A chip array angle-adjustable phased array ultrasonic probe and its assembly and detection method

Abstract

The present invention discloses a chip array angle-adjustable phased array ultrasonic probe and its assembly and detection method, the probe includes a probe base and a wedge block, the probe base includes a probe housing, a locking device, a chip array module, a connecting shaft, a coupling agent conduit and a probe cable; the probe housing is used to install the chip array module; the wedge block is a trapezoidal body as a whole, and the lower part is processed into a curved surface, and its curvature matches the curvature of the inspected pipeline; the probe base and the wedge block are connected by connecting screws. The present invention can be used in conjunction with a phased array ultrasonic detector to quickly and efficiently perform non-destructive testing on the internal quality of small and medium diameter pipeline welding joints, and is particularly suitable for phased array detection of small diameter stainless steel pipe welding joints. The present invention is provided with an ultrasonic coupling agent diversion channel, and the coupling agent can be continuously and accurately supplied to the detection surface between the workpiece and the probe when the probe moves, and the coupling agent is used in a small amount and has good uniformity.

Description

Technical Field

[0001] The invention relates to a novel phased array ultrasonic probe and an assembly and detection method thereof, belonging to the technical field of ultrasonic detection. Background Art

[0002] Phased array ultrasonic probes use a composite chip array with multiple chips integrated to transmit, receive and convert sound waves. Different from the single chip probes used in conventional ultrasonic testing technology, they have the characteristics of flexible and controllable sound beam deflection and focusing, high sensitivity, and large amount of data information collection. Due to the high integration and precision of the components of phased array probes, phased array probes are difficult to manufacture and expensive. At present, phased array detection of small and medium diameter pipeline welding joints usually uses self-focusing phased array probes. According to the specifications and materials of the inspected pipelines, probes with corresponding frequencies and chip array angles are selected for detection. Since the materials of the inspected workpieces are different and their organizational structures are also different, there are differences in the deflection and focusing of the phased array sound beam in them. Therefore, the optimal sound beam incident angle required for each material is not the same, especially when testing austenitic stainless steel small diameter pipes. In order to obtain the best sound beam incident angle, it is necessary to select the corresponding chip array angle. Phased array probes of various specifications need to be prepared for on-site detection, which greatly increases the detection cost and reduces the detection efficiency. By searching the existing phased array probe patents, it was found that there are many types of probe chip arrays and layouts, but no patents for phased array probes with adjustable chip array angles were found. When conducting phased array ultrasonic testing on site, coupling agent must first be applied between the workpiece and the probe. Inspectors usually manually apply the coupling agent to the surface of the inspected workpiece, and then apply it again if insufficient coupling is found during the inspection. The existing method uses a large amount of coupling agent during testing, and the uniformity of the coupling agent application is poor. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a chip array angle-adjustable phased array ultrasonic probe and its assembly and detection method in view of the defects in the prior art, so as to solve the problem that the probe chip array in the prior art is fixed and cannot be adjusted according to the detection requirements.

[0004] In order to solve this technical problem, the present invention provides a chip array angle-adjustable phased array ultrasonic probe, including a probe base and a wedge block, wherein the probe base includes a probe housing, a locking device, a chip array module, a connecting shaft, a coupling agent conduit and a probe cable; the probe housing is a trapezoidal body as a whole, and its front end is a fan-shaped cavity for installing the chip array module, and the chip array module is fixed to the front end of the probe housing through the connecting shaft and can rotate smoothly around the connecting shaft in the fan-shaped cavity at the front end of the probe housing; a cube cavity protrudes from the rear end of the probe housing and leaves a circular hole, through which the probe cable passes The probe cable is fixed in the hole by filling solid glue; a dovetail groove guide rail is arranged at the center of the upper part of the probe shell, and the locking device is installed on the guide rail, and can slide forward and backward along the guide rail to drive the movement of the locking pin to realize the locking and unlocking of the damping body; two circular channels are symmetrically arranged at the lower part of the probe shell, and two coupling agent conduits penetrate the entire probe shell and are installed inside the circular channels; the connecting shaft is installed at the lower part of the outer side of the probe shell; the wedge block is a trapezoidal body as a whole, and the lower part is processed into a curved surface, and its curvature matches the curvature of the inspected pipeline; the probe base and the wedge block are connected by two symmetrically arranged connecting screws.

