Phased array detection device for transverse defects in welds

Abstract

The present application relates to the technical field of boiler pipeline welds, and in particular to a phased array detection device for transverse defects in welds, comprising a base rod, a connecting ring, a first probe and a second probe, wherein the connecting ring is connected to the outside of the pipeline, and a guide rail is provided on the outer surface of the connecting ring, a guide block is connected to the surface of the base rod, and the guide block is slidably connected in the guide rail, a first slide groove and a second slide groove are provided on the surface of the base rod, a first slider is slidably connected in the first slide groove, and a second slider is slidably connected in the second slide groove, the first slider is rotatably connected to a first clamping frame, the first clamping frame is connected to the first probe, the second slider is rotatably connected to a second clamping frame, and the second clamping frame is connected to the second probe, so as to achieve the effect of adjusting the refraction angle of laser emitted by the probe.

Description

Technical Field

[0001] The present application relates to the technical field of boiler pipeline weld detection, and in particular to a phased array detection device for transverse defects in welds. Background Art

[0002] Transverse cracks may occur in the pipe welds during the installation and operation of the boiler in a thermal power plant.

[0003] At present, the main methods for detecting internal and external defects of small-diameter pipe welds are radiographic testing and ultrasonic testing, but radiographic testing has disadvantages such as low efficiency, large influence of crack detection rate and penetration angle, and great harm of radiation. For ultrasonic testing of transverse defects, the selected probe can only obtain a fixed single refraction angle for a single excitation, with a small scanning range, low efficiency, and low sensitivity. Transverse defects are easy to be missed, which may cause major safety accidents. Summary of the invention

[0004] In order to adjust the refraction angle of laser emitted by a probe, the present application provides a phased array detection device for transverse defects of welds.

[0005] The above technical objectives of this application are achieved through the following technical solutions:

[0006] The invention discloses a phased array detection device for transverse defects of welds, comprising a base rod, a connecting ring, a first probe and a second probe, wherein the connecting ring is connected to the outside of a pipeline, and a guide rail is provided on the outer surface of the connecting ring, a guide block is connected to the surface of the base rod, and the guide block is slidably connected in the guide rail, a first slide groove and a second slide groove are provided on the surface of the base rod, a first slider is slidably connected in the first slide groove, and a second slider is slidably connected in the second slide groove, the first slider is rotatably connected to a first clamping frame, the first clamping frame is connected to the first probe, the second slider is rotatably connected to a second clamping frame, and the second clamping frame is connected to the second probe.

[0007] By adopting the above scheme, when checking the transverse missing parts of the pipeline, the connecting ring is fixed on the outside of the pipeline, and then the first probe emits ultrasonic waves, the ultrasonic waves enter the inside of the weld, and then the ultrasonic waves are reflected to the second probe. Then the operator can move the base rod to move the base rod along the connecting ring, so as to detect the weld. The distance between the first probe and the second probe can be adjusted by sliding the first slider in the first slide groove and the second slider in the second slide groove. Since the first slider and the first clamping frame are rotatably connected, the clamping frame can be rotated to adjust the angle of the first probe, so as to achieve the purpose of adjusting the probe angle, so that the refraction angle of the laser emitted by the probe can be adjusted, and then the first probe emits ultrasonic waves, the ultrasonic waves hit the weld and are reflected to the second probe, so as to realize the detection of the weld, and the scanning range is increased by adjusting the distance and angle between the probe and the weld to avoid major safety accidents.

[0008] Optionally, the base rod is rotatably connected to a bidirectional lead screw, which passes through the first slide groove and the second slide groove in sequence. Threaded holes are provided on the surfaces of the first slider and the second slider, and the thread directions of the threaded holes of the first slider and the second slider are opposite. The first slider and the second slider are both threadedly connected to the bidirectional lead screw.

[0009] By adopting the above scheme, the operator can control the distance between the first slider and the weld and the distance between the second slider and the weld by rotating the bidirectional screw. In addition, the first probe and the second probe can be moved synchronously so that the distances between the first probe and the second probe and the weld are equal, so that the ultrasonic wave emitted by the first probe can hit the weld and be received by the second probe.

