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88results about How to "Improve the realization effect" patented technology

Virtualized network networking system and data packet sending method

The invention relates to the technical field of computers, in particular to a virtualized network networking system and a data packet sending method. The virtualized network networking system at leastcomprises a central switch of a spine layer, a client VXLAN switch and a gateway VXLAN switch of a leaf layer, a client connected to the client VXLAN switch and a gateway cluster connected to the gateway VXLAN switch, wherein the gateway cluster at least comprises two gateway devices, the gateway VXLAN switch receives a packaging bag corresponding to the data packet, carries out de-encapsulation,determines a target gateway device from the gateway cluster, and sends the data packet to the target gateway device, so that the target gateway device carries out network address translation, and thus the data packet after network address translation is sent to a target server, the load balancing is realized through the gateway cluster, the data packet encapsulation and the forwarding logic are separated, and the gateway device implementation performance and data packet forwarding efficiency are improved.
Owner:TENCENT TECH (SHENZHEN) CO LTD

System and method for realizing OTA upgrade of embedded hardware based on block chain

ActiveCN109889589AUpgrade does not affectImprove upgrade reliabilityUser identity/authority verificationData switching networksComputer networkFirmware version
The invention discloses a system and a method for realizing OTA upgrade of embedded hardware based on a block chain. The method comprises the following steps: constructing a P2P network topological structure comprising a plurality of service nodes downloaded by firmware; taking one service node as a first block node, and converting other service nodes in the P2P network into one block node on theblock chain one by one through a block chain consensus verification mechanism; storing the latest firmware software on the service node, and calculating the node content by using a Hash algorithm to obtain a Hash value of the service node; wherein the node content comprises feature information of the service node and firmware software stored on the service node; and the intelligent terminal downloads the corresponding hash value from the service node of the P2P network, carries out firmware version security verification according to the hash value, downloads and stores the verified firmware software, and upgrades the firmware software. The safe and credible P2P network topological structure is established by using the block chain technology, and the OTA upgrading reliability and safety ofthe intelligent terminal are improved.
Owner:IGRS ENG LAB

Infrared and visible video integration system

The invention relates to a video integration system, and provides a communication protocol of a computer serial port control console and a novel infrared and visible video integration processing system. The novel infrared and visible video integration processing system comprises a console control portion, a camera video acquisition portion, a video integration portion and an integration displaying portion. A vc++ coding controlling and displaying interface is utilized, and the opencv (open source computer vision library) is introduced to process video images, and then an integration result is displayed. Console control includes the control of upward rotation, downward rotation, leftward rotation, right rotation and rotating speed, a thermal infrared imager and a visible light camera are utilized in the camera video acquisition portion to acquire two video information, and zoom and the like of the camera can be controlled via a control interface. By means of a novel visible light and infrared image registration method, the infrared and visible video integration system is simple and quick, and instantaneity of the infrared and visible video integration system which is simple and quick is strengthened. Since the infrared image and visible light image can greatly compensate mutually, the infrared and visible video integration system is high in practicability, good in integration effect and wide in application.
Owner:CHONGQING UNIV

Copper plating substrate-based method for preparing large-area graphene film

The invention relates to a method for preparing graphene on a copper plating substrate. The method is characterized by comprising the following steps of: preparing the graphical copper plating substrate on a silicon chip; and growing the graphene on the copper plating substrate for 2 to 5 minutes at the temperature of between 800 and 1,000 DEG C by using a normal pressure chemical vapor deposition method, using methane as a carbon source and using argon and hydrogen as carrier gases. A graphical graphene film can be directly prepared by the method, and the substrate can be compatible with an integrated circuit (IC) process; and the manufacturing method is simple and low in cost, and can be used for large-scale manufacture.
Owner:SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI

High efficiency vehicle detection method

The invention discloses a high efficiency vehicle detection method comprising steps of vehicle existing information detection and vehicle moving information detection. More particularly, the vehicle existing information detection comprises the following steps: (11), carrying out statistics on a background image model; (12), calculating an image-background difference graph; (13), carrying out binarization processing on the image-background difference graph; and (14), determining whether there is a vehicle or not. Moreover, the vehicle moving information detection comprises the following steps: (21), carrying out difference on two adjacent frames of images and extracting edge points for the difference image; (22), carrying out statistics on a gradient direction histogram of the edge points of the difference image; and (23), determining whether there is a vehicle in a moving state. According to the invention, the provided vehicle detection method has high detection precision and a good detection effect.
Owner:QINGDAO HISENSE TRANS TECH

Method of security probability-based power allocation in millimeter wave system

The invention discloses a method of security probability-based power allocation in a millimeter wave system. The method comprises the following steps: S1, an equivalent channel modeling step, whereina millimeter wave channel model is established, and thus a discrete angular domain channel model is obtained; S2, a power allocation strategy defining step, wherein a minimum value of a receiving signal-to-noise ratio of a legal direction is forcibly restricted, an upper boundary of a receiving signal-to-noise ratio of an eavesdropping direction is limited at the same time an allocation strategy of total transmission power is formulated, and an effect that target security probability meets constraints of quality-of-service demand is guaranteed; and S3, a power allocation step, wherein artificial noise beamforming power allocation based on interruption is carried out, and performance evaluation is carried out on a final allocation result. The invention provides the power allocation method with a data protection function, privacy and confidentiality of data in a wireless communication process can be effectively improved, established security probability is achieved, normalized safety throughput is increased, and system complexity is reduced.
Owner:NANJING UNIV OF POSTS & TELECOMM

Shooting device and continuous shooting method thereof

The invention is applicable to the field of a communication technology and provides a continuous shooting method of a shooting device. The method comprises the following steps of: triggering the shooting device to open a continuous shooting mode; obtaining a picture and edge image characteristics of the picture; carrying out matching processing on the edge image characteristics of the picture and edge image characteristics of newly-obtained view information; and if the edge image characteristics of the picture are matched with the edge image characteristics of the newly-obtained view information, storing the view information. The invention further provides the shooting device. Therefore, the obtained picture can be completely spliced, the effect of panorama realization is enhanced and the experiences of a user are improved.
Owner:DONGGUAN YULONG COMM TECH +1

Forklift efficient energy-saving system with speed regulating function

PendingCN108298474AAvoid complex speed adjustment processSimple controlsServomotor componentsServomotorsSupply energySystem hardware
The invention provides a forklift efficient energy-saving system with a speed regulating function. The forklift efficient energy-saving system comprises a double-acting motor-power generator, a double-acting pump-motor, a sealing pressure oil tank, a liquid-control oil supplementing valve, a two-way hydraulic lock valve, a jacking oil cylinder, a safety valve, a three-phase bridge type inverter, an energy supply-energy storage device, a control device, and an oil tank, wherein the double-acting pump is connected with the double-acting motor-power generator; the double-acting motor-power generator is connected with the three-phase bridge type inverter; the three-phase bridge type inverter is connected with the energy supply-energy storage device; the control device controls a workings stateof the three-phase bridge type inverter and the energy supply-energy storage device; an oil outlet and an oil sucking hole of the double-acting pump-motor are connected with the liquid-control oil supplementing valve; the liquid-control oil supplementing valve is connected with the two-way hydraulic lock valve; the two-way hydraulic lock valve is connected with a rod cavity and a rodless cavity of the jacking oil cylinder; and the rod cavity and the rodless cavity of the jacking oil cylinder are connected with the safety valve. A potential energy recycling system regulates forklift descendingspeed by controlling rotation speed of the double-acting motor-power generator, eliminates throttling loss of a hydraulic loop, reduces heating of hydraulic oil, improves potential energy recycling efficiency; and moreover, system hardware and software are simple and reliable, and realizable degree is high.
Owner:ZHEJIANG UNIV

Cloud disk as well as realization method and realization device thereof

The invention discloses a realization method for a cloud disk. The realization method comprises the following steps: receiving a file request message, and applying a lock service corresponding to the file request message according to the file request message; generating an SCSI commend corresponding to the file request message according to the lock service; receiving file information corresponding to the file request message, which is looked up according to the SCSI commend. The invention further discloses a cloud disk, a server, a cloud storage server, a cloud mapping server and a distributed lock server.
Owner:HANDAN BRANCH OF CHINA MOBILE GRP HEBEI COMPANYLIMITED

