160results about How to "Realized loss" patented technology

The invention discloses a liquid nitrogen zero-loss biology sample low-temperature storage device which comprises a storage cylinder provided with a top cover (11), a heat-conducting inner container (4) and liquid nitrogen refrigerating equipment. The wall of the storage cylinder comprises an outer cylinder (1), a vacuum layer (2) and a heat-insulating layer (3). The heat-insulating layer (3) is arranged in the outer cylinder (1). The vacuum layer (2) is arranged between the outer cylinder (1) and the heat-insulating layer (3). Liquid nitrogen (6) is contained in the storage cylinder. The heat-conducting inner container (4) is soaked in the liquid nitrogen (6). A biology sample (5) is arranged in the heat-conducting inner container (4). The liquid nitrogen refrigerating equipment comprises a condensing heat exchanger (71) and a refrigerator (72). The condensing heat exchanger (71) is arranged between the heat-insulating layer (3) and the heat-conducting inner container (4). A refrigerating head (73) of the refrigerating machine (72) is connected with the condensing heat exchanger (71). The situation that in the running process, a large amount of cool air flows out is avoided, the liquid nitrogen zero loss is achieved, liquid nitrogen does not need to be supplemented, and the device is easy to maintain and suitable for places where no liquid nitrogen is supplied.

The invention relates to high-saturation flux density composite magnetic powder. The high-saturation flux density composite magnetic powder is prepared from powder A and powder B, wherein the proportion is as follows: 5-95wt% of powder A and 5-95wt% of powder B, the powder A is at least one of iron silicon powder, pure iron powder, iron silicon aluminum power, iron nickel powder, iron nickel molybdenum powder and iron cobalt alloy powder, the powder B is at least one of iron-based amorphous alloy powder, iron-based nanocrystal alloy powder, iron-nickel-based amorphous alloy powder, iron-cobalt-based amorphous alloy powder and iron-cobalt-based nanocrystal alloy powder, and the grain sizes of the powder A and the powder B are 8-200 micrometers. A magnetic core prepared by employing the composite magnetic powder has the characteristics of high Bs, low loss, low cost and the like and is suitable for mass production, the Bs value is 1.71T or above, the loss is not higher than 50W / kg under 1.5T and 1,000Hz, and the magnetic core particularly and suitably works in a medium- and low-frequency range (50Hz-10kHz).

The invention discloses a long-bar rolling production line and a production technology thereof, and belongs to the technical field of bar rolling. The production line comprises a continuous casting machine, a withdrawal and straightening machine, a pre-rolling emergency shear, a roughing mill unit, a head cutting flying shear, an intermediate mill unit, a finishing mill unit, a reducing and sizing unit and a cooling bed which are connected by roller beds in sequence, wherein the continuous casting machine is a single-machine uniflow continuous casting machine; and the roller bed between the continuous casting machine and the roughing mill unit is a heat preservation roller bed. The production technology comprises the steps of: carrying out single-machine uniflow continuous casting, carrying out heat preservation by using the conveying roller bed, straightening by using the withdrawal and straightening machine, rolling by using the roughing mill unit, rolling by using the intermediate mill unit, rolling by using the finishing mill unit, rolling by using the reducing and sizing unit, cooling and collecting. The long-bar rolling production line and the production technology have the beneficial effects that round billets are directly rolled after the round billets are cast by using the single-machine uniflow continuous casting machine, thereby reducing middle working procedures and heat loss, realizing endless rolling, meanwhile omitting a heating surface and reducing a failure rate in a production process.

The invention discloses a method for realizing wear-leveling in storage equipment as well as the storage equipment. The method comprises the following steps: determining that a storage unit has a bad block, recording the corresponding logic address when the bad block occurs in the storage unit which has the bad block, or after the number of recorded erasing times is cleared each time, starting torecord the number of erasing times of the storage unit identified by a physical address corresponding to the logic address currently, wherein the current corresponding relationship between the physical addresses of the storage unit and the logic addresses is stored in the storage equipment; selecting a storage unit from the storage units which do not have bad blocks when the number of recorded erasing times reaches a set threshold, updating the physical address corresponding to the logic address currently into the physical address of the storage unit selected from the storage units which do not have bad blocks; and clearing the number of recorded erasing times. The storage unit with excessive erasing times is effectively prevented from being broken by recording the number of erasing timesof the logic storage unit which has the bad block, so that the service life of the storage equipment is improved.