[0010] Optionally, the first clamping frame and the second clamping frame are both rotatably connected with a sliding sleeve, the rotation axis of the first clamping frame and the first slider is parallel to the rotation axis of the first clamping frame and the sliding sleeve, the rotation axis of the second clamping frame and the second slider is parallel to the rotation axis of the second clamping frame and the sliding sleeve, and the two sliding sleeves are slidably connected with the same sliding rod.

[0011] By adopting the above scheme, when it is necessary to adjust the angle of the first probe and the second probe, the sliding rod can be moved to make the sliding rod approach or move away from the connecting line between the rotating shaft of the first clamping frame and the first slider and the rotating shaft of the second clamping frame and the second slider, thereby driving the sliding sleeve to slide on the sliding rod, thereby driving the first clamping frame and the second clamping frame to rotate simultaneously, thereby driving the first probe and the second probe to rotate simultaneously, and the angle between the first probe and the weld is the same as the angle between the second probe and the weld, so that the ultrasonic wave emitted by the first probe can hit the weld and be reflected to the second probe and received by the second probe.

[0012] Optionally, the base rod is rotatably connected to a threaded rod, and the threaded rod is vertically connected to the base rod, the sliding rod is fixedly connected to a threaded sleeve, and the threaded rod passes through the threaded sleeve and is threadedly connected to the threaded sleeve.

[0013] By adopting the above scheme, when it is necessary to adjust the angle of the first probe and the second probe, the threaded rod can be rotated to make the threaded sleeve move along the threaded rod, thereby driving the sliding rod to move, thereby mobilizing the first probe and the second probe to rotate. In addition, the threaded connection between the threaded rod and the threaded sleeve has a self-locking function, so that the angle of the first probe and the second probe is fixed, thereby avoiding the first probe and the second probe from rotating during the measurement process, which causes errors in the measurement results.

[0014] Optionally, a scale is provided on the surface of the base rod for facilitating an operator to observe the distance between the two probes. The first slider is connected to a pointer, the first clamping frame is connected to an angle scale for indicating the angle between the first probe and the normal line, the second slider is connected to a pointer, and the second clamping frame is connected to an angle scale for indicating the angle between the second probe and the normal line.

[0015] By adopting the above solution, the operator can more conveniently observe the distance between the two probes, and the operator can make the distance between the first probe and the second probe and the weld equal, so as to facilitate the adjustment of the angle between the first probe and the second probe, so that the ultrasonic wave generated by the first probe hits the weld and is rebounded to the second probe. The operator can more clearly observe the rotation angle of the first probe and the second probe, so that the operator can more conveniently adjust the angle of the first probe and the second probe.

[0016] Optionally, both the first probe and the second probe are connected with wedges for fitting with the pipeline.

[0017] By adopting the above solution, the probe and the pipeline are fitted more closely, so that the distance between the probe and the pipeline remains unchanged, making the detection result more accurate.

[0018] Optionally, the wedge block is detachable, and there are multiple types of wedge blocks, so as to be suitable for simultaneous use of the first probe and the second probe at different angles.

[0019] By adopting the above solution, the wedge block can still be used smoothly after the angles of the first probe and the second probe are adjusted.

[0020] Optionally, the connecting ring includes two semicircular parts, the ends of the semicircular parts are provided with bolt seats for connecting bolts, the two semicircular parts are sleeved on the outside of the pipe, the bolts pass through the bolt seats of the two semicircular parts, and then the bolts are tightened with nuts to fix the two semicircular parts.

[0021] By adopting the above solution, the installation of the connecting ring is more convenient, thereby making the detection of transverse defects in the weld more convenient.

[0022] Optionally, pin grooves are provided on opposite sides of the frame of the first clamping frame, a locking pin is slidably connected inside the pin groove, and a pin spring is connected inside the pin groove, the locking pin is inclined away from one end of the pin spring, and the inclined surface is away from the first sliding block, and slots are provided on opposite sides of the first probe, when the first clamping frame and the second clamping frame are connected, the locking pin is inserted into the slot, an inclined slot is provided on the surface of the locking pin, and a transmission cavity is provided inside the first clamping frame, the transmission cavity connects the two pin grooves and the surface of the first clamping frame close to the first sliding block, a U-shaped rod is slidably connected in the transmission cavity, and both ends of the U-shaped rod are inclined, when the U-shaped rod slides in the direction close to the locking pin, the end of the U-shaped rod is inserted into the inclined slot, and drives the locking pin to slide completely into the slot, and the U-shaped rod is fixedly connected to a pressure rod, one end of the pressure rod is located on the side of the first clamping frame close to the first sliding block, a pressing spring is provided on the outer side of the pressure rod, and the pressing spring is located in the transmission cavity.

