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70results about How to "Characteristic impact" patented technology

Measurement specimen and measurement method for interface characteristic of embedded rib reinforced concrete beam

The invention discloses a measurement specimen and a measurement method for an interface characteristic of an embedded rib reinforced concrete beam. The specimen comprises a combined reinforced rib, wherein a through groove is formed in the center of the section of the combined reinforced rib in the axial direction; strain gauges are uniformly distributed on the inner wall of the through groove along the axial direction of the through groove. The method comprises the following steps that the combined reinforced rib is embedded into the concrete beam, and according to the conventional four-point bending static load test, an automatic static strain acquisition instrument records data epsilon f of the strain gauges and the cracking load Pcr, the yield load Py and the ultimate load Pu of the beam in real time; according to the strain data measured actually, the shearing strength of an interface of the combined reinforced rib or a CFRP rib with a glue agent is obtained by calculation; the Pu theory value is obtained by calculating according to the calculating method of the concrete reinforcing strength in the concrete reinforcing theory. By comparing the errors of the Pu theory value with the Pu, the result shows that the specimen can be used for improving the measurement precision of parameters of the interface characteristic of the reinforced concrete beam, and the strain measurement is convenient and easy.
Owner:HUNAN INSTITUTE OF ENGINEERING

Vibration energy recovery device of automobile shock absorber

The invention discloses a vibration energy recovery device of an automobile shock absorber. The vibration energy recovery device comprises an energy recovery part and an energy conversion part, wherein the energy recovery part comprises a stator and a mover; the stator comprises a stator fixing plate and a cylindrical stator core; the stator fixing plate is fixedly connected with the outer side of an oil storage cylinder barrel; the cylindrical stator core is fixed on the stator fixing plate; the cylindrical stator core is surrounded by a plurality of groups of silicon steel laminated sheets fixed on the stator fixing plate; a coil winding is embedded into each stator inner ring groove; the mover comprises a hollow cylinder which is fixedly connected with a piston rod; a plurality of annular permanent magnets and a plurality of mover magnetic poles, which are in staggered arrangement, are fixed on the excircle surface of the hollow cylinder; the homopolar surfaces of any two adjacent annular permanent magnets are opposite; the energy conversion part comprises a rectifier and a storage battery; an input end of the rectifier is connected with a coil adapter; and an output end of the rectifier is connected with the storage battery. According to the vibration energy recovery device of the automobile shock absorber, the energy carried by a suspension system can be recovered in real time in an automobile driving process, so that the targets of energy conservation and emission reduction of the automobiles are achieved.
Owner:TIANJIN UNIV

Automobile suspension system vibration energy recovering apparatus

The invention discloses an automobile suspension system vibration energy recovering apparatus comprising an energy recovering part and an energy converting part. The energy recovering part is formed by a stator and a mover inserted into the stator, wherein the stator is formed by a cylindrical stator iron core fixedly connected with the external side of an oil storage cylinder; a plurality of circular grooves are arranged on an internal cylindrical surface of the cylindrical stator iron core; a coil winding set is embedded into each circular groove; the mover consists of a cylindrical mover magnet yoke fixedly connected with a piston rod; a plurality of circular permanent magnets are fixed on the external cylindrical surface of the cylindrical mover magnet yoke; and magnetic flow directions of any two adjacent circular permanent magnets are opposite. The energy converting part is formed by a rectifier and a storage battery, wherein an input end of the rectifier is connected with a coil joint; and an output end of the rectifier is connected with the storage battery. Energy carried by the suspension system can be recovered in real time during the driving of the automobile, so automobile energy conservancy and emission reduction can be achieved.
Owner:TIANJIN UNIV

Thin film transistor and manufacturing method thereof, array substrate and display device