Lightweight hashed password digest generation method

The invention discloses a lightweight hashed password digest generation method. The method comprises the following steps: 1) dividing an input message M into a plurality of 64-bit message blocks, setting a 96-bit state parameter S<j> and initializing the 96-bit state parameter S<j> into an all-zero 96-bit string; 2) sequentially processing the message blocks, transforming the message blocks m<j> onto a high-bit 64 bit of the S<j> in an XOR manner, and taking the S<j> being subjected to the XOR processing as the input of internal replacement IP, wherein j is more than or equal to 0 and less than or equal to i, the internal replacement IP adopts a 18-wheel Feistel structure, and the output of the internal replacement IP is updated S<j>; and 3) taking a high 16 bit of a state S<j> obtained after processing of the last m as the digest of the message M. The method is implemented in one clock cycle, and the operation efficiency of an embedded processor chip is increased.
Owner:INST OF SOFTWARE - CHINESE ACAD OF SCI

Vertical transition structure among three-dimensional multi-chip component boards

The invention discloses a transition structure among three-dimensional multi-chip component boards. The transition structure among the three-dimensional multi-chip component boards comprises a three-dimensional component module made of epoxy resin, an upper-layer circuit board sealed in the three-dimensional component module and a lower-layer circuit board sealed in the three-dimensional component module, a metal layer laid on the surface of the three-dimensional component module and a coplanar waveguide sculptured on the metal layer. The upper-layer circuit board is arranged under the lower-layer circuit board in a paralleled mode, and the coplanar waveguide is vertically arranged on the lateral side of the three-dimensional component module and is perpendicular to the upper-layer circuit board and the lower-layer circuit board. The transition structure among the three-dimensional multi-chip component boards is capable of conducting a three-dimensional vertical interconnection on a lateral side of a 3D-Multi Chip Module (MCM), and achieving vertical interconnections among multi-layer circuit boards. Areas of planar circuits are not occupied by the interconnections. Signal transmission has a wide frequency band, little insertion loss, little return loss and a simple structure. Circuit functions of expanding filtering and distributing power and the like are easy to expand on the interconnections arranged on the lateral side. Further, requirements to registration precision of a vertical circuit and a horizontal circuit are not high, accordingly technical implementability is high.
Owner:SOUTHEAST UNIV

RGB-D saliency detection method based on dynamic filtering decoupling convolutional network

The invention discloses an RGB-D saliency detection method based on a dynamic filtering decoupling convolutional network. The method comprises the following steps: acquiring an RGB image tensor and a depth image tensor; respectively inputting the RGB image tensor and the depth image tensor into an encoder network to extract a single-mode feature group, and generating an RGB feature group and a depth feature group according to the characteristics of the encoder network and hierarchical division; respectively putting the features of the RGB feature group and the features of the depth feature group into a respective modal-specific overall guide dynamic enhancement module (MGDEM), and performing single-modal specific feature enhancement; inputting the enhanced RGB features and depth features into a scene perception cross-modal dynamic fusion module (SCDFM), and performing feature fusion between modals, wherein the MGDEM and the SCDFM are both based on a decoupled dynamic filtering convolution structure; and inputting the fused features into a decoder to obtain a predicted significance result. According to the method, accurate saliency prediction is realized.
Owner:DALIAN UNIV OF TECH

Solar cell and method for manufacturing the same

A solar cell and a method for manufacturing the same is disclosed, wherein the solar cell comprises a first cell comprised of a semiconductor wafer with a PN structure; a second cell comprised of a thin film semiconductor layer with a PIN structure, formed on one surface of the first cell; a first electrode layer formed on one surface of the second cell; and a second electrode layer formed on the other surface of the first cell. Unlike the related art solar cell, the solar cell according to the present invention can absorb the light of long-wavelength range in the first cell, and the light of short-wavelength range in the second cell. As a result, it is possible for the solar cell according to the present invention to absorb the light of all ranges, thereby realizing the high efficiency of 20% or above. Also, the entire process time becomes shortened since there is no requirement for the procedure of forming the silicon thin film for a long period of time.
Owner:JUSUNG ENG

