137results about How to "Improve flaw detection efficiency" patented technology

The invention relates to a performance test device for a water immersion focusing probe and a test method thereof. A steel ball is placed on a reference reflection seat of the performance test device placed in a water tank, the corresponding upside of the steel ball is provided and aligned with a probe to be tested, the probe to be tested generates ultrasonic signals to the steel ball through an ultrasonic gauge, and the performance difference of the probe is tested through the variation of reflection signals. A three-dimensional guide adjusting device is adjusted to test the position and variable quantity of the probe in real time so that reflection echo signals of the probe on the steel ball reaches maximum. Effective reflected wave is received by the probe and displayed on a display screen of the ultrasonic gauge in a form of wave height; scale numerical values on X axis, Y axis and Z axis of a graduated scale are recorded respectively; and various performance indexes of the probe are determined by observing the variation of the wave height. The performance test device for the water immersion focusing probe and the test method thereof are simple and practical, and can test the indexes such as focus, sound width, focus diameter, sound offset angle, sensitivity surplus, sensitivity deflection of a multi-chip probe and the like without depending on special laboratory equipment.

The invention provides a device and a method for flaw detection of small crawler-type rails based on three-way ultrasonic diffraction. The device provided by the invention comprises a three-way crawler-type travel system, an ultrasonic detection master control system and a plurality of three-way ultrasonic diffraction detection sub-systems, wherein, all the three-way ultrasonic diffraction detection sub-systems and the ultrasonic detection master control system are configured on the three-way crawler-type travel system, and the three-way detector of each three-way ultrasonic diffraction detection sub-system is embedded in the crawler of the three-way crawler-type travel system. The method provided by the invention comprises the following steps: by means of the operations of all the three-way ultrasonic diffraction detection sub-systems and the ultrasonic detection master control system, carrying out crawler-type flaw detection, thus largely increasing the data sampling time in an areaof the rail at the same detection speed; and simultaneously based on the three-way structure, carrying out flaw estimation by means of the propagation sound path of diffracted waves so as to be not sensitive to the energy and amplitude of received echo pulses, thereby still ensuring accurate work in the detection condition with large energy attenuation.

The invention provides multifunctional ultrasonic phased array pipeline circumferential weld detection equipment which comprises a main body, a magnetic pressure wheel mechanism, an auxiliary support, a fastening device, a left flaw detection probe bracket, a right flaw detection probe bracket, a left flaw detection probe and a right flaw detection probe, wherein the main body comprises a base, a first slide bar, a second slide bar, a slide bar jackscrew, a left slide bar connecting rack, a right slide bar connecting rack, magnetic wheels and an axle; the fastening device is used for fastening the main body on a pipeline to-be-detected; the magnetic pressure wheel mechanism is arranged between the first slide bar and the second slide bar; the auxiliary support is connected with the first slide bar and the second slide bar of the main body; the flaw detection probe brackets are connected with the flaw detection probes and help the flaw detection probes to detect a weld joint of the pipeline to be detected. The equipment can rotate around the flaw detection pipeline smoothly during pipeline circumferential weld detection, thereby preventing impact of accidental conditions such as vibration on the detection effect, enlarging the application range of the equipment, and improving the flaw detection sensitivity and the detection efficiency.

The invention relates to an ultrasonic flaw-detecting machine for steel pipes. The ultrasonic flaw-detecting machine for the steel pipes is characterized in that: a flaw detection host machine comprises a box body, and two adjustable three-wheel centering devices are arranged at an inlet and an outlet on two sides of the box body respectively; a hollow spindle is arranged in the box body in a rotatable way, and a measured steel pipe passes through the hollow spindle, the inlet and the outlet; and the middle part of the hollow spindle is provided with at least three probe adjustment devices, an ultrasonic probe is arranged on each probe adjustment device, a power generation device and a signal pre-processing device are arranged outside the hollow spindle, and the signal pre-processing device is connected with the ultrasonic probes, and transmits detection data to an ultrasonic flaw detector of a control system by using a wireless signal. A structural form that the steel pipes are linearly pushed and the ultrasonic probes rotate is adopted, so that the pushing speed of the steel pipes is improved, and the flaw detection efficiency is improved; and the centrifugal force produced by the high-speed rotation of the hollow spindle extrudes the air in a detection cavity, and water is supplied by using an interlayer between an inner sleeve and the hollow spindle, so that the water supply quantity is large, bubbles are reduced, and the detection accuracy is improved.