The invention discloses a power distribution station based on grid source load storage coordinated control and a grid source load storage coordinated control system thereof. The system comprises a centralized decision layer, a distribution control layer and an equipment layer which are connected through the network. The equipment layer comprises power distribution equipment of multiple power distribution stations and distributed energy sources. The distributed energy sources comprise a photovoltaic system, an energy storage system and charging piles which are constructed in a way of being combined with the power distribution equipment and accessed to a low voltage side bus through distributed energy source interfaces. The distribution control layer comprises power distribution automatic terminals and grid source load storage coordinated control terminals which are corresponding to all the power distribution stations. The centralized decision layer comprises a power distribution automatic scheduling master station which is connected with all the power distribution automatic terminals and a grid source load storage coordinated control master station which is connected with all the grid source load storage coordinated control terminals. The grid source load storage coordinated control master station controls working of the distributed energy sources in the corresponding power distribution stations through the grid source load storage coordinated control terminals of all the power distribution stations. Coordinated control of the distributed energy sources can be realized by using the grid source load storage coordinated control system so as to achieve the objective of scheduling optimization.

The invention discloses an intelligent switch power source power detection and control device, comprising a power detection circuit and a power control circuit, wherein the power detection circuit comprises a circuit sampling circuit (1), a rectifying filter circuit (2), a voltage comparison circuit (3), a time delay circuit (4), and a hysteresis feedback circuit (5). The power control circuit comprises a voltage sampling circuit (6), a reference voltage setting circuit (7), and a PWM controller (8). The invented power detection circuit inspects structure of output power by detecting switch power source main transformer primary current. When the output power is over-big, the power detection circuit generates a overpower signal by sampling the current, transforming the current signal to the voltage signal and comparing it with the preset reference voltage. The control circuit detects the overpower signal, varies voltage divider network of the control circuit by conducting a bipolar transistor, varies preset reference voltage for error comparison, decreases output duty ratio of control circuit width pulse modulation (PWM ) controller, decreases output voltage finally, so that the object of voltage self-control and system interior waste control are implemented.

The invention discloses an intelligent mud jacking measurement and control system of a large-circulation prestress pipeline, and the system comprises a slurrying system, a three-cylinder piston type grouting pump (24), a slurry feeding measurement and control apparatus, a slurry returning measurement and control apparatus and a computer (25). The intelligent mud jacking measurement and control system is characterized in that the three-cylinder piston type grouting pump (24) is connected with the slurrying system through a slurry sucking pipe (17), the slurry feeding measurement and control pipe is connected with the three-cylinder piston type grouting pump (24) through a slurry feeding pipe (18) and connected with the slurrying system through a slurry returning pipe (9), the terminal of the slurry feeding measurement and control apparatus is connected with a prestress pipeline (15), the inlet end of the slurry returning measurement and control apparatus is connected with the prestress pipeline (15), and the slurry returning measurement and control apparatus is connected with the slurrying system through a slurry returning pipe (20). According to the invention, automatic control is realized, the working intensity of workers is reduced, and the construction quality is improved.

The invention relates to a gallium nitride (GaN) enhancement type metal insulator semiconductor field effect transistor (MISFET) device and a manufacturing method thereof. The GaN enhancement type MISFET device comprises a substrate and an epitaxial layer arranged on the substrate, wherein the epitaxial layer comprises a stress buffer layer and a GaN layer sequentially from bottom to top; a heterogeneous layer selectively grows on the GaN layer; insulating medium layers are formed on the surface, where the heterogeneous layer does not grow, of the GaN layer and the surface of the heterogeneous layer; a grid region is arranged on the insulating medium layer formed on the surface of the GaN layer; the insulating medium layer formed on the surface of the heterogeneous layer is etched to form a source region and a drain region; grid metals are formed in the grid region; and ohmic contact metals are formed on the source region and the drain region. The GaN enhancement type MISFET device and the manufacturing method thereof have the characteristics that: a heterogeneous structure with high-concentration two-dimensional electron gas grows in an access region by a selected region epitaxial technique, so that the conducting channel plane of the grid can naturally align with that of the source and the drain, the resistance of the access region can be effectively reduced, and the threshold voltage of the grid of the device can be increased.

