Thermocouple furnace temperature monitoring device

Abstract

We provide a thermocouple furnace temperature monitoring device that is suitable for high-temperature, corrosive working environments and ensures long-term stable operation of the measuring instrument and temperature-sensing element. [Solution] The thermocouple furnace temperature monitoring device comprises an assembly stationary plate, a measuring device, and a temperature sensing element, the temperature sensing element is attached to the bottom of the measuring device, the measuring device is inserted into the cavity of the assembly stationary plate, a drive arm is rotatably connected to the top of the measuring device, and locking mechanisms are attached to both sides of the top of the assembly stationary plate, each locking mechanism including a U-shaped hollow post 41, which is in sliding contact with piston rods 42 on both the upper and lower sides of the cavity of the U-shaped hollow post, a retaining plate 44 and a push plate 45 attached to the outside of the two piston rods, and a C-shaped seal sleeve 46 connected to the outside of the push plate. A seal lock groove that fits the C-shaped seal sleeve is installed on the outside of the temperature sensing element to form a sealing barrier.

Description

[Technical Field]

[0001] The present invention relates to the technical field of monitoring devices, specifically to a thermocouple furnace temperature monitoring device. [Background technology]

[0002] Thermocouple furnace temperature monitoring devices are important equipment in the industrial temperature measurement field, and their installation structure and sealing performance directly affect measurement accuracy and equipment life, especially in high-temperature, corrosive working environments. Such devices usually require quick installation and reliable sealing characteristics to meet the needs of continuous monitoring under complex conditions.

[0003] Conventional monitoring device operation requires step-by-step adjustment of multiple locking points, resulting in inefficient installation, difficulty in achieving synchronized locking, and insufficient assembly precision. Furthermore, their sealing structures often rely on a single physical engagement or elastic seal, which is prone to gaps due to thermal expansion and contraction in high-temperature environments, leading to the risk of damage to measuring instruments and temperature-sensing elements due to the leakage of corrosive gases from the furnace or the intrusion of external impurities. It is particularly difficult to achieve both sealing reliability and operability with existing structures under conditions of high-frequency start-stops and severe temperature fluctuations. Summary of the Invention [Problem to be solved by the invention]

[0004] In response to the shortcomings of existing technologies, the present invention provides a thermocouple furnace temperature monitoring device, which solves the technical problems of the above operation, which requires stepwise adjustment of multiple locking points, which not only results in poor installation efficiency but also makes it difficult to achieve synchronous locking and insufficient assembly precision. [Means for solving the problem]

[0005] To achieve the above objectives, the present invention provides a thermocouple furnace temperature monitoring device, comprising an assembly stationary plate, a measuring device, and a temperature sensor. The temperature sensor is attached to the bottom of the measuring device, which is inserted into the cavity of the assembly stationary plate. A drive arm is rotatably connected to the top of the measuring device. Locking mechanisms are attached to both sides of the top of the assembly stationary plate. The locking mechanisms include a U-shaped hollow column, with piston rods slidingly contacting the upper and lower sides of the cavity of the U-shaped hollow column. A retaining plate and a push plate are attached to the exteriors of the two piston rods, respectively. A C-shaped seal sleeve is connected to the exterior of the push plate. A first return spring is connected between the piston rods and the U-shaped hollow column. A seal lock groove that fits the C-shaped seal sleeve is installed on the exterior of the temperature sensor. A guide plate is installed inside the piston of the piston rod, and the guide plate is slidingly contacting the U-shaped hollow column.

[0006] Preferably, a locking pin is inserted into each of the front and rear sides of the drive arm, and a slot is provided on the top of the assembly stationary platen to accommodate the locking pin. After the locking pin is inserted into the slot, a double mechanical locking structure is formed. The tapered end design automatically compensates for assembly variations, and the wavy anti-loosening pattern on the inner wall of the slot effectively prevents loosening caused by vibration. The chrome-plated surface of the pin can reduce the impact of high-temperature oxidation on locking precision.

