CN216669848U

CN216669848U - Spiral welded pipe welding seam inspection device that detects a flaw

Info

Publication number: CN216669848U
Application number: CN202123381955.0U
Authority: CN
Inventors: 宋国辉; 滑长礼; 杨占杰
Original assignee: Hebei Pinhua Pipe Industry Co ltd
Current assignee: Hebei Pinhua Pipe Industry Co ltd
Priority date: 2021-12-30
Filing date: 2021-12-30
Publication date: 2022-06-03
Anticipated expiration: 2031-12-30

Abstract

The utility model relates to the technical field of spiral welded pipe weld joint inspection, in particular to a spiral welded pipe weld joint flaw detection inspection device. Include the frame below is provided with the deflector, sliding connection has the slider on the deflector, the fixed setting in the slider bottom of probe, probe and spiral weld pipe contact, the locating rack sets up both sides around the frame, when examining the position of detecting a flaw, places the frame in the detection position, and the horizon bar of frame bottom is used for the horizontal detection position of positioning probe, presses the frame downwards, can press the probe on spiral weld pipe, after starting servo motor, servo motor can detect through screw rod and slider drive probe reciprocating motion about detecting the position, replaces artifical handheld probe reciprocal promotion detection, and detection efficiency improves greatly to fix a position the probe through the support frame, the probe motion is more steady, skew can not appear and break away from phenomenons such as detection position, and it is higher to examine the precision.

Description

Spiral welded pipe welding seam inspection device that detects a flaw

Technical Field

The utility model relates to the technical field of spiral welded pipe weld joint inspection, in particular to a spiral welded pipe weld joint flaw detection inspection device.

Background

In the related art, the flaw detection of some pipes is usually performed by a rotary flaw detection method, and the pipe rotates relative to the ultrasonic probe device and moves along the axial direction, so that the flaw detection of the pipe is completed in the process.

When the local flaw detection or the spot inspection of the spiral welded pipe is carried out, an operator needs to hold a flaw detector and a probe by hand, the probe is pressed on the spiral welded pipe, and the probe moves back and forth at the position of a welding seam to inspect the position of the welding seam; the hand-held probe is rubbed on the spiral welded pipe, the motion of the probe is very unstable, the probe is easy to deviate from a detection position or appear that the probe deviates from a detection surface, and the like, so that the detection result is influenced; and the detection of frequent reciprocating movement of the handheld probe is laborious.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problems and provides a flaw detection device for welding seams of a spiral welded pipe, which aims at overcoming the technical defects, and comprises a guide plate arranged below a rack, a slide block is connected on the guide plate in a sliding manner, a probe is fixedly arranged at the bottom of the slide block and is in contact with the spiral welded pipe, positioning frames are arranged at the front side and the rear side of the rack, the rack is placed at a detection position when the flaw detection position is detected, a horizontal rod at the bottom of the rack is used for positioning the transverse detection position of the probe, the rack is pressed downwards to press the probe on the spiral welded pipe, after a servo motor is started, the servo motor can drive the probe to reciprocate left and right at the detection position through a screw rod and the slide block to perform detection instead of manually pushing the probe to reciprocate, the detection efficiency is greatly improved, the probe is positioned through a support frame, the probe moves more stably, the phenomena of deviation and separation from the detection position and the like can not occur, and the detection precision is higher.

In order to solve the technical problems, the technical scheme adopted by the utility model is as follows: comprises a spiral welded pipe, a flaw detector and an automatic reciprocating flaw detection device; the automatic reciprocating flaw detection device is arranged on the spiral welded pipe; a cable is arranged on one side of the flaw detector; the other end of the cable is provided with a probe; the probe is arranged on the automatic reciprocating flaw detection device; the automatic reciprocating flaw detection device comprises a rack, a servo motor, a screw and a positioning frame; the screw is arranged in the middle of the frame; the servo motor is fixedly arranged on one side of the rack and used for driving the screw rod to rotate; a guide plate is arranged below the rack; the guide plate is connected with a sliding block in a sliding manner; the upper part of the sliding block is in threaded connection with the screw rod; the positioning frames are arranged on the front side and the rear side of the rack.

Further optimizing the technical scheme, the probe is fixedly arranged at the bottom of the sliding block; the probe is in contact with the spiral welded pipe.

Further optimizing the technical scheme, the front side and the rear side of the rack are fixedly provided with linear bearings; guide rods are arranged above two sides of the positioning frame; the guide rod is connected to the linear bearing in a penetrating and sliding manner; a horizontal rod is arranged below the positioning frame in the horizontal direction; the horizontal rod is arranged on the spiral welded pipe.

Further optimize this technical scheme, the horizon bar on be provided with anti-skidding rubber sleeve.

