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52results about How to "Improve reliability index" patented technology
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Power dispatching automation method and power dispatching automation system based on 'cloud computing' dispatching application
InactiveCN104881748AImprove reliability indexReduce procurement costsResourcesTransmissionData acquisitionWorkstation
The invention relates to a power dispatching automation method and a power dispatching automation system based on a 'cloud computing' dispatching application. A dispatching application service module is deployed in a cloud server. A dispatching pre-processing unit and a historical database are deployed in a local server. Data acquired by substation RTUs is transmitted via a dispatching data network to the dispatching pre-processing unit to complete data acquisition and analysis. Real-time data is transmitted via a broadband network to the dispatching application service module and an upper dispatching module. Historical data is saved to the historical database through a local data interface. A dispatching workstation terminal issues a service request to a scheduling application, and the dispatching application service module triggers a corresponding service and deals with related affairs, and feeds a result back to the request initiator immediately after getting the result, so as to realize power dispatching automation function operation. Deployment is simple. A variety of options can be provided for dispatchers in the aspects of hardware resources, dispatching terminal equipment type and access network type, so that system hardware investment and maintenance are reduced, and the reliability of the system and the flexibility of power dispatching are improved.
Owner:GUANGXI UNIV +1
Double-unit backup redundancy control device
ActiveCN103631178AImprove reliabilityImprove real-time performanceProgramme controlComputer controlMicrocomputerState switching
The invention provides a double-unit backup redundancy control device. The double-unit backup redundancy control device comprises two identical parts which are arranged in two computers, wherein each part comprises a state acquisition module, a master / backup state setting module, a master / backup state switching module, a master / backup state clearing module and a master / backup mode generating logic module; the two computers are connected by a wire and used for collecting the power supply state and the master / backup mode state of each other. The master computer is determined by the single-chip microcomputers through a master / backup mode right contending mechanism, and an external public signal is output by the master computer. An externally input remote-control command is simultaneously received by the two computers, and the master / backup modes of the single-chip microcomputers can be switched unconditionally. The double-unit backup redundancy control device not only supports a double-unit hot backup work mode but also supports a double-unit cold backup work mode. The double-unit backup redundancy control device has the characteristics of high reliability, long service life and high real-time performance.
Owner:NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
Reliability design optimization method for avionic device
InactiveCN105677991AShorten the development cycleReduce R&D costsSpecial data processing applicationsAviationDesign information
The invention provides a reliability design optimization method for an avionic device. By means of the reliability design optimization method for the avionic device, the reliability index of the device can be practically and effectively promoted in the design stage. According to the technical scheme, the method comprises the following steps that three-dimensional digital prototype modeling is conducted according to an avionic device design scheme; on the basis of a three-dimensional digital prototype, environmental stress digital prototype modeling is conducted according to a device working load, an environmental load and design information relevant to device characteristics, and a model is corrected and verified; thermal environment stress, mechanical environment stress and the like of the avionic device are analyzed by referring to environmental conditions, environmental stress weak links of the device are searched, and corresponding avionic device design optimization is conducted; a fault physical digital prototype model is built, environmental stress analysis results are introduced to conduct device fault risk prediction, avionic device design optimization is conducted aiming at the reliability weak links occurring in the analysis process, and the reliability level of the avionic device is evaluated according to the optimized fault risk distribution situation.
Owner:10TH RES INST OF CETC
Cold backup double-machine switching circuit
ActiveCN101902069AReduce power consumptionGuarantee job securityEmergency power supply arrangementsMachine partsEngineering
The invention discloses a cold backup double-machine switching circuit, which comprises a host machine part and a backup machine part corresponding to the host machine part on circuit structure, wherein the host machine part comprises a host machine power supply circuit, a host machine switch relay and a host machine secondary power supply converter which are connected in turn; the output of the host machine secondary power supply converter is connected with the input of a host machine CPU controller and the input of a dog bite and backup electromechanical circuit respectively; the output of the host machine CPU controller is connected with a switch-off backup electromechanical circuit and is in bidirectional signal connection with a host machine cold / hot start mark circuit at the same time; and the output of the switch-off backup electromechanical circuit is connected with a host machine remote measuring switching circuit. The host machine switch relay and the backup machine switch relay are connected with direct instructions respectively, wherein the direct instructions comprise host-on backup-off instruction and backup-on host-off instruction; the output of the dog bite and backup electromechanical circuit and the output of the switch-off backup electromechanical circuit are connected with the backup machine switch relay; and the output of the dog bite and host electromechanical circuit and the output of the off host electromechanical circuit are connected with the host machine switch relay.
