CN216309872U - Automatic nuclear power station pipeline scanning device - Google Patents
Automatic nuclear power station pipeline scanning device Download PDFInfo
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- CN216309872U CN216309872U CN202122023868.1U CN202122023868U CN216309872U CN 216309872 U CN216309872 U CN 216309872U CN 202122023868 U CN202122023868 U CN 202122023868U CN 216309872 U CN216309872 U CN 216309872U
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Abstract
The utility model belongs to the technical field of special tools for nuclear power stations, and particularly relates to an automatic pipeline scanning device for a nuclear power station. The automatic nuclear power station pipeline scanner comprises a driving assembly, a bracket, a chain wheel and a probe for detecting a welding seam of a nuclear power station pipeline; the driving assembly comprises a circumferential driving piece and an axial connecting piece connected with the circumferential driving piece, the bracket is installed on the axial connecting piece, and the probe is installed on the bracket; the relative both ends of sprocket are installed respectively on the circumference driving piece, just the sprocket winding is on the nuclear power station pipeline, the circumference driving piece is used for the drive the axial connecting piece with the sprocket is around the circumferential direction of nuclear power station pipeline. According to the automatic scanning device for the nuclear power station pipeline, automatic scanning of the nuclear power station pipeline welding line can be achieved, and the detection efficiency and the detection precision of the nuclear power station pipeline welding line are improved.
Description
Technical Field
The utility model belongs to the technical field of special tools for nuclear power stations, and particularly relates to an automatic pipeline scanning device for a nuclear power station.
Background
The pipelines are widely applied to nuclear power plants, two adjacent pipelines are usually connected by adopting a welding method, and cracks are easy to appear at the welding positions of the pipelines, so that the nuclear power plants usually adopt a nondestructive testing method to detect whether the pipelines have cracks.
In the prior art, nondestructive testing of nuclear power plant pipelines is generally performed by holding a probe by an operator. However, some nuclear power plant pipelines are installed in high activity areas and narrow areas, which are not suitable for operators to operate or present a greater safety risk; therefore, the method for detecting the welding seam of the nuclear power plant pipeline by the handheld probe has the problem of great limitation.
SUMMERY OF THE UTILITY MODEL
The utility model provides an automatic scanner for a nuclear power station pipeline, aiming at the technical problem that the detection method of a welding line of the nuclear power station pipeline by a handheld probe in the prior art has larger limitation.
In view of the above technical problems, an embodiment of the present invention provides an automatic scanner for a nuclear power plant pipeline, including a driving assembly, a bracket, a sprocket, and a probe for detecting a weld of the nuclear power plant pipeline; the driving assembly comprises a circumferential driving piece and an axial connecting piece connected with the circumferential driving piece, the bracket is installed on the axial connecting piece, and the probe is installed on the bracket; the relative both ends of sprocket are installed respectively on the circumference driving piece, just the sprocket winding is on the nuclear power station pipeline, the circumference driving piece is used for the drive the axial connecting piece with the sprocket is around the circumferential direction of nuclear power station pipeline.
Optionally, the sprocket comprises a plurality of sprocket blocks, each of which comprises a connecting arm, a connecting shaft and a roller; two adjacent linking arms pass through the connecting axle rotates the connection, the gyro wheel is installed on the connecting axle.
Optionally, the sprocket further comprises a locking member for pressing the roller against the nuclear power plant pipeline, wherein the two connecting arms are respectively connected to two opposite ends of the locking member.
Optionally, the axial connecting member includes a connecting rod, the circumferential driving member is provided with a mounting ring, and the connecting member is mounted on the circumferential driving member through the mounting ring;
the connecting rod is provided with a sliding groove, and the support is connected in the sliding groove in a sliding manner.
Optionally, the axial connector includes an axial driving member for driving the probe to move axially along the pipeline of the nuclear power plant, the axial driving member is installed on the circumferential driving member, and the bracket is installed at an output end of the circumferential driving member.