[0005] The probe housing is made of aluminum alloy as a whole, serving as a probe base frame to fix various components and provide protection for internal components.

[0006] The chip array module comprises a damping body, a chip array, a rectangular groove and a chip cable arrangement. The damping body is in the shape of a fan, and a plurality of rectangular grooves are arranged on its upper curved surface. The size of the rectangular groove matches the size of the locking pin. When the damping body moves to the locking pin position, each rectangular groove can ensure that the internal channel is parallel to the locking pin, and the locking pin can be smoothly inserted into the rectangular groove. A circular channel is arranged at the lower part of the damping body, and the connecting shaft passes through the center. The chip array is a rectangular plane as a whole, composed of 16 closely arranged rectangular piezoelectric chips, and is located at the front end of the damping body. Each rectangular piezoelectric chip is connected to a flexible cable for piezoelectric chip signal transmission, and the 16 cables are arranged in sequence to form a chip cable arrangement. A part of the chip cable arrangement close to the chip array is embedded in the damping body, and the rear half is stacked inside the probe base body and moves with the movement of the damping body. The rear end of the chip cable arrangement is connected to the probe cable. When the damping body is formed, the chip array and the chip cable arrangement are embedded in it to form a core unit for transmitting and receiving signals.

[0007] The damping body is made of a mixture of epoxy resin and tungsten powder through molding, and the damping body plays a damping role on the vibration of the chip array.

[0008] The front end of the wedge block is provided with a sound-absorbing material, the rear end is provided with a damping body groove and a screw hole, and the lower part thereof is provided with a coupling agent channel; the size of the damping body groove matches the size of the front end surface of the damping body, the part of the damping body protruding from the probe housing is completely immersed in the damping body groove, and the inner wall of the damping body groove contacts the chip array; there are two screw holes, which are symmetrically arranged on both sides of the wedge block, and the connecting screws are screwed into them to fasten the wedge block to the probe; the coupling agent channel is a curved channel, and its diameter is the same as the inner diameter of the coupling agent conduit. When the wedge block is connected to the probe, it forms an integral channel to guide the coupling agent transported from the coupling agent conduit to the contact surface between the wedge block and the workpiece.

[0009] The sound absorbing material is in the shape of a triangular prism and is made of rubber and is used to reduce the clutter signal of the phased array probe and improve the detection signal-to-noise ratio.

[0010] The locking device includes a locking pin, a locking body and a spring. The lower part of the locking body is a dovetail slider. The locking device is installed in the dovetail groove guide rail on the upper part of the probe housing through the dovetail slider and can slide back and forth in the dovetail groove guide rail. A rectangular locking pin is installed at the front end of the locking body, and the size of the locking pin matches the rectangular groove of the chip array module. When the chip array module rotates to a predetermined position around the connecting shaft, the locking pin is inserted into the rectangular groove on the upper part of the chip array module to limit the movement of the rectangular groove, thereby locking the chip array module. A cylindrical channel is set at the rear end of the locking body, and a spring is installed inside the channel. The spring provides thrust for the locking body in its natural state. A semicircular protrusion is set on the upper part of the locking body, and the forward and backward movement of the locking body can be realized by pushing the protrusion.

[0011] The present invention also provides a method for assembling the chip array angle-adjustable phased array ultrasonic probe, comprising the following steps:

[0012] (1) First, use the simulation function of the phased array ultrasonic detector or dedicated simulation software to perform simulation, comprehensively consider the specifications, materials, microstructure and other characteristics of the workpiece to determine the relevant detection parameters, and obtain the optimal incident angle, and then convert it to obtain the corresponding chip array angle;

[0013] (2) Move the locking body toward the spring side to compress the spring. At the same time, the probe drives the locking pin to move out of the corresponding rectangular groove until the two are separated.

