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99results about How to "Eliminate vibration" patented technology
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Double-layer coil pipe type multi-stage heat exchanger and heat exchange method thereof
ActiveCN119642611AEasy to disassembleeasy maintenanceStationary tubular conduit assembliesHeat exchanger casingsMechanical engineeringMechanics
The invention belongs to the technical field of heat exchange equipment, and particularly relates to a double-layer coil pipe type multi-stage heat exchanger and a heat exchange method thereof.The double-layer coil pipe type multi-stage heat exchanger comprises multiple heat exchanger bodies which are sequentially connected in series, each heat exchanger body comprises an outer cylinder, an inner cylinder, a first-layer coil pipe and a second-layer coil pipe, and each outer cylinder is arranged on the outer wall of the corresponding inner cylinder in a sleeving mode and provided with a fluid inlet and a fluid outlet; a fluid inlet and a fluid outlet which are communicated are formed in the inner cylinders, the fluid outlet of the upper-stage inner cylinder is communicated with the fluid inlet of the lower-stage inner cylinder, and the first-layer coil pipe and the second-layer coil pipe are both arranged in an annular cavity formed by the outer cylinder and the inner cylinders.
Owner:SHANDONG PULILONG PRESSURE VESSEL
Vehicle regenerative braking control method, device and system, vehicle and storage medium
The invention relates to a vehicle regenerative braking control method, device and system, a vehicle and a storage medium. The vehicle regenerative braking control method comprises the following steps that in response to starting of an anti-lock braking system, a wheel speed signal of the vehicle is obtained; judging whether the vehicle vibrates or not based on the obtained wheel speed signal; under the condition that the vehicle does not generate vibration, the braking of the vehicle is kept in a common ABS hydraulic braking mode; in a case where vibration is generated in a vehicle, it is determined whether to execute electric regenerative braking based on a maximum recoverable torque currently executable by a motor and a target electric braking torque, and in a case where the maximum recoverable torque is greater than a predetermined value and the target electric braking torque is less than or equal to the maximum recoverable torque, the maximum recoverable torque is greater than a predetermined value and the target electric braking torque is greater than or equal to a predetermined value. Gradually converting braking of the vehicle into an electric regenerative braking mode; otherwise, the braking of the vehicle is kept in a common ABS hydraulic braking mode. According to the invention, vibration generated during low-load braking of the vehicle can be reduced or completely eliminated.
Owner:ROBERT BOSCH GMBH
Node sampling-based one-dimensional synthetic aperture microwave radiometer near-shore brightness temperature increasing method
ActiveCN119313599Aeliminate vibrationpollution suppressionImage enhancementImage analysisBrightness temperatureMicrowave radiometer
The invention belongs to the technical field of one-dimensional synthetic aperture near-shore data processing, and relates to a one-dimensional synthetic aperture microwave radiometer near-shore brightness temperature increasing method based on node sampling, which comprises the following steps: initializing parameters, and carrying out oversampling processing on frequency domain signals containing Gibbs pollution; nodes in the oversampling brightness temperature image are searched through positive and negative values of a second derivative, and common nodes and abrupt change nodes are screened; performing iterative correction on the common nodes, including calculating a high-resolution Laplacian operator, updating brightness temperature values of the common nodes, and performing loop iteration; brightness temperature correction is performed on the abrupt change node, a trend factor is calculated according to the brightness temperature difference value of the nearest adjacent node, and the brightness temperature value of the abrupt change node is updated; and outputting the corrected near-shore data brightness temperature value. According to the method, Gibbs oscillation elimination and sea-land buffer area reduction are carried out by using a node sampling method, and on the basis that iteration of all common nodes is completed, mutation nodes are corrected by calculating trend factors, so that the purpose of reducing the sea-land buffer area is achieved.
