A quick plug self-locking blast furnace temperature sensor mounting device

Abstract

The application discloses a quick-insert self-locking blast furnace temperature sensor mounting device, which comprises a mounting base assembly, a quick-insert connector assembly, a self-locking mechanism, a multi-stage sealing system and a dustproof protection assembly; the mounting base assembly comprises a sensor protection shell, a guide cone angle and a flange base connected in sequence; the quick-insert connector assembly comprises a fixedly connected conical plug part and a handle part; a through hole for fixedly mounting a temperature sensor is arranged at the center axis position of the top of the conical plug part along the extension direction of the temperature sensor; the self-locking mechanism comprises a split elastic clamping jaw and an unlocking sleeve; when the unlocking sleeve moves to the contraction end, the opening of the expansion end of the elastic clamping jaw becomes larger, the opening of the contraction end becomes smaller under the action of a quick locking spring, and the temperature sensor is clamped; conversely, when the unlocking sleeve moves to the expansion end, the temperature sensor at the contraction end is in a relaxed state. The application overcomes the short boards of the prior art one by one and provides a reliable mounting solution for blast furnace temperature monitoring.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment technology, specifically to a quick-connect self-locking blast furnace temperature sensor installation device. Background Technology

[0002] my country is a major steel producer with a huge demand for blast furnace ironmaking. In blast furnace ironmaking technology, temperature sensors are crucial for the stability and safety of the unit's operation. However, existing blast furnace temperature sensor installation structures have several significant drawbacks:

[0003] (1) Existing blast furnace temperature sensor installation structures generally suffer from volume redundancy and poor installation adaptability. In some scenarios, it is even necessary to enlarge the mounting holes, which damages the integrity of the furnace shell structure. At the same time, the installation posture of the existing structure is fixed and cannot be adjusted according to the curvature of the blast furnace shell. After installation, the sensor temperature measuring end cannot be fully attached to the measured surface, which further affects the temperature measurement accuracy. (2) The locking mechanism of the existing blast furnace temperature sensor installation structure is poorly designed, with poor locking reliability and weak vibration resistance, and cannot be adapted to the strong vibration conditions of the blast furnace. (3) The sealing performance of the existing blast furnace temperature sensor installation structure is substandard and its anti-pollution ability is extremely poor, which cannot adapt to the high temperature, high dust and strong corrosion conditions of the blast furnace. (4) The disassembly and assembly process of the existing blast furnace temperature sensor installation structure is cumbersome, and the maintenance is difficult and costly, which cannot meet the needs of efficient operation and maintenance of the blast furnace. (5) The existing blast furnace temperature sensor installation structure has narrow scenario adaptability and low standardization, which cannot meet the personalized monitoring needs of different blast furnaces. Meanwhile, the existing structure cannot be adapted to special scenarios such as the renovation of old blast furnaces and micro monitoring points. The reserved installation holes in the furnace shell of old blast furnaces are irregular in size, and the existing fixed-specification installation structure cannot be adapted. The space of micro monitoring points is small, and the existing bulky structure cannot be embedded, which further limits the application range of the device and cannot meet the temperature monitoring needs of blast furnaces of different sizes and operating conditions.

[0004] Therefore, there is an urgent need for an installation device that can effectively solve the above problems. Summary of the Invention

[0005] 1. The technical problem to be solved:

[0006] To address the aforementioned technical problems, this invention provides a quick-connect, self-locking blast furnace temperature sensor installation device. This device is designed to withstand the harsh operating conditions of a blast furnace, including high temperature, high pressure, strong vibration, and high dust levels, while meeting the practical needs of efficient operation and maintenance, safe and stable production, and accurate temperature measurement. It effectively solves pain points in on-site operation and maintenance, improving the device's practicality and economy. This device overcomes the shortcomings of existing technologies one by one, providing a reliable installation solution for blast furnace temperature monitoring.