[0014] (3) moving the damping body to change the angle between the chip array and the bottom surface of the probe housing so that the angle is equal to the chip array angle obtained by simulation;

[0015] (4) Slowly release the locking body, and the locking body moves forward under the push of the spring, driving the locking pin to insert into the corresponding rectangular groove, thereby locking the damping body and preventing it from rotating;

[0016] (5) Select a matching wedge. Two conditions should be met at the same time when selecting a wedge: the inclination angle of the chip array is the same as the inclination angle of the damping body groove; the curvature of the bottom surface of the wedge matches the curvature of the inspected pipe;

[0017] (6) Take an appropriate amount of engine oil or vaseline and apply it evenly on the surface of the damping body groove. Then assemble the probe and the wedge block so that the chip array is in close contact with the surface of the damping body groove. Finally, tighten the connecting screws on both sides into place. The probe assembly is completed.

[0018] The present invention also provides a detection method of the chip array angle-adjustable phased array ultrasonic probe, comprising the following steps:

[0019] 1) Connect the probe cable to the phased array ultrasonic detector, connect the probe coupling agent conduit to the coupling agent delivery pump outlet conduit with two rubber hoses, and place the phased array probe at the predetermined position of the workpiece to be inspected;

[0020] 2) While moving the probe, the coupling agent is evenly pumped to the contact surface between the wedge and the workpiece. The phased array ultrasonic detector synchronously displays the probe signal and the test data until the workpiece detection is completed.

[0021] Beneficial effects: The present invention can be used in conjunction with a phased array ultrasonic detector to quickly and efficiently perform nondestructive testing on the internal quality of small and medium diameter pipe weld joints, and is particularly suitable for phased array testing of small diameter stainless steel pipe weld joints. The present invention is provided with an ultrasonic coupling agent guide channel, and the coupling agent can be continuously and accurately supplied to the detection surface between the workpiece and the probe when the probe moves, with a small amount of coupling agent and good uniformity. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structural decomposition of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the probe substrate of the present invention;

[0024] Figure 3 It is a structural schematic diagram of the wedge block of the present invention;

[0025] Figure 4 It is a structural schematic diagram of the locking device of the present invention;

[0026] Figure 5 This is a schematic diagram of the chip array module structure of the present invention;

[0027] Figure 6 It is a schematic diagram of the appearance of the present invention;

[0028] Figure 7 It is a detection schematic diagram of the present invention.

[0029] In the figure: 1 probe base, 2 wedge, 3 connecting screw, 4 phased array ultrasonic detector, 5 coupling agent delivery pump, 6 inspected pipeline, 11 probe housing, 12 locking device, 13 chip array module, 14 connecting shaft, 15 coupling agent conduit, 16 probe cable, 21 damping body groove, 22 screw hole, 23 coupling agent channel, 24 sound absorbing material, 121 locking pin, 122 locking body, 123 spring, 131 damping body, 132 chip array, 133 rectangular groove, 134 chip cable arrangement. DETAILED DESCRIPTION

[0030] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0031] Figure 1 Shown is a schematic diagram of the structural decomposition of the present invention.

[0032] Figure 2 Shown is a schematic structural diagram of the probe base of the present invention.

[0033] Figure 6 Shown is a schematic diagram of the appearance of the present invention.

[0034] The present invention provides a chip array angle-adjustable phased array ultrasonic probe, comprising a probe base 1 and a wedge 2, wherein the probe base 1 comprises a probe housing 11, a locking device 12, a chip array module 13, a connecting shaft 14, a coupling agent conduit 15 and a probe cable 16; the probe housing 11 is a trapezoidal body as a whole, and its front end is a fan-shaped cavity for installing the chip array module 13, the chip array module 13 is fixed to the front end of the probe housing 11 through the connecting shaft 14, and can smoothly rotate around the connecting shaft 14 in the fan-shaped cavity at the front end of the probe housing 11; a cube cavity protrudes from the rear end of the probe housing 11 and leaves a circular hole, through which the probe cable 16 passes The probe cable 16 is fixed through the hole by filling solid glue; a dovetail groove guide rail is arranged at the central part of the upper part of the probe housing 11, and the locking device 12 is installed on the guide rail and can slide forward and backward along the guide rail to drive the movement of the locking pin to realize the locking and unlocking of the damping body; two circular channels are symmetrically arranged at the lower part of the probe housing 11, and two coupling agent conduits 15 pass through the entire probe housing 11 and are installed inside the circular channels; the connecting shaft 14 is installed at the lower part of the outer side of the probe housing 11; the wedge block 2 is a trapezoidal body as a whole, and the lower part is processed into a curved surface, and its curvature matches the curvature of the inspected pipeline 6; the probe base 1 and the wedge block 2 are connected by two symmetrically arranged connecting screws 3.

