Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Hiro

5245results about How to "Low maintenance" patented technology

Device and technique for producing cyclohexane by benzene hydrogenation

The invention discloses a device and technique for producing cyclohexane by benzene hydrogenation. The device for producing cyclohexane by benzene hydrogenation comprises a reactor, a superfine bubble generator and a bubble breaker, wherein the reactor is provided with a first containing cavity; the wall of the first containing cavity is provided with a feed port, a circulation discharge port, a circulation return port and a gas phase outlet; the superfine bubble generator is provided with a second containing cavity; the wall of the second containing cavity is provided with a return port and a gas phase outlet; the return port of the superfine bubble generator communicates with the circulation return port of the reactor; the bubble breaker is arranged in the second containing cavity; the bubble breaker is provided with a gas phase inlet and a liquid phase inlet which communicates with the circulation discharge port of the reactor; and the gas phase inlet of the bubble breaker communicates with the gas phase outlet of the reactor. The device disclosed by the embodiment of the invention has the advantages of high mass transfer efficiency, high reaction rate, short reaction time, low material consumption and energy consumption, simple structure, low manufacturing cost and low maintenance cost.
Owner:NANJING UNIV

Energy storage flywheel with minimum power magnetic bearings and motor/generator

An optimized flywheel energy storage system utilizing magnetic bearings, a high speed permanent magnet motor / generator, and a flywheel member. The flywheel system is constructed using a high strength steel wheel for kinetic energy storage, high efficiency magnetic bearings configured with dual thrust acting permanent magnet combination bearings, and a high efficiency permanent magnet motor generator. The steel wheel provides a cost effective, high speed construction for the energy storage rotor.
Owner:VYCON ENERGY INC

Design method of unrestricted suspension type initiative gravity compensation system

ActiveCN103482089AOvercome the influence of microgravity horizontal directionHigh compensation accuracyCosmonautic condition simulationsTorque motorEngineering
Provided is an unrestricted suspension type initiative gravity compensation system. The system is composed of an unrestricted connecting module, a vertical constant tension suspension module, a horizontal follow-up module and a control module. The unrestricted connecting module comprises a connecting sleeve, an outer mounting frame, a force applying piece and a low friction bearing, and enables a spacecraft to carry out approximate unrestricted rotation round a center of mass. The vertical constant tension suspension module comprises a torque motor, a pinion and rack, a suspension hanging spring and a tension sensor, and enable the tensile force borne by the spacecraft in movement is equal to gravity. The horizontal follow-up module comprises a servo motor, a guide rail, a synchronous belt and a tilt angle sensor, and the suspension module is made to carry out horizontal movement along with the spacecraft to guarantee that the hanging spring is in a vertical state. The control module comprises an acquisition card, a driver and a motion control card. The design method of the unrestricted suspension type initiative gravity compensation system can compensate the gravity of the spacecraft in a ground test environment, further is used for reproducing the real movement of the spacecraft in the interspace microgravity environment, has the advantages of being stable in running, through in compensation and the like, and can provide the approximate unrestricted microgravity environment for movements with six degrees of freedom.
Owner:BEIHANG UNIV

Airborne wind turbine electricity generating system

An airborne system for producing electricity from wind energy includes a shaft, at least two turbines rotatably mounted to the shaft and arranged to rotate independent of one another and in opposite directions when subjected to the same wind, and generators which convert rotation of the turbines into electricity. The magnitude of electricity generation by the generators is related to the magnitude of torque induced by the generators on the shaft, and the electricity generation by the generators may be controlled such that torques induced on the shaft by the generators is controlled such that a sum of torques induced on the shaft is substantially zero. A lifting structure generates a lifting force to lift the turbines to a desires altitude, and an anchoring system anchors the turbines relative to the ground. Generated electricity is conducted to users, to electricity storage, or to processing components.
Owner:MELLER MOSHE

Self-supply micro radio sensing network node based on the piezoelectric vibration power generation

The related self-powered minimize wireless sensor network node for state monitor based on piezoelectric vibration comprises: a piezoelectric vibration power 1 including a long-term storage capacitor 10, a DC / DC converter 9, a voltage stabilizing tube 8, a voltage multiplier 7, and a piezoelectric transducer 6; a microcontroller 4 to operate the power supply of capacitor 10 to device 3 through a controlling switch 6, a RF transmitting device 3, and a sensor 5. Besides, the microcontroller 4 also processes data from sensor 5 and transmits result and control information together to device 3. This invention minimizes node power consumption.
Owner:SOUTHWEAT UNIV OF SCI & TECH

Parallel kinematic positioning system

A parallel kinematic positioning system 10 (PKPS 10) that is comprised of a stationary base plate (12) and an upper movable platform (28) to which is attached a workpiece or an instrument. Between the stationary base plate (12) and the upper movable platform (28) are positionally attached six strut assemblies (50). The six strut assemblies operate a hexapod that include in combination, a counterbalance subassembly (111), a servo motor subassembly (134), a bearing and encoder subassembly (156) and an electronics circuit (190). The combination accurately and repeatably positions the upper movable platform (28) within six degrees of freedom relative to the base plate (12).
Owner:MARCROFT SACHA L +4

Efficient automatic dust-removing and intelligent ventilation system and automatic dust-removing method