[0007] Preferably, a sealing flange is fitted to the outside of the assembly stationary platen, and a gasket is attached to the bottom of the sealing flange. The sealing flange uses a double bellows structure, with the inner bellows pre-compressing to compensate for thermal deformation of the furnace wall. An airtightness detection port is installed in the outer bellows to monitor the sealing condition in real time. The gasket is made of graphite blade material, which maintains a sealing compression of 0.1 mm even at high temperatures, effectively blocking the escape of high-temperature gas from the furnace.

[0008] Preferably, raceways are installed at the top and bottom of the assembly stationary platen, with guide blocks sliding within the two sets of raceways, and the two sets of guide blocks are connected to a pressure plate and a push plate, respectively. The inner walls of the raceways are coated with a self-lubricating coating. The guide blocks have a separate wedge structure and an oil reservoir groove on their sliding surfaces, maintaining a motion accuracy of 0.05 mm even in high-temperature environments. When the locking mechanism is operating, the pressure plate and push plate always move vertically, preventing jamming.

[0009] Preferably, a second return spring is mounted on the outside of the guide block, with the other end of the second return spring connected to the inside of the raceway groove. The second return spring is a constant-force spring with a modulus of elasticity that changes linearly with the amount of compression, providing a gradual return force when the locking mechanism is unlocked. Together with the first return spring, this forms a two-stage buffer system that effectively absorbs the shock of unlocking and extends the life of the mechanism.

[0010] Preferably, a rubber mat is fitted between the retaining plate and the C-seal sleeve near the measuring device, and balls are installed on the exterior of the retaining plate and the C-seal sleeve, contacting the exterior of the assembly stationary plate. The rubber mat is made of fluorosilicone rubber, with a radially gradient Shore hardness, with a lower hardness in the central region to enhance sealing and a higher hardness in the peripheral region to provide structural support. The external balls are made of ceramic, with a high-temperature friction coefficient of less than 0.1, significantly reducing operating torque, and the ball arrangement density is optimized to ensure a force uniformity of better than 95%. [Effects of the Invention]

[0011] Compared with the prior art, the present invention provides a thermocouple furnace temperature monitoring device with the following beneficial effects: This thermocouple furnace temperature monitoring device's locking mechanism employs a two-piston interlocking structure. When the drive arm rotates, a pressure plate pushes one of the piston rods, actuated by hydraulic or pneumatic pressure within the U-shaped hollow column. At the same time, the other piston rod is driven to precisely insert the C-shaped seal sleeve into the seal lock groove, forming a mechanical interlock. A single rotation achieves multi-point simultaneous locking, improving installation efficiency and ease of use. The C-shaped seal sleeve and seal lock groove interlocking structure form a double sealing barrier, achieving structural fixation through physical engagement and utilizing the seal sleeve's elastic deformation to fill assembly gaps. This effectively prevents leakage of high-temperature gases from the furnace and the intrusion of external impurities. This ensures long-term stable operation of the measuring instrument and temperature sensor, especially in high-temperature, corrosive working environments. [Brief explanation of the drawings]

[0012] [Figure 1] FIG. 1 is a front view of the present invention. [Figure 2] FIG. 2 is a plan view of the present invention. [Figure 3] FIG. 3 is a partial cross-sectional view of the locking mechanism of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0013] The technical means in the embodiments of the present invention will be described below clearly and completely with reference to the drawings of the embodiments of the present invention, but it is clear that the described embodiments are only some of the embodiments of the present invention and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without any creative work fall within the scope of protection of the present invention.