[0035] The probe housing 11 is made entirely of aluminum alloy.

[0036] Figure 5 Shown is a schematic diagram of the chip array module structure of the present invention.

[0037] The chip array module 13 includes a damping body 131, a chip array 132, a rectangular groove 133 and a chip cable arrangement 134; the damping body 131 is fan-shaped, and its upper curved surface is provided with 7 rectangular grooves 133, the size of the rectangular grooves 133 matches the size of the locking pin 121, and each rectangular groove 133 can ensure that the internal channel is parallel to the locking pin when the damping body 131 moves to the position of the locking pin 121, and the locking pin 121 can be smoothly inserted into the rectangular groove; a circular channel is provided at the lower part of the damping body 131, and the connecting shaft 14 passes through the center; the chip array 132 is a rectangular plane as a whole, consisting of 1 It is composed of 6 closely arranged rectangular piezoelectric chips and is located at the front end of the damping body 131. Each rectangular piezoelectric chip is connected to a flexible cable for piezoelectric chip signal transmission. The 16 cables are arranged in sequence to form a chip cable 134; a portion of the chip cable 134 close to the chip array is embedded in the damping body 131, and the rear half is stacked inside the probe base 1, and moves with the movement of the damping body 131. The rear end of the chip cable 134 is connected to the probe cable 16; when the damping body 131 is formed, the chip array 132 and the chip cable 134 are embedded in it to form a core unit for transmitting and receiving signals.

[0038] The damping body 131 is made of a mixture of epoxy resin and tungsten powder through molding, and the damping body 131 has a damping effect on the vibration of the chip array 132 .

[0039] Figure 3 Shown is a schematic structural diagram of the wedge block of the present invention.

[0040] The wedge block 2 is made of organic glass, with a sound-absorbing material 24 installed at the front end, a damping body groove 21 and a screw hole 22 at the rear end, and a coupling agent channel 23 at the lower part; the size of the damping body groove 21 matches the size of the front end surface of the damping body 131, and the part of the damping body 131 protruding from the probe housing 11 is completely immersed in the damping body groove 21, and the inner wall of the damping body groove 21 contacts the chip array; there are two screw holes 22, which are symmetrically arranged on both sides of the wedge block, and the connecting screws 3 are screwed into them to fasten the wedge block to the probe; the coupling agent channel 23 is a curved channel, and its diameter is the same as the inner diameter of the coupling agent conduit 15. When the wedge block 2 is connected to the probe, it forms an integral channel to guide the coupling agent transported from the coupling agent conduit 15 to the contact surface between the wedge block 2 and the workpiece.

[0041] The sound absorbing material 24 is in the shape of a triangular prism and is made of rubber, and is used to reduce the clutter signal of the phased array probe and improve the detection signal-to-noise ratio.

[0042] Figure 4 Shown is a schematic structural diagram of the locking device of the present invention.

[0043] The locking device 12 includes a locking pin 121, a locking body 122 and a spring 123. The lower part of the locking body 122 is a dovetail slider, the size of which matches the dovetail groove guide rail on the upper part of the probe housing 11. The locking device 12 is installed in the dovetail groove guide rail on the upper part of the probe housing 11 through the dovetail slider and can slide back and forth in the dovetail groove guide rail; a rectangular locking pin 121 is installed at the front end of the locking body 122, and the size of the locking pin 121 matches the rectangular groove 133 of the chip array module 13. Match; when the chip array module 13 rotates to a predetermined position around the connecting shaft 14, the locking pin 121 is inserted into the rectangular groove 133 on the upper part of the chip array module 13, restricting the movement of the rectangular groove 133, thereby locking the chip array module 13; a cylindrical channel is set at the rear end of the locking body 122, and the spring 123 is installed inside the channel. The spring 123 provides thrust for the locking body in a natural state; a semicircular protrusion is set on the upper part of the locking body 122, and pushing the protrusion can realize the forward and backward movement of the locking body 122.

