Over-temperature early warning device for furnace wall

Abstract

The invention relates to the technical field of boiler safety monitoring, and discloses a boiler wall over-temperature early warning device, which comprises a heat conducting plate provided with a mounting hole and a clamping seat, and the clamping seat is provided with a first clamping groove; a mounting shell is arranged outside the temperature measuring assembly, a locking assembly is arranged on the mounting shell, the locking assembly comprises a clamping structure, the clamping structure comprises a first elastic structure and a first spring bolt, the first end of the first elastic structure is connected with the mounting shell, and the second end of the first elastic structure is connected with the first spring bolt; the first spring bolt can slide in the direction perpendicular to the axis of the mounting hole relative to the mounting shell. According to the invention, through clamping cooperation of the locking assembly and the clamping seat, the temperature measurement assembly can be mounted and dismounted without any tool, and operation can be completed only by plugging and unplugging the temperature measurement assembly, so that the dismounting and mounting time of the temperature measurement assembly can be greatly shortened, and the operation difficulty of an operator in a high-temperature and narrow space is reduced.

Description

Technical Field

[0001] This invention relates to the field of boiler safety monitoring technology, specifically to a furnace wall overheating early warning device. Background Technology

[0002] High-temperature heating surfaces in boilers, such as superheaters, reheaters, and water-cooled walls, are prone to localized overheating during long-term operation due to factors such as high-temperature flue gas erosion and uneven flow of the working fluid within the tubes. In severe cases, this can lead to accidents such as tube wall creep and tube rupture. To ensure the safe operation of the unit, industrial applications commonly use wall temperature monitoring devices to monitor the temperature of high-temperature heating surfaces in real time and issue warnings when the temperature approaches or exceeds safety limits.

[0003] Currently, the most commonly used wall temperature monitoring device is the furnace wall thermocouple. Existing furnace wall thermocouples typically consist of an armored temperature sensing element, a heat-conducting plate, and mounting components. The heat-conducting plate is a stainless steel plate that conforms to the curved surface of the boiler tube wall and is directly fixed to the boiler tube wall by welding. The measuring end of the armored temperature sensing element is pressed against the heat-conducting plate through a compression fitting or flange, thereby realizing the acquisition of temperature signals.

[0004] However, the above structure has certain shortcomings in practical applications. The heat-conducting plate needs to be welded and fixed to the pipe wall. Once the welding is completed, its position is fixed. If the thermocouple fails or needs to be calibrated or replaced, the operator has to disassemble and assemble the ferrule or flange bolts in a high-temperature, confined space, which is difficult and time-consuming. Summary of the Invention

[0005] To address the problem of difficult disassembly and assembly of temperature measuring components in the prior art, this invention provides a furnace wall over-temperature early warning device that enables rapid disassembly and assembly of temperature measuring components.

[0006] To address the aforementioned problems, this invention provides a furnace wall overheating early warning device, comprising: a heat-conducting plate having mounting holes and a snap-fit ​​seat, each snap-fit ​​seat having a first snap-fit ​​groove; a temperature measuring component having an external mounting shell, the mounting shell having a locking component, the locking component including a snap-fit ​​structure, the snap-fit ​​structure including a first elastic structure and a first locking tongue, a first end of the first elastic structure being connected to the mounting shell, and a second end being connected to the first locking tongue, the first locking tongue being able to slide relative to the mounting shell in a direction perpendicular to the axis of the mounting hole; the locking component having a locked position and an unlocked position relative to the snap-fit ​​seat, when the locking component is in the locked position, at least a portion of the first locking tongue extends into the first snap-fit ​​groove, and when the locking component is in the unlocked position, the first locking tongue disengages from the first snap-fit ​​groove.

[0007] The furnace wall overheating early warning device provided by this invention involves aligning the mounting shell of the temperature measuring component with the mounting hole of the heat-conducting plate during installation. During insertion, the first locking tongue, under the pressure of the locking seat, overcomes the elastic force of the first elastic structure and slides towards the axis of the mounting hole. Once the mounting shell is fully inserted, the first locking tongue resets under the elastic force of the first elastic structure, at least partially extending into the first slot on the locking seat, thus stabilizing the locking component in the locked position. At this point, the temperature measuring component and the heat-conducting plate are relatively fixed, enabling real-time monitoring of the boiler tube wall temperature.

[0008] When the temperature sensing component malfunctions or requires calibration, the operator only needs to apply external force to disengage the first locking tongue from the first slot, allowing the temperature sensing component to be pulled out of the heat-conducting plate without removing any bolts. To replace a new temperature sensing component, simply repeat the above installation steps for a quick replacement.

[0009] The furnace wall over-temperature early warning device provided by the present invention can realize the quick disassembly and assembly of the temperature measuring component through the locking component and the snap-fit ​​seat. The operation can be completed without the aid of tools, which can significantly shorten the maintenance time, reduce the difficulty of operation for operators in high temperature and confined space, and effectively shorten the maintenance cycle.

[0010] Preferably, a second slot is provided on the inner wall of the first slot; the locking structure further includes a second elastic structure and a second locking tongue, the first end of the second elastic structure is connected to the locking seat, the second end is connected to the second locking tongue, and the second locking tongue is slidably connected to the first locking tongue, so that the second locking tongue can slide relative to the mounting shell in a direction parallel to the axis of the mounting hole; when the locking assembly is in the locked position, at least part of the second locking tongue extends into the second slot, and when the locking assembly is in the unlocked position, the second locking tongue disengages from the second slot.

[0011] During installation of the temperature sensing component, align the mounting housing of the temperature sensing component with the mounting hole of the heat-conducting plate and insert it. During insertion, the first locking tongue is initially pressed against by the locking seat, overcoming the elastic force of the first elastic structure. As the mounting housing continues to penetrate, when the first locking tongue reaches the first slot position, it resets under the elastic force of the first elastic structure, at least partially extending into the first slot, achieving initial locking. Simultaneously, the second locking tongue aligns with the second slot and, under the elastic force of the second elastic structure, slides along a direction parallel to the axis of the mounting hole, extending into the second slot, forming secondary locking. At this point, the locking assembly is in the locked position, and the temperature sensing component and the heat-conducting plate are doubly fixed through radial locking between the first locking tongue and the first slot, and axial locking between the second locking tongue and the second slot. During disassembly, first apply external force to disengage the second locking tongue from the second slot, and then continue applying force to disengage the first locking tongue from the first slot, allowing the temperature sensing component to be pulled out of the heat-conducting plate.

[0012] The dual-locking design enhances the vibration resistance of the temperature sensing component under harsh operating conditions. Even when subjected to continuous high-frequency vibration or thermal expansion shock during boiler operation, the temperature sensing component will not easily loosen or shift, thereby improving the long-term stability and measurement accuracy of temperature monitoring.

[0013] Preferably, the latching seat is provided with a first contact portion; the first locking tongue is provided with a guide slope, the guide slope being used to contact the contact portion during at least a part of the process of the first locking tongue sliding toward the heat-conducting plate, so as to make the first locking tongue slide in the direction of the axis of the mounting hole.

[0014] During the installation of the temperature sensing component, as the mounting shell moves towards the heat-conducting plate, the first contact portion applies a force to the guide slope. This force is perpendicular to the guide slope and, after decomposition, generates a component force perpendicular to the axis of the mounting hole. This component drives the first locking tongue to slide towards the axis of the mounting hole, overcoming the elastic force of the first elastic structure. Once the first locking tongue is fully retracted, the mounting shell can continue to penetrate deeper. When the mounting shell is fully inserted and the first locking tongue passes the first contact portion and reaches the first slot, the first locking tongue resets under the elastic force of the first elastic structure, at least partially extending into the first slot to achieve locking.