The invention discloses a transition structure from a dielectric suspended line circuit to a rectangular waveguide, and the structure comprises a first circuit board, a second circuit board, a third circuit board, a fourth circuit board, a fifth circuit board and a sixth circuit board, wherein the first, second, third, fourth, fifth and sixth circuit boards are sequentially riveted from the top to the bottom. The hollow-out cutting of the local areas of the second and fourth circuit boards is carried out to form a hollow-out cavity A and a hollow-out cavity B. The hollow-out cavity A, a metal layer on the front surface of the third circuit board, and a metal layer on the back surface of the first circuit board form a first suspended line air cavity structure. The hollow-out cavity B, a metal layer on the back surface of the third circuit board, and a metal layer on the front surface of the fifth circuit board form a second suspended line air cavity structure. The hollow-out cutting of the local parts of the first, second, fourth and fifth circuit boards is carried out to form a hollow-out cavity C, a hollow-out cavity D, a hollow-out cavity E and a hollow-out cavity F. The structure can achieve the integration of a novel dielectric integrated suspended line circuit and an external parts and testing equipment.

The invention discloses a tunnel rock soil deformation monitoring method, and particularly discloses a novel tunnel non-contact deformation monitoring method. A thickness R0 value of a plastic area is calculated. A sensor installing hole is drilled in a surrounding rock. One anchoring end is arranged at the tail end of an optical fiber single point displacement sensor. The anchoring end penetrates from the installing hole through the plastic area to be buried in an elastic area and fixed. The optical fiber single point displacement sensor is arranged in the plastic area. The top end, i.e. a flexible point, of a telescoping probe of the sensor is fixed on a tunnel excavation interface and used for measuring data. Deformation of the plastic area is calculated according to the value measured by the optical fiber single point displacement sensor. The monitoring data are transmitted to a tunnel port via optical fibers. During the process, consumption of manpower resource is low, the monitoring data are not manually influenced, loss and damage of the data in cable transmission can be effectively avoided, and an objective of automatic real-time monitoring can be realized via arrangement of the sensor device.

The invention discloses a wave-absorbing metamaterial, which comprises a plurality of stacked frequency selective surface (FSS) layers, and a reflecting plate located at the bottom of the bottom FSS layer along an electromagnetic wave incidence direction, wherein each FSS layer comprises a dielectric substrate and a dielectric loss layer. Frequency selection of an attenuating electromagnetic wave can also be achieved by virtue of FSSs while absorption and loss of the electromagnetic wave are achieved by designing the wave-absorbing metamaterial containing the FSSs; and furthermore, the electromagnetic wave transmitted to the bottom of the wave-absorbing metamaterial can return again to be absorbed by various FSSs by arranging the reflecting plate on the bottom FSS layer, thereby achieving a good broadband absorption effect.

The invention provides a speed guiding system and method that reduces signal intersection pausing, and belongs to the traffic management and control technical field; the speed guiding system comprisesthe following parts: a traffic signal control subsystem used for controlling a signal lamp phase in real time according to real time traffic conditions, receiving traffic signal phase request information from a speed guiding device, and returning the corresponding traffic signal phase information to the speed guiding device; the speed guiding device arranged on a vehicle and used for communicating the traffic signal control subsystem in real time, sending the traffic signal phase information request to the traffic control subsystem with certain frequency via communication, receiving feedbackinformation from the traffic signal control subsystem, and providing a suggestion speed value for the vehicle according to the feedback information. The speed guiding system and method can solve the problems that an existing method cannot control to reduce the signal intersection pausing problem; the speed guiding system and method can be applied to intersection speed guiding.

The invention refers to an Applicator apparatus for the surface application of liquid material, in particular hot melt adhesive, comprising a main body, and a nozzle arrangeme having at least one slot applicator nozzle for the delivery of the liquid material. According to the invention a clamping device for fixing the nozzle arrangement to the main body is comprised.

The invention discloses a broadband ultrathin wave-absorbing metamaterial for an aircraft visual window. A transparent material is used as a dielectric layer, and single-layer double-sided metamaterial structures are arranged on the two sides of the dielectric layer. Impedance matching is realized by utilizing the metamaterial structure, and increasing of incident waves and coupling generated between the upper layer and the lower layer of the metamaterial structure make circuit loss achieved, and the broadband ultrathin wave-absorbing metamaterial with good light transmittance is finally obtained, so the requirements of visible windows such as aircrafts are met; and in addition, the broadband ultrathin wave-absorbing metamaterial can reduce the thickness of the wave-absorbing material at the same time, and the frequency absorption range is widened.

