340results about How to "Increased operating life" patented technology

A controller for controlling a light emitting diode (LED) light engine. The controller includes a temperature sensor configured to sensor temperature at the LED light engine. A current sensor senses a drive current of the LED light engine. A voltage differential sensor senses a voltage differential across LEDs of the LED light engine. A timer monitors a time of operation of the LED light engine. Further, a control device controls the drive current to the LED light engine based on the sensed temperature, the sensed drive current, the sensed voltage differential, and the monitored time of operation. Further, the control device outputs an indication of intensity degradation of an LED, and if the intensity degradation exceeds a predetermined threshold the control can output an indication of such to a user, so that the user can be apprised that the LED needs to be changed.

A blood pump has an impeller rotatably disposed and magnetically suspended within a cavity of a stator by a plurality of magnetic bearings (passive permanent and active electromagnetic) having impeller magnets on the impeller and stator magnets or coils/poles on the stator. A motor includes impeller magnets on the impeller and coils/poles associated with the stator. A single, annular blood flow path extends axially through the cavity between the impeller and the stator, and between the impeller magnets on the impeller and the stator magnets or the coils/poles on the stator.

A method for removing contaminants from an organic-based feed stream which includes the use of a layer of reticulated ceramic material to filter the organic-based feed stream and to provide liquid distribution upstream of the catalyst bed.

An organic electroluminescent device comprises an anode, a hole injection layer as CFx formed on the anode, a first hole transport layer formed on the hole injection layer and the first hole transport layer doped with a P-type dopant, a second hole transport layer formed on the first hole transport layer, a light emitting layer formed on the second hole transport layer, an electron transport layer formed on the light emitting layer, and a cathode formed on the electron transport layer. According to the structure of the organic electroluminescent device disclosed in the present invention, the hole injection layer and the first hole transport layer provide the function of increasing the efficiency of the hole injection so as to improve the operating life and stability of the device.

The invention provides a fuel cell and lithium ion battery hybrid system, which comprises a fuel cell subsystem, a lithium ion battery subsystem, a charge control subsystem, an intelligent hybrid power management system, a motor and a motor control system. A fuel cell serves as a main operation power source while a lithium ion battery serves as an auxiliary power source. The problems that the fuel cell of the pure fuel cell automobile is short in service life and the energy is unrecyclable can be solved, and the problems of long charge time, potential burning and explosion in continuous high-current discharge, attenuation and self discharge of the pure lithium ion battery electric vehicle are also solved. Service lives of the fuel cell and the lithium ion battery are effectively prolonged, the cost of the power system is reduced, reliability and safety are improved, energy recovery is realized, and accordingly the fuel cell and lithium ion battery hybrid system is an excellent solution to the power source problem of electric vehicles.

The invention relates to a dynamic capacity increasing method for an oil-immersed transformer, and belongs to the field of transformers. The method includes the steps that heat conduction process in the transformer is simplified into a circuit model; winding hot-spot temperature, top oil temperature, average oil temperature, average winding temperature of the transformer under the current load condition are calculated; according to the limit that the winding hot-spot temperature does not exceed 140 DEG C, whether temperature in the transformer will exceed the limit temperature or not under the current load and environment conditions is calculated, whether a temperature limit value is reached or not if long-term emergency loads or short-term emergency loads occur at the moment is calculated, and if the temperature in the transformer possibly exceeds the limit value of the short-term emergency loads, the time for reaching the limit value and the finally reached steady state temperature are calculated to serve as alarm signals; if it is monitored that the temperature will exceed the standard within t minutes, an early-warning signal is sent out, certain time delay is set, and if the loads are not reduced within the set time delay, a cooling fan of the transformer is turned on. Long-term continuous operation of cooling equipment can be avoided, and operation life of the cooling equipment is prolonged.

A method for removing contaminants from an process stream that includes the use of reticulated material to filter the process stream. The reticulated material also facilitate process stream flow distribution in process units. The reticulated material can be packed with a void space between a substantial number of the reticulated material that can be varied to enhance filtration and flow distribution. The method of filtering also provides a method of removing contaminants leaving process equipment. The methods can be used on a variety of process streams and process equipment. The reticulated material can include ceramics, metallic materials, and chemical vapor deposition elements. The reticulated material can be of various shapes and sizes, and can also be catalytically active.