Embodiments of the invention provide a thin film transistor, a manufacturing method thereof, an array substrate, and a display device, and relates to the field of electronic devices. The thin film transistor is capable of reducing probability that metal atoms in a second metal layer in a source electrode and/or a drain electrode diffuse to a channel region. The thin film transistor comprises: an active layer disposed on the substrate; and a source electrode and a drain electrode in contact with the active layer; wherein the source electrode and the drain electrode comprise a first metal layerand a second metal layer arranged in a stacked manner, and the first metal layer is adjacent to the active layer relative to the second metal layer. Area of an overlapping area of orthographic projection of the second metal layer in the source electrode and the active layer on the substrate is smaller than area of an overlapping area of orthographic projection of the first metal layer and the active layer in the source electrode on the substrate; and/or area of an overlapping area of orthographic projection of the second metal layer and the active layer in the drain electrode on the substrateis smaller than area of an overlapping area of orthographic projection of the first metal layer in the drain electrode and the active layer on the substrate.
Owner:HEFEI XINSHENG OPTOELECTRONICS TECH CO LTD +1

Full-automatic proportioning device and method of lubricating agent for thread throwing of ceramic fibers

PendingCN106823906AHigh precisionAvoid the lack of precision caused by manual proportioningTransportation and packagingRotary stirring mixersFiberWater pipe
The invention discloses an full-automatic proportioning device and method of a lubricating agent for thread throwing of ceramic fibers, belongs to the field of proportioning devices of lubricating agents for thread throwing of ceramic fibers, aims to solve the technical problem that the conventional lubricating agent for thread throwing of the ceramic fibers has the defects of low proportioning accuracy and impossibility in continuous production. The full-automatic proportioning device comprises a bracket, liquid level detection devices, a stirring device, a controller, a water tube, a liquid outlet tube, a lubricating agent container, a lubricating agent metering cup and an upper container, wherein the lubricating agent container, the lubricating agent metering cup and the upper container are arranged on the bracket; the lubricating agent metering cup and the upper container are provided with upper ports and lower ports which are arranged one above the other; the upper port of the upper container communicates with the water tube which is positioned above the upper port of the upper container; the lower port of the upper container communicates with the liquid outlet tube; the liquid outlet tube, the water tube and liquid delivery tubes are provided with switch valves; the lubricating agent metering cup and the upper container correspond to the liquid level detection devices respectively; the liquid level detection devices and the stirring device are connected with the controller. The method is used for preparing lubricating liquid by using the full-automatic proportioning device of the lubricating agent for thread throwing of the ceramic fibers.
Owner:山东红阳高温节能材料股份有限公司

Controllable vibration damper for motor vehicles

The invention relates to a controllable vibration damper (1), in particular for a vehicle body, comprising a cylindrical tube (10) which has a hydraulic fluid that is sealed in the cylindrical tube, a piston (2) which is axially movable within the cylindrical tube (10) along a cylindrical tube axis (A) and which divides the cylindrical tube (10) into two work chambers (11, 21), and a piston rod (3) which is oriented parallel to the cylindrical tube axis (A) and which is connected to the piston (2) at one end, multiple fluid passages (12, 22) from one work chamber (11, 21) to the other work chamber (21, 11) being provided in the piston. A first valve assembly (13) for damping the piston movement in a first actuation direction (R1) is arranged in a first fluid passage (12), and a second valve assembly (23) for damping the piston movement in a second actuation direction (R2) is arranged in a second fluid passage (22), each valve assembly (13, 23) having at least one valve disk (14, 24) which sits on a valve seat (15, 25) in a closed valve position and is at least partly removed from the valve seat (15, 25) in an open valve position. Each valve assembly (13, 23) comprises a pilot control chamber (16, 26), and a pressure in the pilot control chamber (16, 26) urges the valve disk (14, 24) into the closed valve position, the pressure in each of the pilot control chambers (16, 26) being adjustable. According to the invention, one of the pilot control chambers (16, 26) is delimited by a base (4), a cylindrical lateral wall (5) which is stationary relative to the base (4) and which is coaxial to the cylindrical tube axis (A), and a dimensionally stable cover (6) which can be moved parallel to the cylindrical tube axis (A) in a radial manner within the cylindrical lateral wall (5).
Owner:THYSSENKRUPP BILSTEIN

