45 results about "Operating life" patented technology

The present application relates to the field of wind power generation technology, provide based on visual detection's wind turbine tower drum bolt loosening quantity identification method, the present application detects the actual maximum displacement variable of tower drum top along the cabin body direction when the fan runs, the actual maximum displacement variable of the flange plane along the cabin body direction where the bolt to be identified is located and the distance from the center of the bolt to the center of the flange plane where the bolt to be identified is located, calculates the maximum total external load suffered by the tower drum bolt, thereby identifying the loosening condition of the tower drum bolt, providing a new way to prevent the damage of the fan caused by the loosening of the tower drum bolt, thereby prolonging the operating life of the fan tower drum, improving the maintenance efficiency, reducing the maintenance cost, improving the safety and stability of the system.

The invention discloses a gear service life evaluation method, and belongs to the technical field of aerospace mechanism service life evaluation. According to the technical scheme, firstly, a five-stress wear rate data set containing the rotating speed, the torque, the temperature alternating, the vacuum degree and the microgravity is established; then constructing a tooth surface solid lubricating film thickness evolution model based on a Hertz-Archard coupling model, and taking the film thickness approaching to zero as a failure criterion; acceleration factors under each acceleration working condition are calculated through model iteration, and a gear acceleration life test is carried out under an optimized working condition; after the test, the film thickness is measured and compared with model prediction, the rated working condition life of the gear is reversely deduced, the long-time on-orbit life of the gear is equivalently predicted through the short-time ground test, and high acceleration efficiency and reliability are achieved. The technical problems of environmental simulation distortion and low acceleration efficiency in aerospace lubrication gear service life evaluation are solved.

The present invention belongs to the technical field of wind turbine bearing abnormality identification, and relates to a system and method for identifying bearing jam anomalies of wind turbines. The method includes three parts: checking the abnormal rotation speed in the standby state; checking the abnormal startup time during the startup process; and abnormal bearing temperature rise in the power generation state. The three conditions are judged, and the bearing abnormality is located when all are met. The algorithm can be transplanted into the field controller to conduct regular inspections of all units in the field, and issue early warning information to prompt operation and maintenance personnel to conduct further inspections and take action in advance to avoid the expansion of bearing problems, extend the operating life of the unit bearings, and avoid power generation losses of the unit. The operation big data of the wind turbine is analyzed, and by comparing various anomalies in the standby process, startup process, and operation process, the bearing problems in the unit transmission chain are effectively identified.

The application discloses a TBM cutter head main drive intelligent decision method and system, and belongs to the technical field of cutter head drive control. By constructing a master-slave type multi-drive unit collaborative architecture, unified regulation and control and target torque distribution of the drive system are realized; by monitoring current signals to identify faults, voltage vectors are reconstructed according to fault types, and continuous and stable output under faults is ensured; a disturbance observation method based on integral sliding mode is proposed, control deviation caused by system disturbance and parameter change is dynamically estimated and compensated; an MPTA control strategy of high-frequency virtual signal injection is designed, utilization of reluctance torque and stable tracking of the MTPA operating point are realized; the torque output capacity of the fault unit and the torque margin of the healthy unit are considered as a whole, a load distribution strategy is planned, and the overall load carrying capacity and operating life of the drive system are improved.

The present invention relates to a fastening device, particularly a support, designed and configured to receive a bearing in a textile machine, especially a rotor spinning machine, having at least one inner ring region and at least one outer ring region. To improve the safety of the operation of the textile machine, extend the operating life of the textile machine, and thus conserve resources, and to improve the operation of the textile machine, the inner ring region and the outer ring region are provided to be formed integrally.

