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57results about How to "Avoid mechanical loss" patented technology
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Stable electromagnetic braking method and apparatus applicable to brushless direct current motor
ActiveCN106130418AReduce volumeAvoid mechanical lossTorque ripple controlStopping arrangementsBrake torqueElectromagnetic torque
The invention belongs to the control technical field of a brushless direct current motor, and provides a braking method for maintaining non-fluctuation of electromagnetic torque communication and controllable magnitude of braking torque; the torque control performance of the motor under a braking state can be improved; and in the process, fluctuation of communication torque does not exist, and the control performance is not affected by the rotary speed of the motor. According to the technical scheme provided by the invention, the stable electromagnetic braking method applicable to the brushless direct current motor comprises two steps of modulation strategy switching and commutation current control, wherein the step of modulation strategy switching is carried out by performing reasonable partitioning on the rotary speed of the motor according to specific motor parameters and requirements of a designer; the rotary speed of the motor is partitioned into a high-speed region and a low-speed region; feedback braking which refers to a modulation strategy 1 is adopted in the high-speed region while plug braking which refers to a modulation strategy 2 is adopted in the low-speed region; the step of commutation current control is carried out by designing a commutation duty ratio compensation controller; the commutation duty ratio compensation controller is matched with a main controller to form a current controller; and finally, a proper commutation duty ratio is calculated. The stable electromagnetic braking method and apparatus are mainly applied to the design and manufacturing occasions of the brushless direct current motor.
Owner:TIANJIN UNIV
Two-stage screw compressor and compression method
ActiveCN108150418AReduce risk of leakageEasy to assemble and disassembleRotary/oscillating piston combinations for elastic fluidsRotary piston pumpsEngineeringHigh pressure
The invention relates to a two-stage screw compressor and a compression method. Most of screw compressors use traditional horizontal swinging, gear transmission and other structures, and are poor in performance. The two-stage screw compressor comprises a main machine and is characterized by further comprising a low-pressure-stage driver and a high-pressure-stage driver; the main machine comprisesa low-pressure-stage shell, a high-pressure-stage shell, a low-pressure-stage screw, an inter-stage channel and a high-pressure-stage screw; the low-pressure-stage shell is provided with an air inletcavity and a low-pressure-stage air outlet, the low-pressure-stage screw is installed in the low-pressure-stage shell, and the low-pressure-stage driver is directly connected with the low-pressure-stage screw; the high-pressure-stage shell is provided with a high-pressure-stage air inlet and a high-pressure-stage air outlet, the high-pressure-stage screw is installed in the high-pressure-stage shell, and the high-pressure-stage driver is directly connected with the high-pressure-stage screw; the two ends of the inter-stage channel are fixed to the low-pressure-stage shell and the high-pressure-stage shell respectively, the two ends of the inter-stage channel are communicated with the low-pressure-stage air outlet and the high-pressure-pressure air inlet respectively, and an injection holeis formed in the inter-stage channel. The compressor is reasonable in structural design, scientific in layout and convenient to use.
Owner:HANGZHOU JIUYI MACHINERY
Novel liquid metal transfer pump
ActiveCN101451532AExtended service lifeMake sure it's intactSpecific fluid pumpsPump componentsImpellerEngineering
The present invention related to a fluent metal delivery pump which includes a pump case, a drive capstan and blade, characterized in that the pump case is a upright cylinder; the drive capstan is a screw axis mounted inside the cylinder; and the blade is helical blade surrounding the screw axis; the screw axis is supported by a gear bearing that fixed above the cylinder; and a drive capstan is supported by the gear bearing seat that coaxially connected with the cylinder. sealing blade wheel is provided in the invention which can rotate when driven by the drive capstan and generate centrifugal pull to form some certain negative-pressure inside the pump case, realize dynamic sealing of the pump, prevent cadmium liquor from overbrimming from the gear bearing seat. A structure that utilizing part above the liquid level of the cylinder clad the insulating course is adopted in the invention, so that cadmium liquor remained inside the pump will not cooled quickly after pump stopped which can prevent the remained cadmium liquor from quick crystallization and make mechanical damage to each components, and can prolong service life of the pump.
