CN115097008A

CN115097008A - Online automatic ultrasonic detection device for welding butt seam of vacuum chamber of nuclear fusion reactor

Info

Publication number: CN115097008A
Application number: CN202211029376.6A
Authority: CN
Inventors: 王锐; 范小松; 刘志宏; 吉海标; 马建国; 吴杰峰; 徐朝胜
Original assignee: Hefei Institutes of Physical Science of CAS
Current assignee: Hefei Institutes of Physical Science of CAS
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2022-09-23

Abstract

The invention relates to the field of welding detection, and discloses an online automatic ultrasonic detection device for a welding butt seam of a vacuum chamber of a nuclear fusion reactor. The invention has the beneficial effects that: the detection device is suitable for online detection of welding seams in vacuum chambers of nuclear fusion reactors, and has the advantages of high degree of freedom, simple detection process, convenience in operation and high reliability of detection results.

Description

Online automatic ultrasonic detection device for welding butt seam of vacuum chamber of nuclear fusion reactor

Technical Field

The invention relates to the field of welding detection, in particular to an online automatic ultrasonic detection device for welding butt seams of vacuum chambers of a nuclear fusion reactor.

Background

The fusion reactor vacuum chamber is formed by assembling and welding a plurality of sectors through compensation block groups, and because of the existence of the compensation ring, when two sector groups form a large sector, two narrow-gap D-shaped ring welding seams are formed on the inner shell and the outer shell. The vacuum chamber is of a double-layer structure, welding and nondestructive testing of the welding seam of the outer shell can be completed only by penetrating the assembly gap of the inner shell from the inside of the vacuum chamber in the manufacturing process of the vacuum chamber, and then the welding and nondestructive testing of the inner shell can be implemented. The existing scanning device of the online automatic ultrasonic detection system mainly comprises a chain type scanning device, a wheel type scanning device and a guide rail type scanning device, but the chain type scanning device cannot be used in a large-size vacuum chamber, the wheel type scanning device needs to be adsorbed on a workpiece by using a magnetic wheel, the vacuum chamber is made of austenitic stainless steel, and is not magnetic conductive and cannot be used, the final guide rail type scanning device is mainly applied to detection of large-diameter pipeline welding seams and open spaces, the interlayer gap of a shell of the vacuum chamber is limited, and the final guide rail type scanning device cannot be applied to detection of welding seams of the vacuum chamber. Therefore, a new type of on-line automatic ultrasonic detection device for welding seams in vacuum chambers of nuclear fusion reactors is needed to solve the above problems.

Disclosure of Invention

The utility model aims at providing an online automatic ultrasonic testing device of welding seam in nuclear fusion reactor vacuum chamber, this detection device can be applicable to the welding seam detection in the vacuum chamber of nuclear fusion, more accurate detection weld quality.

The purpose of the application is realized by the following technical scheme:

an online automatic ultrasonic detection device for welding seams in a vacuum chamber of a nuclear fusion reactor comprises: track, dolly, linking arm, executor main part, laser generator, mounting panel, two probe presss from both sides and two ultrasonic transducer, the track is the annular and arranges, dolly slidable mounting in orbital interior week, linking arm fixed mounting in on the dolly, the executor main part install in the tail end of linking arm, laser generator with the mounting panel is all installed in on the lateral wall of executor main part, laser generator's transmission head sets up towards orbital direction, the mounting panel is seted up two waist shape holes that the fore-and-aft direction extends, two the waist shape hole is located respectively the front side and the rear side of mounting panel, two the probe presss from both sides respectively demountable installation in two on the waist shape hole, the probe presss from both sides has two clamping jaws, two the clamping jaw is followed orbital extending direction interval sets up, ultrasonic transducer rotates to be installed in two between the clamping jaw, the detection part of the ultrasonic probe is arranged towards the direction of the track.

In some embodiments of the present application, the support structure further includes a plurality of support seats, and the support seats are disposed at intervals on the periphery of the rail along the extending direction of the rail.

In some embodiments of this application, the dolly includes backup pad and a plurality of action wheel, linking arm fixed mounting in the backup pad, the action wheel rotate install in the backup pad and laminate in the track, just the action wheel is used for connecting in the power take off end of outside motor.

In some embodiments of the present application, the cart further includes a plurality of driven wheels rotatably mounted on the support plate and attached to the rail, and the driven wheels are disposed on two sides of the rail relatively.

