Anti-corrosion thermocouple

Abstract

The utility model relates to an anti-corrosion thermocouple which comprises a base, an upper cover, a connecting seat and a universal assembly. The universal assembly is composed of a first ring frame and a second ring frame, the first ring frame is movably connected with the connecting base through a first shaft, the second ring frame is movably connected with the first ring frame through a second shaft, and the first shaft is perpendicular to the second shaft. The second ring frame is fixedly provided with a corrosion-resistant sleeve, and a thermocouple is installed in the sleeve. The upper cover is provided with an arc-shaped groove, an adjusting nut is movably connected in the groove and connected with a screw, the screw is connected with a movable ring through a rotating shaft, the movable ring is connected with one end of a sleeve, and the sleeve is hermetically connected with the base. During use, the base is fixed, and the adjusting nut is rotated to control the screw to stretch, so that the movable ring deflects to drive the sleeve to deflect; the position of the adjusting nut in the arc-shaped groove is moved, the deflection direction of the sleeve can be adjusted, and angle adjustment is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of thermocouple technology, specifically relating to a corrosion-resistant thermocouple. Background Technology

[0002] Thermocouples are widely used temperature-sensing elements in the field of temperature measurement. They can directly measure temperature and convert the temperature signal into a thermoelectric potential (TEP) signal. Subsequently, electrical instruments (secondary instruments) further convert the TEP signal into the actual temperature value of the measured medium. Although different types of thermocouples exhibit diverse shapes due to specific applications and requirements, their basic structure is generally similar, typically consisting of core components such as thermocouples, insulating sheaths, protective tubes, and junction boxes. Furthermore, thermocouples are usually used in conjunction with display instruments, recording instruments, and electronic controllers to meet various measurement and control needs.

[0003] In the petroleum industry, the special working environment necessitates the use of corrosion-resistant thermocouples. Furthermore, this field demands high measurement accuracy from thermocouples. However, currently available thermocouples often cannot be angled after installation, which limits their flexibility in complex operating conditions.

[0004] Chinese utility model patent CN219368967U discloses a corrosion-resistant thermocouple, relating to the field of thermocouple technology. It includes: a mounting base, a mounting groove formed on the top outer wall of the mounting base, a fixing frame slidably embedded in the inner wall of the mounting groove, a thermocouple body embedded in the inner wall of the fixing frame, the thermocouple body slidingly passing through the bottom of the inner wall of the mounting groove, and a fixing mechanism disposed within the fixing frame. The fixing mechanism includes a driving component, four sets of connecting rod sliding components, multiple fixing rods, and four fixing grooves. This corrosion-resistant thermocouple, placed in the mounting groove on the mounting base by the fixing frame, allows the driving component to drive each set of connecting rod sliding components to move synchronously, enabling multiple fixing rods to simultaneously enter each fixing groove. This quickly achieves the installation and disassembly of the thermocouple body, avoiding the cumbersome installation and disassembly process that requires multiple bolts to sequentially fix the flange on the thermocouple body, reducing installation efficiency. After installation, angle adjustment is not possible. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant thermocouple to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a corrosion-resistant thermocouple, comprising a base, on which a top cover is fixedly mounted. A universal assembly is movably mounted on the base via a connecting seat. The universal assembly includes a first ring frame and a second ring frame. The first ring frame is symmetrically provided with a first shaft, and the second ring frame is symmetrically provided with a second shaft. The first ring frame is movably connected to the connecting seat via the first shaft, and the second ring frame is movably connected to the first ring frame via the second shaft. The first shaft and the second shaft are perpendicular to each other. A corrosion-resistant sleeve is fixedly mounted on the second ring frame, and a thermocouple is fixedly mounted inside the corrosion-resistant sleeve. The top cover is provided with an arc-shaped groove, and an adjusting nut is movably connected to the arc-shaped groove. A screw is movably connected to the adjusting nut, and a movable ring is movably connected to the screw via a rotating shaft structure. The movable ring is movably connected to one end of the corrosion-resistant sleeve, and the corrosion-resistant sleeve is sealed to the base via a sealing element.

[0007] Preferably, one end of the screw is fixedly connected to a fixing member, the fixing member is provided with a pin, and the pin is inserted and fixed into the arc-shaped groove.

[0008] Preferably, the fastener is made of PPO.

