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55 results about "Corrective maintenance" patented technology
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Corrective maintenance is a maintenance task performed to identify, isolate, and rectify a fault so that the failed equipment, machine, or system can be restored to an operational condition within the tolerances or limits established for in-service operations.
Terminal with corrective maintenance in accordance with selected mode
InactiveUS6868510B1Easy to handleHardware monitoringNon-redundant fault processingNormal modeEngineering
The terminal deals effectively with an error occurrence in accordance with a selected one of modes that comprise a normal mode and a debug mode. The terminal comprises a mode information holder, an error detector, a mode judge unit and a initializer. The mode information holder holds mode information that indicates which mode is the selected mode. For example, the holding of the mode information is carried out ahead of supplying power to the terminal. When an error occurs in the terminal, the error detector detects the error. Then the mode judge unit judges which mode is the selected mode, by referring to the mode information so as to produce an initialization request if the normal mode is the selected mode. The initializer initializes the terminal in response to the initialization request. On the other hand, the mode judge unit does not produce the initialization request if the debug mode is the selected mode. Accordingly, the initializer does not initialize the terminal so that the terminal continues to malfunction from the error.
Owner:NEC CORP
Method to analyze economics of asset management solutions for nuclear steam generators
ActiveUS20090292574A1Accurate analysisMaintain validityNuclear monitoringForecastingModel parametersAnalysis method
A method to determine corrective actions of a nuclear steam generator, having the steps of modeling of steam generator tube and deposit heat transfer characteristics by analytically deriving specific deposit characteristics and descriptive model parameters, wherein the modeling uses historical thermodynamic data for an operating plant under evaluation, identifying a set of one of preventive and corrective maintenance alternatives to accomplish steam generator deposit objectives, determining through the modeling a power production impact of each of the set of one of preventative and corrective maintenance alternatives to determine an economic cost for each of the set of preventative and corrective maintenance alternatives, and initiating a maintenance alternative with a lowest economic cost as compared to the maintenance evaluation alternatives with higher economic costs.
Owner:AREVA NP INC
Wind power plant power external characteristic modeling method
ActiveCN103605912AHigh precisionExtension of timeSpecial data processing applicationsICT adaptationTime delaysEngineering
The invention discloses a wind power plant power external characteristic modeling method. The method comprises the following steps of based on average wind velocity obtained by a wind measuring tower in a wind power plant region, in consideration of fan arrangement and wind direction, calculating average input wind speed at hub height of each fan in the wind power plant through a wake model, and building wind speed spatial distribution in the wind power plant; in consideration of own paddle rotary sampling of fan and fan inertia, converting the average wind speed at the hub height into an equivalent wind speed time sequence at a rotating shaft; in consideration of spatial transmission of wind speed, calculating time delay of wind speed from an upstream set to a downstream set, obtaining equivalent wind speed time sequence based on consideration of time delay, and building a complete wind power plant wind speed spatial-temporal distribution; and in consideration of conditions of pitch angle, yaw angle and fan corrective maintenance, calculating wind power output based on consideration of wind power plant control and operating state. Feasibility and reasonability of the provided method are verified by a simulation example on the basis of geographic data and fan parameters of a certain actual wind power plant. The modeling method has good promotional value and application prospect.
Owner:WUHAN UNIV
Predictive analysis method for improving and expediting realization of system safety, availability and cost performance increases
InactiveUS20110066898A1Improve availabilityImprove securityReliability/availability analysisLogistics managementAnalysis method
Predictive analysis systems and methods use and correlate data from historic events to identify trends and develop corrective maintenance and logistics actions in various technology areas, such as the transportation industry, the manufacturing industry, or any other suitable industry that experiences equipment failure. The predictive analysis method and also determines the adequacy and compliance of the requirements prior to the failure of a system in order to preemptively minimize and eliminate these negative outcomes. Current failure trends may be evaluated for one or several components of a given system, which may be the frequency of incidence of failure of one or more components of the system. Engineering instructions for repair may also be evaluated when a failure of one or more components of the system has taken place. On the basis of this information, future failure trends may be forecast and supply channels and maintenance and repair protocols may be updated in order to decrease component failure.