[0007] 2. Technical Solution:

[0008] A quick-connect self-locking blast furnace temperature sensor installation device, characterized in that it includes a mounting base assembly, a quick-connect connector assembly, a self-locking mechanism, a multi-stage sealing system, and a dustproof protection assembly;

[0009] The mounting base assembly includes a sensor protective housing, a guide cone, and a base with a flange connected in sequence; the sensor protective housing extends into the blast furnace cavity, and its cavity is used to insert the temperature measuring end of the temperature sensor; the temperature sensor extends to the quick-connect connector assembly after passing through the cavity of the guide cone; the base is square, the through hole of the flange is located in the middle of the base, and the base is pre-set with mounting thread holes for fixing and installing to the outer wall of the blast furnace;

[0010] The quick-connect assembly includes a tapered plug-in part and a handle part that are fixedly connected; the tapered plug-in part has a through hole for fixing the temperature sensor at the central axis position of the top of the cone along the extension direction of the temperature sensor; during installation, the temperature sensor is first fixedly installed into the through hole, and then the temperature sensor is inserted into the mounting base assembly by inserting the handle part inward.

[0011] The self-locking mechanism includes a split-type elastic claw and an unlocking sleeve; the retracted end of the elastic claw is fitted into the hollow position of the flange, and a quick-locking spring is provided between the inner wall of the flange and the outer wall of the retracted end of the elastic claw; the middle of the retracted end of the elastic claw is provided with a through hole for engaging the temperature sensor in the direction of the temperature sensor's extension; the outer wall of the expanding end of the elastic claw is fitted with the unlocking sleeve; when the unlocking sleeve moves towards the retracted end, the opening of the expanding end becomes larger, and the opening of the retracted end becomes smaller under the action of the quick-locking spring, thus locking the temperature sensor; conversely, when the unlocking sleeve moves towards the expanding end, the temperature sensor at the retracted end is in a relaxed state;

[0012] The multi-stage sealing system includes first and second stage sealing rings disposed between the tapered insertion part and the unlocking sleeve, and a third stage sealing structure filled with graphite in the tapered insertion part;

[0013] The dust protection assembly includes a purge air path and a silicone dust cover; the purge air path introduces compressed air into the outer cavity of the base and flows out from the outlet of the air path to achieve automatic purging of the inside of the device; the silicone dust cover is fitted onto the outer surface of the device.

[0014] Furthermore, the elastic claw is composed of four lobes, and the four lobes are identical in shape and symmetrically distributed; the inner wall of the through hole at the contracted end of the elastic claw is provided with an annular groove for fixing the temperature sensor.

[0015] Furthermore, the elastic claw is a high-strength, high-temperature resistant stainless steel elastic claw.

[0016] Furthermore, the unlocking sleeve includes a sleeve body and a linkage component; the inner wall of the sleeve body is provided with an annular protrusion along the circumferential direction of the claw, and the outer surface of the protrusion slides along the outer side of the expansion end of the elastic claw with a preset length of travel; the linkage component is sleeved to the outer wall of the sleeve body to drive the sleeve body to move; the inner side of the linkage component is provided with a limiting device for limiting its travel, and the outer side is provided with a return spring for fixing the unlocking sleeve along the insertion and removal direction.

[0017] Furthermore, the guide cone angle of the tapered insertion part of the quick-connect connector assembly is 15°; the outer shell of the quick-connect connector assembly is a sealed shell, and its surface is treated with high-temperature oxidation.

[0018] Furthermore, the unlocking sleeve is a stainless steel unlocking sleeve.