Owner:OCEAN UNIV OF CHINA
Vibration isolation device of air suspension air pump
ActiveCN222502533URealize the shock absorption functioneliminate vibrationNon-rotating vibration suppressionVibration amplitudeEnergy absorption
The vibration isolation device of the air suspension air pump comprises a bottom plate, a limiting seat, an installation plate, a gasket, a cylindrical spring, a fixing rod and a vibration isolation auxiliary assembly, the limiting seat is fixedly arranged at one end of the bottom plate, the installation plate is movably arranged in the limiting seat in a clamped mode, the gasket is fixedly arranged at one end of the installation plate, and the cylindrical spring is arranged in the gasket. A cylindrical spring is fixedly arranged at one end of the gasket, and a fixing rod is arranged in the cylindrical spring in a sleeved mode. The limiting seat, the mounting plate, the gasket and the fixing rod assist the cylindrical spring to achieve the function of reducing the vibration amplitude when the air suspension air pump vibrates; the high-strength spring is matched with the damper sleeve and the damper telescopic cylinder to achieve the damping function of the air suspension air pump. The friction rubber, the friction protruding strips and the friction protruding particles play a role in friction energy absorption, and vibration of the air suspension air pump can be eliminated. The through holes, the positioning columns, the limiting wafers and the wafer through holes have the positioning function, and the air suspension air pump is prevented from deviating in the vibration process.
Owner:QINGDAO DINUO XINKE IND & TRADE CO LTD
Diaphragm movement device, scanning movement method thereof and exposure device
ActiveCN119575765Aeliminate vibrationreduce demandPhotomechanical exposure apparatusMicrolithography exposure apparatusControl engineeringElectrical connection
The invention provides a diaphragm movement device, a scanning movement method thereof and an exposure device, and relates to the technical field of semiconductor equipment, the device comprises a movement assembly and a mass balance assembly which are connected, the movement assembly comprises a first guide rail, a first sliding block, a second sliding block, a first driving piece and a second driving piece, the mass balance assembly comprises a first guide rail, a third sliding block, a fourth sliding block, a first driving piece and a second driving piece, the first driving piece and the third driving piece are electrically connected into the first control circuit, and the second driving piece and the fourth driving piece are electrically connected into the second control circuit. The device is simple in structure, the third sliding block and the fourth sliding block can synchronously and reversely move without delay along with the movement of the first sliding block and the second sliding block, compared with the prior art, the design of the device reduces the requirement for a complex control algorithm, the response speed is higher, and counter-force balance can be achieved more timely.
Owner:HARBIN INST OF TECH +1
Centrifugal casting pipe die for double-flange straight pipe
The utility model discloses a double-flange straight pipe centrifugal casting pipe die which is characterized in that an upper half die and a lower half die are buckled in a stepped inclined plane mode, and a rolling belt ring inclined plane is sleeved on a half convex ring of the upper half die and a half convex ring of the lower half die in a matched mode and is matched with a retaining ring on a centrifugal riding wheel. And balance blocks capable of being circumferentially adjusted are mounted on the outer surfaces of the upper half die and the lower half die. Inner and outer sand cores are installed on spigot sections at the two ends of the pipe die, the back faces of the inner sand cores are matched with inner spigots to form receding spaces, and shrinkage of the cast pipe is prevented from being blocked. The balance blocks are fastened on the semi-rings on the outer walls of the upper half die and the lower half die or fastened between the semi-baffle rings and the semi-convex rings and in gaps between the semi-convex rings and the rolling belt rings, and dynamic balance of the pipe die is achieved through circumferential adjustment. The pipe die is simplified in structure, waste products cannot be generated due to casting shrinkage, the pipe die can adjust dynamic balance, and the equipment failure rate is reduced.
Owner:山东伯益管道设备有限公司
Anti-shake device of camera
ActiveCN222366320Ueliminate vibrationresolve swingNon-rotating vibration suppressionTransducer casings/cabinets/supportsMechanical engineeringPhysics
The utility model relates to an anti-shake device of a camera, which comprises a top shock absorption device, a bottom shock absorption device and an independent sound box, the independent sound box is arranged between the top shock absorption device and the bottom shock absorption device, the top shock absorption device comprises a shock absorption upper shell, a plurality of first soft rubber pads and a plurality of springs, the first soft rubber pads are connected to the upper damping shell, the springs correspond to the first soft rubber pads in a one-to-one mode, each spring is connected into the corresponding first soft rubber pad, the upper damping shell is provided with a plurality of combination portions, the combination portions are arranged on the periphery of the upper damping shell, and the first soft rubber pads and the second soft rubber pads are in one-to-one correspondence. Each combination part is provided with a fixing hole, the top damping device further comprises shockproof cotton, and the shockproof cotton is attached to the top of the damping upper shell.