Optionally, the axial driving piece comprises an axial motor, a screw rod and a mounting nut, the screw rod is connected to the output end of the axial motor, the mounting nut is in threaded connection with the screw rod, and the support is mounted on the mounting nut.
Optionally, the axial connecting piece further comprises a guide rail connected with the circumferential driving piece, a sliding groove is formed in the mounting nut, and the mounting nut is slidably mounted on the guide rail through the sliding groove.
Optionally, the automatic nuclear power plant pipeline scanner is an encoder for detecting whether the probe rotates around the nuclear power plant pipeline for a circle, and the encoder is installed on the axial connecting piece.
Optionally, the stent comprises a resilient member and a stent body mounted on the circumferential drive member, the probe being mounted on the stent body by the resilient member.
Optionally, the probe comprises a phased array probe and/or an ultrasound probe.
In the embodiment of the utility model, two opposite ends of the chain wheel are respectively arranged on the circumferential driving piece, the chain wheel is wound on the nuclear power station pipeline, and the circumferential driving piece is used for driving the axial connecting piece and the chain wheel to rotate around the circumference of the nuclear power station pipeline; when the circumferential driving piece rotates on the outer wall of the nuclear power station pipeline, the circumferential driving piece drives the belt head to rotate around the nuclear power station pipeline through the axial connecting piece, so that the probe can scan the welding seam of the nuclear power station pipeline, the automatic scanning device for the nuclear power station pipeline can realize the automatic scanning work of the welding seam of the nuclear power station pipeline, and the detection efficiency and the detection precision of the welding seam of the nuclear power station pipeline are improved. In addition, the circumferential driving piece is matched with the chain wheel, so that the automatic nuclear power station pipeline scanning device is firmly fixed on the outer wall of a nuclear power station pipeline, the error of the automatic nuclear power station pipeline scanning device rotating around the axial direction of the nuclear power station pipeline is ensured to be within 0.5 degree, the accuracy of the probe detection structure is improved, and the repeatability of the automatic nuclear power station pipeline scanning device is more reliable.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic structural diagram of an automatic pipeline scanner for a nuclear power plant according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of an automatic pipeline scanner for a nuclear power plant according to a second embodiment of the present invention.
The reference numerals in the specification are as follows:
1. a drive assembly; 11. a circumferential drive member; 111. a mounting ring; 12. an axial connector; 121. a connecting rod; 1211. a sliding groove; 122. an axial drive member; 1221. an axial motor; 1222. a screw rod; 1223. mounting a nut; 13. a guide rail; 2. a support; 3. a sprocket; 31. a sprocket block; 311. a connecting arm; 312. a connecting shaft; 313. a roller; 32. a locking member; 4. a probe; 5. an encoder.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
It is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", "middle", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing and simplifying the present invention, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
As shown in fig. 1 and 2, an automatic scanner for nuclear power plant pipes according to an embodiment of the present invention includes a driving assembly 1, a bracket 2, a sprocket 3, and a probe 4 for detecting a weld of a nuclear power plant pipe; the driving assembly 1 comprises a circumferential driving piece 11 and an axial connecting piece 12 connected with the circumferential driving piece 11, the bracket 2 is arranged on the axial connecting piece 12, and the probe 4 is arranged on the bracket 2; it is understood that the probe 4 includes, but is not limited to, a phased array probe 4 and an ultrasonic probe 4, and the probe 4 can realize the nondestructive detection of the nuclear power station pipeline welding seam; the axial connection element 12 can be fixedly connected to the housing of the circumferential drive element 11, and the carrier 2 is fixedly mounted on the axial connection element 12.
The relative both ends of sprocket 3 are installed respectively on the circumference driving piece 11, just sprocket 3 twines on the nuclear power station pipeline, circumference driving piece 11 is used for the drive axial connecting piece 12 with sprocket 3 is around the circumferential direction of nuclear power station pipeline. It will be appreciated that the sprocket 3 is a chain-like structure which can be wound around nuclear power plant pipes.