Automatic assembling method and automatic assembling system of simple bearingless motor

The invention provides an automatic assembling method and an automatic assembling system for a simple bearingless motor, and the method comprises the following steps: assembling a stator structure, wherein the stator structure comprises a stator frame and a stator coil, the stator frame is provided with a U-shaped groove, and the stator coil is wound at the bottom of the U-shaped groove; installing the stator structure: installing the stator structure on a support of the electric toothbrush; assembling a rotor structure, wherein the rotor structure comprises a rotor body and a magnetic part, the rotor body comprises an elastic piece and an output shaft, the elastic piece and the output shaft are arranged in a staggered manner and are injection-molded into a whole to obtain the rotor body, and then the magnetic piece is mounted on the rotor body to form a rotor structure; installing the rotor structure, wherein the support comprises a support body and a limiting assembly, the elastic piece is fixedly installed on the limiting assembly, and the rotor structure, the stator structure and the support are all spaced. According to the assembling method, electric assembling of the simple bearingless motor and the support is achieved, assembling is convenient, operation steps are reduced, and production efficiency is improved.
Owner:DONGGUAN LEBOND ELECTRONICS TECH CO LTD

Navigation fuzzy control method for AGV trolley in modern logistics

The invention relates to a navigation fuzzy control method for an AGV trolley in modern logistics, the navigation fuzzy control method comprises the following steps: a first step, determining input and output variables; a second step, determining variable domains and fuzzy language values; a third step, determining the membership function of each variable; a fourth step, establishing a fuzzy control rule; a fifth step, quantifying input and output quantities; and a sixth step, defuzzifying. Overshoot in a speed inertia adjustment process can be reduced as much as possible due to instantaneousdeviation rate as one variable, the AGV trolley takes less time when driving along a curve, and the working efficiency is improved. A designed fuzzy controller can improve the stability of the systemand reduce errors. Only the rotation speed, as the output quantity, of a drive wheel motor on one side of the trolley is adjusted, the realizability is higher, the fewer regulating system objects are,the smaller system errors are. Therefore, after automatic curve navigation is realized after simulation of the trolley, by adjusting the rotation speed of the driving wheel motor on one side of the trolley, higher profits can be brought to the industrial engineering.
Owner:UNIV OF JINAN

High precision launching platform switching device control system and control method

The invention provides a high precision launching platform switching device control system comprising an upper computer, a control box, a transfer box and collection and feedback devices. Each collection and feedback device comprises a hydraulic box and a displacement sensor, wherein the hydraulic box is used for providing an electro-hydraulic servo structure, receiving control data to form stepping control signals, controlling the valve port flow of the corresponding electromagnetic valves and forming power output working on execution mechanisms of switching devices, and the displacement sensor is used for measuring the real-time signals such as the displacement and the speed of the switching devices and outputting the signals. The invention also provides a corresponding control method. The control method employs a feedback closed-loop control mode to perform speed control on various switching devices and prevents influence from unpredictable external factors; the calculation, feedback and regulation speeds are high and the motion speed can be controlled in real time, so that repeated adjustment caused by lagging is reduced.
Owner:BEIJING INST OF SPACE LAUNCH TECH +1