Flexible direct-current short-circuit fault protection method based on thyristor chain and superconducting current limiters

ActiveCN113036724ADifficult to breakAvoid capacity constraintsElectric power transfer ac networkSingle network parallel feeding arrangementsInductorLimiter
The invention discloses a flexible direct-current short-circuit fault protection method based on a thyristor chain and superconducting current limiters. A converter used in a flexible direct-current power transmission system is a modularized multi-level converter cascaded based on half-bridge sub-modules and is of an A-B-C three-phase structure, and each phase comprises an upper bridge arm and a lower bridge arm; each bridge arm consists of a plurality of half-bridge sub-modules and a bridge arm inductor; an alternating current side output port of the modular multilevel converter is connected in parallel with the thyristor chain; the three-phase lines of the AC side of the modular multilevel converter are each connected in series with a superconducting current limiter; the upper ends of the three-phase upper bridge arms of the modular multilevel converter are connected to a direct current side through a first mechanical switch after being short-circuited, and the lower ends of the three-phase lower bridge arms are connected to the direct current side through a second mechanical switch after being short-circuited. According to the protection method, alternating-current and direct-current side current isolation under a fault condition is achieved by turning on the thyristor chain, the direct-current side fault current is reduced to zero, the alternating-current side fault current is limited through the superconducting current limiters, and therefore direct-current short-circuit fault protection of the flexible direct-current power transmission system is achieved.
Owner:SOUTHEAST UNIV

Food conveyance pipeline sterilizing device and method

InactiveCN106913891AGrowth inhibitionDestroy biological structuresChemicalsHigh concentrationMicrobubbles
The invention discloses a food conveyance pipeline sterilizing device and method and belongs to the field of pipeline sterilization. The device mainly comprises an ozone generating device, a metal pipe, a microbubble generating device, a diffusion pipe, a dissolving device, a food conveyance pipeline and an ozone water return pipeline. The ozone generating device is connected to the microbubble generating device through the metal pipe, then to the dissolving device through the diffusion pipe and further to the food conveyance pipeline, and finally ozone water flows back to the dissolving device through the ozone water return pipeline. The realization way is that ozone is generated by the ozone generating device and conveyed into the microbubble generating device, generated microbubbles containing ozone are conveyed into the dissolving device so that high-concentration ozone water can be generated within a short period of time, and high-concentration ozone water is conveyed to the food conveyance pipeline for sterilization and then flows back to the dissolving device. The food conveyance pipeline sterilizing device and method have the advantages that the utilization rate of ozone is high, the investment is low, the operation cost is low, the sterilization efficiency is high, and the application range is wide.
Owner:浙江中兵环保股份有限公司

Flexible DC short-circuit fault protection method based on thyristor chain and superconducting current limiter

The invention discloses a flexible DC short-circuit fault protection method based on a thyristor chain and a superconducting current limiter. The converter used in the flexible DC power transmission system is a modular multi-level converter based on cascaded half-bridge sub-modules: ABC three-phase structure, each phase includes an upper bridge arm and a lower bridge arm, each bridge arm is composed of several half-bridge sub-modules and a bridge arm inductor; the output port of the modular multi-level converter AC side is connected in parallel with a thyristor A superconducting current limiter is connected in series with each of the three-phase lines on the AC side of the modular multilevel converter; the upper ends of the three-phase upper arms of the modular multilevel converter are short-circuited and connected to the DC side through the first mechanical switch , the lower end of the three-phase lower bridge arm is short-circuited and then connected to the DC side through the second mechanical switch. The protection method realizes the current isolation of the AC and DC sides under fault conditions by opening the thyristor chain and reduces the fault current of the DC side to zero, and limits the fault current of the AC side through the superconducting current limiter, thereby realizing the DC short-circuit fault protection of the flexible DC transmission system.
Owner:SOUTHEAST UNIV
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