Specifically, the circumferential driving part 11 comprises a driving trolley and a magnetic wheel arranged on the driving trolley, after the driving trolley is powered on, the magnetic wheel can be tightly adsorbed on a nuclear power station pipeline, the driving trolley drives the magnetic wheel to rotate, the technical effect that the axial connecting part 12 and the chain wheel 3 are driven to rotate circumferentially around the nuclear power station pipeline is achieved, and then the probe 4 on the support 2 can perform full-circle scanning on a welding seam of the nuclear power station pipeline. In addition, after the driving trolley is electrified, the magnetic wheel has a self-locking function, so that the driving trolley can be left at any position on the outer wall of the nuclear power station pipeline; when the driving trolley is powered off, the driving trolley can be manually driven to rotate around the circumferential direction of the nuclear power station pipeline, so that the automatic nuclear power station pipeline scanner has the functions of manual scanning and automatic scanning. Further, the minimum step of the driving trolley is 0.1mm, so that the rotation precision of the driving trolley around the nuclear power station pipeline can reach 0.01 mm.
In the embodiment of the utility model, two opposite ends of the chain wheel 3 are respectively installed on the circumferential driving piece 11, the chain wheel 3 is wound on a nuclear power station pipeline, and the circumferential driving piece 11 is used for driving the axial connecting piece 12 and the chain wheel 3 to rotate around the circumference of the nuclear power station pipeline; when the circumferential driving piece 11 rotates on the outer wall of the nuclear power station pipeline, the circumferential driving piece 11 drives the belt head to rotate around the nuclear power station pipeline through the axial connecting piece 12, so that the probe 4 can scan the welding seam of the nuclear power station pipeline, the automatic scanning device for the nuclear power station pipeline can realize the automatic scanning work of the welding seam of the nuclear power station pipeline, and the detection efficiency and the detection precision of the welding seam of the nuclear power station pipeline are improved. In addition, the circumferential driving piece 11 is matched with the chain wheel 3, so that the automatic nuclear power station pipeline scanning device is firmly fixed on the outer wall of a nuclear power station pipeline, the error of the automatic nuclear power station pipeline scanning device rotating around the axial direction of the nuclear power station pipeline is ensured to be within 0.5 degree, the accuracy of the detection structure of the probe 4 is improved, and the repeatability of the automatic nuclear power station pipeline scanning device is more reliable.
In an embodiment, as shown in fig. 1 and 2, the sprocket 3 comprises a plurality of sprocket blocks 31, each sprocket block 31 comprises a connecting arm 311, a connecting shaft 312 and a roller 313; two adjacent connecting arms 311 are rotatably connected through the connecting shaft 312, and the roller 313 is mounted on the connecting shaft 312. Specifically, the two outermost connecting arms 311 are respectively rotatably connected to two opposite sides of the circumferential driving member 11, the rollers 313 are mounted on two opposite sides of the connecting shaft 312, and the connecting arms 311 are arc-shaped. In this embodiment, the chain wheel 3 is composed of a plurality of chain wheel blocks 31, the number of the chain wheel blocks 31 can be increased or decreased according to the size of the nuclear power plant pipeline, so as to meet the requirements of nuclear power plant pipelines with different sizes, thereby improving the applicability and universality of the automatic nuclear power plant pipeline scanner, and the chain wheel 3 has a simple structure and is convenient to install.
Specifically, when the axial driving member 122 rotates on the outer wall of the nuclear power plant pipeline, the roller 313 of the chain wheel 3 also rotates on the outer wall of the nuclear power plant pipeline, so that the technical effect that the circumferential driving member 11 rotates circumferentially around the nuclear power plant pipeline is achieved.