Further optimizing the technical scheme, a limiting table is arranged above the linear bearing and at the top of the guide rod; a clamping table is arranged on the guide rod below the linear bearing; and a spring is arranged on the guide rod between the clamping table and the linear bearing.

Compared with the prior art, the utility model has the following advantages:

1. when the position of detecting a flaw is examined, place the frame in the detection position, the horizon bar of frame bottom is used for the horizontal detection position of positioning probe, presses the frame downwards, can press the probe on the spiral welded tube, after starting servo motor, servo motor will pass through screw rod and slider drive probe and detect in the reciprocating motion about the detection position, replaces artifical handheld probe reciprocal promotion detection, and detection efficiency improves greatly.

2. The probe is positioned by the support frame, the probe moves stably, the phenomena of deviation, separation from a detection position and the like cannot occur, and the detection precision is high.

Drawings

FIG. 1 is a schematic diagram of the detection state of a flaw detection device for the weld seam of a spiral welded pipe.

FIG. 2 is a schematic view showing a structure of a flaw detection part of the automatic reciprocating flaw detector.

FIG. 3 is a partial sectional view of the internal structure of a frame of the flaw detection device for the weld joint of the spiral welded pipe.

FIG. 4 is a schematic view of a guide rod part mounting structure of a flaw detection device for weld joints of spiral welded pipes.

In the figure: 1. spirally welding the tube; 2. a flaw detector; 201. a cable; 202. a probe; 3. an automatic reciprocating flaw detection device; 301. a frame; 302. a servo motor; 303. a screw; 304. a positioning frame; 305. a guide plate; 306. a slider; 307. a linear bearing; 308. a guide bar; 309. a horizontal bar; 310. an anti-slip rubber sleeve; 311. a limiting table; 312. clamping a platform; 313. a spring.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It is to be understood that these descriptions are only illustrative and are not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The first embodiment is as follows: with reference to fig. 1-4, a flaw detection device for weld joints of spiral welded pipes is characterized in that: comprises a spiral welded pipe 1, a flaw detector 2 and an automatic reciprocating flaw detection device 3; the automatic reciprocating type flaw detection device 3 is arranged on the spiral welded pipe 1; a cable 201 is arranged on one side of the flaw detector 2; the other end of the cable 201 is provided with a probe 202; the probe 202 is arranged on the automatic reciprocating flaw detection device 3; the automatic reciprocating flaw detection device 3 comprises a rack 301, a servo motor 302, a screw 303 and a positioning frame 304; the screw 303 is arranged in the middle of the frame 301; the servo motor 302 is fixedly arranged on one side of the rack 301 and is used for driving the screw 303 to rotate; a guide plate 305 is arranged below the frame 301; a sliding block 306 is slidably connected to the guide plate 305; the upper part of the sliding block 306 is connected to the screw 303 through threads; the positioning frames 304 are arranged on the front side and the rear side of the frame 301.

Preferably, the probe 202 is fixedly arranged at the bottom of the sliding block 306; the probe 202 is in contact with the spiral welded pipe 1.

Preferably, linear bearings 307 are fixedly arranged on the front side and the rear side of the frame 301; guide rods 308 are arranged above two sides of the positioning frame 304; the guide rod 308 is connected to the linear bearing 307 in a penetrating and sliding manner; a horizontal rod 309 is arranged below the positioning frame 304 in the horizontal direction; the horizontal bar 309 is disposed on the spiral welded pipe 1.

Preferably, the horizontal rod 309 is provided with an anti-slip rubber sleeve 310.

Preferably, a limit table 311 is arranged above the linear bearing 307 and on the top of the guide rod 308; a clamping table 312 is arranged on the guide rod 308 below the linear bearing 307; a spring 313 is provided on the guide bar 308 between the catch 312 and the linear bearing 307.

The theory of operation, it is shown in combination with fig. 1-4, when detecting a flaw spiral welded pipe 1, place frame 301 at appointed detection position, the fixed linear bearing 307 that is provided with in both sides around frame 301, locating rack 304 both sides top is provided with guide bar 308, guide bar 308 runs through sliding connection on linear bearing 307, locating rack 304 below is provided with horizon bar 309 on the horizontal direction, horizon bar 309 sets up on spiral welded pipe 1, be provided with anti-skidding rubber sleeve 310 on the horizon bar 309, place two anti-skidding rubber sleeves 310 around detection position both sides around, realized the location of probe 202 front and back position, through anti-skidding rubber sleeve 310 and spiral welded pipe 1 contact, play anti-skidding fixed effect, prevent that frame 301 and probe 202 from taking place the sideslip.