Owner:NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
Tri-redundancy brushless DC servo drive controller
InactiveCN104579029ARealize servo closed-loop controlImprove fault toleranceSingle motor speed/torque controlElectronic commutatorsDriver circuitMotor drive
The invention belongs to a motor drive controller, and particularly discloses a tri-redundancy brushless DC servo drive controller which comprises three servo control driver circuits, wherein the servo control driver circuits are connected in parallel, are respectively communicated with a brushless DC motor, and communicate with one another; each servo control driver circuit comprises a servo control module, a motor driver module, a current detection module and a potentiometer; the output end of each servo control module is communicated with the input end of the corresponding motor driver module; the output end of each motor driver module is communicated with a three-phase winding output end of the brushless DC motor; the input end of each current detection module is communicated with a detection signal output end of the brushless DC motor; the output end of each current detection module is communicated with the input end of the corresponding servo control module; the input end of each potentiometer is communicated with a position signal output end of the brushless DC motor; the output end of each potentiometer is communicated with the digital signal input end of the corresponding servo control module. Through the adoption of the tri-redundancy brushless DC servo drive controller, high integration and redundancy design of electromechanical servo control can be realized.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
Linear Regulator with Current-Limited Short-Circuit Protection
ActiveCN102279613AReduce volumeTo achieve the purpose of pressure regulationElectric variable regulationShort circuit protectionVoltage regulation
The invention relates to a linear voltage stabilizer with current-limiting short circuit protection. The linear voltage stabilizer comprises a starting circuit, a reference voltage circuit, a comparison amplifying circuit, a short circuit protection circuit, a current sampling circuit, a voltage sampling circuit and an adjusting pipe, wherein the starting circuit delivers the input voltage sourceinto the reference voltage circuit; the reference voltage circuit provides the adjusted reference voltage to the comparison amplifying circuit; an output end of the adjusting pipe is connected in series with the current sampling circuit; the current sampling circuit feeds back the sampled output current signal to the comparison amplifying circuit; the voltage sampling circuit feeds back the sampled output voltage signal to the comparison amplifying circuit; the comparison amplifying circuit processes the output current signal and the output voltage signal and delivers to a control end of the adjusting pipe so that the adjusting pipe works in a linear area and the aim of current limiting and voltage regulation is achieved; and the short circuit protection circuit processes the acquired output voltage signal and delivers to the control end of the adjusting pipe so that the adjusting pipe is adjusted from the linear area to a shutoff area and the aim of short circuit protection is achieved.
Owner:江苏晟楠电子科技股份有限公司
Constant-current source driver circuit and device
InactiveCN101668365AExtend your lifeHigh comprehensive benefit targetElectric light circuit arrangementDriver circuitResistance capacitance
The invention discloses a constant-current source driver circuit used for driving an LED illumination light source and an integrated current source device based on the circuit. A low-cost resistance-capacitance voltage-reduction type drive circuit is simple in structure and low in cost, but has the disadvantages of poor performance and low efficiency, and damages an LED light source device to a certain extent; a series voltage stabilization type circuit has the disadvantages of large volume, heavy weight, high heat generation, low efficiency and energy waste; and a PWM voltage-stabilizing or constant-current power supply has relatively good performance and higher efficiency, but has higher cost and an important problem of introducing EMI electromagnetic interference. The constant-current source drive circuit has the advantages of good constant-current effect, low cost, high efficiency, long service life and no EMI. The key point to achieve the advantages lies in adopting a CRD device to provide stable base current for a regulating tube so as to greatly improve the overall constant-current technical index on the premise of keeping simple structure and low cost of the constant-current circuit.