The application discloses a kind of unmanned aerial vehicle flight task planning methods with heat stealth function, method includes: unmanned aerial vehicle state acquisition, obtain the information such as the initial resource, speed of unmanned aerial vehicle task weight in cluster, respectively calculate the flight time of each unmanned aerial vehicle, the task load of unmanned aerial vehicle, the path cost of unmanned aerial vehicle, finally optimize the path of each unmanned aerial vehicle in cluster by genetic algorithm.The method provided by the application comprehensively considers the self resource of unmanned aerial vehicle, stealth performance, the risk that possibly be detected by enemy, and is convenient to calculate, parameter is easy to measure or estimate, can quickly optimize the task planning of unmanned aerial vehicle, saves energy for unmanned aerial vehicle to execute various complex tasks, improves operating life and work efficiency and provides technical support.

The application discloses a kind of life prediction method and system based on bearing wear state monitoring, comprising the following steps: step S1, obtain the wear state historical time series data of a plurality of bearings representing the entire operating life, and fit out life curve function based on the wear state historical time series data;Step S2, the wear state data of the target bearing to be predicted is input into the life curve function to predict the remaining life of the target bearing, the application uses the wear state historical time series data of a plurality of bearings representing the entire operating life to fit out life curve function, can realize only the wear state data of bearing is obtained to obtain the remaining life of bearing, and based on principal component extraction when the wear state historical time series data is acquired, only the state monitoring data with strong correlation with life is retained, realize the effective compression of data, guarantee the prediction correctness of life curve function while improving the fitting efficiency.

Gate valve embodiments, including assemblies, seats and seals, kits, and associated methods, are provided to improve operational performance by a reduction of particle intrusion at associated seals. In an embodiment, a gate valve has an actuator, a gate connected to the actuator, a valve body, and a valve seat with a debris protection seal thereon and one or more debris cavities therein. The valve seat is positioned in a bore of the valve body. The debris protection seal is positioned in a seal recess of the valve seat to contact a distal radial wall of the bore to elongate a debris path, thereby to reduce debris migration to the bore that causes leaks. The debris cavities are positioned in a distal surface of the valve seat to capture debris that has migrated through the debris protection seal, further reducing debris migration to the bore that causes valve leaks.

The present application aims to provide a kind of self-checking method of air compressor working performance, which can monitor the internal mechanical wear and tear and external pipeline flow resistance of air compressor in real time, report the estimated results of relevant information in real time, and through self-checking and self-reporting the health condition of air compressor, can make the after-sales end intervene in targeted maintenance work, improve the service life of the whole machine, reduce the sudden failure of air compressor, and ensure the safe operation of vehicle.The present application includes air compressor, air tank, air compressor controller, instrument and vehicle controller, external air is accessed to the air inlet of air compressor through filter, the air outlet of air compressor is accessed to air tank through dryer, air compressor is electrically connected with air compressor controller, instrument, air compressor controller, dryer and air tank are electrically connected with vehicle controller.The present application is applied to the technical field of compressor control.

The present invention discloses a method for improving the service life of a supercharged turbine in a mechanical oxygen system, as well as a turbine axial force testing device and method. The turbine axial force testing device includes a shaft, bearings, bushings, bearing housings, sealing bushings, impellers, intermediate housings, volutes, and a data acquisition instrument, strain conditioner, stress ring, press, etc. required for axial force testing. During the axial force test, the force-strain relationship and temperature-strain relationship of the stress ring are tested separately. When the test result error is within a set range, the axial force value is determined by combining the strain value in the temperature-strain relationship with the force-strain relationship. The present invention determines the key factors that affect the service life of the supercharged turbine, and at the same time realizes the axial force test of the supercharged turbine in the mechanical oxygen system, providing a reliable and powerful basis for the axial force balance design of the supercharged turbine to ensure the operating life of the supercharged turbine.