Owner:KIHO MILITARY ACQUISITION CONSULTING
Cable line fault positioning method, device and system
ActiveCN104502807AImprove efficiencyGuaranteed uptimeFault locationInformation technology support systemPower flowPower grid
The invention relates to a cable line fault positioning method. The cable line fault positioning method comprises the following steps of (1) setting an overflow threshold valve for line zero sequence current of every section of a cable, setting a inductance coefficient for sheath grounding current of every section of the cable and measuring the line zero sequence current and the sheath grounding current of every section of the cable; (2) judging fault positions, judging the section of the cable to be faulted when the line zero sequence current of the section of the cable is larger than the set overcurrent threshold value and judging the sheath grounding current of the section of the cable is larger than a product of the sensing coefficient and the line zero sequence current of the section of the cable. The invention also relates to a cable line fault positioning device and system applying the above method. According to the device and the system in combination with the method, the fault position of the cable line can be rapidly and accurately positioned, the fault corrective maintenance efficiency can be improved, and safe and reliable operation of the power grid is guaranteed.
Owner:STATE GRID CORP OF CHINA +3
Task reliability state-based manufacturing system predictive maintenance method
InactiveCN106127358AImprove targetingImprove scienceForecastingManufacturing computing systemsTask demandPredictive maintenance
A task reliability state-based manufacturing system predictive maintenance method is disclosed and comprises the following steps: in a first step, a manufacturing system underlying database is built; in a second step, device performance variation trends and all relevant parameters are analyzed via use of underlying data; in a third step, corrective maintenance cost of a device is predicted; in a fourth step, planned maintenance cost of the device is predicted; in a fifth step, processing capability loss cost of the device is predicted; in a sixth step, indirect loss cost of the device is predicted; in a seventh step, product quality loss cost of the device is predicted; in an eighth step, comprehensive cost is predicted, a task reliability threshold value of the device is determined, and an optimal predictive maintenance strategy is further determined; in a ninth step, task demand of the last device is determined according to a result of the eighth step, and the second step to the eighth step are repeated till a predictive maintenance strategy of a whole manufacturing system is made; in a tenth step, via the above steps, an aim of combining device performance conditions with production tasks is attained, and problems of conventional neglect of production states and blind periodic maintenance can be solved.
Owner:BEIHANG UNIV
Method for using aerated plastics to manufacture doubling plate ship
The invention relates to a method to manufacture double-plate ships with foam plastic. The invention is characterized in that the method comprises the following steps: a twisted steel plate is used between an outside plate and an inside plate of the manufactured double-plate ship; the rust on the horizontal and vertical framework steel plates is removed by adopting the technology of sandblast and so on; adhesive is applied; aged pre-foamed polystyrene grains are filled, and are heated and expanded with high pressure heating steam so as to foam the grains. After the grains are cold, the foam is bonded with and is integrated with a steel structure between the outside plate and the inside plate. After the ship is smashed or strikes aground, the foam plastic inside the outside plate and the inside plate form buffering; the inside plate of the ship is not staved easily; and even if the outside plate is staved in, no water leaks. The invention has the advantages of high sailing safety coefficient of the ship, long service life and convenient corrective maintenance.
Owner:SHANGHAI HAIMA HALOBIOS TECH DEV
Active pitch control system of wind driven generator with special working condition processing logic
ActiveCN101975142AReduce Logical ComplexityImprove securityWind motor controlMachines/enginesWind drivenControl system
The invention relates to an active pitch control system of a wind driven generator, which realizes special working condition processing logic in a motor driver at the bottom layer of the active pitch control system and direct control on a blade angle. For various special working conditions possibly occurring in the site operation of the wind driven generator, a series of motion measures are adopted in the active pitch control system to ensure safety shut-down, corrective maintenance and normal power generation production of the wind driven generator. The active pitch control system of the wind driven generator with special working condition processing logic has the advantages of reliable safety and remarkable economic benefit.
