A detector probe self-cleaning device

Abstract

The utility model discloses a kind of detector probe self-cleaning device, it is related to detection probe cleaning technical field, and the insulating part is equipped on detector probe, still include purging piece, close piece, first closed part, second closed part, high-pressure gas pump;Purging piece is sleeved on insulating part and is equipped with purging cavity;Close piece is installed in purging piece and is sleeved on insulating part, and close piece is equipped with close cavity;First closed part, second closed part close the both ends of purging piece;Detector probe is sequentially penetrated the center of first closed part, purging cavity, close cavity, second closed part and is gap matched with the center of second closed part and forms air outlet passage;Purging piece covers insulating part on detector probe inside, dust in external flue gas and other pollutants are isolated outside difficult to contact with insulating part;High-pressure gas pump is connected into purging cavity in compressed gas, and compressed gas moves along purging cavity, close cavity, air outlet passage, and insulator surface is cleaned in circumferential omnidirectional purging.

Description

Technical Field

[0001] This utility model relates to the field of detection probe cleaning technology, specifically to a self-cleaning device for a detection instrument probe. Background Technology

[0002] The online leak detector installed on the baghouse dust collector uses a micro-charge dynamic detection and analysis principle. By detecting the amount of micro-charge generated by the collision and friction between particles in the clean air chamber of the baghouse dust collector and the sensor, the content of dust particles in the flue gas is characterized and determined, thereby analyzing and identifying bag leaks and pulse jet valve malfunctions. The micro-charge detection accuracy is high, reaching the picoampere 10⁻¹² (PA) level. The leak detection system uses multiple charge detector sensors (rod-type or cable-type sensors). These sensors need to be installed and inserted into the flue gas to detect dust-containing particles. The sensor probe rod must be insulated from the equipment housing to ensure isolation. Therefore, an insulating section is installed on the sensor to ensure that the sensor probe rod remains insulated from the installation location. However, during production, once the sensor probe is installed in the equipment, the insulation part is inevitably exposed to the equipment's flue gas. Due to the high temperature of the smelting flue gas, as well as dust, moisture, acidic substances, etc., the insulation will be contaminated after a period of use, causing it to be covered with dust and other pollutants. This affects the detection data, leading to inaccurate data and ultimately affecting the accuracy of the entire leaky bag system. Therefore, regular disassembly, cleaning, and maintenance are required, which will also reduce the lifespan of the sensor.

[0003] For contamination of sensor insulation components, manual cleaning is not only inefficient, but also has an impact due to frequent disassembly and reassembly, and it is also difficult to determine the cycle of cleaning contaminants. Utility Model Content

[0004] The main purpose of this invention is to provide a self-cleaning device for a detector probe, which solves the problem that existing charge detector sensors are covered by dust and other contaminants, affecting detection data and making cleaning and maintenance difficult.

[0005] To achieve the above objectives, this utility model provides a self-cleaning device for a detector probe, wherein the detector probe is provided with an insulating component, and further includes:

[0006] A purging component is sleeved on an insulating component and spaced apart from the insulating component to form a purging chamber; the purging component is equipped with a high-pressure air pump that communicates with the purging chamber;

[0007] A closing component is movably installed inside the purging component and sleeved on the insulating component; there is a gap between the closing component and the insulating component to form a closing cavity; the inner diameter of the closing cavity decreases along the axis of the insulating component.

[0008] The first sealing element is located at one end of the purge element and is detachably connected to the detector; a sealing element is provided between the first sealing element and the detector probe to seal the end of the purge chamber near the detector probe.

[0009] The second closure is located at the end of the purge member away from the first closure member to close the end of the purge chamber away from the seal member;

[0010] The probe of the detector passes through the center of the first sealing component, the purge chamber, the constricting chamber, and the second sealing component in sequence, and is fitted with the center gap of the second sealing component to form an air outlet channel; the purge chamber, the constricting chamber, and the air outlet channel are connected in sequence.

