A packing seal cleaning device

Abstract

The present application belongs to the technical field of sealing maintenance equipment, and particularly relates to a packing seal cleaning device, aiming to solve the problem that the force angle and intensity are difficult to be accurately controlled by manual operation, and rigid tools cannot be adapted to narrow dead angle structure, resulting in that the sealing surface of the inner wall of the packing gland is easily scratched or scraped. The present application comprises a laser generating structure and a cooling spraying structure; the laser generating structure is used for projecting laser to the sealing residue to heat the sealing residue. The packing seal cleaning device provided by the present application sprays the gradually cooled gas to the area where the sealing residue is located while the laser generating structure heats the sealing residue, so that the area where the sealing residue is adhered is controlled to shrink while the sealing residue is expanded by heat, and then the reverse extrusion effect of thermal expansion and cold contraction is utilized to generate a peeling stress between the sealing residue and the adhered area, so that the sealing residue and the adhered area are separated.

Description

Technical Field

[0001] This invention belongs to the technical field of sealing maintenance equipment, and specifically relates to a packing seal cleaning device. Background Technology

[0002] The gasifier slag inlet stuffing box is the core sealing component in the slag inlet area at the bottom of the gasifier. It is used to accommodate sealing packing and construct a dynamic sealing structure to block the high-temperature and high-pressure molten slag and reaction gases inside the furnace, prevent the medium from leaking out, and thus ensure the airtightness and operational safety of the gasifier pressure system.

[0003] During long-term operation, the stuffing box is continuously exposed to extreme conditions such as high temperature, high pressure, slag erosion, corrosive atmosphere and particulate matter erosion. Under high temperature conditions, the sealing packing undergoes carbonization and hardening, while slag particles and reaction products form a physical adhesion layer on its surface and chemically sinter with the sealing packing, eventually forming a hardened residual layer firmly attached to the inner wall.

[0004] To meet the requirements of high-precision sealing, the internal structure of the stuffing box includes multiple corners, bushing gaps, and narrow dead corners. Due to the small space in the dead corner area, conventional cleaning tools cannot reach it, resulting in a large accumulation of hardened residue in the dead corner area, which is difficult to remove completely.

[0005] Currently, the cleaning of stuffing box seal residue mainly relies on manual mechanical scraping with rigid tools such as hooks and scrapers. Because manual operation makes it difficult to accurately control the angle and force of application, and rigid tools cannot be adapted to narrow dead angle structures, the sealing surface of the stuffing box inner wall is easily scratched or damaged. After the sealing surface is damaged, it cannot effectively fit with new packing, resulting in the loss of overall sealing performance, which seriously threatens the operational stability and safety of the gasifier. Summary of the Invention

[0006] To address the aforementioned problems in the prior art, namely the difficulty in precisely controlling the angle and force of application during manual operation, and the inability of rigid tools to adapt to narrow dead angle structures, which leads to the easy scratching or damage of the sealing surface of the stuffing box inner wall, this invention provides a stuffing seal cleaning device.

[0007] The system includes a laser generating structure and a cooling jet structure. The laser generating structure projects a laser beam onto a sealing residue to heat it. The cooling jet structure has a compression mode and a thermal shock mode. In the compression mode, the cooling jet structure is configured to inject a gradually cooling gas into the area where the sealing residue is located while the laser generating structure heats it, so that the area to which the sealing residue adheres contracts in a controlled manner while the sealing residue expands due to heat. In the thermal shock mode, the cooling jet structure is configured to inject a quenching gas into the area where the sealing residue is located after the laser generating structure has finished heating it, so that the sealing residue undergoes thermal shock rupture. The temperature of the quenching gas is lower than the temperature of the gradually cooling gas.

[0008] Furthermore, it also includes a gas supply structure; the laser generating structure includes a focusing output head; the cooling jet structure includes a positioning sleeve and a coaxial flow guide; the focusing output head is inserted into one end of the positioning sleeve; the gas supply structure is connected to the end of the positioning sleeve away from the focusing output head, and is used to supply the gradually cooling gas or the rapidly cooling gas to the positioning sleeve; the surface of the positioning sleeve is provided with multiple transition holes; the coaxial flow guide is fitted onto the positioning sleeve, and is used to guide the gradually cooling gas or the rapidly cooling gas discharged through the transition holes, so that its flow direction is coaxial with the laser output from the focusing output head.

