CN209821129U - Probe laminating device for weld joint detection - Google Patents
Probe laminating device for weld joint detection Download PDFInfo
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- CN209821129U CN209821129U CN201822159328.4U CN201822159328U CN209821129U CN 209821129 U CN209821129 U CN 209821129U CN 201822159328 U CN201822159328 U CN 201822159328U CN 209821129 U CN209821129 U CN 209821129U
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Abstract
The utility model relates to an ultrasonic device nondestructive test field, concretely relates to probe laminating device for welding seam detects. The prior art is difficult to satisfy the detection to saddle face welding seam, needs probe laminating device self to have stronger distance adaptability to when guaranteeing that equipment moves to horizontal position, the probe can effectively laminate on the welding seam surface. The device consists of a scanning arm, a swinging component, a probe holder and a crawling trolley, wherein the crawling trolley bears the whole probe attaching device, the scanning arm is hinged with the crawling trolley, one end of the swinging arm component is hinged with a cross-connecting seat B on the crawling trolley, the other end of the swinging arm component is hinged with a hinged seat A on the scanning arm, and the scanning arm, the swinging component and the crawling trolley are hinged with each other to form a connecting rod mechanism. The distance between the scanning arm and the saddle surface welding seam piece can be adjusted in real time, the distance between the probe holder and the saddle surface welding seam surface is relatively fixed, large-range expansion is not needed, and the ultrasonic probe can be effectively attached to the welding seam surface.
Description
Technical Field
The invention relates to the field of nondestructive testing of ultrasonic devices, in particular to a probe fitting device for weld joint detection.
Background
The nuclear reaction in the nuclear power station is carried out in the pressure vessel, the formed high-temperature and high-pressure gas or liquid needs to be conveyed to other equipment of a loop by using a connecting pipe which is communicated with the pressure vessel, due to the limitation of a manufacturing process, the connecting pipe and a pressure vessel cylinder are manufactured and molded separately, and then the connecting pipe and the pressure vessel cylinder are firmly connected on a communicated surface through a circle of annular welding line, the welding line is distributed along a relatively complex curved surface on the communicated surface, and the curved surface is called saddle surface welding line, and the nuclear power station needs to be periodically detected during operation so as to implement aging management.
The novel nuclear power station cannot detect saddle surface welding seams from the interior of a pressure vessel due to the technical characteristics of the novel nuclear power station, and needs equipment to detect the welding seams from the outer wall of a cylinder body; because the spatial curved surface of the saddle surface welding line is complex, the common working mode of the equipment is that the equipment does circular motion around the excircle of the connecting pipe, and the scanning arm carrying the probe is attached to the outer wall of the cylinder; along with the circular motion of equipment around the takeover excircle, sweep and examine arm and probe and follow the adjustment along with the trend change of the regional curved surface of welding seam place, guarantee probe and the regional laminating of welding seam constantly to implement ultrasonic detection.
Because the diameter of the connecting pipe exceeds 2 meters and the space around the welding seam is compact, the excircle movement of the equipment around the connecting pipe in the horizontal direction is difficult to realize through a fixed whole-circle guide rail, and the currently common mode is to carry out ultrasonic detection on the saddle surface welding seam by taking a crawling trolley with magnetic adsorption as a carrier and a probe laminating device; and welding seam welding department material thickness is thicker, demand according to ultrasonic inspection, the motion range of probe need be in the welding seam diameter direction on prolong the barrel and show the longer distance of motion, and the diameter of pressure vessel barrel exceeds 5 meters, the curved surface of distribution of welding seam on the space is complicated, it is great along the ascending difference of takeover axis direction, if this section difference of adaptation is stretched out and drawn back to the spring self-adaptation that relies on the probe rear of the simplicity, then the flexible stroke overlength of probe, the cantilever of overlength can cause the unstability of laminating, long distance elastic stretching movement self also has uncontrollable condition, so need probe laminating device self to have stronger distance adaptability, in order to guarantee when equipment moves to horizontal position, the probe can effectively laminate on the welding seam surface.
Disclosure of Invention
Firstly, the purpose is as follows:
the invention aims to provide a probe fitting device for detecting a large-diameter saddle surface weld joint, which avoids the problem that the fitting effect of a probe is influenced even the weld joint detection cannot be finished due to an overlong elastic telescopic range.