Owner:SHENZHEN ANYWII ELECTRONICS TECH CO LTD
A force-position hybrid control method for robotic friction stir welding
The application discloses a kind of robot friction stir welding force-position hybrid control method, it is related to robot welding control technical field, comprising the following steps: step S10 establishes the hybrid strategy model based on constant displacement control and constant pressure control, the trajectory deviation caused by flexible deformation is compensated by robot dynamic offset function;The constant displacement control monitors welding depth in real time by laser sensor, the laser sensor is installed in 45° oblique direction to the outer wall of motorized spindle, and the collection point is located in the front side of the welding advancing direction, to avoid the interference of flash;The constant pressure control is collected axial upset force by six-dimensional force sensor, and force feedback type impedance control strategy is adopted.The robot friction stir welding force-position hybrid control method compensates the flexible deformation of robot by dynamic offset function, combined with the hybrid strategy of constant displacement and constant pressure control, solves the problem of uneven weld forming under single control mode.
Owner:BEIJING UNIV OF TECH
Direct-drive electro-magnetic annular synchronous motor
ActiveCN224191702USolve transportation and installation problemsRealize split manufacturingMagnetic circuit rotating partsMagnetic circuit stationary partsSynchronous motorGear drive
The utility model discloses a direct-drive electro-magnetic annular synchronous motor, and belongs to the technical field of large-scale synchronous motors. The motor comprises a split stator which is formed by splicing and fixing a plurality of stator petals along the circumferential direction; the block magnetic poles form a motor rotor, a plurality of independently-formed magnetic pole units are arranged at intervals in the circumferential direction, and each magnetic pole unit is directly and fixedly installed on the outer wall of the load rotating cylinder; the supporting and sealing structure is arranged at the axial end part between the split stator and the block magnetic pole and is used for sealing a gap between the split stator and the block magnetic pole; and the collector ring and brush carrier system is arranged at one axial end of the motor, and the output end of the collector ring and brush carrier system is electrically connected with the excitation windings of the block magnetic poles. According to the utility model, the split stator and the block magnetic pole structure are adopted, so that the transportation and field installation of the ultra-large motor are facilitated; the rotor is directly mounted on the outer wall of the milling cylinder to realize direct drive, a gear transmission link is omitted, the transmission efficiency is high, and operation is stable; a multi-layer sealing structure adapts to a high-dust environment, and the reliability is high; the speed regulation performance is good and the maintenance is convenient.
Owner:XIANGTAN ELECTRIC MFG CORP LTD
A vibrating screen fixing device
The utility model belongs to the technical field of vibrating screen, concretely is a kind of vibrating screen fixing device, including bottom plate, the bottom plate top is fixedly connected with multiple slide bars;The end portion of slide bar is slidably connected with support plate;The support plate bottom is fixedly connected with multiple compression springs;Compression spring is sleeved on the surface of slide bar, and the bottom of slide bar is provided with adjusting assembly;Adjusting assembly and compression spring are contact setting;One pair of air springs is fixedly connected between the support plate and bottom plate;Air pump is arranged in the side wall of bottom plate;Air pump and air spring are connected by air pipe;The range when vibrating screen body shakes can be limited by increasing first clamping block and second clamping block, then the transmitted vibration is absorbed by air spring and compression spring, so that it is quickly eliminated by the absorption diffusion of air spring and compression spring when vibrating, so as to reduce the shaking caused by vibration, make it more stable after placing and reduce position deviation.