[0009] Furthermore, the gas supply structure includes a gas supply tee, a gradual cooling switch valve, and a rapid cooling switch valve; the gas supply tee is connected to the end of the positioning sleeve away from the focusing output head; one end of the gradual cooling switch valve is connected to the gas supply tee, and the other end is connected to the gradual cooling gas supply passage to control the gradual cooling gas entering the positioning sleeve; one end of the rapid cooling switch valve is connected to the gas supply tee, and the other end is connected to the rapid cooling gas supply passage to control the rapid cooling gas entering the positioning sleeve; wherein, both the gradual cooling gas supply passage and the rapid cooling gas supply passage are connected to a high-pressure protection gas source.

[0010] Furthermore, the gas supply structure also includes a gradual cooling pressure regulating valve and a rapid cooling pressure regulating valve; the gradual cooling pressure regulating valve is connected in series in the gradual cooling gas supply passage and is located between the high-pressure protective gas source and the gradual cooling switch valve, and is used to regulate the protective gas pressure output from the high-pressure protective gas source to the gradual cooling switch valve, so that the protective gas forms the gradually cooling gas after throttling expansion; the rapid cooling pressure regulating valve is connected in series in the rapid cooling gas supply passage and is located between the high-pressure protective gas source and the rapid cooling switch valve, and is used to regulate the protective gas pressure output from the high-pressure protective gas source to the rapid cooling switch valve, so that the protective gas forms the rapid cooling gas after throttling expansion; wherein, the protective gas is configured to suppress combustion.

[0011] Furthermore, it also includes a directional guidance structure; the laser generating structure also includes an energy transmission fiber; The directional guidance structure includes a three-way handle, a metal shaping tube, and a coaxial sealing sleeve. The three-way handle has a first port, a second port, and a third port, wherein the first port is connected to the gas supply three-way valve, the second port is connected to the metal shaping tube, and the third port is coaxially arranged with the second port. The end of the metal shaping tube away from the second port is connected to the positioning sleeve, and is used to adjust and fix the deflection angle of the output end of the focusing output head by its own shape, and to deliver protective gas sequentially through the three-way handle and the metal shaping tube to the positioning sleeve. The coaxial sealing sleeve is inserted into the third port and fitted onto the energy transmission optical fiber. The energy transmission optical fiber passes sequentially through the coaxial sealing sleeve, the three-way handle, and the metal shaping tube, and is connected to the input end of the focusing output head.

[0012] Furthermore, it also includes a support structure; the support structure includes a spherical bearing, a support base, and an electromagnet; one end of the spherical bearing is connected to the coaxial guide shroud, and the other end is inserted into the support base; the electromagnet is connected to the support base and is used to support and fix the cooling spray structure to the surface of the workpiece to be cleaned by magnetic attraction.

[0013] Furthermore, it also includes multiple traction structures; each traction structure includes a traction rope; multiple traction ropes are connected to the positioning sleeve and are arranged in a circumferential array around the axis of the positioning sleeve to assist in adjusting the orientation of the cooling spray structure.

[0014] Furthermore, the traction structure also includes a damping bracket and a clamping damping sleeve; the damping bracket is connected to the three-way grip; the clamping damping sleeve is inserted into the damping bracket and abuts against the traction rope to apply damping stress to the traction rope.

[0015] Furthermore, it also includes a guide camera; the guide camera is connected to the coaxial shroud, and its field of view covers the laser output direction of the focusing output head, used to guide the focusing output head to align and move to the sealing residue.

[0016] Furthermore, it also includes a temperature sensor; the temperature sensor is obliquely mounted on the coaxial shroud for measuring the temperature of the sealing residue; the guide camera is obliquely arranged so that the center line of the field of view of the guide camera, the detection center line of the temperature sensor, and the center line of the laser beam output by the focusing output head intersect at the same point, so as to guide the temperature sensor to align with the sealing residue.