[0015] By setting a guide ramp on the first locking tongue and a first contact part on the locking seat to cooperate with it, the automatic guidance and driving function of the temperature measuring component during installation can be realized. During installation, the operator only needs to insert the mounting shell into the direction of the heat-guiding plate, and the cooperation between the guide ramp and the first contact part will automatically drive the first locking tongue to retract, without the need for the operator to press or adjust it, which helps to improve the installation efficiency of the temperature measuring component.

[0016] Preferably, the snap-fit ​​structure further includes a push block and a push rod; the push block is slidable relative to the mounting housing in a direction perpendicular to the axis of the mounting hole; the push rod is slidably connected to the push block, so that the push rod is slidable relative to the push block and the first locking tongue in a direction parallel to the axis of the mounting hole; the second locking tongue is connected to the push rod.

[0017] When disassembling the temperature measuring component, pressing the push rod moves the second locking tongue in the direction of compressing the second elastic structure, causing the second locking tongue to disengage from the second slot; sliding the push block moves the first locking tongue in the direction of compressing the first elastic structure. The push block and push rod make the movement control of the first and second locking tongues more convenient and reliable.

[0018] Preferably, multiple snap-fit ​​seats are provided, and the multiple snap-fit ​​seats are circumferentially distributed on the heat-conducting plate around the axis of the mounting hole; multiple snap-fit ​​structures are provided, and each snap-fit ​​seat corresponds to and cooperates with one of them.

[0019] By setting multiple snap-fit ​​seats and multiple snap-fit ​​structures and making them correspond one-to-one, that is, one snap-fit ​​seat corresponds to one snap-fit ​​structure for connection, and multiple snap-fit ​​seats are evenly distributed around the axis of the mounting hole, the temperature measuring component and the heat-conducting plate can maintain a uniform and stable contact pressure, which further improves the stability of the temperature measuring component after locking.

[0020] Preferably, the snap-fit ​​structure further includes a first transmission rod, which is slidable relative to the mounting shell in a direction perpendicular to the axis of the mounting hole. The first end of the first transmission rod is provided with a first driving pin, and the second end is provided with a driving wedge. The driving wedge is slidably connected to the push block, allowing it to slide relative to the push block in a direction perpendicular to the axis of the mounting hole. The driving wedge has a first driving inclined surface. The locking assembly further includes a turntable, which is rotatably fitted onto the outer periphery of the mounting shell. The turntable has multiple first driving grooves, each corresponding to a first driving pin. Each first driving pin is slidably disposed within its corresponding first driving groove. The end of the push rod facing away from the heat-conducting plate has a second contact portion. The first driving groove is used to drive the first driving pin to slide in a direction perpendicular to the axis of the mounting hole when the turntable rotates. The first driving inclined surface is used to drive the second contact portion to move in a direction parallel to the axis of the mounting hole during at least a portion of the sliding of the first transmission rod in a direction perpendicular to the axis of the mounting hole.

[0021] When the temperature measuring component needs to be disassembled, simply rotate the turntable. As the turntable rotates, the wall of the first drive groove (arc-shaped or oblique groove) on the turntable applies a force to the first drive pin. This force is decomposed along a direction perpendicular to the mounting hole axis, driving the first drive pin to move in the same direction. Since multiple first drive grooves correspond one-to-one with multiple first drive pins, the turntable rotation simultaneously drives all first transmission rods to move synchronously, ensuring consistent operation of multiple locking structures. The first transmission rod, first drive pin, and drive wedge move synchronously. When the drive wedge moves towards the mounting hole axis, the first drive inclined surface contacts the second contact part and applies a force to it. This force generates a component along the push rod's axis, pushing the push rod to move in a direction parallel to the mounting hole axis. As the push rod moves, it drives the second locking tongue to move in the direction of compressing the second elastic structure, causing the second locking tongue to disengage from the second slot. As the turntable continues to rotate, the drive wedge continues to slide, causing the push block to slide in a direction perpendicular to the mounting hole axis, thereby disengaging the first locking tongue from the first slot. The temperature sensing component can now be removed.

[0022] When installing the temperature measuring component, the turntable is rotated in the opposite direction. The groove wall of the first drive slot drives the first drive pin to slide in the opposite direction, and the first transmission rod drives the drive wedge to move in the opposite direction. During this process, the push rod gradually resets under the elastic force of the second elastic structure, and the second locking tongue re-enters the second slot. As the turntable continues to rotate, the drive wedge drives the push block to move in the opposite direction, so that the first locking tongue re-enters the first slot.

[0023] The complex multi-point synchronous operation is simplified into a simple rotational motion by linking the turntable, the first transmission rod, and the driving wedge. Operators only need to rotate the turntable to simultaneously drive multiple locking and unlocking mechanisms, eliminating the need to operate each mechanism individually, thus significantly improving the efficiency of temperature sensing component assembly and disassembly. Furthermore, the turntable is fitted around the outer periphery of the mounting housing, providing ample operating space. Even in confined or poorly lit boiler environments, it can be easily gripped and rotated, further reducing operational difficulty. The entire locking assembly is compact, adding no extra volume, facilitating integrated installation in limited spaces.

[0024] Preferably, the first drive groove is configured such that when the first drive pin abuts against the first end of the first drive groove, at least a portion of the first locking tongue extends into the first slot, and at least a portion of the second locking tongue extends into the second slot; when the first drive pin abuts against the second end of the first drive groove, the first locking tongue disengages from the first slot, and the second locking tongue disengages from the second slot.

[0025] After the operator inserts the temperature sensing component into the mounting hole of the heat-conducting plate, they rotate the turntable to a certain extreme position, causing each first drive pin to abut against the first end of its corresponding first drive groove. In this position, the first locking tongue extends into the first slot, and the second locking tongue extends into the second slot, achieving double locking. When it is necessary to disassemble the temperature sensing component, the operator rotates the turntable in the opposite direction to another extreme position, causing each first drive pin to abut against the second end of its corresponding first drive groove. During this process, the drive wedge first pushes the push rod, causing the second locking tongue to overcome the elastic force of the second elastic structure and disengage from the second slot; then the drive wedge pushes the push block, causing the first locking tongue to overcome the elastic force of the first elastic structure and disengage from the first slot. The double locking is released sequentially, and the temperature sensing component can be easily pulled out.

[0026] By associating the locked and unlocked states with the two ends of the first drive slot respectively, the operator only needs to rotate the turntable to the limit position to ensure that the locking component is in a fully locked or fully unlocked state, without relying on visual inspection or experience. This avoids problems caused by insufficient locking or incomplete unlocking. At the same time, the end of the first drive slot can provide clear operational feedback, which helps to improve the efficiency of temperature sensing component assembly and disassembly.

[0027] Preferably, the locking assembly further includes a sealing cover, which is coaxially and fixedly connected to the mounting shell, and the snap-fit ​​structure is connected to the sealing cover; when the locking assembly is in the locked position, the end face of the sealing cover abuts against the heat-conducting plate.