[0019] Furthermore, the first and second stage sealing rings are respectively a nickel-based alloy metal sealing ring with a temperature resistance of 800℃ and a fluororubber O-ring with a temperature resistance of 300℃; wherein the nickel-based alloy metal sealing ring serves as the main sealing ring, and the fluororubber O-ring serves as the auxiliary sealing ring; the graphite filling the tapered insertion part is high-temperature resistant graphite. Furthermore,

[0020] 3. Beneficial effects:

[0021] (1) The present invention provides a quick-plug self-locking blast furnace temperature sensor installation device. In view of the actual working conditions of short blast furnace maintenance window and large number of sensor installations, it designs a convenient and efficient quick-plug installation structure, abandons the cumbersome process of traditional flange bolt fixing and welding fixing, realizes the sensor installation and disassembly in seconds, and shortens the installation time of a single sensor from the traditional 15-30 minutes to less than 10 seconds, significantly improving the overall operation and maintenance efficiency.

[0022] (2) The quick-connect self-locking blast furnace temperature sensor installation device provided by this invention addresses the impact of 0.2-0.5MPa pressure, 1000-1500℃ temperature, and corrosive gases such as CO and H2S inside the blast furnace. It abandons traditional easily aging asbestos gaskets and ordinary sealants, adopting a layered protection design: the first level is an 800℃-resistant nickel-based alloy metal sealing ring as the main seal to resist high-temperature corrosion; the second level is a 300℃-resistant fluororubber O-ring as an auxiliary seal to compensate for small gaps; and the third level is a high-temperature graphite filler as a redundant seal, forming triple protection. The system's sealing pressure can reach 1.0MPa, and the leakage rate is less than 1×10⁻ 9 Pa・m³ / s ensures long-term stable sealing, protecting on-site personnel safety and saving energy.

[0023] (3) The present invention provides a quick-plug self-locking blast furnace temperature sensor installation device. For the continuous vibration of blast furnaces at 5-20Hz and acceleration of 0.5-2g, this solution designs a stable and reliable self-locking mechanical mechanism to achieve automatic locking upon sensor insertion, raising the vibration resistance level to industrial V4 level and preventing sensor loosening, displacement, detachment, and inaccurate temperature measurement. This mechanism uses four sets of circumferentially distributed high-strength, high-temperature resistant stainless steel elastic claws, forming a segmented structure. Upon insertion, the claws automatically open and spring into the annular groove of the base after insertion. The locking force is greater than 500N axial tension and can withstand 20g impact without loosening, ensuring accurate and continuous temperature measurement data and avoiding equipment damage and production interruption.

[0024] (4) The quick-connect self-locking blast furnace temperature sensor installation device provided by the present invention enables online non-stop sensor replacement through structural optimization, eliminating the need for shutdown for cooling, flange removal, or weld point removal, thus significantly shortening maintenance time and reducing costs. Considering the average service life of sensors of 6-12 months, the synergistic design of the quick-connect structure and self-locking mechanism allows maintenance personnel to quickly remove the faulty sensor and insert a new sensor to complete the locking process by simply pulling the unlocking sleeve. The entire process takes no more than 30 seconds and does not affect normal blast furnace production. Furthermore, the modular design allows for independent replacement of each component, eliminating the need for a complete replacement device, saving 85% of annual maintenance costs for a single blast furnace.

[0025] (5) The present invention provides a quick-plug self-locking blast furnace temperature sensor installation device, which integrates all-round dust protection components to achieve a protection level of IP68, blocking blast furnace dust intrusion and ensuring long-term stable temperature measurement accuracy.

[0026] (6) The quick-plug self-locking blast furnace temperature sensor installation device provided by the present invention has the characteristics of standardization and universality of its installation interface, is compatible with the existing blast furnace opening size, does not require large-scale modification of the furnace wall, facilitates the upgrading of old equipment, and expands the application range. Attached Figure Description

[0027] Figure 1 This is an external view of a quick-connect self-locking blast furnace temperature sensor mounting device according to the present invention;

[0028] Figure 2 This is a cross-sectional view of a quick-connect self-locking blast furnace temperature sensor mounting device according to the present invention;

[0029] Figure 3 This is an enlarged view of the quick-connect connector assembly and the self-locking mechanism in this invention;

[0030] Figure 4 This is a schematic diagram of one of the flaps of an elastic chuck.