The invention provides a pipeline inner wall automatic flaw detection, carbon arc gouging and welding robot. The robot comprises a main pipe body, a travelling mechanism, an ultrasonic flaw detectiondevice, a carbon arc gouging device and a welding device. All the devices move along the axes of the inner walls of pipelines through the travelling mechanism and move in the circumferential directionof the inner walls of the pipelines through a main rotary motor, the ultrasonic flaw detection device is used for performing ultrasonic flaw detection on weld joints between the pipelines, defectiveweld joint solder is planed off welding trouble points through the carbon arc gouging device, finally, repair welding is performed through the welding device, detection and repair of the welding quality between the pipelines are automatically completed, the detection efficiency is high, the labor intensity is relieved, the welding quality between the pipelines is guaranteed, and the safety and reliability of a steel structure are improved.

The invention discloses a steel pipe machining system and belongs to the technical field of steel pipe machining. The steel pipe machining system comprises a centering device, variable-speed perforating equipment, a normalizing and annealing two-purpose furnace, a sizing device, a straightening device, comprehensive flaw detection equipment and a detection and classification device. Different rotating speeds are provided for the variable-speed perforating equipment through the cooperation of a high-speed motor, a low-speed motor and a reduction gearbox so that different types of steel pipes can be perforated. According to the normalizing and annealing two-purpose furnace, two heat treatment processes are achieved through one furnace body. The comprehensive flaw detection equipment integrates an eddy current flaw detection method and an ultrasonic flaw detection method, so that the detection quality of the steel pipes is guaranteed. According to the whole system, the efficiency of the steel pipe machining process is high, and the quality of the steel pipes is guaranteed.

The invention discloses a high-frequency impulse magnetic powder inspection method and belongs to the technical field of magnetic powder inspection. The high-frequency impulse magnetic powder inspection method comprises the following steps: S1, pre-treatment: cleaning the surface of a workpiece to be inspected thoroughly to remove attachments on the surface of the workpiece, and cleaning and drying the workpiece; S2, magnetization: putting the workpiece in an electrified coil to magnetize the surface of the workpiece; S3, magnetic powder application: uniformly applying the magnetic powder to an inspection surface in an effective inspection range, wherein the magnetic powder is adsorbed to defective parts, then electrifying an instant current to the workpiece, and pouring a magnetic suspension for 2-3 times after power off; S4, inspection: inspecting the surface of the workpiece by using an electromagnetic probe which outputs high frequency impulse signals; S5, examination and recordingof magnetic traces; and S6, demagnetization: detecting the demagnetized workpiece with a magnetometer, and carrying out inspection with the high frequency impulse signals. The method is high in stability, low in cost and high in inspection efficiency, the detection precision is improved, and the method is convenient to operate and meets the production demands.

The invention discloses a weld joint nondestructive testing device for pipeline flaw detection. The device comprises a machine base, a liquid storage tank is formed in the middle of the top end of themachine base, a wastewater discharging mechanism is arranged in the liquid storage tank, and limiting and screening mechanisms are symmetrically arranged at the positions, corresponding to the two sides of the liquid storage tank, of the top end of the machine base, an efficient spraying mechanism is arranged at the top end, corresponding to the top of the liquid storage tank, of the machine base; each limiting and screening mechanism comprises an embedded groove, a supporting seat and a bearing wheel. The device is scientific and reasonable in structure and safe and convenient to use, the limiting and screening mechanisms are arranged, side guide rollers are pressed to descend through the self-weight of a pipeline, electrode plates at the bottom ends of the side guide rollers are attached to electrode plates at the top ends of bottom blocks, power is supplied to an electromagnet, and electromagnets are matched with magnetic strips, and sliding blocks are pushed to slide, meanwhile, the magnetic force of the electromagnets is increased according to the current conveying strength, and the pushing force of the electromagnets for pushing the magnetic strips is increased, therefore the moving effect of the sliding blocks is guaranteed.