The invention discloses a high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire and a production method of the high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire. The high-conductivity non-heat-treatment type moderate-intensity aluminum alloy wire is produced by finely selecting ingredients and contents of aluminum alloy and conducting process control. The specific steps are as follows: selecting Fe, Si, Mg, Cu and Re with different weight percents, melting aluminum ingot with the content not more than 0.03% in a vertical melting furnace, adding alloying elements in a heat insulation furnace, stirring, refining, conducting on-the-spot contents rapid analysis, carrying out content adjustment, and standing, enabling the aluminum ingot and the alloying element into a continuous casting machine for casting, rolling to be a circular aluminum alloy rod on a continuous rolling machine, pulling the circular aluminum alloy rod to be a circular aluminum alloy wire and twisting the circular aluminum alloy wire to be a conductor for aerial power transmission and distribution. According to the application of the aluminum alloy wire and the production method of the aluminum alloy wire, the aluminum alloy wire directly replaces the generally used aluminum conductor steel reinforced and is an energy-saving, environment-friendly and novel wire.

The invention relates to a method and a special device for the comprehensive control of a storage battery pack, which is characterized in that: storage batteries are discharged or charged by measuring the surface temperature of each storage battery of the storage battery pack and the terminal voltage of each storage battery of the storage battery pack; and a storage battery open circuit alarming signal or a storage battery pack overvoltage alarming signal is output by measuring the floating charge current of the storage battery pack. The special device consists of a main machine (1) and a plurality of monitoring and controlling units (11) with the same structure, wherein the main machine (1) comprises a main control circuit (10), a floating charge current measuring circuit (2), a bus voltage measuring circuit (3), a charge module circuit (4), a discharge module circuit (5), a liquid display (7) and a keyboard input circuit (8). The monitoring and controlling units (11) are parallelly connected; and the output ends of the charge module circuit (4) and the discharge module circuit (5) are connected with the charge control input end and the discharge control input end of charge and discharge control circuits (13) in the monitoring and controlling units (11) respectively. The method and the device are widely used for detecting the storage batteries for power plants, transformer substations, telecommunication and the like.

The present invention belongs to the technique field of wind power generation, and relates to a yawing device of an aerogenerator, which consists of a controller, a yawing arrester, a yawing pilot relay, a yawing contactor, a yawing electric motor, a yawing retarder, a yawing outer rotor, a yawing counter, a cable sensor, a dogvane, and an anemoscope. The electric motor is connected with the yawing retarder which is joggled with a big yawing rotor. The controller controls the yawing arrester according to the input signal of the dogvane or the anemoscope, and the operation of the yawing electric motor by the yawing pilot relay and the yawing contactor. The yawing electric motor drives the big yawing rotor by the yawing retarder. The electric motor is a magnetoelectric machine with the structure of Halbach magnet. The present invention can improve the starting performance of the yawing device and cause the yawing device to drive the main flight crew compartment to rotate easier under the work situation of frequent starts and stops; at the same time, the over loading capability of the yawing electric motor is improved and the malfunction rate of the yawing device is decreased to maintain the workload, and the operation life of the yawing electric motor is prolonged.

A portable pill crushing device includes a housing having a base, a motor disposed in the housing, a battery for supplying electrical power to the motor, and a series of rotatably mounted rollers connected to the motor. A pressure plate is attached to the housing and is movable between a closed position in which a crushing chamber is defined between a first surface of the pressure plate and the outer surfaces of the rollers, and an open position in which the pressure plate can be used to provide a manual pre-crushing operation to reduce large pills to an acceptable size range. The housing has a vacuum lock system in its base for anchoring the crushing device to a smooth surface. Plastic enclosures are provided for encasing the pills to prevent direct contact of the pills with the rollers and the pressure plate to avoid contamination.

An electric drive unit provides a simple and economical electrical connection of an electric motor and an electronic module. The commutator of the electric motor, a brush rocker ring arranged on the commutator, and the drive shaft of the electric motor as well as the carrier body of the electronic module are inserted into a transmission housing. In the transmission housing, the carrier body of the electronic module is positioned so that contact elements provided on the brush rocker ring engage into contact points provided on the carrier body of the electronic module. The electric drive unit can be used for window lifter drives.