[0011] As a further improvement of this utility model, the purging component includes a purging sleeve; the purging sleeve is provided with an air inlet pipe communicating with the purging chamber; the air inlet pipe is located between the first sealing component and the closing component.

[0012] As a further improvement of this utility model, the closing component includes a closing sleeve; the closing sleeve is a hollow conical structure, with the large end of the closing sleeve facing the first sealing component; the inner diameter of the closing cavity is larger than the outer diameter of the detector probe so that there is a gap between the closing cavity and the outer wall of the detector probe for compressed gas to pass through.

[0013] As a further improvement of this utility model, the first sealing member includes a first sealing plate; the first sealing plate is fixedly connected to one end of the purge sleeve and its outer edge extends beyond the purge sleeve; the detector probe is provided with two sets of clamping sleeves; the clamping sleeves are provided with locking members; the locking members drive the two sets of clamping sleeves to move towards each other and clamp on the detector probe under the action of external force; the clamping sleeves are provided with connecting plates; the connecting plates are detachably connected to the first sealing plate.

[0014] As a further improvement of this utility model, the sealing element includes a sealing sleeve disposed on the first sealing plate; the sealing sleeve is interference-fitted with the probe of the detector.

[0015] As a further improvement of this utility model, the second sealing member includes a shrink-fit end cap; the shrink-fit end cap is detachably connected to the purge sleeve; the center of the shrink-fit end cap is coaxial with the center of the sealing sleeve.

[0016] As a further improvement of this utility model, the purge sleeve is also provided with two sets of snap-fit ​​sleeves; the snap-fit ​​sleeves are provided with locking components; the locking components drive the two sets of snap-fit ​​sleeves to move towards each other and snap onto the purge sleeve under the action of external force; the snap-fit ​​sleeves are provided with connecting rings, and the connecting rings are provided with connecting holes.

[0017] As a further improvement of this utility model, a retainer is also provided inside the purge sleeve; the retainer is provided with a centering hole; the centering hole and the axis of the purge sleeve are located on the same straight line; the detector probe passes through the centering hole.

[0018] The beneficial effects of this utility model are reflected in:

[0019] 1. By setting up a purge component to cover the insulating component on the detector probe, and by sealing the purge chamber with the first and second sealing components, the dust and other pollutants in the external flue gas are isolated from the outside and cannot come into contact with the insulating component, thereby reducing the adhesion of dust and other pollutants in the flue gas to the insulating component.

[0020] 2. Compressed gas is introduced into the purging chamber by a high-pressure air pump. The compressed gas moves along the purging chamber, the converging chamber, and the air outlet channel. After passing through the converging chamber, it is collected and pressurized to purge the surface of the insulator. The converging part can purge the insulator in all directions, resulting in better purging effect and cleaning of the insulator. The compressed gas after purging is discharged along the air outlet channel, which can reduce the gap between the port of the purging part and the sensor detection rod. This is conducive to increasing the exhaust air pressure and flow rate of the purging air, which can reduce the amount of contaminants entering the interior of the purging part during use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the connection structure between a self-cleaning device for a detector probe and a rod-type sensor according to the present invention.

[0022] Figure 2 This is a schematic diagram of the connection structure between a self-cleaning device for a detector probe and a cable sensor according to the present invention.

[0023] Figure 3 This is a schematic diagram of the overall structure of a self-cleaning device for a detector probe according to the present invention;

[0024] Figure 4 This is a schematic diagram of the closing component structure of a self-cleaning device for a detector probe according to the present invention;

[0025] Figure 5 This is a schematic diagram of the retaining structure of a self-cleaning device for a detector probe according to the present invention;

[0026] Figure 6 This is a schematic diagram of the parallel connection structure of multiple sets of a self-cleaning device for a detector probe according to the present invention;