[0023] By adopting the above scheme, when the first probe needs to be fixed to the first clamping frame, the first probe is slid into the first clamping frame, and the first probe presses the bayonet pin into the pin groove until the first probe completely enters the clamping frame. At this time, the slot and the bayonet pin are aligned, and the pin spring rebounds to drive the bayonet pin to be inserted into the slot, thereby fixing the first probe. When the first probe needs to be removed, the pressure rod is pressed to drive the U-shaped rod to be inserted into the inclined groove, so that the bayonet pin completely slides into the pin groove, thereby releasing the fixation of the first probe, so that the first probe can be removed.

[0024] Optionally, pin grooves are provided on opposite sides of the second clamping frame, and a latch pin is slidably connected inside the pin groove, and a pin spring is connected inside the pin groove, the latch pin is inclined away from one end of the pin spring, and the inclined surface is away from the second sliding block, and slots are provided on opposite sides of the second probe. When the second clamping frame and the second clamping frame are connected, the latch pin is inserted into the slot, and an inclined slot is provided on the surface of the latch pin. A transmission cavity is provided inside the second clamping frame, and the transmission cavity connects the two pin grooves and the surface of the second clamping frame close to the second sliding block. A U-shaped rod is slidably connected in the transmission cavity, and both ends of the U-shaped rod are inclined. When the U-shaped rod slides in the direction close to the latch pin, the end of the U-shaped rod is inserted into the inclined slot and drives the latch pin to slide completely into the slot, and the U-shaped rod is fixedly connected to a pressure rod, one end of the pressure rod is located on the side of the second clamping frame close to the second sliding block, and a pressing spring is provided on the outer side of the pressure rod, and the pressing spring is located in the transmission cavity.

[0025] By adopting the above scheme, when the second probe needs to be fixed to the second clamping frame, the second probe is slid into the second clamping frame, and the second probe presses the bayonet pin into the pin groove until the second probe completely enters the clamping frame. At this time, the slot and the bayonet pin are aligned, and the pin spring rebounds to drive the bayonet pin to be inserted into the slot, thereby fixing the second probe. When the second probe needs to be removed, the pressure rod is pressed to drive the U-shaped rod to be inserted into the inclined groove, so that the bayonet pin completely slides into the pin groove, thereby releasing the fixation of the second probe, so that the second probe can be removed.

[0026] In summary, this application has the following technical effects:

[0027] 1. By setting a base rod, setting a first slider and a second slider to be slidably connected with the base rod, the distance between the first probe and the second probe and the weld can be adjusted. At the same time, since the first clamping frame is rotatably connected with the first slider and the second clamping frame is rotatably connected with the second slider, the angle between the first probe and the second probe and the weld can be adjusted, thereby adjusting the scanning range and scanning effect of the detection device;

[0028] 2. By setting up a bidirectional lead screw, the operator can synchronously control the distance between the first probe and the weld and the distance between the second probe and the weld, making it more convenient to adjust the scanning range of the detection device;

[0029] 3. By providing a sliding rod and a sliding sleeve, the operator can synchronously adjust the angles of the first probe and the second probe, making it more convenient to adjust the scanning range of the detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of this application;

[0031] Figure 2 This application intends to emphasize the structural diagram of the first chute;

[0032] Figure 3 This is a schematic diagram of the structure of the slide bar that this application intends to emphasize;

[0033] Figure 4 This application is intended to emphasize the partial structural cross-sectional view of the latch.

[0034] In the figure, 1, connecting ring; 11, guide rail; 2, base rod; 21, guide block; 22, first slide groove; 221, first slider; 23, second slide groove; 231, second slider; 24, bidirectional screw; 3, first clamping frame; 4, second clamping frame; 5, first probe; 6, second probe; 7, wedge; 8, threaded rod; 81, threaded sleeve; 82, slide rod; 83, slide sleeve; 9, bayonet pin; 91, pin groove; 92, bayonet groove; 93, pin spring; 94, transmission chamber; 95, U-shaped rod; 96, pressure rod; 961, pressing spring; 97, inclined groove. DETAILED DESCRIPTION

[0035] The present application is further described in detail below with reference to the accompanying drawings.