Owner:GUAN HUADIAN TIANREN CONTROL EQUIP CO LTD
Thermal resistor fault diagnosis device and method
ActiveCN106644170ARealize the diagnosis functionThermometer testing/calibrationElectrical resistance and conductanceComputer terminal
The invention discloses a thermal resistor fault diagnosis device and method. The thermal resistor fault diagnosis device comprises a thermal resistance tester and a portable mobile terminal, wherein the thermal resistor tester is connected with the portable mobile terminal through a USB data line; and the thermal resistor tester is connected to an RTD sensor of a tested thermal resistor through a signal line. By adopting a thermal resistor circuit step current response time method, a traditional temperature probe diagnosis function can be achieved, diagnosis information can be provided for an installation environment heat conduction change of a probe, the installation position condition of a temperature probe and the aging trend of the temperature probe, and a reasonable and effective suggestion can be provided for preventative maintenance and corrective maintenance of the temperature probe.
Owner:FUJIAN NINGDE NUCLEAR POWER +1
Speed driven method for calculating torque, power and energy efficiency in the control, health assessment and maintenance of rotating equipment and turbo machinery
ActiveUS10690556B1Increase speedIncrease frictionWork measurementEmergency protection detectionHealth indexMachine
Method for measuring torque in rotating-equipment, turbo-machinery, pumps, turbines, and compressors. The measured torque can be used as an input to control torque, power, or energy efficiency. The method can also measure force (or torque) in traversing-machinery or vehicles such as automobiles, ships, aircraft, bicycles and motorcycles. The method takes real-time rotating (or linear) speed measurements, applies the discrete form of equations of motion, captures the natural decay curve(s) of the machine to estimate the torque (or force) associated with the losses of the power sink, and then solves for the driving torque of the power source. The method relates to monitoring and control systems used to safely and efficiently operate rotating-equipment and traversing-machinery. The method can be used to determine a health index of a machine to make predictive and corrective maintenance, reliability, performance, safety, and efficiency-related decisions. It is accurate, robust, lightweight, space-saving, and low cost.
Owner:QUINTANA MAURICIO F
Nuclear power station main transformer service life management strategy optimization method based on genetic algorithm
The invention relates to a nuclear power station main transformer service life management strategy optimization method based on a genetic algorithm. The method comprises the following steps of (1) dividing failure events of a main transformer into a plurality of classes; (2) selecting double-parameter Weibull distribution to serve as a failure disjunction distribution model, obtaining double parameters through a maximum likelihood estimation method, and according to service life distribution of describing parts of a nonhomogeneous poisson process used by the double parameters, obtaining a failure efficiency function of the parts; (3) according to classification and the failure efficiency function of the parts, obtaining annual failure frequency of a failure accident in each type; (4) according to the annual failure frequency of the failure accident in each type and a service life management strategy, calculating preventability maintenance cost, corrective maintenance cost and capacity loss cost; and (5) using the genetic algorithm to conduct optimal calculating on a service life management strategy meeting the condition, and obtaining a service life management strategy with optimal cost. The method can find out the most suitable service life management strategy for the main transformer and other parts, and enables the main transformer to achieve cost minimization in the service life.
Owner:SUZHOU NUCLEAR POWER RES INST +1
Method and system for providing problem identification and trouble-shooting services
Owner:SIEMENS AG
Electric power device wireless temperature measurement system
InactiveCN105444903AStable jobExtended service lifeThermometer detailsThermometer applicationsElectric power transmissionEngineering
Owner:青岛苏诺物联科技有限公司
Power transformer state evaluation method and system based on electriferous detection
ActiveCN104316803AIntuitive evaluationSimplify the evaluation processElectrical testingEvaluation resultTransformer
The invention provides a power transformer state evaluation method and system based on electriferous detection. The method comprises the steps that real-time state quantity data of a transformer to be evaluated are obtained; an established evaluation model is used for evaluating the real-time quantity data to obtain a state evaluation result of the transformer to be evaluated, wherein the evaluation model is established according to the initial state quantity of the transformer to be evaluated. According to the evaluation method, the evaluation model which is established in advance is used for accurately reflecting features and attributes of the transformer, the transformer can be overhauled according to the obtained state evaluation result in a targeted mode, preventive measures are taken, thus, the problems that in the prior art, manpower and material resources are wasted and operation and the available rate of a transformer are affected due to the fact that schedule maintenance and corrective maintenance are conducted on the power transformer are solved; moreover, the evaluation process is visual, simple and easy to grasp, and high practicability is achieved.
