3914 results about "Annular array" patented technology

A placing seat is fixed to the upper portion of a base through a plurality of supporting columns in a suspended mode, a plurality of linear sliding grooves distributed in an annular array mode are formed in the placing seat, and an inner supporting piece and an outer pressing piece are installed in each linear sliding groove; a clamping push plate is connected between the multiple supporting columns in an up-down sliding and sleeving mode, a plurality of pushing pieces are installed on the clamping push plate, the pushing pieces are in sliding connection with the inner supporting piece and the outer pressing piece, and a plurality of position adjusting mechanisms distributed in an annular array are installed below the containing base in a sliding mode; a plurality of inner supporting pieces and outer pressing pieces which are distributed in an annular array mode are arranged above the containing base, two positioning rollers on the inner supporting pieces and the outer pressing pieces can synchronously move in the opposite directions from the inner side and the outer side, the inner wall and the outer wall of a workpiece are clamped at the same time, clamping force appears in pairs, radial force is offset, the workpiece mainly bears uniform centripetal force, and the deformation risk is greatly reduced.

The invention relates to the technical field of reaction kettles, and discloses a reaction kettle device for synthesizing benzohydroxamic acid, the reaction kettle device comprises a reaction kettle body and a stirring structure arranged at the top of the reaction kettle body, a discharging pipe is arranged at the discharging end of the reaction kettle body, and supporting legs are arranged on the outer wall of the bottom of the reaction kettle body; three mounting plates distributed in an annular array are fixedly mounted on the inner wall of the reaction kettle body, a driving screw rod is rotationally mounted on the top surface of each mounting plate, the top end of each driving screw rod penetrates through the top surface of the reaction kettle body, and a guide frame is in threaded connection with the outer wall of each driving screw rod; when the feeding cylinder rotates, the transmission shaft is in intermittent contact with the protruding block, negative pressure adsorption and quantitative discharge of auxiliary materials are achieved through vertical sliding of the piston plate and cooperation of the one-way valve, it is guaranteed that raw materials can be accurately injected according to needs through the structural design, errors caused by manual control adding are avoided, the accuracy of the reaction proportion is guaranteed, and the production efficiency is improved. And the product quality stability can be improved.

The invention discloses a pipe jacking construction device and method based on an artificial freezing technology, and belongs to the technical field of pipe jacking construction, the pipe jacking construction device comprises a base, a side plate vertically fixed at the rear end of the base, hydraulic oil cylinders symmetrically mounted at the two ends of the inner side of the side plate, and a jacking table fixed between the output ends of the hydraulic oil cylinders. The strip-shaped grooves are evenly formed in the outer side edge of the top table in an annular array mode, the sliding bases are slidably arranged in the strip-shaped grooves, the hydraulic chucks are rotatably installed on the sliding bases, the hydraulic chucks can be used for fixing the drill rod during use, the drill rod is driven to rotate through the drilling motor, and therefore in the using process of the device, the drilling efficiency of the drill rod is improved. A drill rod can be inserted into soil, a hole for installing a freezing pipe is formed in the outer side of a pipe jacking channel so that the freezing pipe can be conveniently inserted and installed, the functionality of the device is improved, in addition, when the device is used, the interval adjusting mechanism is matched, the hole opening position during freezing pipe installation can be adjusted according to the outer diameter of the pipe jacking, and practicability is higher.

The invention provides an electromagnetic quasi-zero stiffness vibration isolator and a control method, and belongs to the technical field of vibration isolation. The vibration isolator comprises a base, a positive stiffness mechanism, a negative stiffness mechanism, a positive and negative stiffness connecting mechanism and a dynamic control module. The positive stiffness mechanism adopts a hydraulic spring to provide basic positive stiffness; the negative stiffness mechanism comprises a plurality of stator units distributed on the base in an annular array and a rotor suspended in the center of a magnetic field of the stator units, and is used for generating nonlinear negative stiffness; the top end of the hydraulic spring supports a load through the bearing table and keeps a preset gap with the inner wall of the rotor; the positive and negative stiffness connecting mechanism realizes displacement transmission and cooperative adjustment; the dynamic control module comprises a displacement sensor and a controller, the sensor collects displacement signals, and the controller adjusts excitation currents of the stator units according to the signals and dynamically adjusts electromagnetic force, so that the vibration isolator is kept in a quasi-zero stiffness state. The quasi-zero stiffness state can be still kept when the load changes, load self-adaption low-frequency vibration isolation is achieved, and the system stability and the vibration isolation performance are improved.