[0009] Preferably, the sealing element has a convex ring, the corrosion-resistant sleeve surface has a concave ring, the convex ring and the concave ring are sealed and inserted together, and the sealing element is made of rubber.

[0010] Preferably, the corrosion-resistant sleeve is made of stainless steel.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] The universal joint of this utility model includes a first ring frame and a second ring frame. The first ring frame is movably connected to the connecting seat via a first shaft, and the second ring frame is movably connected to the first ring frame via a second shaft. The first shaft and the second shaft are perpendicular to each other, so that the universal joint forms a structure similar to a gyroscope. A corrosion-resistant sleeve is fixedly installed on the second ring frame, and a thermocouple is fixedly installed inside the corrosion-resistant sleeve. In use, the base is fixed in the test position. By rotating the adjusting nut, the extension and retraction of the screw is controlled. The screw acts on the movable ring, causing the movable ring to deflect, thereby driving the corrosion-resistant sleeve to deflect. Then, by moving the adjusting nut, the adjusting nut moves within the arc groove, adjusting the deflection direction of the corrosion-resistant sleeve, thus completing the angle adjustment operation. Attached Figure Description

[0013] Figure 1 This is a structural view of the present invention.

[0014] Figure 2 This is an exploded structural view of the present invention.

[0015] Figure 3 This is a structural view of the internal components of the base of this utility model.

[0016] Figure 4 This is a structural view of the base of this utility model.

[0017] The diagram is labeled as follows: base 1, top cover 2, connecting seat 3, universal assembly 4, first ring frame 5, second ring frame 6, first shaft 7, second shaft 8, corrosion-resistant sleeve 9, thermocouple 10, arc groove 11, adjusting nut 12, screw 13, rotating shaft structure 14, movable ring 15, seal 16, fixing part 17, pin 18, convex ring 19, concave ring 20. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example 1:

[0020] This utility model provides a corrosion-resistant thermocouple, including a base 1, on which a top cover 2 is fixedly installed. A universal assembly 4 is movably installed on the base 1 via a connecting seat 3. The universal assembly 4 includes a first ring frame 5 and a second ring frame 6. The first ring frame 5 is symmetrically provided with a first shaft 7, and the second ring frame 6 is symmetrically provided with a second shaft 8. The first ring frame 5 is movably connected to the connecting seat 3 via the first shaft 7, and the second ring frame 6 is movably connected to the first ring frame 5 via the second shaft 8. The first shaft 7 and the second shaft 8 are perpendicular to each other. A corrosion-resistant sleeve 9 is fixedly installed on the second ring frame 6, and a thermocouple 10 is fixedly installed inside the corrosion-resistant sleeve 9. The top cover 2 is provided with an arc-shaped groove 11, and an adjusting nut 12 is movably connected to the arc-shaped groove 11. A screw 13 is movably connected to the adjusting nut 12, and a movable ring 15 is movably connected to the screw 13 via a rotating shaft structure 14. The movable ring 15 is movably connected to one end of the corrosion-resistant sleeve 9, and the corrosion-resistant sleeve 9 is sealed to the base 1 via a sealing element 16. A fixing member 17 is fixedly connected to one end of the screw 13. The fixing member 17 has a pin 18, which is inserted and fixed into the arc-shaped groove 11. The fixing member 17 is made of PPO. The sealing member 16 has a raised ring 19, and the surface of the corrosion-resistant sleeve 9 has a concave ring 20. The raised ring 19 and the concave ring 20 are sealed and inserted together. The sealing member 16 is made of rubber. The corrosion-resistant sleeve 9 is made of stainless steel.

[0021] Through the above technical solution, the universal assembly 4 of this utility model includes a first ring frame 5 and a second ring frame 6. The first ring frame 5 is movably connected to the connecting seat 3 through a first shaft 7, and the second ring frame 6 is movably connected to the first ring frame 5 through a second shaft 8. The first shaft 7 and the second shaft 8 are perpendicular to each other, so that the universal assembly 4 forms a structure similar to a gyroscope. A corrosion-resistant sleeve 9 is fixedly installed on the second ring frame 6, and a thermocouple 10 is fixedly installed inside the corrosion-resistant sleeve. In use, the base 1 is fixed in the test position. By rotating the adjusting nut 12, the extension and retraction of the screw 13 is controlled. The screw 13 acts on the movable ring 15, causing the movable ring 15 to deflect, thereby driving the corrosion-resistant sleeve 9 to deflect. Then, by moving the adjusting nut 12, the adjusting nut 12 moves in the arc groove 11 to adjust the deflection direction of the corrosion-resistant sleeve 9, thus completing the angle adjustment operation.