Owner:ZHUZHOU SMELTER GRP
A Constant Conduction Rotating Magnetic Field Electric Magnetic Levitation System
InactiveCN102291060ALarge suspension forceAvoid mechanical lossMagnetic holding devicesCopper conductorEngineering
The invention provides a constant conduction rotating magnetic field electric magnetic levitation system, the system is mainly composed of two parts: a primary formed by a radially slotted annular iron core and a copper coil winding placed in the slot; a smooth flat aluminum or copper conductor plate secondary. Place the copper coil winding symmetrically along the circumferential direction of the iron core. The winding form can be the winding form of an ordinary asynchronous motor. An alternating current of a certain frequency is passed into the coil winding to generate a rotating magnetic field in the air gap, and the rotating magnetic field is in the secondary conductor. The induction generates eddy currents, and the polarity of this eddy current magnetic field is opposite to the rotating magnetic field generated by the primary current, and the two interact to generate levitation force. The system has a stable structure, simple control, no mechanical rotating mechanism, no mechanical vibration, noise and gyroscope effect, suitable for large air gap levitation occasions, and can realize inherently stable static and stable magnetic levitation.
Owner:BEIJING JIAOTONG UNIV
Multistage Stirling engine and steady-state operation parameter regulating and controlling method thereof
ActiveCN111779590AGuaranteed uptimeEasy to operate and controlStirling type enginesClosed-cycle gas positive displacement engine plantProcess engineeringRenewable power generation
The invention relates to a multistage Stirling engine and a steady-state operation parameter regulating and controlling method thereof. According to the multistage Stirling engine, multiple Stirling work units are formed by mechanical energy input pistons, mechanical energy transferring double-acting free pistons and mechanical energy output pistons. The mechanical energy input pistons are connected with mechanical energy input devices, and the mechanical energy output pistons are connected with mechanical energy output devices. When the Stirling engine serves as an engine, small mechanical energy is input into the mechanical energy input pistons in one group of pistons, and after the mechanical energy is amplified by the multi-stage Stirling units, large mechanical energy is output by themechanical energy output pistons. According to the multistage Stirling engine and the steady-state operation parameter regulating and controlling method thereof, a needed piston motion manner is achieved through parameter calculation, selection and designing, and therefore the multistage Stirling engine can adapt to the change of the input conditions and regulate the output power according to needs. The multistage Stirling engine is simple in structure, good in regulation performance, small in mechanical loss, small in noneffective volume and suitable for adopting large-diameter pistons, andcan be widely used for waste heat power generation and distributed energy and renewable energy power generation.
Owner:王利
Auto-induction conveying device
InactiveCN106743336ASolve the problem that the weight is too small to transfer heavy itemsAvoid less effective situationsControl devices for conveyorsDrive shaftTransmission belt
The invention discloses an auto-induction conveying device. The auto-induction conveying device comprises a transmission belt, supporting plates, rotating shafts, sliding wheel disks, a device body, a driving device, a starting button, a circuit box, a gravity sensor, a center processing box, a signal transmission box, an adjusting controller, a driving shaft, a driving rotation wheel, a driving motor and a fixed base. The transmission belt is connected with the supporting plates. The driving device is installed below the supporting plates. The starting button is fixed to the left side position of the driving device. The signal transmission box is located below the gravity sensor. The driving rotation wheel is located at the left side position of the driving motor. The fixed base is connected with the device body. According to the auto-induction conveying device, an alloy material is used and matched with a supporting plate device and roller equipment, working efficiency is greatly improved, the efficiency is improved obviously, and the speed is increased; and the gravity sensor and signal transmission equipment are arranged, the auto-induction speed is high, electric energy losses are reduced, and time is shortened.