In some embodiments of the present application, the actuator further includes a distance sensor mounted on a side wall of the actuator body, and a detection portion of the distance sensor is disposed toward a direction of the rail.

In some embodiments of the present application, the actuator body is provided at a top thereof with a flange plate, and the flange plate is connected to the tail end of the connecting arm by bolts.

In some embodiments of this application, the executor main part includes shell, guide rail and slip table, the shell install in the tail end of linking arm, the shell has the orientation track open-ended accommodation space, slip table fixed mounting in the bottom of shell, the guide rail along the orientation or deviate from orbital direction slidable mounting in on the slip table, laser generator install in on the lateral wall of shell, the mounting panel install in on the guide rail.

In some embodiments of the present application, the actuator body further includes a constant force spring, the constant force spring is installed in the accommodating space, and the guide rail is abutted to the constant force spring.

In some embodiments of this application, the probe clamp includes connecting plate and clamping part, the connecting plate demountable installation in waist shape hole is last, the clamping jaw is located on the clamping part, the clamping part has the spacing groove, the connecting plate rotate connect in the spacing groove, the spacing groove with inject between the connecting plate and form the regulation clearance.

In some embodiments of the present application, the probe clip and the ultrasound probe are connected by a pin.

The utility model provides an online automatic ultrasonic detection device of nuclear fusion reactor vacuum chamber butt weld, it moves at the inboard of nuclear fusion vacuum chamber to drive parts such as linking arm, executor main part through the removal on the track of dolly, the executor main part is installed at the tail end of linking arm as the carrier, the transmitting head of laser generator is towards orbital direction and aim at the welding seam central line, whether for real-time observation detection route takes place the deviation, the mounting panel is as the carrier of probe clamp, be equipped with waist shape hole on it, make the relative position of two probe clamps adjustable, and then control the distance of ultrasonic probe forward edge apart from the welding seam central line, ultrasonic probe rotates and installs between two clamping jaws of probe clamp, make ultrasonic probe can keep the degree of freedom of a direction of rotation, be convenient for adjust ultrasonic probe's detection position, whole welding seam ultrasonic detection device can be used in nuclear fusion vacuum chamber, the degree of freedom is high, and the testing process is simple, convenient operation, and the testing result reliability is high.

Drawings

FIG. 1 is a schematic view of the overall structure of the ultrasonic weld inspection device of the present application;

FIG. 2 is a front view of the ultrasonic weld inspection device of the present application;

FIG. 3 is a schematic view of the overall structure of the cart portion of the present application in a first orientation;

FIG. 4 is a schematic view of the overall structure of the cart portion of the present application in a second orientation;

FIG. 5 is a schematic view of the overall construction of the actuator body portion of the present application;

FIG. 6 is a rear elevational view of the actuator body part of the present application;

FIG. 7 is a side view of an actuator body part of the present application;

FIG. 8 is a cross-sectional view of section A-A of FIG. 7;

fig. 9 is an enlarged view of a portion B in fig. 7.

In the figure, 1, track; 2. a trolley; 21. a support plate; 22. a driving wheel; 23. a driven wheel; 3. a connecting arm; 4. an actuator body; 41. a flange plate; 42. a housing; 43. a guide rail; 44. a sliding table; 45. an accommodating space; 46. a constant force spring; 5. a laser generator; 6. mounting a plate; 61. a waist-shaped hole; 7. a probe clip; 71. a clamping jaw; 72. a connecting plate; 73. a clamping portion; 74. a limiting groove; 75. adjusting the clearance; 8. an ultrasonic probe; 9. a supporting base; 10. a distance sensor.

Detailed Description

The following detailed description of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present application, it should be understood that the terms "upper", "lower", "top", "bottom", and the like used in the present application indicate orientations or positional relationships based on those shown in the drawings, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 to 8, an embodiment of the present application provides an online automatic ultrasonic detection apparatus for a weld joint formed in a vacuum chamber of a nuclear fusion reactor, including: track 1, dolly 2, linking arm 3, executor main part 4, laser generator 5, mounting panel 6, two probe presss from both sides 7 and two ultrasonic transducer 8, track 1 is the annular and arranges, 2 slidable mounting of dolly in track 1's internal week, 3 fixed mounting of linking arm in on dolly 2, executor main part 4 install in the tail end of linking arm 3, laser generator 5 with mounting panel 6 all install in on the lateral wall of executor main part 4, the transmission head of laser generator 5 sets up towards the direction of track 1, mounting panel 6 is seted up two waist shape holes 61 that the fore-and-aft direction extends, two waist shape holes 61 are located respectively the front side and the rear side of mounting panel 6, two probe presss from both sides 7 demountable installation respectively in two on waist shape hole 61, probe presss from both sides 7 has two clamping jaws 71, the two clamping jaws 71 are arranged at intervals along the extending direction of the track 1, the ultrasonic probe 8 is rotatably installed between the two clamping jaws 71, and the detection part of the ultrasonic probe 8 faces the direction of the track 1.