[0017] The beneficial effects of this invention are: The device includes a laser generating structure and a cooling jet structure. The laser generating structure projects a laser beam onto the sealing residue to heat it. The cooling jet structure has a compression mode and a thermal shock mode. In the compression mode, the cooling jet structure is configured to inject gradually cooling gas into the area where the sealing residue is located while the laser generating structure heats it, so that the area to which the sealing residue adheres contracts in a controlled manner as the sealing residue expands due to heat. In the thermal shock mode, the cooling jet structure is configured to inject rapidly cooling gas into the area where the sealing residue is located after the laser generating structure has finished heating it, so that the sealing residue will rupture due to thermal shock. The temperature of the rapidly cooling gas is lower than that of the gradually cooling gas.

[0018] When the packing seal cleaning device provided by the present invention is in use, the cooling spray structure heats the seal residue in the laser generating structure while spraying gradually cooling gas into the area where the seal residue is located. This causes the seal residue to expand when heated, while the area it adheres to contracts in a controlled manner. Then, by utilizing the reverse compression effect of thermal expansion and contraction, peeling stress is generated between the seal residue and the adhered area, thereby separating the seal residue from the adhered area.

[0019] After the laser generating structure heats the sealing residue, the cooling jet structure sprays a quenching gas with a temperature lower than that of the gradually cooling gas into the area where the sealing residue is located. This utilizes the thermal shock effect generated by the temperature difference between the sealing residue and the quenching gas to rapidly cool the high-temperature sealing residue, thereby creating thermal stress within the sealing residue, which in turn causes the sealing residue to brittlely fracture or disintegrate.

[0020] The extrusion mode and thermal shock mode are operated in sequence to remove the sealing residues adhering to the inner wall without hard contact with the stuffing box, thereby avoiding damage to the sealing surface of the inner wall of the stuffing box during the cleaning process.

[0021] In addition, by injecting gradually cooling gas into the area where the seal residue is heated, the area where the seal residue is located is kept at a low temperature, thereby avoiding damage to the inside of the stuffing box during the heating process. At the same time, the gradually cooling gas can replace the ambient gas in the area where the seal residue is located, so as to prevent the seal residue from igniting the gas inside the stuffing box during the heating process, thereby improving the safety of the operation. Attached Figure Description

[0022] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the packing seal cleaning device provided in an embodiment of the present invention; Figure 2 This is a front view of the packing seal cleaning device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the combined structure of the cooling spray structure, the directional guiding structure, and the traction structure provided in the embodiments of the present invention; Figure 4 This is a three-dimensional exploded view of the cooling spray structure provided in the embodiment of the present invention; Figure 5 This is a schematic diagram of the gas supply structure provided in an embodiment of the present invention; Figure 6 This is an exploded three-dimensional structural diagram of the support structure provided in the embodiments of the present invention; Figure 7 This is a schematic diagram of the traction structure provided in an embodiment of the present invention.

[0023] icon: 100. Laser generating structure; 110. Focusing output head; 120. Energy transmission fiber; 200. Cooling jet structure; 210. Positioning sleeve; 220. Coaxial guide shroud; 300. Gas supply structure; 310. Gas supply tee; 320. Gradual cooling switch valve; 330. Sudden cooling switch valve; 340. Gradual cooling pressure regulating valve; 350. Sudden cooling pressure regulating valve; 400. Directional guiding structure; 410. T-shaped handle; 420. Metal shaping tube; 430. Coaxial sealing sleeve; 500. Support structure; 510. Spherical bearing; 520. Support base; 530. Electromagnet; 600. Traction structure; 610. Traction rope; 620. Damping bracket; 630. Clamping damping sleeve; 700. Guiding camera; 800. Temperature sensor. Detailed Implementation

[0024] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] The present invention provides a packing seal cleaning device, including a laser generating structure 100 and a cooling spray structure 200.

[0027] The following combination Figures 1-7 The structure and shape of the packing seal cleaning device are described in detail: The laser generating structure 100 projects a laser beam onto the sealing residue to heat it. The cooling jet structure 200 has a compression mode and a thermal shock mode. In the compression mode, the cooling jet structure 200 is configured to inject a gradually cooling gas into the area where the sealing residue is located while the laser generating structure 100 heats it, so that the area to which the sealing residue is adhered contracts in a controlled manner while the sealing residue expands due to heat. In the thermal shock mode, the cooling jet structure 200 is configured to inject a quenching gas into the area where the sealing residue is located after the laser generating structure 100 has finished heating it, so that the sealing residue will rupture due to thermal shock. The temperature of the quenching gas is lower than that of the gradually cooling gas.