The invention relates to the technical field of industrial detection, and provides a real-time monitoring method and device for slag in a boiler. A plurality of high-temperature-resistant cameras are installed around an observation opening in the bottom of a boiler in an annular array mode, the slag accumulation condition in the boiler is collected in real time through the high-temperature-resistant cameras, and a single-view-angle image is obtained; evaluating the visual field states of the high-temperature-resistant cameras according to the single-visual-angle images, and determining a plurality of to-be-modeled images from the plurality of high-temperature-resistant cameras; and generating slag point cloud data by using the at least one to-be-modeled image, and performing three-dimensional reconstruction on the slag point cloud data to obtain the slag pile volume. According to the method, the slag falling condition of the boiler bottom of the power plant boiler is monitored and recognized in real time, and the problems that the slag falling at the boiler bottom cannot be detected in real time depending on manpower, the detection accuracy is insufficient, the three-dimensional form of the slag falling at the boiler bottom cannot be synthesized by detecting the slag falling at the boiler bottom through sensor equipment, and practicability is poor are solved.

The invention relates to the technical field of corrugated board detection, and particularly discloses a corrugated board stacking defect detection method and system based on machine vision, and the method comprises the steps: carrying out the time-sharing triggering of a side annular LED array light source and a top vertical diffusion light source of a stacking transmission line, and enabling an industrial CCD camera to synchronously obtain reflected light, transmission light and visible light channel images; fusing image features to generate a defect response map; eliminating corrugated texture interference through adaptive Gaussian filtering; dynamically adjusting high and low thresholds based on the maximum value proportion of the defect response map in combination with illumination; segmenting and merging candidate defect areas and calculating initial stacking defect indexes; and eliminating illumination artifacts in combination with the structural similarity index to finally obtain a real defect index. According to the method, the stacking defect detection accuracy is effectively improved, the missed and false alarm rate is reduced, the detection requirements of illumination fluctuation and bent edge washboard defects can be met, and the production quality control requirements of corrugated boards are met.

The invention discloses a quick assembly and disassembly type modular telescopic supporting structure, and belongs to the field of general machinery design. The problems that a traditional supporting structure is low in disassembly and assembly efficiency, poor in adjusting precision and inconvenient to store and transport are solved. The structure comprises an outer cylinder, a self-locking telescopic structure, a magnetic suction quick-connection node structure and folding devices, the bottom end of the outer cylinder is movably connected with the magnetic suction quick-connection node structure, an inner cavity is connected with the self-locking telescopic structure in a clamped mode, and the folding devices are annularly fixed to the surface of the magnetic suction quick-connection node structure. The self-locking telescopic structure adopts a self-locking telescopic unit of a hexagonal nested sleeve, and is matched with an elastic ratchet bar, a slope clamping block and a compression spring, so that single-hand downward pressure stepless regulation is realized, locking is realized by virtue of friction and occlusion, the vertical deviation is small, and the bearing capacity is high; six permanent magnets are arranged at the bottom and an inner cavity of the magnetic attraction quick connection node, are distributed in an annular array mode and are quickly spliced by rotating and clamping the bottom end of an outer cylinder, electric power is not needed, and the bolt risk is avoided. And the folding storage mechanism supports quick disassembly of the supporting legs and is convenient to store and carry.

