CN115752781A - High-temperature high-pressure surface tungsten-rhenium thermocouple - Google Patents
High-temperature high-pressure surface tungsten-rhenium thermocouple Download PDFInfo
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- CN115752781A CN115752781A CN202211332571.6A CN202211332571A CN115752781A CN 115752781 A CN115752781 A CN 115752781A CN 202211332571 A CN202211332571 A CN 202211332571A CN 115752781 A CN115752781 A CN 115752781A
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Abstract
The invention relates to the technical field of thermocouples, in particular to a high-temperature and high-pressure surface tungsten-rhenium thermocouple, which comprises a tungsten-rhenium thermocouple wire, ceramics, a bolt, a corundum core, a male screw, a thermocouple lead and a thermocouple plug.
Description
Technical Field
The invention relates to the technical field of thermocouples, in particular to a high-temperature and high-pressure surface tungsten-rhenium thermocouple.
Background
The W-Re thermocouple has the advantages of good linear relation between temperature and potential, reliable heat stability, etc. and may be used in conjunction with display instrument to measure the temperature of liquid, steam, gas medium, etc. At present, transient temperature changes such as explosion temperature measurement and engine tail gas temperature measurement are required to be measured in various industries and working conditions, and the common characteristics of the transient temperatures are high temperature, quick change, strong impact and unrepeatable one-time process.
The traditional thermocouple temperature measurement is limited, although a common armored thermocouple and the like can be used in the environments of shock resistance and impact resistance, the highest temperature measurement is only 1200 ℃, and the use in the environment of over 1200 ℃ cannot be met.
Although the temperature of the existing tungsten-rhenium thermocouple can reach 2000 ℃, the structure of the existing tungsten-rhenium thermocouple has poor shock resistance and impact resistance, and the structures such as an insulating ceramic core and the like in the existing tungsten-rhenium thermocouple are easy to be damaged by shock when the existing tungsten-rhenium thermocouple is used.
Disclosure of Invention
The invention aims to provide a high-temperature and high-pressure surface tungsten-rhenium thermocouple, which aims to solve the technical problems that although the temperature measurement of the existing tungsten-rhenium thermocouple in the prior art can reach 2000 ℃, the structure of the existing tungsten-rhenium thermocouple is poor in shock resistance and impact resistance, and the structures such as an insulating ceramic core in the existing tungsten-rhenium thermocouple are easily damaged by shock when the existing tungsten-rhenium thermocouple is used.
In order to achieve the above purpose, the invention provides a high-temperature and high-pressure surface tungsten-rhenium thermocouple, which comprises a tungsten-rhenium thermocouple wire, ceramics, a bolt, a corundum core, a male screw, a thermocouple lead and a thermocouple plug, wherein the ceramics is wrapped on the outer side of the tungsten-rhenium thermocouple wire, the ceramics is arranged in the bolt, the corundum core is wrapped on the outer side of the tungsten-rhenium thermocouple wire and is positioned above the ceramics, the male screw is detachably connected with the bolt and is positioned on the outer side of the corundum core, the thermocouple lead is connected with the tungsten-rhenium thermocouple wire and is positioned above the male screw, and the thermocouple plug is connected with the thermocouple lead and is positioned at one end of the thermocouple lead, which is far away from the male screw.
The high-temperature and high-pressure surface tungsten-rhenium thermocouple also comprises an insulating backing ring, wherein the insulating backing ring is detachably connected with the bolt and is positioned between the ceramic and the corundum core.
The high-temperature and high-pressure surface tungsten-rhenium thermocouple also comprises high-temperature glue, and the high-temperature glue is used for insulating and sealing the tungsten-rhenium thermocouple wire and the male screw.
The high-temperature and high-pressure surface tungsten-rhenium thermocouple further comprises a spring, wherein the spring is fixedly connected with the male screw and sleeved on the outer side of the thermocouple lead.
The bolt is provided with an inner cavity, and the inner cavity is formed by communicating an upper T-shaped cavity and a lower T-shaped cavity.
Wherein the ceramic is alumina high-temperature resistant ceramic.
