An online detection device for hot forming processing of quartz reactor

Abstract

The present invention relates to the field of optical detection technology, and in particular to an online detection device for hot forming processing of a quartz reactor. The laser detection mechanism in the reactor includes two symmetrically arranged continuous coating devices and a smoke exhaust device, and a protective seat that can move on a power shaft. Both sides of the continuous coating device are fixed with a disk body that is rotatably mounted on the power shaft. The disk body and the frame body are fixedly connected. The quartz reactor to be detected is sleeved between the two disk bodies and rotates thereon. The protective seat is equipped with a first laser rangefinder. The present invention solves the problem that the existing laser detection device cannot continuously detect the inside of the quartz reactor.

Description

Technical Field

[0001] The invention relates to the technical field of optical detection, and in particular to an online detection device for hot forming processing of a quartz reactor. Background Art

[0002] After hot forming, the quartz reactor needs to be monitored in real time by non-contact measuring tools such as laser rangefinders and optical measurement systems to see if the outer diameter, inner diameter and other key dimensions of the reactor meet the design requirements. During the inspection, the laser rangefinder is aimed at the outer wall of the reactor and inserted into the reactor to record the outer diameter data at multiple locations.

[0003] The laser rangefinder calculates the distance by emitting laser pulses and measuring the time or phase difference of the reflected signal. However, due to the transparency and ambient light of the quartz reactor, the laser will be reflected and refracted multiple times, affecting the measurement accuracy. In worse cases, the laser signal will penetrate directly without reflection. Therefore, most existing methods will set up shade curtains or shade plates around the detection area to reduce the interference of ambient light, and use reflective stickers or powders on the outer surface of the reactor to increase the emissivity of the reactor. However, when inspecting the inside of the reactor, it is necessary to apply paint because the internal surface often has textures. Because the temperature inside the reactor is high, most workers spray from the reactor mouth to the inside, which will cause uneven spraying and spraying dead corners. In addition, due to the high internal temperature, the paint will often fail in a short time after spraying and solidifying, making it impossible to continuously detect. Therefore, the existing method can only increase the detection speed, but this aspect reduces the accuracy of the detection. In addition, there is a lot of smoke inside the reactor, which will block the spraying view and block the laser signal. To this end, the present invention proposes an online detection device for hot forming processing of a quartz reactor, aiming to improve the spraying quality of the paint inside the reactor and improve the detection effect of the laser rangefinder for continuous detection in a high temperature and high smoke environment. Summary of the invention

[0004] The purpose of the present invention is to solve the problems existing in the background technology and to provide an online detection device for hot forming processing of a quartz reactor.

[0005] The technical solution of the present invention is: an online detection device for hot forming processing of a quartz reactor, comprising an in-reactor laser detection mechanism and a power shaft installed on a frame, the in-reactor laser detection mechanism comprising two symmetrically arranged continuous coating devices and a smoke exhaust device, and a protective seat movable on the power shaft, both sides of the continuous coating device are fixed with a disc body rotatably mounted on the power shaft, the disc body and the frame body are fixedly connected, the quartz reactor to be detected is sleeved between the two disc bodies and rotates thereon, the protective seat is installed with a first laser rangefinder, and the smoke exhaust device comprises a fan blade and a fan-shaped cam driven by the power shaft;

[0006] The continuous coating device comprises a spray box fixed between two disc bodies, a first piston plate and a second piston plate are arranged in the spray box, a coating chamber is formed between the first piston plate and the spray box, an air chamber is formed between the first piston plate and the second piston plate, a micro-air cylinder is fixed on one side of the spray box located at the smoke exhaust device, the micro-air cylinder comprises a piston rod and an air supply pipe, the air supply pipe is connected to the air chamber, the fan-shaped cam and the piston rod cooperate to enable the micro-air cylinder to supply air, a plurality of nozzles are arranged in the coating chamber, and the continuous coating device also comprises an adjustment device for adjusting the angle of the nozzle;

[0007] The continuous coating device is provided with a pushing assembly, which includes a sloped seat fixed on the second piston plate, and a moving head fixed on the side of the protection seat, the slope of the sloped seat gradually increases along the forward direction of the protection seat, the moving head is in contact with the sloped seat, and the air cavity is provided with an air outlet hole opened on the wall of the spray box, and the air outlet speed of the air outlet hole is less than the air intake speed of the air delivery pipe;

[0008] Both sides of the spray box are fixedly connected to the disc body through fixed ear plates. The adjustment device includes a partition located above the ear plate, a spring is fixed between the partition and the disc body, a connecting rod is fixedly installed on the partition and passes through the paint cavity, and the connecting rod is hinged to the spray head. The adjustment device also includes an adjustment rod fixed on the power shaft, and the rotation of the adjustment rod will push the partition.