The utility model discloses a wind power tower hoisting auxiliary positioning device, which belongs to the technical field of wind power towers and comprises a wind power tower body, an auxiliary positioning component is arranged at one end of the wind power tower body, and a plurality of fixing rings are welded on the inner wall of the other end of the wind power tower body in an annular array manner. The auxiliary positioning assembly comprises a fixed clamping lantern ring cover clamped to the peripheral side of one end of the wind power tower barrel body. The upper end fastening component is arranged on the peripheral side of the fixed clamping lantern ring cover, the lower end fastening assembly is arranged in the fixed clamping lantern ring cover, extends to the other end of the wind power tower drum body along an inner cavity of the wind power tower drum body and is in fastening connection with the fixed ring, and a lifting hook retracting and releasing assembly is arranged in the fixed clamping lantern ring cover. A clamping and clamping cavity used for clamping and containing the top end of the wind power tower barrel body is formed in the fixed clamping lantern ring cover. According to the utility model, the safety of the hoisting operation is improved by improving the aspects of multi-point fixing, synchronous supporting and accurate positioning in the hoisting process of the wind power tower drum.

The invention relates to the technical field of radio frequency coils, and particularly discloses a device for improving the magnetic field intensity of a partial region of a radio frequency coil, and the device comprises an outer coil which serves as a main magnetic field generation element and is used for generating a basic magnetic field in the internal space of the device; the plurality of metal small rings are uniformly and coaxially distributed in the internal space of the outer side coil in an annular array mode, and each metal small ring has one or two of the following freedom degree adjusting modes at the same time so as to adapt to scanning samples of different sizes: radial stretching: each metal small ring can be independently subjected to stretching adjustment along the radial direction of the metal small ring; and axial rotation: each metal small ring can independently rotate around the tail end of the metal small ring. The method has high adaptability to scanning samples of different sizes and shapes, can achieve the remarkable enhancement of a magnetic field in a specific area, and effectively improves the radio frequency excitation efficiency and the receiving signal-to-noise ratio.

The invention discloses a self-inspiration inclined section type venturi stirring paddle which comprises a hollow main shaft, a plurality of venturi tubular paddle blades are annularly arrayed on the outer wall of a gas cavity at the bottom of the hollow main shaft, each venturi tubular paddle blade sequentially comprises a contraction section, a throat part and a diffusion section in the fluid direction, an inclined section is formed in the pipe wall of each contraction section, and the inner wall of each contraction section is provided with a gas inlet. The oblique section cutting plane extends to the upstream of the throat part from the inlet end face of the contraction section, and a mounting included angle is formed between the axis of the Venturi tubular paddle and the axis of the hollow main shaft. Under the flow guide effect of the inclined section cutting plane, liquid is efficiently entrained and sucked into the contraction section; in the throat area, external air is continuously sucked in through the connecting pipe and is instantly sheared into fine and dense bubble groups by the high-speed liquid flow; meanwhile, due to the existence of the fixed mounting included angle, the gas-liquid mixture sprayed out of the diffusion section presents an obvious inclined jet flow form, and the gas-liquid mixture flows downwards and radially in a combined manner under the leading action of the gas-liquid mixture, so that a bubble group is effectively conveyed to the lower part and the peripheral area of the kettle body.

The invention discloses a copper wire tinning method for tinned copper stranded wire production, which relates to the technical field of metal surface treatment, and comprises the following steps: releasing a copper wire to an ionic liquid electrophoresis tank, applying an electric field to strip surface oxides, and then carrying out three-stage countercurrent rinsing to generate a clean copper wire; putting the clean copper wire into a composite plating tank, monitoring the tin liquid viscosity and the copper wire linear speed in real time, calculating the magnetic field gradient, and controlling tin crystal oriented growth according to the magnetic field gradient to generate an oriented crystallization tinned copper wire; the surface temperature of the directionally crystallized tinned copper wire is monitored in real time and compared with a preset temperature threshold value, a temperature permission trigger signal is generated, the annular array spray gun is triggered to work according to the temperature permission trigger signal, and a densified tinned copper wire is generated; and the densified tinned copper wire is scanned through a micro-focus CT scanner, a gap three-dimensional point cloud picture is generated, the gap size and the normal angle of the gap three-dimensional point cloud picture are analyzed, the optimal spraying parameters are recognized, and the passivation film tinned copper wire is generated.