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Detector probe; 101. Sensor head; 102. Head wiring port; 103. Sensor housing; 104. Sensor detection rod; 105. Connecting screw; 106. Connecting nut; 107. Cable sensor metal wire; 2. Insulating component; 3. Purge component; 301. Purge sleeve; 4. Closing component; 401. Bottom ring; 402. Conical ring sleeve; 403. Top ring; 5. First sealing component; 501. First sealing plate; 6. Second sealing component; 601. Shrink end cap; 7. Purge chamber; 8. Closing chamber; 9. 10. Sealing element; 11. Air outlet duct; 12. Air inlet duct; 13. Pressure regulating valve; 14. Pressure sensor; 15. Electromagnetic control valve; 16. Fixing screw hole; 17. Fixing stud; 18. Positioning screw hole; 19. Clamping sleeve; 20. Locking element; 21. Connecting plate; 22. Ear plate; 23. Locking screw hole; 24. Through hole; 25. Snap-fit ​​sleeve; 26. Locking element; 27. Connecting ring; 28. Connecting hole; 29. ​​Snap-fit ​​plate; 30. Locking screw hole; 31. Cage; 32. Centering hole; 33. Main pipe; 34. Manual valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0030] See Figure 1 The present invention relates to a self-cleaning device for a detector probe. The detector probe 1 is provided with an insulating component 2, and also includes a blowing component 3, a closing component 4, a first sealing component 5, and a second sealing component 6.

[0031] The purging component 3 is sleeved on the insulating component 2 and spaced apart from the insulating component 2 to form a purging chamber 7. The purging component 3 is equipped with a high-pressure air pump that communicates with the purging chamber 7.

[0032] The closing part 4 is movably installed inside the blowing part 3 and sleeved on the insulating part 2. There is a gap between the closing part 4 and the insulating part 2 to form a closing mouth 8. The inner diameter of the closing mouth 8 decreases along the axis of the insulating part 2.

[0033] The first sealing member 5 is located at one end of the purge member 3 and is detachably connected to the detector. A sealing member 9 is provided between the first sealing member 5 and the detector probe 1 to seal the end of the purge chamber 7 near the detector probe 1.

[0034] The second sealing member 6 is located at the end of the purge member 3 away from the first sealing member 5 to seal the end of the purge chamber 7 away from the sealing member 9;

[0035] The detector probe 1 passes through the center of the first sealing member 5, the purge chamber 7, the constricting cavity 8, and the second sealing member 6 in sequence, and is fitted with the center gap of the second sealing member 6 to form an air outlet channel 10; the purge chamber 7, the constricting cavity 8, and the air outlet channel 10 are connected in sequence.

[0036] In this embodiment, the purging component 3 is provided with an air inlet pipe 11 that is connected to an external high-pressure air pump. The air inlet pipe 11 is provided with a pressure regulating valve 12, a pressure sensor 13, and an electromagnetic control valve 14 in sequence. The high-pressure air pump, the pressure regulating valve 12, the pressure sensor 13, and the electromagnetic control valve 14 are all existing structures. The high-pressure air pump introduces compressed gas into the purging chamber 7 through the air inlet pipe 11. The pressure regulating valve 12 can adjust the pressure of the compressed gas according to the pressure display on the pressure sensor 13, and control the opening and closing of the electromagnetic control valve 14 to control whether the compressed gas enters the purging chamber 7.

[0037] It should be noted that, see Figure 1 , 2 The detector probe 1 includes a rod sensor and a cable sensor. The rod sensor consists of a sensor head 101, a head connection port 102, a sensor housing 103, a sensor insulator 2, and a sensor detection rod 104. The sensor detection rod 104 is a rigid straight rod. The sensor insulator 2 is located between the sensor housing 103 and the sensor detection rod 104. The rod sensor inserts the sensor detection rod 104 into the equipment for detection. The cable sensor is a long metal wire that needs to pass through the equipment or pipe space. The cable sensor consists of a connecting screw 105, a connecting nut 106, a sensor housing 103, a sensor insulator 2, and a cable. The sensor is composed of a cable-type sensor metal wire 107. The cable-type sensor metal wire 107 is made of flexible material. Both ends of the cable-type sensor metal wire 107 are fixed to the two ends of the main equipment wall or the two ends of the pipe wall through an insulating ceramic or insulating component 2. The sensor metal wire is adjusted and tightened by the connecting screw 105 and the connecting nut 106. The insulating component 2 in the two sets of detector probes 1 mentioned above is a key component to ensure the normal operation of the detector probe 1. When the detector probe 1 is installed in the equipment, dust, moisture, acidic substances and other substances in the equipment flue gas are easy to adhere to the outside of the insulating component 2 in the long-term high temperature environment, which affects the detection data and makes cleaning and maintenance difficult.