[0009] Preferably, the spray head includes a nozzle and a feed pipe located in the paint chamber, the adjustment device also includes a movable groove opened on the wall of the spray box, the spray head is located in the movable groove, and an articulated multi-link is hinged on both sides of the feed pipe and between the movable groove. The adjustment device also includes a high-temperature resistant sealing sleeve fixed on the top of the movable groove, the feed pipe passes through the high-temperature resistant sealing sleeve, and the spray box is provided with a feed pipe connected to the paint chamber.

[0010] Preferably, the two smoke exhaust devices are respectively fixed at the two ends of the continuous coating device, and the smoke exhaust device also includes a gear sleeve fixed on the power shaft, both sides of the gear sleeve are meshed with the first gear, the first gear is meshed with the second gear, the second gear is fixed with a driving shaft, one end of the driving shaft is fixedly installed with the fan blade, and the other end of the driving shaft is fixedly installed with the fan-shaped cam, the smoke exhaust device also includes a high temperature resistant shell fixed between the two spray boxes, the gear sleeve is located in the high temperature resistant shell, the first gear and the second gear are both rotatably installed in the high temperature resistant shell, and the drive shaft passes through the high temperature resistant shell.

[0011] Preferably, a motor is fixedly mounted on the frame, the output end of the motor is fixedly connected to the power shaft, a fixing plate is fixedly mounted on one end of the power shaft, a mounting ring is rotatably mounted on the disk, and the fixing plate and the mounting ring are fixedly connected.

[0012] Preferably, a reciprocating thread is provided on the power shaft, the protective seat thread is installed on the reciprocating thread, a cross bar is fixedly installed between the two sides of the two smoke exhaust devices, the two cross bars respectively penetrate the two sides of the protective seat and are fixedly connected to the high temperature resistant shell, and a ventilation hole is opened on one side of the disk.

[0013] Preferably, two symmetrically arranged external detection devices are installed on the frame, and the external detection device includes an electric slide fixed on the frame, an arc frame is slidably installed on the electric slide, and a plurality of second laser rangefinders are arranged in the arc frame, and the laser detection mechanism in the kettle is located between the two arc frames.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This solution sets up a laser detection mechanism in the reactor. When in use, the quartz reactor to be detected is placed outside the detection mechanism. The continuous coating device can continuously spray the paint on the inner wall of the reactor without material interruption. The paint that fails during spraying will be covered by new paint, which prevents the problem of paint failure due to high temperature after one spraying. The spraying angle can be changed regularly by adjusting the device, realizing multi-angle spraying, thus expanding the range of the nozzle spraying in the reactor, ensuring that each area can be evenly covered with paint, avoiding the occurrence of spraying dead angles, thereby improving the detection effect of the laser rangefinder and providing basic conditions for continuous detection.

[0016] Through the smoke exhaust device arranged on the laser detection mechanism in the reactor, the rotation of the power shaft enables the rotation of the fan blades to generate wind force, so that the smoke in the reactor is discharged outward under the action of the wind, ensuring that the working environment of the first laser rangefinder is not blocked by the smoke, and can reduce the temperature in the reactor, thereby reducing the damage of high temperature to the first laser rangefinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a structural schematic diagram of the laser detection mechanism in the kettle of the present invention;

[0019] Figure 3 It is a partial structural schematic diagram of the laser detection mechanism in the kettle of the present invention;

[0020] Figure 4 It is a structural schematic diagram of the mobilization device of the present invention;

[0021] Figure 5 It is a structural schematic diagram of the nozzle of the present invention;

[0022] Figure 6 It is a schematic diagram of the installation structure of the nozzle of the present invention;

[0023] Figure 7 It is a structural schematic diagram of the smoke exhaust device of the present invention;

[0024] Figure 8 It is a schematic diagram of the structure when the present invention is used.