The invention provides upper fork burr treatment equipment which comprises a workbench, a top disc is arranged at the top of the workbench, and a plurality of positioning grooves distributed in an annular array are formed in the top disc; the two sides of the multiple positioning grooves are each provided with a pressing and positioning mechanism. The burr grinding and removing mechanism is located above one side of the top disc, and the burr grinding and removing mechanism is installed on the side of the workbench; the burr grinding mechanism comprises a grinding head, and the outer side of the grinding head is sleeved with a telescopic cylinder. The gas injection mechanism communicates with the top side of the telescopic cylinder through a conveying pipeline; and the rotation driving mechanism is arranged in the workbench, and the rotation driving mechanism is connected with the middle of the top disc. The rotary driving mechanism drives the top disc to rotate, the upper forks placed in the multiple positioning grooves are sequentially moved to the burr grinding and removing mechanism, batched upper fork burr treatment is achieved, the machining efficiency is improved, the air injection mechanism, the conveying pipeline and the telescopic cylinder are arranged, and automatic blowing and cleaning can be conducted on a grinding head of the burr grinding and removing mechanism.

The tool for continuous machining of the parts comprises a supporting base, a plurality of adjusting grooves are formed in the top of the supporting base in an annular array mode, sliding rods are fixedly connected to the inner walls of the adjusting grooves, the sliding rods are slidably sleeved with adjusting blocks, and the tops of the adjusting blocks are fixedly connected with a mounting frame; according to the tool for continuous machining of the parts, the adjusting mechanism, the adjusting block, the mounting frame, the mounting block and the clamping blocks are arranged, so that the function of driving the multiple sets of clamping blocks to conduct synchronous adjusting and clamping is achieved, it is guaranteed that when the parts are clamped, positioning is accurate, stress is uniform, the clamping blocks can be rapidly disassembled, assembled and replaced according to needs, and the machining efficiency is improved. The adaptation effect is better; the dust collection cover can be driven to swing in a reciprocating mode through the arrangement of the swing mechanism, sweeps in a machining area can be evenly cleaned in cooperation with multiple sets of dust collection openings in the dust collection cover, the influence of attached and accumulated sweeps on the follow-up machining precision is effectively avoided, and the service life of equipment is prolonged.

The invention relates to the technical field of hydrogen fluoride adsorption, and particularly discloses a hydrogen fluoride adsorption tower which comprises a tower body, a gas inlet pipeline arranged on the lower section of the tower body, a gas outlet pipeline arranged on the upper section of the tower body, a plurality of layers of adsorption beds arranged in the tower body in the vertical direction, and adsorbents arranged on the adsorption beds. The material changing mechanism comprises a waste material pipe rotationally arranged in the tower body, a driving part I for driving the waste material pipe to rotate, a plurality of inverted conical funnels respectively arranged below the plurality of layers of adsorption beds and a plurality of trapping boxes arranged on the waste material pipe, and the waste material pipe penetrates through all the adsorption beds; a plurality of spiral scrapers for driving the adsorbent to radially flow are arranged on the waste pipe, the upper end of the inverted-cone-shaped funnel exceeds the outer edge of the adsorption bed, an annular air jet hole is formed in an outlet in the bottom of the inverted-cone-shaped funnel, and the trapping boxes surround the waste pipe in an annular array; the device has the beneficial effects that saturated aluminum oxide is separated in time, so that the adsorption effect of the aluminum oxide is improved.