Based on the technical scheme, the connecting arm 3 is driven by the movement of the trolley 2 on the track 1, the actuator body 4 and other components move on the inner side of the nuclear fusion vacuum chamber, the actuator body 4 is installed at the tail end of the connecting arm 3 as a carrier, the emission head of the laser generator 5 faces the direction of the track 1 and is aligned to the central line of a weld joint, the deviation of a detection route is observed in real time, the mounting plate 6 is used as the carrier of the probe clamp 7, the waist-shaped hole 61 is formed in the mounting plate, the relative position of the two probe clamps 7 can be adjusted, the distance between the front edge of the ultrasonic probe 8 and the central line of the weld joint is further controlled, the ultrasonic probe 8 is rotatably installed between the two clamping jaws 71 of the probe clamp 7, the freedom degree of the ultrasonic probe 8 in one rotating direction can be kept, and the detection position of the ultrasonic probe 8 can be conveniently adjusted. When the device is used, firstly, the track 1 is installed on the inner peripheral wall of a nuclear fusion vacuum chamber, then the trolley 2 is placed on the track 1, the trolley 2 is remotely operated to a specified position by using the console, the fixing is stopped, the connecting arm 3 is remotely controlled by using the console to move, the ultrasonic probe 8 is fixed at a proper position, and then an ultrasonic host is used for synchronously acquiring detection signals to form detection data. The rail 1 is made of carbon steel, and is directly bent according to the D-shaped structure of the vacuum chamber, so that the rail is low in price and convenient to manufacture. The connecting arm 3 preferably has a plurality of arms that are connected together to facilitate changing the position of the actuator body 4 for ease of operation. The ultrasonic probe 8 adopts a single-emitting-receiving bicrystal area array phased array ultrasonic probe 8, the length of the ultrasonic probe is preferably 45mm, the requirement of a scanning space of a 50mm welding seam of a nuclear fusion vacuum chamber is met, the frequency is selected from 2.5MHz longitudinal waves, and the wedge angle at the front end of the ultrasonic probe 8 is preferably 20.73 degrees.

In some embodiments of the present application, as shown in fig. 1 and 2, the support structure further includes a plurality of support seats 9, and the plurality of support seats 9 are disposed at intervals on the outer periphery of the rail 1 along the extending direction of the rail 1. The supporting seat 9 is connected with the inner wall of the vacuum chamber in a spot welding mode, the effect of the fixed track 1 is better, the supporting seat 9 is preferably made of stainless steel, and the supporting seat and the vacuum chamber are made of the same materials and can be welded better.

In some embodiments of the present application, as shown in fig. 3 and 4, the cart 2 includes a supporting plate 21 and a plurality of driving wheels 22, the connecting arm 3 is fixedly installed on the supporting plate 21, the driving wheels 22 are rotatably installed on the supporting plate 21 and attached to the track 1, and the driving wheels 22 are used for connecting to the power output end of an external motor. The connecting arm 3 is preferably connected with the mounting plate 6 by a fastener, so that the mounting and dismounting are convenient, and the motor is connected with the driving wheel 22 to rotate, so that the support plate 21 and the connecting arm 3 mounted on the support plate 21 are driven to move on the track 1. Preferably, the number of the driving wheels 22 is four, and two driving wheels are oppositely arranged on the track 1.

Specifically, as shown in fig. 3 and 4, the trolley 2 further includes a plurality of driven wheels 23, the driven wheels 23 are rotatably mounted on the support plate 21 and attached to the track 1, and the driven wheels 23 are oppositely disposed on two sides of the track 1. The preferred quantity of driven wheel 23 is 8, and two liang of relative settings are in track 1's both sides, and two driven wheels 23 are tight track 1 clamp, play limiting displacement, prevent that dolly 2 from jolting when moving.