[0028] In this embodiment, while the laser generating structure 100 heats the sealing residue, the cooling spray structure 200 sprays gradually cooling gas into the area where the sealing residue is located, so that while the sealing residue expands due to heat, the area it adheres to is controlled to shrink. Then, by utilizing the reverse compression effect of thermal expansion and contraction, peeling stress is generated between the sealing residue and the adhered area, thereby separating the sealing residue from the adhered area.

[0029] After the laser generating structure 100 heats the sealing residue, the cooling jet structure 200 sprays a quenching gas with a temperature lower than that of the gradually cooling gas into the area where the sealing residue is located. This utilizes the thermal shock effect generated by the temperature difference between the sealing residue and the quenching gas to rapidly cool the sealing residue at high temperature, thereby creating thermal stress within the sealing residue, which causes the sealing residue to brittlely crack or disintegrate.

[0030] The extrusion mode and thermal shock mode are operated in sequence to remove the sealing residues adhering to the inner wall without hard contact with the stuffing box, thereby avoiding damage to the sealing surface of the inner wall of the stuffing box during the cleaning process.

[0031] In addition, by injecting gradually cooling gas into the area where the seal residue is heated, the area where the seal residue is located is kept at a low temperature, thereby avoiding damage to the inside of the stuffing box during the heating process. At the same time, the gradually cooling gas can replace the ambient gas in the area where the seal residue is located, so as to prevent the seal residue from igniting the gas inside the stuffing box during the heating process, thereby improving the safety of the operation.

[0032] To ensure that the gradually cooling gas and the quenching gas can cover the area where the seal remains: like Figure 2 and Figure 4As shown, it also includes a gas supply structure 300; a laser generating structure 100 including a focusing output head 110; a cooling jet structure 200 including a positioning sleeve 210 and a coaxial flow guide 220; the focusing output head 110 is inserted into one end of the positioning sleeve 210; the gas supply structure 300 is connected to the end of the positioning sleeve 210 away from the focusing output head 110, and is used to supply gradually cooling gas or rapidly cooling gas to the positioning sleeve 210; the surface of the positioning sleeve 210 is provided with multiple transition holes; the coaxial flow guide 220 is fitted onto the positioning sleeve 210, and is used to guide the gradually cooling gas or rapidly cooling gas discharged through the transition holes, so that its flow direction is coaxial with the laser output from the focusing output head 110.

[0033] In this embodiment, the gas supply structure 300 injects gradually cooling gas or rapidly cooling gas into the positioning sleeve 210. The gradually cooling gas or rapidly cooling gas in the positioning sleeve 210 enters the coaxial flow guide hood 220 through the adapter hole. The coaxial flow guide hood 220 guides the output direction of the gradually cooling gas or rapidly cooling gas to be coaxial with the laser output from the focusing output head 110, so as to ensure that the gradually cooling gas or rapidly cooling gas accurately acts on the laser heating area, thereby ensuring the targeted matching of thermal effect and cooling effect.

[0034] In addition, the gradually cooled gas or rapidly cooled gas output from the coaxial shroud 220 flows through the focusing output head 110. During this process, the gradually cooled gas or rapidly cooled gas exchanges heat with the focusing output head 110, thereby assisting the focusing output head 110 in heat dissipation.

[0035] To ensure the effectiveness of the thermal shock effect on the sealing residue: like Figure 5 As shown, the gas supply structure 300 includes a gas supply tee 310, a gradual cooling switch valve 320, and a rapid cooling switch valve 330. The gas supply tee 310 is connected to the end of the positioning sleeve 210 away from the focusing output head 110. One end of the gradual cooling switch valve 320 is connected to the gas supply tee 310, and the other end is connected to the gradual cooling gas supply passage to control the gradual cooling gas entering the positioning sleeve 210. One end of the rapid cooling switch valve 330 is connected to the gas supply tee 310, and the other end is connected to the rapid cooling gas supply passage to control the rapid cooling gas entering the positioning sleeve 210. Both the gradual cooling gas supply passage and the rapid cooling gas supply passage are connected to the high-pressure protection gas source.