The rack 301 is pressed downwards, the linear bearing 307 is pushed to move downwards when the rack 301 moves downwards, a limiting table 311 is arranged on the top of the guide rod 308 above the linear bearing 307, a clamping table 312 is arranged on the guide rod 308 below the linear bearing 307, a spring 313 is arranged on the guide rod 308 between the clamping table 312 and the linear bearing 307, and the spring 313 is compressed when the linear bearing 307 moves downwards.

When the machine frame 301 moves downwards, the sliding block 306 and the probe 202 are driven to move downwards together, and the probe 202 moves downwards and is in contact with the outer wall of the spiral welded pipe 1; the probe 202 is fixedly arranged at the bottom of the sliding block 306, the probe 202 is in contact with the spiral welded pipe 1, the servo motor 302 is started, the screw 303 is driven to rotate together when the servo motor 302 rotates, and the sliding block 306 is driven to slide on the guide plate 305 when the screw 303 rotates; the servo motor 302 rotates back and forth, so that the slide block 306 can be driven to reciprocate left and right, and the probe 202 can reciprocate on the spiral welded pipe 1 to detect flaws.

When the position is transferred, the rack 301 is loosened, the spring 313 pushes the linear bearing 307, the rack 301 and the probe 202 to be lifted under the action of the elastic force of the spring 313, the rack 301 is moved to another detection position, the rack 301 is pressed down, and the probe 202 automatically reciprocates on the spiral welded pipe 1 to perform flaw detection.

In conclusion, when the flaw detection position is detected, the rack 301 is placed at the detection position, the horizontal rod 309 at the bottom of the rack 301 is used for positioning the transverse detection position of the probe 202, the rack 301 is pressed downwards, the probe 202 can be pressed on the spiral welded pipe 1, after the servo motor 302 is started, the servo motor 302 drives the probe 202 to reciprocate left and right at the detection position through the screw 303 and the sliding block 306 to perform detection, the manual operation of pushing the probe 202 to reciprocate is replaced, and the detection efficiency is greatly improved; the probe 202 is positioned by the support frame, the probe 202 moves stably, the phenomena of deviation, separation from a detection position and the like cannot occur, and the detection precision is high.

The control mode of the utility model is automatically controlled by the controller, the control circuit of the controller can be realized by simple programming of a person skilled in the art, the utility model belongs to the common knowledge in the field, and the utility model is mainly used for protecting mechanical devices, so the control mode and the circuit connection are not explained in detail in the utility model.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the utility model and are not to be construed as limiting the utility model. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a spiral welded tube welding seam inspection device that detects a flaw which characterized in that: comprises a spiral welded pipe (1), a flaw detector (2) and an automatic reciprocating flaw detector (3); the automatic reciprocating flaw detection device (3) is arranged on the spiral welded pipe (1); a cable (201) is arranged on one side of the flaw detector (2); the other end of the cable (201) is provided with a probe (202); the probe (202) is arranged on the automatic reciprocating flaw detection device (3); the automatic reciprocating flaw detection device (3) comprises a rack (301), a servo motor (302), a screw (303) and a positioning frame (304); the screw (303) is arranged in the middle of the rack (301); the servo motor (302) is fixedly arranged on one side of the rack (301) and is used for driving the screw rod (303) to rotate; a guide plate (305) is arranged below the rack (301); a sliding block (306) is connected on the guide plate (305) in a sliding way; the upper part of the sliding block (306) is in threaded connection with the screw rod (303); the positioning frames (304) are arranged on the front side and the rear side of the rack (301).

2. The spiral welded pipe weld seam flaw detection device according to claim 1, characterized in that: the probe (202) is fixedly arranged at the bottom of the sliding block (306); the probe (202) is in contact with the spiral welded pipe (1).

3. The spiral welded pipe weld seam flaw detection device according to claim 1, characterized in that: linear bearings (307) are fixedly arranged on the front side and the rear side of the frame (301); guide rods (308) are arranged above two sides of the positioning frame (304); the guide rod (308) is connected to the linear bearing (307) in a penetrating and sliding manner; a horizontal rod (309) is arranged below the positioning frame (304) in the horizontal direction; the horizontal rod (309) is arranged on the spiral welded pipe (1).

4. The spiral welded pipe weld seam flaw detection device according to claim 3, characterized in that: and an anti-skid rubber sleeve (310) is arranged on the horizontal rod (309).

5. The spiral welded pipe weld seam flaw detection device according to claim 3, characterized in that: a limiting table (311) is arranged above the linear bearing (307) and at the top of the guide rod (308); a clamping table (312) is arranged on the guide rod (308) below the linear bearing (307); a spring (313) is arranged on the guide rod (308) between the clamping table (312) and the linear bearing (307).