[0038] In this embodiment, see Figure 1The blower 3 has a hollow interior forming a blower cavity 7. The blower 3 is connected to the detector probe 1 through the first sealing member 5, so that the insulating member 2 on the detector probe 1 is located inside the blower cavity 7. The high-pressure air pump introduces compressed high-speed gas into the blower cavity 7. The compressed gas flows along the blower cavity 7 and the converging mouth 8, peeling off the dust and other objects attached to the insulating member 2 from the insulator and discharging them along the air outlet channel 10. The insulator on the detector probe 1 is wrapped by the blower 3, which can isolate external dust and other objects and reduce the contact between dust and the insulator.

[0039] In this embodiment, see Figure 1 , 4 The converging part 4 is fitted onto the insulating part 2, with a gap between the converging part 4 and the insulating part 2. The inner diameter of the converging part 4 decreases. After the compressed gas enters the converging part 4, the converging mouth 8 guides and gathers the compressed gas towards the outer wall of the insulating part 2. After the compressed gas enters the converging mouth 8, it is further compressed, which can enhance the blowing intensity of the compressed gas on the insulator, allowing dust and other objects to be removed from the insulator. Furthermore, the converging part 4 is arranged around the circumference of the insulator, which can provide all-round blowing on the insulator and improve the cleaning effect.

[0040] In this embodiment, see Figure 1 The first sealing member 5 and the second sealing member 6 respectively seal both ends of the blowing member 3 to prevent dust and other objects from entering the blowing chamber 7 and contacting the insulator. Since the detector probe 1 passes through the first sealing member 5 and the second sealing member 6 in sequence, through holes 23 need to be opened on the first sealing member 5 and the second sealing member 6 for the detector probe 1 to pass through. A sealing member 9 is provided between the first sealing member 5 and the detector probe 1, thereby sealing one end of the blowing member 3 to prevent dust from entering the blowing chamber 7. The through hole 23 opened on the second sealing member 6 allows the detector probe 1 to pass through and forms an air outlet channel 10, so that the compressed gas can carry the dust and other objects peeled off from the insulator and be discharged from the air outlet channel 10. At the same time, the continuously introduced compressed gas can reduce the temperature inside the blowing chamber 7. The compressed gas is continuously discharged from the air outlet channel 10, which can isolate external dust and other objects outside the blowing chamber 7 and prevent dust and other objects from entering the blowing chamber 7 from the air outlet channel 10.

[0041] In summary, after the purging component 3 is fitted onto the detector probe 1, the insulating component 2 on the detector probe 1 is wrapped inside the purging chamber 7. At the same time, the closing component 4 is located inside the purging chamber 7 and fitted onto the insulating component 2. The purging chamber 7, the closing chamber 8, and the air outlet channel 10 are interconnected. After the compressed gas enters the purging chamber 7, the compressed gas moves along the axial direction of the purging component 3 into the closing chamber 8 and is pressurized. After the compressed gas is collected, it acts on the outer wall of the insulating component 2. Since the closing component 4 is located circumferentially around the insulating component 2 and wraps the insulating component 2, the insulating component 2 can be purged from all directions. The compressed gas after purging carries dust and other particles and is discharged from the air outlet channel 10. The purging component 3 wraps the insulator inside, reducing and preventing dust and other particles in the external flue gas from contacting the insulator. While the compressed gas is purging the insulator, it also cools the insulator and is discharged from the air outlet channel 10. The air outlet channel 10 is sealed by the compressed gas to prevent dust in the flue gas from entering the purging chamber 7 from the air outlet channel 10 and contacting the insulator.

