The invention relates to a portable flaw detection car. Fan blade movable baffle plates are connected on the lower surface of a supporting rail table in an adjustable manner, and the lower surface of the supporting rail table is connected with a movable tripod through a fixed connecting end and a lifting rod. The fan blade movable baffle plates are arc-shaped. A self-locking pulley and a brake apparatus are installed on the lower surface of the movable tripod. A lifting handle is arranged between the movable tripod and the lifting rod. As the portable flaw detection car provided by the invention utilizes the lifting rod and the lifting handle, the height of a tank body can be adjusted to be suitable for shooting, so that the working efficiency of flaw detection is greatly improved; meanwhile, as the fan blade movable baffle plates have certain radian, the top end of a sealing head can be firmly clamped, and the spacing between the two baffle plates can be adjusted, so that the purpose of suitability for containing pressure vessels of different specifications and models for flaw detection can be achieved; and due to the brake apparatus, the car for containing the tank body can be still in a safe and stable state for flaw detection, so that the unnecessary safe hidden trouble is avoided, an operation method is simple, and the portable flaw detection car is convenient to carry, and the working efficiency of flaw detection can be greatly improved.

Portable flaw detection car

The invention discloses a rapid X-ray flaw-inspection detection platform and detection method. The detection platform comprises a scale platform, wherein platform support legs are arranged under the scale platform; an elevator device is arranged in the center of the scale platform; an X-ray machine is fixed on the elevator device; an X-ray machine cable line support rod is arranged at one corner of the scale platform; a cable line of the X-ray machine is erected on the X-ray machine cable line support rod; and the detection platform further comprises a laser collimator which is installed on the X-ray machine cable line support rod. By utilizing the detection platform and detection method, a focus point of the X-ray machine is finely tuned in focal length and height, so as to improve the precision in focusing; by utilizing the detection platform, multiple test pieces can be subjected to exposure detection at the same time, so that the detection efficiency is improved; and in addition, due to the use of the mechanical elevator device, the working intensity of detection personnel is reduced, and time and labor are saved.

Rapid X-ray flaw-inspection detection platform and detection method

The invention discloses a welding method capable of improving container welding flatness. The method includes the steps that curly steel plates for assembling containers are uncoiled into plane steel plates through an uncoiling machine, and the steel plates are flattened through the uncoiling machine; the surfaces of the flattened steel plates are subjected to uniform sand blasting, and after sand blasting, the surfaces of the steel plates are uniformly sprayed with a layer of zinc film; the flattened steel plates are pressed into plates with grooves through a forming press, and the formed steel plates are cut into a proper length through a cutting machine according to the size of containers to be formed. According to the method, steel plates to be welded are placed horizontally and fixed through a clamping device, so that the steel plates are kept flat before welding; an infrared irradiator is used, and infrared rays are made to be tangent to the steel plates, so that whether or not the steel plates are flat is checked more accurately.

Welding method capable of improving container welding flatness

The invention provides a TOFD-12dB spread angle measuring tool and a set thereof. The TOFD-12dB spread angle measuring tool comprises a first clamp plate (1), a second clamp plate (2) and a connecting plate (3), the first clamp plate (1), the connecting plate (3) and the second clamp plate (2) are sequentially connected to form a concave shape, a first installing hole (4) for inserting an ultrasonic probe is formed in the surface, back on to the first clamp plate (1) and the second clamp plate (2), of the connecting plate (3), and the first clamp plate (1) and the second clamp plate (2) can clamp a CSK-IA test block. The TOFD-12dB spread angle measuring tool and the set thereof overcome the defects that in the -12dB measuring process of TOFD, manual operation is instable, and result errors are large. During measurement, the ultrasonic probe is fixed to the device, and the -12dB spread angle of the TOFD probe can be measured safely, stably and fast.