A lead acid battery comprising a negative electrode, a positive electrode comprising lead oxide, an electrolyte in physical contact with the negative electrode and the positive electrode, an optional separator positioned between the negative electrode and the positive electrode, wherein the negative electrode comprises a plurality of particulates of graphene-protected lead or lead alloy, wherein at least one of the particulates is formed of a single or a plurality of graphene sheets and a single or a plurality of fine lead or lead alloy particles having a size smaller than 10 μm, and the graphene sheets and the particles are mutually bonded or agglomerated into the particulate with at least a graphene sheet embracing or wrapping around the particulate, and wherein graphene is in an amount of at least 0.01% but less than 99% by weight based on the total weight of the particulate.

A storage device provides a logical space based on a storage medium that is configured by a plurality of logical areas to the higher-level apparatus, and a base data range exists in the storage medium for each logical area. The storage device reads the base data from the base data range that is corresponded to a write destination logical area to which the write destination logical address belongs, and creates difference data that is an exclusive OR of first data that is the base data and second data that is any one of data based on write data and the write data. The storage device creates compressed difference data by compressing the difference data, writes the compressed difference data to the storage medium, and associates a difference data range that is a range in which the compressed difference data has been written with the write destination logical area.

A touch control display screen with a built-in electromagnetic induction layer of wire lattice includes at least a display screen and a housing. An induction layer is provided behind the display screen and is connected to the induction collection control circuit by its output. A control circuit of display screen is provided in the housing. The induction layer is a wire lattice winded and interlaced separately by the wires along the X and Y axes. The wires are insulated with each other at the crossing points. The space within each lattice unit constitutes one induction cell. Because the electromagnetic induction layer is placed behind the display screen and a printed electromagnetic induction antenna array with flexible membrane is adopted as a recognition induction element, it is easy to manufacture and the cost is low.

A furniture system is particularly adapted to support group activities in open plans, and the like. A plurality of columns support an overhead framework on the floor of a building in a freestanding fashion at a predetermined elevation, generally above average user height. A plurality of individual panels are provided, wherein each panel is constructed to permit easy, manual, bodily translation of the same by an adult user. A hanger arrangement is associated with the overhead framework, and cooperates with connectors on the panels to detachably suspend the panels at various locations along the overhead framework. The panels are manually reconfigurable between many different arrangements to efficiently and effectively support different group activities. Preferably, the panels are capable of providing a partitioning function to visually divide at least a portion of the workspace, and/or a display function to facilitate group communications.

A refining plate segment for a mechanical refiner of lignocellulosic material including: a refining surface on a substrate, wherein the refining surface faces a refining surface of an opposing refiner plate, the refining surface including bars and grooves between the bars, wherein an angle of each bar with respect to a radial line corresponding to the bar increases at least 15 degrees along a radially outward direction, and the angle is a holdback angle in a range of 10 to 45 degrees at the periphery of the refining surface, and wherein the bars each include a leading sidewall having an irregular surface, wherein the irregular surface includes protrusions extending outwardly from the sidewall towards a sidewall on an adjacent bar and the irregular surface extends from at or near the outer periphery of the refining surface extends radially inwardly along the bars without reaching an inlet of the refining surface.

A rock breaking machine and to a method of lubricating a tool of a rock breaking machine. The lubricating system comprises at least one lubricant channel (23) into which lubricant is fed by a lubricating device (24). Lubricant is supplied to the bearing members (19) of the tool (6, 13) of the rock breaking machine. The lubricating device comprises a lubricant container (25) and a transfer device (26). The transfer device (26) controls the feed of lubricant into the lubricant channel. The lubricant container (25) is integrated into the body (17, 18) of the rock breaking machine.

A mechanical bladder pump is provided for collecting fluid samples from a well. The pump includes an outer tubular member having a longitudinal bore, and an inner tubular member arranged within the bore of the outer tubular member. The inner and outer tubular members are connected at their lower ends to a compressible bladder, and are arranged for oscillating movement relative to each other to expand and compress the bladder. The lower end of the bladder is open to an inlet passage, and the upper end of the bladder is open to an outlet passage. First and second check valves are provided to control the flow of fluid through the bladder during operation of the pump. A return spring is used to store energy during a tension stroke of the inner tubular member and to release energy during a compression stroke thereof. The pump provides highly representative samples of groundwater.