[0028] When locked, the sealing cover fits tightly against the end face of the heat-conducting plate, forming a reliable seal between the mounting shell and the heat-conducting plate. This effectively prevents high-temperature flue gas, dust, and moisture from entering the mounting hole. It also prevents components such as the snap-fit ​​structure and elastic elements from jamming, rusting, or losing elasticity due to contamination or corrosion, thereby improving the long-term reliability and service life of the locking assembly. Furthermore, by increasing the surface contact support points, the vibration resistance of the temperature sensing assembly is enhanced, suppressing micro-movements or loosening caused by high-frequency vibrations of the boiler, further improving the stability of temperature monitoring.

[0029] Preferably, the locking assembly further includes a sealing ring, which is coaxially connected to the sealing cover; when the locking assembly is in the locked position, the sealing ring abuts against the heat-conducting plate.

[0030] The sealing ring can be made of an elastic material. When the locking assembly is in the locked position, the sealing ring is compressed and deformed. The elastic force generated by the elastic material after being compressed applies a continuous reverse thrust to the sealing cover and the heat-conducting plate. This thrust can offset the small displacement caused by boiler vibration or thermal expansion impact, so that the first locking tongue and the first slot always keep tightly fitted, effectively eliminating the loose gap that may occur in the locking assembly during long-term operation, thereby enhancing the vibration resistance stability and long-term locking reliability of the temperature measuring assembly. At the same time, after the sealing ring is compressed, it forms an elastic sealing interface with the heat-conducting plate. Together with the seal formed by the sealing cover end face abutting against the heat-conducting plate, it constitutes a double seal, which can further improve the connection sealing performance between the temperature measuring assembly and the heat-conducting plate.

[0031] Preferably, the locking assembly further includes a slip ring and a third elastic structure. The slip ring is coaxially and fixedly connected to the sealing ring (16). Both the slip ring and the sealing ring are slidably fitted onto the outer periphery of the mounting housing. The outer peripheral side of the slip ring and the outer peripheral side of the sealing ring are both in contact with the inner peripheral side of the sealing cover. The slip ring is provided with a first slot, and the first slot is provided with a second driving groove. The third elastic structure is connected between the sealing cover and the slip ring.

[0032] Furthermore, the snap-fit ​​structure also includes a second transmission rod, which slidably passes through the sealing cover and has its first end inserted into the first slot. After passing through the sealing cover, the first end of the second transmission rod is slidably inserted into the first slot, so that the second transmission rod can slide relative to the sealing cover in a direction perpendicular to the axis of the mounting hole. The first end of the second transmission rod is provided with a second drive pin, which is slidably disposed in the second drive groove. The second end of the second transmission rod is provided with a third contact portion.

[0033] Furthermore, the snap-fit ​​seat is provided with a second driving inclined surface, which is used to drive the third contact portion to slide in a direction perpendicular to the axis of the mounting hole during at least a portion of the movement of the third contact portion along the axis of the mounting hole; the second driving groove is used to cause the slip ring to slide in a direction parallel to the axis of the mounting hole during at least a portion of the movement of the second driving pin along the direction perpendicular to the axis of the mounting hole.

[0034] When the operator inserts the mounting housing of the temperature sensing component into the mounting hole of the heat-conducting plate, the mounting housing moves towards the heat-conducting plate. In the later stages of insertion, the third contact portion contacts the second drive ramp. As the mounting housing continues to penetrate deeper, the third contact portion continues to move towards the heat-conducting plate in a direction parallel to the axis of the mounting hole. The second drive ramp applies a compressive force to the third contact portion, generating a component force perpendicular to the axis of the mounting hole. This compressive force drives the third contact portion, along with the second transmission rod and the second drive pin, to slide towards the axis of the mounting hole, causing the second drive pin to slide along the second drive groove within the first slot of the slip ring. Due to the guiding effect of the second drive groove, the sliding of the second drive pin perpendicular to the axis of the mounting hole is converted into the sliding of the slip ring towards the heat-conducting plate in a direction parallel to the axis of the mounting hole. The slip ring drives the sealing ring, which is coaxially fixed to it, to move synchronously. When the mounting housing is fully inserted and the locking assembly is in the locked position, the sealing ring presses against the heat-conducting plate, and simultaneously, the end face of the sealing cover abuts against the heat-conducting plate, forming a double seal.

[0035] As the slip ring and sealing ring slide towards the heat-conducting plate, the third elastic structure is gradually stretched. During the process of pulling out the mounting shell, the third elastic structure can pull the slip ring and sealing ring away from the heat-conducting plate, ultimately causing the slip ring and sealing ring to retract into the sealing cover.

[0036] Understandably, omitting the slip ring and directly placing the second drive groove on the sealing ring would not only compromise the accuracy and reliability of motion transmission but also easily lead to premature tearing or failure of the sealing ring due to localized stress concentration. Adding a rigid slip ring and placing the second drive groove on it ensures precise transmission of the second drive rod's movement and withstands the friction and driving force generated when the second drive groove engages with the second drive pin, preventing premature damage to the sealing ring. Furthermore, the slidable sealing ring allows the third elastic structure to pull the slip ring and sealing ring back synchronously during the removal of the temperature sensing component, retracting the sealing ring into the sealing cover and preventing it from protruding. This effectively prevents the sealing ring from being scratched or bumped against the furnace wall, support, or other components during disassembly, transportation, and temporary placement, thus reducing dust and impurities adhering to the sealing surface and ensuring good sealing performance upon reinstallation. This also improves the sealing reliability of the device after repeated disassembly and reassembly under harsh operating conditions.

[0037] The beneficial effects of this invention are: (1) By engaging the locking component with the card slot, the installation and removal of the temperature measuring component can be completed without any tools. The operation can be completed simply by inserting and removing the temperature measuring component, which can greatly shorten the installation and removal time of the temperature measuring component and reduce the difficulty of operation for operators in high temperature and confined space. The temperature measuring component includes a first locking tongue and a second locking tongue. By engaging the first locking tongue with the first card slot and the second locking tongue with the second card slot, a double locking is formed. Even if the boiler is subjected to continuous high-frequency vibration or thermal expansion impact during operation, the temperature measuring component will not easily loosen or shift, which can improve the long-term stability and measurement accuracy of temperature monitoring.

[0038] (2) Multiple snap-fit ​​seats and snap-fit ​​structures are evenly distributed around the axis of the mounting hole, which can make the temperature measuring component and the heat-conducting plate maintain uniform and stable contact pressure, further improving the stability of the temperature measuring component after locking; a turntable, push block and push rod are set up. Through the linkage design of the turntable, the first transmission rod and the drive wedge, the complex multi-point synchronous operation is simplified into a simple rotation action. Just rotate the turntable to drive multiple snap-fit ​​structures to complete synchronous locking or unlocking at the same time. There is no need to operate each snap-fit ​​structure one by one, which can greatly improve the assembly and disassembly efficiency of the temperature measuring component.

[0039] (3) A sealing cover and a sealing ring are provided. The end face of the sealing cover abuts against the heat-conducting plate to form an end face seal. After the sealing ring is compressed, it forms an elastic sealing interface with the heat-conducting plate. The double seal works together to significantly improve the connection sealing performance between the temperature measuring component and the heat-conducting plate. At the same time, the sealing ring is compressed and deformed in the locked state, which can offset the small displacement caused by boiler vibration or thermal expansion impact, so that the snap-fit ​​structure and the snap-fit ​​seat are firmly connected, avoiding loosening that may occur during long-term operation.

