Telescopic thermocouple

Abstract

The utility model provides a telescopic thermocouple which comprises an outer cylinder, the outer cylinder is provided with an assembly seat and an assembly port, the assembly port is fixedly provided with a sealing cover, the sealing cover is fixedly provided with a wiring terminal, a movable piece is movably installed in the outer cylinder, the movable piece is fixedly connected with a thermocouple, and the thermocouple is connected with the wiring terminal through a wire. The outer cylinder is fixedly connected with an air pressure connector and provided with an exhaust hole. During use, positive air pressure is input into the air pressure connector to enable the movable part to drive the thermocouple to stretch out, negative air pressure is input into the air pressure connector to enable the movable part to drive the thermocouple to retract when the thermocouple needs to retract, stretching of the thermocouple is controlled by controlling the input amount of the air pressure, and the measuring point position of the thermocouple is convenient to adjust.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of thermocouple, concretely relates to telescopic thermocouple. BACKGROUND

[0002] Telescopic thermocouple is a temperature sensing device that can flexibly adjust the temperature measurement position, especially suitable for industrial scenarios that require dynamic monitoring of temperature changes. This device, through its unique telescopic structure design, can quickly adjust the measurement point according to different process requirements, achieving accurate monitoring of the temperature field. Typical application scenarios include real-time monitoring of furnace temperature distribution in heat treatment processes, temperature detection of molten metal level, temperature gradient monitoring of chemical reaction processes, temperature field analysis of high-temperature equipment such as sintering furnaces, etc. Taking sintering furnace application as an example, telescopic thermocouple can reach different positions inside the furnace, real-time tracking of temperature change curve in the sintering process, providing key temperature data for process control. Its adjustable feature allows operators to flexibly select the best temperature measurement point according to material stacking conditions and thermal field distribution, ensuring the stability of sintering quality.

[0003] The utility model discloses a telescopic thermocouple, including thermocouple body and telescopic mechanism, the thermocouple is connected the telescopic mechanism by connecting assembly, the connecting assembly includes the pull plate, and one end of the pull plate is fixedly connected the telescopic mechanism, and the other end is connected the thermocouple, the thermocouple is close to the side of wiring end, and from the detection end to the wiring end direction is successively sleeved with telescopic sleeve, sleeve and sleeve connector, one end of the sleeve is connected the telescopic sleeve, and the other end is connected with the sleeve connector for protecting the thermocouple through the pull plate, the sleeve is connected with the sleeve connector through fastener, and the fastening of the pull plate and the sleeve is realized, the setting can avoid the fastener when fastening the sleeve to the thermocouple damage, simultaneously effectively reduce the risk of being damaged when the thermocouple is telescoped with the piston rod. But its structure is too complex, is not convenient for installation and maintenance. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing telescopic thermocouple to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: telescopic thermocouple, including outer tube, the outer tube is equipped with assembly seat, the outer tube is equipped with assembly mouth, the assembly mouth is fixedly installed with sealing cover, the sealing cover is fixedly installed with wiring terminal, the outer tube is movably installed with movable part, the movable part is fixedly connected with thermocouple, the thermocouple is connected with the wiring terminal through wire, the outer tube is fixedly connected with air pressure connector, the outer tube is equipped with exhaust hole.

[0006] Preferably, the movable part is provided with a sealing rubber ring.

[0007] Preferably, a sealing gasket is arranged between the assembly opening and the sealing cover.

[0008] Preferably, the wire is arranged in a spiral shape.

[0009] Compared with the prior art, the utility model has the beneficial effects that:

[0010] The utility model discloses a movable part is installed in the outer tube, and the movable part is fixedly connected with the thermocouple, and the outer tube is fixedly connected with the air pressure connector, and the outer tube is also provided with the exhaust hole, and the sealing cover is fixedly installed with the terminal, and the thermocouple is connected with the terminal through the wire, and the signal of the thermocouple is conveniently outputted, when using, the movable part drives the thermocouple to extend by inputting the positive air pressure to the air pressure connector, when needing the thermocouple to retract, the movable part drives the thermocouple to retract by inputting the negative air pressure to the air pressure connector, and the extension and retraction of the thermocouple are controlled by controlling the input amount of air pressure, and the measuring point of the thermocouple is conveniently adjusted. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure view of the utility model thermocouple retraction state.

[0012] Figure 2 It is the structure view of the utility model thermocouple extension state.

[0013] Figure 3 It is the section structure view of the utility model.