[0025] Reference numerals: 1, plate; 2, continuous coating device; 3, power shaft; 4, protection seat; 5, first laser rangefinder; 6, external detection device; 7, adjustment device; 8, push assembly; 9, smoke exhaust device; 21, spray box; 22, first piston plate; 23, second piston plate; 24, nozzle; 241, nozzle; 242, feed pipe; 25, micro cylinder; 26, piston rod; 27, air pipe; 28, coating chamber; 29, air chamber; 61, arc frame; 62, second laser rangefinder; 63 , electric slide; 71, partition; 72, adjusting rod; 73, connecting rod; 74, spring; 75, movable groove; 76, high temperature resistant sealing sleeve; 77, articulated multi-link; 81, sloped seat; 82, moving head; 91, gear sleeve; 92, first gear; 93, second gear; 94, driving shaft; 95, fan blade; 96, fan-shaped cam; 97, high temperature resistant shell; 100, reciprocating thread; 200, vent; 300, mounting ring; 400, fixing plate; 500, feed pipe; 600, cross bar. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0027] Refer to the attached Figure 1-Figure 8 , an online detection device for hot forming processing of a quartz reactor, comprising an in-reactor laser detection mechanism and a power shaft 3 installed on a frame, the in-reactor laser detection mechanism comprising two symmetrically arranged continuous coating devices 2 and a smoke exhaust device 9, and a protective seat 4 movable on the power shaft 3, both sides of the continuous coating device 2 are fixed with a disk body 1 rotatably mounted on the power shaft 3, the disk body 1 and the frame are fixedly connected, the quartz reactor to be detected is sleeved between the two disk bodies 1 and rotates thereon, the protective seat 4 is installed with a first laser rangefinder 5, and the smoke exhaust device 9 comprises a fan blade 95 and a fan-shaped cam 96 driven by the power shaft 3;

[0028] The continuous coating device 2 includes a spray box 21 fixed between two discs 1, a first piston plate 22 and a second piston plate 23 are provided in the spray box 21, a coating chamber 28 is formed between the first piston plate 22 and the spray box 21, an air chamber 29 is formed between the first piston plate 22 and the second piston plate 23, the spray box 21 is located on one side of the smoke exhaust device 9 and a micro-cylinder 25 is fixed thereon, the micro-cylinder 25 includes a piston rod 26 and an air pipe 27, the air pipe 27 is connected to the air chamber 29, the fan-shaped cam 96 and the piston rod 26 cooperate to enable the micro-cylinder 25 to supply air, a plurality of nozzles 24 are provided in the coating chamber 28, and the continuous coating device 2 also includes an adjustment device 7 for adjusting the angle of the nozzle 24.

[0029] It should be noted that the continuous coating device 2 is provided with a pushing assembly 8, which includes a sloped seat 81 fixed on the second piston plate 23, and a moving head 82 fixed on the side of the protective seat 4. The slope of the sloped seat 81 gradually increases along the forward direction of the protective seat 4, and the moving head 82 is in contact with the sloped seat 81. The air cavity 29 is provided with an air outlet opened on the wall of the spray box 21, and the air outlet speed of the air outlet is less than the air intake speed of the air pipe 27.

[0030] When the power shaft 3 is driven, the protection seat 4 will be driven to move on the power shaft 3, so that the protection seat 4 will drive the moving head 82 to move and squeeze the slope seat 81, so that the slope seat 81 is squeezed to press the second piston plate 23 downward. At this time, the fan cam 96 will also be driven to rotate through the power shaft 3, and the fan cam 96 will continuously press the piston rod 26, so that the exhaust gas of the micro cylinder 25 is input into the air cavity 29 through the air supply pipe 27. In this way, under the action of the second piston plate 23 pressing down and the air cavity 29 being inflated, the first piston plate 22 presses down the paint in the paint cavity 28, so that the paint will be continuously sprayed from the nozzle 24 into the inside of the quartz reactor.