Owner:湖南固诚电气技术有限公司
A physical isolation data transmission device and method
ActiveCN107657969AImprove securitySimple actionRecord information storageRecording signal processingData transmissionManipulator
The invention discloses a physical isolation data transmission device comprising a data loading module, a data reading module, a data recording medium and a ferrying mechanism; the data loading moduleis used for loading data into the data recording medium; the data reading module is used for reading data in the data recording medium; the data loading module and the data reading module are spacedfor a certain distance in space; the ferrying mechanism is used for carrying the data recording medium and driving the data recording medium to move between the data loading module and the data reading module. The data loading module and a data transmission module form no connection and data communication and strict physical isolation is achieved; the ferrying mechanism only needs to carry the data recording medium such as a CD to move, so that the operation that a manipulator grabs and places CDs is avoided, the difficulty and the complexity of mechanical control are effectively reduced and the data transmission speed is greatly increased.
Owner:SUZHOU NETZON INFORMATION STORAGE TECH
Displayer control device and method thereof
InactiveCN101727870AAvoid mechanical lossInput/output for user-computer interactionCathode-ray tube indicatorsControl signalDisplay device
The invention discloses a displayer control device used for controlling a plurality of display settings of a displayer so as to regulate the display state of the displayers. The displayer control device comprises a sensor, a judgment module and a controller, wherein the sensor is used for detecting a hand position of a user in different time to generate a plurality of images; the judgment module is used for analyzing the images to generate at least one hand signal corresponding to the hand position of the user; and the controller generates a control signal to display a menu on the displayer when the displayer control device is started up, and performs a selection operation on one of options of the menu according to the hand signal so as to control a display setting corresponding to the option and regulate the display state of the displayer.
Owner:HIMAX MEDIA SOLUTIONS
Mechanically coupled flywheel assisted composite energy storage system and control method thereof
ActiveCN109687487AQuick responseFast response of energy storageMachines/enginesAc network load balancingFlywheel energy storageThermal energy storage
The invention discloses a mechanically coupled flywheel assisted composite energy storage system and a control method thereof. The system comprises a flywheel module and a compressed air energy storage module. The flywheel module is connected to a rotating disc through a continuously variable transmission when a clutch is closed, and the rotating disc achieves pre-synchronization with the flywheelspeed by motor acceleration. The rotating disc is connected to a reciprocating compressor, the reciprocating compressor is connected to the compressed air energy storage module, and the compressed air energy storage module compensates an intermittent power supply by connecting a generator. The flywheel energy storage and the compressed air energy storage adopt a mechanically coupled parallel structure. By collecting the flywheel speed, the clutch switch and the compressed air energy storage working state are determined, and the control strategy is simple and easy to operate and achieve.
Owner:SHANDONG UNIV
High-temperature superconductive rotating magnetic filed electric maglev system
InactiveCN102522925AAvoid mechanical lossAvoid mechanical propertiesMagnetic holding devicesGyroscopeEngineering
The invention discloses a high-temperature superconductive rotating magnetic filed electric maglev system in the field of electromagnetic techniques. The system comprises a primary iron core, a primary winding, a Dewar flask and a secondary aluminum conductor plate, wherein the primary winding is installed in the groove of the primary iron core; the primary iron core is arranged at the bottom of the Dewar flask; the secondary aluminum conductor plate is arranged below the Dewar flask and the area of the secondary aluminum conductor plate is larger than the area of the primary iron core; three-phase alternating current or multiphase alternating current is switched into the primary winding; and the Dewar flask is filled with liquid nitrogen and is made of a nonmagnetic insulating material. The high-temperature superconductive rotating magnetic filed electric maglev system has the advantages that the energy loss is small, the structure is stable, the system is simple to control, mechanical vibration, noise and a gyroscope effect do not exist because a mechanical rotating mechanism is not used, the system is suitable for large-air-gap levitation places and intrinsically and statically stable maglev can be realized.