The invention relates to an anti-interference high-selectivity omnidirectional planar filtering antenna, a filtering processing method and application, and the planar filtering antenna comprises a metal radiation layer, a first dielectric substrate, a first coupling layer, a second dielectric substrate and a second coupling layer which are sequentially stacked. The second dielectric substrate is provided with a plurality of metalized through holes which are distributed in an annular array mode and define a substrate integrated cavity with the first coupling layer and the second coupling layer, the metalized through holes divide the second coupling layer into an inner side patch and an outer side ring piece, and the inner side patch is evenly provided with a plurality of resonance grooves; and a feed probe penetrating and extending to the second dielectric substrate is arranged at the center of the bottom of the metal radiation layer. According to the invention, the substrate integrated waveguide technology is adopted, the substrate integrated cavity is formed, and a high-selectivity filtering effect is realized by utilizing the characteristic of high Q value, so that the interference of out-of-band signals is effectively inhibited, and the advantages of the patch antenna and the substrate integrated cavity are effectively combined.

The invention relates to the technical field of railway construction engineering, and discloses a structural concrete strength detection device for railway construction engineering, which comprises a circular top seat, a portal frame is fixed on the circular top seat, and a base is fixed at the bottom of the portal frame; the device further comprises multiple groups of adjusting racks mounted at the bottom of the circular top seat, the multiple groups of adjusting racks are distributed in an annular array, sliding grooves matched with the adjusting racks are formed in the bottom of the circular top seat, and sampling units used for detecting structural concrete are fixedly mounted at the bottoms of the adjusting racks. When the device is used, the first gear ring rotates to drive the multiple groups of first gears to rotate, so that the relative distance between the multiple groups of adjusting racks is adjusted, the relative distance between the multiple groups of sampling units can also be adjusted, meanwhile, coring samples and data at different positions on structural concrete can be obtained, and the diversity of measured data is improved.

The utility model discloses super-strong steel chemical degreasing powder drying equipment, and relates to the technical field of drying equipment. The device comprises a drying assembly, and an inner cavity of the drying assembly is fixedly connected with a mixing assembly. The heating blocks embedded in the inner wall of the drying box are distributed in an annular array mode, oil removing powder in the drying box can be heated in a full-surrounding mode, compared with traditional bottom or single-side heating, the uniformity of a temperature field in the box is remarkably improved, and the problem of component decomposition or low-temperature caking caused by local overheating is solved; when the planetary gear stirring piece drives the auxiliary stirring rod to revolve around the first transmission shaft, rotation is achieved through meshing of the driven gear and the driving gear ring, and a three-dimensional stirring track of revolution and rotation is formed; the up-down reciprocating piece pushes the main stirring rod to do periodic up-down motion through the cam, so that materials are subjected to transverse shearing mixing and longitudinal stirring in the drying process, the material accumulation dead angle is effectively broken, and the heat exchange efficiency is improved.

The invention discloses a gas mixing and uniformizing device for hydrogen fluoride gas phase etching, which comprises a device body, the device body internally comprises a first-stage mixing cavity, a second-stage mixing cavity, a third-stage mixing cavity and a reaction cavity which are sequentially communicated, the first-stage mixing cavity is arranged at the top of the device, and three groups of gas inlet pipelines are respectively arranged outside the device and are communicated with the first-stage mixing cavity; a plurality of groups of spiral blades which are arranged in an annular array are arranged in the second-stage mixing cavity, an annular hole partition plate is arranged at the communication part of the third-stage mixing cavity and the second-stage mixing cavity, a porous partition plate is arranged between the third-stage mixing cavity and the reaction cavity, and flow guide holes which are communicated up and down are formed in the annular hole partition plate and the porous partition plate; a manual sample inlet and a manipulator sample inlet are respectively arranged in front of and behind the reaction cavity, and an exhaust port is arranged at the bottom of the reaction cavity. The method has the advantages that the efficient mixing and uniform distribution of the ethanol steam, the hydrogen fluoride gas and the carrier gas can be realized, and the stability and the etching quality of the etching process are improved.

The present application relates to optical fiber surface coating treatment device technical field, especially to a kind of optical fiber metal coating spraying device, including the spraying mechanism of lower shell, shunt chamber, combustion chamber and ring spray component composition, and for driving the linear drive mechanism and rotary drive mechanism of rotary movement of spraying mechanism.The present application is by being provided with independent oxygen passage, hydrogen passage and metal powder passage in shunt chamber, and by corresponding oxygen hole, hydrogen hole and metal powder hole spray into combustion chamber, it is realized in the state that oxygen content is higher, to metal powder realizes rapid melting, improves the purity of metal molten liquid;And by the ring array side nozzle on annular jet pipe, it is realized to the overall metal coating of optical fiber surface;While improving the controllability of optical fiber surface metal coating quality and coating thickness and uniformity.