[0014] Figure 4 It is the internal structure view of the utility model.

[0015] Marked in the drawing: outer tube 1, assembly seat 2, assembly opening 3, sealing cover 4, terminal 5, movable part 6, thermocouple 7, wire 8, air pressure connector 9, exhaust hole 10, sealing rubber ring 11, sealing gasket 12. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be apparently and completely described below in conjunction with the drawings of the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.

[0017] Embodiment one:

[0018] As Figures 1-4As shown, the utility model provides telescopic thermocouple, including outer tube 1, outer tube 1 is equipped with assembly seat 2, outer tube 1 is equipped with assembly port 3, assembly port 3 is fixedly installed with sealing cover 4, sealing cover 4 is fixedly installed with terminal 5, movable mounting has movable part 6 in outer tube 1, movable part 6 is fixedly connected with thermocouple 7, and thermocouple 7 is connected with terminal 5 through wire 8, and outer tube 1 is fixedly connected with pressure connector 9, and outer tube 1 is equipped with exhaust hole 10. Movable part 6 is equipped with sealing rubber ring 11. Assembly port 3 and sealing cover 4 between setting up sealing washer 12. Wire 8 is set up spirally.

[0019] Through the above technical scheme, the utility model in outer tube 1 movable mounting has movable part 6, and movable part 6 is fixedly connected with thermocouple 7, and outer tube 1 is fixedly connected with pressure connector 9, and outer tube 1 is also equipped with exhaust hole 10, and sealing cover 4 is fixedly installed with terminal 5, and thermocouple 7 is connected with terminal 5 through wire 8, and it is convenient to output the signal of thermocouple 7, when using, by the input positive pressure of pressure connector 9, make movable part 6 drive thermocouple 7 stretch out, when needing thermocouple 7 to retract, by the input negative pressure of pressure connector 9, make movable part 6 drive thermocouple 7 retract, by the input amount of control pressure, then control the telescopic of thermocouple 7, it is convenient to adjust the measuring point position of thermocouple 7.

[0020] Example two:

[0021] As Figures 1-4 As shown, the outer tube 1 of the present embodiment serves as the main support structure, and has an inner movable part 6. The movable part 6 is fixedly connected with the thermocouple 7, realizing the telescopic movement of the thermocouple 7. The assembly seat 2 is arranged on the outer tube 1, used for fixing the entire device at the desired position. The assembly port 3 is arranged on the outer tube 1 and is closed by the sealing cover 4, ensuring the sealing of the internal environment. The terminal 5 is installed on the sealing cover 4, and the thermocouple 7 is connected with the terminal 5 through the wire 8, transmitting the temperature signal to the external equipment.

[0022] The pressure connector 9 is fixedly connected with the outer tube 1, used for connecting the external air source. When the thermocouple 7 needs to be stretched out, the positive pressure is inputted into the cylinder through the pressure connector 9, pushing the movable part 6 to move outward and driving the thermocouple 7 to stretch out. The exhaust hole 10 is designed to balance the air pressure in the cylinder, ensuring the smooth movement of the movable part 6. When the thermocouple 7 needs to be retracted, the negative pressure is applied through the pressure connector 9, making the movable part 6 drive the thermocouple 7 to retract. By accurately controlling the air pressure, the accurate adjustment of the stretching length of the thermocouple 7 can be realized.

[0023] The working principle of the embodiment is based on the principle of air pressure driving. When the external air source inputs compressed air into the cylinder through the air pressure joint 9, the air pressure in the cylinder rises, pushing the movable part 6 to move outward against the friction. The exhaust hole 10 plays a role in balancing the air pressure in this process, avoiding the accumulation of air pressure causing poor movement. The movement of the movable part 6 directly drives the thermocouple 7 to extend, making its temperature measuring end reach the designated position. When operating in reverse, the movable part 6 is retracted by negative pressure, driving the thermocouple 7 to retract. The entire process realizes flexible adjustment of the position of the thermocouple 7.

[0024] The signal transmission of the thermocouple 7 is realized through the wire 8. The thermoelectric potential signal generated by the temperature measuring end of the thermocouple 7 is transmitted to the terminal 5 on the sealing cover 4 through the wire 8, and then transmitted to the temperature display or control device through the external connecting line. This design ensures the reliability of signal transmission, and facilitates the installation and maintenance of the equipment. The sealing performance of the sealing cover 4 ensures that the internal components are not affected by the external environment.