[0042] Based on the above embodiments, see Figure 3 The purging component 3 includes a purging sleeve 301. The purging sleeve 301 is provided with an air inlet pipe 11 that communicates with the purging chamber 7. The air inlet pipe 11 is located between the first sealing component 5 and the closing component 4. The purging sleeve 301 is a hollow cylindrical structure. The inner diameter of the purging sleeve 301 is larger than the outer diameter of the insulating component 2, so that there is a gap between the insulating component 2 and the interior of the purging sleeve 301. The length of the purging sleeve 301 must be greater than the length of the insulating component 2 to ensure that the purging sleeve 301 completely wraps the insulating component 2 inside. The internal dimensions of the purging sleeve 301 can be made according to the size of the probe 1 of different detectors. After the air inlet pipe 11 is connected to the high-pressure air pump, the compressed gas in the high-pressure air pump enters the purging chamber 7 between the first sealing component 5 and the closing component 4 through the air inlet pipe, and then flows along the closing mouth 8.

[0043] It should be noted that since the detector probe 1 is equipped with multiple sets, each set of detector probe 1 is fitted with a purge component 3, a closing component 4, a first sealing component 5, and a second sealing component 6. Multiple sets of air inlet pipes 11 can be connected in parallel and then connected to the high-pressure air pump. Each set of air inlet pipes 11 is equipped with a pressure regulating valve 12, a pressure sensor 13, and a solenoid control valve 14. A manual valve 33 is installed between the high-pressure air pump and the multiple sets of parallel air inlet pipes 11 for control.

[0044] Based on the above embodiments, see Figure 1 , 4 The closing component 4 includes a closing sleeve, which is a hollow conical structure. The large end of the closing sleeve faces the first sealing component 5. The inner diameter of the closing mouth 8 is larger than the outer diameter of the detector probe 1 so that there is a gap between the closing mouth 8 and the outer wall of the detector probe 1 for compressed gas to pass through. Specifically, the closing sleeve includes a bottom ring 401 located at the large end, a conical ring 402 located in the middle section, and a top ring 403 located at the small end.

[0045] Preferably, the inner wall of the purge sleeve 301 at the large opening end of the closing sleeve is fitted with a clearance so that the closing sleeve can be placed inside the purge sleeve 301.

[0046] Preferably, the purge sleeve 301 is provided with a fixing screw hole 15, and a fixing stud 16 is provided in the fixing screw hole 15 by thread. The bottom ring 401 of the large end of the closing sleeve is provided with a positioning screw hole 17. The closing sleeve can be fixed in the purge sleeve 301 by connecting the fixing stud 16 with the positioning screw hole 17. By providing fixing screw holes 15 on the upper end face and lower end face of the purge sleeve 301 respectively, and positioning screw holes 17 on the upper end face and lower end face of the bottom ring 401 respectively, and providing two sets of fixing studs 16, after both sets of fixing studs 16 are screwed into the positioning screw holes 17, the position of the closing sleeve in the purge sleeve 301 is determined by the fixing studs 16, keeping the closing sleeve and the purge sleeve 301 coaxially set, so that there is a gap between the closing mouth 8 and the outer wall of the detector probe 1 and they do not come into contact.

[0047] Based on the above embodiments, see Figure 1 , 3 The first sealing member 5 includes a first sealing plate 501, which is fixedly connected to one end of the purge sleeve 301 and extends beyond the purge sleeve 301. The detector probe 1 is provided with two sets of clamping sleeves 18, and the clamping sleeves 18 are provided with locking members 19. Under the action of external force, the locking members 19 drive the two sets of clamping sleeves 18 to move towards each other and clamp them on the detector probe 1. The clamping sleeves 18 are provided with connecting plates 20, which are detachably connected to the first sealing plate 501. The first sealing plate 501 and the purge sleeve 301 can be fixed on the detector probe 1 by connecting the clamping sleeves 18 and the first sealing plate 501 to the clamping sleeves 18 through the connecting plate 20.