[0022] Example 2:

[0023] This embodiment mainly consists of components such as a base 1, a top cover 2, a connecting seat 3, a universal joint 4, a corrosion-resistant sleeve 9, and a thermocouple 10. The base 1 serves as the mounting foundation for the entire device and is installed on the equipment or pipeline requiring temperature measurement using bolts or other fixing methods. The top cover 2 is fixed above the base 1 via threaded connections or snap-fit ​​methods, forming a protective outer shell. The connecting seat 3 is located between the base 1 and the universal joint 4, serving as a transitional connecting component.

[0024] The universal joint 4 is a key component for the thermocouple 10 to achieve multi-angle adjustment, and it adopts a double-ring frame structure design. The first ring frame 5 is rotatably connected to the connecting seat 3 via a symmetrically arranged first axis 7, allowing the first ring frame 5 to swing in the vertical direction. The second ring frame 6 is rotatably connected to the first ring frame 5 via a symmetrically arranged second axis 8, and the axis of the second axis 8 is perpendicular to the axis of the first axis 7, allowing the second ring frame 6 to swing in the horizontal direction. This dual-axis vertical arrangement structure gives the universal joint 4 motion characteristics similar to a gyroscope, enabling multi-directional angle adjustment.

[0025] The corrosion-resistant sleeve 9 is fixedly mounted on the second ring frame 6. It is made of corrosion-resistant material and has a thermocouple 10 temperature sensing element installed inside. One end of the corrosion-resistant sleeve 9 is sealed to the base 1 via a seal 16 to prevent corrosive media from entering. The other end is movably connected to the movable ring 15, which is connected to the screw 13 via a rotating shaft structure 14. The other end of the screw 13 is connected to an adjusting nut 12, which can slide within the arcuate groove 11 of the upper cover 2.

[0026] When adjusting the measuring angle of thermocouple 10, the operator can first loosen the adjusting nut 12, allowing it to slide into the desired position within the arc groove 11. Then, rotating the adjusting nut 12 causes the screw 13 to move axially via threaded transmission. The movement of the screw 13 causes the movable ring 15 to deflect, which in turn pushes the corrosion-resistant sleeve 9 through the universal joint 4 for angle adjustment. Due to the dual-axis structure design of the universal joint 4, the corrosion-resistant sleeve 9 can be freely adjusted in multiple directions to meet the temperature measurement requirements under different working conditions. After adjustment, tightening the adjusting nut 12 will fix the current angle.

[0027] The thermocouple 10 in this embodiment is particularly suitable for corrosive environments such as the petroleum industry. Its universal adjustment mechanism allows for flexible adjustment of the temperature measurement angle after installation, solving the problem of traditional thermocouples 10 being unable to be adjusted after installation. Simultaneously, the design of the corrosion-resistant sleeve 9 and the seal 16 effectively prevents corrosive media from damaging the internal thermocouple 10, improving the equipment's service life and measurement accuracy. The entire adjustment process is simple to operate, requiring no disassembly to complete multi-angle adjustments, greatly improving ease of use.

[0028] Example 3:

[0029] This embodiment mainly consists of a base 1, a top cover 2, a universal joint 4, and a corrosion-resistant sleeve 9. The universal joint 4 is movably mounted on the base 1 via a connecting seat 3. The universal joint 4 employs a double-layer structure design with a first ring frame 5 and a second ring frame 6. The first ring frame 5 is rotatably connected to the connecting seat 3 via symmetrically arranged first shafts 7, and the second ring frame 6 is rotatably connected to the first ring frame 5 via symmetrically arranged second shafts 8, with the first shafts 7 and second shafts 8 maintaining a perpendicular spatial relationship. This gyroscope-like structural design enables the universal joint 4 to have multi-directional adjustment capabilities.