Owner:李旭明 +2
Complex power distribution network fault positioning method based on voltage sag information
ActiveCN107271852ARealize precise fault locationImprove reliability indexFault locationGrounding resistanceLoad following power plant
The invention discloses a complex power distribution network fault positioning method based on the voltage sag information. The method comprises steps that (1), the fault over-current information reported by a feeder monitoring terminal is utilized to preliminarily determine a fault section; (2), the current vector information of a fault uploaded by the feeder monitoring terminal is utilized to determine fault point short circuit current magnitude; (3), the fault point short circuit current magnitude is calculated through utilizing the voltage sag information uploaded by each monitoring point and a system node impedance matrix; and (4), traversal of each node of the system is carried out, a short circuit current offset value is calculated, and a fault node is determined. The method is advantaged in that precise fault positioning of the complex power distribution network is realized, for the actual power distribution network having relatively large-quantity branch lines and the complex structure, the positioning result is relatively accurate, influence of the branch lines can be avoided, influence of grounding resistance, a load model and fault types on the result is relatively small, shortening the fault inspection time of the power distribution network and the user power failure time is facilitated, and a reliability index of the power distribution network is improved.
Owner:广东双新电气科技有限公司 +1
Electric power unified video monitoring platform equipment fault diagnosis early warning method
InactiveCN107155089AConvenient statisticsImprove reliability indexClosed circuit television systemsVideo monitoringModel selection
The invention relates to an electric power unified video monitoring platform equipment fault diagnosis early warning method. The method comprises steps of rapid equipment fault diagnosis analysis and positioning, diagnosis fault early warning and fault data analysis. The method is advantaged in that automatic diagnosis analysis positioning of a blank screen and error code faults existing in a platform video equipment operation process can be realized, operation and maintenance personnel is facilitated to rapidly realize troubleshooting, position fault causes and solve problems, and operation and maintenance efficiency is improved. The method is advantaged in that multi-dimension analysis on the equipment fault causes, fault types, fault frequency, typical fault regions and typical fault scenes is carried out to form an equipment operation defect database, data support is provided for later video monitoring equipment model selection and network configuration standardization, operation personnel workload is effectively reduced, operation maintenance efficiency is improved, and the platform reliability index is improved.
Owner:FUSHUN POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
System and method for provisioning and managing network access and connectivity
ActiveUS20100262446A1Improve reliability indexMultiple digital computer combinationsTransmissionDemarcation pointTelecommunications network
Systems and methods for providing distributed network solutions to end user customers by acting as a neutral demarcation point between the last mile and the long haul portion of a telecommunications network. A network provisioning platform evaluates transport alternatives to identify routes and networks having the highest reliability metrics. Access circuits are aggregated to the optical level at the earliest possible point in the network. Service to on-net networks are provisioned rapidly.
Owner:PERATON INC
Memetic algorithm-based method for researching optimal configuration of switches of power distribution networks
InactiveCN106779197AImprove reliability indexImprove average power supply availabilityForecastingMemetic algorithmRemote control
The invention discloses a memetic algorithm-based method for researching optimal configuration of switches of power distribution networks. The method comprises the following steps of comprehensively considering the balance of economy and reliability by taking a minimum power supply zone as a basic analysis unit, calculating the differences between a manual switch and a remote control switch, and establishing a mathematic model for optimizing a section switch and an interconnection switch at the same time on the basis of a cost-benefit theory; importing a memetic algorithm, and combining an intelligent algorithm and a local search strategy to optimize the mounting quantity and positions of the section switch and the interconnection switch; and carrying out analysis by applying an IEEE RBTS-BUS 2 system, and the results show that load capacities at two ends of the switches need to be basically balanced and then the effectiveness of the method is verified.