In an embodiment, as shown in fig. 1 and 2, the chain wheel 3 further includes a locking member 32 for pressing the roller 313 against the nuclear power plant pipeline, wherein two of the connecting arms 311 connect opposite ends of the locking member 32, respectively. It will be understood that the locking element 32 is provided with guide wheels by which the locking element 32 is lowered onto the outer wall of the nuclear power plant conduit. Specifically, the locking member 32 includes a first locking portion and a second locking portion, the first locking portion and the second locking portion are respectively rotatably connected to two adjacent connecting arms 311, and the first locking portion and the second locking portion are buckled; after the chain wheel 3 is wound on the outer wall of the nuclear power station pipeline, the roller 313 is pressed on the outer wall of the nuclear power station pipeline through buckling of the first locking part and the second locking part. In this embodiment, the design of the locking member 32 ensures that the chain wheel 3 is tightly wound on the nuclear power station pipeline, thereby improving the stability of the automatic nuclear power station pipeline scanner rotating around the nuclear power station pipeline.
In an embodiment, as shown in fig. 2, the axial connector 12 further includes a connecting rod 121, the circumferential driving member 11 is provided with a mounting ring 111, and the connector is mounted on the circumferential driving member 11 through the mounting ring 111; preferably, the connecting rod 121 is made of aluminum.
The connecting rod 121 is provided with a sliding groove 1211, and the bracket 2 is slidably connected in the sliding groove 1211. Understandably, the connecting rod 121 is installed in the inner hole of the installation ring 111, and the connecting rod 121 can rotate by 0-90 degrees, so that the probe 4 is tightly attached to the outer wall of the nuclear power station pipeline, and the detection accuracy of the nuclear power station pipeline automatic scanner is improved; and, by adjusting the position of the holder 2 in the sliding groove 1211, the probe 4 can be brought into abutment with the weld of the nuclear power plant pipe; in the embodiment, the automatic pipeline scanner for the nuclear power station is simple in structure and low in manufacturing cost.
In the particular embodiment shown in fig. 2, the support 2 comprises a phased array support and two ultrasound supports, the probe 4 comprises a phased array probe and two ultrasonic probes, the phased array probe is arranged on the phased array bracket, the ultrasonic probe is mounted on the ultrasonic bracket, the phased array bracket and the ultrasonic bracket are both slidably mounted in the sliding groove 1211, and the phased array probe and the ultrasonic probe can move, so that after the circumferential driving member 11 drives the connecting rod 121 to rotate by a preset angle, the phased array probe and the ultrasonic probe can move by a preset distance along the axial direction, therefore, after the connecting rod 121 rotates for a preset angle, the welding seam is scanned until the circumferential driving piece 11 drives the phased array probe and the ultrasonic probe to rotate for 360 degrees around the nuclear power station pipeline.
In an embodiment, as shown in fig. 1, the axial connector 12 includes an axial driver 122 for driving the probe 4 to move axially along the nuclear power plant pipeline, the axial driver 122 is mounted on the circumferential driver 11, and the support 2 is mounted at the output end of the circumferential driver 11. It is understood that the axial driving component 122 includes, but is not limited to, a linear motor, a screw 1222 nut mechanism, a pneumatic cylinder, a hydraulic cylinder, etc., and the axial driving component 122 can drive the bracket 2 to move along the axial direction of the nuclear power plant pipeline, so that after the axial driving component 122 and the chain wheel 3 are wound on the nuclear power plant pipeline, the axial driving component 122 can drive the probe 4 to move to the site to be detected of the nuclear power plant pipeline weld joint. In this embodiment, the axial driving element 122 is designed to improve convenience of the automatic pipeline scanner for a nuclear power plant.
In one embodiment, as shown in fig. 1, the axial driver 122 includes an axial motor 1221, a screw 1222, and a mounting nut 1223, the screw 1222 is connected to the output end of the axial motor 1221, the mounting nut 1223 is screwed with the screw 1222, and the bracket 2 is mounted on the mounting nut 1223. Specifically, an external thread is arranged on the screw 1222, a threaded through hole adapted to the external thread is arranged on the mounting nut 1223, and the screw 1222 penetrates through the threaded through hole and is in threaded connection with the threaded through hole. It will be appreciated that the lead screw 1222 and the mounting nut 1223 form a lead screw-nut mechanism. Further, the maximum stroke of the screw 1222 is 200mm, the minimum step of the mounting nut 1223 on the screw 1222 is 0.1mm, and the moving precision of the axial driver 122 is 0.01 mm. In this embodiment, the axial driving member 122 drives the bracket 2 to move axially along the nuclear power plant pipeline, and the structure is simple and the manufacturing cost is low.