[0036] Reference Figure 1The invention discloses a phased array detection device for transverse defects of welds, comprising a base rod 2, a connecting ring 1, a first probe 5 and a second probe 6. The connecting ring 1 is connected to the outside of the pipeline, and a guide rail 11 is provided on the outer surface of the connecting ring 1. A guide block 21 is connected to the surface of the base rod 2. The guide block 21 is slidably connected in the guide rail 11. A first slide groove 22 and a second slide groove 23 are provided on the surface of the base rod 2. A first slider 221 is slidably connected in the first slide groove 22. A second slider 231 is slidably connected in the second slide groove 23. The first slider 221 is rotatably connected to a first clamping frame 3. The first clamping frame 3 is connected to the first probe 5. The second slider 231 is rotatably connected to a second clamping frame 4. The second clamping frame 4 is connected to the second probe 6. When inspecting the transverse missing parts of the pipeline, the connecting ring 1 is fixed to the outside of the pipeline, and then the first probe 5 emits ultrasonic waves, which enter the inside of the weld and are then reflected to the second probe 6. The operator can then move the base rod 2 to move the base rod 2 along the connecting ring 1, thereby detecting the weld. The distance between the first probe 5 and the second probe 6 can be adjusted by sliding the first slider 221 in the first slide groove 22 and the second slider 231 in the second slide groove 23. Since the first slider 221 and the first clamping frame 3 are rotatably connected, the clamping frame can be rotated to adjust the angle of the first probe 5, thereby achieving the purpose of adjusting the probe angle, so that the refraction angle of the laser emitted by the probe can be adjusted. Then the first probe 5 emits ultrasonic waves, which hit the weld and are reflected to the second probe 6, thereby realizing the detection of the weld. The scanning range is increased by adjusting the distance and angle between the probe and the weld to avoid major safety accidents.

[0037] Reference Figure 1 and Figure 2 The connecting ring 1 includes two semicircular parts, and the ends of the semicircular parts are provided with bolt seats for connecting bolts. The two semicircular parts are sleeved on the outside of the pipe, and the bolts are passed through the bolt seats of the two semicircular parts, and then the bolts are tightened by nuts to fix the two semicircular parts. This makes the installation of the connecting ring 1 more convenient, thereby making the detection of transverse defects in the weld more convenient.

[0038] The base rod 2 is rotatably connected with a bidirectional lead screw 24, which passes through the first slide groove 22 and the second slide groove 23 in sequence. The first slider 221 and the second slider 231 are both provided with threaded holes on their surfaces, and the threaded directions of the threaded holes of the first slider 221 and the second slider 231 are opposite. The first slider 221 and the second slider 231 are both threadedly connected with the bidirectional lead screw 24. The operator can control the distance between the first slider 221 and the weld and the distance between the second slider 231 and the weld by rotating the bidirectional lead screw 24. In addition, the first probe 5 and the second probe 6 are synchronously moved, so that the distances between the first probe 5 and the second probe 6 and the weld are equal, so that the ultrasonic wave emitted by the first probe 5 can hit the weld and be received by the second probe 6.

[0039] Reference Figure 2 and Figure 3 , the first clamping frame 3 and the second clamping frame 4 are both rotatably connected with a sliding sleeve 83, the rotating shaft of the first clamping frame 3 and the first slider 221 is parallel to the rotating shaft of the first clamping frame 3 and the sliding sleeve 83, the rotating shaft of the second clamping frame 4 and the second slider 231 is parallel to the rotating shaft of the second clamping frame 4 and the sliding sleeve 83, and the two sliding sleeves 83 are slidably connected with the same sliding rod 82. The base rod 2 is rotatably connected with a threaded rod 8, and the threaded rod 8 is vertically connected to the base rod 2, and the sliding rod 82 is fixedly connected with a threaded sleeve 81, and the threaded rod 8 passes through the threaded sleeve 81 and is threadedly connected with the threaded sleeve 81. When it is necessary to adjust the angle of the first probe 5 and the second probe 6, the threaded rod 8 can be rotated to make the threaded sleeve 81 move along the threaded rod 8, thereby driving the sliding rod 82 to move, thereby mobilizing the first probe 5 and the second probe 6 to rotate. In addition, the threaded connection between the threaded rod 8 and the threaded sleeve 81 has a self-locking function, so that the angle of the first probe 5 and the second probe 6 is fixed, and the first probe 5 and the second probe 6 are prevented from rotating during the measurement process, resulting in errors in the measurement results.