[0014] This invention provides a technical solution for a thermocouple furnace temperature monitoring device, with reference to Figures 1, 2, and 3. It comprises an assembly stationary platen 1, a measuring device 2, and a temperature sensing element 3. The temperature sensing element 3 is attached to the bottom of the measuring device 2, which is inserted into the inner cavity of the assembly stationary platen 1. A driving arm 21 is rotatably connected to the top of the measuring device 2. A locking mechanism 4 is attached to each side of the top of the assembly stationary platen 1, and the locking mechanism 4 includes a U-shaped hollow pillar 41. The inside of the U-shaped hollow pillar 41 is filled with oil. The U-shaped hollow pillar 41 is inserted into the top of the assembly stationary platen 1. Piston rods 42 are in sliding contact with the upper and lower sides of the inner cavity of the U-shaped hollow column 41, and a pressure plate 44 and a push plate 45 are attached to the outside of the two piston rods 42, respectively. A C-shaped seal sleeve 46 is connected to the outside of the push plate 45, and a first return spring 43 is connected between the piston rods 42 and the U-shaped hollow column 41. A seal lock groove 31 that fits the C-shaped seal sleeve 46 is installed on the outside of the temperature sensor 3, and a guide plate is installed inside the piston of the piston rod 42, and the guide plate is in sliding contact with the U-shaped hollow column 41.

[0015] When the drive arm 21 rotates, its downward movement mechanically pushes both piston rods 42 simultaneously, causing them to contract inward, and the retaining plate 44 adheres to the outer wall of the measuring device 2, thereby restricting its axial position. At the same time, the push plate 45 drives the C-shaped gasket 46 to engage with the seal lock groove 31, and the pretension force of the first return spring 43 achieves a bidirectional lock, preventing axial movement of the temperature sensor 3 while compensating for the thermal expansion gap through the elastic deformation of the C-shaped structure, ensuring seal reliability in high-temperature environments.

[0016] Locking pins 22 are inserted into the front and rear sides of the driving arm 21, and slots that fit the locking pins 22 are provided on the top of the assembly stationary platen 1. After the locking pins 22 are inserted into the slots, a double mechanical locking structure is formed. The tapered end design automatically compensates for assembly variations, and the wavy anti-loosening pattern on the inner wall of the slot effectively resists the risk of loosening due to vibration. The chrome plating on the pin surface reduces the impact of high-temperature oxidation on the locking precision.

[0017] A seal flange 11 is fitted to the outside of the assembly stationary platen 1, and a gasket is attached to the bottom of the seal flange 11. The seal flange 11 uses a double bellows structure, with the inner bellows pre-compressing to compensate for thermal deformation of the furnace wall. An airtightness detection port is installed in the outer bellows to monitor the sealing condition in real time. The gasket is made of graphite blade material, and a seal compression of 0.1 mm is maintained even at high temperatures, effectively blocking the escape of high-temperature gas from the furnace.

[0018] Raceway grooves are installed at the top and bottom ends of the assembly stationary platen 1, and guide blocks 47 slide within the two sets of raceway grooves, which are respectively connected to a pressure plate 44 and a push plate 45. A self-lubricating coating is applied to the inner walls of the raceway grooves. The guide block 47 has a separate wedge structure and an oil reservoir groove on its sliding surface, maintaining a motion accuracy of 0.05 mm even in high-temperature environments. This ensures that the pressure plate 44 and push plate 45 always displace vertically when the locking mechanism 4 is operating, preventing jamming.

[0019] A second return spring 48 is attached to the outside of the guide block 47, with the other end connected to the inside of the raceway groove. The second return spring 48 is a constant-force spring with a modulus of elasticity that changes linearly with the amount of compression, providing a gradual return force when the locking mechanism 4 is unlocked. Together with the first return spring 43, this forms a two-stage buffer system that effectively absorbs the shock of unlocking and extends the life of the mechanism.

[0020] A rubber mat is fitted between the retaining plate 44 and the C-seal sleeve 46 on the side closest to the measuring device 2, and balls are installed on the outside of the retaining plate 44 and the C-seal sleeve 46, which are in contact with the outside of the assembly stationary plate 1. The rubber mat is made of fluorosilicone rubber, with a shore hardness gradient along the radial direction, with a low hardness in the central region to enhance sealing and a high hardness in the peripheral region to provide structural support. The outer balls are made of ceramic material, with a friction coefficient of less than 0.1 at high temperatures, significantly reducing operating torque, and the ball arrangement density is optimized to ensure a force uniformity of better than 95%.