Owner:HOHAI UNIV
Optical Fiber Ceramic Ferrule Tail
ActiveCN104317010BInhibit sheddingImprove reliability indexCoupling light guidesInterference fitFiber
The invention relates to the field of fiber processing, and provides a fiber ceramic insertion core tail handle for the purpose of effectively preventing fibers from falling off. The fiber ceramic insertion core tail handle disclosed by the invention comprises an optical cable with the fibers being stripped, and a ceramic insertion core and a tail seat which are connected in a sleeved mode. The optical cable with the fibers being striped is inserted into a space reserved by the ceramic insertion core and a shaft in the fiber ceramic insertion core tail handle and is fixed through casting glue. The optical fiber with the fibers being stripped, which is fixed in the tail seat, is an optical cable whose optical cable fiber skin is provided with a recess. According to the invention, through arranging the recess in the optical cable, the fiber ceramic insertion core tail handle is provided with a convex ridge as a bayonet, the tail seat is crimped with and is in interference fit with the ceramic insertion core, based on this, through glue perfusion and high-temperature solidification, at the time when a glue amount is increased, the solidified glue can form an enclosed fixation sleeve among the optical cable, the tail seat and the ceramic insertion core, and the press mark of the optical cable is reversely hooked on the solidified 353ND glue in a step form, such that when reliability tests such as high temperature and high moisture, TC, tension tests and the like are carried out, the problem that the optical cable falls off is radically prevented, and the reliability index of the optical cable is improved.
Owner:HONGYA CHUANGJIE COMM
Flyback type non-optical-coupler thick film DC/DC switching power supply
InactiveCN104362857AReduce in quantityImprove reliabilityDc-dc conversionElectric variable regulationSurface-mount technologyOptical coupler
The invention relates to the power electronic technology and the micro electronic technique and in particular relates to a flyback type non-optical-coupler thick film DC / DC switching power supply. The flyback type non-optical-coupler thick film DC / DC switching power supply comprises a copper-coated Al2O3 ceramic substrate, an SMT (surface mounting technology) device and a dual in-line type metal hermetic sealing shell, wherein the dual in-line type metal hermetic sealing shell is tin-soldered on the back surface of the copper-coated Al2O3 ceramic substrate, the SMT device is tin-soldered on the front surface of the copper-coated Al2O3 ceramic substrate, a cavity is formed inside the dual in-line type metal hermetic sealing shell and is filled with inert gas, pins are arranged on the bottom surface of the dual in-line type metal hermetic sealing shell, and a flyback type non-optical-coupler DC / DC circuit is arranged on the copper-coated Al2O3 ceramic substrate. The flyback type non-optical-coupler thick film DC / DC switching power supply overcomes the defect of high temperature life of a photoelectric coupler, the troubles of secondary magnetic isolation feedback complexity, the volume and the cost are avoided, and the flyback type non-optical-coupler thick film DC / DC switching power supply has the characteristics of simple circuit, good output characteristics, quick dynamic response, metal hermetic sealing, good heat dissipation property, and high reliability.
Owner:程信羲
User adjustable load resource demand response method and system based on virtual power plant
PendingCN114243779ARealize the access methodResolve configurationForecastingSingle network parallel feeding arrangementsControl engineeringPower grid
The invention discloses a user adjustable load resource demand response method and system based on a virtual power plant. The method comprises the following steps: collecting and obtaining a user to be investigated according to an industry attribute and an electrical load of each user; identifying a to-be-investigated user with load adjustable equipment as a user participating in power demand response, and collecting adjustable load resources of the users; establishing an adjustable load technical economic model based on marginal cost, and establishing a capacity model of the maximum adjustable load based on safety constraints; therefore, an electric power real-time demand response adjustment algorithm model is formed; and when the demand response item is started, the operation state and the adjustable load resource of the adjustable load equipment of each user are taken as input data, and the power real-time demand response adjustment algorithm model is utilized to calculate the load regulation and control index of each user and carry out load regulation and control. According to the method, the power peak load is reduced, economic and reputation loss caused by orderly power utilization of the power grid is avoided, the maximum load of equipment at the peak load is reduced, and the operation capability of the power grid is improved.