[0030] A corrosion-resistant sleeve 9 is fixedly installed on the second ring frame 6, and a thermocouple 10 temperature sensing element is encapsulated inside the sleeve. An arc-shaped groove 11 is formed on the surface of the upper cover 2, and an adjusting nut 12 is movably connected in the groove. The adjusting nut 12 is threadedly connected to the screw 13, and the other end of the screw 13 is connected to the movable ring 15 through a rotating shaft structure 14. The movable ring 15 is movably connected to one end of the corrosion-resistant sleeve 9, so that the extension and retraction of the screw 13 can cause the sleeve to deflect at an angle.

[0031] One end of the screw 13 is fixedly connected to a specially designed fastener 17, which has a protruding pin 18 structure. After the angle of the corrosion-resistant sleeve 9 is adjusted by rotating the adjusting nut 12, the operator can insert the pin 18 of the fastener 17 into the arc-shaped groove 11 of the upper cover 2 to lock it in place. This plug-in fixing method can effectively prevent the screw 13 from shifting due to vibration or external force, ensuring the stability of the thermocouple 10's measuring angle.

[0032] In actual operation, the base 1 is first fixed in the measuring position. When the temperature measuring angle needs to be adjusted, first loosen the pin 18 of the fixing component 17, and then rotate the adjusting nut 12. The movement of the nut in the arc groove 11 will cause the screw 13 to generate axial displacement, which, through the transmission action of the movable ring 15, causes the corrosion-resistant sleeve 9 to generate a corresponding angular deflection. Due to the special structure of the universal assembly 4, the sleeve can be flexibly adjusted in multiple directions. After the angle is adjusted to the correct position, the pin 18 of the fixing component 17 is reinserted into the corresponding position of the arc groove 11 to complete the locking.

[0033] The key to this embodiment lies in the reliable fixation of the thermocouple 10 after angle adjustment achieved through the linkage mechanism of screw 13 and fixing component 17. The engagement of the pin 18 of fixing component 17 with the arc groove 11 not only provides mechanical limitation but also effectively absorbs vibration energy, preventing loosening during long-term use. Meanwhile, the dual-axis design of the universal assembly 4 ensures the flexibility and accuracy of angle adjustment, adapting to the temperature measurement needs of complex working conditions such as the petroleum industry.

[0034] Example 4:

[0035] In this embodiment, the base 1 is movably mounted with a universal joint 4 via a connecting seat 3. The universal joint 4 employs a double-layer structure design with a first ring frame 5 and a second ring frame 6. The first ring frame 5 is rotatably connected to the connecting seat 3 via symmetrically arranged first axes 7, and the second ring frame 6 is rotatably connected to the first ring frame 5 via symmetrically arranged second axes 8. The spatial arrangement of the first axes 7 and the second axes 8 maintains a mutually perpendicular relationship. This unique orthogonal axis arrangement gives the universal joint 4 gyroscope-like motion characteristics, enabling multi-degree-of-freedom angle adjustment.

[0036] A corrosion-resistant sleeve 9 is fixedly installed on the second ring frame 6, and a thermocouple 10 temperature sensing element is encapsulated inside the sleeve. The upper cover 2 is designed with an arc-shaped guide groove, in which a sliding adjusting nut 12 is fitted. The nut is threadedly engaged with the screw 13. The end of the screw 13 is connected to a movable ring 15 via a rotating shaft mechanism, and the movable ring 15 is in turn movably connected to the end of the corrosion-resistant sleeve 9. Through this linkage mechanism, rotating the adjusting nut 12 can drive the screw 13 to produce axial displacement, which in turn causes the movable ring 15 to deflect, ultimately achieving the angle adjustment of the corrosion-resistant sleeve 9.

[0037] Specifically, one end of the screw 13 is equipped with a fastener 17 made of PPO (polyphenylene oxide) material, which has a plug-in structure. After angle adjustment, the pins 18 of the fastener 17 can be inserted into the arc-shaped groove 11 of the upper cover 2 for positioning and locking. PPO material has excellent mechanical strength and dimensional stability, and its creep resistance ensures that the fastener 17 maintains a stable locking force during long-term use, effectively preventing the screw 13 from loosening due to vibration or temperature changes. At the same time, the good chemical corrosion resistance of PPO material allows it to adapt to harsh environments such as the petroleum industry, preventing the fastener 17 from failing due to media corrosion.