According to the high-temperature high-pressure surface tungsten-rhenium thermocouple, an integrated structure formed by the tungsten-rhenium thermocouple wire and the ceramic is placed in the inner cavity, the integrated structure is matched with a T-shaped cavity below the integrated structure, the corundum core is installed on the outer side of the tungsten-rhenium thermocouple wire, then the male screw is matched with the internal thread, the male screw is screwed above the bolt, the thermocouple lead is connected to the upper end of the male screw, and the thermocouple plug is installed at the tail end of the thermocouple lead.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a high-temperature high-pressure surface tungsten-rhenium thermocouple provided by the invention.
In the figure: 1-tungsten-rhenium couple wire, 2-ceramic, 3-bolt, 4-corundum core, 5-male screw, 6-thermocouple lead, 7-thermocouple plug, 8-insulating backing ring, 9-high temperature glue, 10-spring, 11-inner cavity, 12-external thread and 13-internal thread.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, the invention provides a high-temperature and high-pressure surface tungsten-rhenium thermocouple, which includes a tungsten-rhenium thermocouple wire 1, a ceramic 2, a bolt 3, a corundum core 4, a male screw 5, a thermocouple lead 6 and a thermocouple plug 7, wherein the ceramic 2 is wrapped on the outer side of the tungsten-rhenium thermocouple wire 1, the ceramic 2 is arranged inside the bolt 3, the corundum core 4 is wrapped on the outer side of the tungsten-rhenium thermocouple wire 1 and is located above the ceramic 2, the male screw 5 is detachably connected with the bolt 3 and is located on the outer side of the corundum core 4, the thermocouple lead 6 is connected with the tungsten-rhenium thermocouple wire 1 and is located above the male screw 5, and the thermocouple plug 7 is connected with the thermocouple lead 6 and is located at one end of the thermocouple lead 6, which is far away from the male screw 5.
Further, referring to fig. 1, the insulating backing ring 8 is detachably connected to the bolt 3 and is located between the ceramic 2 and the corundum core 4.
Further, referring to fig. 1, the high temperature glue 9 is used for insulating and sealing between the tungsten-rhenium couple wire 1 and the male screw 5.
Further, referring to fig. 1, the spring 10 is fixedly connected to the male screw 5 and sleeved outside the thermocouple lead 6.
Further, referring to fig. 1, the bolt 3 has an inner cavity 11, and the inner cavity 11 is formed by communicating an upper T-shaped cavity and a lower T-shaped cavity.
Further, referring to fig. 1, the ceramic 2 is an alumina refractory ceramic.
Further, referring to fig. 1, the bolt 3 has an external thread 12 and an internal thread 13, and the external thread 12 is located outside the lower end of the thread; the internal thread 13 is located inside the upper end of the bolt 3.
In this embodiment, the corundum core 4 is a high-purity corundum core, and is configured to prevent 2 internal thermocouple wires from contacting each other and block the contact between the internal thermocouple wires and an external metal, so as to avoid a short circuit, the ceramic 2 is made of an alumina high-temperature-resistant ceramic material, the tungsten-rhenium thermocouple wire 1 is placed in a special mold, an alumina high-temperature-resistant ceramic 2 material is wrapped on an outer layer of the tungsten-rhenium thermocouple wire, the tungsten-rhenium thermocouple wire is sintered at a high temperature of 1800 ℃, an outer surface of a sintered body is machined after sintering molding, two poles of the bottom thermocouple wire are welded together to form a thermocouple temperature sensing surface, and finally, the tungsten-rhenium thermocouple wire 1 and the ceramic 2 are integrated, the male screw 5 and the bolt 3 are both made of a GH3039 high-temperature alloy material, the bolt 3 is machined and provided with the inner cavity 11, the bolt 3 is penetrated through by the inner cavity 11, the inner cavity 11 is formed by communicating two upper and lower T-shaped cavities, and the spring 10 is configured to prevent the external thermocouple lead 6 from being broken, so as to protect the thermocouple lead 6.