Owner:STATE GRID JIANGSU ELECTRIC POWER CO LTD MARKETING SERVICE CENT +1
Linear regulator with current limiting short circuit protection function
ActiveCN102355129AReduce volumeTo achieve the purpose of pressure regulationEmergency protective circuit arrangementsDc-dc conversionLinear regulatorLinear region
Owner:江苏晟楠电子科技股份有限公司
Server and double-link backup method thereof
ActiveCN101789855AImprove reliability indexImplement hot backupError preventionData switching networksIp addressBackup
The invention discloses a server and a double-link backup method thereof. In the method, one or more long-time online addresses are selected as reliable link addresses by the server, and double-link IP addresses supported by the server are set as a master address and a slave address; when the server arrives at preset time, a link request is initiated to a reliable link address based on the primary address, if the link succeeds, the primary address external service is bound, and a gateway correspondent to the master address is set as a default gateway; otherwise, the server initiates a connection request to a reliable link address based on the slave address, if the link succeeds, the slave address external service is bound, and a gateway correspondent to the slave address is set as a default gateway; and if the link fails, external service is not provided. The method realizes double-link hot backup of servers on Windows platform to greatly improve reliability index of servers.
Owner:BEIJING TOPSEC TECH
Weak link identification method for power distribution network
ActiveCN107453354AGuaranteed accuracyImprove satisfactionAc network circuit arrangementsTransformerNetwork structure
The invention discloses a weak link identification method for a power distribution network. The method comprises the following steps of (1) building a topology model of the power distribution network, forming a topology diagram of the power distribution network according to an actual connection diagram of the power distribution network and generating a main transformer capacity matrix, a tie line connection relationship matrix and a tie line capacity matrix; (2) calculating the power supply capacity of the power distribution network by using existing information of the power distribution network, comparing with the actual operation condition and troubleshooting weak links; and (3) traversing a topology of the power distribution network and troubleshooting all weak links; and (4) comprehensively judging all possible weak links to form a weak link set. The weak links of a transformer and a tie line of the power distribution network are accurately judged by virtue of the transformer capacity, the tie line transmission capacity limitation and the network structure topology connection relationship of the power distribution network, occurrence and consequence of a fault are accurately pre-judged, and identification of the weak links of the power distribution network and shortening of the maintenance time of the power distribution network and the customer interrupt time are facilitated.
Owner:HUANAN IND TECH RES INST OF ZHEJIANG UNIV
Real-time operation state information collection and fault rapid diagnosis method based on cloud computing
InactiveCN108459231AIncrease work intensityImprove reliabilityElectrical testingData acquisitionElectric power
The present invention provides a real-time operation state information collection and fault rapid diagnosis method based on cloud computing, belonging to the technical field of electric devices. A real-time operation state information collection and fault rapid diagnosis device based on cloud computing is provided. The device comprises a plurality of current sensing modules arranged on a power transmission line, a monitoring background server in wireless signal interconnection with the current sensing modules, a cloud computing module, a database, a grounding identification block and a fault recorder which are in signal interconnection with the monitoring background server, and an intelligent mobile terminal being in signal interconnection with the monitoring background server; a mode of big data collection and comparison is employed to obtain current values of the current sensing modules in the single line in a short time, intelligent comparison is performed to determine the concreteinterval range of lines with faults and perform identification, and maintenance staff directly carry tools to perform maintenance so as to greatly shorten the maintenance difficulty and the maintenance time.
Owner:LUOHE POWER SUPPLY OF HENAN ELECTRIC POWER CORP
Dynamic regulation method of axial force in multistage centrifugal pump with balance disc to balance axial force
InactiveCN1811199AImprove reliability indexImprove efficiencyPump componentsRadial flow pumpsDynamic balanceAxial force
The present invention relates to method of regulating the axial force of multi-stage centrifugal pump, and is especially method of regulating multi-stage centrifugal pump with balance disc to balance axial force dynamically and in varying axial force. When some axial force increment from the wear of sealing intervals appears in running multi-stage pump, the flow rate of the throttle mechanism in the regulating device is regulated, so that the pressure inside the balance chamber is lowered, the balance force of the balance disc is increased and the increment in axial force is counteracted timely and properly to prolong the MTBF and the average life of the pump. The present invention has simple structure and reasonable design, and is suitable for various kinds of multi-stage centrifugal pump, volute one and guide vane one, horizontal one and vertical one.