The technical scheme is as follows:
a probe fitting device for weld inspection, comprising: scanning arm, creeping trolley, swinging arm part and probe holder. The crawling trolley bears the whole probe attaching device, the scanning arm is hinged with the crawling trolley, and the probe holder is fixedly arranged on the scanning arm and close to one side of a detected welding line; one end of the swing arm part is hinged with a hinge seat B on the crawling trolley, and the other end of the swing arm part is hinged with a hinge seat A on the scanning arm; the scanning arm, the swing arm part and the crawling trolley are hinged with each other to form a connecting rod mechanism.
The swing motor module in the swing arm part is hinged with a hinge seat B through a rotating shaft A, and the sleeve is hinged with the hinge seat A through the rotating shaft B; the swing motor module directly drives the screw rod module to rotate, the nut is connected with the sleeve, when the screw rod module rotates, the nut and the sleeve cannot rotate, so that the nut moves linearly along the screw rod module, and further the length of the swing arm part can be increased or shortened. The lead screw used in the lead screw module is a lead screw with a self-locking function, and when the length of the swing arm part is adjusted, the length of the swing arm part cannot be changed due to the action of external force.
The scanning arm specifically comprises: the device comprises an axial driving motor module, a parallel transmission pair, a screw rod, a guide rail A, a sliding block, a nut seat, a guide rail seat, a rotating seat and a hinge seat A; the guide rail seat and the guide rail A are connected into a whole and are the basis of the scanning arm, the axial driving motor module is arranged on the back of the guide rail seat, and power is transmitted to the screw rod through the parallel transmission pair; the screw rod pushes the nut seat to do linear motion along the guide rail A under the bearing of the slide block; the guide rail A mounting seat and the rotating seat can swing relatively, and the hinge seat A is mounted on the back of the guide rail A.
The probe holder specifically includes: the device comprises a mounting seat, a sliding block, a guide rail B, a constant force spring, a spring rotating shaft, a connecting seat, a swinging shaft, a swinging seat, a limiting column, a swinging fork, a swinging pin, a limiting pin, a probe frame and a compression screw; the mounting seat is the foundation of the probe holder and is connected with the nut seat on the scanning arm; the number of the sliding blocks is 2, the sliding blocks are all arranged on the mounting seat, and the guide rail B can freely stretch and slide under the support of the sliding blocks; the constant force spring is embedded in the mounting seat under the limitation of the spring rotating shaft, and the tail end of the constant force spring is connected with the tail end of the guide rail B through a compression screw; when the front end of the probe holder is free from obstruction, the constant force spring contracts to drive the guide rail B to extend forwards until the guide rail B is blocked, and when the distance between the probe holder and the surface of a welding seam is reduced, the guide rail B is pushed back by the counterforce, and the constant force spring extends along with the guide rail B. The connecting seat is arranged on the guide rail B; the swing shaft is installed on the connecting seat, and the swing seat can rotate around the swing shaft, and the swing range of swing seat is restricted to swing axle rear side being provided with spacing post.
The swing forks are arranged on two sides of the swing seat, and the front end of each swing fork is provided with a swing pin and a limiting pin; the probe frame can rotate around the swing pins under the support of the two swing pins, and the limiting pins can limit the rotation amplitude of the probe frame. An ultrasonic probe is arranged in the probe frame, and the probe frame is made of plastic.
Third, effect
The invention has the following effects: when the detection equipment moves around the horizontal connecting pipe, the distance between the scanning arm and the saddle surface welding seam piece can be adjusted in real time, the requirements for the self telescopic range of the probe clamp holder are remarkably reduced, and meanwhile, the distance between the probe clamp holder and the saddle surface welding seam surface is relatively fixed when the probe clamp holder does linear motion along the scanning arm, so that the probe clamp holder does not need to be telescopic in a large range, and the ultrasonic probe can be effectively attached to the welding seam surface.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the scanning arm;
FIG. 3 is a schematic view of the structure of the swing arm assembly;
FIG. 4 is a schematic structural view of a probe holder;
FIG. 5 is a schematic view of the actual installation of the present invention;
fig. 6 is a schematic diagram of the present invention.