[0040] (4) By setting a second transmission rod, a slip ring, and a third elastic structure, and setting a second driving slope on the snap-fit ​​seat, the sealing ring can be automatically driven to press against the heat-conducting plate when the temperature measuring component is inserted into place, thus achieving a reliable seal. When the temperature measuring component is pulled out, the third elastic structure can pull the slip ring and the sealing ring back into the sealing cover to prevent the sealing ring from being exposed, thereby preventing the sealing ring from being scratched, bumped, or having dust or impurities attached during disassembly, assembly, and transportation, and ensuring its stable sealing performance. In addition, setting the second driving groove that bears the transmission force on the rigid slip ring instead of the flexible sealing ring can ensure the accuracy and reliability of motion transmission, and also prevent stress concentration, tearing, or premature damage to the sealing ring during transmission, thus extending the service life of the sealing ring. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the locking component in the locked position in a furnace wall overheating early warning device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a furnace wall over-temperature early warning device when the locking component is in the unlocked position. Figure 3 This is a schematic diagram of the structure of the locking seat and the first locking tongue; Figure 4 A schematic diagram showing the connection between the second locking tongue, push rod, push block and the first transmission rod when the locking assembly is in the locked position; Figure 5 This is a schematic diagram showing the interaction between the second transmission rod and the second driving inclined plane. Figure 6 This is a schematic diagram showing the connection between the sealing cover, the protective cover, and the turntable. Figure 7 A schematic diagram illustrating the fit between the protrusion and the groove; Figure 8 This is a schematic diagram of the internal structure of the sealing cover; Figure 9 This is a schematic diagram of the sealing ring, slip ring, and third elastic structure. Figure 10 This is a schematic diagram of the second transmission rod.

[0043] Explanation of reference numerals in the attached figures: 1. Heat-conducting plate; 101. Mounting hole; 2. Snap-fit ​​base; 201. First slot; 202. Second slot; 203. First contact part; 204. Second driving slope; 3. Temperature measuring component; 4. Mounting shell; 5. First elastic structure; 6. First locking tongue; 601. Guide slope; 7. Second elastic structure; 8. Second locking tongue; 801. Snap-fit ​​part; 802. Socket part; 9. Push block; 901. Slide groove; 10. Push rod; 1001. Second contact part; 11. Protective cover; 2. First transmission rod; 1201. First drive pin; 1202. Drive wedge; 1203. First drive ramp; 1204. Mating protrusion; 13. Turntable; 1301. First drive groove; 14. Handle; 15. Sealing cover; 16. Sealing ring; 1601. Second slot; 17. Slip ring; 1701. First slot; 1702. Second drive groove; 18. Third elastic structure; 19. Second transmission rod; 1901. Second drive pin; 1902. Third contact part. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] The following is combined Figures 1 to 10 The following describes embodiments of the present invention.

[0046] Embodiments of the present invention provide a furnace wall over-temperature early warning device, combined with Figures 1 to 3 As shown, it includes: a heat-conducting plate 1, which has mounting holes 101 and a snap-fit ​​seat 2, each of which has a first snap-fit ​​groove 201; a temperature measuring component 3, specifically a thermocouple component, which has a mounting shell 4 on its exterior, and a locking component on its exterior, the locking component including a snap-fit ​​structure, the snap-fit ​​structure including a first elastic structure 5 and a first locking tongue 6, the first end of the first elastic structure 5 being connected to the mounting shell 4 and the second end being connected to the first locking tongue 6, the first locking tongue 6 being able to slide relative to the mounting shell 4 in a direction perpendicular to the axis of the mounting hole 101; the locking component has a locked position and an unlocked position relative to the snap-fit ​​seat 2, when the locking component is in the locked position, at least part of the first locking tongue 6 extends into the first snap-fit ​​groove 201, specifically, part extends into the first snap-fit ​​groove 201 and the other part is located outside the first snap-fit ​​groove 201; when the locking component is in the unlocked position, the first locking tongue 6 disengages from the first snap-fit ​​groove 201.

[0047] In this embodiment, the furnace wall overheating early warning device, when installing the temperature measuring component 3, aligns the mounting shell 4 of the temperature measuring component 3 with the mounting hole 101 of the heat-conducting plate 1 and inserts it. During insertion, the first locking tongue 6, under the pressure of the locking seat 2, overcomes the elastic force of the first elastic structure 5 and slides in the direction of the axis of the mounting hole 101. After the mounting shell 4 is inserted into place, the first locking tongue 6 is reset under the elastic force of the first elastic structure 5, and its part extends into the first slot 201 on the locking seat 2, so that the locking component is stable in the locked position. At this time, the temperature measuring component 3 and the heat-conducting plate 1 are relatively fixed, and the temperature of the boiler tube wall can be monitored in real time.

[0048] When the temperature sensing component 3 malfunctions or requires calibration, the operator only needs to apply external force to disengage the first locking tongue 6 from the first slot 201, allowing the temperature sensing component 3 to be pulled off the heat-conducting plate 1 without removing any bolts. To replace the temperature sensing component 3, simply repeat the above installation steps for a quick replacement.

[0049] The furnace wall over-temperature early warning device provided in this embodiment can quickly disassemble and assemble the temperature measuring component 3 by locking the component and engaging the mounting base 2. The operation can be completed without the aid of tools, which can greatly shorten the maintenance time, reduce the difficulty of operation for operators in high temperature and confined space, and effectively shorten the maintenance cycle.

[0050] It should be noted that the structure of the thermocouple assembly and its temperature measurement principle are existing technologies and are clear to those skilled in the art; therefore, this specification will not provide a detailed description of them.

[0051] Specifically, the first elastic structure 5 is a spring. Compared with elastic materials such as rubber and polyurethane, springs have a more stable elastic coefficient and a longer service life. They are not prone to aging, creep or permanent deformation under the high temperature conditions of boilers, and can maintain a constant elastic force output for a long time, ensuring that the first locking tongue 6 can reliably reset during each disassembly and assembly process.

[0052] Furthermore, such as Figure 3 and Figure 4 As shown, a second slot 202 is provided on the inner wall of the first slot 201; the locking structure also includes a second elastic structure 7 and a second locking tongue 8. The first end of the second elastic structure 7 is connected to the locking seat 2, and the second end is connected to the second locking tongue 8. The second locking tongue 8 is slidably connected to the first locking tongue 6, so that the second locking tongue 8 can slide relative to the mounting shell 4 in a direction parallel to the axis of the mounting hole 101; when the locking assembly is in the locked position, at least part of the second locking tongue 8 extends into the second slot 202, specifically, part of it extends into the second slot 202, and the other part is located outside the second slot 202; when the locking assembly is in the unlocked position, the second locking tongue 8 disengages from the second slot 202.

[0053] Specifically, the second elastic structure 7 is a spring.

[0054] During installation of the temperature sensing component 3, the mounting shell 4 of the temperature sensing component 3 is aligned with the mounting hole 101 of the heat-conducting plate 1 and inserted. During insertion, the first locking tongue 6 is initially pressed by the locking seat 2, overcoming the elastic force of the first elastic structure 5 and sliding. As the mounting shell 4 continues to penetrate, when the first locking tongue 6 reaches the position of the first slot 201, the first locking tongue 6 resets under the elastic force of the first elastic structure 5, and part of it extends into the first slot 201, achieving initial locking. At the same time, the second locking tongue 8 aligns with the second slot 202 and, under the elastic force of the second elastic structure 7, slides in a direction parallel to the axis of the mounting hole 101, extending into the second slot 202, forming secondary locking. At this time, the locking assembly is in the locked position, and the temperature sensing component 3 and the heat-conducting plate 1 are doubly fixed through the radial locking of the first locking tongue 6 and the first slot 201 and the axial locking of the second locking tongue 8 and the second slot 202. During disassembly, first apply external force to disengage the second locking tongue 8 from the second slot 202, and then continue to apply force to disengage the first locking tongue 6 from the first slot 201, so that the temperature measuring component 3 can be pulled out from the heat-conducting plate 1.