Owner:陆雄
A wireless data transmission method and system
InactiveCN109861800AFlexible configurationImprove reliability indexError preventionTransmission path multiple useComputer hardwareSystems design
The invention provides a wireless data transmission method, which comprises the following steps of: copying service data to be sent to obtain at least two pieces of service data; Respectively sendingthe at least two pieces of service data through M transmission channels; And enabling the receiving end to receive the sent data in the N channels and recover the original service data, wherein N is an integer greater than 2. The invention also provides a corresponding wireless data transmission system. According to the method, the system design difficulty supporting high reliability and low timedelay is solved, the reliability index of the service is improved through flexible system frame structure design, flexible frame configuration and multi-channel transmission strategy combination.
Owner:NUFRONT MOBILE COMM TECH
Cylindrical roller bearing retainer and processing method
InactiveCN109372890AImprove reliability indexSolve crackingBearing componentsStress concentrationEngineering
The invention relates to a cylindrical roller bearing retainer and relates to the field of bearing processing. In order to solve the problem that a pocket of an existing bearing retainer in a using process is worn and broken, the device comprises a body and a cross beam. A stress buffer slot which is a 2 / 3 to 3 / 4 circle is processed in a transitional position of the body and the cross beam. N Oiltanks are processed in the cross beam. The oil tanks are semicircles which are sunken along the radial direction of the cross beam. N is a positive integer. By adopting the device, a phenomenon of stress concentration can be avoided, the shock resistance of the retainer is improved greatly, and the problems of cracks and raptures at the corners of the pocket can be solved. The using reliably and safety of a product bearing are guaranteed as a result of the structural design and the dimensional precision control of the pocket of the retainer. The reliability index of the bearing can be improvedto 1.3 times. The device can be widely applied to the field of bearing processing.
Owner:AVIC HARBIN BEARING
Structure capable of improving stability of underwater vehicle floating bag safety valve
InactiveCN109114267AImprove reliabilityImprove securityEqualizing valvesSafety valvesEngineeringSafety valve
The invention relates to a structure capable of improving stability of an underwater vehicle floating bag safety valve. The structure comprises a valve body, a valve rod and a guide sleeve. The valvebody is in a cylinder shape, one end of the outer surface of the cylinder is provided with a mounting thread, and the other end of the outer surface of the cylinder is provided with a sealing-fit face. Four guide rails are designed in the valve body and are each in a cross shape. The height of the guide rails is larger than the maximum distance of the valve rod moving in the safety valve, and thefit dimension tolerance of the guide rails and the valve rod is H9. The valve rod is in a stepped cylinder shape, in order to ensure that the valve rod is not clamped into the guide rails of the valvebody 1, the height of the fit cylindrical section of the valve rod and the guide rails is larger than one half of the height of the guide rails, and the fit tolerance is c9. The mandrel diameter of mounting springs of the valve rod is smaller than the inner diameter of springs by 0.1 mm, and the deviation of the directions between elastic force of the springs and force, acting on the valve rod, of gas is reduced. The diameter of guide holes in the guide sleeve is larger than the diameter of a thin shaft of the valve rod by 3 mm, and it is ensured that the valve rod does not collide with the guide holes during moving; and meanwhile, the mandrel inner diameter of the mounting springs is smaller than the inner diameter of the springs by 0.6 mm, and thus the problems that due to assembly errors, mandrels of the mounting springs of the valve rod and the guide sleeve are not coaxial, thus the springs deviate, and performance of the safety valve is influenced are solved.
Owner:中国船舶重工集团公司第七0五研究所
Control level management method for ultra-large ship power station
ActiveCN104571035AImprove reliability indexFlexible controlCircuit arrangementsProgramme total factory controlControl levelPower station
The invention provides a controller management method for a ship power station. The ship power station is internally provided with a plurality of power stations, wherein each power station is provided with one or more sets. The monitoring method is characterized by comprising the steps of configuring a set controller for each set, configuring a regional controller for each power station for controlling one or more sets and the corresponding set controllers of the power station, presetting a priority level for each regional manager, forming the sets in each region into a power supply echelon when the power stations operate, and controlling the power supply echelons according to the priority levels of the regional managers, wherein the priority levels of the regional managers are different. The management method puts forward distributed multilevel control system architecture design and multi-controller authority management for the first time and has a higher reliability index than the conventional power station monitoring system.