In an embodiment, as shown in fig. 1, the axial connector 12 further includes a guide rail 13 connected to the circumferential driving member 11, the mounting nut 1223 is provided with a sliding slot, and the mounting nut 1223 is slidably mounted on the guide rail 13 through the sliding slot. It is understood that during the rotation of the screw 1222 by the axial motor 1221, the rotating screw 1222 will slide the mounting nut 1223 on the guide rail 13. In this embodiment, the design of the guide rail 13 improves the stability of the movement of the mounting nut 1223.
In the specific embodiment shown in fig. 1, two opposite sides of the mounting nut 1223 are provided with a bracket 2, the automatic nuclear power plant pipeline scanner further includes a distance adjustment assembly for adjusting the position of the bracket 2 on the mounting nut 1223, and the bracket 2 is mounted on the mounting nut 1223 through the distance adjustment assembly. Specifically, the distance adjustment assembly comprises a hand crank, a first screw 1222 and a first nut, the first screw 1222 can be mounted on the mounting nut 1223 through a bearing, the hand crank is connected with one end of the first screw 1222, the first nut is in threaded connection with the first screw 1222, the bracket 2 is mounted on the first nut, so that by rotating the hand crank, the hand crank drives the bracket 2 to move along the axial direction of the first screw 1222 through the first screw 1222, and a technical effect of adjusting the distance between the two probes 4 is achieved.
Further, the probe 4 includes two ultrasonic probes installed on the support 2, and the ultrasonic probe cannot move, so that the circumferential driving member 11 is driven after the circumferential driving member 11 rotates by a preset angle, the axial driving member 122 drives the ultrasonic probe to move by a preset distance along the axial direction of the nuclear power plant pipeline, so that the circumferential driving member 11 drives the axial driving member 122 to rotate by a preset angle, and then the general ultrasonic probe scans the weld joint after the preset angle until the circumferential driving member 11 drives the ultrasonic probe and the axial driving member 122 to rotate by 360 degrees around the nuclear power plant pipeline.
In one embodiment, as shown in fig. 1 and 2, the automatic nuclear power plant pipeline scanner is an encoder 5 for detecting whether the probe 4 rotates around the nuclear power plant pipeline for one circle, and the encoder 5 is installed on the circumferential connecting piece. It can be understood that, a circle of the nuclear power plant pipeline is provided with a welding seam, and in order to avoid the probe 4 from missing detection of the welding seam of the nuclear power plant pipeline, the encoder 5 can detect whether the probe 4, that is, the circumferential driving member 11) rotates for a circle around the outer wall of the nuclear power plant pipeline. In the embodiment, the encoder 5 is designed to avoid the missing detection of the welding seam of the nuclear power station pipeline by the probe 4, so that the accuracy of the detection result of the automatic nuclear power station pipeline scanner is further improved.
In one embodiment, as shown in fig. 1, the stent 2 comprises an elastic member (not shown) and a stent 2 body mounted on the circumferential driving member 11, and the probe 4 is mounted on the stent 2 body through the elastic member. Understandably, the probe 4 can be tightly attached to the outer wall of the nuclear power plant pipeline through the elastic force of the elastic part, so that the accuracy of the detection result of the automatic scanner for the nuclear power plant pipeline is further improved.
The above embodiments are merely exemplary embodiments of the automatic pipeline scanner for nuclear power plants, and are not intended to limit the present invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. An automatic scanner for a nuclear power station pipeline is characterized by comprising a driving assembly, a bracket, a chain wheel and a probe for detecting a welding seam of the nuclear power station pipeline; the driving assembly comprises a circumferential driving piece and an axial connecting piece connected with the circumferential driving piece, the bracket is installed on the axial connecting piece, and the probe is installed on the bracket;
the relative both ends of sprocket are installed respectively on the circumference driving piece, just the sprocket winding is on the nuclear power station pipeline, the circumference driving piece is used for the drive the axial connecting piece with the sprocket is around the circumferential direction of nuclear power station pipeline.