[0031] Reference numerals: 1. Sensor protective housing; 2. Guide cone angle; 3. Base with flange; 4. Conical insertion part; 5. Handle part; 6. Elastic claw; 7. Unlocking sleeve; 8. Quick-locking spring; 9. Purge air passage; 10. Silicone dust cover; 11. Sleeve body; 12. Linkage component; 13. Limiting device; 14. Return spring; 15. Temperature sensor; 16. First-stage sealing ring; 17. Second-stage sealing ring. Detailed Implementation

[0032] The present invention will now be described in detail with reference to the accompanying drawings.

[0033] As attached Figure 1 To be continued Figure 4 As shown, a quick-connect self-locking blast furnace temperature sensor installation device is characterized by comprising: a mounting base assembly, a quick-connect connector assembly, a self-locking mechanism, a multi-stage sealing system, and a dustproof protection assembly;

[0034] The mounting base assembly includes a sensor protective housing 1, a guide cone 2, and a base 3 with a flange connected in sequence; the sensor protective housing extends into the inner cavity of the blast furnace, and its inner cavity is used to insert the temperature measuring end of the temperature sensor 15; the temperature sensor extends to the quick-connect connector assembly after passing through the cavity of the guide cone; the base is square, the through hole of the flange is located in the middle of the base, and the base is pre-set with mounting thread holes for fixing and installing to the outer wall of the blast furnace;

[0035] The quick-connect assembly includes a tapered plug-in part 4 and a handle part 5 that are fixedly connected; the tapered plug-in part has a through hole for fixing the temperature sensor at the central axis position of the top of the cone along the extension direction of the temperature sensor; during installation, the temperature sensor is first fixedly installed into the through hole, and then the temperature sensor is inserted into the mounting base assembly by inserting the handle part inward.

[0036] The self-locking mechanism includes a split-type elastic claw 6 and an unlocking sleeve 7; the retracted end of the elastic claw is fitted into the hollow position of the flange, and a quick-locking spring 8 is provided between the inner wall of the flange and the outer wall of the retracted end of the elastic claw; the middle of the retracted end of the elastic claw is provided with a through hole for engaging the temperature sensor in the direction of the temperature sensor extension; the outer wall of the expanded end of the elastic claw is fitted with the unlocking sleeve; when the unlocking sleeve moves towards the retracted end, the opening of the expanded end becomes larger, and the opening of the retracted end becomes smaller under the action of the quick-locking spring, and the temperature sensor is locked; conversely, when the unlocking sleeve moves towards the expanded end, the temperature sensor at the retracted end is in a relaxed state;

[0037] The multi-stage sealing system includes first and second stage sealing rings disposed between the tapered insertion part and the unlocking sleeve, and a third stage sealing structure filled with graphite in the tapered insertion part;

[0038] The dust protection assembly includes a purge air passage 9 and a silicone dust cover 10; the purge air passage introduces compressed air into the outer cavity of the base and flows out from the outlet of the air passage to realize automatic purge of the inside of the device; the silicone dust cover is fitted onto the outer surface of the device.

[0039] Furthermore, the elastic claw is composed of four lobes, and the four lobes are identical in shape and symmetrically distributed; the inner wall of the through hole at the contracted end of the elastic claw is provided with an annular groove for fixing the temperature sensor.

[0040] Furthermore, the elastic claw is a high-strength, high-temperature resistant stainless steel elastic claw.

[0041] Furthermore, the unlocking sleeve includes a sleeve body 11 and a linkage member 12; the inner wall of the sleeve body is provided with an annular protrusion along the circumferential direction of the claw, and the outer surface of the protrusion slides along the outer side of the expansion end of the elastic claw with a preset length of travel; the linkage member is sleeved to the outer wall of the sleeve body to drive the sleeve body to move; the inner side of the linkage member is provided with a limiting device 13 for limiting its travel, and the outer side is provided with a return spring 14 for fixing the unlocking sleeve along the insertion and removal direction.