The present invention relates to a method of suppressing appetite or promoting a stimulant effect in an individual in need thereof, comprising administering to the individual per 24 hour period an effective amount of one or more alkali metals selected from the group consisting of one or more sources of cesium, one or more sources of rubidium, one or more sources of lithium, and combinations thereof. The present invention further relates to weight loss or stimulant compositions comprising one or more alkali metals.

The invention provides a composite compensation device for long-distance sparse power supply. The input is a power supply line input end, and the output is a power supply line output end. The device comprises a voltage boosting system and an electric energy quality boosting system, wherein the voltage boosting system comprises a voltage boosting compensation transformer, a voltage boosting power electronic converter and a voltage boosting control unit; and the electric energy quality boosting system comprises a contactor, an electric energy quality boosting compensation transformer, an electric energy quality boosting power electronic converter and an electric energy quality boosting control unit. According to the invention, the power electronic converter and the compensation transformer are used for injecting a current and a voltage into a power grid and performing real-time control, thereby achieving the comprehensive power quality improvement of power harmonic waves, power factors, three-phase imbalance compensation and the like and the voltage compensation function of a sparse power utilization area of a long power transmission line. The device has important significance on power supply radius extension, investment saving and power grid safety of the sparse power utilization area.

The invention discloses a system and a method for measuring the loss and the absorption of an optical fiber. The system comprises a broadband light source, an optical switch, a first controller, an optical fiber combiner, a multi-mode optical fiber, and a spectrometer. The signal end of the optical fiber combiner is connected to the first output end of the optical switch. The pump end of the optical fiber combiner is connected to the second output end of the optical switch. One end of the multi-mode optical fiber is connected to one end of the optical fiber to be measured. The other end of themulti-mode optical fiber is connected to the spectrometer. The other end of the optical fiber to be measured is used for being connected to the output end of the optical fiber combiner. The first controller is connected to the control end of the optical switch. The signal light output by the broadband light source passes through the optical switch, and is selected by the first controller to be output from the first output end of the optical switch, and then injected into the signal end of the optical fiber combiner, or output from the second output end of the optical switch, and then injectedinto the pump end of the optical fiber combiner. The optical signal is injected into the optical fiber to be measured after passing through the optical fiber combiner, and is received by the spectrometer through the multi-mode optical fiber.

The invention discloses a middle and large-sized air purification system adopting coupling of solid-state fans to carry out adsorption purification, which comprises a cabinet body, an adsorption purification unit and a gas transmission unit. The gas transmission unit provides power for air circulation in the system; air flow can be greater than 15m<3> / h; the gas transmission unit comprises an air duct for connecting the cabinet body and the adsorption purification unit, first solid-state fans for providing gas circulation power, a gas distributor and a driving power supply; the gas distributor comprises at least three air supply pipes connected in parallel, a solid-state fan mounting pipe connected with the air supply pipes and an air supply pipe arrangement device for mounting the air supply pipes; pipelines connected with the air supply pipes are arranged in the solid-state fan mounting pipe; one or more first solid-state fans are mounted in each pipeline. According to the middle and large-sized air purification system disclosed by the invention, no vibration or noise is generated in the air flow transportation process; the solid-state fans and the air supply pipes are easy to integrally couple, so that a diameter of an air supply pipeline can be greatly reduced, and mounting cost and a mounting space are saved; parameters in the transportation process, such as a flow rate, flow and the like, are easy to regulate.

The invention relates to a novel high-speed two-for-one twister control system and method based on brushless direct current motors. A conventional two-for-one twister control system controls the rotating speeds of other motors by only controlling a frequency converter. The novel high-speed two-for-one twister control system comprises advanced reduced instruction set computer (RISC) machine (ARM) processors STM32F103, a human-computer interaction interface module, a 485 communication module, an intelligent power module (IPM) and a brushless direct current motor module. The human-computer interaction interface module and the 485 communication module are respectively connected with two serial communication interfaces of each ARM processor; pulse width modulation (PWM) pins of each ARM processor are connected with an input end of the IPM; U, V and W output pins of the IPM are connected with the brushless direct current motors in one-to-one correspondence; and a current and speed feedback end of each path of brushless direct current motor is connected with input pins of the ARM processors in the path and other paths. By the system and the method, the rotating speed of each brushless direct current motor in a two-for-one twister system can be controlled cooperatively.