Owner:BEIJING JIAOTONG UNIV
Air conditioner start and stop control device
PendingCN108397880AReduce lossAvoid mechanical lossMechanical apparatusLighting and heating apparatusAutomatic controlElectricity
The invention relates to an air conditioner start and stop control device. The air conditioner start and stop control device comprises a circuit board, a control module inserted and connected in the circuit board, and a power source for providing voltage for the circuit board. The circuit board is electrically connected with an environment temperature detecting head for detecting the room temperature and an air conditioner temperature detecting head for detecting the air conditioner refrigerating temperature, and the environment temperature detecting head and the air conditioner temperature detecting head are electrically connected with the control module. The control module is electrically connected with a pressing contact used for pressing an air conditioner switch and controlled by thecontrol module. Thus, the externally-arranged pressing contact is used for simulating the finger pressing of a worker, the effect of automatic air conditioner start and stop control is achieved, an air conditioner runs in need according to the input and quit of a capacitor, and the effect of energy saving is achieved; and the indirect technology transformation is utilized, machine inner structuresdo not need to be damaged so that the situation that the electrical product three-guarantee policy is effective for the air conditioner cannot be influenced, and later maintaining work of the air conditioner is facilitated.
Owner:GUANGDONG POWER GRID CO LTD +1
Electrode for electric arc furnace steelmaking and spraying method thereof
InactiveCN108064097AEffective protectionAvoid mechanical lossElectric discharge heatingGraphite electrodeSpray method
The invention discloses an electrode for electric arc furnace steelmaking and a spraying method thereof, which belong to the technical field of metallurgical production equipment accessory maintenanceand repair processes and have the advantages that the service life is longer, and the efficiency of being oxidized during a use process is reduced obviously. The electrode comprises a graphite electrode body and a high-temperature protection layer, wherein the high-temperature protection layer coats the surface of the graphite electrode body. The spraying method uses compressed air as power to online spray pulpy fire-resistant material on the graphite electrode body to acquire the electrode.
Owner:RUI STEEL INDAL OF PANZHIHUA GANGCHENG GROUP
Angle sensor
InactiveCN103673871AAvoid mechanical lossImprove reliabilityUsing electrical meansConverting sensor output electrically/magneticallyAngular degreesEngineering
The invention discloses an angle sensor which comprises a shell. One side face of the shell is provided with an open space, a rotor and a Hall chip are arranged in the open space, a magnet is disposed on the rotor, and the magnet is bias relative to the Hall chip. A non-contact structure is adopted, a bias structure is adopted on the Hall chip relative to the magnet, mechanical loss caused by mechanical friction is overcome, reliability and durability of products are improved, gear signal output requirements can be met, and analog or digital output is achieved.
Owner:HAMLIN ELECTRONIC (SUZHOU) CO LTD
Structure of modular robot actuation system
The present invention relates to a structure of a module of a robot having at least two degrees of freedom (2DOF). More particularly, the present invention relates to a structure of a modular robot actuation system, comprising: a fixed housing forming the outer appearance of the module; a rotatable housing connected to the fixed housing; and an input connector and an output connector with respective cables connected to the outside of the fixed housing and to the outside of the rotatable housing, respectively. The input connector and the output connector are interconnected through the inside of the fixed housing and the inside of the rotatable housing. The cable connected to the output connector of the rotatable housing is connected to the input connector of the fixed housing forming the outer appearance of another module, which is identical to the above-described module and also has a rotatable housing.
Owner:KOREA INST OF MACHINERY & MATERIALS
Pure electric vehicle single-axle double-motor drive system
InactiveCN109177708AImprove economyGuaranteed driving dynamicsElectric propulsion mountingMotor driveElectric machine
The invention relates to a pure electric vehicle single-axle double-motor drive system. The pure electric vehicle single-axle double-motor drive system is characterized in that two motors are coaxially arranged through respective clutches, and a shaft is located between a front axle and a rear axle of the vehicle; on the shaft, two motors are dynamically coupled via respective gear set and drive the rear axle of the vehicle via another gear set and a differential; the two motors are connected with a battery pack through a high-voltage distribution cabinet; the two motors are controlled to workindividually or together according to different vehicle load requirements. The pure electric vehicle single-axle double-motor drive system realizes the switching between different working modes, so that the two motors work in the respective high-efficiency areas, thus effectively improving the efficiency and economy of the drive system.