In the figure, 1, a scanning arm, 2, a swing arm component, 3, a probe holder, 4, a crawling trolley, 5, an outer wall of a pressure container cylinder body, 6, a horizontal connecting pipe, 7, a saddle welding seam, 1001, an axial driving motor module, 1002, a parallel transmission pair, 1003, a lead screw, 1004, a guide rail A, 1005, a sliding block, 1006, a nut seat, 1007, a guide rail seat, 1008, a rotating seat, 1009, a hinge seat A, 2001, a swing motor module, 2002, a rotating shaft A, 2003, a lead screw module, 2004, a nut, 2005, a sleeve, 2006, a rotating shaft B, 3001, a mounting seat, 3002, a sliding block, 3003, a guide rail B, 3004, a constant force spring, 3005, a spring rotating shaft, 3006, a connecting seat, 3007, a swing shaft, 3008, a swing seat, 3009, a limiting column, 3010, a swing fork, 3011, a swing pin, 3012, a limiting pin, 3013, a probe frame, 3014, an ultrasonic probe, 3015, and a pressing seat B.
Detailed Description
The probe laminating device consists of a scanning arm, a swing arm part and a probe holder, the probe holder is arranged on the scanning arm, the scanning arm and the swing arm part are both arranged on the crawling trolley, the swing arm part can stretch and retract, and the scanning arm, the swing arm part and the crawling trolley are hinged with each other, so that a connecting rod mechanism with a swinging function is formed; the ultrasonic probe is arranged in a self-adaptive swinging structure at the front end of the probe holder, and can adapt to the complex space curved surface of the saddle surface and keep fit through the compression of the constant force spring and the self-adaptive swinging structure at the front end of the probe holder;
when the equipment is positioned at the top end of the horizontal connecting pipe, the equipment is closest to the straight line distance of the welding line, the scanning arm is in a vertical state, and the probe clamp stretches forwards slightly to attach the ultrasonic probe to the surface of the welding line; when the equipment moves from the top end of the horizontal connecting pipe to the horizontal position gradually, the distance between the equipment and the surface of a welding seam is gradually enlarged, the length of the swing arm part per se is gradually extended, the scanning arm is pushed to incline towards the direction of the welding seam, on one hand, the distance between the crawling trolley and the surface of the welding seam can be compensated to a certain extent, on the other hand, the scanning arm is tangent to the cambered surface of the welding seam as far as possible, so that when the probe holder moves linearly along the scanning arm, the distance between the probe and the surface of the welding seam is relatively stable, obvious change cannot occur, and probe fitting is facilitated.
The specific implementation process is as follows:
in figure 1, the probe laminating device is by scanning arm 1, swing arm part 2, probe holder 3 constitutes, crawling dolly 4 is bearing whole probe laminating device, scanning arm 1 is articulated with crawling dolly 4, the one end of swing arm part 2 is articulated with articulated seat B4001 on crawling dolly 4, the other end is articulated with articulated seat A1009 on scanning arm 1, swing arm part 2 forms a link mechanism after crawling dolly 4 articulates each other, when swing arm part 2 self length becomes long, scanning arm 1 slopes forward, when swing arm part 2 self length shortens, scanning arm 1 leans back.
In fig. 2, a guide rail seat 1007 and a guide rail a1004 are connected into a whole and are the basis of the scanning arm 1, and an axial driving motor module 1001 is installed on the back of the guide rail seat 1007 and transmits power to a screw 1003 through a parallel transmission pair 1002; the lead screw 1003 pushes the nut seat 1006 to make linear motion along the guide rail A1004 under the load of the slide block 1005; the guide rail seat 1007 and the rotating seat 1008 can swing relatively, and the hinge seat A1009 is arranged on the back of the guide rail A1004.
In fig. 3, a swing motor module 2001 in a swing arm part 2 is hinged to a hinge seat B4001 through a rotating shaft a2002, a sleeve 2005 is hinged to a hinge seat a1009 through a rotating shaft B2006, the swing motor module 2001 directly drives a lead screw module 2003 to rotate, and a nut 2004 is connected to the sleeve 2005.