The invention discloses a trans-IDC (internet data center) data transmission system. The system comprises a manufacturer server, a consumer server, a local IDC forwarding server, a remote IDC forwarding server, a local router and a remote router, wherein information sent by the manufacturer server is converted into a data packet by the local router, the data packet is sent to the local IDC forwarding server, the local IDC forwarding server rewrites the header of the data packet by using an uio mechanism, processes the data packet and then sends the data packet to the remote IDC forwarding server via a WAN (wide area network), and the remote IDC forwarding server recovers data of the data packet according to local contrast information and then sends the data packet to the consumer server. The invention further provides a trans-IDC data transmission method.

The invention belongs to the technical field of power equipment, particularly relates to a method for preparing a high-strength aluminum alloy wire for a novel energy-saving wire, in particular to a method and process for preparing a high-strength aluminum alloy wire for an energy-saving wire. The method or process is mainly used for producing or preparing the high-strength aluminum alloy wire for the high-strength aluminum alloy wire. The method comprises the following process steps of a high-strength aluminum rod thermal treatment process, a high-strength aluminum wire drawing process and a high-strength aluminum wire aging thermal treatment process. The high-strength aluminum alloy wire with the mechanical property and conductive property both meeting the technical index standard requirement and good comprehensive performance can be produced. The strength is 320 MPa or above, and the conductivity is larger than 54%IACS. The process is relatively simple, operation is easy, the produced aluminum alloy wire is stable in performance, and no very complex technical link exists. By means of the high-strength aluminum alloy wire produced through the process, the line loss of long-distance transmission can be reduced, the aim of energy saving and emission reducing can be achieved, and environment friendliness can be achieved.

The invention discloses an omnidirectional radiation vibrator array antenna for loaded coupled feeding, which relates to an omnidirectional radiation vibrator array antenna and is used for solving the problems of small bandwidth, low unit electrical length gain and poor omni-directivity existing in the conventional omnidirectional antenna. The front face of a medium plate 1 is printed with two groups of vibrators, a coplanar waveguide central feeder line, a feeding port matching branch knot and radiation terminal load; the upper end of the coplanar waveguide central feeder line is connected with the radiation terminal load, and the lower end of the coplanar waveguide central feeder line is connected with the feeding port matching branch; two groups of vibrators are arranged one above the other; each group of vibrators comprises a left side vibrator, a right side vibrator and two loaded horizontal metal strips; the left side vibrator and the right side vibrator are arranged symmetrically on both sides of the coplanar waveguide central feeder line; the two loaded horizontal metal strips are arranged symmetrically on the outer sides of the left side vibrator and the right side vibrator; the two ends of an upper horizontal feeder line are connected with two metallized through holes above respectively; and the two ends of a lower horizontal feeder line are connected with two metallized through holes below respectively. The omnidirectional radiation vibrator array antenna belongs to a printed antenna for communication.

The invention discloses a forge rolling machine directly driven by frameless permanent magnet synchronous motors. An upper rolling wheel drive shaft and a lower rolling wheel drive shaft are connectedwith the first frameless permanent magnet synchronous motor, and the first frameless permanent magnet synchronous motor is fixedly installed on an upper rolling wheel support and a lower rolling wheel support through motor brackets; a screw rod shaft of a screw rod is connected with the second frameless permanent magnet synchronous motor, the other end of the screw rod is connected to the upper rolling wheel support through a nut, and the second frameless permanent magnet synchronous motor is fixed to a machine frame through a motor bracket. The frameless permanent magnet synchronous motors are adopted as rolling wheel drive motors, so that drive intermediate links like a transmission part are reduced, the drive mode and structure are simplified, the drive efficiency is improved, direct driving of rolling wheels is achieved, the running reliability of the machine can be improved, the manufacturing cost and the usage cost are reduced, and the energy loss is reduced.

The invention discloses a bridge structure intelligent reinforcing assembly and a fiber grating sensor combining and bonding method. The bridge structure intelligent reinforcing assembly comprises a carbon fiber rib material, a coating portion coating the fiber grating sensor and bonded to the surface of the carbon fiber rib material, an anchoring structure for fixing both ends of the carbon fiber rib material and a beam body, and a fiber grating demodulator connected with the fiber grating sensor; wherein the fiber grating sensor comprises a plurality of multimode or single-mode optical fibers arranged in parallel and provided with one or more fiber bragg gratings. The bridge structure intelligent reinforcing assembly can improve the survival rate of the fiber grating sensor combined and bonded to the carbon fiber rib material, reduces the production cost of the intelligent carbon fiber rib material, uses intelligent monitoring technology to supervise the construction quality of a prestress carbon fiber reinforced bridge structure, and realize long-term monitoring of the bridge structure reinforcement performance and health safety.