[0036] In this embodiment, when the focusing output head 110 completes the heating of the sealing residue, the gradual cooling switch valve 320 closes while the rapid cooling switch valve 330 controls the rapid cooling passage to connect with the gas supply tee 310, so that the rapid cooling gas supply passage delivers rapid cooling gas into the gas supply tee 310, thereby reducing the delay of rapid cooling gas injection and avoiding the loss of heat from the sealing residue caused by the lag in the switching between the gradual cooling gas and the rapid cooling gas, so as to maximize the thermal shock effect generated by the rapid cooling gas, thereby ensuring that the sealing residue is fully broken under the action of thermal shock.

[0037] To further improve safety during the heating process for sealing residue: like Figure 5 As shown, the gas supply structure 300 also includes a gradual cooling pressure regulating valve 340 and a rapid cooling pressure regulating valve 350; the gradual cooling pressure regulating valve 340 is connected in series in the gradual cooling gas supply passage and is located between the high-pressure protective gas source and the gradual cooling switch valve 320, and is used to regulate the protective gas pressure output from the high-pressure protective gas source to the gradual cooling switch valve 320 so that the protective gas forms a gradually cooling gas after throttling expansion; the rapid cooling pressure regulating valve 350 is connected in series in the rapid cooling gas supply passage and is located between the high-pressure protective gas source and the rapid cooling switch valve 330, and is used to regulate the protective gas pressure output from the high-pressure protective gas source to the rapid cooling switch valve 330 so that the protective gas forms a rapid cooling gas after throttling expansion; wherein, the protective gas is configured to suppress combustion.

[0038] In this embodiment, when it is necessary to generate gradually cooling gas at different temperatures, the gradually cooling pressure regulating valve 340 is adjusted according to the temperature of the gradually cooling gas to change the pressure of the protective gas entering the gradually cooling switch valve 320. The protective gas passes through the gradually cooling pressure regulating valve 340, the gradually cooling switch valve 320, the positioning sleeve 210 and the adapter hole in sequence, enters the coaxial guide shroud 220 and is discharged. The volume of the discharged protective gas expands to form low-temperature gradually cooling gas.

[0039] When it is necessary to generate quenched gases at different temperatures, the quenching pressure regulating valve 350 is adjusted according to the quenching gas temperature to change the pressure of the protective gas entering the quenching switching valve 330. The protective gas passes through the quenching pressure regulating valve 350, the quenching switching valve 330, the positioning sleeve 210 and the adapter hole in sequence into the coaxial guide shroud 220 and is discharged. The volume of the discharged protective gas expands to form low-temperature quenched gas.

[0040] In addition, by configuring the protective gas to suppress combustion, the type of which includes, but is not limited to, carbon dioxide, an isolation layer is formed on the laser path output by the focusing output head 110. This isolation layer separates the laser path and sealing residue from the gas inside the stuffing box to prevent deflagration of the gas inside the stuffing box.

[0041] In order to drive the focusing output head 110 to move to the area where the sealing residue is located and align it with the sealing residue: like Figures 2-3As shown, it also includes a directional guidance structure 400; the laser generating structure 100 also includes an energy transmission fiber 120; the directional guidance structure 400 includes a three-way handle 410, a metal shaping tube 420, and a coaxial sealing sleeve 430; the three-way handle 410 has a first port, a second port, and a third port, wherein the first port is connected to the air supply three-way 310, the second port is connected to the metal shaping tube 420, and the third port is coaxially arranged with the second port; the metal shaping tube 420 is located away from the second port. The end is connected to the positioning sleeve 210, which is used to adjust and fix the deflection angle of the output end of the focusing output head 110 by its own shape, and to deliver the protective gas to the positioning sleeve 210 in sequence through the three-way handle 410 and the metal shaping tube 420; the coaxial sealing sleeve 430 is inserted into the third port and fitted into the power transmission fiber 120; the power transmission fiber 120 passes through the coaxial sealing sleeve 430, the three-way handle 410 and the metal shaping tube 420 in sequence, and is connected to the input end of the focusing output head 110.