The invention discloses a system for managing energy in an echelon battery pack energy storage station. The system adopts a distributive topology structure and includes an echelon battery module, an energy storage converter and a monitoring system. The monitoring system is set with monitoring cycles each of which includes the following steps when begins: 1. a charge state acquisition unit which is disposed inside the echelon battery module on each branch acquiring the charge state of each echelon battery module, uploading the charge state to the monitoring system through a CAN bus; 2. the monitoring system, based on the charge state of the echelon battery module of each branch and a dynamic power value that is set, calculating the power value that requires real-time controlling of each branch, issuing the power value to a corresponding energy storage converter for performing control, further controlling the real-time power in charging and discharging of each branch. According to the invention, the system ensures that the overal power meets systematic requirements, and the operation efficiency and service lifetime of the system is increased, and the risks of ineffectiveness of a single branch caused by over-charging or over-discharging of a single branch.

The invention relates to a composite contactor which belongs to the field of electric switches, in particular to a contactor suitable for powering on and off a power capacitor. In the invention, an input power supply is subjected to current limit by a capacitor voltage drop circuit and rectification by a rectifying circuit and used for supplying power to a control coil of the contactor; the capacitor voltage drop circuit is connected with a starting electronic switch in parallel, the control end of the starting electronic switch is connected to a control circuit, and the control circuit is connected with a working power supply; a voltage zero passage detection circuit and a controllable silicon circuit are connected to two ends of a mechanical contact of the contactor in parallel; and the output end of the voltage zero passage detection circuit and one on control end of the controllable silicon circuit are connected to the control circuit, while the other on control end of the controllable silicon circuit is connected to a contact bridge of the contactor. The control coil of the composite contactor adopts a capacitor voltage drop direct current working manner, and the controllable silicon circuit adopts a design with multiple control ends, so that the composite contactor has the advantages of environmental protection, energy saving, strong anti-jamming, power on work, power on with voltage zero passage, power off with current zero passage, short controllable silicon on time, high reliability and long operation service life.

A light (10, 11) of an apparatus for illumination of a sign (1), in particular of a traffic sign, is part of a unit (7, 8) which can be attached permanently to the existing sign and contains a power supply which is independent of the mains. In addition to the illumination of the sign, a further light (12) may also illuminate a surrounding area, for example areas of footpaths and roads.

A power supply system is disclosed, including a first plurality of power supply units configured to supply working voltages from a battery to a second plurality of loads, a large-capacitance capacitor configured to charge electric charges from the battery, a third plurality of switching means for connecting the large-capacitance capacitor to the second plurality of loads selectively, control means for switching the third plurality of switching means corresponding to the load presently driven, and discharge means, in a case where the output voltage of the large-capacitance capacitor is higher than the operating voltage of the second load when the capacitor is switched from a first load to a second load, for discharging the charges stored in the capacitor according to the monitoring result by a voltage monitoring means so that the voltage of the capacitor decreases to the operating voltage.

A projector has a transmissive spatial light modulator backlit by a collimated illuminator that includes a light source that outputs red, green, blue (RGB) light, and a combiner disposed in light-receiving relation to the light source for mixing or combining the RGB light. The combiner has cavity features associated therewith for outputting collimated light, where such light preferably has a divergent cone angle less than plus or minus fifteen degrees (+/−15°).

The invention discloses an on-line monitoring and instant warning and fault diagnosis system of a wind generating set. The on-line monitoring and instant warning and fault diagnosis system is composed of a lower computer (1) and an upper computer (5), wherein the lower computer (1) is installed on the wind generating set and is in communication with the upper computer (5) through a wired or wireless network. When the on-line monitoring and instant warning and fault diagnosis system works, the upper computer (5) transmits a start instruction to the lower computer (1), and then the lower computer (1) starts to collect signal data, carries out on-line instant warning on abnormalities and faults and stores signals or signal feature information; the upper computer (5) receives and stores the signals uploaded by the lower computer (1) or the signal feature information uploaded by the lower computer (1), analyzes and processes the signals or the signal feature information and generates various report forms according to needs. The on-line monitoring and instant warning and fault diagnosis system can carry out on-line instant warning and trend analysis on the operating state of the wind generating set and carry out forecasting and early warning on the potential faults, and has significant value for reducing sudden faults of the wind generating set, reducing loss caused by standby and the like.