Owner:WUHAN UNIV OF TECH
Double-stator driven power unit integrated spiral mixed-flow type water jet propulsion pump
ActiveCN111232173ARealize integrated designAvoid noisePropulsive elementsPropulsive transmissionPropulsive efficiencyControl theory
The invention discloses a double-stator driven power unit integrated spiral mixed-flow type water jet propulsion pump. The invention relates to the technical field of water jet propulsion, a magneticsuspension bearing is composed of a first magnet and a second magnet, the first magnet is embedded and fixed on the inner wall of a shell at two ends of a winding coil, the second magnet is fixed at two ends of a permanent magnet, and the first magnet and the second magnet at the same end are arranged in a homopolar repulsion manner; wherein one end of the shell is a water body inlet, a rectification spray pipe is integrally formed at the other end, a plurality of guide vane blades are integrally formed on the inner wall of the rectification spray pipe, a guide device is arranged in the rectification spray pipe, and a water body outlet is formed at the other end of the rectification spray pipe; and a fixed bracket is arranged in the shell in the water body inlet. And the electric energy conversion rate is high, the propulsion efficiency and the damage pipe redundancy of the submarine are improved, the space in the naval vessel is effectively saved, and the radiation noise is effectively shielded and reduced.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
Plasma height adjusting apparatus and method
InactiveCN107991289AHigh precisionImprove automationAnalysis by thermal excitationPlasma GasesOptical fiber probe
The invention discloses a plasma height adjusting apparatus and method. The apparatus comprises an MPT(microwave plasma torch) module, an optical fiber probe, an optical system, a camera, a detectionterminal, a control panel and an exhaust module, wherein the MPT module is a plasma torch tube; the exhaust module is used for exhausting a chamber of the plasma torch tube; the optical fiber probe isused for acquiring an optical signal generated by plasma; the optical system is connected with the optical fiber probe and used for generating a spectrogram according to the optical signal transferred from the optical fiber probe; the camera is used for photographing a plasma image; and the detection terminal is used for controlling an exhaust velocity of the exhaust module by virtue of the control panel, calculating a signal-to-background ratio according to the spectrogram generated by the optical system and identifying the plasma image photographed by the camera so as to obtain a plasma height. According to the plasma height adjusting apparatus and method, the concentration of plasma gas is changed by virtue of exhaustion, and then the plasma height is further indirectly changed, so that an actual imaging point is disposed in an optimum observation interval of plasma, thereby improving the detection precision.
Owner:中控全世科技(杭州)有限公司
High-efficiency automatic controlled heating water heater
InactiveCN106766187AAvoid affecting useReduce consumptionWater heatersAutomatic controlDisplay device
The invention discloses a high-efficiency automatic controlled heating water heater. The high-efficiency automatic controlled heating water heater comprises a cold water inlet, a machine case, an inner container, a water storage box, a heating rod, a dry-heating-resistant device, a hot water outlet, a water-break detection ball, a water inlet valve controller, a temperature indicator, a temperature receptor, a control panel, a regulation control cabinet, a binding post, a heating processor and a circuit box. The cold water inlet is connected with the machine case. The water-break detection ball is located below the cold water inlet. The heating rod is connected with the dry-heating-resistant device. The temperature indicator is connected with the control panel. The regulation control cabinet is located below the control panel. The binding post is connected with the machine case. The circuit box is fixed to the position below the regulation control cabinet. The high-efficiency automatic controlled heating water heater is provided with the temperature receptor, and control over the water temperature is better. The water heater is provided with an anode magnesium-aluminum rod descaling device, and power consumption is low. The water heater is made of an aluminum alloy material, the practicality is more prominent. Time is saved. The cost is lowered. The purposes of time saving and trouble saving are achieved.