[0042] In this embodiment, the focusing output head 110 is driven to move toward the sealing residue by the three-way handle 410, the metal shaping tube 420, and the cooling spray structure 200. When it is necessary to adjust the deflection angle of the focusing output head 110, the three-way handle 410 and the metal shaping tube 420 drive the cooling spray structure 200 or the focusing output head 110 to contact the inner wall of the stuffing box, so that the metal shaping tube 420 deforms and is fixed, thereby adjusting the deflection angle of the focusing output head 110. This allows the focusing output head 110 to move to the area where the sealing residue is located within the complex stuffing box, and the output end of the focusing output head 110 is rotated toward the sealing residue.

[0043] In addition, by passing the power transmission fiber 120 sequentially through the coaxial sealing sleeve 430, the three-way handle 410 and the metal shaping tube 420 and connecting it to the input end of the focusing output head 110, the power transmission fiber 120 inserted into the stuffing box is wrapped in the metal shaping tube 420 and deforms synchronously with the metal shaping tube 420, thereby preventing the power transmission fiber 120 from being damaged or broken during movement.

[0044] To avoid significant vibration of the laser output from the focusing head 110 during the heating process: like Figure 1 and Figure 6 As shown, it also includes a support structure 500; the support structure 500 includes a spherical bearing 510, a support base 520 and an electromagnet 530; one end of the spherical bearing 510 is connected to the coaxial guide shroud 220 and the other end is inserted into the support base 520; the electromagnet 530 is connected to the support base 520 and is used to support and fix the cooling spray structure 200 to the surface of the workpiece to be cleaned by magnetic adsorption.

[0045] In this embodiment, the directional guide structure 400 drives the support structure 500 to move to the area where the sealing residue is located, and then drives the magnetic end of the electromagnet 530 to fit against the inner wall of the stuffing box. Then, the electromagnet 530 is fixed to the inner wall of the stuffing box by magnetic attraction. Then, under the constraint of the spherical bearing 510, the directional guide structure 400 drives the output end of the focusing output head 110 to align with the sealing residue, so that the focusing output head 110 obtains a fulcrum during the heating process, thereby avoiding large jitter of the laser output by the focusing output head 110 during the heating process.

[0046] To assist in adjusting the deflection direction and angle of the focusing output head 110: like Figure 3 and Figure 7 As shown, it also includes multiple traction structures 600; each traction structure 600 includes a traction rope 610; multiple traction ropes 610 are all connected to the positioning sleeve 210 and are arranged in a circumferential array around the axis of the positioning sleeve 210 to assist in adjusting the orientation of the cooling spray structure 200.

[0047] In this embodiment, when it is necessary to adjust the deflection direction and angle of the focusing output head 110, one or more corresponding traction ropes 610 are selected according to the deflection direction and angle of the focusing output head 110. Then, the traction ropes 610 drive the metal shaping tube 420 to deform, thereby assisting in adjusting the deflection direction and angle of the focusing output head 110.

[0048] To maintain the stability of the heating posture of the focusing output head 110: like Figure 7 As shown, the traction structure 600 also includes a damping bracket 620 and a clamping damping sleeve 630; the damping bracket 620 is connected to the three-way handle 410; the clamping damping sleeve 630 is inserted into the damping bracket 620 and abuts against the traction rope 610, for applying damping stress to the traction rope 610.

[0049] In this embodiment, the traction rope 610 moves along the clamping damping sleeve 630 to adjust the deflection direction and angle of the focusing output head 110. After the deflection direction and angle of the focusing output head 110 are adjusted, the clamping damping sleeve 630 applies damping stress to the traction rope 610 to lock the length and position of the traction rope 610, thereby preventing the focusing output head 110 from displacing and maintaining the stability of the heating posture of the focusing output head 110.

[0050] In order to guide the focusing output head 110 to move towards and align with the area where the seal residue is located: like Figures 1-2 As shown, it also includes a guide camera 700; the guide camera 700 is connected to the coaxial shroud 220 and its field of view covers the laser output direction of the focusing output head 110, and is used to guide the focusing output head 110 to be aligned and moved to the sealing residue.