In some embodiments of the present application, as shown in fig. 5 and 7, the present application further includes a distance sensor 10, the distance sensor 10 is mounted on a side wall of the actuator body 4, and a detection portion of the distance sensor 10 is disposed toward the direction of the rail 1. The distance sensor 10 can be used to display the distance of the ultrasonic probe 8 from the detection surface in real time, thereby remotely guiding the operation of the mechanical arm.

In some embodiments of the present application, as shown in fig. 5 to 8, the actuator body 4 is provided with a flange 41 at the top, and the flange 41 is connected to the rear end of the connecting arm 3 by bolts. The actuator body 4 is arranged on the connecting arm 3 in a bolt and flange plate 41 mode, so that the mounting effect is good, and the disassembly is convenient.

In some embodiments of the present application, as shown in fig. 5 to 8, the actuator main body 4 includes a housing 42, a guide rail 43 and a sliding table 44, the housing 42 is installed at the tail end of the connecting arm 3, the housing 42 has a facing space 45 for accommodating the opening of the track 1, the sliding table 44 is fixedly installed at the bottom of the housing 42, the guide rail 43 is installed on the sliding table 44 along a direction towards or away from the track 1, the laser generator 5 is installed on the outer side wall of the housing 42, and the installation plate 6 is installed on the guide rail 43. Accommodation space 45 in the shell 42 can be used to accommodate partial guide rail 43 structure, prevents that executor main part 4 overlength, and guide rail 43 cooperation slip table 44 can adjust the length that guide rail 43 exposes accommodation space 45 to nimble different size requirement of adaptation, and preferred interval is equipped with a plurality of mounting holes on the guide rail 43, and on the different mounting holes of accessible adjustment mounting panel 6 installation, the position of adjusting mounting panel 6, the suitability is good.

Specifically, as shown in fig. 1 and 2, the actuator body 4 further includes a constant force spring 46, the constant force spring 46 is installed in the accommodating space 45, and the guide rail 43 abuts against the constant force spring 46. The constant force spring 46 is used for ensuring that the ultrasonic probe 8 contacts the workpiece with constant force, and preventing the detection accuracy of the ultrasonic probe 8 from being influenced by the unevenness of the surface of the workpiece.

In some embodiments of the present application, as shown in fig. 5, 7 and 9, the probe clamp 7 includes a connecting plate 72 and a clamping portion 73, the connecting plate 72 is detachably mounted on the kidney-shaped hole 61, the clamping jaw 71 is located on the clamping portion 73, the clamping portion 73 has a limiting groove 74, the connecting plate 72 is rotatably connected in the limiting groove 74, and an adjusting gap 75 is defined between the limiting groove 74 and the connecting plate 72. The structure of the connecting plate 72 and the limiting groove 74 is not completely matched, the width of the limiting groove 74 is slightly larger than that of the connecting plate 72, the structure arrangement enables an adjusting gap 75 to be formed between the limiting groove 74 and the connecting plate 72, the probe clamp 7 can rotate relative to the connecting plate 72, but due to the relation of the limiting groove 74, the rotating angle cannot be too large, the probe clamp 7 can obtain a certain degree of freedom of rotation, and the detection position can be adjusted when needed.

In some embodiments of the present application, as shown in fig. 5 and 6, the probe clip 7 and the ultrasonic probe 8 are connected by a pin. The probe clamp 7 and the ultrasonic probe 8 are provided with corresponding mounting holes, and the mounting holes on the probe clamp 7 and the ultrasonic probe 8 are connected through a pin shaft, so that the ultrasonic probe 8 can keep the degree of freedom in the rotating direction, and the detection position can be adjusted.

In conclusion, the on-line automatic ultrasonic detection device for welding seams in the vacuum chamber of the nuclear fusion reactor, the components such as the connecting arm 3, the actuator body 4 and the like are driven to move on the inner side of the nuclear fusion vacuum chamber by the movement of the trolley 2 on the track 1, the actuator body 4 is used as a carrier and is arranged at the tail end of the connecting arm 3, the emission head of the laser generator 5 faces the direction of the track 1 and is aligned with the central line of a welding seam, used for observing whether the detection route has deviation in real time, the mounting plate 6 is used as a carrier of the probe clamp 7, the waist-shaped hole 61 is formed in the ultrasonic probe clamp, so that the relative positions of the two probe clamps 7 can be adjusted, the distance between the front edge of the ultrasonic probe 8 and the center line of a weld joint is further controlled, the ultrasonic probe 8 is rotatably arranged between the two clamping jaws 71 of the probe clamps 7, the ultrasonic probe 8 can keep the degree of freedom in one rotating direction, and the detection position of the ultrasonic probe 8 can be conveniently adjusted.