The present invention discloses an amorphous alloy transformer with buffer protection, which relates to the technical field of transformers. A number of protective springs are equidistantly installed at the inner bottom end of the outer fixed integration box. The top end of the protective spring is fixed with an inner fixed processing box, and the top end of the inner fixed processing box is fixed with a top sealing fixing plate. Fixed dampers are symmetrically installed at the inner bottom end of the outer fixed integration box, and elastic rubber blocks are installed at the top ends of the fixed dampers. The present invention effectively solves the problem in the prior art that due to factors such as magnetic field changes, electromagnetic force imbalance, uneven cooling rates of silicon steel sheets and windings, etc., the equipment generates large-amplitude vibrations and noises, and avoids the resonance reaction of the equipment affected by vibrations and noises, thereby realizing the protective treatment of transformer components, reducing the speed of component damage, and cooperating with circulating cooling and three-stage linkage cooling, effectively reducing the temperature of the transformer during continuous operation and improving the operating life of the transformer.

This invention relates to a pneumatic anti-manipulation load simulator and its simulation method, belonging to the field of load simulation technology. It solves the problems of existing anti-manipulation load simulators, such as numerous components, short service life, complex control, low loading accuracy, and large size. The pneumatic anti-manipulation load simulator of this invention includes: a cylinder assembly, an eccentric shaft, a transition shaft assembly, and a servo mechanism. The output end connecting rod of the cylinder assembly is rotatably connected to the eccentric shaft via a lug. The eccentric shaft can rotate around the output shaft axis of the servo mechanism under the drive of the cylinder assembly. The eccentric shaft is connected to the output shaft of the servo mechanism via the transition shaft assembly. When the cylinder drives the eccentric shaft to rotate, an anti-manipulation load can be applied to the output shaft of the servo mechanism through the eccentric shaft and the transition shaft assembly. The structure is simple and the control accuracy is high.

The utility model discloses a high-precision anti-backlash linear bearing which comprises a bearing seat, a metal outer sleeve is arranged in the bearing seat, an inner sleeve is fixedly connected in the metal outer sleeve, adjusting gaps are formed in one side of the interior of the metal outer sleeve and one side of the interior of the inner sleeve, a fixing block is arranged in the metal outer sleeve in a circular shape, and the fixing block is fixedly connected with the metal outer sleeve. Limiting grooves are symmetrically formed in one side of the interior of the bearing seat, limiting rings are arranged in the limiting grooves, the two-way threaded rod is rotated, the connecting blocks are in threaded connection with the two-way threaded rod, the distance between the two ends of each limiting ring is gradually decreased, the inner diameter of each limiting ring is decreased, and therefore the metal outer sleeve and the metal inner sleeve continue to be shrunk; the gap between the shaft and the bearing is eliminated, and the problems that the inner diameter gap between the shaft and the bearing is increased, so that vibration and noise are generated in the movement process, even the linear precision cannot be guaranteed, the service life is shortened, and the operation life of other parts of the whole machine is affected are solved.

The present application relates to the technical field of power system, disclose a kind of station SVG reactive dead zone hedging distribution strategy and device.The station SVG reactive dead zone hedging distribution strategy of the present application includes the following steps: obtaining application station information;Obtain total reactive demand Q req ;Based on total reactive demand Q req , determine minimum constraint target T min Calculation method;Iterative solution minimum constraint target T min And store corresponding calculation result;Based on the total reactive demand and the minimum constraint target T min , determine the reactive power distribution strategy corresponding to each available SVG, obtain reactive power instruction matrix.The station SVG reactive dead zone hedging distribution strategy of the present application can realize the accurate distribution of reactive power instruction under different SVG rated capacity and different SVG reactive dead zone, improve the precision of station reactive control;It can be realized that each SVG reactive output load is minimum under the premise of meeting total reactive demand, corresponding SVG device loss is minimum, and the operating life of SVG device is improved.

The application discloses a kind of unmanned aerial vehicle power management method, device and system based on thermal stealth material, the method includes: the real-time power requirement calculation of each functional system;Power resource allocation calculation;Optimization correction based on adjustment function;Final maximize unmanned aerial vehicle task efficiency and endurance time.The method provided by the application comprehensively considers the power requirement difference of each functional system of unmanned aerial vehicle when performing different tasks, fully considers the influence of external environment on power requirement, considers that, under high load task, the shortage of power management can cause the endurance time of unmanned aerial vehicle to decrease substantially, affect the execution effect of its task and the like risk, and calculation is convenient, parameter is easy to measure or estimate, can quickly carry out power resource allocation of each system of unmanned aerial vehicle, provides technical support for safe work, energy saving, improves operating life and work efficiency of unmanned aerial vehicle.