[0051] In this embodiment, by connecting the guide camera 700 to the coaxial flow guide 220 and having its field of view cover the laser output direction of the focusing output head 110, the operator can adjust the deflection direction and angle of the focusing output head 110 according to the image transmitted by the guide camera 700, thereby guiding the focusing output head 110 to move towards the area where the sealing residue is located and align it with the sealing residue.

[0052] In order to precisely control the heating temperature of the seal residue and to promptly control the switching between extrusion mode and thermal shock mode of the cooling jet structure 200: like Figures 1-2 As shown, it also includes a temperature sensor 800; the temperature sensor 800 is obliquely mounted on the coaxial shroud 220 for measuring the temperature of the sealing residue; the guide camera 700 is obliquely arranged so that the center line of the field of view of the guide camera 700, the detection center line of the temperature sensor 800 and the center line of the laser beam output by the focusing output head 110 intersect at the same point, so as to guide the temperature sensor 800 to align with the sealing residue.

[0053] In this embodiment, when the output end of the focusing output head 110 is aligned with the sealing residue, the focusing output head 110 outputs a low-power guiding laser. Then, the center line of the field of view of the guiding camera 700 and the guiding laser are both adjusted to be aligned with the sealing residue. Since the center line of the field of view of the guiding camera 700, the detection center line of the temperature sensor 800 and the center line of the laser beam output by the focusing output head 110 intersect at the same point, the temperature measuring end of the temperature sensor 800 is aligned with the sealing residue.

[0054] When the focusing output head 110 heats the seal residue, the temperature sensor 800 detects the temperature of the seal residue in real time to accurately control the heating temperature of the seal residue; when the temperature of the seal residue reaches the set threshold, the focusing output head 110 stops outputting laser and promptly controls the cooling jet structure 200 to switch from extrusion mode to thermal shock mode.

[0055] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent in such process, method, article, or apparatus / device.

[0056] The technical solution of the present invention has been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of the present invention is obviously not limited to these specific embodiments. Without departing from the principles of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of the present invention.

Claims

1. A packing seal cleaning device, characterized in that: It includes a laser generating structure (100) and a cooling jet structure (200). The laser generating structure (100) is used to project a laser onto the sealing residue to heat the sealing residue; The cooling jet structure (200) has both extrusion and thermal shock modes; In the extrusion mode, the cooling jet structure (200) is configured to spray gradually cooling gas into the area where the sealing residue is located while the laser generating structure (100) heats the sealing residue, so that the area to which the sealing residue is adhered is controlled to shrink while the sealing residue expands due to heat. In the thermal shock mode, the cooling jet structure (200) is configured to spray quench gas into the area where the sealing residue is located after the laser generating structure (100) has finished heating the sealing residue, so as to cause the sealing residue to rupture due to thermal shock. The temperature of the rapidly cooled gas is lower than the temperature of the gradually cooled gas.

2. The packing seal cleaning device according to claim 1, characterized in that: It also includes the gas supply structure (300); The laser generating structure (100) includes a focusing output head (110). The cooling spray structure (200) includes a positioning sleeve (210) and a coaxial guide shield (220). The focusing output head (110) is inserted into one end of the positioning sleeve (210); The gas supply structure (300) is connected to the end of the positioning sleeve (210) away from the focusing output head (110) and is used to supply the gradually cooling gas or the rapidly cooling gas to the positioning sleeve (210). The surface of the positioning sleeve (210) is provided with multiple transition holes; The coaxial flow guide (220) is fitted onto the positioning sleeve (210) to guide the gradually cooling gas or the rapidly cooling gas discharged through the adapter hole, so that it flows coaxially with the laser output from the focusing output head (110).

3. The packing seal cleaning device according to claim 2, characterized in that: The gas supply structure (300) includes a gas supply tee (310), a gradual cooling switch valve (320), and a rapid cooling switch valve (330). The air supply tee (310) is connected to the end of the positioning sleeve (210) away from the focusing output head (110); One end of the gradually cooling switch valve (320) is connected to the gas supply tee (310), and the other end is connected to the gradually cooling gas supply passage to control the gradually cooling gas to enter the positioning sleeve (210). One end of the quenching switch valve (330) is connected to the gas supply tee (310), and the other end is connected to the quenching gas supply passage to control the quenching gas to enter the positioning sleeve (210). Both the gradual cooling gas supply path and the rapid cooling gas supply path are connected to the high-pressure protection gas source.