[0048] Preferably, the clamping sleeve 18 has a semi-circular ring structure, and the end of the clamping sleeve 18 is provided with an ear plate 21. The ear plate 21 is provided with a locking screw hole 22. The locking component 19 includes a locking screw. Two sets of locking screws are provided. After the two sets of locking screws are connected to the locking screw hole 22, the two sets of clamping sleeves 18 move towards each other and clamp on the detector probe 1.

[0049] It should be further noted that, for rod-type sensors, the clamping sleeve 18 is connected to the sensor housing 103; for cable-type sensors, the clamping sleeve 18 can be clamped onto the connecting nut 106.

[0050] Preferably, the connecting plate 20 has a circular structure, and the connecting plates 20 on the two sets of clamping sleeves 18 form a complete ring. The connecting plate 20 and the first sealing plate 501 are provided with through holes 23. By using bolts to pass through the through holes 23 and connect with nuts, the first sealing plate 501 and the connecting plate 20 can be connected, thereby connecting the purge sleeve 301 and the detector probe 1.

[0051] Based on the above embodiments, the sealing element 9 includes a sealing sleeve disposed on the first sealing plate 501, and the sealing sleeve is interference-fitted with the detector probe 1.

[0052] It should be noted that the sensor housing 103 and sensor detection rod 104 on the detector probe 1 (the sensor metal wire on the basket sensor passes through the first sealing plate 501) have a through hole 23 located in the center of the first sealing plate 501. The sealing sleeve is located inside the through hole 23 on the first sealing plate 501. The sealing sleeve is made of high-temperature resistant graphite material. After the first sealing plate 501 is connected to the connecting ring 26, the connecting ring 26 abuts against the sealing sleeve. After compressed gas is introduced into the purge chamber 7, the sealing sleeve seals the space between the first sealing plate 501 and the detector probe 1, preventing dust in the external flue gas from entering the purge chamber 7 and also preventing compressed gas from escaping from the through hole 23 on the first sealing plate 501.

[0053] Based on the above embodiments, see Figure 1 , 3 The second sealing element 6 includes a shrink head 601, which is detachably connected to the purge sleeve 301. The center of the shrink head 601 is coaxial with the center of the sealing sleeve.

[0054] It should be noted that the shrink end cap 601 is a hollow cylinder with one open end. The shrink end cap 601 has a through hole 23 in the center. The shrink end cap 601 and the purge sleeve 301 are connected by threads. The inner diameter of the through hole 23 on the shrink end cap 601 is larger than the outer diameter of the sensor detection rod 104 (the sensor metal wire on the basket sensor) on the detector probe 1. This creates a gap between the through hole 23 on the hand-sewn end cap and the sensor detection rod 104 (the sensor metal wire on the basket sensor), forming an air outlet channel 10. This reduces the gap between the port of the purge sleeve 301 and the sensor detection rod 104, which is beneficial for increasing the exhaust air pressure and flow rate of the purge air and can reduce the amount of pollutants entering the purge sleeve 301 during use.

[0055] Based on the above embodiments, see Figure 1 , 2 3. To facilitate the connection of the purge sleeve 301 with external equipment, the purge sleeve 301 is also provided with two sets of snap-fit ​​sleeves 24. The snap-fit ​​sleeves 24 are provided with locking elements 25. Under the action of external force, the locking elements 25 drive the two sets of snap-fit ​​sleeves 24 to move towards each other and snap onto the purge sleeve 301. The snap-fit ​​sleeves 24 are provided with connecting rings 26, and the connecting rings 26 are provided with connecting holes 27.