[0038] A sealing assembly is provided between the corrosion-resistant sleeve 9 and the base 1. This sealing structure prevents external corrosive media from entering the thermocouple 10. Through the multi-degree-of-freedom adjustment function of the universal joint 4, combined with the precise control of the screw 13-nut transmission mechanism, the operator can flexibly adjust the detection angle of the thermocouple 10 according to actual measurement needs. After adjustment, the reliable locking of the PPO fixing part 17 maintains the set angle, ensuring the stability of the measurement process. This design not only meets the angle adjustment requirements under complex working conditions but also ensures the long-term reliability and measurement accuracy of the measurement system.

[0039] Example 5:

[0040] In this embodiment, a universal joint 4 is movably mounted on the base 1 via a connecting seat 3. The universal joint 4 employs a gyroscope-like structural design, consisting of a first ring frame 5 and a second ring frame 6. The first ring frame 5 has two symmetrically arranged first axes 7, and the second ring frame 6 has two symmetrically arranged second axes 8, with the first axes 7 and second axes 8 arranged perpendicularly to each other. The first ring frame 5 is movably connected to the connecting seat 3 via the first axes 7, while the second ring frame 6 is movably connected to the first ring frame 5 via the second axes 8. This orthogonal axis design allows the universal joint 4 to rotate freely in multiple directions.

[0041] A corrosion-resistant sleeve 9 is fixedly installed on the second ring frame 6, and a thermocouple 10 measuring element is fixedly installed inside the sleeve. The upper cover 2 is designed with an arc-shaped guide groove, in which an adjusting nut 12 is movably installed. The adjusting nut 12 is threadedly engaged with the screw 13, and the end of the screw 13 is connected to the movable ring 15 through a rotating shaft structure 14. The movable ring 15 is movably connected to one end of the corrosion-resistant sleeve 9, so that the extension and retraction of the screw 13 can cause the corrosion-resistant sleeve 9 to deflect at an angle. The other end of the corrosion-resistant sleeve 9 is sealed to the base 1 through a sealing element 16.

[0042] The seal 16 is made of rubber and features a unique structural design including a raised ring 19 on its outer periphery. Correspondingly, a matching recessed ring 20 is provided on the mating face of the corrosion-resistant sleeve 9. When the seal 16 is mated with the corrosion-resistant sleeve 9, the raised ring 19 and the recessed ring 20 form a tight insertion fit. This convex-concave fit structure not only improves the sealing performance of the connection but also effectively prevents corrosive media from penetrating into the thermocouple 10. The elastic properties of the rubber material ensure that the seal 16 can adapt to thermal expansion and contraction under different operating conditions, maintaining a long-lasting sealing effect.

[0043] In practical applications, when the measuring angle of thermocouple 10 needs to be adjusted, the operator can change the extension length of screw 13 by rotating adjusting nut 12. The extension and retraction of screw 13 is transmitted to corrosion-resistant sleeve 9 through movable ring 15, causing it to deflect at a corresponding angle. At the same time, adjusting nut 12 can move within the arc groove 11 of upper cover 2, thereby changing the direction of the force and achieving precise control over the deflection direction of corrosion-resistant sleeve 9. The dual-axis structure design of universal assembly 4 ensures that thermocouple 10 can flexibly adjust its angle in multiple planes, meeting the measurement needs under complex working conditions.

[0044] The sealing structure design of this embodiment is particularly suitable for corrosive environments such as the petroleum industry. The tight fit between the convex ring 19 of the rubber seal 16 and the concave ring 20 of the corrosion-resistant sleeve 9 effectively prevents corrosive media from eroding the internal components of the thermocouple 10. Meanwhile, the universal adjustment mechanism allows for multi-angle adjustment of the thermocouple 10 after installation, greatly improving measurement flexibility and applicability. The entire device has a reasonable structure, is easy to operate, and can meet the requirements of high-precision temperature measurement.

[0045] Example 6:

[0046] This embodiment provides a corrosion-resistant thermocouple 10, the structure of which includes a base 1 and a top cover 2 fixedly mounted on the base 1. A universal joint 4 is movably mounted on the base 1 via a connecting seat 3. This universal joint 4 is specially designed to achieve multi-angle adjustment. The universal joint 4 consists of a first ring frame 5 and a second ring frame 6. The first ring frame 5 has a pair of symmetrically arranged first shafts 7, and the second ring frame 6 has a pair of symmetrically arranged second shafts 8. The first ring frame 5 is rotatably connected to the connecting seat 3 via the first shafts 7, and the second ring frame 6 is rotatably connected to the first ring frame 5 via the second shafts 8. The spatial arrangement directions of the first shafts 7 and the second shafts 8 are perpendicular to each other. This orthogonal axis design gives the universal joint 4 motion characteristics similar to a gyroscope.