[0040] Reference Figure 2 and Figure 3 , the surface of the base rod 2 is provided with a scale for the operator to observe the distance between the two probes. The first slider 221 is connected with a pointer, the first clamping frame 3 is connected with an angle scale for indicating the angle between the first probe 5 and the normal line, the second slider 231 is connected with a pointer, and the second clamping frame 4 is connected with an angle scale for indicating the angle between the second probe 6 and the normal line. It enables the operator to observe the distance between the two probes more conveniently, and it is convenient for the operator to make the distance between the first probe 5 and the second probe 6 and the weld seam equal, so as to facilitate the adjustment of the angle between the first probe 5 and the second probe 6, so that the ultrasonic wave generated by the first probe 5 hits the weld seam and is rebounded to the second probe 6. It enables the operator to observe the rotation angle of the first probe 5 and the second probe 6 more clearly, and it is more convenient for the operator to adjust the angle of the first probe 5 and the second probe 6.

[0041] Reference Figure 2 The first probe 5 and the second probe 6 are both connected with a wedge 7 for fitting with the pipeline. The wedge 7 is detachable. The wedge 7 is fixed to the first probe 5 and the second probe 6 by bolts. There are multiple types of wedges 7, which are used to be used when the first probe 5 and the second probe 6 have different angles. The probe and the pipeline are fitted more closely, so that the distance between the probe and the pipeline remains unchanged, and the detection result is more accurate.

[0042] Reference Figure 4, the first clamping frame 3 has pin grooves 91 on both sides thereof, a bayonet 9 is slidably connected to the inside of the pin groove 91, and a pin spring 93 is connected to the inside of the pin groove 91, and the end of the bayonet 9 that is away from the pin spring 93 is inclined, and the inclined surface is away from the first slider 221, and the first probe 5 has slots 92 on both sides thereof. When the first clamping frame 3 and the second clamping frame 4 are connected, the bayonet 9 is inserted into the bayonet 92, and an inclined groove 97 is formed on the surface of the bayonet 9, and a transmission cavity 94 is formed inside the first clamping frame 3, and the transmission cavity 94 connects the two pin grooves 91 and the first A clamping frame 3 is connected to the surface of one side close to the first slider 221, and a U-shaped rod 95 is slidably connected in the transmission cavity 94, and the two ends of the U-shaped rod 95 are inclined. When the U-shaped rod 95 slides toward the direction close to the bayonet 9, the end of the U-shaped rod 95 is inserted into the inclined groove 97, and drives the bayonet 9 to slide completely into the slot 92. The U-shaped rod 95 is fixedly connected to a pressure rod 96, one end of the pressure rod 96 is located on the side of the first clamping frame 3 close to the first slider 221, and a pressing spring 961 is sleeved on the outside of the pressure rod 96, and the pressing spring 961 is located in the transmission cavity 94. When it is necessary to fix the first probe 5 to the first clamping frame 3, the first probe 5 is slid into the first clamping frame 3, and the first probe 5 presses the bayonet 9 into the pin groove 91 until the first probe 5 is completely entered into the clamping frame. At this time, the slot 92 and the bayonet 9 are aligned, and the pin spring 93 rebounds to drive the bayonet 9 to be inserted into the slot 92, thereby fixing the first probe 5. When it is necessary to remove the first probe 5, the pressure rod 96 is pressed to drive the U-shaped rod 95 to be inserted into the inclined groove 97, so that the bayonet 9 is completely slid into the pin groove 91, thereby releasing the fixation of the first probe 5, so that the first probe 5 can be removed.