[0055] The dual-locking design enhances the vibration resistance of the temperature sensing component 3 under harsh operating conditions. Even when subjected to continuous high-frequency vibration or thermal expansion shock during boiler operation, the temperature sensing component 3 will not easily loosen or shift, thereby improving the long-term stability and measurement accuracy of temperature monitoring.

[0056] Furthermore, the end of the second locking tongue 8 facing away from the second elastic structure 7 is provided with a locking tooth 801. When the locking assembly is in the locked position, the locking tooth 801 extends into the second slot 202. The locking tooth 801 can enter the second slot 202 more smoothly when locked, ensuring the reliability of the locking of the second locking tongue 8.

[0057] Furthermore, such as Figure 3 and Figure 5 As shown, the latch seat 2 is provided with a first contact portion 203; the first locking tongue 6 is provided with a guide slope 601, which is used to contact the contact portion during the sliding process of the first locking tongue 6 towards the axis of the mounting hole 101.

[0058] During the installation of the temperature measuring component 3, as the mounting shell 4 moves towards the heat-conducting plate 1, the first contact portion 203 applies a force to the guide slope 601. This force is perpendicular to the guide slope 601 and, after decomposition, generates a component force perpendicular to the axis of the mounting hole 101. This component drives the first locking tongue 6 to slide towards the axis of the mounting hole 101, overcoming the elastic force of the first elastic structure 5. After the first locking tongue 6 is fully retracted, the mounting shell 4 can continue to penetrate deeper. When the mounting shell 4 is inserted into place and the first locking tongue 6 passes the first contact portion 203 and reaches the position of the first slot 201, the first locking tongue 6 resets under the elastic force of the first elastic structure 5, and part of it extends into the first slot 201, achieving locking.

[0059] By providing a guide slope 601 on the first locking tongue 6 and a first contact portion 203 on the locking seat 2 to cooperate with it, the automatic guidance and driving function of the temperature measuring component 3 during installation can be realized. During installation, the operator only needs to insert the mounting shell 4 into the direction of the heat-guiding plate 1, and the cooperation between the guide slope 601 and the first contact portion 203 will automatically drive the first locking tongue 6 to retract, without the need for the operator to press or adjust it, which helps to improve the installation efficiency of the temperature measuring component 3.

[0060] Furthermore, combined Figures 1 to 7 As shown, the snap-fit ​​structure also includes a push block 9 and a push rod 10; the push block 9 can slide relative to the mounting shell 4 in a direction perpendicular to the axis of the mounting hole 101; the push rod 10 is slidably connected to the push block 9, so that the push rod 10 can slide relative to the push block 9 and the first locking tongue 6 in a direction parallel to the axis of the mounting hole 101; the second locking tongue 8 is connected to the push rod 10.

[0061] When disassembling the temperature measuring component 3, pressing the push rod 10 can move the second locking tongue 8 in the direction of compressing the second elastic structure 7, causing the second locking tongue 8 to disengage from the second slot 202; sliding the push block 9 can move the first locking tongue 6 in the direction of compressing the first elastic structure 5. The push block 9 and push rod 10 make the movement control of the first locking tongue 6 and the second locking tongue 8 more convenient and reliable.

[0062] Specifically, the second locking tongue 8 is provided with a sleeve part 802, the first locking tongue 6 is provided with a guide ring cavity 602, the sleeve part 802 is slidably disposed in the guide ring cavity 602, and one end of the push rod 10 is connected to the sleeve part 802, so that the push rod 10 can drive the second locking tongue 8 to slide stably.

[0063] Furthermore, multiple snap-fit ​​seats 2 are provided, and the multiple snap-fit ​​seats 2 are circumferentially distributed on the heat-conducting plate 1 around the axis of the mounting hole 101; multiple snap-fit ​​structures are provided, and they are matched one-to-one with the snap-fit ​​seats 2. Specifically, there are four snap-fit ​​seats 2 and four snap-fit ​​structures, and they are evenly distributed around the axis of the mounting hole 101.

[0064] By setting multiple snap-fit ​​seats 2 and multiple snap-fit ​​structures and making them correspond one-to-one, that is, one snap-fit ​​seat 2 corresponds to one snap-fit ​​structure for connection, and multiple snap-fit ​​seats 2 are evenly distributed around the axis of the mounting hole 101, the temperature measuring component 3 and the heat-conducting plate 1 can maintain a uniform and stable contact pressure, further improving the stability of the temperature measuring component 3 after locking.

[0065] Furthermore, the snap-fit ​​structure also includes a first transmission rod 12, which is slidable relative to the mounting shell 4 in a direction perpendicular to the axis of the mounting hole 101. The first end of the first transmission rod 12 is provided with a first drive pin 1201, and the second end is provided with a drive wedge 1202. The drive wedge 1202 is slidably connected to the push block 9, allowing the drive wedge 1202 to slide relative to the push block 9 in a direction perpendicular to the axis of the mounting hole 101. The drive wedge 1202 is provided with a first drive inclined surface 1203. The locking assembly also includes a turntable 13, which is rotatably fitted onto the outer periphery of the mounting shell 4. The turntable 13 is provided with multiple first drive grooves 1. 301, a plurality of first drive slots 1301 correspond one-to-one with first drive pins 1201, and the first drive pins 1201 are slidably disposed in the corresponding first drive slots 1301; the end of the push rod 10 away from the heat-conducting plate 1 is provided with a second contact portion 1001; the first drive slot 1301 is used to drive the first drive pin 1201 to slide in a direction perpendicular to the axis of the mounting hole 101 when the turntable 13 rotates; the first drive inclined surface 1203 is used to drive the second contact portion 1001 to move in a direction parallel to the axis of the mounting hole 101 during the part of the first transmission rod 12 sliding in a direction perpendicular to the axis of the mounting hole 101.

[0066] Specifically, the drive wedge 1202 is provided with a mating protrusion 1204, and the push block 9 is provided with a sliding groove 901. The mating protrusion 1204 is slidably disposed in the sliding groove 901, so that the drive wedge 1202 can slide relative to the push block 9, and when the mating protrusion 1204 slides to the end of the sliding groove 901, it can also drive the push block 9 to slide. The cross-sections of the second contact portion 1001 and the push rod 10 are both circular. The diameter of the second contact portion 1001 is larger than the diameter of the push rod 10, which can prevent the first contact portion 203 from entering the interior of the push block 9.

[0067] When the temperature measuring component 3 needs to be disassembled, simply rotate the turntable 13. When the turntable 13 is rotated, the wall of the first drive groove 1301 on the turntable 13 applies a force to the first drive pin 1201. This force is decomposed along a direction perpendicular to the axis of the mounting hole 101, driving the first drive pin 1201 to move along the same direction. Since multiple first drive grooves 1301 correspond one-to-one with multiple first drive pins 1201, the rotation of the turntable 13 can simultaneously drive all first transmission rods 12 to move synchronously, ensuring consistent operation of multiple snap-fit ​​structures. The first transmission rods 12, the first drive pins 1201, and the drive wedge 1202 move synchronously. When the drive wedge 1202 moves towards the axis of the mounting hole 101, the first drive inclined surface 1203 can contact the second contact portion 1001 and apply a force to it. This force generates a component force along the axis of the push rod 10, pushing the push rod 10 to move in a direction parallel to the axis of the mounting hole 101. When the push rod 10 moves, it drives the second locking tongue 8 to move in the direction of compressing the second elastic structure 7, causing the second locking tongue 8 to disengage from the second slot 202. As the turntable 13 continues to rotate, it drives the wedge 1202 to continue sliding, causing the push block 9 to slide in a direction perpendicular to the axis of the mounting hole 101, thereby causing the first locking tongue 6 to disengage from the first slot 201. At this time, the temperature measuring component 3 can be pulled out.