Owner:GUANGZHOU LONGYUE ENVIRONMENTAL PROTECTION MASCH EQUIP CO LTD +1
Vibration massage device
This utility model discloses a vibration massage device, relating to the field of massage equipment technology. The vibration massage device includes a housing, a hollow support, a vibration component, and a buffer structure. The housing has two sides oppositely arranged in a first direction, and a gripping sidewall encircling the two sides. At least one of the two sides is a vibration massage surface. The hollow support abuts against the gripping sidewall and encloses an installation space extending in the first direction. The vibration component includes a vibration support and a vibrating element mounted on the vibration support. The vibration support is located in the middle of the installation space and extends along the first direction, having a top side and a bottom side, which abut against the two sides of the housing in the first direction, respectively. The buffer structure is located in the installation space and abuts against the vibration component and the hollow support. The technical solution provided by this utility model can achieve a good vibration massage effect while reducing the vibration sensation in the gripping part of the vibration massage device.
Owner:TOUCHBEAUTY WORLDWIDE LTD
A multi-axis synchronized tapping device for clutch stampings
This invention relates to the field of tapping equipment technology, specifically a multi-axis synchronous tapping device for clutch stamping parts. It includes a tooling base on which an assembly is mounted. By installing a distance adjustment component on the upper mounting base and slidably connecting a third tapping gear to this component, the radial position of the third tapping gear and the tap can be flexibly adjusted, thereby changing the tapping distribution circle diameter. This allows the device to quickly adapt to clutch stamping parts with different hole specifications, significantly reducing changeover costs. Simultaneously, it employs a full gear transmission layout where one first tapping gear simultaneously meshes with multiple second tapping gears, and each second tapping gear then meshes with a third tapping gear. The transmission chain is short and all parts are rigidly synchronized, completely eliminating vibration problems caused by unequal speeds and expansion / contraction clearances in universal joint transmissions, effectively ensuring the machining accuracy of the threads.
Owner:SUZHOU FINE BLANKING & TOOL CO LTD
10kV vacuum circuit breaker
ActiveCN222365494Uprevent springbackprevent reboundContact vibration/shock dampingHigh-tension/heavy-dress switchesClassical mechanicsArc extinction
The utility model discloses a 10kV vacuum circuit breaker, which comprises an operating mechanism, a main shaft, a pull plate, an insulating pull rod, an arc extinguish chamber and a buffer mechanism, a moving contact and a static contact are arranged in the arc extinguish chamber; one end of the insulating pull rod is connected with the moving contact, and the other end is connected with the main shaft through a pull plate; the operating mechanism is connected with the main shaft and provides driving force for the main shaft. And a buffer mechanism is arranged at one end of the main shaft. The buffer mechanism is arranged to absorb kinetic energy during opening and closing, and the contact is prevented from swinging back and forth.
Owner:JIANGSU DANTONG ELECTRIC
A global campus data quality management and control sharing system and method
This invention relates to the field of campus resource allocation and monitoring data processing technology, and discloses a campus-wide data quality control and sharing system and method, including: acquiring personnel location trajectory data and building energy consumption time series data; when the timestamp deviation value exceeds a threshold, running a differential compensation function and index correction coefficient for numerical hedging; outputting aligned and reconstructed feature parameters to calculate the resource utilization deviation matrix; performing smooth regression prediction when sampling frames are lost; using data processing tokens to resolve bus read / write conflicts under high concurrency load; and converting the shared data access control boundary into a dynamic routing table control strategy and outputting resource allocation data instructions when the matrix exceeds a safety threshold. This invention resolves the time series feature differences caused by multi-rate asynchronous sampling, suppresses control signal overshoot and decision loop oscillation, improves the convergence speed of control deviation, and ensures system processing efficiency.
Owner:MEIZHOU BAY VOCATIONAL & TECH COLLEGE
A bearing with floating block
ActiveCN116181794Beliminate vibrationRolling contact bearingsClassical mechanicsStructural engineering
Owner:ZHEJIANG YAWEI PRECISION MASCH TOOL CO LTD
A high speed pusher case packing system
This invention discloses a high-speed side-push type carton packing system in the field of packaging equipment technology, including: a frame and a feeding and conveying mechanism, a stacking mechanism, a storage mechanism, an opening mechanism, a packing mechanism, and a sealing mechanism mounted on the frame. The opening mechanism is used to pick up the packaging cartons stacked on the storage mechanism and unfold them so that the opening of the packaging carton faces horizontally. The packing mechanism includes a support and a push plate, a limiting baffle, and a first driving component mounted on the support. This invention abandons the traditional vertical gravity unloading method and instead adopts a side-push horizontal packing method. The first driving component precisely controls the push plate's movement, smoothly pushing the vertically stacked items from the side into the unfolded packaging carton, eliminating the impact and vibration generated during the free fall of materials, avoiding the risk of breakage of fragile items during packing, and ensuring the consistency and integrity of the product's posture before and after entering the carton.