The invention relates to a trolley type automatic ultrasonic flaw-detecting machine with a built-in robot for large cylindrical shell section parts. The trolley type automatic ultrasonic flaw-detecting machine comprises a working platform, a robot flaw-detecting trolley and an outer flaw-detecting device, and is characterized in that two parallel straight guide rails are arranged on the working platform, a driving roller carrier beam is perpendicularly and fixedly connected to axial ends of the two straight guide rails, a driven roller carrier beam is movably connected to the other ends of the two straight guide rails, two driving roller supports are arranged at two ends of the driving roller carrier beam, two driven roller supports are arranged at two ends of the driven roller carrier beam, and driving rollers and driven rollers are respectively supported on the driving roller supports and the driven roller supports by rotating pairs; and an outer guide rail is arranged on the same side of the driving roller carrier beam and the driven roller carrier beam, and the outer flaw-detecting device is movably connected onto the outer guide rail. The trolley type automatic ultrasonic flaw-detecting machine has the advantages of simplicity in operation, safety, reliability, simple structure, low cost, small occupied space and capability of automatically ultrasonically detecting flaws of the large cylindrical shell section parts.

The invention discloses a movable field X-ray rolling shooting device for a pipeline, and belongs to the technical field of flaw detection. The movable field X-ray rolling shooting device for the pipeline comprises a supporting frame, an operating mechanism and a walking mechanism, wherein the supporting frame is mounted on the external surface of a to-be-detected pipeline; the operating mechanism is mounted on the supporting frame; the walking mechanism is located between the operating mechanism and the to-be-detected pipeline. The movable field X-ray rolling shooting device for the pipeline, which is provided by the invention, is reasonable in structural design and is simple to make; not only can the special putting up of a detecting platform for an X-ray flaw detector be avoided and can the engineering cost be reduced, but also the all-around flaw detection for welds on the pipeline is realized; when the flaw detection is carried out on the welds on the same pipeline, the trouble of repeated disassembly and assembly is omitted; the flaw detection efficiency is greatly promoted; the engineering progress is quickened; a detector is enabled to keep far away from an area to be subjected to the flaw detection in a flaw detection process; the injury of radiographic flaw detection to the detector is reduced; a strong guarantee is provided for engineering safety.

The invention discloses an ultrasonic flaw detection method of a surfacing steel pipe from a base material side. The method is characterized by comprising a single straight probe detection from the base material side of the pipe and a phased array detection from the base material side of the pipe, wherein the single straight probe detection comprises using a single straight probe, correcting base line by using a flat-bottomed hole and a bottom echo, correcting and detecting sensitivity by using the flat-bottomed hole, so that echo of artificial flat-bottomed hole can reach 80 %; confirming scanning sensitivity of workpieces; and scanning the workpieces by using the single straight probe; and the phased array detection comprises selecting a phased array flaw detector and selecting probe and curvature wedge; correcting the phased array flaw detector and the probe and selecting a sector scanning and calibrating block; and scanning the workpieces by using the phased array detection. The method has characteristics of high flaw detection efficiency, accurate positioning, convenient repair, etc.

The invention relates to the technical field of magnetic powder inspection and discloses a method and a device for magnetic powder inspection on an annular workpiece. 8-station flow process layout is adopted so that the whole inspection process frequency only depends on magnetic powder inspection observation time and thus magnetic powder inspection efficiency is maximumly improved and magnetic powder inspection requirements on various batch annular workpieces are satisfied. An annular workpiece is horizontally and firmly placed on a workpiece tray without an assistant clamping device, the workpiece tray is provided with three strip peak-shaped support frames which are arranged in angle of 120 degrees, the end surface of the bottom of the annular workpiece contacts with only three peak lines of the support frames so that a dead zone caused by a support surface is maximumly avoided, and the annular chassis of the workpiece tray is provided with an open structure so that the interference produced by a ring induced current on detection sensitivity and an electric energy loss are effectively prevented.

