) | 2021-11-30 | 2021-11-30 | Tungsten-rhenium thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218724833U true CN218724833U (en) | 2023-03-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122980913.2U Active CN218724833U (en) | 2021-11-30 | 2021-11-30 | Tungsten-rhenium thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218724833U (en) |
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2021
- 2021-11-30 CN CN202122980913.2U patent/CN218724833U/en active Active
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