[0021] In this proposal, first, the assembly stationary platen 1 is attached to the outside of the furnace body, the measuring device 2 is inserted into the assembly stationary platen 1, the seal lock groove 31 is rotated to move the pressure plate 44, and the piston rod 42 is moved inside the U-shaped hollow column 41. Next, the other end of the piston rod 42 is moved to insert the push plate 45 and C-shaped seal sleeve 46 into the seal lock groove 31, locking the temperature sensor 3 and measuring device 2 and at the same time improving the sealing between the temperature sensor 3, measuring device 2, assembly stationary platen 1 and the furnace body.

[0022] It should be noted that, as used herein, 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 that any actual relationship or order exists between those entities or operations. Furthermore, the words "comprise," "include," or any other variant thereof imply an inclusion that is not exclusive. Thus, a process, method, article, or facility that includes a list of elements includes not only those elements but also other elements not expressly listed or that are inherent in such process, method, article, or facility.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention, and the scope of the present invention is limited by the appended claims and their equivalents. [Explanation of symbols]

[0024] 1 Assembly stationary platen 11 Seal flange 2 Measuring instrument 21 Drive arm 22 Lock pin 3 Thermosensor 31 Seal lock groove 4 Locking mechanism 41 U-shaped hollow column 42 Piston rod 43 First return spring 44 Presser plate 45 Push Plate 46 C-type seal sleeve 47 Guide Block 48 Second return spring

Claims

1. A thermocouple furnace temperature monitoring device comprises an assembly stationary platen (1), a measuring device (2), and a temperature-sensing element (3), the temperature-sensing element (3) is attached to the bottom of the measuring device (2), the measuring device (2) is inserted into the inner cavity of the assembly stationary platen (1), a drive arm (21) is rotatably connected to the top of the measuring device (2), and a locking mechanism (4) is attached to both sides of the top of the assembly stationary platen (1), the locking mechanism (4) includes a U-shaped hollow column (41) that is in sliding contact with piston rods (42) on both the upper and lower sides of the inner cavity of the U-shaped hollow column (41), and the two piston rods (42) are respectively provided on the outside. a presser plate (44) and a push plate (45) are attached, a C-shaped seal sleeve (46) is connected to the outside of the push plate (45), a first return spring (43) is connected between the piston rod (42) and the U-shaped hollow column (41), a seal lock groove (31) that fits the C-shaped seal sleeve (46) is installed on the outside of the temperature sensing element (3), a guide plate is provided inside the piston of the piston rod (42), and the guide plate is in sliding contact with the U-shaped hollow column (41).

2. 2. The thermocouple furnace temperature monitoring device according to claim 1, wherein a lock pin (22) is inserted into each of the front and rear sides of the drive arm (21), and a slot that fits the lock pin (22) is provided on the upper part of the assembly stationary platen (1).

3. 2. The thermocouple furnace temperature monitoring device according to claim 1, wherein a seal flange (11) is fitted to the outside of the assembly stationary platen (1), and a gasket is attached to the bottom of the seal flange (11).

4. 2. The thermocouple furnace temperature monitoring device according to claim 1, wherein raceway grooves are provided at both the upper and lower ends of the assembly stationary platen (1), and guide blocks (47) are slidably contacted inside the two sets of raceway grooves, and the two sets of guide blocks (47) are connected to a holding plate (44) and a push plate (45), respectively.

5. 5. The thermocouple furnace temperature monitoring device according to claim 4, wherein a second return spring (48) is attached to the outside of the guide block (47), and the other end of the second return spring (48) is connected to the inside of the raceway groove.

6. 2. The thermocouple furnace temperature monitoring device according to claim 1, wherein a rubber mat is fitted to the pressure plate (44) and the C-shaped seal sleeve (46) on the side closer to the measuring device (2), and a ball is installed on the outside of the pressure plate (44) and the C-shaped seal sleeve (46), and the ball is in contact with the outside of the assembly stationary platen (1).

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