Owner:湖南固诚电气技术有限公司
Convenient polishing machine for machining bearings
InactiveCN105345642ASimple materialImprove wear resistanceGrinding carriagesPolishing machinesDrive shaftDrive motor
The invention discloses a convenient polishing machine for machining bearings. The convenient polishing machine comprises a driving motor, a polishing wheel, a rotating shaft, a machine head device, a machine body, a lifting frame, a workbench, a circuit box, a driving rotating wheel, a driving shaft, an adjuster, a transmission belt, a protective cover, a controller, a control panel and a fixed base. The driving motor is connected with the driving rotating wheel. The driving shaft is fixed to the right side of the driving rotating wheel. The transmission belt is located on the inner side of the protective cover. The rotating shaft is fixed to the left side of the transmission belt. The control panel is located on the outer side of the machine body. The fixed base is connected with the machine body. The polishing wheel of the convenient polishing machine for machining the bearings is made of good materials and has high abrasion resistance. The lifting equipment is arranged, so that the situation that the polishing direction is single during working is well avoided. The size of the convenient polishing machine is small, and the high-quality polishing equipment is arranged, so that the polishing efficiency is greatly improved, the polishing speed is increased, and the production development speed is increased.
Owner:LEIYANG XINDAWEI TECH
Efficient automatic air humidifying equipment
InactiveCN106765811ANot easy to damageUniform humidification rangeMechanical apparatusSpace heating and ventilation safety systemsTime efficientAir purifiers
The invention discloses efficient automatic air humidifying equipment. The efficient automatic air humidifying equipment comprises a lifting handle rack, a water tank, a processor, a water guide pipe, a mist spray outlet, a control panel, air humidity measurement instruments, a valve controller, a regulating box, a machine body, an air purifier, a purified air outlet, a driving shaft, a driving rotating wheel, a miniature motor and a circuit box. The lifting handle rack is connected with the water tank. The water guide pipe is located on the left side of the processor. The air humidity measurement instruments are located on the right side of the control panel. The purified air outlet is fixed to the outer side of the machine body. The circuit box is mounted below the air purifier. The efficient automatic air humidifying equipment is relatively uniform in humidification range. The humidification effect is obviously improved. The efficiency is greatly improved. The humidification speed is increased. The problem of manual regulation is solved through the humidification measurement instruments and the valve controller. Through the arrangement of the valve controller, power consumption is reduced, time is saved, and a humid air environment is created.
Owner:湖南固诚电气技术有限公司
Brushless direct-current variable frequency motor and control system using same
InactiveCN103326531APlay the role of energy savingRealize reversing operationSpeed controllerBatteries circuit arrangementsMemory moduleElectronic differential
The invention relates to the field of motors, and discloses a brushless direct-current variable frequency motor and a control system using the brushless direct-current variable frequency motor. The brushless direct-current variable frequency motor comprises a stator of an exciting winding and a rotor, and a trapezoid groove is formed in the inner surface of the rotor; a plurality of RbFeB magnets of the same nature are arranged inside the trapezoid groove; an iron core with an omega-shaped groove is arranged on the outer surface of the stator. The brushless direct-current variable frequency motor has the advantages of being large in power and saving energy. The control system using the brushless direct-current variable frequency motor comprises a microprocessor, a motor frequency converter, a display controller, an electronic differential, a vehicle speed setting and memory module, an electric vacuum pump braking power-assisting control system, an electric oil pump steering wheel power-assisting control system and a battery charger. When the control system using the brushless direct-current variable frequency motor is used by a motor vehicle, power is large, energy is saved, and environment is protected.
Owner:杨志军
Smooth electromagnetic braking method and device suitable for brushless DC motor
ActiveCN106130418BReduce volumeAvoid mechanical lossTorque ripple controlStopping arrangementsBrake torqueLow speed
Owner:TIANJIN UNIV
Sensor type door lamp control switch
InactiveCN102036440AExtended service lifeReduce volumeElectronic switchingElectric light circuit arrangementKey pressingDIAC
The invention relates to a sensor type door lamp control switch which is characterized by comprising a sensor and a trigger magnet. The sensor and the trigger magnet are respectively arranged on two relatively moving members; a sensor circuit is arranged in the sensor and comprises a normally open reed switch used as a sensing element, a bidirectional thyristor for controlling the ON and OFF of a lighting circuit, and a capacitance-type resistor; the normally open reed switch is connected between a T1 pole and a gate pole of the bidirectional thyristor; the members are a box body and a box door; the sensor is fixed to the open periphery of the box body; and the trigger magnet for controlling the ON and OFF of the normally open reed switch is arranged at the corresponding position on the inner side of the box door. The reed switch and the capacitance-type resistor form a control loop, when the trigger magnet approaches to the sensor, the normally open reed switch is closed, the bidirectional thyristor is switch off due to no trigger signals coming from the gate pole, the lighting circuit is off, and thus, the non-contact type control of the door lamp is completed, the mechanical wear of a switch key is reduced, and the service life of the control switch is prolonged.