[0025] The application advantages of the embodiment mainly lie in the convenience of operation and the accuracy of position adjustment. Through air pressure control, stepless adjustment of the thermocouple 7 can be realized, and the position of the temperature measuring point can be accurately controlled. Compared with the mechanical telescopic structure, air pressure driving has the characteristics of fast response speed and high adjustment accuracy. The setting of the exhaust hole 10 effectively solves the problem of air pressure balance, making the movement of the movable part 6 more stable and reliable.

[0026] Through air pressure driving, the telescopic adjustment of the thermocouple 7 is realized, which has the advantages of simple structure, convenient operation, high adjustment accuracy, etc. The setting of the exhaust hole 10 effectively solves the problem of air pressure balance, making the movement more stable. This design is suitable for industrial application scenarios that require dynamic adjustment of temperature measuring position, and can meet the temperature monitoring needs under different process conditions.

[0027] Embodiment Three:

[0028] As shown in Figures 1-4 , the assembly opening 3 of the embodiment is fixedly installed with the sealing cover 4, the sealing cover 4 is fixedly installed with the terminal 5, the movable part 6 is movably installed in the outer cylinder 1, the movable part 6 is fixedly connected with the thermocouple 7, the thermocouple 7 is connected with the terminal 5 through the wire 8, the outer cylinder 1 is fixedly connected with the air pressure joint 9, and the outer cylinder 1 is provided with the exhaust hole 10.

[0029] In this embodiment, the movable part 6 is provided with a sealing rubber ring 11 made of high-temperature-resistant elastic material, which tightly fits between the movable part 6 and the inner wall of the outer cylinder 1. When the gas pressure joint 9 inputs positive gas pressure, the gas pressure pushes the movable part 6 to move outward, driving the thermocouple 7 to extend out of the outer cylinder 1; when the gas pressure joint 9 inputs negative gas pressure, the movable part 6 moves inward under the action of gas pressure, driving the thermocouple 7 to retract into the outer cylinder 1. The sealing rubber ring 11 serves to improve the air tightness between the movable part 6 and the inner wall of the outer cylinder 1, minimizing gas pressure loss during gas pressure driving, thereby improving the moving accuracy of the movable part 6.

[0030] In the specific implementation process, the sealing rubber ring 11 is arranged to form stable sealing contact between the movable part 6 and the inner wall of the outer cylinder 1 when moving, avoiding the reduction of driving efficiency caused by gas leakage. At the same time, the sealing rubber ring 11 can reduce the frictional resistance between the movable part 6 and the inner wall of the outer cylinder 1, making the movement of the movable part 6 more stable and ensuring the accurate and controllable extension and retraction process of the thermocouple 7. The design of the exhaust hole 10 is used to balance the internal gas pressure of the outer cylinder 1, avoiding unstable movement of the movable part 6 caused by gas pressure fluctuation, and further improving the positioning accuracy of the thermocouple 7.

[0031] The retractable thermocouple 7 of this embodiment is suitable for dynamic temperature monitoring in high-temperature environments, such as sintering furnaces, molten metal level detection, etc. Through the cooperation of gas pressure driving and the sealing rubber ring 11, the thermocouple 7 can be quickly and accurately extended and retracted, meeting the temperature measurement requirements under different process conditions. Compared with the prior art, the structure of this embodiment is simplified, facilitating installation and maintenance, while improving the extension stability and measurement accuracy of the thermocouple 7.

[0032] Embodiment Four:

[0033] As shown in Figures 1-4 , the assembly seat 2 of this embodiment is provided with an assembly opening 3, the assembly opening 3 is fixedly installed with a sealing cover 4, the sealing cover 4 is fixedly installed with a wiring terminal 5, the outer cylinder 1 is movably installed with a movable part 6, the movable part 6 is fixedly connected with a thermocouple 7, the thermocouple 7 is connected with the wiring terminal 5 through a wire 8, the outer cylinder 1 is fixedly connected with a gas pressure joint 9, and the outer cylinder 1 is provided with an exhaust hole 10.

[0034] A sealing gasket 12 is arranged between the assembly opening 3 and the sealing cover 4, which is made of high-temperature-resistant elastic material and can maintain stable sealing performance when the internal gas pressure of the outer cylinder 1 changes. The installation method of the sealing gasket 12 is embedded, that is, the edge of the sealing gasket 12 is embedded into the groove of the assembly opening 3, and is fixed by the pressing action of the sealing cover 4. The thickness of the sealing gasket 12 is slightly larger than the gap between the assembly opening 3 and the sealing cover 4, ensuring that the sealing gasket 12 can fully fill the gap after the sealing cover 4 is tightened, avoiding gas leakage.