[0047] A corrosion-resistant sleeve 9, made of stainless steel, is fixedly installed on the second ring frame 6. The sleeve has excellent corrosion resistance. A thermocouple 10, a temperature sensing element, is fixedly installed inside the corrosion-resistant sleeve 9, forming a sealed protective structure between the sleeve and the thermocouple 10. The upper cover 2 is designed with an arc-shaped guide groove, within which an adjusting nut 12 is movably connected. This nut forms a threaded engagement with a screw 13. The screw 13 is hinged to a movable ring 15 via a rotating shaft structure 14, and the movable ring 15 is movably connected to one end of the corrosion-resistant sleeve 9. The other end of the corrosion-resistant sleeve 9 is sealed to the base 1 via a sealing element 16, ensuring the airtightness of the measurement environment.

[0048] The working principle of the thermocouple 10 is as follows: When angle adjustment is required, the operator rotates the adjusting nut 12, causing the screw 13 to move axially through threaded transmission. The displacement of the screw 13 pushes the movable ring 15 to deflect. Due to the connection between the movable ring 15 and the corrosion-resistant sleeve 9, the sleeve deflects at an angle. At the same time, the adjusting nut 12 can slide within the arc-shaped groove 11 of the upper cover 2, changing the direction of the force, thereby achieving precise control over the deflection direction of the corrosion-resistant sleeve 9. The dual-axis structure design of the universal assembly 4 enables the corrosion-resistant sleeve 9 to achieve multi-degree-of-freedom adjustment in space. The coordinated rotation of the first ring frame 5 and the second ring frame 6 ensures the smoothness and accuracy of the adjustment process.

[0049] The corrosion-resistant stainless steel sleeve 9 provides reliable protection for the thermocouple 10. Stainless steel possesses excellent chemical corrosion resistance, effectively resisting the erosion of corrosive media commonly found in petroleum industry environments. Simultaneously, the high mechanical strength of stainless steel protects the internal thermocouple 10 element from mechanical damage. The fixed connection between the sleeve and the thermocouple 10 ensures accurate temperature sensing, while the sealing structure prevents corrosive media from penetrating the interior. The use of the universal adjustment mechanism in conjunction with the stainless steel sleeve allows the thermocouple 10 to meet the angle adjustment requirements under complex operating conditions while ensuring long-term stable operation in corrosive environments.

[0050] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0051] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A corrosion-resistant thermocouple, comprising a base, wherein a top cover is fixedly mounted on the base, characterized in that, The base is movably mounted with a universal assembly via a connecting seat. The universal assembly includes a first ring frame and a second ring frame. The first ring frame is symmetrically provided with a first shaft, and the second ring frame is symmetrically provided with a second shaft. The first ring frame is movably connected to the connecting seat via the first shaft, and the second ring frame is movably connected to the first ring frame via the second shaft. The first shaft and the second shaft are perpendicular to each other. A corrosion-resistant sleeve is fixedly mounted on the second ring frame. A thermocouple is fixedly mounted inside the corrosion-resistant sleeve. The upper cover is provided with an arc-shaped groove, and an adjusting nut is movably connected to the arc-shaped groove. A screw is movably connected to the adjusting nut. A movable ring is movably connected to the screw via a rotating shaft structure. The movable ring is movably connected to one end of the corrosion-resistant sleeve. The corrosion-resistant sleeve is sealed to the base via a sealing element.

2. The corrosion-resistant thermocouple according to claim 1, characterized in that, One end of the screw is fixedly connected to a fixing member, the fixing member is provided with a pin, and the pin is inserted and fixed into the arc-shaped groove.

3. The corrosion-resistant thermocouple according to claim 2, characterized in that, The fastener is made of PPO.

4. The corrosion-resistant thermocouple according to claim 1, characterized in that, The sealing element has a convex ring, and the surface of the corrosion-resistant sleeve has a concave ring. The convex ring and the concave ring are sealed and inserted together. The sealing element is made of rubber.

5. The corrosion-resistant thermocouple according to claim 1, characterized in that, The corrosion-resistant sleeve is made of stainless steel.

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