[0056] It should be noted that the snap-fit ​​sleeve 24 is a semi-circular ring, and two sets of snap-fit ​​sleeves 24 can form a complete ring. The snap-fit ​​sleeve 24 is provided with a snap-fit ​​plate 28, and the snap-fit ​​plate 28 is provided with a locking screw hole 29. The locking component 25 includes a locking screw. After the locking screw is threadedly connected to the locking screw hole 29, the two sets of snap-fit ​​sleeves 24 move towards each other and snap into the purge sleeve 301, thereby connecting the connecting ring 26 to the purge sleeve 301. When connecting to external equipment, the external equipment can be connected by passing a bolt through the connecting hole 27. At the same time, since the snap-fit ​​sleeve 24 is a detachable connection, the position of the snap-fit ​​sleeve 24 on the purge sleeve 301 can be moved to adjust the connection position with the external equipment.

[0057] Based on the above embodiments, see Figure 1 , 2 5. To ensure that the sensor detection rod 104 (the sensor metal wire on the basket sensor) on the detector probe 1 is located at the center of the purge chamber 7, the receiving chamber 8, and the air outlet channel 10, a retainer 30 is also provided inside the purge sleeve 301. The retainer 30 is provided with a centering hole 31. The centering hole 31 and the axis of the purge sleeve 301 are on the same straight line. The detector probe 1 passes through the centering hole 31.

[0058] It should be noted that the retainer 30 is a hollow disc-shaped structure. The retainer 30 can be made of durable materials such as PTFE. Multiple retainers 30 can be set and spaced apart in the purge chamber 7. The retainer 30 can also be fixed by the fixing studs 16. The way the retainer 30 is installed in the purge sleeve 301 is the same as the way the closing sleeve is installed in the purge sleeve 301. The retainer 30 controls the sensor detection rod 104 (the sensor metal wire on the basket sensor) on the detector probe 1 to be located in the center of the purge sleeve 301. This ensures that there is a gap between the sensor detection rod 104 (especially the sensor metal wire on the basket sensor) and the inner wall of the air outlet channel 10 on the shrink end cap 601. It is located in the middle of the air outlet channel 10 and will not come into contact with the shrink end cap 601 in the airflow.

[0059] In this application, a purge sleeve 301 is fitted over the outside of the insulating component 2, and the two ends of the purge sleeve 301 are sealed by the first sealing plate 501 and the shrinking end cap 601 to prevent dust in the external flue gas from entering the purge chamber 7 and contacting the insulating component 2. After the compressed gas in the high-pressure air pump enters the purge chamber 7, it flows along the axial direction of the insulating component 2 and is collected and pressurized by the closing sleeve before blowing the outer wall of the insulating component 2. The closing sleeve completely wraps the circumference of the insulating component 2, which can purge the insulating component 2 in all directions. The compressed gas after purging is discharged from the air outlet channel 10, which can cool the insulating component 2 in the purge chamber 7 and block the air outlet channel 10 to prevent dust in the flue gas from entering the purge chamber 7 along the air outlet channel 10. This can reduce the amount of pollutants entering the purge sleeve 301 during use.