[0035] When the internal pressure of the outer cylinder 1 changes, the sealing gasket 12 can effectively prevent external air or dust from entering the interior of the outer cylinder 1, while avoiding the leakage of internal gas through the assembly opening 3. During the extension and retraction of the thermocouple 7, the internal pressure of the outer cylinder 1 is adjusted through the air pressure joint 9, and the movable part 6 drives the thermocouple 7 to extend or retract under the action of air pressure. The exhaust hole 10 is used to balance the pressure difference between the inside and outside of the outer cylinder 1, ensuring smooth movement of the movable part 6. The presence of the sealing gasket 12 further enhances the sealing performance of the assembly opening 3, preventing gas leakage caused by pressure fluctuations, thereby ensuring stable operation of the thermocouple 7.

[0036] In a high-temperature environment, the sealing gasket 12 can withstand heat transfer inside the outer cylinder 1, avoiding the decline in sealing performance caused by high temperatures. At the same time, the elastic properties of the sealing gasket 12 enable it to adapt to the slight deformation of the outer cylinder 1 due to temperature changes, ensuring that it can maintain good sealing performance after long-term use.

[0037] Example Five:

[0038] As shown in Figures 1-4 , the assembly opening 3 of the present embodiment is fixedly installed with a sealing cover 4, the sealing cover 4 is fixedly installed with a wiring terminal 5, the outer cylinder 1 is movably installed with a movable part 6, the movable part 6 is fixedly connected with a thermocouple 7, the thermocouple 7 is connected with the wiring terminal 5 through a wire 8, the outer cylinder 1 is fixedly connected with an air pressure joint 9, and the outer cylinder 1 is provided with an exhaust hole 10. The wire 8 is spirally arranged to adapt to the extension and retraction movement of the thermocouple 7, preventing the wire 8 from winding or disordering during the extension and retraction process.

[0039] During the operation of the retractable thermocouple 7, when it is necessary to adjust the measurement position of the thermocouple 7, a positive air pressure is input through the air pressure joint 9 to push the movable part 6 to move outward, causing the thermocouple 7 to extend out of the outer cylinder 1. At this time, the spiral wire 8 can gradually uncoil as the thermocouple 7 extends out, avoiding breakage or winding of the wire 8 caused by straight-line stretching. When it is necessary to retract the thermocouple 7, a negative air pressure is input through the air pressure joint 9 to cause the movable part 6 to retract the thermocouple 7, and the wire 8 spirally contracts to maintain an orderly coiled state, preventing the wire 8 from accumulating or knotting inside the outer cylinder 1.

[0040] The design of the spiral wire 8 enables the wire 8 to maintain a stable form during repeated extension and retraction of the thermocouple 7, avoiding fatigue or damage of the wire 8 caused by frequent extension and retraction. At the same time, the spiral structure can effectively disperse the stress of the wire 8, reducing local stress concentration caused by stretching or compression, thereby prolonging the service life of the wire 8. In addition, the spiral wire 8 occupies a relatively small space inside the outer cylinder 1, which can adapt to the extension and retraction requirements of different lengths, ensuring the flexibility and reliability of the thermocouple 7.

[0041] It is to be noted that the relational terms herein, such as first and second, and the like, are used solely to distinguish one from another entity or action without necessarily requiring or implying any actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0042] The above description is merely intended to illustrate the technical solutions of the present application, but not to limit the present application. Other modifications or equivalent replacements to the technical solutions of the present application made by those skilled in the art shall be included in the scope of the claims of the present application, as long as these modifications or equivalent replacements do not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A retractable thermocouple comprising an outer tube, characterised in that, The outer cylinder is provided with an assembling seat, the outer cylinder is provided with an assembling opening, the assembling opening is fixedly installed with a sealing cover, the sealing cover is fixedly installed with a wiring terminal, the outer cylinder is movably installed with a movable piece, the movable piece is fixedly connected with a thermocouple, the thermocouple is connected with the wiring terminal through a wire, the outer cylinder is fixedly connected with an air pressure connector, and the outer cylinder is provided with an exhaust hole.

2. The retractable thermocouple of claim 1, wherein, The movable piece is provided with a sealing rubber ring.

3. The retractable thermocouple of claim 1, wherein, A sealing gasket is arranged between the assembling opening and the sealing cover.

4. The retractable thermocouple of claim 1, wherein, The wire is arranged in a spiral shape.

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