The invention discloses a steel rail flaw detection ultrasonic waveguide inclined probe and a flaw detection method thereof. The probe comprises a shell, a sound absorption filler, at least one dielectric unit and at least one interface, wherein each dielectric unit is arranged inside the shell and comprises a wedged block, a dielectric wafer, a cable wire and a damping block; the dielectric waferis a dielectric ceramic piece of a thickness vibration mode; an included angle is formed between one surface of the wedged block and the horizontal plane; one surface perpendicular to a vibration direction, of the dielectric wafer, is flatly adhered to the surface of the wedged block; the damping block is tightly adhered to another surface perpendicular to the vibration direction, of the dielectric wafer; the sound absorption filler is arranged inside a vacant space except the dielectric unit inside the shell; the interface is arranged on one surface of the shell and is connected with the dielectric wafer through the cable wire. Due to adoption of the dielectric wafer of the thickness vibration mode, the probe is high in signal to noise ratio, low in cost and convenient to popularize, inaddition can be applied to flaw detection on rail heads and rail bottoms, and is long in single detection distance.

The invention discloses an automatic flaw detection trolley which comprises a trolley, wherein a plurality of driving wheels and driving devices are matched and arranged on the trolley; the driving devices drive the plurality of driving wheels; an ultrasonic flaw detection instrument is arranged below the trolley; a detection device and a buffer frame are arranged at the front end and the rear end of the trolley; and the detection device is arranged in the buffer frame. Through the mode, the automatic flow detection trolley provided by the invention can improve the flaw detection efficiency, can prolong the service life, and is simple in structure.

The invention discloses a container flaw detection device and a container production technology. The container flaw detection device comprises a base frame, a shielding shell internally provided with a flaw detection cavity, a flaw detection module, a conveying mechanism, a form positioning detection component, a deflection adjusting mechanism, an identification mechanism and a control module, the shielding shell is provided with an opening communicated with the flaw detection cavity, the flaw detection module is arranged on the base frame and located in the flaw detection cavity, the flaw detection module can detect different containers to be detected, part of the transmission mechanism is arranged in the flaw detection cavity through the opening, the transmission mechanism can transmit a to-be-detected container to get in and out of the flaw detection cavity, the form positioning detection component is used for obtaining welding seam position information of the to-be-detected container, the deflection adjusting mechanism can drive the to-be-detected container to rotate, and the control module is connected with the form positioning detection component, the transmission mechanism and the deflection adjusting mechanism so as to control the transmission mechanism and the deflection adjusting mechanism to operate according to the welding seam position information of the to-be-detected container. The flaw detection efficiency can be improved, and the safety of a user is guaranteed.

The invention discloses an automatic detection frame for a metal pipeline flaw detector, which comprises an automatic pushing frame, a detection frame and a metal pipe fitting, wherein the automatic pushing frame is integrally arranged on the outer wall of the metal pipe fitting in a sleeving mode. A follow-up pulley and a driving pulley are supported on the inner wall of the automatic pushing frame in a sliding manner; a diameter adjusting device is arranged between the inner wall of the automatic pushing frame and the outer surface of the metal pipe fitting; the detection frame is suspendedon the upper side and the lower side of the metal pipe fitting through a plurality of connecting rods fixed to the side wall of the automatic pushing frame, and angle adjusting mechanisms used for driving the connecting rods to rotate along the center of the automatic pushing frame are arranged between the bottom of the connecting rod and the side wall of the automatic pushing frame. Forward flawdetection of the flaw detector on the surface of the metal pipe fitting can be automatically completed; the process is more accurate than handholding, the deviation of a flaw detection path is reduced, the arranged angle adjusting mechanism ensures that the detection frame can carry out all-around coverage flaw detection on the surface of the metal pipe fitting, the working intensity of an operator in flaw detection work is reduced, and the flaw detection efficiency is improved.

The invention discloses a movable shooting device for on-site pipeline flaw detection and belongs to the technical field of flaw detection.The movable shooting device comprises a supporting frame, a running mechanism and a traveling mechanism, the supporting frame is mounted on the outer surface of a to-be-detected pipeline, the running mechanism is mounted on the supporting frame, and the traveling mechanism is positioned between the running mechanism and the to-be-detected pipeline.The movable shooting device is reasonable in structural design, setting up of a detection platform special for an X-ray flaw detector can be avoided, engineering cost is reduced, and omnibearing flaw detection of pipeline welding joints is realized; when flaw detection is performed on welding joints on a same pipeline, trouble of repeated mounting and demounting is omitted, flaw detection efficiency is improved greatly, engineering process is accelerated, detection personnel can be away from a flaw detection area in the flaw detection process, damage to the detection personnel by ray flaw detection is reduced, and a powerful guarantee is provided for engineering safety.