[0060] Due to production, see Figure 6 The detector probe 1 is typically set in multiple groups. A purge sleeve 301 is installed on each group of detector probes 1. The air inlet pipe 11 on the purge sleeve 301 is led out and connected in parallel. A main pipe 32 is set up to connect to the air inlet pipe 11 and the high-pressure air pump. A manual valve 33 is installed on the main pipe 32. The purge air is connected to the drying compressed air, which in turn is connected to the treated drying process air. The pressure requirement is 0.1-0.5 MPa. The compressed air system can control multiple detection sensors. The air source is controlled by the valves of the area-treated drying process air duct. Pipe 32 is connected to the equipment area on-site. Then, according to the sensor location, each sensor is connected to a duct containing a manual valve 33, a pressure regulating valve 12, a pressure gauge, a pressure sensor 13, and a solenoid control valve 14. The air pressure and solenoid valve control signals are transmitted to the host computer PLC or DCS system. The purging air is controlled at 0.05-0.01MPa through the pressure regulating valve 12. The solenoid valve is controlled by the PLC or DCS program to realize long-cycle purging or timed purging during production operation, ensuring that the insulating component 2 is in a clean state.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A self-cleaning device for a detector probe, wherein the detector probe (1) is provided with an insulating element (2), characterized in that: Also includes: A purging component (3) is sleeved on an insulating component (2) and spaced apart from the insulating component (2) to form a purging chamber (7); the purging component (3) is provided with a high-pressure air pump that communicates with the purging chamber (7); The closing part (4) is movably installed inside the purging part (3) and sleeved on the insulating part (2); there is a gap between the closing part (4) and the insulating part (2) to form a closing mouth (8); the inner diameter of the closing mouth (8) decreases along the axis of the insulating part (2); The first sealing member (5) is located at one end of the purge member (3) and is detachably connected to the detector; a sealing member (9) is provided between the first sealing member (5) and the detector probe (1) to seal the end of the purge chamber (7) near the detector probe (1); The second closure (6) is located at the end of the purge member (3) away from the first closure (5) to close the end of the purge chamber (7) away from the seal (9); The detector probe (1) passes through the center of the first sealing member (5), the purge chamber (7), the constricting chamber (8), and the second sealing member (6) in sequence, and forms an air outlet channel (10) with the center gap of the second sealing member (6); the purge chamber (7), the constricting chamber (8), and the air outlet channel (10) are connected in sequence.

2. The self-cleaning device for a detector probe according to claim 1, characterized in that: The purging component (3) includes a purging sleeve (301); the purging sleeve (301) is provided with an air inlet pipe (11) that communicates with the purging chamber (7); the air inlet pipe (11) is located between the first sealing component (5) and the closing component (4).

3. The self-cleaning device for a detector probe according to claim 2, characterized in that: The closing component (4) includes a closing sleeve; the closing sleeve is a hollow conical structure, with the large end of the closing sleeve facing the first sealing component (5); the inner diameter of the closing mouth (8) is larger than the outer diameter of the detector probe (1) so that there is a gap between the closing mouth (8) and the outer wall of the detector probe (1) for compressed gas to pass through.

4. The self-cleaning device for a detector probe according to claim 3, characterized in that: The first sealing member (5) includes a first sealing plate (501); the first sealing plate (501) is fixedly connected to one end of the purge sleeve (301) and its outer edge extends beyond the purge sleeve (301); the detector probe (1) is provided with two sets of clamping sleeves (18); the clamping sleeves (18) are provided with locking members (19); the locking members (19) drive the two sets of clamping sleeves (18) to move towards each other and clamp on the detector probe (1) under the action of external force; the clamping sleeves (18) are provided with connecting plates (20); the connecting plates (20) are detachably connected to the first sealing plate (501).

5. The self-cleaning device for a detector probe according to claim 4, characterized in that: The sealing element (9) includes a sealing sleeve disposed on the first sealing plate (501); the sealing sleeve is interference-fitted with the detector probe (1).

6. The self-cleaning device for a detector probe according to claim 5, characterized in that: The second sealing member (6) includes a shrink end cap (601); the shrink end cap (601) is detachably connected to the purge sleeve (301); the center of the shrink end cap (601) is coaxial with the center of the sealing sleeve.

7. The self-cleaning device for a detector probe according to claim 6, characterized in that: The purge sleeve (301) is also provided with two sets of snap-fit ​​sleeves (24); the snap-fit ​​sleeves (24) are provided with locking elements (25); the locking elements (25) drive the two sets of snap-fit ​​sleeves (24) to move towards each other and snap onto the purge sleeve (301) under the action of external force; the snap-fit ​​sleeves (24) are provided with connecting rings (26), and the connecting rings (26) are provided with connecting holes (27).

8. The self-cleaning device for a detector probe according to claim 7, characterized in that: The purge sleeve (301) is also provided with a retainer (30); the retainer (30) is provided with a centering hole (31); the centering hole (31) and the axis of the purge sleeve (301) are on the same straight line; the detector probe (1) is inserted into the centering hole (31).

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