Flexible armored temperature measuring device for superconducting tape production

Abstract

The invention relates to a flexible armored temperature measuring device for superconducting tape production, and the device comprises two thermocouple wires. The corrugated pipe is arranged on the outer sides of the two thermocouple wires and used for protecting the thermocouple wires; the outer side of each thermocouple wire located in the corrugated pipe is sleeved with a plurality of insulating magnetic beads. The reducing joint is arranged at one end of the corrugated pipe and used for preventing the insulating magnetic bead from sliding out, and the ends, extending out of the reducing joint, of the two thermocouple wires are welded into a whole; the armored sleeve sleeves the outer side of the thermocouple wire and is welded and fixed with the other end of the corrugated pipe; and the two thermocouple wires extend out of the end part of the armored sleeve and then are connected with an instrument through high-temperature-resistant glass fiber wires. According to the invention, the corrugated pipe and the insulating magnetic beads form a flexible armoring structure, so that armoring deformation in a high-temperature environment is effectively adapted, and the phenomenon of abnormal temperature control caused by armoring deformation in a production process is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of high-temperature superconducting tape processing, in particular to a flexible armored temperature measuring device used for superconducting tape production. Background Art

[0002] In the field of high-temperature superconducting tape production, especially in the process of preparing second-generation high-temperature superconducting tape (YBCO film) by metal organic chemical vapor deposition (MOCVD), accurate temperature control is a key factor to ensure product quality and performance. These production processes are usually carried out in a high temperature environment of 800 to 900 degrees Celsius, requiring accurate measurement and control of the temperature of the tape surface to achieve efficient and stable production.

[0003] Existing temperature measurement devices usually use armored thermocouples. Although this structure provides a certain degree of protection, due to the difference in thermal expansion coefficient between the armored structure and the thermocouple wire, the armored structure may cause mechanical damage to the wire under long-term high temperature. This damage not only increases the replacement frequency of the temperature-control thermocouple, but also may cause abnormal temperature control, thus affecting the performance and output of the superconducting tape. In addition, frequent replacement of thermocouples also increases production costs and reduces production efficiency.

[0004] In addition, existing armored thermocouples are not flexible enough in high-temperature environments and have difficulty adapting to armor deformation, which is particularly prominent in the MOCVD process because the high temperature and chemical gases in the process may cause the performance of the armor material to deteriorate.

[0005] The present invention aims to solve the temperature control problem in the production process of high-temperature superconducting tapes in the prior art, and provides a flexible armor temperature measuring device for superconducting tape production, which can effectively adapt to armor deformation under high temperature environment, reduce temperature control abnormalities, reduce the frequency of thermocouple replacement, reduce production costs, and improve the stability of the production process.

[0006] Therefore, a flexible armored temperature measuring device for superconducting tape production is needed to address the deficiencies of the prior art. Summary of the invention

[0007] To this end, the technical problem to be solved by the present invention is to overcome the temperature control problem in the production process of high-temperature superconducting tapes in the prior art, and to provide a flexible armored temperature measuring device for superconducting tape production, which can accurately measure the temperature of the superconducting tape in a high-temperature environment, ensuring temperature control in the production process. The bellows and insulating magnetic beads constitute a flexible armor structure, which effectively adapts to the armor deformation in a high-temperature environment, reduces the temperature control abnormality caused by the armor deformation in the production process, reduces the replacement frequency of the temperature control thermocouples, reduces the production cost, and improves the stability of the production process.

[0008] In order to solve the above technical problems, the present invention provides a flexible armor temperature measuring device for superconducting tape production, comprising: Thermocouple wires, including two; A bellows is arranged outside the two thermocouple wires to protect the thermocouple wires; a plurality of insulating magnetic beads are sleeved outside each of the thermocouple wires inside the bellows; A reducer is arranged at one end of the bellows to prevent the insulating magnetic bead from sliding out, and one end of the two thermocouple wires extending out of the reducer is welded together; The armored sleeve is sleeved on the outside of the thermocouple wire and is welded and fixed to the other end of the corrugated pipe; the two thermocouple wires extend out of the ends of the armored sleeve and are connected to the instrument through the wire.

[0009] In one embodiment of the present invention, plaster and resin are encapsulated between the thermocouple wire and the armored sleeve to seal the inside of the armored sleeve. By encapsulating plaster and resin between the thermocouple wire and the armored sleeve, the inside of the armored sleeve is sealed, thereby enhancing the temperature and pressure resistance of the device.

