75results about How to "Eliminate energy loss" patented technology

A micromechanical resonator device and a micromechanical device utilizing same are disclosed based upon a radially or laterally vibrating disk structure and capable of vibrating at frequencies well past the GHz range. The center of the disk is a nodal point, so when the disk resonator is supported at its center, anchor dissipation to the substrate is minimized, allowing this design to retain high-Q at high frequency. In addition, this design retains high stiffness at high frequencies and so maximizes dynamic range. Furthermore, the sidewall surface area of this disk resonator is often larger than that attainable in previous flexural-mode resonator designs, allowing this disk design to achieve a smaller series motional resistance than its counterparts when using capacitive (or electrostatic) transduction at a given frequency. Capacitive detection is not required in this design, and piezoelectric, magnetostrictive, etc. detection are also possible. The frequency and dynamic range attainable by this resonator makes it applicable to high-Q RF filtering and oscillator applications in a wide variety of communication systems. Its size also makes it particularly suited for portable, wireless applications, where, if used in large numbers, such a resonator can greatly lower the power consumption, increase robustness, and extend the range of application of high performance wireless transceivers.

A cylinder driving system capable of reducing the number of hydraulic devices and the amount of energy loss and an energy regenerating method thereof are provided. To this end, the system includes i) a hydraulic cylinder, ii) a hydraulic pump having three suction / discharge ports of a first port for supplying oil to a bottom chamber of the hydraulic cylinder or draining oil from the bottom chamber, a second port for draining oil from a head chamber of the hydraulic cylinder or supplying oil to the head chamber, and a third port for draining oil from a tank or supplying oil to the tank, the suction rate or the discharge rate in the first port being the sum of the respective discharge rates or suction rates in the second port and the third port, and iii) a driving source for driving the hydraulic pump.

A combustor has a flow sleeve and a flow liner defining a generally axial flow direction of compressor discharge air toward combustor burners. A casing is secured to the forward end of the flow sleeve defining an annular plenum along the interior of the flow sleeve. Openings through the flow sleeve supply compressor discharge air into the plenum where the air changes direction for flow through apertures into and generally coaxially with the free air stream. The axial injection minimizes or eliminates energy losses due to cross flow injection within the axial air stream while continuing to cool the liner.

The invention relates to a modularized data center machine room air conditioning system. The modularized data center machine room air conditioning system comprises an indoor device and an outdoor device, wherein the indoor device comprises a mounting bracket and refrigerating heat exchangers; the mounting bracket is arranged on a machine room floor; the left and right sides of the mounting bracket are oppositely provided with two rows of cabinets face to face or back to back; two rows of refrigerating heat exchangers are arranged in the direction which is the same as the arrangement direction of the cabinets and are oppositely arranged on the mounting bracket respectively; the mounting positions of the refrigerating heat exchangers on the mounting bracket meet that air outlets or air inlets of the refrigerating heat exchangers are directly communicated with air inlets or air outlets of the cabinets or communicated through a common closed passage. According to the modularized data center machine room air conditioning system, after the independent indoor device is arranged, the data center server cabinets can be conveniently combined with the modularized data center machine room air conditioning system to form an air flow cooling circulation system of the server and the indoor device, hot air which comes out from the server enters the indoor refrigerating system through a path which is as short as possible, and the energy loss caused by mixing of cold air and hot air in an indoor air conditioner is eliminated to the greatest extent.

The invention discloses a loader constant and variable hydraulic system based on flow amplifying steering. The loader constant and variable hydraulic system comprises a hydraulic oil tank, a variable pump, a steering gear, a right limiting valve, a left limiting valve, a flow amplifying valve, a left steering cylinder, a right steering cylinder, a flow control valve block, an energy accumulator, a distribution valve, a tipping bucket cylinder, a movable arm cylinder, a pilot valve, an unloading valve block, a constant flow pump, a working mode switching electromagnetic valve and a working mode selector switch. The small-displacement steering gear is adopted to serve as a hydraulic pilot stage of the flow amplifying valve, throttling losses inside a coaxial flow amplifying steering gear in the rapid steering process can be removed, and fuel consumption is reduced; a low-cost home-made element is adopted to replace an inlet element, and steering stability of a variable system is achieved; a feedback signal of the flow amplifying valve is controlled in a time-shared manner, stability of a steering system is improved, and energy consumption is reduced; and meanwhile, the energy-saving effect and good control characteristics of the variable pump can be played out well, and the energy-saving effect and the control precision of a working system are improved.

A combustor has a flow sleeve and a flow liner defining a generally axial flow direction of compressor discharge air toward combustor burners. A casing is secured to the forward end of the flow sleeve defining an annular plenum along the interior of the flow sleeve. Openings through the flow sleeve supply compressor discharge air into the plenum where the air changes direction for flow through apertures into and generally coaxially with the free air stream. The axial injection minimizes or eliminates energy losses due to cross flow injection within the axial air stream while continuing to cool the liner.

