CN216082597U - Positioning device for eddy current detection probe of heat transfer pipe of steam generator - Google Patents
Positioning device for eddy current detection probe of heat transfer pipe of steam generator Download PDFInfo
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- CN216082597U CN216082597U CN202121943367.9U CN202121943367U CN216082597U CN 216082597 U CN216082597 U CN 216082597U CN 202121943367 U CN202121943367 U CN 202121943367U CN 216082597 U CN216082597 U CN 216082597U
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Abstract
The utility model particularly relates to a positioning device for a steam generator heat-transfer pipe eddy current detection probe, which comprises a cylinder, a fixed toe, a mechanical arm, a threaded rod, a spring locking pin, a probe guide pipe and a ball head control rod assembly, wherein the cylinder is arranged on the fixed toe; a piston rod is arranged in the cylinder, one end of the piston rod is fixedly connected with a fixed toe, the other end of the piston rod is fixedly connected with a threaded rod, and the other end of the threaded rod is fixedly connected with a spring locking pin; the side surface of the cylinder is fixedly connected with a mechanical arm, a ball head control rod assembly is fixedly connected below the mechanical arm, and the tail end of the mechanical arm is connected with a probe guide pipe. The positioning device for the eddy current detection probe of the heat transfer tube of the steam generator can quickly and efficiently complete the eddy current detection task of a small number of heat transfer tubes of the steam generator in an emergency state.
Description
Technical Field
The utility model relates to the technical field of nuclear engineering, in particular to a positioning device for a steam generator heat-transfer pipe eddy current detection probe.
Background
The steam generator is an important device in the nuclear power plant, takes charge of the heat exchange task of the primary side and the secondary side, is also a second barrier for preventing nuclear leakage, and meanwhile, the heat exchange area of the heat transfer pipe of the steam generator accounts for more than 80% of the total area of a primary circuit pressure boundary, and the safety importance of the steam generator is self-evident. Therefore, in order to ensure the safe operation and the integrity of the primary loop system, the heat transfer tubes of the steam generator must be periodically and preventively tested to find out whether the defects are overproof and dangerous, and to prevent the accidents caused by the damage of the heat transfer tubes from causing irrecoverable loss. At present, the common method is to periodically carry out eddy current inspection on the heat transfer pipe to judge whether the heat transfer pipe has defects.
The mainstream locate mode that present steam generator heat-transfer pipe eddy current inspection used is crawl formula probe positioning robot, this location robot passes through the manual work and installs on the steam generator tube sheet, application robot path planning, through control software with the probe stand pipe accurate positioning of location robot front end under being examined the heat-transfer pipe mouth of pipe, thereby realize the location of probe, this location robot is applicable to the detection task of plan interior heat-transfer pipe on a large scale, but in recent years unplanned steam generator's emergent detection task more and more, its characteristic is the task urgent, the time limit for a project is short, it is few to receive the heat-transfer pipe, if detect with conventional location robot, the debugging cycle length of needs is long, auxiliary assembly is many and work load is big, be difficult to accomplish the detection task in the short time.
SUMMERY OF THE UTILITY MODEL
Based on this, it is necessary to provide a steam generator heat-transfer tube eddy current inspection probe positioner aiming at the problem that the conventional positioning robot cannot complete the eddy current inspection of the heat-transfer tubes of the steam generator in a short time, and the steam generator heat-transfer tube eddy current inspection probe positioner can rapidly and efficiently complete the eddy current inspection task of a small number of heat-transfer tubes of the steam generator in an emergency state.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a positioning device for a steam generator heat transfer tube eddy current test probe comprises a cylinder, a fixed toe, a mechanical arm, a threaded rod, a spring locking pin, a probe guide tube and a ball head control rod assembly;
a piston rod is arranged in the cylinder, one end of the piston rod is fixedly connected with a fixed toe, the other end of the piston rod is fixedly connected with a threaded rod, and the other end of the threaded rod is fixedly connected with a spring locking pin; the side surface of the cylinder is fixedly connected with a mechanical arm, a ball head control rod assembly is fixedly connected below the mechanical arm, and the tail end of the mechanical arm is connected with a probe guide pipe.
The working principle is as follows: when the device is used, one end, far away from the piston rod, of the fixed toe is manually inserted into a certain tube hole in the tube plate, the spring locking pin is rotated to drive the threaded rod to rotate, so that the piston rod in the cylinder moves outwards to expand the fixed toe, and the whole device is fixedly expanded on the tube plate; the mechanical arm is forced to do 360-degree horizontal free motion by manually rotating the ball control rod, so that the probe guide tube is accurately positioned right below the tube hole of the detected heat transfer tube.