In fig. 4, a mounting base 3001 is a base of a probe holder 3 and is used for being connected with a nut base 1006 on a scanning arm 1, a slider 3002 is mounted on the mounting base 3001, in order to increase the stretching stability of the probe holder 3, 2 sliders 3002 are arranged, a guide rail B3003 can freely stretch and slide under the support of the sliders 3002, a constant force spring 3004 is embedded in the mounting base 3001 under the limitation of a spring rotating shaft 3005, the tail end of the constant force spring 3004 is connected with the tail end of the guide rail B3003 through a compression screw 3015, when the front end of the probe holder 3 is not obstructed, the constant force spring 3004 contracts and drives the guide rail B3003 to extend forwards until the guide rail B3003 is obstructed, and when the distance between the probe holder 3 and the surface of a weld is reduced, a counter-acting force pushes the guide rail B3003 back, and the constant force spring 3004;
the connecting seat 3006 is mounted on the guide rail B3003 and can move together with the guide rail B3003, the swing shaft 3007 is mounted on the connecting seat 3006, the swing seat 3008 can rotate around the swing shaft 3007, the limiting column 3009 is arranged behind the swing shaft 3007 and can limit the swing amplitude of the swing seat 3008 to prevent the ultrasonic probe 3014 from being attached to the surface of a weld joint due to the fact that the swing angle of the swing seat 3008 is too large, the two swing forks 3010 are mounted on two sides of the swing seat 3008, the front end of each swing fork 3010 is provided with the swing pin 3011 and the limiting pin 3012, the probe frame 3013 can rotate around the swing pin 3011 under the support of the two swing pins 3011, the limiting pin 3012 can limit the rotation amplitude of the probe frame 3013, the ultrasonic probe 3014 is mounted in the probe frame 3013, and the probe frame 3013 is made of plastic materials to prevent the surface of the weld joint and the friction joint surface from.
In fig. 5, the crawling trolley 4 is located right above the horizontal connecting pipe 6, the linear distance between the crawling trolley 4 and the surface of the outer wall 6 of the pressure vessel cylinder is the shortest, the scanning arm 1 is in a vertical state, and the ultrasonic probe 3014 can be attached to the saddle surface weld seam 7 only by slightly extending one end of the probe holder 3.
Fig. 6 is a view from the top to the bottom, in which the crawling trolley 4 moves to a horizontal position, at this time, the distance between the crawling trolley 4 and the outer wall 5 of the pressure vessel cylinder is significantly increased, and to compensate for this increase in distance, the length of the swing arm part 2 itself is extended, the scanning arm 1 is pushed to incline towards the outer wall 5 of the pressure vessel cylinder, and is approximately tangent to the arc of the outer wall 5 of the pressure vessel cylinder, at this time, the guide rail B3003 in the probe holder 3 extends under the action of the constant force spring 3004 until the ultrasonic probe 3014 at the front end is attached to the outer wall 5 of the pressure vessel cylinder, at this time, because the guide rail B3003 is not strictly vertical to the outer wall 5 of the pressure vessel cylinder, there is a small deflection angle, so that the swing seat 3008 is deflected by an angle to adapt to the deflection angle, as can also be seen from the figure, when the probe holder 4 verifies that the scanning arm 1 makes a linear motion, the expansion amplitude of the probe clamp 4 can not be changed greatly, and the stability of the ultrasonic probe 3014 attached to the outer wall 5 of the pressure vessel cylinder is kept.
Claims (7)
1. A probe fitting device for weld inspection, comprising: sweep and look into arm (1), crawl dolly (4), its characterized in that: the crawling trolley (4) bears the whole probe attaching device, the scanning arm (1) is hinged with the crawling trolley (4), and the probe holder (3) is fixedly arranged on the scanning arm (1) and is close to one side of a detected welding line; one end of the swing arm part (2) is hinged with a hinge seat B (4001) on the crawling trolley (4), and the other end of the swing arm part is hinged with a hinge seat A (1009) on the scanning arm (1); the scanning arm (1), the swing arm part (2) and the crawling trolley (4) are hinged with each other to form a connecting rod mechanism;
a swing motor module (2001) in the swing arm part (2) is hinged with a hinged seat B (4001) through a rotating shaft A (2002), and a sleeve (2005) is hinged with a hinged seat A (1009) through a rotating shaft B (2006); the swing motor module (2001) directly drives the screw rod module (2003) to rotate, and the nut (2004) is connected with the sleeve (2005).