Owner:HEFEI LONGYAN SMART TECHNOLOGY CO LTD
Double-coil brushless motor controller
PendingCN121813943AAvoid voltage mismatch issuesGuaranteed uptimeElectronic commutation motor controlAC motor controlBrushless motorsDual coil
The invention discloses a double-coil brushless motor controller, and relates to the technical field of brushless motor control. The controller comprises a Hall sensor, a control module, a relay module, a three-phase inverter bridge module and a power supply module, the Hall sensor collects motor signals, the control module calculates the angle and the rotating speed of the motor, the relay module is controlled through specific logic to switch connection of the high-speed coil and the low-speed coil, and meanwhile adaptive driving voltage is calculated according to a formula and output to the motor through the three-phase inverter bridge module. The problem of vibration caused by mismatching of back electromotive force during switching of an existing double-coil motor is solved, smooth switching of the coils is achieved, high and low rotating speeds and large torsion performance are considered, and the double-coil motor is suitable for the requirements of multiple scenes such as kitchen appliances and has the advantages of being high in stability and high in adaptability.
Owner:DONGGUAN LIHUI MOTOR CO LTD
Anti-loosening rotor core fixing assembly on motor
ActiveCN224110964UImprove stabilityreduce vibrational energyMagnetic circuit rotating partsSupports/enclosures/casingsInterference fitLaser processing
The utility model relates to the technical field of servo motor manufacturing, and discloses an anti-loosening rotor core assembly on a motor, which comprises an iron body, the inner wall of the iron body is fixedly connected with a rotating shaft, the inner wall of the iron body is connected with a reinforcing rib, the left end and the right end of the reinforcing rib are fixedly connected with a shaft disc, the inner wall of the shaft disc is connected with a fixed shaft, and the fixed shaft is fixedly connected with the rotating shaft. The outer wall of the fixing shaft is in threaded connection with a nut, the left side and the right side of the iron body are both connected with embedded pipes, the outer walls of the embedded pipes are provided with embedded grooves, and the outer walls of the embedded grooves are connected with expansion rings. According to the motor rotor structure, the grid-shaped reinforcing ribs are integrated in the middle of the iron core to achieve mechanical strengthening, the end portion of the iron core is in rigid connection with the shaft disc through the interference fit technology, the groove channels are formed in the surface of the embedded column on the iron core through laser machining, and the shape memory alloy expansion rings are assembled in the grooves. When the temperature reaches a preset threshold value, the expansion ring generates directional deformation, so that the overall stability of the fixing assembly is improved.
Owner:JIANGYIN HENGGU MOTOR CO LTD
Rotation-preventing limited-position cement mixing pile machine and rotation-preventing method
The present invention relates to the technical field of cement mixing pile machines, and specifically to a limited-position cement mixing pile machine for preventing rotation and deflection and a method for preventing rotation and deflection, comprising: a driving member, which is arranged on the lifting platform, and the driving member is provided with a positioning ring capable of inserting the end of a drill rod; a clamping assembly, which connects the lifting platform and the driving member, and the clamping assembly comprises a driving structure and a retracting structure, and the retracting structure is provided with a plurality of groups of arc-shaped members equidistantly arranged on the circumference, and the driving structure cooperates with the retracting structure to drive the plurality of groups of arc-shaped members to move toward the drill rod; a sleeve structure, which is connected to one end of the drill rod away from the arc-shaped member, and the sleeve structure can suppress the vibration generated by the end of the drill rod away from the arc-shaped member, prevent the screw thread of the threaded connection from being damaged, and improve the portability of the installation and disassembly of the drill rod.