A fuel-impermeable membrane for a fuel cell including a nano-film proton exchange membrane (PEM) having an energy loss of less than about 100 mA cm−2 of active surface area, and the energy efficient fuel cell formed therewith, and methods of making same.

The invention discloses an automobile main-reducer tightening clearance-adjusting detecting integrated-table is characterized in that a clamp unit, an elevating-turning unit, a tightening clearance-adjusting unit and a torque detection unit are respectively arranged on a single work table, wherein, the clamp unit is connected with the elevating-turning unit; the torque detection unit is arranged on the lower part of the work table and the elevating-turning unit is arranged on the upper part of the work table; the tightening clearance-adjusting unit is symmetrically arranged on two sides of the work table. The invention integrates the functions of assembling, adjusting and detecting into one table to lead the whole integrating process of the main-reducer to be completed on one apparatus so as to reduce manufacturing cost, save space and provide convenience for assembling process.

The invention relates to a compressed air heat-linkage energy-storage system based on a reversible air engine, which comprises a motor generator, the reversible air engine, an air reservoir and an heat insulation water tank, wherein the motor generator is connected with the reversible air engine by a speed reducer, and the reversible air engine is respectively connected with the air reservoir and the heat insulation water tank. At the valley period of power consumption, compressed air is made and stored in the air reservoir, and the released heat is stored in the water; at the peak period of power consumption, the compressed air is utilized to drive the reversible air engine to generate electricity, and the stored heat water is used for heating the compressed air. The reversible air engine integrates a compressor and an engine into a whole body, adopts the technical schemes of tail gas pressure stabilization and timely cylinder variable, eliminates the energy loss taken away by tail gas and the decompression energy loss during the gas inlet and has high energy conversion efficiency. The system can be used for peak clipping and valley filling and emergency standby of an electric power system and also solve the intermittent bottleneck of wind power generation as well as the development and the utilization of the off-peak electrical power at night.

An LED lamp has dual modes of operation from fluorescent lamp fixtures. A first circuit powers at least one LED in a first mode of operation when first and second power connector pins at a first end of the lamp are inserted into power receptacles of the fixture that are directly connected to power mains. A second circuit powers at least one LED in a second mode of operation when the second power connector pin at the first end of the lamp and a third power connector pin at a second end of the lamp are inserted into power receptacles of a fixture powered from an electronic ballast. First and second conduction control means permit the second circuit to power at least one LED during the second mode of operation.

The invention discloses a single-inductor intelligent photovoltaic method, a control method and a photovoltaic system based on the photovoltaic module. The photovoltaic module comprises photovoltaic battery packs, electronic power switch arm pairs, capacitors, inductors and a maximum power tracing unit, wherein a switching network is formed by parallel connection of each electronic power switch arm pair and each capacitor, each switching network is in parallel connection with two ends of each photovoltaic battery pack, output ends of the switching networks are sequentially in serial connection and then are in serial connection with the unification output inductors, each switching network is provided with a closed control circuit, the maximum power tracing unit collects current and voltage signals output by a photovoltaic optimizer and then transmits the signals to each control circuit of each switching network to guarantee that each photovoltaic battery pack works on the maximum power output point under any external lighting conditions, and output power of a photovoltaic solar system under mismatch lighting conditions is extremely improved.

A DC superconducting coaxial transmission system provides electrical transmission of 5,000 megawatts of energy while simultaneously delivering liquid hydrogen. The transmission system includes a coaxial transmission segment including an inner superconductor, an outer superconductor disposed in surrounding relation to the inner conductor, and a dielectric insulator disposed between the inner superconductor and the outer superconductor. Liquid hydrogen surrounds the superconductors. Three phase transformers and poly phase rectifier / inverters provide a DC voltage source to the superconductors from the electrical grid. In one embodiment, a switching circuit connected between the voltage source and the superconductor injects a cancellation current component into the direct current flow. The cancellation current component is polarized to flow in a direction opposite to the direct current flow to produce a current zero, thus enabling safe interruption of the high DC current while minimizing the magnitude of transient voltages during switching.

The invention relates to a high-temperature superconducting energy storage flywheel system with thermal isolation connection, which is characterized in that a permanent magnetic coupling device is arranged between a motor stator (6) and a high-temperature superconducting magnetic suspension bearing (3) of a flywheel system; the permanent magnetic coupling device consists of a primary coupling device (7) and a secondary coupling device (8); the primary coupling device (7) and the secondary coupling device (8) are oppositely distributed on a rotating shaft (2); the permanent magnetic coupling device is used for transferring torque between a motor and a flywheel and meanwhile isolating heat conduction between the motor and the flywheel so as to prevent causing influence on the stability of the high-temperature superconducting magnetic suspension bearing caused by temperature rise of the motor in the operating process of the flywheel system; the coupling device has two forms: a disc form and a cylinder form; and in order to reduce radiation and thermal leakage of the coupling device, the opposite surfaces of the primary coupling device (7) and the secondary coupling device (8) are silvered or pasted with metal thin films.