[0068] When installing the temperature measuring component 3, the turntable 13 is rotated in the opposite direction. The groove wall of the first drive groove 1301 drives the first drive pin 1201 to slide in the opposite direction. The first transmission rod 12 drives the drive wedge 1202 to move in the opposite direction. During this process, the push rod 10 gradually resets under the elastic force of the second elastic structure 7. The second locking tongue 8 re-enters the second slot 202. As the turntable 13 continues to rotate, the drive wedge 1202 drives the push block 9 to move in the opposite direction, so that the first locking tongue 6 re-enters the first slot 201.

[0069] Through the coordinated design of the turntable 13, the first transmission rod 12, and the driving wedge 1202, the complex multi-point synchronous operation is simplified into a simple rotational action. Operators only need to rotate the turntable 13 to simultaneously drive multiple locking structures to complete synchronous locking or unlocking, eliminating the need to operate each locking structure individually, thus significantly improving the assembly and disassembly efficiency of the temperature sensing component 3. Simultaneously, the turntable 13 is fitted around the outer periphery of the mounting shell 4, providing ample operating space. Even in confined or poorly lit boiler environments, it can be easily gripped and rotated, reducing operational difficulty. The entire locking assembly has a compact structure, adding no extra volume, facilitating integrated installation within limited spaces.

[0070] Optionally, the first drive groove 1301 can be an arc-shaped groove or an oblique groove. In this embodiment, the first drive groove 1301 is an oblique groove. The first drive pin 1201 is a cylindrical protrusion structure, and its cylindrical surface forms a line contact with the groove wall of the oblique groove. Compared with square or irregular protrusions, it has a smaller contact area and frictional resistance, making the turntable 13 rotate more smoothly and the operation more labor-saving.

[0071] Specifically, the first drive groove 1301 is configured such that when the first drive pin 1201 abuts against the first end of the first drive groove 1301, a portion of the first locking tongue 6 extends into the first slot 201, and a portion of the second locking tongue 8 extends into the second slot 202, while simultaneously engaging with the first end of the slide groove 901 via the protrusion 1204; when the first drive pin 1201 abuts against the second end of the first drive groove 1301, the first locking tongue 6 disengages from the first slot 201, and the second locking tongue 8 disengages from the second slot 202, while simultaneously engaging with the second end of the slide groove 901 via the protrusion 1204.

[0072] After the operator inserts the temperature measuring component 3 into the mounting hole 101 of the heat-conducting plate 1, the turntable 13 is rotated to a certain extreme position, so that each first drive pin 1201 abuts against the first end of its corresponding first drive groove 1301. In this position, the first locking tongue 6 extends into the first slot 201, and the second locking tongue 8 extends into the second slot 202, achieving double locking. When it is necessary to disassemble the temperature measuring component 3, the operator rotates the turntable 13 in the opposite direction to another extreme position, so that each first drive pin 1201 abuts against the second end of its corresponding first drive groove 1301. During this process, the mating protrusion 1204 slides from the first end to the second end of the slide groove 901, allowing the driving wedge 1202 to push the push rod 10 first without pushing the push block 9, thus causing the second locking tongue 8 to overcome the elastic force of the second elastic structure 7 and disengage from the second slot 202. When the mating protrusion 1204 abuts against the second end of the slide groove 901, the driving wedge 1202 pushes the push block 9, causing the first locking tongue 6 to overcome the elastic force of the first elastic structure 5 and disengage from the first slot 201. The double locking is released sequentially, and the temperature measuring component 3 can be easily pulled out.

[0073] By associating the locked and unlocked states with the two ends of the first drive groove 1301 respectively, the operator only needs to rotate the turntable 13 to the limit position to ensure that the locking component is in a fully locked or fully unlocked state, without relying on visual inspection or experience to judge, which can avoid problems caused by insufficient locking or incomplete unlocking; at the same time, the endpoints of the first drive groove 1301 can provide clear operation feedback, which is conducive to improving the efficiency of disassembly and assembly of the temperature measuring component 3.

[0074] Furthermore, the locking assembly also includes a sealing cover 15, which is coaxially and fixedly connected to the mounting shell 4, and a snap-fit ​​structure is connected to the sealing cover 15; when the locking assembly is in the locked position, the end face of the sealing cover 15 abuts against the heat-conducting plate 1.

[0075] When locked, the sealing cover 15 is tightly abutted against the end face of the heat-conducting plate 1, which can form a reliable seal between the mounting shell 4 and the heat-conducting plate 1, effectively preventing high-temperature flue gas, dust and water vapor from entering the mounting hole 101. At the same time, it prevents the snap-fit ​​structure, elastic elements and other components from jamming, rusting or elastic failure due to contamination or corrosion, thereby improving the long-term reliability and service life of the locking assembly. Furthermore, by increasing the surface contact support points, the vibration resistance stability of the temperature measuring component 3 is enhanced, which can suppress the micro-movement or loosening of the temperature measuring component 3 caused by the high-frequency vibration of the boiler, further improving the stability of temperature monitoring.

[0076] Specifically, the snap-fit ​​structure also includes a protective cover 11, which is connected to the periphery of the sealing cover 15. The first elastic structure 5 is located inside the sealing cover 15, and the end of the first elastic structure 5 facing away from the first locking tongue 6 is connected to the sealing cover 15. When the locking assembly is in the locked position, the protective cover 11 fits against the side of the snap-fit ​​seat 2 facing the axis of the mounting hole 101, and the protective cover 11 and the snap-fit ​​seat 2 form a closed cavity, in which the first locking tongue 6 is located.

[0077] By completely enclosing key moving parts such as the first locking tongue 6 and the first elastic structure 5 inside the sealed cavity, the high-temperature flue gas, dust and water vapor in the boiler site can be effectively blocked from entering, preventing the first elastic structure 5 from rusting and failing and the first locking tongue 6 from getting stuck due to dust accumulation, thus significantly improving the long-term reliability of the locking assembly. At the same time, the fit between the protective cover 11 and the snap-fit ​​seat 2 forms rigid support and mechanical limit, which can further improve the vibration resistance of the temperature measuring assembly 3.

[0078] Furthermore, a handle 14 is provided on the outer periphery of the turntable 13. The handle 14 allows the operator to easily manually rotate the turntable 13.

[0079] Furthermore, combining 1, Figure 2 , Figure 5 , Figure 8 , Figure 9 and Figure 10 As shown, the locking assembly also includes a sealing ring 16, which is coaxially connected to the sealing cover 15; when the locking assembly is in the locked position, the sealing ring 16 abuts against the heat-conducting plate 1.