The invention belongs to the technical field of laser processing, and particularly relates to a laser marking production device for iron tower steel part processing, which comprises a laser marking equipment main body, a laser head is arranged on the laser marking equipment main body, and the outer side of the laser head is movably sleeved with an annular outer pipe with the same circle center; the annular outer pipe is fixed to the outer side of the laser head through a height adjusting assembly, the position, facing the center of the annular outer pipe, of the bottom end of the annular outer pipe is fixedly connected and communicated with a plurality of inner nozzles arranged in an annular array, and the middle of the bottom end of the annular outer pipe is fixedly connected and communicated with a plurality of middle nozzles arranged in an annular array. And a plurality of outer nozzles which are arranged in an annular array are fixedly connected and communicated to the position, far away from the center of the annular outer pipe, of the bottom end of the annular outer pipe. When the air curtain form is switched, the nitrogen flow is synchronously adjusted through the manual switching structure, the smaller the marking range is, the smaller the flow is, gas waste is avoided, and it is guaranteed that the air curtain protection strength is matched with the marking range.

The invention relates to the technical field of steam turbine blade measurement, in particular to a special bidirectional measuring tool for a conical surface of a steam turbine blade, which comprises a detection table and a driving motor fixedly mounted on the inner top surface of the detection table, a detection disc is fixedly mounted at the output end of the driving motor, and a bracket is arranged at the side edge of the side surface of the detection table; a conical surface detection scanner is fixedly installed at the top end of the support, an installation structure is arranged between the support and the detection table, four installation plates distributed in an annular array are fixedly installed on the top face of the detection disc, and positioning assemblies are arranged on the installation plates. The automatic detection device has the beneficial effects that the detection disc is driven by the driving motor to rotate, the scanner is automatically reset in cooperation with linkage of the shifting rod, the shifting plate and the inclined push plate, the rotating seat is automatically overturned and reset after detection is completed, feeding of the next batch is facilitated, automatic circulation of feeding, detection, discharging and reset is formed, manual intervention is reduced, and the overall detection continuity is improved.

The invention relates to the field of angle measurement, in particular to a positioning measurement device for pipe jacking construction, which comprises a working well and a pipe body mounted on the lower part of the side surface of the working well in a penetrating manner, a turnover piece is mounted on the inner side surface of the working well, and the end part of the turnover piece is connected with a center frame; the axis of the center frame is aligned with the center point of one end of the pipe body, a centering frame is coaxially arranged at the other end of the interior of the pipe body, a plurality of inclined fixing frames are obliquely arranged on the outer side of the center frame in an annular array mode, the inclined fixing frames are attached to the inner edge of one end of the pipe body, and a plurality of wheel frames are arranged on the outer side of the centering frame in an annular array mode. And centering wheels are installed at the two ends of the wheel frame and attached to the inner wall of the pipe body, and a detection piece is installed at the end of the center frame. According to the invention, the detection convenience is improved, the device can adapt to pipe bodies with different diameters, the detection requirement is met, and meanwhile, the normal operation of pipe jacking construction operation is ensured.

This invention discloses a comprehensive detection device for surface defects in copper pipes, belonging to the technical field of copper pipe inspection devices. The invention includes a detection disc, with several sets of inspection devices arranged in a ring array on the outer periphery of the disc's side. Corner-mounted push cylinders are symmetrically arranged on the inner walls of the four corners of each inspection device, and movable inspection pads are fitted between these cylinders. This invention, by creating a sealed environment for the copper pipe and implementing pressurized testing, helps to promptly detect latent defects such as micropores and hidden defects, avoiding safety hazards caused by these invisible defects during subsequent operation under medium connection or negative pressure conditions. The subsequent re-inspection device performs a secondary closed-loop inspection, including multi-round scanning and contact rotation detection. Abnormal copper pipes can be returned for re-inspection. The re-inspection pads can adaptively adjust their spacing according to the length of the copper pipe, adapting to different models, ensuring both inspection efficiency and copper pipe integrity, while also improving result accuracy and equipment applicability.