[0042] Furthermore, the guide cone angle of the tapered insertion part of the quick-connect connector assembly is 15°; the outer shell of the quick-connect connector assembly is a sealed shell, and its surface is treated with high-temperature oxidation.

[0043] Furthermore, the unlocking sleeve is a stainless steel unlocking sleeve.

[0044] Furthermore, the first and second stage sealing rings are respectively a nickel-based alloy metal sealing ring with a temperature resistance of 800℃ and a fluororubber O-ring with a temperature resistance of 300℃; wherein the nickel-based alloy metal sealing ring serves as the main sealing ring, and the fluororubber O-ring serves as the auxiliary sealing ring; the graphite filling the tapered insertion part is high-temperature resistant graphite. (See attached image) Figure 2 As shown, 16 and 17 represent the first and second stage sealing rings, respectively; the filler in 4 is graphite.

[0045] Example 1:

[0046] This device employs a quick-connect design with a snap-fit ​​connector assembly, eliminating the cumbersome process of traditional flange bolt and welding fixation. No specialized tools are required; ordinary operators can complete sensor installation and removal after simple training. The installation time for a single sensor is reduced from the traditional 15-30 minutes to less than 1 minute, improving installation efficiency by over 99%. This completely solves the pain points of low efficiency and reliance on specialized personnel in traditional installation methods. Furthermore, the quick-connect structure features a guide cone angle and tactile feedback, allowing for intuitive judgment of installation accuracy and avoiding potential malfunctions caused by improper installation. This design is suitable for the actual working conditions of short blast furnace maintenance windows and a large number of sensor installations, preventing delays in maintenance work due to low installation efficiency and reducing economic losses from unplanned shutdowns.

[0047] This device features an innovative self-locking mechanism, a segmented self-locking mechanical mechanism that replaces traditional threaded and bolted fixing methods. This upgrades the vibration resistance level from the traditional V2 to V4, allowing it to withstand 20g of impact without loosening. The annual sensor loosening rate has been reduced from the traditional 35% to 0%. The mechanism utilizes high-strength, high-temperature resistant stainless steel elastic claws, possessing excellent elasticity and toughness. It can withstand continuous vibration conditions of 5-20Hz and acceleration of 0.5-2g in blast furnaces for extended periods, effectively preventing sensor loosening, displacement, detachment, and inaccurate temperature measurements due to vibration. This ensures the accuracy and continuity of temperature data, preventing equipment damage and production interruptions caused by sensor malfunctions. (See attached image) Figure 4 As shown, in this embodiment, the claw consists of four identical lobes; each lobe has a slot at the installation temperature sensor location, and a protrusion at its tail end for limiting the locking sleeve; in this embodiment, each lobe has a fixing hole in the middle position, and a rotating shaft is provided in the fixing hole to achieve rotatable connection with the device.

[0048] This device, through the coordinated design of the aforementioned quick-connect structure and self-locking mechanism, enables online, non-stop sensor replacement. It eliminates the need for shutdown for cooling, flange removal, or weld point repair. The replacement time for a single sensor is reduced from the traditional 15-30 minutes to less than 1 minute, without affecting normal blast furnace production. Furthermore, its modular design allows for independent replacement of each component, eliminating the need to replace the entire device and significantly reducing spare parts costs. Calculations show that a single blast furnace can save over 85% in maintenance costs annually, amounting to approximately 425,000 yuan per year. This addresses the pain points of high maintenance costs and long maintenance times associated with traditional sensors, aligning with enterprises' needs for cost reduction and efficiency improvement.