Further, one end, far away from the air cylinder, of the threaded rod is provided with a spring locking pin socket, and one end of the spring locking pin penetrates through the spring locking pin socket and is fixedly connected with the threaded rod.
Further, the camera is fixedly connected to the upper portion of the mechanical arm, and the camera is in communication connection with the portable display.
Furthermore, the mechanical arm comprises a large mechanical arm and a small mechanical arm, one end of the large mechanical arm is fixedly connected with the side surface of the cylinder, and the other end of the large mechanical arm is rotatably connected with the small mechanical arm; a ball head control rod assembly is fixedly connected below the mechanical small arm, and a camera is fixedly connected above the mechanical small arm; the tail end of the mechanical small arm is connected with a probe guide tube.
Further, the mechanical big arm is connected with the mechanical small arm in a 360-degree horizontal rotation mode.
Furthermore, the ball head control rod assembly comprises a ball head and a control rod, the control rod is fixedly connected with the mechanical small arm, and the ball head is horizontally and rotatably connected with the control rod by 360 degrees.
The utility model has the beneficial technical effects that:
according to the positioning device for the eddy current detection probe of the heat transfer tube of the steam generator, provided by the utility model, the probe is quickly positioned by adopting a combination mode of a fixed base point and a mechanical arm, 360-degree relative movement of the positioning device in a horizontal space is realized by adopting the mechanical arm, manual control of the mechanical arm is realized by adopting a ball head type control rod, and the eddy current detection task of a small amount of heat transfer tubes of the steam generator can be quickly and efficiently completed in an emergency state.
Drawings
FIG. 1 is a schematic front view of an eddy current probe positioning device for a heat transfer tube of a steam generator according to the present invention;
FIG. 2 is a schematic top view of an embodiment of a positioning device for eddy current inspection probe of a heat transfer tube of a steam generator according to the present invention;
FIG. 3 is a schematic structural view of a positioning device for a steam generator heat-transfer tube eddy current inspection probe according to the present invention.
In the figure, 1, a tube plate; 2. positioning device for eddy current detection probe of heat transfer tube of steam generator; 3. fixing toes; 4. a mechanical big arm; 5. a mechanical forearm; 6. a threaded rod; 7. a spring tightens the lock pin; 8. a camera; 9. a probe guide tube; 10. a ball control lever assembly.
Detailed Description
In the description of the present invention, it is to be understood that the terms "left end", "right end", "upper end", "lower end", "above", "below", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-3, the utility model provides a steam generator heat-transfer pipe eddy current inspection probe positioning device 2, which comprises a cylinder, a fixed toe 3, a mechanical arm, a threaded rod 6, a spring locking pin 7, a probe guide pipe 9 and a ball head control rod 10 assembly;
a piston rod is arranged in the cylinder, one end of the piston rod is fixedly connected with a fixed toe 3, the other end of the piston rod is fixedly connected with a threaded rod 6, and the other end of the threaded rod 6 is fixedly connected with a spring locking pin 7; the cylinder side fixed connection arm, the ball control pole subassembly 10 of fixed connection in arm below, arm top fixed connection camera, arm end-to-end connection probe stand pipe 9, probe stand pipe 9 provides a passageway for the eddy current probe, and the eddy current probe passes through probe stand pipe 9 business turn over heat-transfer pipe in implementing the inspection process, plays the effect of direction for the eddy current probe.
Further, the one end that the cylinder was kept away from to threaded rod 6 sets up spring locking pin socket, spring locking pin one end is passed spring locking pin socket and threaded rod 6 fixed connection.
Further, arm top fixed connection camera 8, camera 8 is connected with portable display communication. The camera 8 is used for monitoring the real-time position of the probe guide tube 9 on the tube plate 1 and the state of the probe entering and exiting the heat transfer tube orifice, the motion process of the whole device is monitored by the camera 8 arranged on the mechanical arm, and an operator constantly observes and confirms the real-time position of the probe guide tube 9 on the tube plate 1 and the state of the probe entering and exiting the heat transfer tube orifice through the portable display.
Further, the mechanical arm comprises a large mechanical arm 4 and a small mechanical arm 5, one end of the large mechanical arm 4 is fixedly connected with the side surface of the cylinder, and the other end of the large mechanical arm 4 is rotatably connected with the small mechanical arm 5, so that the small mechanical arm 5 can move freely relative to the large mechanical arm 4; a ball head control rod assembly 10 is fixedly connected below the mechanical small arm 5, a camera 8 is fixedly connected above the mechanical small arm 5, the ball head control rod assembly 10 forces the mechanical arm to horizontally and freely move for 360 degrees in a manual rotating mode, and the ball head guide pipe is accurately positioned right below a pipe hole of the detected heat transfer pipe; the tail end of the mechanical small arm 5 is connected with a probe guide tube 9.