When the invention is used, the tungsten-rhenium couple wire 1 and the ceramic 2 are sintered to form an integrated structure and are placed into the inner cavity 11, the integrated structure is matched with a T-shaped cavity at the lower part, the insulating backing ring 8 is arranged in the bolt 3, the insulating backing ring 8 enters the inner cavity 11 and is matched with a T-shaped cavity at the upper part, the corundum core 4 is arranged at the outer side of the tungsten-rhenium couple wire 1, the corundum core 4 is stopped above the insulating backing ring 8, then the male screw 5 is matched with the internal thread 13, the male screw 5 is screwed above the bolt 3 until the integrated structure of the insulating backing ring 8 and the lower end is pressed, then the thermocouple lead 6 is connected to the upper end of the male screw 5, the spring 10 is embedded into a hole at the upper end of the male screw 5, and finally the high-temperature glue 9 is filled for sealing and insulation, the thermocouple plug 7 is arranged at the tail end of the thermocouple lead 6, when the temperature measurement device is used for measuring temperature, the external thread 12 on the outer side of the lower end of the bolt 3 is screwed on a measured object, so that the temperature measurement device is convenient to install and use, the tungsten-rhenium thermocouple wire 1 and the ceramic 2 are sintered to form an integrated structure, the shock resistance and impact resistance of the tungsten-rhenium thermocouple wire are improved, the corundum core 4 and the insulating backing ring 8 are used for insulation and shock absorption protection, the male screw 5 and the bolt 3 are matched to tightly press the insulating backing ring 8 and are fixed through the high-temperature glue 9, the internal integrated structure is prevented from loosening and being damaged due to collision, the shock resistance and impact resistance of the tungsten-rhenium thermocouple are improved, and the tungsten-rhenium thermocouple is not easily damaged due to shock in the use process.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a high temperature high pressure surface tungsten rhenium thermocouple, characterized in that, includes tungsten rhenium couple silk, pottery, bolt, corundum core, public spiral shell, thermocouple lead wire and thermocouple plug, the outside parcel of tungsten rhenium couple silk has the pottery, the pottery sets up the inside of bolt, the corundum core parcel is in the outside of tungsten rhenium couple silk, and be located the top of pottery, public spiral shell with the bolt is dismantled to be connected, and is located the outside of corundum core, the thermocouple lead wire with tungsten rhenium couple silk is connected, and is located the top of public spiral shell, the thermocouple plug with the thermocouple lead wire is connected, and is located the thermocouple lead wire is kept away from the one end of public spiral shell.
2. The high temperature, high pressure surface tungsten-rhenium thermocouple of claim 1,
the high-temperature and high-pressure surface tungsten-rhenium thermocouple also comprises an insulating backing ring, wherein the insulating backing ring is detachably connected with the bolt and is positioned between the ceramic and the corundum core.
3. A high temperature, high pressure surface tungsten rhenium thermocouple as claimed in claim 2,
the high-temperature and high-pressure surface tungsten-rhenium thermocouple also comprises high-temperature glue, and the high-temperature glue is used for insulating and sealing the tungsten-rhenium thermocouple wire and the male screw.
4. A high temperature high pressure surface tungsten rhenium thermocouple as claimed in claim 3,
the high-temperature and high-pressure surface tungsten-rhenium thermocouple further comprises a spring, wherein the spring is fixedly connected with the male screw and sleeved on the outer side of the thermocouple lead.
5. A high temperature high pressure surface tungsten rhenium thermocouple according to claim 4,
the bolt is provided with an inner cavity, and the inner cavity is formed by communicating an upper T-shaped cavity and a lower T-shaped cavity.
6. A high temperature high pressure surface tungsten rhenium thermocouple as claimed in claim 5,
the ceramic is alumina high-temperature resistant ceramic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211332571.6A CN115752781A (en) | 2022-10-28 | 2022-10-28 | High-temperature high-pressure surface tungsten-rhenium thermocouple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211332571.6A CN115752781A (en) | 2022-10-28 | 2022-10-28 | High-temperature high-pressure surface tungsten-rhenium thermocouple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115752781A true CN115752781A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211332571.6A Pending CN115752781A (en) | 2022-10-28 | 2022-10-28 | High-temperature high-pressure surface tungsten-rhenium thermocouple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115752781A (en) |
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2022
- 2022-10-28 CN CN202211332571.6A patent/CN115752781A/en active Pending
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