Owner:STATE GRID CORP OF CHINA +1
Early warning system and early warning method of marine nuclear power platform
InactiveCN108961696AImprove reliabilityImprove economyParticular environment based servicesNetwork topologiesEarly warning systemNuclear power
The invention discloses an early warning system and an early warning method of a marine nuclear power platform. The early warning system comprises a sensing network subsystem, a data storage subsystemand an early warning analysis subsystem, wherein the sensing network subsystem is used for acquiring and transmitting a real-time operation parameter of target equipment of the nuclear power platform. The data storage subsystem is used for storing the real-time operation parameter in a distributed manner. The early warning analysis subsystem is used for comparing the real-time operation parameterof the target equipment with a preset first-order threshold, determines whether the target equipment is in normal operation and displays an early warning result. The early warning system and the early warning method have advantages of realizing advanced precise positioning of a target equipment fault of the marine nuclear power platform, improving reliability of the nuclear power platform, overcoming blindness and excessive maintenance in periodical maintenance, reducing maintenance time and maintenance workload, and improving economic performance of the marine nuclear power platform. Furthermore the early warning system and the early warning method overcome defects of low pertinency and low efficiency in corrective maintenance and preventive maintenance of an existing nuclear power device.
Owner:NO 719 RES INST CHINA SHIPBUILDING IND
Method to analyze economics of asset management solutions for nuclear steam generators
ActiveUS7637653B2Accurate analysisMaintain validityNuclear monitoringForecastingModel parametersAnalysis method
A method to determine corrective actions of a nuclear steam generator, having the steps of modeling of steam generator tube and deposit heat transfer characteristics by analytically deriving specific deposit characteristics and descriptive model parameters, wherein the modeling uses historical thermodynamic data for an operating plant under evaluation, identifying a set of one of preventive and corrective maintenance alternatives to accomplish steam generator deposit objectives, determining through the modeling a power production impact of each of the set of one of preventative and corrective maintenance alternatives to determine an economic cost for each of the set of preventative and corrective maintenance alternatives, and initiating a maintenance alternative with a lowest economic cost as compared to the maintenance evaluation alternatives with higher economic costs.
Owner:AREVA NP INC
Processing method of running state signal of arrester
ActiveCN105548739AReduce noise interferenceImprove effectivenessElectrical testingFast Fourier transformComputer science
The present invention provides a processing method of a running state signal of an arrester, relates to the power system signal processing technology, and especially relates to the signal processing technology based on the running state on-line monitoring of a transformer substation arrester. On the basis of signal processing algorithms of filtering, Fast Fourier Transform, Hilbert-Huang Transform and hanning window correction, the processing method provided by the invention comprises numerical filter, Fourier Transform, hanning window correction and Hilbert-Huang Transform. Through analysis of on-line monitoring data of arrester running state, the validity and the visualizability of the arrest running state data analysis result are improved, and a good analysis means is provided for corrective maintenance and on-line monitoring of the arrester.