Further, the mechanical big arm 4 is horizontally and rotatably connected with the mechanical small arm 5360 degrees, so that the mechanical small arm 5 can horizontally and freely move 360 degrees relative to the mechanical big arm 4; the ball control rod assembly 10 comprises a ball head and a control rod, the control rod is fixedly connected with the mechanical small arm 5, the ball head is horizontally and rotatably connected with the control rod by 360 degrees, the movement of the mechanical small arm 5 is realized through the rotation of the control rod, the mechanical small arm 5 is forced to horizontally and freely move by 360 degrees under the action of external force, and therefore the probe guide tube 9 is accurately positioned under a tube hole of a detected heat transfer tube.
When the device is used, one end, far away from the piston rod, of the fixed toe 3 is manually inserted into a certain tube hole in the tube plate 1, the spring locking pin 7 is rotated to drive the threaded rod 6 to rotate, so that the piston rod in the cylinder moves outwards to expand the fixed toe 3, and the whole device is fixedly expanded on the tube plate 1; the mechanical small arm 5 does 360-degree horizontal free motion relative to the mechanical large arm 4, the probe guide tube 9 does 360-degree horizontal free motion under the action of the mechanical arm by manually rotating the ball head control rod assembly 10 connected to the mechanical small arm 5, and therefore the probe guide tube 9 is accurately positioned right below the tube hole of the detected heat transfer tube. The motion process of the whole device is monitored by the camera 8 arranged on the mechanical arm, and an operator constantly observes and confirms the real-time position of the probe guide tube 9 on the tube plate 1 and the state of the probe entering and exiting the mouth of the heat transfer tube by the portable display.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (6)
1. A positioning device for a steam generator heat transfer tube eddy current test probe is characterized by comprising a cylinder, a fixed toe (3), a mechanical arm, a threaded rod (6), a spring locking pin (7), a probe guide tube (9) and a ball head control rod assembly (10);
a piston rod is arranged in the cylinder, one end of the piston rod is fixedly connected with a fixed toe (3), the other end of the piston rod is fixedly connected with a threaded rod (6), and the other end of the threaded rod (6) is fixedly connected with a spring locking pin (7); the side surface of the cylinder is fixedly connected with a mechanical arm, a ball head control rod assembly (10) is fixedly connected to the lower portion of the mechanical arm, and the tail end of the mechanical arm is connected with a probe guide tube (9).
2. The steam generator heat transfer tube eddy current test probe positioning device as recited in claim 1, characterized in that the end of the threaded rod (6) away from the cylinder is provided with a spring locking pin socket, and one end of the spring locking pin passes through the spring locking pin socket and is fixedly connected with the threaded rod (6).
3. The steam generator heat transfer tube eddy current test probe positioning device as recited in claim 1, characterized in that a camera (8) is fixedly connected above said mechanical arm, and said camera (8) is connected with a portable display in communication.
4. The steam generator heat transfer tube eddy current test probe positioning device according to claim 3, characterized in that the mechanical arm comprises a mechanical large arm (4) and a mechanical small arm (5), one end of the mechanical large arm (4) is fixedly connected with the side surface of the cylinder, and the other end of the mechanical large arm (4) is rotatably connected with the mechanical small arm (5); a ball head control rod assembly (10) is fixedly connected to the lower portion of the mechanical small arm (5), and a camera (8) is fixedly connected to the upper portion of the mechanical small arm (5); the tail end of the mechanical small arm (5) is connected with a probe guide tube (9).
5. The steam generator heat transfer tube eddy current inspection probe positioning device according to claim 4, wherein the mechanical large arm (4) is connected with the mechanical small arm (5) in a 360-degree horizontal rotation manner.
6. The steam generator heat transfer tube eddy current inspection probe positioning device according to claim 5, characterized in that the ball control rod assembly (10) comprises a ball and a control rod, the control rod is fixedly connected with the mechanical small arm (5), and the ball is connected with the control rod in a 360-degree horizontal rotation manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121943367.9U CN216082597U (en) | 2021-08-19 | 2021-08-19 | Positioning device for eddy current detection probe of heat transfer pipe of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121943367.9U CN216082597U (en) | 2021-08-19 | 2021-08-19 | Positioning device for eddy current detection probe of heat transfer pipe of steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216082597U true CN216082597U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121943367.9U Active CN216082597U (en) | 2021-08-19 | 2021-08-19 | Positioning device for eddy current detection probe of heat transfer pipe of steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216082597U (en) |
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2021
- 2021-08-19 CN CN202121943367.9U patent/CN216082597U/en active Active
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