The foregoing is only a preferred embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present application, and these modifications and substitutions should also be regarded as the protection scope of the present application.

Claims

1. An online automatic ultrasonic detection device for welding seams in vacuum chambers of nuclear fusion reactors is characterized by comprising: track, dolly, linking arm, executor main part, laser generator, mounting panel, two probe presss from both sides and two ultrasonic transducer, the track is the annular and arranges, dolly slidable mounting in orbital interior week, linking arm fixed mounting in on the dolly, the executor main part install in the tail end of linking arm, laser generator with the mounting panel is all installed in on the lateral wall of executor main part, laser generator's transmission head sets up towards orbital direction, the mounting panel is seted up two waist shape holes that the fore-and-aft direction extends, two the waist shape hole is located respectively the front side and the rear side of mounting panel, two the probe presss from both sides respectively demountable installation in two on the waist shape hole, the probe presss from both sides has two clamping jaws, two the clamping jaw is followed orbital extending direction interval sets up, ultrasonic transducer rotates to be installed in two between the clamping jaw, the detection part of the ultrasonic probe is arranged towards the direction of the track.

2. The device for online automatic ultrasonic detection of welding seams in a vacuum chamber of a nuclear fusion reactor as claimed in claim 1, further comprising a plurality of supporting seats, wherein the plurality of supporting seats are arranged on the periphery of the rail at intervals along the extending direction of the rail.

3. The on-line automatic ultrasonic detection device for welding seams in a nuclear fusion reactor vacuum chamber as recited in claim 1, wherein the trolley comprises a support plate and a plurality of driving wheels, the connecting arm is fixedly mounted on the support plate, the driving wheels are rotatably mounted on the support plate and attached to the rail, and the driving wheels are used for being connected to a power output end of an external motor.

4. An online automatic ultrasonic detection device for a weld joint formed by welding of a vacuum chamber of a nuclear fusion reactor as recited in claim 3, wherein said trolley further comprises a plurality of driven wheels, said driven wheels are rotatably mounted on said support plate and attached to said rail, and said driven wheels are oppositely disposed on both sides of said rail.

5. The device for online automatic ultrasonic detection of welding seams in a nuclear fusion reactor vacuum chamber as recited in claim 1, further comprising a distance sensor mounted on a side wall of the actuator body, wherein a detection portion of the distance sensor is disposed toward the direction of the rail.

6. The device for the on-line automatic ultrasonic detection of the weld joint in the vacuum chamber of the nuclear fusion reactor as claimed in claim 1, wherein a flange is arranged at the top of the actuator body and connected to the tail end of the connecting arm through a bolt.

7. The on-line automatic ultrasonic detection device for welding seams in nuclear fusion reactor vacuum chambers as claimed in claim 1, wherein the actuator body comprises a housing, a guide rail and a sliding table, the housing is installed at the tail end of the connecting arm, the housing has an orientation accommodating space with an opening in the track, the sliding table is fixedly installed at the bottom of the housing, the guide rail faces or deviates from the direction of the track, the direction of the track is slidably installed on the sliding table, the laser generator is installed on the outer side wall of the housing, and the installation plate is installed on the guide rail.

8. The device of claim 7, wherein the actuator body further comprises a constant force spring, the constant force spring is mounted in the accommodating space, and the guide rail abuts against the constant force spring.

9. The on-line automatic ultrasonic detection device for welding seams in a nuclear fusion reactor vacuum chamber according to claim 1, wherein the probe clamp comprises a connecting plate and a clamping portion, the connecting plate is detachably mounted on the kidney-shaped hole, the clamping jaw is located on the clamping portion, the clamping portion is provided with a limiting groove, the connecting plate is rotatably connected in the limiting groove, and an adjusting gap is defined between the limiting groove and the connecting plate.

10. The on-line automatic ultrasonic detection device for welding seams of vacuum chambers of nuclear fusion reactors according to claim 1, wherein the probe clamp and the ultrasonic probe are connected through a pin.