Owner:SUQIAN POWER SUPPLY COMPANY OF JIANGSU PROVINCE POWER +4
Real-time video monitoring system for ultra-high voltage converter station
InactiveCN102932636AFlexible installation positionPrevent affecting operationClosed circuit television systemsStands/trestlesElectricityTransceiver
The invention relates to a CCTV image monitoring system for an ultra-high voltage direct current converter station, and solves the problem of poor observation effect caused by the installation height and angle of a camera head relative to a disconnecting link and a contact terminal of an earthing knife. The monitoring system comprises a monitor background and the camera head, wherein the monitor background and the camera head are in communication connection through an optical transceiver; the camera head is a infrared adjustable pick-up camera with a holder; a wiper is arranged on a spherical cover of the holder; the infrared adjustable pick-up camera is fixed at the top of a remotely-controlled lifter; the lifter is connected with a driving device; a remotely-controlled infrared lamp is further arranged at the top of the lifter; and the holder, the driving device and the remotely-controlled infrared lamp are correspondingly electrically connected with a power supply respectively, and are correspondingly in communication connection with the monitor background respectively. According to the system, the height and the angle of the observation camera head can be adjusted at any time as required in observation; when dirt accumulation of the camera head is serious, dirt cleaning up of the camera head can be carried out at any time; and when the camera head failures to work, the lifter is descended to a safe height to perform corrective maintenance on the camera head without the constraint of a device being charged in a direct current field.
Owner:GUANGZHOU BUREAU CSG EHV POWER TRANSMISSION
Method and system for providing problem identification and trouble-shooting services
InactiveUS20050033491A1Vehicle testingDigital data processing detailsThird partyProblem identification
In a complex plant most of the problems or errors will occur only once. Therefore corrective maintenance and trouble-shooting staff can not go back or hark back to ready-made solutions for these problems or errors. The present invention provides a method and a computerized system which enables the corrective maintenance and trouble-shooting staff having access to experiences made on third party plants regarding these problems or errors.
Owner:SIEMENS AG
Railway coach suspension spring matching method
InactiveCN1730333AGuaranteed carrying capacityGuaranteed damping effectBogie-underframe connectionsRailway passenger carHardness
The invention relates to suspended mechanical spring in railway carriages for passenger, concrete relates to option processes for suspended mechanical spring in railway carriages for passenger. The invention solves the problem of difficulty in Making sure that carriages for passenger primary pass the test because of lacking of option processes for standard axle box mechanical spring and bolster mechanical spring when carriages for passenger in maintenance. Weighting the body of the carriages for passenger, Gauging partition of load of the four supporting place in the body carriages for passenger, and Ascertaining the heavy end the light end and the heavy side, the light side of the heavy end and the light end according to the partition of load of the four supporting place; gauging the free height and hardness of the vehicle-mounted axle box mechanical spring and bolster mechanical spring, Ordering the axle box mechanical spring and bolster mechanical spring in order of large to small of the product of the free height and the hardness of the mechanical springs; and then optioning in the order of heavy end to light end, heavy side to light side. The invention can reduce the workload of corrective maintenance, improve the success rate of maintenance, essentially make >primary pass the test, and improve maintenance efficiency and quality.
Owner:TAIYUAN RAILWAY RES INST OF SCI & TECH
A construction technology of a snow melting and anti-condensation ice thin layer cover
InactiveCN109082969ADoes not affect mixing timeNo pollution in the processIn situ pavingsPaving detailsSnow meltingRoad surface
The invention relates to a construction technology of snow melting and anti-coagulation ice sheet covering, which comprises the following steps: (1) the original pavement disease treatment; (2) construction of sticky oil spraying; (3) the first layer has the function of water-proof and adhesion, and the snow melting and anti-freezing ice micro-surface cover construction; (4) the second layer has the function of anti-skid, and the snow melting and anti-freezing ice micro-surface cover construction; The process is mainly used for preventive maintenance of high-grade asphalt or cement pavement and corrective maintenance of slight diseases, and has the function of snow melting and anti-freezing in winter.
Owner:HENAN ZENGDA HIGHWAY MAINTENANCE MANAGEMENT CO LTD
Compose stave flooring, production method thereof, and corrective maintenance of same
Example embodiments relate to improvements to composed stave flooring, methods for the production thereof and the corrective maintenance of same. The improvements allow corrective maintenance to be performed without negatively affecting the physical aesthetic and functional properties thereof. The flooring comprises a sight substrate and a base substrate, with the sight substrate having a minimum practical thickness of 4 mm and the base substrate having a minimum practical thickness of 12 mm, the two substrates being assembled using adhesive and securing means that distribute the adhesive uniformly between both substrates, thereby rendering the flooring more durable and stable.