[0044] The present invention also provides a method for assembling the chip array angle-adjustable phased array ultrasonic probe, comprising the following steps:

[0045] (1) First, use the simulation function of the phased array ultrasonic detector 4 or the dedicated simulation software to perform simulation, comprehensively consider the specifications, materials, microstructure and other characteristics of the inspected workpiece to determine the relevant detection parameters, and at the same time obtain the optimal incident angle, and obtain the corresponding wafer array angle after conversion;

[0046] (2) The locking body 122 is moved toward the spring 123 to compress the spring 123. At the same time, the probe drives the locking pin 121 to move out of the corresponding rectangular groove 133 until the two are separated.

[0047] (3) moving the damping body 131, thereby changing the angle between the chip array 132 and the bottom surface of the probe housing 11, so that the angle value is equal to the chip array angle obtained by simulation;

[0048] (4) Slowly release the locking body 122. The locking body 122 moves forward under the push of the spring 123, driving the locking pin 121 to insert into the corresponding rectangular groove 133, thereby locking the damping body 131 and preventing it from rotating.

[0049] (5) Select a matching wedge 2. When selecting a wedge, two conditions should be met at the same time: the inclination angle of the chip array 132 is the same as the inclination angle of the damping body groove 21; the curvature of the bottom surface of the wedge matches the curvature of the inspected pipe 6;

[0050] (6) Take a proper amount of engine oil or vaseline and evenly apply it on the surface of the damping body groove 21, then combine the probe with the wedge block so that the chip array 132 is in close contact with the surface of the damping body groove 21, and finally tighten the connecting screws 3 on both sides into place. The probe assembly is completed.

[0051] Figure 7 Shown is a detection schematic diagram of the present invention.

[0052] The present invention also provides a detection method of the chip array angle-adjustable phased array ultrasonic probe, comprising the following steps:

[0053] 1) Connect the probe cable 16 to the phased array ultrasonic detector 4, connect the probe coupling agent conduit to the outlet conduit of the coupling agent delivery pump 5 with two rubber hoses, and place the phased array probe at a predetermined position of the workpiece to be inspected;

[0054] 2) While moving the probe, the coupling agent is evenly pumped to the contact surface between the wedge block 2 and the workpiece, and the phased array ultrasonic detector 4 synchronously displays the probe signal and the detection data until the workpiece detection is completed.

[0055] The present invention is a split probe structure, the probe base can provide different chip array angles, the bottom surface of the wedge can be processed into different curvatures, and more parameter combination options are provided for on-site detection work; the present invention designs the core chip array into an independent unit, which is an integration and fusion of the chip array, the damping body and the cable, and is formed into an integral module through molding processing; the chip array module is a fan-shaped body, which can rotate smoothly around the connecting axis, and the chip cable arrangement is a single-row harness composed of flexible cables, which will not constrain the movement of the chip array module. The chip array module can flexibly construct the chip array angle required for detection to obtain the best detection sensitivity; the probe shell of the present invention is processed with a dovetail groove guide rail, a dovetail-shaped slider is arranged at the lower part of the locking body to match the guide rail, and a locking pin is matched with a series of rectangular grooves at the upper part of the damping body, and the left and right movement of the locking body drives the movement of the locking pin to realize the locking and unlocking of the damping body; the present invention uses the coupling agent conduit in the probe base and the coupling agent channel in the wedge to jointly form a coupling agent delivery pipeline to achieve accurate delivery of the coupling agent.

[0056] The phased array chip array module of the present invention can smoothly rotate along the connecting axis to produce different chip array angles. It can meet the detection requirements of different workpieces to be inspected on site without replacing the phased array probe. It is easy to operate and has high detection efficiency. When inspecting parts of different specifications and materials on site, it is only necessary to adjust the probe chip array angle, and then select a wedge block that matches the curvature and matches the probe chip array for detection. When inspecting on site, it is only necessary to prepare wedge blocks of various specifications, and there is no need to prepare probes of various specifications. The wedge block is made of organic glass and sound-absorbing material, and its price is much lower than that of the probe. The use of this patented probe can greatly reduce the cost of detection. The coupling agent delivery pipeline of the present invention can be used in conjunction with the coupling agent delivery pump to greatly improve the on-site detection speed, and the coupling agent can be evenly filled with the probe and the surface of the workpiece to be inspected, which saves more coupling agent than the manual brushing method, and has a good coupling effect and high detection quality.