4. The packing seal cleaning device according to claim 3, characterized in that: The gas supply structure (300) also includes a gradual cooling pressure regulating valve (340) and a rapid cooling pressure regulating valve (350). The gradually cooling pressure regulating valve (340) is connected in series in the gradually cooling gas supply passage and is located between the high-pressure protection gas source and the gradually cooling switch valve (320). It is used to regulate the protection gas pressure output from the high-pressure protection gas source to the gradually cooling switch valve (320) so that the protection gas is expanded by throttling to form the gradually cooling gas. The quenching pressure regulating valve (350) is connected in series in the quenching gas supply passage and is located between the high-pressure protection gas source and the quenching switch valve (330). It is used to regulate the protection gas pressure output from the high-pressure protection gas source to the quenching switch valve (330) so that the protection gas is expanded by throttling to form the quenching gas. The protective gas is configured to suppress combustion.

5. The packing seal cleaning device according to claim 4, characterized in that: It also includes a directional guidance structure (400); The laser generating structure (100) also includes an energy transmission fiber (120). The directional guide structure (400) includes a three-way handle (410), a metal shaping tube (420), and a coaxial sealing sleeve (430). The three-way handle (410) has a first port, a second port and a third port, wherein the first port is connected to the air supply tee (310), the second port is connected to the metal shaping tube (420), and the third port is coaxially arranged with the second port; The end of the metal shaping tube (420) away from the second port is connected to the positioning sleeve (210) and is used to adjust and fix the deflection angle of the output end of the focusing output head (110) by its own shape, and to deliver the protective gas to the positioning sleeve (210) in sequence through the three-way handle (410) and the metal shaping tube (420). The coaxial sealing sleeve (430) is inserted into the third port and fitted onto the power transmission optical fiber (120). The power transmission fiber (120) passes through the coaxial sealing sleeve (430), the three-way grip (410) and the metal shaping tube (420) in sequence, and is then connected to the input end of the focusing output head (110).

6. The packing seal cleaning device according to claim 5, characterized in that: It also includes a supporting structure (500); The support structure (500) includes a spherical bearing (510), a support base (520), and an electromagnet (530). One end of the spherical bearing (510) is connected to the coaxial flow guide (220), and the other end is inserted into the support base (520). The electromagnet (530) is connected to the support base (520) and is used to support and fix the cooling spray structure (200) to the surface of the workpiece to be cleaned by magnetic attraction.

7. The packing seal cleaning device according to claim 6, characterized in that: It also includes multiple traction structures (600); The traction structure (600) includes a traction rope (610); Multiple traction ropes (610) are connected to the positioning sleeve (210) and arranged in a circumferential array around the axis of the positioning sleeve (210) to assist in adjusting the orientation of the cooling spray structure (200).

8. The packing seal cleaning device according to claim 7, characterized in that: The traction structure (600) also includes a damping bracket (620) and a clamping damping sleeve (630). The damping bracket (620) is connected to the three-way grip (410). The clamping damping sleeve (630) is inserted into the damping bracket (620) and abuts against the traction rope (610) to apply damping stress to the traction rope (610).

9. The packing seal cleaning device according to claim 8, characterized in that: It also includes a guide camera (700); The guide camera (700) is connected to the coaxial shroud (220), and its field of view covers the laser output direction of the focusing output head (110), which is used to guide the focusing output head (110) to align and move to the sealing residue.

10. The packing seal cleaning device according to claim 9, characterized in that: It also includes a temperature sensor (800); The temperature sensor (800) is mounted at an angle on the coaxial flow guide (220) for measuring the temperature of the seal residue; The guide camera (700) is tilted so that the center line of the field of view of the guide camera (700), the detection center line of the temperature sensor (800) and the center line of the laser beam output by the focusing output head (110) intersect at the same point, so as to guide the temperature sensor (800) to align with the sealing residue.

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