Six-degree-of-freedom position posture full-decoupling adjustable clamp

The invention relates to a six-degree-of-freedom position posture full-decoupling adjustable clamp. The dynamic platform posture is compensated through the increment of the posture change range of a workpiece and a workpiece clamp, so that the problem of low implementation ability of the dynamic platform posture of a parallel machine tool is solved. The six-degree-of-freedom position posture full-decoupling adjustable clamp comprises an x-axis shifting and rotating assembly, a y-axis shifting and rotating assembly and a z-axis shifting and rotating assembly. A screw drive mode and a concave-convex dovetail structure form a shifting motion; a worm drive mode and a shaft hole clearance fit structure form a rotating motion; and the six-degree-of-freedom position posture full-decoupling adjustable clamp can be shifted and rotated along the x axis, the y axis and the z axis and around the x axis, the y axis and the z axis through structure innovation and matched mounting of shifting and rotating members for shifting a guide direction to be parallel to and vertical to a rotating shaft. The six-degree-of-freedom position posture full-decoupling adjustable clamp is reasonable and compact in space layout, accurate in positioning and firm in clamping, and the backstroke self-locking property is achieved in driving; and the six-degree-of-freedom position posture full-decoupling adjustable clamp can be manually adjusted and can be also accurately adjusted by software programming and driving a driving part of the clamp by a servo motor.
Owner:安徽纽威吉新能源汽车技术有限公司

Image processing method and system, electronic equipment and storage medium

The invention discloses an image processing method and system, electronic equipment and a storage medium, and the image processing method comprises the steps that a camera implementation layer generates image parameters corresponding to a calling request in response to the calling request initiated by an application program, and the camera implementation layer is an implementation layer based on a software development kit; the image parameters are issued to a hardware abstraction layer; image data transmitted by the hardware abstraction layer is received, wherein the image data is obtained by the hardware abstraction layer from data collected by a camera based on the image parameters; and preset algorithm processing is performed on the image data, and the image data processed by the preset algorithm is transmitted to the application program. According to the method, the application program can call the camera implementation layer to realize image shooting without depending on a hardware abstraction layer to realize shooting, so that the method has relatively high universality.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Hydrogen water filled product, manufacturing method thereof, and manufacturing device thereof

An object of the invention is to develop a novel product filled with hydrogen water, made in such a way that the release of hydrogen from hydrogen water loaded and tightly sealed into a drum is extremely minimal, and a manufacturing technique thereof. The present invention relates to a hydrogen water filled product in which hydrogen water in which hydrogen is dissolved is loaded into a container and is supplied in a tightly sealed state during the time period from circulation until consumption. The hydrogen water filled product is characterized in that the container is a metal can, and in a tightly sealed state in which the can lid is sealed to the can barrel, for example by fully filling the can with the hydrogen water, the container is made in such a way that the loaded hydrogen water does not come into contact with gases other than hydrogen.
Owner:博丰源发展有限公司

Generating circuit and detecting method of pulse width modulation (PWM) signals

The invention provides a generating circuit of pulse width modulation (PWM) signals. The generating circuit comprises a PWM oscillator circuit, wherein the PWM oscillator circuit further comprises a 555 timer, a first resistor, a second resistor, a third resistor and a capacitor element; the 555 timer is provided with a plurality of pins; each pin comprises an analog signal input end, a modulating signal input end and an output signal output end; and the three resistors and the capacitor element are all externally connected with the 555 timer. A detecting method of the PWM signals generated by the generating circuit is characterized by adopting a low-pass filter or an envelope detection method to demodulate the signals. The invention has the following beneficial effects: by adopting the 555 timer to form the generating circuit of the PWM signals, not only the method is simple, the circuit is simplified and the realizability is high, but also ideal demodulation of different types and frequencies of signals can be realized by adopting the low-pass filter.
Owner:SHANGHAI DIANJI UNIV

High-load organic matter treatment device

The invention discloses a high-load organic matter treatment device. The device comprises a feeding device and a pressurizing pressure relief device, and the feeding device is installed on the upper portion of the pressurizing pressure relief device, wherein the pressurizing pressure relief device comprises an individual cylinder barrel sealing device and a pneumatic opening mechanism, the individual cylinder barrel sealing device comprises an upper cylinder barrel and a lower cylinder barrel; the lower cylinder barrel is a cylinder structure with openings on the two ends and sleeved on the outer side of the upper cylinder barrel, the upper cylinder barrel comprises a steam valve port on the bottom and discharge ports on the side, an external steam pipeline is connected with the steam valve port, the lower cylinder barrel is in sliding connection with the upper cylinder barrel, and the pneumatic opening mechanism is used for driving the lower cylinder barrel to slide up and down. By adopting the multi-direction discharging, the discharge area of gas and materials is increased and the discharging efficiency of the pressurizing pressure relief device is obviously increased. The pneumatic opening mechanism is provided with a large-caliber air inlet valve which is used for rapidly inflating an upper cavity of an air cylinder and a large-caliber exhaust valve which is used for quickly exhausting a lower cavity of the air cylinder. The exhaust caliber is increased and meanwhile the opening speed is increased.
Owner:TIANZI ENVIRONMENTAL PROTECTION EQUIP MFG TIANJIN