The invention belongs to the field of energy conservation of thermal power stations, particularly discloses an energy-saving heat supply system with a middle-positioned generator and a back-positioned back-pressure machine. The energy-saving heat supply system comprises a high and medium-pressure steam turbine cylinder and a low-pressure steam turbine cylinder which are connected via a single shaft. The energy-saving heat supply system is characterized in that the low-pressure steam turbine cylinder is connected with the generator, an exciter is coaxially arranged at the tail end of the generator and communicated with the back-pressure machine via a synchronous automatic gear shift clutch, a steam exhaust port of the high-and-medium-pressure steam turbine cylinder is communicated with the low-pressure steam turbine cylinder and the back-pressure machine via medium and low-pressure communication tubes, and a valve set A and a valve set B are respectively arranged on the communication tubes. The energy-saving heat supply system with the middle-positioned generator and the back-positioned back-pressure machine is simple in structure, convenient to use, reasonable in design and flexible in application, energy loss of the heat supply system can be effectively reduced, lost energy can be fully utilized, reliability of the whole system is improved, and investment is saved.

The invention relates to a device and a method for limiting the junction temperature and reducing loss of a traction converter switching device. The device comprises a power module, a DSP and a CPLD.The method comprises the following steps: S1, the DSP collects a three-phase output current signal and a radiator temperature signal, and the CPLD calculates the switching frequency of an IGBT; S2, the DSP calculates the collector current in the conduction process of the IGBT according to the three-phase output current signal, and calculates the on-state loss and switching loss according to the collector current; S3, the DSP calculates the heating power of the IGBT according to the on-state loss and the switching loss; S4, the calculated heating power is imported into a thermal resistance model so as to obtain real-time junction temperature data of the IGBT; and S5, if the junction temperature data is higher than a set threshold, the switching frequency of the IGBT is controlled through the CPLD, and thus, the switching frequency of the IGBT is reduced. Therefore, loss is reduced, and the maximum junction temperature of the IGBT is limited.

The invention relates to a multifunctional regenerative blood purification system. The multifunctional regenerative blood purification system comprises a blood purification mechanism, a dialysate supplementing mechanism and a toxin adsorption mechanism and specifically comprises two high-throughput dialyzers, ultrafiltration pumps, power pumps, arterial pots, a vein pot, dialysis bags, an albumin container, a carbon absorption pillar, a resin absorption pillar and a waste liquid tank. During work, water-insoluble toxins combined with albumin in blood are cleared away through multiple adsorption across a fiber membrane, water-soluble medium molecule and micromolecule toxins in the blood are cleared away through continuous blood purification, electrolyte balance is effectively realized by means of a continuous blood purification technology, and regeneration and repeated use of an adsorbent (such as activated carbon and resin) are realized by the aid of desorption of the adsorbent. By means of the system, a few absorbents are consumed, a variety of toxins are cleared, electrolyte balance is rapid, the edema removal effect is good, the treatment time is short, the system cost is low, the safety is good, and personal treatment can be realized.

The invention relates to an ultrasonic flaw detector with high detection accuracy. The detector comprises a shell, a touch screen, at least two buttons and at least two moving wheels, further comprises a detection mechanism, a clearing mechanism and a central control mechanism, wherein the clearing mechanism comprises a connection port, a pedestal, a polishing block, a switching component, two lifting components and two power components, and the detection mechanism comprises a driving component, a driving shaft, a second gear, a moving block, a transmission bar, a hydraulic cylinder, a connection column and a probe. In the ultrasonic flaw detector with high detection accuracy, with the clearing mechanism, a surface of a workpiece can be processed before detection, thus, the surface of theworkpiece can be kept clean and flat, and detection accuracy of the ultrasonic flaw detector is improved; by the detection mechanism, automatic regulation of a probe angle can be realized, automationdegree of the ultrasonic flaw detector is improved, and detection efficiency of the ultrasonic flaw detector is also improved.