Owner:GUANGZHOU CIVIL AVIATION AIRPORT ENG CONSULTING SUPERVISION CO LTD
Damping device for shield tunneling machine for soft soil stratum
ActiveCN222436920Ueliminate vibrationImprove stabilityNon-rotating vibration suppressionStands/trestlesMachineDamper
The utility model discloses a damping device for a shield tunneling machine for a soft soil stratum, which belongs to the technical field of shield tunneling machine damping and comprises a base, a hydraulic rod arranged in an inner cavity of the base, a mounting plate arranged at the telescopic end of the hydraulic rod, moving wheels connected to four corners of the lower surface of the mounting plate, a fixing seat arranged at the top of the base, and a damping mechanism arranged in an inner cavity of the fixing seat. The damping mechanism comprises a bearing plate, sliding grooves are formed in the inner walls of the two sides of the fixed seat, a moving seat is slidably connected into each sliding groove, a first damper is connected between the outer side face of each moving seat and the outer side wall of the bearing plate, a supporting seat is installed at the top of the bearing plate, and multiple sets of arc-shaped blocks are arranged on the inner wall of the supporting seat. A buffering effect is provided for the shield tunneling machine from multiple directions, vibration of the shield tunneling machine during working is eliminated, and the situation that the using effect of the shield tunneling machine is affected due to vibration when the shield tunneling machine on a soft soil stratum is used is avoided; and the contact area between the damping device and the soft soil stratum is large, so that the stability of the whole damping device during use is improved.
Owner:NINGBO COMM ENG CONSTR GRP
Improved universal mechanical arm
The utility model relates to the technical field of mechanical arms, and discloses an improved universal mechanical arm which comprises an arm body and mounting heads arranged at the two ends of the arm body, the middle of the arm body is hollow to form a wire passing channel, and each mounting head comprises an assembling part, a connecting part and an assembling ring located between the assembling part and the connecting part. The outer diameter of the assembling ring is larger than that of the assembling part and that of the connecting part. The end part of the arm body is inserted and fixed with the connecting part; one end, close to the connecting part, of the assembling ring is used for stopping and abutting against the arm body; the assembling part is used for being in inserting fit with an external power unit. The end, close to the assembling part, of the assembling ring is used for stopping and abutting against the power unit. According to the mechanical arm, the assembly ring abuts against the arm body and the power units in a stopping mode, so that vibration generated when the power units work is buffered and eliminated, excessive vibration frequency is prevented from being transmitted through the arm body, the vibration elimination effect is achieved, the influence of vibration on the power units is effectively avoided, and then the service life of the mechanical arm is prolonged.
Owner:SHENZHEN WARSONCO TECH CO LTD
Supporting structure of single-side polishing machine
PendingCN119635506AImprove verticalityeliminate vibrationGrinding carriagesPolishing machinesPolishingDISC assembly
The supporting structure of the single-face polishing machine comprises a box body, the box body comprises a lower box body and an upper box body arranged on the lower box body, a supporting column is connected between the lower box body and the upper box body to form an up-down split type supporting structure, a lower polishing disc assembly is arranged in the middle of the lower box body, and a lower polishing disc assembly is arranged in the middle of the lower box body. An upper polishing head assembly is arranged above the lower polishing disc assembly, and the upper polishing head assembly is arranged on the upper box body and used for pressurizing and polishing a workpiece on the lower polishing disc assembly. The supporting structure of the single-face polishing machine adopts upper and lower split type supporting, can avoid an upper polishing head shaft system resonance point, eliminates equipment vibration, improves the perpendicularity of an upper polishing head system and a lower polishing disc, guarantees the machining precision, and meanwhile increases the equipment machining space.