Omnidirectional underwater robot

The invention discloses an omnidirectional underwater robot which comprises an open-frame type robot, which comprises a frame, wherein top propellers are arranged at the four corners of the top end of the frame; a mechanical arm which is arranged at the front end of the frame; a rotating holder which is arranged in the frame, and comprises a motor fixing plate, a bearing upper fixing plate and a bearing lower fixing plate which are sequentially and fixedly connected from top to bottom, wherein a cylindrical roller bearing is fixed between the bearing upper fixing plate and the bearing lower fixing plate, and two bearing clamping inner plates are sequentially arranged on the inner edge of the cylindrical roller bearing from top to bottom; a servo motor is fixed to the motor fixing plate, a steering engine fixing plate is fixedly connected to the bottom end of the bearing clamp inner plate located at the bottom, a plurality of full-waterproof steering engines are arranged at the top end of the steering engine fixing plate, and underwater propellers are installed on the full-waterproof steering engines. The robot is high in realizability, safe and reliable in operation, high in portability, high in carrying performance, simple in structure and capable of providing reliable performance improvement and achieving the effects of energy conservation and emission reduction.
Owner:GUANGDONG OCEAN UNIVERSITY

Experiment device applied to Doppler effect and implementation system thereof

The present invention relates to the technical field of Doppler effect test experiments, and provides an experiment device applied to the Doppler effect and an implementation system thereof. A motor,a transmission gear set and a rotating rod which are arranged in the experiment device are arranged on the substrate, the rotating rod completes driving coupling with a motor rotating shaft through the transmission gear set, the rotating rod is provided with at least two fixed nodes configured to arrange at least two sound sources having preset emitting frequencies; a first sound wave collector isarranged at one side of the substrate, and the rotation planes of the first sound wave collector and the rotating rod are located in the same horizontal plane. The experiment device applied to the Doppler effect is provided with at least two sound sources with different frequencies on the same rotating rod to achieve the purpose of more efficient experiment data collection, wherein the sound sources with different frequencies can be arranged at fixed nodes with different rotating radiuses so as to ensure the quantity of valid experiment data in a cycle of rotating experiment.
Owner:贺宜琛

Method for Manufacturing All Solid-State Battery Comprising Polymeric Solid Electrolyte and All Solid-State Battery Obtained Thereby

The present disclosure relates to an all solid-state battery cell and a method for manufacturing the same. The gaps between the electrode active material particles forming the electrode active material layer are filled with a mixture of a polymeric solid electrolyte with a conductive material, and an organic solid electrolyte membrane is interposed between the positive electrode and the negative electrode. The method comprises a solvent annealing process to improve the contact between the electrode active material particles and the conductive material and to improve the contact between the electrode active material layer and the organic solid electrolyte membrane, thereby providing an all solid-state battery cell with improved ion conductivity and capacity realization.
Owner:LG ENERGY SOLUTION LTD

Control method of garment treatment device and garment treatment device

The invention discloses a control method of a garment treatment device and the garment treatment device. The garment treatment device comprises at least two heating devices, wherein the power of at least one heating device can be changed. The control method includes the steps that when one existing heating device is running and the other heating devices need to be started, if it is judged that thesum of the heating power of the running heating device and the heating devices needing to be started is larger than a rated power, the power of the heating device with the variable power is adjustedto ensure that the sum of the heating power is not larger than the rated power. According to the control method, by means of the heating device with the variable power, the multiple heating devices can simultaneously run for heating under the condition that non-overloading is guaranteed, the running safety can be guaranteed, the time for garment treatment can be saved, and the user experience is improved.
Owner:QINGDAO HAIER DRUM WASHING MACHINE