[0010] In one embodiment of the present invention, the gypsum is made of calcium sulfate powder with a temperature resistance of 400° C. The calcium sulfate powder with a temperature resistance of 400° C. can remain stable at a temperature as high as 400° C. without decomposition or structural changes.

[0011] In one embodiment of the present invention, the bellows is a high temperature resistant vacuum bellows with a wall thickness of 1.5 mm. The use of the high temperature resistant vacuum bellows with a wall thickness of 1.5 mm enhances the temperature and pressure resistance of the bellows 2 and protects the thermocouple wire from the external environment.

[0012] In one embodiment of the present invention, the size of the head of the thermocouple wire after welding is less than 1.6 mm. This design enables the temperature measuring device to be more accurately inserted into a narrow space for temperature measurement, thereby improving the flexibility and accuracy of the measurement.

[0013] In one embodiment of the present invention, the diameter of the thermocouple wire is equal to 0.2 mm. The design of the diameter of the thermocouple wire facilitates more sensitive detection and control of the temperature of the temperature zone, making the temperature measurement more accurate and timely.

[0014] In one embodiment of the present invention, the length of the insulating magnetic beads is set according to actual needs. The length of the insulating magnetic beads is set according to actual needs, which provides flexibility and enables the temperature measuring device to adapt to superconducting tapes of different lengths and shapes.

[0015] In one embodiment of the present invention, the length of the bellows is greater than or equal to the length after being spliced ​​with the insulating magnetic beads. The length of the bellows is greater than or equal to the length after being spliced ​​with the insulating magnetic beads, which ensures the integrity and protection performance of the entire temperature measuring device and prevents the thermocouple wire from being exposed to a high temperature environment.

[0016] In a second aspect, in order to solve the above technical problems, the present invention provides a method for manufacturing a flexible armored temperature measuring device for superconducting tape production, comprising the following steps: Step 1) Pass the two thermocouple wires through the reducer in parallel, and weld the two thermocouple wires at the end extending out of the reducer. The diameter after welding cannot exceed 1.6mm. Step 2) On the two thermocouple wires at the other end of the reducer, place insulating magnetic beads on the outside of the two thermocouple wires; Step 3) Install a corrugated tube on the outside of the insulating magnetic bead; Step 4) Insert the thermocouple wire extending out of the corrugated tube into the armored casing, and then seal the inside of the armored casing with gypsum and sealing resin; Step 5) Weld and fix the two ends of the corrugated pipe to the reducer and the armored casing respectively; Step 6) Connect the thermocouple wire extending from the end of the armored sleeve to the wire by welding; Step 7) Connect the instrument via wires to measure temperature.

[0017] In one embodiment of the present invention, the length of the insulating magnetic beads after being spliced ​​outside the thermocouple wire is 150 mm, and the length of the corrugated tube is 150 mm.

[0018] The above technical solution of the present invention has the following beneficial effects compared with the prior art: The flexible armored temperature measuring device for superconducting tape production described in the present invention can accurately measure the temperature of superconducting tape in a high temperature environment, ensuring temperature control during the production process. The bellows and insulating magnetic beads constitute a flexible armor structure, which can maintain a certain strength and protection capability while adapting to different bending and twisting, effectively adapting to armor deformation in a high temperature environment, reducing the phenomenon of abnormal temperature control caused by armor deformation during the production process, reducing the frequency of replacing temperature control thermocouples, reducing production costs, and improving the stability of the production process. The method for making a flexible armored temperature measuring device simplifies the operation process, making the production of the temperature measuring device more convenient and efficient, reducing the possibility of operating errors, and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments of the present invention in conjunction with the accompanying drawings.

[0020] Figure 1 This is a schematic structural diagram of a flexible armored temperature measuring device for superconducting tape production in a preferred embodiment of the present invention; Figure 2 for Figure 1 A schematic diagram of the partial structure of the thermocouple wire and the bellows of the flexible armored temperature measuring device used in the production of superconducting tapes is shown; Figure 3 for Figure 1 The schematic diagram of the end surface structure of the thermocouple wire of the flexible armored temperature measuring device used in the production of superconducting tapes after the end is welded.