[0043] Reference Figure 4, the second clamping frame 4 has pin grooves 91 on both sides thereof, a bayonet 9 is slidably connected to the inside of the pin groove 91, and a pin spring 93 is connected to the inside of the pin groove 91, the bayonet 9 is inclined away from the pin spring 93 at one end thereof, and the inclined surface is away from the second slider 231, and the second probe 6 has slots 92 on both sides thereof, when the second clamping frame 4 is connected to the second clamping frame 4, the bayonet 9 is inserted into the bayonet 92, and an inclined surface groove 97 is provided on the surface of the bayonet 9, and a transmission cavity 94 is provided inside the second clamping frame 4, and the transmission cavity 94 connects the two pin grooves 91 and the first The surfaces of the two clamping frames 4 close to the second slider 231 are connected, and a U-shaped rod 95 is slidably connected in the transmission cavity 94, and the two ends of the U-shaped rod 95 are inclined. When the U-shaped rod 95 slides toward the direction close to the bayonet 9, the end of the U-shaped rod 95 is inserted into the inclined groove 97, and drives the bayonet 9 to slide completely into the slot 92. The U-shaped rod 95 is fixedly connected to a pressure rod 96, one end of the pressure rod 96 is located on the side of the second clamping frame 4 close to the second slider 231, and a pressing spring 961 is sleeved on the outside of the pressure rod 96, and the pressing spring 961 is located in the transmission cavity 94. When it is necessary to fix the second probe 6 to the second clamping frame 4, slide the second probe 6 into the second clamping frame 4, and the second probe 6 presses the bayonet 9 into the pin groove 91 until the second probe 6 completely enters the clamping frame. At this time, the slot 92 and the bayonet 9 are aligned, and the pin spring 93 rebounds to drive the bayonet 9 to insert into the slot 92, thereby fixing the second probe 6. When it is necessary to remove the second probe 6, press the pressure rod 96 to drive the U-shaped rod 95 to insert into the inclined groove 97, so that the bayonet 9 slides completely into the pin groove 91, thereby releasing the fixation of the second probe 6 and allowing the second probe 6 to be removed.

[0044] The specific implementation principle of the present application is as follows: when inspecting the transverse missing parts of the pipeline, the connecting ring 1 is fixed to the outside of the pipeline, and then the first probe 5 emits ultrasonic waves, which enter the inside of the weld and are then reflected to the second probe 6. Then the operator can move the base rod 2 to move the base rod 2 along the connecting ring 1, thereby detecting the weld, and then rotate the bidirectional lead screw 24 to make the first slider 221 slide in the first slide groove 22, and the second slider 231 slide in the second slide groove 23, thereby adjusting the distance between the first probe 5 and the second probe 6, and then the threaded rod 8 can be rotated to drive the clamping frame to rotate to adjust the angle of the first probe 5, thereby achieving the purpose of adjusting the probe angle, so that the refraction angle of the laser emitted by the probe can be adjusted, and then the first probe 5 emits ultrasonic waves, which hit the weld and are reflected to the second probe 6, thereby realizing the detection of the weld, and the scanning range is increased by adjusting the distance and angle between the probe and the weld to avoid major safety accidents.

[0045] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make modifications to the present embodiment without any creative contribution as needed, but such modifications are protected by the patent law as long as they are within the scope of the claims of the present application.

Claims

1. Phased array detection device for transverse defects of welds, characterized by: The invention comprises a base rod (2), a connecting ring (1), a first probe (5) and a second probe (6); the connecting ring (1) is connected to the outside of the pipeline, and a guide rail (11) is provided on the outer surface of the connecting ring (1); a guide block (21) is connected to the surface of the base rod (2); the guide block (21) is slidably connected in the guide rail (11); a first sliding groove (22) and a second sliding groove (23) are provided on the surface of the base rod (2); a first sliding block (221) is slidably connected in the first sliding groove (22); a second sliding block (231) is slidably connected in the second sliding groove (23); the first sliding block (221) is rotatably connected to a first clamping frame (3); the first clamping frame (3) is connected to the first probe (5); the second sliding block (231) is rotatably connected to a second clamping frame (4); and the second clamping frame (4) is connected to the second probe (6); The first clamping frame (3) and the second clamping frame (4) are both rotatably connected to a sliding sleeve (83); the rotation axis of the first clamping frame (3) and the first slider (221) is parallel to the rotation axis of the first clamping frame (3) and the sliding sleeve (83); the rotation axis of the second clamping frame (4) and the second slider (231) is parallel to the rotation axis of the second clamping frame (4) and the sliding sleeve (83); and the two sliding sleeves (83) are slidably connected to the same sliding rod (82); The base rod (2) is rotatably connected to a threaded rod (8), and the threaded rod (8) is vertically connected to the base rod (2). The sliding rod (82) is fixedly connected to a threaded sleeve (81), and the threaded rod (8) passes through the threaded sleeve (81) and is threadedly connected to the threaded sleeve (81).

2. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The base rod (2) is rotatably connected to a bidirectional lead screw (24), which passes through the first slide groove (22) and the second slide groove (23) in sequence. The surfaces of the first slider (221) and the second slider (231) are both provided with threaded holes, and the threaded directions of the threaded holes of the first slider (221) and the second slider (231) are opposite. The first slider (221) and the second slider (231) are both threadedly connected to the bidirectional lead screw (24).

3. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The surface of the base rod (2) is provided with a scale for facilitating an operator to observe the distance between the two probes; the first slider (221) is connected to a pointer; the first clamping frame (3) is connected to an angle scale for indicating the angle between the first probe (5) and the normal; the second slider (231) is connected to a pointer; and the second clamping frame (4) is connected to an angle scale for indicating the angle between the second probe (6) and the normal.

4. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The first probe (5) and the second probe (6) are both connected to a wedge block (7) for fitting with the pipeline.

5. The phased array detection device for transverse defects of welds according to claim 4, characterized in that: The wedge block (7) is detachable, and there are multiple types of wedge blocks (7) for use when the first probe (5) and the second probe (6) have different included angles.

6. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The connecting ring (1) comprises two semicircular parts, the ends of which are provided with bolt seats for connecting bolts. The two semicircular parts are sleeved on the outside of the pipeline, and bolts are passed through the bolt seats of the two semicircular parts. The bolts are then tightened with nuts to fix the two semicircular parts.

7. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The first clamping frame (3) is provided with pin grooves (91) on opposite sides thereof, a bayonet (9) is slidably connected inside the pin groove (91), and a pin spring (93) is connected inside the pin groove (91), and the bayonet (9) is inclined at one end away from the pin spring (93), and the inclined surface is away from the first slider (221), and the first probe (5) is provided with slots (92) on opposite sides thereof, and when the first clamping frame (3) and the second clamping frame (4) are connected, the bayonet (9) is inserted into the slot (92), and an inclined surface groove (97) is provided on the surface of the bayonet (9), and a transmission cavity (94) is provided inside the first clamping frame (3), and the transmission cavity (94) connects the two pin grooves (91) and The surface of the first clamping frame (3) close to the first slider (221) is connected, and a U-shaped rod (95) is slidably connected in the transmission chamber (94), and the two ends of the U-shaped rod (95) are inclined. When the U-shaped rod (95) slides in a direction close to the bayonet (9), the end of the U-shaped rod (95) is inserted into the inclined groove (97) and drives the bayonet (9) to completely slide into the bayonet groove (92). The U-shaped rod (95) is fixedly connected to a pressure rod (96), one end of the pressure rod (96) is located on the side of the first clamping frame (3) close to the first slider (221), and a pressing spring (961) is sleeved on the outer side of the pressure rod (96), and the pressing spring (961) is located in the transmission chamber (94).

8. The phased array detection device for transverse defects of welds according to claim 1, characterized in that: The second clamping frame (4) is provided with pin grooves (91) on opposite sides thereof, a bayonet (9) is slidably connected inside the pin groove (91), and a pin spring (93) is connected inside the pin groove (91), and the bayonet (9) is inclined away from the pin spring (93), and the inclined surface is away from the second slider (231), and the second probe (6) is provided with slots (92) on opposite sides thereof, and when the second clamping frame (4) is connected to the second clamping frame (4), the bayonet (9) is inserted into the slot (92), and an inclined groove (97) is provided on the surface of the bayonet (9), and a transmission cavity (94) is provided inside the second clamping frame (4), and the transmission cavity (94) connects the two pin grooves (91) and The second clamping frame (4) is connected to the surface of the second slider (231), and a U-shaped rod (95) is slidably connected in the transmission chamber (94), and the two ends of the U-shaped rod (95) are inclined. When the U-shaped rod (95) slides in a direction close to the latch pin (9), the end of the U-shaped rod (95) is inserted into the inclined groove (97) and drives the latch pin (9) to completely slide into the latch groove (92). The U-shaped rod (95) is fixedly connected to a pressure rod (96), one end of the pressure rod (96) is located on the side of the second clamping frame (4) close to the second slider (231), and a pressing spring (961) is sleeved on the outer side of the pressure rod (96), and the pressing spring (961) is located in the transmission chamber (94).

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