Experimental device of variable-structure rocket-based-combined-cycle combustion chamber

The invention discloses an experimental device of a variable-structure rocket-based-combined-cycle combustion chamber. The experimental device comprises a combustion chamber isolation section being ahollow shell with two open ends and a combustion chamber expansion section being a hollow shell with two open ends. The combustion chamber expansion section is encircled by a top plate assembly, a side plate and a bottom plate; and the front end of the combustion chamber expansion section is communicated with the outlet end of the combustion chamber isolation section. The top plate assembly includes a fixed plate, a translation top plate, and a rotating top plate. The front end of the fixed plate is fixedly connected with the top plate of the combustion chamber expansion section; and the fixedplate is inclined upwardly from the front to back. The front end of the translation top plate is in sliding connection with the lower surface of the front section of the fixed plate; and the translation top plate can slide back and forth along the front section of the fixed plate to change the expansion ratio of the combustion chamber. The front end of the rotating top plate is hinged to the tailof the translation top plate and a rotating shaft can be arranged at the hinged part; and the rear end of the rotating top plate can rotate in a direction away from or close to the fixed plate so asto change the geometric throat area of the combustion chamber. Therefore, the adjustment of the configuration of the combustion chamber under different incoming flow Mach number conditions can be realized; and a problem of dynamic sealing in the process of adjusting the structure of the combustion chamber is solved.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Self-compensating emergency combination seal for nuclear reactor main circulation pump sealing device

ActiveCN103711910ARealize automatic isolation in case of high temperatureStop the leakEngine sealsNuclear reactorCylinder block
The invention belongs to the field of sealing and in particular relates to a self-compensating emergency combination seal for a nuclear reactor main circulation pump sealing device which is capable of automatically starting in a high-temperature medium. The self-compensating emergency combination seal for the nuclear reactor main circulation pump sealing device comprises a heat-resisting ring, wherein the heat-resisting ring is positioned in a machine shell cylinder body, sleeved and matched with a spindle; a channel for circulation of a medium is formed in the heat-resisting ring and / or between the heat-resisting ring and one of a peripheral wall of the spindle and a cylinder wall of the cylinder body; the self-compensating emergency combination seal for the nuclear reactor main circulation pump sealing device also comprises a movable part; the movable part has two position states; when temperature of the medium is lower than a pointed temperature, the movable part is in a primary position and the channel is in a conduction state; and when the temperature of the medium reaches a set dangerous temperature, the movable acts and seal the channel. The self-compensating emergency combination seal, which is capable of automatically starting in the high-temperature medium, is capable of automatically starting when a nuclear industry system has faults and stops, so that effect of sealing is achieved; goal of effectively preventing nuclear mediums from leaking is achieved; and personal safety and property safety are protected.
Owner:HEFEI GENERAL MACHINERY RES INST

Adjustable magnetic induction electromagnetic force constant force mechanism

The invention provides an adjustable magnetic induction electromagnetic force constant force mechanism. The mechanism is composed of a base assembly, a positive rigidity assembly, a spring force measuring assembly, a magnetic induction electromagnetic force assembly, an electromagnetic force measuring assembly and an output force assembly. The base assembly is formed by fixedly connecting a base and a guide block; the positive rigid assembly is formed by sequentially installing an inner sliding block, a spring, a check block, a bolt and an adjusting bolt. The spring force measuring assembly is composed of a pressure sensor, a sensor mounting plate and a bolt, and is connected with the output force assembly and the positive rigidity assembly; the magnetic induction electromagnetic force assembly is composed of a coil, a coil fixing installation block, a south-pole magnet and a north-pole magnet which are installed in sequence. The electromagnetic force measuring assembly is formed by sequentially installing a pressure sensor, a shaft, a rectangular spring and a nut in a contact mode. The output force assembly is composed of an output tail end. The mechanism has the advantages of compact structure, more flexible large-stroke constant-force adjusting range, high reliability and the like.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
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