Owner:中国船舶重工集团公司第七0四研究所
Fiber ceramic insertion core tail handle
ActiveCN104317010AInhibit sheddingImprove reliability indexCoupling light guidesInterference fitFiber
The invention relates to the field of fiber processing, and provides a fiber ceramic insertion core tail handle for the purpose of effectively preventing fibers from falling off. The fiber ceramic insertion core tail handle disclosed by the invention comprises an optical cable with the fibers being stripped, and a ceramic insertion core and a tail seat which are connected in a sleeved mode. The optical cable with the fibers being striped is inserted into a space reserved by the ceramic insertion core and a shaft in the fiber ceramic insertion core tail handle and is fixed through casting glue. The optical fiber with the fibers being stripped, which is fixed in the tail seat, is an optical cable whose optical cable fiber skin is provided with a recess. According to the invention, through arranging the recess in the optical cable, the fiber ceramic insertion core tail handle is provided with a convex ridge as a bayonet, the tail seat is crimped with and is in interference fit with the ceramic insertion core, based on this, through glue perfusion and high-temperature solidification, at the time when a glue amount is increased, the solidified glue can form an enclosed fixation sleeve among the optical cable, the tail seat and the ceramic insertion core, and the press mark of the optical cable is reversely hooked on the solidified 353ND glue in a step form, such that when reliability tests such as high temperature and high moisture, TC, tension tests and the like are carried out, the problem that the optical cable falls off is radically prevented, and the reliability index of the optical cable is improved.
Owner:HONGYA CHUANGJIE COMM
Zero leakage hydraulic lock
The invention relates to a zero leakage hydraulic lock which comprises a valve body, a left end cover, a right end cover, a left spring, a left movable door, a left valve base, a right spring, a right moveable door, a right valve base and a sliding valve element, wherein an oil port A, an oil port A1, an oil port B and an oil port B1 are arranged on the valve body; a first soft sealing ring is arranged on the left movable door; a first penetrating hole and a first annular platform are arranged on the left valve base; the first annular platform is pressed on the first soft sealing ring; a second soft sealing ring is arranged on the right moveable door; a second penetrating hole and a second annular platform are arranged on the right valve base; the second annular platform is pressed on the second soft sealing ring; a left jacking rod of the sliding valve element is opposite to the left movable door; a right jacking rod of the sliding valve element is opposite to the right moveable door; the oil port A is communicated with the right end of the first penetrating hole; the oil port A1 is communicated with the left end of the first penetrating hole when the first soft sealing ring is separated from the first annular platform; the oil port B is communicated with the left end of the second penetrating hole; and the oil port B1 is communicated with the right end of the second penetrating hole when the second soft sealing ring is separated from the second annular platform. The zero leakage hydraulic lock has the advantages of excellent sealing property and high reliability.
Owner:BEIJING INST OF SPACE LAUNCH TECH +1
High-online-rate open-type cement kiln intelligent optimization expert system
PendingCN110262224AImprove reliabilityLess chance of crust cloggingControl devices for furnacesAdaptive controlDual loop controlCement kiln
The invention discloses a high-online-rate open-type cement kiln intelligent optimization expert system, which comprises an expert control system server running on an upper computer server, wherein the expert control system server is in bidirectional communication with a DCS control system by means of a switch through adopting an OPC communication protocol; all control points adopt dual-loop control; the expert control system server comprises a model prediction control kit, a neural network kit, a fuzzy control kit, an optimization technical kit, a soft measurement technical kit and an adaptive functional kit; a kiln tail high-temperature flue gas online analysis system, a kiln head burning zone temperature measurement analysis system and an inclined-zipper clinker intelligent infrared temperature measurement system are additionally arranged on a cement rotary kiln system; acquired signals are transmitted to the DCS control system; and a raw material preparation system is equipped with a neutron cross line analyzer in a matched mode. The high-online-rate open-type cement kiln intelligent optimization expert system fundamentally solves the influence of human factors on the operation of the cement kiln, significantly improves the reliability of thermal equipment of the kiln system, and greatly reduces the probability of crust blocking of a preheater and a decomposing furnace system.