Owner:HAMLIN ELECTRONIC (SUZHOU) CO LTD
Novel liquid metal transfer pump
ActiveCN101451532BSolve delivery problemsAvoid enteringSpecific fluid pumpsPump componentsImpellerDrive shaft
The present invention related to a fluent metal delivery pump which includes a pump case, a drive capstan and blade, characterized in that the pump case is a upright cylinder; the drive capstan is a screw axis mounted inside the cylinder; and the blade is helical blade surrounding the screw axis; the screw axis is supported by a gear bearing that fixed above the cylinder; and a drive capstan is supported by the gear bearing seat that coaxially connected with the cylinder. sealing blade wheel is provided in the invention which can rotate when driven by the drive capstan and generate centrifugal pull to form some certain negative-pressure inside the pump case, realize dynamic sealing of the pump, prevent cadmium liquor from overbrimming from the gear bearing seat. A structure that utilizingpart above the liquid level of the cylinder clad the insulating course is adopted in the invention, so that cadmium liquor remained inside the pump will not cooled quickly after pump stopped which can prevent the remained cadmium liquor from quick crystallization and make mechanical damage to each components, and can prolong service life of the pump.
Owner:ZHUZHOU SMELTER GRP
Catalyst packing device of bubble tower-type slurry bed reactor and catalyst packing method of bubble tower-type slurry bed reactor
InactiveCN104204142AAvoid mechanical lossIncrease investmentLiquid hydrocarbon mixture productionHydrocarbonsProcess engineeringProduct gas
Provided is a catalyst packing device disposed at a bubble tower-type slurry bed reactor for FT synthesis. The packing device comprises, disposed adjacent to the reactor, a slurry preparation cell for preparing a slurry S from an FT synthesis catalyst and a slurry preparation oil, a top communicating pipe for guiding slurry from the reactor to the slurry preparation cell and a bottom communicating pipe for guiding slurry from the slurry preparation cell to the reactor, and an equalizing pipe for communication between the inside of the reactor and the inside of the slurry preparation cell. The top communicating pipe is inclined down from the reactor toward the slurry preparation cell and the bottom communicating pipe is inclined up from the reactor toward the slurry preparation cell. Inert gas introduction means for introducing inert gas are disposed at the slurry preparation cell.
Owner:JAPAN OIL GAS & METALS NAT CORP +5
Spiral rotor and spiral expansion mechanism
ActiveCN103726883BPrevent leakageImprove utilization efficiencyEngine of intermeshing engagement typeEngine componentsThree-dimensional spaceMechanical energy
The invention relates to a spiral cone rotor and a spiral cone expansion mechanism. The spiral cone rotor is on the basis of a plane conjugate curve which can form a continuous variable area; the curve extends to form a convex rotor with a three-dimensional space curved surface, a concave rotor with a three-dimensional space curved surface and an outer shell with double inner conical surfaces; spiral continuous, volume-variable and closed working space is generated by the opposite rotation between the convex rotor and the concave rotor. A high-pressure gaseous working medium enters the working space, pressure is released through volume expansion to push the convex rotor and the concave rotor to perform continuous opposite rotation; the internal energy of the working medium is converted into mechanical energy to do work. Compared with the prior art, the contacts among the convex rotor, the concave rotor and the outer shell are tight, the problem of leakage triangle is avoided; moreover, in the continuous opposite rotating process of the convex rotor and the concave rotor, the processes of gas inlet, expansion work and gas exhaust are completed by the high-pressure gaseous working medium continuously. The spiral cone rotor does not have an independent ventilation mechanism, so that the mechanical loss is minimized.
