The invention belongs to the field of a detection robot, and particularly relates to a phased-array ultrasonic nondestructive detection fixture for a steam turbine welding rotor, which is used for overcoming the weaknesses of the prior art that no positioning and drive device is arranged and the technical problem of defect caused by detecting the welding rotor seam by utilizing the vision and thickness measuring method. A system mainly comprises an adsorption-type movable platform, a positioning system and a driving clamp. The phased-array ultrasonic nondestructive detection fixture has the advantages that a wedged block is automatically adaptive to the surface angle of the welding rotor by virtue of the rotation degree of freedom of the tail end of the clamp and the elastic force of a spring, and the wedged block is tightly fit to the welding rotor; the transverse movement of the wedged block can be realized by virtue of a drive motor and a transmission mechanism, so that the wedged block can be used for detecting different positions on the surface of the welding rotor; the axial positioning between the wedged block and the welding rotor is realized under the effect of the positioning system, so that the wedged block can be accurately aligned to a weld seam.

Phased-array ultrasonic nondestructive detection fixture of welding rotor

A welding portion inspection device includes a device body, a probe, a sound propagation medium, an elastic support mechanism configured to allow the probe and the sound propagation medium to be elastically supported to the device body, and a guide member formed of a material higher in hardness than a metal plate. The guide member is disposed such that a first part is positioned on a side of the sound propagation medium and second parts protrude beyond a tip surface of the sound propagation medium. The probe is configured to oscillate a ultrasonic wave such that the ultrasonic wave is emitted to a welding portion of the metal plate through the sound propagation medium and perform inspection of the welding portion based on a detected reflected wave of the ultrasonic wave in a state where the tip surface of the sound propagation medium faces the welding portion.

Welding portion inspection device

The invention belongs to the field of nondestructive testing and relates to an ultrasonic phased array rapid scanning device and detection method of an electronic beam welding line According to the ultrasonic phased array rapid scanning device and detection method of an electronic beam welding line provided by the invention, position information of a phased array probe is detected and transmitted by using a rolling wheel type encoder and electronic scanning of a phased array is realized; two-dimensional scanning is simplified into one-dimensional scanning so that the detection efficiency is greatly improved; in addition, by controlling a delaying rule of different groups of wafers, an acoustic beam shape is controlled, so that whole-thickness dynamic focusing of the welding line is realized and the probe is prevented from being frequently replaced; meanwhile, a contact-method detection method is adopted and water immersing or water spraying scanning equipment is not needed, so that the whole size of the equipment is reduced, the whole set of device is convenient to carry and outer-field detection is convenient to carry out The actual detection of the embodiment of the invention proves that the detection efficiency is improved by more than or equal to 3 times

Ultrasonic phased array rapid scanning device and detection method of electronic beam welding line

The invention relates to an ultrasonic phased array detection technology, and aims at providing a method and a device for detecting the welding seam of a high-pressure hydrogen storage vessel adapter. The device includes an ultrasonic detector and a curved-surface wafer ultrasonic phased array probe, wherein a curved-surface wafer is arranged on the probe surface; the device also includes a probe mounting rack, a hollow screw, a screw base and a handwheel; the probe mounting rack shelf is fixed to the top end of the hollow screw; the center of the screw base is provided with a threaded hole; the outer surface of the hollow screw is provided with matched thread; the screw base sleeves the hollow screw; the center of the hand wheel is provided with a through hole; the handwheel fixedly sleeves at the end of the hollow screw; a probe line passes through the hollow screw and is used for connecting the ultrasonic detector and the phased array probe. The method can realize defect detection of the vessel adapter forgings and hemispherical seal head butt welding seam and heat affected zone; the detection is simple for operation, and method and the device can effectively detect all volume defects and longitudinal defects, so that the detection accuracy and reliability are obviously improved.

Method and device for detecting welding seam of high-pressure hydrogen storage vessel adapter

The invention belongs to the field of testing robots and in particular relates to a TOFD ultrasonic non-destructive testing self-positioning fixture of a welded rotor. The fixture comprises an adsorption type mobile platform, a positioning system, a fixture slideway and a self-adaption fixture. The TOFD ultrasonic non-destructive testing self-positioning fixture of the welded rotor is used for clamping a TOFD ultrasonic non-destructive testing wedge block and a probe, the wedge block automatically adapts to surface angle of the welded rotor through two rotational degrees of freedom of the tail end of the fixture and spring force and is tightly pasted with the welded rotor, and axial positioning between the fixture and the welded rotor can be realized under action of the positioning system so that the welded block can accurately aim at a welded joint.

TOFD ultrasonic non-destructive testing self-positioning fixture of welded rotor

The utility model belongs to the field of a detection robot, and particularly relates to a phased array ultrasonic nondestructive testing fixture for a welded disc rotor of a steam turbine, aiming at solving the technical problems that in the existing scheme, a locating device and a driving device are not available, and a visual method and a thickness measurement method which are used for detecting the welded joint of the welded disc rotor have defects. The system mainly consists of an adsorption type mobile platform, a locating system and a driving fixture. The phased array ultrasonic nondestructive testing fixture has the advantages that a wedge block can automatically adapt to the surface angle of the welded disc rotor by virtue of the rotational freedom degree of the tail end of the fixture and the elastic force of the spring and is closely jointed with the welded disc rotor; the wedge block can move along the transverse direction by a driving motor and a transmission mechanism, thus being capable of detecting the different positions of the surface of the welded disc rotor; the axial location between the wedge block and the welded disc rotor can be realized under the action of a locating system, so that the wedge block is accurately aligned with the welded joint.

Phased array ultrasonic nondestructive testing fixture for welded disc rotor

The invention discloses a phased array ultrasonic nondestructive testing robot system applicable to a steam turbine welding rotor. The system comprises a movable platform, a positioning rod, a phased array probe, a phased array probe clamp, a control platform and ultrasonic testing equipment. The system has the advantages that manual work is replaced and a working range is expanded; testing operation can be carried out in a narrow space; and the clamp is provided with a motor drive so that the testing position of the probe can be accurately adjusted, the position of the probe can be changed under the condition that the probe is not detached, and the testing work can be efficiently finished. The system has the advantages of stability and rapidness, and has a good application prospect.

Phased array ultrasonic nondestructive testing robot system applicable to steam turbine welding rotor

The utility model belongs to the field of detecting robots and particularly relates to a TOFD ultrasonic nondestructive-detection self-positioning clamp for a welding rotor. The TOFD ultrasonic nondestructive-detection self-positioning clamp comprises an absorbing type mobile platform, a positioning system, a clamp sliding rail and a self-adaptive clamp. The TOFD ultrasonic nondestructive-detection self-positioning clamp is used for clamping a TOFD ultrasonic nondestructive-detection wedging block and a probe and enabling the wedging block to automatically adapt to the surface angle of the welding rotor according to the two rotary freedom degree of the tail end of the clamp and the elasticity of a spring and to be closely attached with the surface of the welding rotor; and the axial positioning with the welding rotor can be realized under the action of the positioning system, so that the wedging block can be accurately aligned to a welding seam.

Huang Wei

Papers

Phased-array ultrasonic nondestructive detection fixture of welding rotor

Phased array ultrasonic nondestructive testing fixture for welded disc rotor

Phased array ultrasonic nondestructive testing robot system applicable to steam turbine welding rotor

TOFD ultrasonic nondestructive-detection self-positioning clamp for welding rotor

TOFD ultrasonic non-destructive testing self-positioning fixture of welded rotor