[0049] Example 2:

[0050] The overall assembly parameters of this device during installation and startup are as follows: In this embodiment, the device is integrated into a 310S high-temperature resistant stainless steel sealed shell and fixed to the blast furnace wall by welding with a flanged mounting base. The welding depth of the base is 8cm, and no additional reinforcement of the furnace wall is required. The device has an IP68 protection rating and can operate stably for a long time under the conditions of high temperature, high dust, strong corrosion, and strong vibration in a blast furnace. It is suitable for multiple monitoring parts such as the hearth, furnace waist, and hot blast ducts, and can withstand high dust concentrations of 2000mg / m³ and corrosive sulfide gases without additional protective measures.

[0051] Its core component selection and assembly relationship; mounting base assembly: made of 310S high temperature resistant stainless steel, with a temperature resistance of up to 1200℃, the structure is a cylindrical base with flange, 50mm in diameter and 80mm in length, with pre-set M27×2 standard mounting threads, flange diameter 80mm, thickness 10mm, precisely matched with the Φ28mm opening reserved in the blast furnace wall, and becomes a permanent installation interface after welding. High temperature welding material is used at the welding point to ensure the connection is firm and to avoid vibration causing the base to loosen.

[0052] Quick-connect connector assembly: It adopts a push-pull quick-connect design with a 15° guide cone angle, a connector inner diameter of 30mm, and an insertion stroke precisely set to 12mm. It has a built-in keyway positioning mechanism with a keyway width of 5mm and a depth of 3mm, which has an anti-misinsertion function to ensure that the sensor is installed in the only correct direction. The connector surface is treated with high-temperature oxidation to improve corrosion resistance. After being inserted into place, it can produce obvious tactile feedback, which makes it easy for operators to intuitively judge the installation status.

[0053] Self-locking mechanism: It adopts a segmented elastic claw structure, consisting of four sets of high-strength, high-temperature resistant stainless steel elastic claws evenly distributed around the circumference. The claw material is 1Cr18Ni9Ti, with a thickness of 3mm and a length of 20mm, possessing excellent elasticity and toughness. The base is equipped with an annular groove with a depth of 5mm and a width of 4mm. The claws and grooves are fitted with a clearance, and the locking force is greater than 500N axial tensile force. The unlocking sleeve is made of stainless steel, with an inner diameter of 32mm and a length of 30mm. It is linked with the claws, and pulling the unlocking sleeve can make the claws open synchronously.

[0054] Multi-stage sealing system: The first-stage main seal uses a nickel-based alloy metal sealing ring with a temperature resistance of 800℃, model O-ring Φ35×3.55, material Inconel600; the second-stage auxiliary seal uses a fluororubber O-ring with a temperature resistance of 300℃, model O-ring Φ32×2.65, material FKM; the third-stage redundant seal uses high-temperature graphite packing, model flexible graphite packing ring with an outer diameter of 30mm, an inner diameter of 25mm, and a thickness of 5mm, which fills the sealing cavity to form triple protection. The sealing cavity depth is 15mm to ensure sealing reliability.

[0055] Dustproof protection components: The interface is equipped with a silicone rubber dust cover, which is made of high-temperature resistant silicone rubber with a temperature resistance of 200℃, and fits tightly with the quick-connect connector and the base connection part; the built-in purge air interface has an interface specification of M8×1, which can be connected to 0.3-0.5MPa compressed air to realize automatic purge of fine dust.

[0056] Matching sensor selection: Select a K-type thermocouple temperature sensor with a temperature range of 0-1200℃ and an accuracy class of 0.5. The sensor protective sleeve is made of 310S stainless steel, with a diameter of 25mm and a length of 300mm. It is precisely matched with the quick-connect connector and can be directly inserted into the mounting base for fixation.

[0057] Example 3:

[0058] The specific workflow of using this device is as follows:

[0059] Installation preparation stage: Fix the mounting base to the pre-reserved opening in the blast furnace wall by welding through the flange. After welding, check the verticality of the base to ensure that the deviation is less than 0.5mm. Clean the internal groove, sealing cavity and quick-connect interface of the base to remove welding residue and dust. Install the nickel-based alloy sealing ring, fluororubber O-ring and graphite filler of the multi-stage sealing system into the sealing cavity in sequence to ensure that the installation is in place and without deviation. Check the elasticity of the self-locking mechanism claw to ensure that the claw can open and return flexibly.