TOFD-12dB spread angle measuring tool and set thereof

The invention relates to the field of pipeline weld flaw detection in a nuclear power plant, and provides a nuclear power plant weld seam radiographic inspection center exposure device and a radiographic inspection method. The nuclear power plant weld seam radiographic inspection center exposure device comprises a source guiding sleeve, a driving assembly, a sliding limit sleeve and a positioninglock. The nuclear power plant weld seam radiographic inspection center exposure device can perform transillumination on a large diameter pipe of a nuclear power plant from the center to perform radiographic inspection on the large thickness weld in the large diameter pipe; in the process of the central transillumination of the large diameter pipe, the nuclear power plant weld seam radiographic inspection center exposure device can automatically position a radioactive source head on the central axis of the pipe aligned with the weld, therefore, the human deviation is avoided, and the alignmenttime is saved; meanwhile, the operation process of the invention is simple, and the radiation safety risk of the operator which may be brought about by multiple times of filming, source emitting and inspection processes is effectively reduced; and the duration of radiographic inspection is saved, the work efficiency is improved, and the whole maintenance period of nuclear power plant is optimized.

Nuclear power plant weld seam radiographic inspection center exposure device and radiographic inspection method

The utility model discloses an X-ray radiographic inspection rapid detection platform. The X-ray radiographic inspection rapid detection platform comprises a scale platform, wherein platform support legs are arranged under the scale platform, a lift device is arranged in the center of the scale platform, an X-ray machine is fixed on the lift device, an X-ray machine cable support rod is arranged at one corner of the scale platform, and a cable frame of the X-ray machine is arranged on the X-ray machine cable support rod. The X-ray radiographic inspection rapid detection platform further comprises a laser collimator which is arranged on the X-ray machine cable support rod. Fine adjustment can be carried out on the focus of the X-ray machine from two directions, namely the focal distance and the height, and the accuracy of focusing is improved. The X-ray radiographic inspection rapid detection platform can implement multi-specimen simultaneous exposure detection, and improves the detection efficiency. Besides, the use of the mechanical lift device relieves the labor intensity of detection personnel, and time and labor are saved.

X-ray radiographic inspection rapid detection platform

The utility model provides an X-ray exposure detection lifting support used in industrial flaw detection The lifting support comprises a pair of split type lifting supports, wherein each lifting support comprises an end plate at the bottom; a truckle is mounted at the bottom of each end plate; two lifting sliding shafts are vertically mounted on each end plate; height scale marks are marked on each lifting sliding shaft; a vertically slidable shaft sleeve is mounted on each lifting sliding shaft; two fixed handle clamping grooves are formed in the lower end of each shaft sleeve respectively; a movable handle clamping groove is formed in the upper end of each shaft sleeve and is mounted on the two shaft sleeves at the same time, and the movable handle clamping groove are used for adjusting height and can synchronously lift or descend According to the utility model, the lifting support can adapt to pipelines of various specifications, and is adjustable in height, therefore manual labor intensity can be reduced, focusing efficiency and working quality can be improved

X-ray exposure detection lifting support

The utility model discloses an acoustic beam spread angle testing device of an ultrasonic detection probe by time of flight diffraction. The acoustic beam spread angle testing device comprises a basic test block, a wedge block and a magnetic clip, wherein the basic test block is made from carbon steel, and comprises a sector test block and a rectangular test block which is integrally connected with the sector test block, wherein the central angle of the sector test block is 90 degrees; 0-90-degree scale lines are engraved on the circular arc lateral surface of the sector test block; the wedge block is put above the basic test block; the magnetic clip is tightly attracted on the basic test block, and comprises a strip-shaped iron sheet with an end part which can be buckled. By the acoustic beam spread angle testing device, the angle of the main acoustic beam spread angle, the angle of an upper semi-spread angle and the angle of the lower semi-spread angle of the probe can be obtained directly, so that the calculation process is prevented, the measurement errors can be reduced effectively, the detection technology precision and the practical data detection precision are improved, and moreover, the stability of the probe in the testing process can be ensured.

Feng Dingguo

Papers

Rapid X-ray flaw-inspection detection platform and detection method

X-ray radiographic inspection rapid detection platform

X-ray exposure detection lifting support

Acoustic beam spread angle testing device of ultrasonic detection probe by time of flight diffraction