The utility model provides an automatic stamping forming machine for metal chair legs, and belongs to the technical field of stamping equipment. The automatic stamping forming machine for the metal chair legs comprises a forming machine body part, a movable clamping mechanism and a discharging part. The seat frame, the stamping assembly and the rotating table are all installed above the rack, the multiple lower dies are arranged above the rotating table in an annular array mode, and the rotating table drives the multiple lower dies to rotate and adjust. And the movable clamping mechanism is mounted on the seat frame. The support is fixed to one side above the machine frame, and the discharging bin is obliquely arranged above the support. A single operator continuously places workpieces on the multiple lower dies above the rotating table, and the stamping assembly is matched with the lower dies to conduct stamping machining on the workpieces. And after stamping machining of the workpiece is finished, the workpiece is rotated and moved to the next station, and the stamped workpiece is transferred to the discharging bin for discharging under cooperation of the movable clamping mechanism. Compared with original punch forming equipment, continuous feeding can be completed under operation of a single person, and the workpiece punch forming efficiency is improved.

The application discloses a kind of magnetoacoustic electric imaging method, system, equipment, medium and product, it is related to magnetoacoustic electric imaging field, the method comprises: according to the number of array elements of annular array probe Randomly generate multiple sets of space delay coding;Space delay coding is set on the annular array probe, and the corresponding ultrasonic wave of space delay coding is emitted by annular array probe;The delay of each array element is different, and the ultrasonic wave waveform emitted by each array element is identical;While array element emits ultrasonic wave, the magnetoacoustic electric signal excited by space delay coding is collected by electrode, and the ultrasonic wave emission of each set of space delay coding corresponds to the collection of one magnetoacoustic electric signal;According to each set of space delay coding, corresponding acoustic vibration velocity field is simulated and generated;According to the acoustic vibration velocity field corresponding to all space delay coding, system matrix is determined;According to system matrix and magnetoacoustic electric signal, reconstruct conductivity image, realize magnetoacoustic electric imaging, and the application improves spatial resolution and improves imaging effect.

The invention relates to the technical field of pipeline detection, in particular to a pipeline leakage detection method and device based on bionic perception, and the device comprises a support frame, two leather cup structures and a plurality of groups of detection assemblies. The supporting frame is of a tubular structure and is arranged in a to-be-detected pipeline. The two leather cup structures are located at the two ends of the supporting frame respectively, and the outer diameter of each leather cup structure is slightly larger than the inner diameter of a to-be-detected pipeline to form interference fit. The multiple groups of detection assemblies are distributed at intervals in the length direction of the supporting frame, and the detection assemblies in the same group are arranged in an annular array around the supporting frame; when the leakage point of the to-be-detected pipeline is located between the two leather cup structures, the pressure between the two leather cups acts on the leakage point, the flow field of the leakage point area is changed, the detection assembly is affected to generate vibration displacement, and therefore the position of the leakage point is judged. The device realizes detection by depending on a flow field change signal accompanied by pipeline leakage, prevents software detection from depending on hardware and being easily influenced by sensor fault packet loss, and is simple in principle and stable in function.