[0060] Sensor installation procedure: Align the K-type thermocouple sensor with the 15° guide cone angle of the quick-connect connector. Without the need for special tools, manually push the sensor into place. Overcome the elastic force of the claws to allow them to open automatically. When the insertion stroke reaches 12mm, you can feel a clear tactile feedback. At this point, the claws spring into the annular groove of the base under their own elastic force, completing the automatic locking. Confirm that the sensor is securely installed without any looseness, and that the dust cover fits tightly against the interface. The installation is now complete. The entire process takes less than one minute.

[0061] During normal operation: The sensor's temperature measuring end is inserted deep into the blast furnace monitoring area to collect temperature data in real time. The self-locking mechanism continuously functions to resist the continuous vibration of the blast furnace at 10Hz and an acceleration of 1g, ensuring that the sensor remains secure and does not shift. The multi-stage sealing system works simultaneously to prevent leakage of high-temperature gas inside the furnace, with a leakage rate of less than 1×10⁻. 9 Pa・m³ / s; The dustproof protection component blocks dust from entering, and at the same time, compressed air is periodically connected through the purge air interface to automatically blow away fine dust and ensure stable sensor signals.

[0062] Sensor maintenance and replacement: When a sensor reaches the end of its service life or malfunctions, there is no need to stop the machine for cooling. Maintenance personnel can manually pull the unlocking sleeve backward, which will push the four sets of claws to open synchronously and disengage from the annular groove of the base. At this time, the faulty sensor can be quickly pulled out, which takes less than 30 seconds. Clean the quick-connect interface and sealing cavity. If there is aging, replace the new seal. Insert the new sensor and complete the automatic locking to restore monitoring. The entire replacement process does not affect the normal production of the blast furnace. If it is necessary to replace the self-locking mechanism, seals, or other components, the corresponding parts can be disassembled separately without removing the entire installation base.

[0063] Handling harsh operating conditions: When the blast furnace experiences a sudden temperature rise exceeding 800°C, pressure fluctuations exceeding 0.5MPa, or abnormal increases in dust concentration, the redundant seals of the multi-stage sealing system can effectively prevent gas leakage, and the self-locking mechanism can withstand an impact of 20g without loosening; if extreme vibration or dust blockage occurs, the purging force can be increased through the purging gas path to clean the dust and ensure the normal operation of the unit.

[0064] Verification example:

[0065] This verification example demonstrates successful operation of a 48-point temperature monitoring system on the sidewall of a blast furnace hearth: The system boasts extremely high installation efficiency, with all 48 sensors installed in just 18 minutes, compared to 16 hours for traditional flange installation; after 12 months of continuous operation, no sensor loosening or gas leakage was observed, indicating stable sealing performance; temperature measurement accuracy remained stable within ±3℃, a significant improvement over traditional installation methods, with signal stability increased tenfold; a total of 6 online sensor replacements were performed, each taking approximately 30 seconds without requiring downtime and impacting blast furnace production; dust protection was remarkably effective, with no significant dust accumulation at the interfaces after 12 months of operation, and no rust or jamming in the clamps; annual maintenance costs for a single blast furnace decreased from 580,000 yuan to 87,000 yuan, representing an annual cost saving of over 85%, with an investment payback period of less than 3 months. This fully meets the demanding operating conditions of blast furnaces under high temperature, high pressure, strong vibration, and high dust levels, and is well-suited to the actual needs of efficient operation and maintenance and accurate temperature measurement in blast furnaces.

[0066] Although the present invention has been disclosed above with reference to preferred embodiments, these are not intended to limit the invention. Any person skilled in the art can make various changes or modifications without departing from the spirit and scope of the invention. Therefore, the scope of protection of the present invention should be defined by the scope of the claims of this application.