Owner:PEREZ ROBERTO ORTEGA
Maintenance cost evaluation method, computer equipment and storage medium
InactiveCN109583754AMake up for the one-sided problem of cost evaluation resultsReliable quantitative decision-making basisResourcesCost evaluationComputer equipment
The invention discloses a maintenance cost evaluation method, computer equipment and a storage medium. Through the maintenance cost evaluation method provided by the invention, the overall maintenancecost of the equipment can be accurately calculated, and the calculated overall maintenance cost comprises the overall cost of historical maintenance of the equipment, the overall cost of future preventive maintenance of the equipment and the overall cost of future corrective maintenance of the equipment. The problem that the cost evaluation result is one-sided due to simple statistics generally based on historical input data is solved, the total maintenance cost of the whole life cycle of the equipment can be obtained more accurately, and a more reliable quantitative decision-making basis inthe aspect of cost is provided for maintenance optimization.
Owner:SUZHOU NUCLEAR POWER RES INST +2
Improved soaking type vertical pump structure
InactiveCN102235370AReduce coverage rateSimple structurePump componentsPump installationsPositive pressureEngineering
The invention relates to an improved soaking type vertical pump structure which comprises a positive pressure exhaust shaft seal device, a pumping connection group, an outlet pipe fixing group and the like, wherein the positive pressure exhaust shaft seal device is installed in a support tube accommodating chamber and on the upper end of an axle center and can be used for isolating and reducing the crystallization generated through the liquid vapour molecule depositing and the surface cover ratio, prolonging the time history of the periodic corrective maintenance is prolonged and reducing the times of replacing shaft seal parts; and the pump connection group is installed above the support tube and used for connecting with a support plate, and can be rapidly dismounted so as to increase the convenience of the maintenance service, and the outlet pipe fixing group is also used for improving the removable convenience of a pump during maintenance. The improved soaking type vertical pump structure provided by the invention has the advantages of reducing the crystallization generation ratio and the damage to a motor axis shaft seal, preventing the corrosive vapor from entering into the motor to further lead breakdown, providing a convenient dismounting structure and improving the manpower burden of cleaning crystals at regular intervals.
Owner:ASSOMA
Nuclear power plant equipment supervision and predictive health management method
PendingCN112819241AExtended cycleReduce corrective maintenanceForecastingOffice automationNuclear plantPredictive maintenance
The invention relates to a nuclear power plant equipment class supervision and predictive health management method. The method comprises the following steps: formulating equipment class supervision and predictive management items of equipment; optimizing the current preventive maintenance outline according to the equipment class supervision and predictive management project; formulating a predictive maintenance report by adopting a preset period according to the equipment class supervision and predictive management project; and performing supervision and predictive management on the nuclear power plant equipment based on the predictive maintenance report. According to the invention, unified management can be carried out on nuclear power plant equipment, continuous or regular effective monitoring and evaluation can be carried out on the state of the equipment, planned maintenance can be carried out before the equipment fails, unplanned corrective maintenance is reduced, the period of optimizing preventive maintenance projects is helped, the reliability and availability of the equipment are improved, and the maintenance cost is reduced. Meanwhile, the service life of the equipment is prolonged, the maintenance cost of the equipment is reduced, and safe, reliable and economical operation of the equipment under the coverage of equipment supervision and predictive health management technologies can be ensured.
Owner:SUZHOU NUCLEAR POWER RES INST +2
Reactor core nuclear measuring plug inner pin removal tool and removal method
PendingCN108736293AEasy to take outSo as not to damageContact member assembly/disassemblyNuclear powerNuclear engineering
The invention belongs to the technical field of nuclear power station reactor core parameter measurement, and particularly relates to a reactor core nuclear measuring plug inner pin removal tool and aremoval method. The reactor core nuclear measuring plug inner pin removal tool of the invention comprises a push pin support member, a push pin guide tube, a push pin, a push pin support base and a push pin anti-drop clamping member, and can be used when the reactor core nuclear measuring plug inner pin is subjected to preventive and corrective maintenance; the pin removal process is quite convenient, and the pin itself and the mounting jacks are not damaged.