Owner:SUZHOU HRT ELECTRONICS EQUIP TECH
A honeycomb sheet stacking positioning mechanism for a wind tunnel honeycomb module welding device
ActiveCN224737594UEliminate tiny displacementseliminate relative rotation
This utility model discloses a honeycomb cell stacking positioning mechanism for a wind tunnel honeycomb module welding device in the field of honeycomb cell stacking welding technology. It includes an upper positioning component mounted on a limiting mechanism of a welding platform. The upper positioning component has a spliced structure and includes a first positioning component and a second positioning component. A positioning element is provided between the first and second positioning components. The positioning element corresponds to the diameter of the honeycomb tube in the honeycomb module and penetrates through the honeycomb tube. This utility model constructs a rigid frame by having the working section of the positioning element penetrate the honeycomb tube and tightly connect it to the upper positioning component using a connecting section. This ensures that each honeycomb cell receives bottom support and top clamping, locking it in a predetermined position. This eliminates the slight displacement and rotation caused by uncertainties such as uneven clamping force, visual deviation, and operational vibration in traditional stacking processes.
Owner:LOW SPEED AERODYNAMIC INST OF CHINESE AERODYNAMIC RES & DEV CENT +1
A method and system for reactive power coordination control and circulation suppression in a wind-solar-storage storage station cluster
PendingCN122092403ARealize unified quantitative evaluationImprove operational efficiencySingle network parallel feeding arrangementsAc network voltage adjustmentElectric power systemControl engineering
This invention provides a method and system for reactive power coordination control and circulating current suppression in a wind, solar, and energy storage power plant cluster, belonging to the field of power system operation control technology. The method includes: collecting operating data from each substation and calculating a normalized circulating current index; activating a circulating current suppression mode when the index exceeds limits, obtaining the total reactive power target command for the power plant cluster, and identifying the target reactive power direction based on a dead zone threshold; dynamically clamping the upper or lower limits of reactive power output of each substation according to the target direction, generating a unidirectional blocking command to cut off the circulating current loop; and performing margin balancing control in non-suppression mode. This invention eliminates the influence of power plant capacity differences on the criteria through a normalized index, effectively solves the reactive power circulating current and control deadlock problems caused by opposite output by utilizing dynamic clamping logic based on target commands, and integrates voltage safety verification to achieve coordinated optimization of reactive power resources across multiple power plants and stable control of grid voltage.
Owner:THREE GORGES NEW ENERGY SIZIWANG BANNER CO LTD +2
Oil seal air tightness detection equipment of electric vehicle driving motor
PendingCN121855792AHigh precisionImprove stabilityMeasurement of fluid loss/gain rateElectric machinesElectric machineryElectric vehicle
The invention discloses oil seal air tightness detection equipment for an electric vehicle driving motor. The oil seal air tightness detection equipment comprises a rack, a conveying module and an air tightness detection module. The conveying module is matched with a jacking limiting assembly through a roller conveying line, and automatic feeding, accurate positioning and rigid locking of the motor are achieved. The air tightness detection module comprises an air tightness instrument, an air tightness pressing module and an automatic point inspection module. A pressing air cylinder drives an air tightness pressing head to conduct sealing detection on the motor oil seal. The equipment innovatively adopts a jacking-support changing structure, stable stress is provided by a supporting plate, and detection micro-motion is eliminated; an automatic point inspection function is integrated, a zero leakage comparison tool can be periodically called to carry out on-line self-calibration on the system, and precision drift is effectively early warned. The motor oil seal airtightness detection device realizes full automation of the detection process, has the characteristics of high precision, high stability and intelligent self-maintenance, and ensures the consistency and long-term reliability of motor oil seal airtightness detection.
Owner:SUZHOU RUISIFU INTELLIGENT EQUIP CO LTD
A load distribution method for a steam turbine generator
ActiveCN117189276Beliminate vibrationMachines/enginesSafety/regulatory devicesControl theoryLoad following power plant
The application provides a load distribution method for a steam turbine generator, which comprises the following steps: setting a load measuring point and a displacement measuring point respectively; repeatedly testing the load and initially adjusting the thickness of the foot pad corresponding to the stable measuring point; adjusting the jack at the stable measuring point according to the load table of the steam turbine generator; testing the load of each jack at the adjustment measuring point while maintaining the jack at the stable measuring point; and adjusting the thickness of the foot pad corresponding to the adjustment measuring point again according to the test result. The load measuring point and the displacement measuring point corresponding to the foot pad are set, the load of the steam turbine generator stator part is adjusted at each load measuring point and displacement point, the thickness of the corresponding foot pad is adjusted, and the thickness of the foot pad of the steam turbine generator end cover part is adjusted, so that the load of the generator after the steam turbine unit maintenance is quickly leveled, and the vibration of the generator is eliminated.