[0057] The above embodiments of the present invention are merely illustrative and not exclusive, and all modifications within the scope of the present invention or equivalent to the scope of the present invention are encompassed by the present invention.

Claims

1. A chip array angle-adjustable phased array ultrasonic probe, characterized in that: The invention comprises a probe base (1) and a wedge (2), wherein the probe base (1) comprises a probe housing (11), a locking device (12), a chip array module (13), a connecting shaft (14), a coupling agent conduit (15) and a probe cable (16); the probe housing (11) is a trapezoidal body as a whole, and its front end is a fan-shaped cavity for installing the chip array module (13); the chip array module (13) is fixed to the front end of the probe housing (11) through the connecting shaft (14) and can smoothly rotate around the connecting shaft (14) in the fan-shaped cavity at the front end of the probe housing (11); a cube cavity protrudes from the rear end of the probe housing (11) and leaves a circular hole, through which the probe cable (16) passes, and the probe cable (16) is fixed by filling solid glue; the locking device (12) comprises a locking pin (121), a locking body (122) and a spring ( 123), the chip array module (13) comprises a damping body (131), a chip array (132), a rectangular groove (133) and a chip cable arrangement (134); a dovetail groove guide rail is arranged at the center of the upper part of the probe housing (11); a locking device (12) is mounted on the guide rail and can slide forward and backward along the guide rail to drive the movement of the locking pin to lock and unlock the damping body (131); two circular channels are symmetrically arranged at the lower part of the probe housing (11); two coupling agent conduits (15) penetrate the entire probe housing (11) and are installed inside the circular channels; a connecting shaft (14) is installed at the lower part of the outer side of the probe housing (11); the wedge block (2) is a trapezoidal body as a whole, and the lower part is processed into a curved surface, and its curvature matches the curvature of the inspected pipeline (6); the probe base (1) and the wedge block (2) are connected by two symmetrically arranged connecting screws (3); The wedge block (2) has a sound absorbing material (24) installed at the front end, a damping body groove (21) and a screw hole (22) at the rear end, and a coupling agent channel (23) at the lower part; the size of the damping body groove (21) matches the size of the front end surface of the damping body (131); the portion of the damping body (131) protruding out of the probe housing (11) is completely sunken into the damping body groove (21); the inner wall of the damping body groove (21) contacts the chip array; two screw holes (22) are provided, symmetrically arranged on both sides of the wedge block, and the connecting screws (3) are screwed into the screw holes to fasten the wedge block to the probe; the coupling agent channel (23) is a curved channel, the diameter of which is the same as the inner diameter of the coupling agent conduit (15); when the wedge block (2) is connected to the probe, an integral channel is formed to guide the coupling agent transported by the coupling agent conduit (15) to the contact surface between the wedge block (2) and the workpiece.

2. The chip array angle-adjustable phased array ultrasonic probe according to claim 1, characterized in that: The probe housing (11) is entirely made of aluminum alloy.

3. The chip array angle-adjustable phased array ultrasonic probe according to claim 1, characterized in that: The damping body (131) is fan-shaped in shape, and a plurality of rectangular grooves (133) are arranged on its upper curved surface. The size of the rectangular grooves (133) matches the size of the locking pin (121). When the damping body (131) moves to the position of the locking pin (121), each rectangular groove (133) can ensure that the internal channel is parallel to the locking pin, and the locking pin (121) can be smoothly inserted into the rectangular groove. A circular channel is arranged at the lower part of the damping body (131), and the connecting shaft (14) passes through the center. The chip array (132) is a rectangular plane as a whole, and is composed of 16 closely arranged rectangular piezoelectric chips, which are located at the damping body (1 31) front end, each rectangular piezoelectric chip is connected to a flexible cable for piezoelectric chip signal transmission, and 16 cables are arranged in sequence to form a chip cable arrangement (134); a portion of the chip cable arrangement (134) close to the chip array is embedded in the damping body (131), and the rear half is stacked inside the probe base (1), and moves with the movement of the damping body (131), and the rear end of the chip cable arrangement (134) is connected to the probe cable (16); when the damping body (131) is molded, the chip array (132) and the chip cable arrangement (134) are embedded in it to form a core unit for transmitting and receiving signals.