[0080] The sealing ring 16 can be made of an elastic material. When the locking assembly is in the locked position, the sealing ring 16 is compressed and deformed. The elastic material generates a rebound force after being compressed, which applies a continuous reverse thrust to the sealing cover 15 and the heat-conducting plate 1. This thrust can offset the small displacement caused by boiler vibration or thermal expansion impact, so that the first locking tongue 6 and the first slot 201 always remain tightly fitted, effectively eliminating the loose gap that may occur in the locking assembly during long-term operation, thereby enhancing the vibration resistance stability and long-term locking reliability of the temperature measuring assembly 3. At the same time, after the sealing ring 16 is compressed, it forms an elastic sealing interface with the heat-conducting plate 1. Together with the seal formed by the sealing cover 15 end face abutting against the heat-conducting plate 1, it constitutes a double seal, which can further improve the connection sealing performance between the temperature measuring assembly 3 and the heat-conducting plate 1.

[0081] Optionally, the sealing ring 16 can be fixedly connected to the sealing cover 15, in which case the sealing ring 16 protrudes from the surface of the sealing cover 15; the sealing ring 16 can also be slidably connected to the sealing cover 15, in which case the sealing ring 16 can retract into the sealing cover 15.

[0082] In this embodiment, the locking assembly further includes a slip ring 17 and a third elastic structure 18. The slip ring 17 is located on the side of the sealing ring 16 away from the heat-conducting plate 1 and is coaxially fixedly connected to the sealing ring 16. Both the slip ring 17 and the sealing ring 16 can be slidably fitted onto the outer periphery of the mounting shell 4, and the outer peripheral side of the slip ring 17 and the outer peripheral side of the sealing ring 16 are in contact with the inner peripheral side of the sealing cover 15. The slip ring 17 is provided with a first slot 1701, and the inner wall of the first slot 1701 is provided with a second drive groove 1702. The third elastic structure 18 is a spring, the first end of which is connected to the sealing cover 15, and the second end is connected to the side of the slip ring 17 away from the sealing ring 16.

[0083] Furthermore, the snap-fit ​​structure also includes a second transmission rod 19. The first end of the second transmission rod 19 passes through the sealing cover 15 and is slidably inserted into the first slot 1701, so that the second transmission rod 19 can slide relative to the sealing cover 15 in a direction perpendicular to the axis of the mounting hole 101. The first end of the second transmission rod 19 is provided with a second drive pin 1901, which is slidably disposed in the second drive groove 1702. The second end of the second transmission rod 19 is provided with a third contact portion 1902.

[0084] Furthermore, the latching base 2 is provided with a second driving slope 204, which extends from the side of the latching base 2 facing the axis of the mounting hole 101 to the surface of the heat-conducting plate 1. The second driving slope 204 is used to drive the third contact portion 1902 to slide in a direction perpendicular to the axis of the mounting hole 101 during the part of the movement of the third contact portion 1902 along the axis parallel to the axis of the mounting hole 101. The second driving groove 1702 is used to cause the slip ring 17 to slide in a direction parallel to the axis of the mounting hole 101 during at least the part of the sliding of the second driving pin 1901 along the direction perpendicular to the axis of the mounting hole 101.

[0085] When the operator inserts the mounting shell 4 of the temperature measuring component 3 into the mounting hole 101 of the heat-conducting plate 1, the mounting shell 4 moves towards the heat-conducting plate 1. In the later stages of insertion, the third contact portion 1902 contacts the second driving ramp 204. As the mounting shell 4 continues to penetrate deeper, the third contact portion 1902 continues to move towards the heat-conducting plate 1 in a direction parallel to the axis of the mounting hole 101. The second driving ramp 204 applies a compressive force to the third contact portion 1902, which generates a component force perpendicular to the axis of the mounting hole 101. This force drives the third contact portion 1902, along with the second transmission rod 19 and the second driving pin 1901, to slide towards the axis of the mounting hole 101, causing the second driving pin 1901 to slide along the second driving groove 1702 within the first slot 1701 of the slip ring 17. Due to the guiding effect of the second driving groove 1702, the sliding of the second driving pin 1901 perpendicular to the axis of the mounting hole 101 is converted into the sliding of the slip ring 17 towards the heat-conducting plate 1 in a direction parallel to the axis of the mounting hole 101. The slip ring 17 drives the sealing ring 16, which is fixed coaxially with it, to move synchronously. When the mounting shell 4 is inserted into place and the locking assembly is in the locked position, the sealing ring 16 presses against the heat-conducting plate 1, and at the same time, the end face of the sealing cover 15 abuts against the heat-conducting plate 1, forming a double seal.

[0086] During the sliding of slip ring 17 and sealing ring 16 to heat conduction plate 1, the third elastic structure 18 is gradually stretched; during the process of pulling out the mounting shell 4, the third elastic structure 18 can pull slip ring 17 and sealing ring 16 away from heat conduction plate 1, and finally cause slip ring 17 and sealing ring 16 to retract into the sealing cover 15.

[0087] Understandably, omitting the slip ring 17 and directly placing the second drive groove 1702 on the sealing ring 16 would not only make it difficult to guarantee the accuracy and reliability of motion transmission, but also easily lead to premature tearing or failure of the sealing ring 16 due to local stress concentration. Adding a rigid slip ring 17 and placing the second drive groove 1702 on it can accurately transmit the movement of the second transmission rod 19 and withstand the friction and driving force generated when the second drive groove 1702 engages with the second drive pin 1901, thus preventing premature damage to the sealing ring 16. Furthermore, the sealing ring 16 is slidable; during the outward pulling of the temperature measuring component 3, the third elastic structure 18 can pull the slip ring 17 and the sealing ring 16 back synchronously, allowing the sealing ring 16 to be housed inside the sealing cover 15, preventing the sealing ring 16 from protruding. This effectively prevents the sealing ring 16 from being scratched or bumped against the furnace wall, support or other components during disassembly, transportation and temporary placement, thus preventing deformation and damage. At the same time, it reduces the adhesion of dust and impurities to the sealing surface of the sealing ring 16, ensuring that the sealing ring 16 still has good sealing performance when reinstalled, and improving the sealing reliability of the device after repeated disassembly and reassembly under harsh working conditions.

[0088] Furthermore, the sealing ring 16 is provided with a second slot 1601, and the first slot 1701 communicates with the second slot 1601. The first end of the second transmission rod 19 is slidably inserted into the cavity formed by the first slot 1701 and the second slot 1601. By providing the second slot 1601, the width of the second transmission rod 19 can be increased accordingly, thereby improving its bending strength and structural rigidity, making it less prone to bending deformation when subjected to the force transmitted by the second drive groove 1702, ensuring the accuracy and reliability of motion transmission. It is understood that the provision of the second slot 1601 has virtually no impact on the service life of the sealing ring 16, and in practical applications, it can be selected and provided as needed.

[0089] Optionally, the second drive groove 1702 can be an arc-shaped groove or an oblique groove. In this embodiment, the second drive groove 1702 is an oblique groove. The second drive pin 1901 is a cylindrical protrusion structure, and its cylindrical surface forms a line contact with the groove wall of the oblique groove. Compared with square or irregular protrusions, it has a smaller contact area and frictional resistance, thus preventing the slip ring 17 from getting stuck.