Owner:JIANGSU NUCLEAR POWER CORP
Method to analyze economics of asset management solutions for nuclear steam generators
ActiveUS20100145756A1Accurate analysisMaintain validityForecastingTechnology managementModel parametersAnalysis method
A method to determine corrective actions of a nuclear steam generator, having the steps of modeling of steam generator tube and deposit heat transfer characteristics by analytically deriving specific deposit characteristics and descriptive model parameters, wherein the modeling uses historical thermodynamic data for an operating plant under evaluation, identifying a set of one of preventive and corrective maintenance alternatives to accomplish steam generator deposit objectives, determining through the modeling a power production impact of each of the set of one of preventative and corrective maintenance alternatives to determine an economic cost for each of the set of preventative and corrective maintenance alternatives, and initiating a maintenance alternative with a lowest economic cost as compared to the maintenance evaluation alternatives with higher economic costs.
Owner:AREVA NP INC
Non-deterministic maintenance reasoner and method
InactiveUS9008895B2Vehicle testingRegistering/indicating working of vehiclesDiagnostic dataCorrective maintenance
Owner:HONEYWELL INT INC
RMS (reliability, maintainability and supportability) integral analysis method on basis of extended FMECA (failure mode, effects and criticism analysis)
InactiveCN108536878ARealize a unified applicationAvoid duplicationDesign optimisation/simulationSpecial data processing applicationsMaintainabilityMedicine
The invention discloses an RMS (reliability, maintainability and supportability) integral analysis method on the basis of extended FMECA (failure mode, effects and criticism analysis). The RMS integral analysis method is characterized by comprising S1, determining presentation characteristics of failure effects and failure modes; S2, analyzing failure syndromes or symptoms and determining test parameters and test points; S3, determining failure diagnostic schemes and failure diagnostic test processes; S4, determining preventive maintenance work types; S5, determining corrective maintenance work items and related maintenance support resources. The RMS integral analysis method has the advantages that definite design interfaces, analysis tables and analysis processes can be provided by the aid of the RMS integral analysis method, and the RMS integral analysis method is high in operability and has a high engineering application value.
Owner:BEIJING INST OF ELECTRONICS SYST ENG
Overheat fault monitoring device and method for valve side sleeve of converter transformer
PendingCN108511173AImprove reliabilityRealize real-time monitoringElectric component structural associationTransformerGas chamber
The invention discloses an overheat fault monitoring device for a valve side sleeve of a converter transformer. The overheat fault monitoring device comprises an SO2 detection head, a processing module, a battery, a GSM module and a mobile terminal, wherein the battery is used for supplying power to the SO2 detection head and the processing module; the SO2 detection head is directly arranged in agas chamber of the valve side sleeve through a flange opening in the gas chamber of the valve side sleeve, and used for detecting whether SO2 gas exists in the gas chamber or not; the processing module is arranged on an outer wall of the valve side sleeve and connected with the SO2 detection head through a cable, and establishes a communication connection with the mobile terminal through the GSM module; a detection result is sent to the mobile terminal through the GSM module; and the mobile terminal is used for receiving the detection result, and judging the location of a failed sleeve. The overheat fault monitoring device for the valve side sleeve of the converter transformer disclosed by the invention is used for realizing overheat fault monitoring of the valve side sleeve of the converter transformer, and timely reporting an abnormal state to operation and maintenance personnel to provide a basis for the corrective maintenance of the valve side sleeve, so that the operation and maintenance personnel can timely know the position of the failed valve side sleeve, and timely perform operation and maintenance.
Owner:EAST INNER MONGOLIA ELECTRIC POWER COMPANY +1
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