[0031] The laser rangefinder calculates the distance by emitting laser pulses and measuring the time or phase difference of the reflected signal. By spraying paint inside the quartz reactor, the problem of multiple reflections and refractions of the laser due to the high transparency of the quartz material affecting the measurement accuracy or the laser signal directly penetrating without being emitted is avoided, thereby ensuring the normal use of the laser rangefinder and improving its accuracy.

[0032] The air outlet of the air cavity 29 is provided to ensure that the gas in the air cavity 29 is continuously discharged, thereby preparing for the next operation.

[0033] It should also be noted that both sides of the spray box 21 are fixedly connected to the disc body 1 through fixedly installed ear plates, the adjustment device 7 includes a partition 71 located above the ear plate, a spring 74 is fixed between the partition 71 and the disc body 1, the partition 71 is fixedly installed with a connecting rod 73 that penetrates the paint cavity 28, the connecting rod 73 and the nozzle 24 are hinged, and the adjustment device 7 also includes an adjustment rod 72 fixed on the power shaft 3, and the rotation of the adjustment rod 72 will push the partition 71, and the nozzle 24 includes a nozzle 241 and a feed pipe 242 located in the paint chamber 28, the maneuvering device 7 also includes a movable groove 75 opened on the wall of the spray box 21, the nozzle 24 is located in the movable groove 75, and an articulated multi-link 77 is hinged between the two sides of the feed pipe 242 and the movable groove 75. The maneuvering device 7 also includes a high-temperature resistant sealing sleeve 76 fixed on the top of the movable groove 75, the feed pipe 242 passes through the high-temperature resistant sealing sleeve 76, and the spray box 21 is provided with a delivery pipe 500 connected to the paint chamber 28.

[0034] When the power shaft 3 rotates, it will drive the adjustment rod 72 to rotate, so that the adjustment rod 72 and the partition 71 are in contact, squeezing and pushing the partition 71 to move, so that the spring 74 will be squeezed and contracted. At this time, the spring 74 will pull the connecting rod 73, and the connecting rod 73 will pull the feed pipe 242, so that the nozzle 24 will tilt. At this time, the articulated multi-link 77 will ensure the stability of the nozzle 24 and prevent it from dislocating, so that the spraying direction of the nozzle 241 is changed. As the adjustment rod 72 continues to rotate, the partition 71 will not be in contact with the adjustment rod 72 for a period of time. At this time, the spring 74 will rebound. The partition 71 is returned to its original position, so that the nozzle 24 moves again, so that the nozzle 24 can be continuously swung, and the spraying angle of the feed pipe 242 is continuously changed, realizing multi-angle spraying, thereby expanding the spraying range of the nozzle 24 in the reactor, ensuring that each area can be evenly covered, avoiding the occurrence of spraying dead angles, and the regular change of the spraying angle of the nozzle 24, coupled with the continuous introduction of paint into the nozzle 241, does not cause material interruption, ensuring the uniformity of spraying, and further improving the spraying effect in the reactor.

[0035] It should be noted that the paint needs to be a reflective paint that is resistant to high temperatures and easy to clean.

[0036] In this embodiment, two smoke exhaust devices 9 are respectively fixed at the two ends of the continuous coating device 2, and the smoke exhaust device 9 also includes a gear sleeve 91 fixed on the power shaft 3, both sides of the gear sleeve 91 are meshed with the first gear 92, the first gear 92 is meshed with the second gear 93, the second gear 93 is fixed with a drive shaft 94, one end of the drive shaft 94 is fixedly installed with a fan blade 95, and the other end of the drive shaft 94 is fixedly installed with a fan cam 96. The smoke exhaust device 9 also includes a high temperature resistant shell 97 fixed between the two spray boxes 21, the gear sleeve 91 is located in the high temperature resistant shell 97, the first gear 92 and the second gear 93 are both rotatably installed in the high temperature resistant shell 97, and the drive shaft 94 passes through the high temperature resistant shell 97.

[0037] When the power shaft 3 rotates, the gear sleeve 91 is driven to rotate, so that the gear sleeve 91 rotates to engage the first gear 92 to rotate the second gear 93. The rotation of the second gear 93 rotates the fan blades 95 and the fan cam 96. The rotation of the fan blades 95 can generate wind force, so that the smoke in the reactor is discharged outward under the action of wind, ensuring that the working environment of the first laser rangefinder 5 is not blocked by the smoke, and can reduce the temperature in the reactor, reducing the damage of the first laser rangefinder 5 to the high temperature.