2. The probe bonding apparatus for weld inspection according to claim 1, wherein: the scanning arm (1) comprises the following specific structures: the device comprises an axial driving motor module (1001), a parallel transmission pair (1002), a screw rod (1003), a guide rail A (1004), a sliding block (1005), a nut seat (1006), a guide rail seat (1007), a rotating seat (1008) and a hinge seat A (1009); the guide rail seat (1007) and the guide rail A (1004) are connected into a whole and are the basis of the scanning arm (1), the axial driving motor module (1001) is installed on the back of the guide rail seat (1007), and power is transmitted to the screw rod (1003) through the parallel transmission pair (1002); the screw rod (1003) pushes the nut seat (1006) to do linear motion along the guide rail A (1004) under the load of the slide block (1005); the guide rail seat (1007) and the rotating seat (1008) can swing relatively, and the hinged seat A (1009) is installed on the back of the guide rail A (1004).
3. The probe bonding apparatus for weld inspection according to claim 1, wherein: the probe holder (3) specifically comprises: the device comprises a mounting seat (3001), a sliding block (3002), a guide rail B (3003), a constant force spring (3004), a spring rotating shaft (3005), a connecting seat (3006), a swinging shaft (3007), a swinging seat (3008), a limiting column (3009), a swinging fork (3010), a swinging pin (3011), a limiting pin (3012), a probe frame (3013) and a compression screw (3015); the mounting seat (3001) is the foundation of the probe holder (3) and is connected with the nut seat (1006) on the scanning arm (1); the number of the sliding blocks (3002) is 2, the sliding blocks are all arranged on the mounting base (3001), and the guide rail B (3003) can freely extend and retract to slide under the support of the sliding blocks (3002); the constant force spring (3004) is embedded in the mounting seat (3001) under the limitation of the spring rotating shaft (3005), and the tail end of the constant force spring (3004) is connected with the tail end of the guide rail B (3003) through a compression screw (3015).
4. The probe bonding apparatus for weld inspection according to claim 3, wherein: the connecting seat (3006) is arranged on the guide rail B (3003); the swing shaft (3007) is installed on the connecting seat (3006), the swing seat (3008) can rotate around the swing shaft (3007), and the rear of the swing shaft (3007) is provided with a limiting column (3009) for limiting the swing amplitude of the swing seat (3008).
5. The probe bonding apparatus for weld inspection according to claim 3, wherein: the swing forks (3010) are arranged on two sides of the swing seat (3008), and a swing pin (3011) and a limit pin (3012) are arranged at the front end of each swing fork (3010); the probe frame (3013) can rotate around the swing pins (3011) under the support of the two swing pins (3011), and the limiting pins (3012) can limit the rotation range of the probe frame (3013).
6. The probe bonding apparatus for weld inspection according to claim 3, wherein: an ultrasonic probe (3014) is arranged in the probe frame (3013), and the probe frame (3013) is made of plastic materials.
7. The probe bonding apparatus for weld inspection according to claim 1, wherein: the lead screw used in the lead screw module (2003) is a lead screw with a self-locking function, and when the length of the swing arm part (2) is adjusted, the length of the swing arm part cannot be changed due to the action of external force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159328.4U CN209821129U (en) | 2018-12-21 | 2018-12-21 | Probe laminating device for weld joint detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822159328.4U CN209821129U (en) | 2018-12-21 | 2018-12-21 | Probe laminating device for weld joint detection |
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| Publication Number | Publication Date |
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| CN209821129U true CN209821129U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822159328.4U Active CN209821129U (en) | 2018-12-21 | 2018-12-21 | Probe laminating device for weld joint detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461928A (en) * | 2020-11-17 | 2021-03-09 | 广州多浦乐电子科技股份有限公司 | Automatic detection device for ultrasonic phased array on surface of workpiece |
-
2018
- 2018-12-21 CN CN201822159328.4U patent/CN209821129U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112461928A (en) * | 2020-11-17 | 2021-03-09 | 广州多浦乐电子科技股份有限公司 | Automatic detection device for ultrasonic phased array on surface of workpiece |
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