4. The chip array angle-adjustable phased array ultrasonic probe according to claim 3, characterized in that: The damping body (131) is made from a mixture of epoxy resin and tungsten powder through molding, and the damping body (131) has a damping effect on the vibration of the chip array.

5. The chip array angle-adjustable phased array ultrasonic probe according to claim 1, characterized in that: The sound absorbing material (24) is in the shape of a triangular prism and is made of rubber and is used to reduce the clutter signal of the phased array probe and improve the detection signal-to-noise ratio.

6. The chip array angle-adjustable phased array ultrasonic probe according to claim 1, characterized in that: The lower part of the locking body (122) is a dovetail-shaped slider, and the locking device (12) is installed in the dovetail groove guide rail on the upper part of the probe housing (11) through the dovetail-shaped slider and can slide forward and backward in the dovetail groove guide rail; a rectangular parallelepiped locking pin (121) is installed at the front end of the locking body (122), and the size of the locking pin (121) matches the rectangular groove (133) of the chip array module (13); when the chip array module (13) rotates to a predetermined position around the connecting shaft (14), the locking pin (121) is inserted into the rectangular groove (133) on the upper part of the chip array module (13), restricting the movement of the rectangular groove (133), thereby locking the chip array module (13); a cylindrical channel is provided at the rear end of the locking body (122), and a spring (123) is installed inside the channel, and the spring (123) provides thrust for the locking body in a natural state; a semicircular protrusion is provided on the upper part of the locking body (122), and the protrusion can be pushed to realize the forward and backward movement of the locking body (122).

7. The method for assembling the chip array angle-adjustable phased array ultrasonic probe according to any one of claims 1 to 6, characterized in that: The steps include: 1) First, use the simulation function of the phased array ultrasonic detector (4) or dedicated simulation software to perform simulation, comprehensively consider the specifications, materials, and microstructure characteristics of the workpiece to determine the detection parameters, and at the same time obtain the optimal incident angle, and then convert it to obtain the corresponding chip array angle; 2) The locking body (122) is moved toward the spring (123) to compress the spring (123), and at the same time, the probe drives the locking pin (121) to move out of the corresponding rectangular groove (133) until the two are separated; 3) moving the damping body (131) to change the angle between the chip array (132) and the bottom surface of the probe housing (11) so that the angle is equal to the chip array angle obtained by simulation; 4) Slowly loosen the locking body (122), and the locking body (122) moves forward under the push of the spring (123), driving the locking pin (121) to be inserted into the corresponding rectangular groove (133), thereby locking the damping body (131) and preventing it from rotating; 5) Selecting a matching wedge (2), the wedge should meet two conditions at the same time: the inclination angle of the chip array (132) is the same as the inclination angle of the damping body groove (21); the curvature of the bottom surface of the wedge matches the curvature of the inspected pipe (6); 6) Take a proper amount of engine oil or vaseline and evenly apply it on the surface of the damping body groove (21), then assemble the probe with the wedge block so that the chip array (132) is in close contact with the surface of the damping body groove (21), and finally tighten the connecting screws (3) on both sides into place. The probe assembly is completed.

8. The detection method of the chip array angle-adjustable phased array ultrasonic probe according to any one of claims 1 to 6, comprising the following steps: 1) connecting the probe cable (16) to the phased array ultrasonic detector (4), connecting the probe coupling agent conduit to the outlet conduit of the coupling agent delivery pump (5) with two rubber hoses, and placing the phased array ultrasonic probe at a predetermined position of the workpiece to be inspected; 2) while moving the phased array ultrasonic probe, evenly pumping coupling agent to the contact surface between the wedge block (2) and the workpiece, the phased array ultrasonic detector (4) synchronously displays the probe signal and the detection data until the workpiece detection is completed.

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