[0090] Specifically, in the same snap-fit ​​structure, there are two second transmission rods 19 arranged in parallel. When the two second transmission rods 19 slide synchronously, they can share the force exerted by the second drive groove 1702 on the second drive pin 1901, avoiding the deviation or jamming of a single second transmission rod 19 due to uneven force, and making the movement of the slip ring 17 more stable and smooth. The third contact part 1902 has an acute angle structure with a rounded corner at its tip. The acute angle structure can concentrate the contact force, making the interaction between the third contact part 1902 and the second drive inclined surface 204 more sensitive. It can quickly respond and drive the second transmission rod 19 to slide in the later stage of insertion and the initial stage of removal of the mounting shell 4, ensuring that the action of the sealing ring 16 snapping into and out of the mounting ring groove is timely and reliable. At the same time, the rounded corner at the tip can avoid the sharp edge from scratching and damaging the second drive inclined surface 204, reducing the friction and wear of the contact surface, and making the sliding smoother.

[0091] Although embodiments of the invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A furnace wall overheating early warning device, characterized in that, include: A heat-conducting plate (1) is provided with mounting holes (101) and a snap-fit ​​seat (2), and each snap-fit ​​seat (2) is provided with a first snap-fit ​​groove (201); Temperature measuring component (3), the temperature measuring component (3) is provided with an external mounting shell (4), the mounting shell (4) is provided with a locking component, the locking component includes a snap-fit ​​structure, the snap-fit ​​structure includes a first elastic structure (5) and a first locking tongue (6), the first end of the first elastic structure (5) is connected to the mounting shell (4), the second end is connected to the first locking tongue (6), the first locking tongue (6) is able to slide relative to the mounting shell (4) in a direction perpendicular to the axis of the mounting hole (101); The locking assembly has a locked position and an unlocked position relative to the latch (2). When the locking assembly is in the locked position, the first latch (6) extends at least partially into the first latch (201). When the locking assembly is in the unlocked position, the first latch (6) disengages from the first latch (201).

2. The furnace wall over-temperature early warning device according to claim 1, characterized in that, The inner wall of the first card slot (201) is provided with a second card slot (202); The snap-fit ​​structure further includes a second elastic structure (7) and a second locking tongue (8). The first end of the second elastic structure (7) is connected to the snap-fit ​​seat (2), and the second end is connected to the second locking tongue (8). The second locking tongue (8) is slidably connected to the first locking tongue (6), so that the second locking tongue (8) can slide relative to the mounting shell (4) in a direction parallel to the axis of the mounting hole (101). When the locking assembly is in the locked position, the second latch (8) extends at least partially into the second slot (202), and when the locking assembly is in the unlocked position, the second latch (8) disengages from the second slot (202).

3. The furnace wall over-temperature early warning device according to claim 2, characterized in that, The latch (2) is provided with a first contact portion (203); the first latch (6) is provided with a guide slope (601), which is used to contact the contact portion during at least part of the process of the first latch (6) sliding toward the heat conduction plate (1) so that the first latch (6) slides toward the axis of the mounting hole (101).

4. The furnace wall over-temperature early warning device according to claim 2, characterized in that, The snap-fit ​​structure further includes a push block (9) and a push rod (10); the push block (9) is slidable relative to the mounting shell (4) in a direction perpendicular to the axis of the mounting hole (101); the push rod (10) is slidably connected to the push block (9), so that the push rod (10) is slidable relative to the push block (9) and the first locking tongue (6) in a direction parallel to the axis of the mounting hole (101); the second locking tongue (8) is connected to the push rod (10).

5. The furnace wall over-temperature early warning device according to claim 4, characterized in that, Multiple snap-fit ​​seats (2) are provided, and multiple snap-fit ​​seats (2) are circumferentially distributed on the heat-conducting plate (1) around the axis of the mounting hole (101); multiple snap-fit ​​structures are provided, and each snap-fit ​​seat (2) is matched with the other snap-fit ​​seat (2).

6. The furnace wall over-temperature early warning device according to claim 5, characterized in that, The snap-fit ​​structure further includes a first transmission rod (12), which is able to slide relative to the mounting shell (4) in a direction perpendicular to the axis of the mounting hole (101). The first end of the first transmission rod (12) is provided with a first driving pin (1201), and the second end is provided with a driving wedge (1202). The driving wedge (1202) is slidably connected to the push block (9), so that the driving wedge (1202) is able to slide relative to the push block (9) in a direction perpendicular to the axis of the mounting hole (101). The driving wedge (1202) is provided with a first driving inclined surface (1203). The locking assembly also includes a turntable (13), which is rotatably fitted around the outer periphery of the mounting shell (4). The turntable (13) is provided with a plurality of first drive grooves (1301), and the plurality of first drive grooves (1301) correspond one-to-one with the first drive pins (1201). The first drive pins (1201) are slidably disposed in the corresponding first drive grooves (1301). The push rod (10) has a second contact portion (1001) at one end away from the heat-conducting plate (1); The first drive groove (1301) is used to drive the first drive pin (1201) to slide in a direction perpendicular to the axis of the mounting hole (101) when the turntable (13) rotates; the first drive inclined surface (1203) is used to drive the second contact portion (1001) to move in a direction parallel to the axis of the mounting hole (101) during at least a portion of the sliding of the first transmission rod (12) in a direction perpendicular to the axis of the mounting hole (101).

7. The furnace wall over-temperature early warning device according to claim 6, characterized in that, The first drive groove (1301) is configured such that when the first drive pin (1201) abuts against the first end of the first drive groove (1301), at least a portion of the first locking tongue (6) extends into the first slot (201), and at least a portion of the second locking tongue (8) extends into the second slot (202); when the first drive pin (1201) abuts against the second end of the first drive groove (1301), the first locking tongue (6) disengages from the first slot (201), and the second locking tongue (8) disengages from the second slot (202).

8. The furnace wall over-temperature early warning device according to any one of claims 1 to 7, characterized in that, The locking assembly also includes a sealing cover (15), which is coaxially and fixedly connected to the mounting shell (4), and the snap-fit ​​structure is connected to the sealing cover (15); when the locking assembly is in the locked position, the end face of the sealing cover (15) abuts against the heat-conducting plate (1).

9. The furnace wall over-temperature early warning device according to claim 8, characterized in that, The locking assembly also includes a sealing ring (16), which is coaxially connected to the sealing cover (15); when the locking assembly is in the locked position, the sealing ring (16) abuts against the heat-conducting plate (1).

10. The furnace wall over-temperature early warning device according to claim 9, characterized in that, The locking assembly further includes a slip ring (17) and a third elastic structure (18). The slip ring (17) is coaxially fixedly connected to the sealing ring (16). Both the slip ring (17) and the sealing ring (16) are slidably fitted onto the outer periphery of the mounting shell (4). The outer peripheral side of the slip ring (17) and the outer peripheral side of the sealing ring (16) are both in contact with the inner peripheral side of the sealing cover (15). The slip ring (17) is provided with a first slot (1701), and the first slot (1701) is provided with a second drive groove (1702). The third elastic structure (18) is connected between the sealing cover (15) and the slip ring (17). The snap-fit ​​structure further includes a second transmission rod (19), which slidably passes through the sealing cover (15) and its first end is inserted into the first slot (1701). The first end of the second transmission rod (19) is provided with a second driving pin (1901), which is slidably disposed in the second driving groove (1702). The second end of the second transmission rod (19) is provided with a third contact portion (1902). The card holder (2) is provided with a second driving slope (204), which is used to drive the third contact part (1902) to slide in a direction perpendicular to the axis of the mounting hole (101) during at least a part of the process in which the third contact part (1902) moves along the axis parallel to the axis of the mounting hole (101); The second drive groove (1702) is used to cause the slip ring (17) to slide in a direction parallel to the axis of the mounting hole (101) during at least a portion of the sliding of the second drive pin (1901) in a direction perpendicular to the axis of the mounting hole (101).

Images