An apparatus and method for improving the longevity of a cooling tube in a fire tube boiler. The apparatus comprises a ferrule inserted within the cooling tube end and an internal overlay, with the ferrule and internal overlay arranged to provide a smooth, continuous, and diverging passage that reduces turbulence for a heated fluid flowing therethrough, thus preventing the overheating of the tube wall in the highly turbulent area. The internal overlay may be a weld overlay of a corrosion-resistant material that is deposited in a band about the inner wall of the cooling tube, the overlay having an annular inner recess receiving the end of the ferrule. The combination of ferrule and internal overlay also reduces the sharp gradient in temperature that is encountered when the heated fluid enters the relatively cool tube end, thus reducing film boiling, reducing cracking of the tube end, and enhancing corrosion resistance.

The present invention relates to the field of computers, especially the embedded network intelligent information processing server, including server shells, Reciprocating screws, screw nut, rotary purifier installed in the server shell, with the cooperation of the reciprocating screw and the screw nut, As that rotary purify device reciprocates upward and downward in the inn seat of the server housing and also rotates, A blow nozzle is arranged on the rotary purification device to blow up the dust inside the server, A suction chamber is also provided for that rotate purification device, atomizing chamber and drying chamber, the air with dust and heat inside the server is sucked away and cooled by atomizing dust removal, filtration and centrifugal drying, The treated air is discharged out ofthe server through the pipeline, and plays the role of dust removal and temperature reduction for the server. At the same time, the air treated by the rotary purification device contains certain moisture, which can be circulated to the inside of the server to increase the humidity, and plays the role of eliminating static electricity, thus greatly prolonging the service life of the server and reducing the maintenance difficulty of the server.

The invention discloses a detection method of an early fault of a cable based on complex wavelet singularity detection. The method mainly comprises the following steps of: acquiring a current signal of a cable to be detected in a power distribution network, and performing N-layer discrete wavelet transform on the current signal by using complex wavelets to obtain a wavelet transform coefficient on each decomposition level; and extracting amplitude information of a wavelet coefficient on each decomposition level, tracking the modulus maximum of the wavelet coefficient on each decomposition level, and recording a point on which the modulus maximum occurs in each decomposition level, wherein the corresponding occurrence moment of a first recorded modulus maximum point is the occurrence moment of an early fault, and the corresponding occurrence moment of a last recorded modulus maximum point is the ending moment of the early fault. According to the method disclosed by the invention, the early fault of the cable can be detected effectively, so that a defective cable can be pre-warned; and measures are adopted before the occurrence of the fault, and therefore losses caused by a permanent fault are reduced greatly, the running safety of a power grid is enhanced, and the running service life of the cable is prolonged.

The invention relates to a block type end plate structure of a PEMFC (Proton Exchange Membrane Fuel Cell). The structure comprises an insulating motherboard and n sub collector blocks (n is a positive integer equal to or larger than 2); grooves are formed on the insulating motherboard, the sub collector blocks are embedded in the grooves on the insulating motherboard, and after the surface on oneside of the insulating motherboard, on which the sub collector blocks are embedded, is integrally flatten-milled, a normal reaction gas flow field is curved; conductive metal collector bars vertically penetrating through the insulating motherboard are arranged on the sub collector blocks; one end of each collector bar penetrating through the insulating motherboard is connected with a current output conducting wire of the PEMFC; and a current mutual induction element is arranged on the conducting wire. Compared with the prior art, the invention has the distinguished advantage that the cell temperature can be flexibly controlled through circulating water, and the flow field is curved after tensioning and flatten-milling are performed, so that a similarity to a normal flow field plate is guaranteed. Anyhow, the design of the end plate realizes the blocking structure while a flow field plate, a cooling plate and a collector plate are integrated, and is a novel block type end plate structure for measuring current distribution.

The invention provides a charging pile fault prediction method and device based on a Markov chain, and the method comprises: obtaining a state vector of a target charging pile in an initial time period, and enabling the state vector to serve as the initial state probability distribution of a preset charging pile Markov chain prediction model; wherein the Markov chain prediction model of the charging pile is used for representing a discrete event random process in which a non-fault state and at least one fault state of the charging pile are mutually converted and different fault states of the charging pile are mutually converted; and according to the initial state probability distribution and the Markov chain prediction model, determining the probability that the target charging pile has atleast one fault in a prediction time period. Automatic fault prediction of the charging pile can be achieved, the prediction process is efficient, the prediction result is accurate, and then timely and targeted maintenance can be conducted on the fault of the charging pile.