Owner:北京发源动力机械设计研究有限公司
Landing gear for plant protection unmanned aerial vehicle with buffering function
InactiveCN108639314AAvoid damageExtended service lifeLaunching weaponsUndercarriagesLanding gearUncrewed vehicle
The invention discloses a landing gear for a plant protection unmanned aerial vehicle with a buffering function. The landing gear for the plant protection unmanned aerial vehicle with the buffering function comprises a landing gear body. A main rod is arranged on the landing gear body. A bottom supporting rod is arranged on the landing gear body. A connecting rod is arranged between the main rod and the bottom supporting rod. An installation frame is arranged on the outer wall of a connecting sleeve, and a buffering mechanism is arranged on the landing gear body. A buffering sleeve is arrangedon the buffering mechanism, a buffering supporting rod is arranged in the buffering sleeve, a polygonal connecting tenon is arranged at the bottom of the buffering supporting rod, a rubber connectingseat is arranged in the buffering sleeve, an elastic piece is arranged in the buffering sleeve, and a sliding groove is formed in the inner wall of the buffering sleeve. A sliding block is arranged in the sliding groove, and a reset spring is arranged at the end of the sliding block. The landing gear for the plant protection unmanned aerial vehicle with the buffering function has simple structure, a large number of mechanical losses in the use process is can effectively avoided by a buffer structure, the service life of the landing gear body is prolonged, and the landing gear body is protected by the buffer structure, so that the damage of the landing gear body is avoided, the use is convenient, and the practicability is high.
Owner:福建天眼遥测信息科技有限公司
Gear compressor
InactiveCN100541051CImprove the coefficient of performanceReduce vibrationCompression machinesRotary piston pumpsGear wheelEngineering
Owner:LG ELECTRONICS (TIANJIN) APPLIANCES CO LTD
Pump body structure of compressor and compressor with same
ActiveCN102251953BAxial compactImprove performancePositive displacement pump componentsPositive-displacement liquid enginesKinematic pairEngineering
The invention provides a pump body structure of a compressor and a compressor with the same, wherein the pump body structure of the compressor comprises a crankshaft and a lower flange. The crankshaft comprises a long shaft, a short shaft and an eccentric shaft, the eccentric shaft is connected between the long shaft and the short shaft, the short shaft is provided with a first matching surface, the lower flange is provided with a second matching surface matched with the first matching surface, and the first matching surface is a rotating surface capable of bearing an axial load. The invention further provides a compressor comprising the pump body structure. Through the pump body structure and the compressor, problems of mechanical loss, noises, vibrations and the like are solved by the elimination of capsizing moment and the realization of automatic alignment; on the foundation, an oil pipeline is designed, thus the lubrication between kinematic pairs is increased, the abrasion is reduced, and the axial structure of the compressor is more compact; therefore, the effect of improving the reliability and the performances of the compressor is achieved.
Owner:ZHUHAI GREE REFRIGERATION TECH CENT OF ENERGY SAVING & ENVIRONMENTAL PROTECTION
Rotating shaft pipe end structure and method for pipe routing prevention and control for deep-sea pipelines
ActiveCN111577981BShorten the installation periodGuaranteed rotatabilityPipe laying and repairEngineeringStructural engineering
The present invention disclosed a rotating shaft -end structure and the method of preventing and controlling the control of the tube of the deep -sea pipeline, including the sleeve, the wing plate, and the limited block;Including the left wing and right wing plate, the left and right wing plates are set on both sides of the sleeve. The tail of the left and right wing plates connects the first end of the sleeve through the hinge, so that the left wing plate can surround the hinge of the left wing root hinge hingeRotate freely, the right -wing plate can rotate freely around the hinge of the roots of the right -wing plate; the limited block body includes the left -limited block and the right -limited block body.On the second ends of the sleeve, the left -limited block and the left -wing plate are relative to each other. The right limit block and the right of the right wing plate are relative to the minimum open angle of the left and right wing plates.The present invention is installed on one end of the pipeline, and the structure that can generate changes to the pipeline with a axial deformation of the pipeline is used to reduce or eliminate the pipeline pipeline phenomenon.
Owner:TIANJIN UNIV
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