[0038] In addition, if Figure 1 As shown, a motor is fixedly mounted on the frame, the output end of the motor is fixedly connected to the power shaft 3, a fixing plate 400 is fixedly mounted on one end of the power shaft 3, a mounting ring 300 is rotatably mounted on the disk body 1, and the fixing plate 400 and the mounting ring 300 are fixedly connected.

[0039] During operation, the reactor is placed between the two disks 1 on the mounting ring 300. By starting the motor, the power shaft 3 can be driven to rotate, thereby driving the continuous coating device 2 and the smoke exhaust device 9 to operate, and the power shaft 3 can also drive the fixed plate 400 to rotate, so that the mounting ring 300 drives the reactor to rotate. In this way, when spraying paint, the entire body of the reactor can be coated, and as the protective seat 4 continues to move, most areas in the reactor can be detected.

[0040] A reciprocating thread 100 is provided on the power shaft 3, and the protective seat 4 is threadedly installed on the reciprocating thread 100. A cross bar 600 is fixedly installed between the two sides of the two smoke exhaust devices 9. The two cross bars 600 respectively penetrate the two sides of the protective seat 4 and are fixedly connected to the high-temperature resistant shell 97. A ventilation port 200 is opened on one side of the disk body 1.

[0041] When the power shaft 3 rotates, the protection seat 4 will reciprocate on the reciprocating thread 100, thereby driving the first laser rangefinder 5 to move for detection. The setting of the cross bar 600 plays a guiding role on the protection seat 4, ensuring the normal movement of the protection seat 4, and the vent 200 can discharge the smoke out of the kettle.

[0042] like Figure 1 and Figure 7 As shown, two symmetrically arranged external detection devices 6 are installed on the frame, and the external detection device 6 includes an electric slide 63 fixed on the frame, an arc frame 61 is slidably installed on the electric slide 63, and a plurality of second laser rangefinders 62 are arranged in the arc frame 61. The laser detection mechanism in the kettle is located between the two arc frames 61.

[0043] During the specific operation, first, the paint is fed into the paint chamber 28 through the feed pipe 500, and the quartz reactor to be detected is placed between the two disks 1. The two ends of the reactor are located on the mounting ring 300. The laser detection mechanism in the reactor will be located in the reactor, and the two external detection devices 6 will be in the reactor. By starting the electric slide 63 to move the arc frame 61 back and forth, the second laser rangefinder 62 can detect the outer wall of the reactor, and because the paint is sprayed inside the quartz reactor, the light generated by the second laser rangefinder 62 can be refracted.

[0044] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An online detection device for hot forming processing of a quartz reactor, characterized in that: The invention comprises an in-vessel laser detection mechanism and a power shaft (3) mounted on a frame, the in-vessel laser detection mechanism comprising two symmetrically arranged continuous coating devices (2) and a smoke exhaust device (9), and a protective seat (4) movable on the power shaft (3), a disk body (1) rotatably mounted on the power shaft (3) being fixed on both sides of the continuous coating device (2), the disk body (1) and the frame being fixedly connected, a quartz reactor to be detected being sleeved between the two disk bodies (1) and rotating thereon, a first laser rangefinder (5) being mounted on the protective seat (4), and the smoke exhaust device (9) comprising a fan blade (95) and a fan-shaped cam (96) driven by the power shaft (3); The continuous coating device (2) comprises a coating box (21) fixed between two disk bodies (1), a first piston plate (22) and a second piston plate (23) are arranged in the coating box (21), a coating chamber (28) is formed between the first piston plate (22) and the coating box (21), an air chamber (29) is formed between the first piston plate (22) and the second piston plate (23), a micro-air cylinder (25) is fixed on one side of the coating box (21) located on the smoke exhaust device (9), the micro-air cylinder (25) comprises a piston rod (26) and an air supply pipe (27), the air supply pipe (27) and the air chamber (29) are connected, the fan-shaped cam (96) and the piston rod (26) cooperate to enable the micro-air cylinder (25) to supply air, a plurality of nozzles (24) are arranged in the coating chamber (28), and the continuous coating device (2) also comprises an adjustment device (7) for adjusting the angle of the nozzle (24); The continuous coating device (2) is provided with a pushing assembly (8), the pushing assembly (8) includes a sloped seat (81) fixed on the second piston plate (23), and also includes a moving head (82) fixed on the side of the protection seat (4), the slope of the sloped seat (81) gradually increases along the forward direction of the protection seat (4), the moving head (82) and the sloped seat (81) are in contact, and the air cavity (29) is provided with an air outlet hole opened on the wall of the spray box (21), and the air outlet speed of the air outlet hole is less than the air intake speed of the air delivery pipe (27); Both sides of the spray box (21) are fixedly connected to the disk body (1) via fixedly installed ear plates. The adjustment device (7) includes a partition (71) located above the ear plate. A spring (74) is fixed between the partition (71) and the disk body (1). The partition (71) is fixedly installed with a connecting rod (73) that passes through the paint chamber (28). The connecting rod (73) and the spray head (24) are hinged. The adjustment device (7) also includes an adjustment rod (72) fixed on the power shaft (3). The rotation of the adjustment rod (72) will push the partition (71).