2. The automatic nuclear power plant pipeline scanner of claim 1, wherein the sprocket comprises a plurality of sprocket blocks, each sprocket block comprising a connecting arm, a connecting shaft, and a roller; two adjacent linking arms pass through the connecting axle rotates the connection, the gyro wheel is installed on the connecting axle.
3. The automatic nuclear power plant pipeline scanner according to claim 2, wherein the chain wheel further comprises a locking member for pressing the roller against the nuclear power plant pipeline, and two of the connecting arms are respectively connected to opposite ends of the locking member.
4. The automatic nuclear power plant pipeline scanner of claim 1, wherein the axial connector comprises a connecting rod, the circumferential driving member is provided with a mounting ring, and the connector is mounted on the circumferential driving member through the mounting ring;
the connecting rod is provided with a sliding groove, and the support is connected in the sliding groove in a sliding manner.
5. The automatic nuclear power plant pipeline scanner of claim 1, wherein the axial connector comprises an axial drive member for driving the probe to move axially along the nuclear power plant pipeline, the axial drive member is mounted on a circumferential drive member, and the bracket is mounted at an output end of the circumferential drive member.
6. The automatic pipeline scanner of claim 5, wherein the axial driving member comprises an axial motor, a screw rod and a mounting nut, the screw rod is connected to the output end of the axial motor, the mounting nut is in threaded connection with the screw rod, and the bracket is mounted on the mounting nut.
7. The automatic nuclear power plant pipeline scanner of claim 6, wherein the axial connector further comprises a guide rail connected with the circumferential driving member, the mounting nut is provided with a sliding groove, and the mounting nut is slidably mounted on the guide rail through the sliding groove.
8. The automatic nuclear power plant pipeline scanner of claim 1, wherein the automatic nuclear power plant pipeline scanner is an encoder for detecting whether the probe rotates around the nuclear power plant pipeline for one circle, and the encoder is mounted on the axial connector.
9. The automatic nuclear power plant pipeline scanner of claim 1, wherein the support includes a resilient member and a support body mounted on the circumferential drive member, the probe being mounted on the support body via the resilient member.
10. The automatic nuclear power plant pipeline scanner of claim 1, wherein the probe comprises a phased array probe and/or an ultrasonic probe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122023868.1U CN216309872U (en) | 2021-08-25 | 2021-08-25 | Automatic nuclear power station pipeline scanning device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122023868.1U CN216309872U (en) | 2021-08-25 | 2021-08-25 | Automatic nuclear power station pipeline scanning device |
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| CN216309872U true CN216309872U (en) | 2022-04-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753976A (en) * | 2022-08-23 | 2023-03-07 | 江苏江南检测有限公司 | Ultrasonic phased array detection device and method for thin-wall austenitic stainless steel pipe butt joint |
| CN118409065A (en) * | 2024-06-27 | 2024-07-30 | 烟台金润核电材料股份有限公司 | Nuclear power station pipeline welding seam detection device |
-
2021
- 2021-08-25 CN CN202122023868.1U patent/CN216309872U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115753976A (en) * | 2022-08-23 | 2023-03-07 | 江苏江南检测有限公司 | Ultrasonic phased array detection device and method for thin-wall austenitic stainless steel pipe butt joint |
| CN115753976B (en) * | 2022-08-23 | 2023-09-01 | 江苏江南检测有限公司 | Ultrasonic phased array detection device and method for butt joint of thin-wall austenitic stainless steel pipe |
| CN118409065A (en) * | 2024-06-27 | 2024-07-30 | 烟台金润核电材料股份有限公司 | Nuclear power station pipeline welding seam detection device |
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