Claims

1. A quick-connect, self-locking blast furnace temperature sensor installation device, characterized in that: This includes mounting base components, quick-connect fitting components, self-locking mechanisms, multi-stage sealing systems, and dust protection components; The mounting base assembly includes a sensor protective housing, a guide cone, and a base with a flange connected in sequence; the sensor protective housing extends into the blast furnace cavity, and its cavity is used to insert the temperature measuring end of the temperature sensor; the temperature sensor extends to the quick-connect connector assembly after passing through the cavity of the guide cone; the base is square, the through hole of the flange is located in the middle of the base, and the base is pre-set with mounting thread holes for fixing and installing to the outer wall of the blast furnace; The quick-connect assembly includes a tapered plug-in part and a handle part that are fixedly connected; the tapered plug-in part has a through hole for fixing the temperature sensor at the central axis position of the top of the cone along the extension direction of the temperature sensor; during installation, the temperature sensor is first fixedly installed into the through hole, and then the temperature sensor is inserted into the mounting base assembly by inserting the handle part inward. The self-locking mechanism includes a split-type elastic claw and an unlocking sleeve; the retracted end of the elastic claw is fitted into the hollow position of the flange, and a quick-locking spring is provided between the inner wall of the flange and the outer wall of the retracted end of the elastic claw; the middle of the retracted end of the elastic claw is provided with a through hole for engaging the temperature sensor in the direction of the temperature sensor's extension; the outer wall of the expanding end of the elastic claw is fitted with the unlocking sleeve; when the unlocking sleeve moves towards the retracted end, the opening of the expanding end becomes larger, and the opening of the retracted end becomes smaller under the action of the quick-locking spring, thus locking the temperature sensor; conversely, when the unlocking sleeve moves towards the expanding end, the temperature sensor at the retracted end is in a relaxed state; The multi-stage sealing system includes first and second stage sealing rings disposed between the tapered insertion part and the unlocking sleeve, and a third stage sealing structure filled with graphite in the tapered insertion part; The dust protection assembly includes a purge air path and a silicone dust cover; the purge air path introduces compressed air into the outer cavity of the base and flows out from the outlet of the air path to achieve automatic purging of the inside of the device; the silicone dust cover is fitted onto the outer surface of the device.

2. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 1, characterized in that: The elastic claw consists of four lobes, which are identical in shape and symmetrically distributed; the inner wall of the through hole at the contracted end of the elastic claw is provided with an annular groove for fixing a temperature sensor.

3. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 2, characterized in that: The elastic jaws are made of high-strength, high-temperature resistant stainless steel.

4. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 1, characterized in that: The unlocking sleeve includes a sleeve body and a linkage component; the inner wall of the sleeve body is provided with an annular protrusion along the circumferential direction of the claw, and the outer surface of the protrusion slides along the outer side of the expansion end of the elastic claw with a preset stroke; the linkage component is sleeved to the outer wall of the sleeve body to drive the sleeve body to move; the inner side of the linkage component is provided with a limiting device for limiting its movement stroke, and the outer side is provided with a reset spring for fixing the unlocking sleeve along the insertion and removal direction.

5. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 1, characterized in that: The guide cone angle of the tapered insertion part of the quick-connect connector assembly is 15°; the outer shell of the quick-connect connector assembly is a sealed shell, and its surface is treated with high-temperature oxidation.

6. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 1, characterized in that: The unlocking sleeve is a stainless steel unlocking sleeve.

7. The quick-connect self-locking blast furnace temperature sensor installation device according to claim 1, characterized in that: The first and second-level sealing rings are a nickel-based alloy metal sealing ring with a temperature resistance of 800℃ and a fluororubber O-ring with a temperature resistance of 300℃, respectively; wherein the nickel-based alloy metal sealing ring is the main sealing ring and the fluororubber O-ring is the auxiliary sealing ring. The graphite filling the tapered insertion part is high-temperature resistant graphite.

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