Owner:TECH INFORMATION CENT SPIC HENAN ELECTRIC POWER CO LTD
Anti-seismic device for steel structure building
ActiveCN115853149Beliminate vibrationEasy to switchProtective buildings/sheltersAlarmsClassical mechanicsMechanical engineering
Owner:JIANGSU SHISHENG CONSTR ENG CO LTD
Blade structure with aerodynamic damping function in a turbomachine
ActiveCN224396544Ureduce vibrationeliminate vibrationBlade accessoriesMachines/enginesImpellerDamping function
This utility model discloses a blade structure with aerodynamic damping function in turbomachinery, belonging to the technical field of blade structure technology. It includes a blade, a swing groove, a damping block, a connecting hole, and damping air holes. The swing groove is located at the root of the blade, and the blade has a matching connector for the turbomachinery. The connecting hole is located within the connector. The damping block includes a connecting part, a swing part, and a damping part, all made of elastic material. The connecting part is inserted into the connecting hole, and the damping part is located within the swing groove. The connecting part and the damping part are connected by the swinging part, and the top of the damping part is fixed to the top of the swing groove. Multiple damping air holes are provided through the blade at positions corresponding to the swing groove. This utility model dissipates energy through the elastic swing of the damping block and the damping air holes, without affecting the structural integrity of the overall impeller in the turbomachinery, and suppresses high-order modal vibrations.
Owner:国家能源集团泰州发电有限公司
Noise reduction structure of water suction motor of automatic scrubber
ActiveCN224191755Uachieve installationachieve noise reductionMachine detailsCooling/ventillation arrangementControl engineeringStructural engineering
The utility model discloses a noise reduction structure of a water absorption motor of an automatic scrubber, which comprises a support and a motor, the support is provided with a hollow inner cavity, the inner cavity is provided with a fluid channel, two ends of the fluid channel are provided with a fluid inlet and a fluid outlet, and the fluid inlet and the fluid outlet are arranged on the wall surface of the support; the support is provided with a through positioning channel, the motor is provided with an extraction opening and a drainage opening, the motor is arranged on the support and inserted into the positioning channel, the extraction opening and the positioning channel are oppositely arranged, and the drainage opening is connected with the fluid inlet through the pipe body. The noise reduction structure is arranged to be the support, installation of the motor is facilitated, the structure is more compact, noise reduction of fluid is achieved, the fluid channel is arranged in the support, flow guiding and noise reduction of the fluid at the drainage port of the motor are achieved, the support is a hollow inner cavity, vibration of the motor can be eliminated, and noise reduction of the motor is achieved. And therefore, the dual noise reduction effect is realized.
Owner:GUANGDONG ICE CO LTD
Electron beam continuous stepless adjustment device based on convergence point axial position control, its adjustment method and application
PendingCN122091456Aeliminate vibrationeliminate wear and tearElectric discharge tubesOptical axisOptic system
This invention provides a continuous stepless adjustment device, method, and application for electron beam based on the axial position control of the convergence point, belonging to the field of electron optics adjustment technology. The invention includes an anode body, an anode aperture, an electromagnetic focusing unit, and a fixed single-aperture main aperture, coaxially arranged along the electron beam propagation direction within the lens barrel of an electron optics system. This invention uses the axial position of the electron beam's convergence point relative to the fixed single-aperture main aperture as the control degree of freedom. The electromagnetic focusing unit continuously adjusts the displacement of the convergence point along the optical axis, achieving continuous stepless adjustment of the electron beam. By completely eliminating the mechanical moving parts of the aperture, this invention not only achieves continuous and smooth adjustment of the electron beam but also fundamentally avoids the vibration, contamination, and failure risks caused by mechanical movement. This significantly improves the reliability, repeatability, and long-term stability of the electron optics system, while simplifying the system structure and reducing manufacturing and maintenance costs.
Owner:NCS-MICRO BEAMS (BEIJING) CO LTD