The invention relates to the ventilation system field, in particular to an efficient automatic dust-removing and intelligent ventilation system and an automatic dust-removing method. The system comprises an intelligent energy-saving ventilation system housing component and a fan, wherein the intelligent energy-saving ventilation system housing component comprises a dual duct, a dust-discharging duct, a throttle actuating mechanism, a dust screen, a temperature and humidity sensor and a distributed pressure sensor, wherein the temperature and humidity sensor and the distributed pressure sensor are connected with a control system, and the control system drives the throttle actuating mechanism to realize time-sharing and smooth transition of the dual duct and the dust-discharging duct. The beneficial effects of the invention are as follows: the fans of the air feeder unit can be used for several purposes such as air supply and dust removing, thus reducing the equipment cost; the self-cleaning of the filtering screen can be realized, thus prolonging the service life of the filtering screen, reducing replacement frequency and lowering maintenance cost; and by turning on/off the automatic dust-removing and intelligent ventilation system, the normal operation of the devices in an equipment room can be ensured.
Owner:SHENZHEN ZHONGXING SINDI TECH CO LTD

Ciphertext storage and ciphertext retrieval open cloud method and system

The present invention discloses a ciphertext storage and ciphertext retrieval open cloud method and system. The system comprises a plurality of safety assemblies and a server; the server creates one encryption and decryption secret key binding with the personal identity for each login user; the server encrypts and stores the encryption and decryption secret key by using a main secret key; after the server passes the user authentication, the main secret key of the user is returned back to the safety assemblies; the safety assemblies employ the user's main secret key to perform decryption to obtain the user's encryption and decryption secret key and then employ the encryption and decryption secret key to perform encryption of the user's file to be stored and then store the file at a third-party cloud platform; and the file element data of the file to be stored and the ciphertext index of the file to be stored are generated and sent to the server; and the safety assemblies are configured to send the retrieval request to the server, and the server performs retrieval in the ciphertext index according to the keywords in the retrieval request, inquires the file element information according to the retrieval result and returns the file element information back to the user's client.
Owner:INST OF INFORMATION ENG CAS

Road traffic condition detection device based on panorama computer vision

The invention discloses a road traffic condition detection device based on panorama computer vision, comprising a camera device of each measuring point and a microprocessor, wherein the camera device is installed on each road on a road network; the microprocessor is used for evaluating road traffic condition according to the panorama video data of the camera device; and the microprocessor comprises a panorama image acquisition unit, a sampling point, a lane, a lane driving direction customization module, a road congestion state detection module and a road service level judgement module. The invention provides a road traffic condition detection device based on panorama computer vision, which has the advantages of wide detection range, high detection precision, good detection instantaneity and intuitional and clear detection result, is convenient to implement and is convenient to realize on an embedded system; in addition, the road traffic condition detection device has subjective perceptibility index data and objective perceptibility congestion data, and is convenient for each level of road network of a city to comprehensively evaluate the road traffic condition on the aspect of time and space.
Owner:ZHEJIANG UNIV OF TECH

Integrated converting and utilizing co-production method for agricultural waste

The invention relates to an integrated utilizing technology for agricultural waste and in particular relates to an integrated converting and utilizing co-production method for agricultural waste. The integrated converting and utilizing co-production method comprises the following steps: 1. collecting and processing raw materials; 2. carrying out pyrolysis on the raw materials: generating biochar and high-temperature mixed gas; 3. converting the high-temperature mixed gas: converting the high-temperature mixed gas into wood tar, wood vinegar and fuel gas; 4. manufacturing fertilizers; 5. refining fuel oil: converting the wood tar into biofuel oil and wood pitch; 6. purifying the fuel gas: purifying the fuel gas into clean fuel gas; and 7. converting the fuel gas: respectively sending the biofuel gas into a gas generator, a gas supply pipe network and a heat boiler to covert the biofuel gas into heat energy and electricity energy. The agricultural waste can be converted by multiple levels and are combined to be utilized to obtain straw carbon, fuel gas, heat energy, electricity energy, fertilizers, fuel gas and the like. The use ratio of the agricultural waste reaches 100%. The problem that the agricultural waste is stacked and burnt disorderly can be solved, the pollution problem caused by using chemical fertilizers and pesticides for a long time can be solved, and the problem of utilizing energy, fertilizer and oil in rural areas also can be solved.
Owner:周仁福 +2

Advanced control method and system for vertical mill based on model identification and predictive control

The invention relates to raw material grinding in the field of cement process industries, and aims to provide an advanced control method and system for a vertical mill based on model identification and predictive control. The method comprises the following steps of: acquiring real-time data from a distributed control system (DCS) monitoring system; analyzing a variation trend of the operation and technology parameters, and then invoking a pathological working condition expert database for performing trend matching; if a pathological working condition appears, issuing early warning display and giving qualitative adjustment suggestion remind; giving an optimal target set value according to the basic operation condition of the vertical mill and the variation situation of the product quality requirement, and writing into a predictive controller; setting an optimal controlled quantity output according to the optimal target set value, and outputting to the DCS monitoring system to control a field actuator to take action. By adopting the invention, the qualitative adjustment suggestion can be precisely given; a mathematical model of the grinding process of the vertical mill is established and updated in real time; the steady-state error of the control system is reduced; and the grinding process of the vertical mill is instructed, so that the mill can operate stably for long term at a maximum efficiency point, and stable margin is maintained.
Owner:ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products