[0021] Explanation of the reference numerals in the specification: 1. Thermocouple wire; 2. Bellows; 3. Insulating magnetic beads; 4. Reducer; 5. Armored casing. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention. Embodiment 1

[0023] Reference Figure 1 As shown, the present invention provides a flexible armored temperature measuring device for superconducting tape production, comprising: Thermocouple wires 1, including two wires; The bellows 2 is arranged outside the two thermocouple wires 1 to protect the thermocouple wires 1; a plurality of insulating magnetic beads 3 are sleeved outside each of the thermocouple wires 1 inside the bellows 2; A reducer 4 is arranged at one end of the bellows 2 to prevent the insulating magnetic bead 3 from sliding out, and the ends of the two thermocouple wires 1 extending out of the reducer 4 are welded together; the design of the reducer 4 can prevent the thermocouple wire 1 from being pulled when the insulating magnetic bead 3 behind is insulated; The armored sleeve 5 is sleeved on the outside of the thermocouple wire 1 and is welded and fixed to the other end of the corrugated tube 2; the two thermocouple wires 1 extend out of the ends of the armored sleeve 5 and are connected to the instrument through wires. In this embodiment, the wires are high-temperature resistant glass fiber wires.

[0024] Furthermore, plaster and resin are encapsulated between the thermocouple wire 1 and the armored sleeve 5 to seal the inside of the armored sleeve 5. By encapsulating plaster and resin between the thermocouple wire and the armored sleeve, the inside of the armored sleeve 5 is sealed, and the temperature and pressure resistance of the device are enhanced.

[0025] The gypsum in this embodiment adopts calcium sulfate powder with a temperature resistance of 400°C. The calcium sulfate powder with a temperature resistance of 400°C can remain stable at a temperature of up to 400°C without decomposition or structural changes. By using calcium sulfate powder with a temperature resistance of 400°C as the gypsum material, the stability and service life of the temperature measuring device in a high temperature environment are improved.

[0026] Preferably, the bellows 2 is a high temperature resistant vacuum bellows with a wall thickness of 1.5 mm. The use of a high temperature resistant vacuum bellows with a wall thickness of 1.5 mm enhances the temperature and pressure resistance of the bellows 2 and protects the thermocouple wire 1 from the influence of the external environment.

[0027] Preferably, the diameter of the thermocouple wire 1 is equal to 0.2 mm. The diameter of the thermocouple wire 1 is equal to 0.2 mm, which is convenient for more sensitive detection and control of the temperature of the temperature zone, making the temperature measurement more accurate and timely.

[0028] In actual use, the spliced ​​length of the insulating magnetic beads 3 is set according to actual needs. The spliced ​​length of the insulating magnetic beads 3 is set according to actual needs, which provides flexibility and enables the temperature measuring device to adapt to superconducting tapes of different lengths and shapes.

[0029] In this embodiment, the length of the bellows 2 is equal to the length after being spliced ​​with the insulating magnetic beads 3. The length of the bellows 2 is greater than or equal to the length after being spliced ​​with the insulating magnetic beads 3, ensuring the integrity and protection performance of the entire temperature measuring device and preventing the thermocouple wire 1 from being exposed to a high temperature environment.

[0030] A flexible armored temperature measuring device for superconducting tape production based on the above-mentioned embodiment can accurately measure the temperature of the superconducting tape in a high-temperature environment, ensuring temperature control during the production process, and the bellows 2 and the insulating magnetic beads 3 constitute a flexible armor structure, which can maintain a certain strength and protection capability while adapting to different bending and twisting, and can effectively adapt to armor deformation in a high-temperature environment, reduce the temperature control abnormality caused by armor deformation during the production process, reduce the replacement frequency of temperature control thermocouples, reduce production costs, and improve the stability of the production process. The device reduces the replacement frequency of temperature control thermocouples, thereby reducing production costs. Embodiment 2

[0031] In order to solve the above technical problems, the present invention provides a method for manufacturing a flexible armored temperature measuring device for superconducting tape production, comprising the following steps: Step 1) Pass two thermocouple wires 1 through the reducer 4 in parallel, and weld the two thermocouple wires 1 at one end extending out of the reducer 4. The diameter after welding cannot exceed 1.6 mm. Step 2) On the two thermocouple wires 1 at the other end of the reducer 4, an insulating magnetic bead 3 is sleeved on the outside of the two thermocouple wires 1; Step 3) sleeve the corrugated tube 2 on the outside of the insulating magnetic bead 3; Step 4) inserting the thermocouple wire extending out of the corrugated tube 2 into the armored casing 5, and then sealing the inside of the armored casing 5 with gypsum and sealing resin; Step 5) Weld and fix the two ends of the corrugated pipe 2 to the reducer 4 and the armored casing 5 respectively; Step 6) connecting the thermocouple wire 1 extending from the end of the armored sleeve 5 to the wire by welding; Step 7) Connect the instrument via wires to measure temperature.