The present invention belongs to the field of concrete mixer trucks and discloses a spherical flexible support device and a concrete mixer truck, comprising a base, a body, and a connecting plate. The base has a mounting hole, the inner wall of the mounting hole comprising an inner spherical surface and a cylindrical surface connected to each other, an elastic sleeve being sleeved on the cylindrical surface, and an axial protrusion being provided on the elastic sleeve. Both sides of the mounting hole have a plane and a first vertical surface connected to each other, and an elastic block is provided on the plane. The body has a receiving cavity, and second vertical surfaces are provided on both sides of the receiving cavity. The two ends of the elastic block are respectively in contact with the first vertical surface and the second vertical surface on the same side. The outer wall of the receiving cavity comprises an outer spherical surface and an outer conical surface connected to each other, the outer spherical surface is in contact with the inner spherical surface, and the outer conical surface is in contact with the elastic sleeve. Lubricant is provided in the receiving cavity, and a plurality of lubrication holes are provided on the side walls of the receiving cavity. A plurality of connectors are provided on the connecting plate, and the connectors are connected to the body. The device effectively compensates for the error angle between the mixing tank and the reducer, improves the overall operating life and reliability, and is low in cost.

The present invention provides a control method and storage medium for a fire-fighting fluid supply system, belonging to the field of firefighting technology. The fire-fighting fluid supply system includes: a fire pump; a fire-fighting nozzle; a fluid supply pipe; a valve; a command input module; and a controller. The control method comprises the following steps: the controller reads a firefighter's command from the command input module at a preset time interval Δt, executes a control operation, and records the control operation; t = 0 is set as the time the fire-fighting fluid supply system is powered on; then, at time t = iΔt, the controller executes a control operation according to a specified rule based on the command at that time, the valve opening, the speed of the adjustable motor, and the control operation record since power-on. The present invention achieves flexible, rapid, efficient, and reliable regulation of the spray flow rate and spray speed while saving operating energy and extending operating life.

A smart steering control system a paving or texturing machine receives path elements corresponding to current and future positions of the machine. By comparing the current and future elements, an expected completion time is derived for exiting the current position and entering the future position; the smart steering control system synchronizes adjustments of the machine's steerable tracks from the current path to the future path. The smart steering control system functions as a virtual tie rod, preventing damage, enhancing the traction control and pulling power of the machine, and preserving the operating life of its components.

A modular and on-demand battery thermal management system (BTMS) for an electric machine with a battery is disclosed. The BTMS may include one or more independently operable BTMS modules, where each BTMS module may be configured to cool a corresponding component of the electric machine, such as a particular battery pack. Each BTMS module, in turn, may include a plurality of BTMS units that cool coolant that is to be delivered to the components that are to be cooled within the electric machine. The individual BTMS units may be independently operable by a BTMS controller based at least in part on the cooling needs of the components to be cooled. The BTMS controller is also configured to select BTMS units to operate in a manner that maximizes the operating life and durability of the BTMS.

The present invention discloses a precision reducer, comprising a base, an input end ball bearing, a plane groove cam, a cylindrical cam, a rocker, a plate tooth, a deep groove ball bearing, an output gear, an output flange, an output end ball bearing, and an upper end cover. The precision reducer is a two-stage reduction type. The first stage of reduction occurs between the plane groove cam and the rocker, and the second stage of reduction occurs between the rocker and the plate tooth. The present invention breaks the multiple gear meshing transmission adopted by the traditional reducer, and cleverly combines the cam and the gear together; in addition, it improves the traditional reducer, which causes the gear teeth of each gear to be subjected to a large synthetic stress due to the small contact area of ​​the gear teeth. Compared with the traditional gear system, the gear has a longer working life. Compared with the currently commonly used industrial robot joint precision reducer, it has a simple and compact structure and a small size, while being able to transmit a larger torque and realize a transmission with a large reduction ratio, which can meet the needs of the industrial robot joint for a high-precision reducer.