The utility model discloses an explosion-proof type gas analyzer, which relates to the technical field of gas analyzers and comprises an analyzer explosion-proof shell and a fixing frame, one side of the analyzer explosion-proof shell is provided with an access hole, and the fixing frame is fixedly arranged on the outer side of the access hole. A cover plate is arranged on the side, away from the analyzer explosion-proof shell, of the fixing frame in an abutting mode, a plurality of through holes are formed in the surface of the cover plate in an annular array mode, threaded rods are movably inserted into the multiple through holes, one ends of the multiple threaded rods are fixedly connected with the side wall of the fixing frame, and the other ends of the multiple threaded rods are fixedly connected with the side wall of the analyzer explosion-proof shell. A sliding groove is formed in the side, away from the fixing frame, of the cover plate, a sliding block is arranged in the sliding groove in a sliding mode, an arc-shaped plate is fixedly arranged on the outer side wall of the sliding block, a thread is formed in the inner wall of the arc-shaped plate, and the thread on the inner wall of the arc-shaped plate is connected with the thread on the outer wall of the corresponding threaded rod in a clamped mode. According to the utility model, the explosion-proof housing can be opened in a time-saving and labor-saving manner, and internal elements of the explosion-proof housing can be conveniently maintained.

The invention discloses a welding device and method for vacuum pump impeller production, and relates to the technical field of impeller production and welding. The device comprises a base and a welding table, the welding table is arranged in the middle of the top end of the base, a welding mechanical arm and a clamping mechanical arm are arranged on the two sides of the top end of the base correspondingly, a positioning frame is arranged at the driving end of the clamping mechanical arm, a blade splicing assembly is arranged in the positioning frame, and the blade splicing assembly comprises a centripetal moving assembly and a synchronous clamping assembly. Six flexible clamping assemblies distributed in an annular array are arranged in the synchronous clamping assembly, and a positioning assembly is arranged in the middle of the bottom end of the positioning frame; by arranging the blade splicing assembly and the flexible clamping assembly, when the blade splicing assembly drives the flexible clamping assembly to move towards the blade and execute the clamping action, the flexible clamping assembly drives the clamping rod to be tightly attached to the outer wall of the blade all the time by means of an elastic adaptation structure of an inner barrel and a limiting rod; and a stable flexible clamping effect is formed on the surface of the blade.

The invention discloses a ship propeller energy-saving rectifying device with diversion wings, and particularly relates to the technical field of ships, the ship propeller energy-saving rectifying device comprises a ship body, a driving rod is arranged at the rear end of the ship body, a propeller is arranged at the rear end of the driving rod, and a plurality of diversion wings are fixedly installed on the outer wall of the driving rod in an annular array mode. An L-shaped fixing support is arranged above the driving rod, the L-shaped fixing support is installed on the rear side of the ship body, a rectifying mechanism is installed at the bottom end of the vertical position of the L-shaped fixing support, the rectifying mechanism comprises an annular flow guide cover, and the propeller is located on the inner side of the annular flow guide cover. According to the ship propeller energy-saving rectifying device with the flow guide wings, through the synergistic effect of the flow guide wings and the rectifying mechanism capable of being dynamically adjusted, the inflow condition of the disc face of the propeller is improved, pre-rotation and non-uniformity of water flow are effectively weakened, and therefore the propelling efficiency of the propeller is improved, and fuel consumption and operation cost are reduced.

The invention belongs to the technical field of underwater welding, and discloses an underwater double-path ultrasonic synergistic laser-electric arc hybrid welding repair device and method. The device comprises a two-way ultrasonic synergistic TIG welding gun and a laser head which are both fixed on an external drainage cover, and sealing penetration pieces are arranged on the external drainage cover for the two-way ultrasonic synergistic TIG welding gun and the laser head; the double-path ultrasonic synergistic TIG welding gun comprises a tungsten electrode sound path and an end part sound path; the tungsten electrode sound path transmits ultrasonic energy to a welding gun tungsten electrode through a tungsten electrode ultrasonic transducer, the electric field at the root of the welding gun tungsten electrode and the micro-motion behavior of the welding gun tungsten electrode are affected, and therefore the electric arc is compressed, and the position of the root of the electric arc is finely adjusted. The end sound path acts on the end of the welding gun through the end ultrasonic transducers in an annular array, directional sound radiation pressure is applied, an electric arc column and the surface of a molten pool are adjusted, heat input is promoted to be evenly distributed, and the symmetry of the molten pool is improved. The welding quality and the process stability are remarkably improved.