[0032] Through the above-mentioned production method, the operation process is simplified, making the production of the temperature measuring device simpler and more efficient, reducing the possibility of operating errors, improving production efficiency and product quality, reducing long-term operating costs, and enhancing the stability and safety of the device in high temperature environments.

[0033] In this embodiment, the length of the insulating magnetic beads 3 after being spliced ​​outside the thermocouple wire 1 is 150 mm, and the length of the corrugated tube 2 is 150 mm.

[0034] like Figure 3 As shown, the head diameter of the thermocouple wire 1 is less than 1.6 mm. This design enables the temperature measuring device to be more accurately inserted into a narrow space for temperature measurement, thereby improving the flexibility and accuracy of the measurement.

[0035] Obviously, the above embodiments are merely examples for clear explanation and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived from these are still within the protection scope of the invention.

Claims

1. A flexible armored temperature measuring device for superconducting tape production, characterized in that: include: Thermocouple wires, including two; A bellows, arranged outside the two thermocouple wires, for protecting the thermocouple wires; A plurality of insulating magnetic beads are sleeved on the outer side of each thermocouple wire located inside the corrugated tube; A reducer is arranged at one end of the bellows to prevent the insulating magnetic bead from sliding out, and one end of the two thermocouple wires extending out of the reducer is welded together; The armored sleeve is sleeved on the outside of the thermocouple wire and is welded and fixed to the other end of the corrugated pipe; the two thermocouple wires extend out of the ends of the armored sleeve and are connected to the instrument through the wire.

2. The flexible armored temperature measuring device for superconducting tape production according to claim 1 is characterized in that: Gypsum and resin are encapsulated between the thermocouple wire and the armored sleeve to seal the inside of the armored sleeve.

3. A flexible armored temperature measuring device for superconducting tape production according to claim 2, characterized in that: The gypsum is made of calcium sulfate powder which is temperature-resistant at 400°C.

4. A flexible armored temperature measuring device for superconducting tape production according to claim 1, characterized in that: The bellows is a high temperature resistant vacuum bellows with a wall thickness of 1.5 mm.

5. A flexible armored temperature measuring device for superconducting tape production according to claim 1, characterized in that: The size of the head of the thermocouple wire after welding is less than 1.6 mm.

6. A flexible armored temperature measuring device for superconducting tape production according to claim 1, characterized in that: The diameter of the thermocouple wire is equal to 0.2 mm.

7. A flexible armored temperature measuring device for superconducting tape production according to claim 1, characterized in that: The spliced ​​length of the insulating magnetic beads is set according to actual needs.

8. A flexible armored temperature measuring device for superconducting tape production according to claim 8, characterized in that: The length of the corrugated tube is greater than or equal to the length after being spliced ​​with the insulating magnetic beads.

9. A method for manufacturing a flexible armored temperature measuring device for superconducting tape production according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1) Pass the two thermocouple wires through the reducer in parallel, and weld the two thermocouple wires at the end extending out of the reducer. The diameter after welding cannot exceed 1.6mm. Step 2) On the two thermocouple wires at the other end of the reducer, place insulating magnetic beads on the outside of the two thermocouple wires; Step 3) Install a corrugated tube on the outside of the insulating magnetic bead; Step 4) Insert the thermocouple wire extending out of the corrugated tube into the armored casing, and then seal the inside of the armored casing with gypsum and sealing resin; Step 5) Weld and fix the two ends of the corrugated pipe to the reducer and the armored casing respectively; Step 6) Connect the thermocouple wire extending from the end of the armored sleeve to the wire by welding; Step 7) Connect the instrument via wires to measure temperature.

10. The manufacturing method according to claim 9, characterized in that: The length of the insulating magnetic beads after being spliced ​​outside the thermocouple wire is 150 mm, and the length of the corrugated tube is 150 mm.

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