Provided are a compressor and a management system that are capable of extending the operating life of a compressor while easing the burden on a user.　A compressor 1 comprises a compressor body 3 that compresses air, and a control device 17 that controls the operation of the compressor body 3. If operation of the compressor body 3 is resumed when the stop time of the compressor body 3 is greater than or equal to a preset time A, the control device 17 executes a diagnostic operation mode which determines the presence or absence of abnormalities while reducing the load on the compressor body 3 relative to a regular operation mode.

Gate valve embodiments, including assemblies, seats and seals, kits, and associated methods, are provided to improve operational performance by a reduction of particle intrusion at associated seals. In an embodiment, a gate valve has an actuator, a gate connected to the actuator, a valve body, and a valve seat with a debris protection seal thereon and one or more debris cavities therein. The valve seat is positioned in a bore of the valve body. The debris protection seal is positioned in a seal recess of the valve seat to contact a distal radial wall of the bore to elongate a debris path, thereby to reduce debris migration to the bore that causes leaks. The debris cavities are positioned in a distal surface of the valve seat to capture debris that has migrated through the debris protection seal, further reducing debris migration to the bore that causes valve leaks.

The present disclosure provides embodiments of gate valves, gate valve assemblies, gate valve seats and seals, kits, and associated methods to enhance gate valve operational performance. In an embodiment, a gate valve has an actuator, a gate connected to the actuator, a valve body, a valve seat, a seat pressure seal, and a debris protection seal. The valve seat is positioned in a valve seat recess of the valve body and is configured to contact the gate during operation and substantially align with an inner diameter of a throughbore of the valve body. The seat pressure seal is positioned on a first portion of the valve seat to sealingly contact the valve seat recess when the gate compresses against the valve seat. The debris protection seal is disposed within the valve seat to prevent debris from compromising the seat pressure seal.

An ingress prevention system for use with pneumatic or hydraulic jack cylinders prevents debris and / or fluids from gaining access to portions of the pneumatic or hydraulic jack cylinders. The ingress prevention system includes a boot operable to retain and / or seal at least a portion of one or more jack cylinders within a boot cavity. The ingress prevention system reduces a jack cylinder's exposure to debris and / or fluids to maintain performance and prolong the operating life of the jack cylinder. The ingress prevention system further comprises at least one barrel seal operable to wipe debris and / or fluids from the surfaces of a piston rod as the piston rod reciprocates within a barrel.

Monitoring system (300) for a superconducting magnet (200), comprising: a computer (CMP) connectable to the superconducting magnet (200) having a cryogenic system equipped with a compressor (5) and a cooling head (6) configured to maintain a cryogenic bath (3) at an operating temperature of a superconducting coil (1). The computer (CMP) comprises a computer program (SW) configured to receive historical / statistical data relating to the magnet and calculate an unreliability index RI by means of a sum of the following terms: a first term HMinCH expressing an operating life at the current time of the cooling head (6); a second term subtractive, which expresses a minimum statistical life of cooling heads, a third term FgpCH which expresses a probability of premature failure of the cooling head (6). The monitoring system is configured to generate messages with recommendations for a user in relation to operations to be performed on the magnet.

This application relates to the field of space electric propulsion technology, specifically to a method for establishing a variable boundary simulation model of an ion thruster gate assembly. The method includes: Step 1: dividing the gate into regions; Step 2: selecting the object to be studied within each region; Step 3: calculating the upstream ion density of each object; Step 4: calculating the corresponding Debye length and determining the maximum values ​​of the calculation region in the lateral and radial directions; Step 5: handling collisions between atoms; Step 6: establishing a simulation calculation model; Step 7: calculating the gate morphology; Step 8: correcting the gate simulation calculation model; and Step 9: completing the establishment of the variable boundary simulation model of the ion thruster gate assembly. This application utilizes the sputtering etching morphology obtained from simulation calculations to update and improve the simulation calculation model in real time, enabling more accurate prediction of the thruster's operational lifespan, significantly shortening the product development cycle and reducing development costs.