Owner:漳县祁连山水泥有限公司
Triplex redundancy whole electric braking actuation system
ActiveCN109305339AMeet the full power output requirementImprove reliability indexBraking action transmissionAircraft brake actuating mechanismsCircular discElectricity
The invention provides a triplex redundancy whole electric braking actuation system, and relates to the technical field of aircraft parking. The triplex redundancy whole electric braking actuation system comprises three actuators, an actuating bracket, a brake disc assembly and an airplane wheel; the airplane wheel is of a cylindrical structure vertically arranged; the brake disc assembly is fixedly mounted at the axial top end of the airplane wheel; the actuating bracket is of a disc structure; the actuating bracket is horizontally and coaxially placed on the upper surface of the brake disc assembly; the three actuators are fixedly mounted on the upper surface of the actuating bracket; the three actuators are uniformly and annularly distributed taking the axis of the actuating bracket asthe center of a circle; the distance from the center of the actuators to the axis of the actuating bracket is 83-87mm; and the two adjacent actuators take the axis of the actuating bracket as the center of the circle, and an angle of the two adjacent actuators is 120 degrees. According to the triplex redundancy whole electric braking actuation system, high-reliability braking schemes with small volume and light weight are provided for a whole electric airplane / a heavy truck and the like.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
Cold backup double-machine switching circuit
ActiveCN101902069BReduce power consumptionGuarantee job securityEmergency power supply arrangementsMachine partsBackup
The invention discloses a cold backup double-machine switching circuit, which comprises a host machine part and a backup machine part corresponding to the host machine part on circuit structure, wherein the host machine part comprises a host machine power supply circuit, a host machine switch relay and a host machine secondary power supply converter which are connected in turn; the output of the host machine secondary power supply converter is connected with the input of a host machine CPU controller and the input of a dog bite and backup electromechanical circuit respectively; the output of the host machine CPU controller is connected with a switch-off backup electromechanical circuit and is in bidirectional signal connection with a host machine cold / hot start mark circuit at the same time; and the output of the switch-off backup electromechanical circuit is connected with a host machine remote measuring switching circuit. The host machine switch relay and the backup machine switch relay are connected with direct instructions respectively, wherein the direct instructions comprise host-on backup-off instruction and backup-on host-off instruction; the output of the dog bite and backup electromechanical circuit and the output of the switch-off backup electromechanical circuit are connected with the backup machine switch relay; and the output of the dog bite and host electromechanical circuit and the output of the off host electromechanical circuit are connected with the host machine switch relay.
Owner:NO 771 INST OF NO 9 RES INST CHINA AEROSPACE SCI & TECH
System and method for provisioning and managing network access and connectivity
ActiveUS9363160B2Improve reliability indexMultiple digital computer combinationsData switching networksDemarcation pointTelecommunications network
Owner:PERATON INC
A three-redundancy all-electric brake actuation system
ActiveCN109305339BMeet the full power output requirementImprove reliability indexBraking action transmissionAircraft brake actuating mechanismsCircular discBrake
A three-redundancy all-electric brake actuation system, which relates to the technical field of aircraft parking; includes three actuators, an actuation bracket, a brake disc assembly and a wheel; wherein, the wheel is a vertical cylindrical structure; The brake disc assembly is fixedly installed on the axial top of the wheel; the actuating bracket is a disc structure; the actuating bracket is placed horizontally and coaxially on the upper surface of the brake disc assembly; three actuators are fixedly installed on the upper surface of the actuating bracket ;The 3 actuators are evenly distributed in a ring with the axis of the actuating bracket as the center; the distance between the center of the actuator and the axis of the actuating bracket is 83‑87mm; the two adjacent actuators take the axis of the actuating bracket as the center of the circle The included angle is 120°; the present invention realizes a small-sized, light-weight and highly reliable braking solution for all-electric aircraft / heavy-duty trucks.
Owner:BEIJING RES INST OF PRECISE MECHATRONICS CONTROLS +1
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