2. The online detection device for hot forming processing of a quartz reactor according to claim 1 is characterized in that: The spray head (24) comprises a nozzle (241) and a feed pipe (242) located in the coating chamber (28); the maneuvering device (7) further comprises a movable groove (75) provided on the wall of the spray box (21); the spray head (24) is located in the movable groove (75); an articulated multi-link (77) is hingedly connected between the two sides of the feed pipe (242) and the movable groove (75); the maneuvering device (7) further comprises a high temperature resistant sealing sleeve (76) fixed on the top of the movable groove (75); the feed pipe (242) passes through the high temperature resistant sealing sleeve (76); and the spray box (21) is provided with a feed pipe (500) connected to the coating chamber (28).

3. The online detection device for hot forming processing of a quartz reactor according to claim 1 is characterized in that: The two smoke exhaust devices (9) are respectively fixed at two ends of the continuous coating device (2). The smoke exhaust device (9) further comprises a gear sleeve (91) fixed on the power shaft (3). Both sides of the gear sleeve (91) are meshed with a first gear (92). The first gear (92) is meshed with a second gear (93). The second gear (93) is fixed with a drive shaft (94). One end of the drive shaft (94) is fixedly mounted with the fan blade (95). The other end of the drive shaft (94) is fixedly mounted with the fan-shaped cam (96). The smoke exhaust device (9) further comprises a high temperature resistant shell (97) fixed between the two spray boxes (21). The gear sleeve (91) is located in the high temperature resistant shell (97). The first gear (92) and the second gear (93) are both rotatably mounted in the high temperature resistant shell (97). The drive shaft (94) passes through the high temperature resistant shell (97).

4. The online detection device for hot forming processing of a quartz reactor according to claim 3 is characterized in that: A motor is fixedly mounted on the frame, the output end of the motor is fixedly connected to the power shaft (3), a fixing plate (400) is fixedly mounted on one end of the power shaft (3), a mounting ring (300) is rotatably mounted on the disk body (1), and the fixing plate (400) and the mounting ring (300) are fixedly connected.

5. The online detection device for hot forming processing of a quartz reactor according to claim 4, characterized in that: The power shaft (3) is provided with a reciprocating thread (100), the protective seat (4) is threadedly mounted on the reciprocating thread (100), a cross bar (600) is fixedly mounted between the two sides of the two smoke exhaust devices (9), the two cross bars (600) respectively penetrate the two sides of the protective seat (4) and are fixedly connected to the high temperature resistant shell (97), and a ventilation hole (200) is opened on one side of the disk body (1).

6. The online detection device for hot forming processing of a quartz reactor according to claim 1 is characterized in that: Two external detection devices (6) are symmetrically mounted on the frame, the external detection device (6) comprising an electric slide (63) fixed on the frame, an arc frame (61) is slidably mounted on the electric slide (63), a plurality of second laser rangefinders (62) are arranged in the arc frame (61), and the in-vessel laser detection mechanism is located between the two arc frames (61).

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