The utility model relates to a double lubrication cavity motor for a two-wheeled vehicle, which comprises a stator shaft, a rotor end cover and a rotor brake cover, the rotor end cover and the rotor brake cover are arranged on the stator shaft in a penetrating manner to form a motor shell, sealing lubrication cavities are respectively formed at the rotor end cover and the rotor brake cover, bearings are arranged in the sealing lubrication cavities, and a lubrication passage which penetrates through the sealing lubrication cavities and is communicated with the interior of the motor shell is formed. The double-lubricating-cavity motor can continuously supply lubricating grease to the framework oil seal and the deep groove ball bearing for a long time, ensures long-time normal operation of a sealing piece and an operating piece of the motor, and solves the problem that the sealing of the motor fails or the operation of a bearing piece fails after the lubricating grease in the oil seal and the bearing is consumed up. Therefore, the motor protection sealing level and the durability of the rotating part and the bearing part are improved, and the service life of the motor is prolonged.

The invention relates to a method and a device for predicting the exhaust emissions of an exhaust gas aftertreatment system of an internal combustion engine, the exhaust emissions being influenced by exhaust gas aftertreatment devices (27, 29, 33) of the exhaust gas aftertreatment system (22), the functionality of at least one exhaust gas aftertreatment device (27, 29, 33) being checked by means of an on-board diagnostic unit (40), and calculating exhaust emissions by means of an emission model (42) from the combustion data and by means of a simulation of physical and chemical processes within the exhaust aftertreatment device (22). When a change in functionality of at least one exhaust gas aftertreatment device (27, 29, 33) checked by the on-board diagnostic unit (40) is detected, this change is transmitted to the emission model (42) according to the invention, and this change is taken into account when the exhaust emissions are calculated by means of the emission model (42). As a result, it is possible to ensure that real-time emissions of the internal combustion engine can be accurately predicted over the entire operating life.

The invention relates to the technical field of source network load storage, and discloses a source network load storage clustering joint optimization method and device based on distributed coordination, and the method comprises the steps: determining an active power demand and a reactive power demand at a current moment; obtaining the internal resistance of the energy storage unit, the change rate of the internal resistance to the temperature and the heat capacity; determining a positive feedback intensity core based on the internal resistance, the change rate of the internal resistance to the temperature and the heat capacity, and forming a distribution criterion by minimizing the maximum value of the positive feedback intensity core; generating a current instruction according to the distribution criterion meeting the active power demand; and generating a reactive current instruction according to the distribution criterion meeting the reactive power demand. The overall operation life of the energy storage cluster can be prolonged, and the economical efficiency and reliability of the system are remarkably improved on the premise that active and reactive power requirements and apparent power safety constraints are met.

The present invention discloses a method for manufacturing a cooling water system for a roller and a method for cooling the roller, and relates to the technical field of high-temperature solid particle crushing, briquetting or compacting equipment for coal, metal, mining, chemical industry, etc. The present invention provides a method for manufacturing a cooling water system for a roller and a method for cooling the roller, which adopts a structure combining a connecting groove and an axial water channel to realize the division of the roller surface cooling water channel area and the path arrangement. The structure is simple and easy to produce and manufacture. The cooling area and the cooling water flow direction of the roller surface cooling water channel can be effectively adjusted through the outer ring distribution part; the segmented cooling method is adopted to make the temperature difference on the circumference of the roller and the roller surface smaller, effectively reducing the dimensional expansion value caused by the temperature difference when the roller is cooled, so as to improve the operating life and reliability of the roller.