The present invention relates to a hypocycloid engine assembly which may be used in internal combustion engines. The engine assembly is able to transfer power from a purely linear reciprocating piston to a purely rotational output shaft, increasing the efficiency and stability of the gear assembly and engine. The engine assembly may also be used in applications converting purely rotational motion to purely linear motion, for example, in air compressors or hydraulic systems.

The invention relates to a microseismic first arrival acquisition method based on shear wave and the Akaike information criterion, belonging to microseismic first arrival automatic extraction method research in an actual seismic exploration environment. For statistical characteristics showed by a micro seismic signal, background noise and the micro seismic signal are viewed as two stationary processes with different statistical properties, shear wave transform is used to decompose and reconstruct the micro seismic signal, at the same time, combined with an AIC model, each layer of reconstructed signal is subjected to first arrival pickup, and finally the pickup result of each layer is integrated to determine seismic two-dimensional first arrival pickup result. According to the method proposed in the invention, the preprocessing of complex background noise is not needed, time and calculation cost are saved, the energy loss of the micro seismic signal in the denoising process is avoided, the amplitude frequency characteristics of an effective signal in a micro seismic two-dimensional record is effectively retained, and an important basis is provided for oil and gas reservoir monitoring, geothermy dynamic monitoring, coal mining and dynamic engineering monitoring.

A method of eliminating vampire energy loss in battery charges is provided. Vampire energy loss occurs when an electronic or mechanical machine consumes energy while not being utilized for the purpose of its existence, for example, energy loss in re-charging consumer electronic devices. By employing the use of an electromechanical switching method that creates a conductive short circuit to the charger after disconnecting the charged target device, the vampire or no load energy loss can be eliminated with or without disconnecting the charger.

A distributed antenna device includes a plurality of transmit antenna elements (12), a plurality of receive antenna elements (30) and a plurality of amplifiers (14, 140). One of the amplifiers (14) is a relatively low power, linear amplifier operatively coupled with each of the transmit antenna elements (12) and mounted closely adjacent to the associated transmit antenna element (12), such that no appreciable power loss occurs between the power amplifier (14) and the associated antenna element (12). At least one of the amplifiers (140) is a low noise amplifier and is built into the distributed antenna device for receiving and amplifying signals from at least one of the receive antenna device for receiving and amplifying signals from at least one of the receive antenna elements (30).

An optical film with a plurality of micro structures which are capable of collecting incident light to the frontal and normalized view angle of the optical film for reducing the chance of incident light returning to light guild plate so as to enhance light collecting efficiency is provided in the present invention. In an embodiment, the optical film is combined with a flat light source so as to form a backlight system. By means of the merit of the optical film, the quantities of the optical film can be reduced so that the backlight system can have characteristics of thin thickness and low production cost.

The invention provides a proton exchange membrane fuel cell hydrogen discharge system capable of being quickly started at a low temperature. The proton exchange membrane fuel cell hydrogen discharge system comprises a hydrogen discharge pipe, a hydrogen discharge valve, a cooling liquid branch and a liquid injection valve, wherein the hydrogen discharge pipe comprises an inlet pipeline and an outlet pipeline which are connected through the hydrogen discharge valve; an air inlet of the inlet pipeline is connected with a fuel cell stack; the inlet pipeline of the hydrogen discharge pipe is connected with the cooling liquid branch through the liquid injection valve; and a cooling liquid can be injected into one end of the cooling liquid branch. Covering protection is carried out on the hydrogen discharge pipe and the hydrogen discharge valve by use of the characteristic of a low solidification point of the cooling liquid of a fuel cell system; pipe blockage and valve body freezing caused by low temperature solidification of a gas and liquid water are avoided; the starting speed of the hydrogen discharge system is significantly improved; meanwhile, the cold starting time of the fuel cell system at the low temperature is shortened; the efficiency of the fuel cell system is improved; and the overall design is simple and easy to implement.

The present invention features a microwave gain medium having a negative refractive index, which overcompensates for loss exhibited in conventional passive metamaterials. The design consists of sub-wavelength building blocks with embedded microwave tunnel diodes exhibiting a negative refractive index and a stable net gain. The negative resistance may also be used for dispersion compensation that may enable broadband response of metamaterials.

An LED lamp has dual modes of operation from fluorescent lamp fixtures. A first circuit powers at least one LED in a first mode of operation when first and second power connector pins at a first end of the lamp are inserted into power receptacles of the fixture that are directly connected to power mains. A second circuit powers at least one LED in a second mode of operation when the second power connector pin at the first end of the lamp and a third power connector pin at a second end of the lamp are inserted into power receptacles of a fixture powered from an electronic ballast. First and second conduction control means permit the second circuit to power at least one LED during the second mode of operation.

The invention discloses a rotary compressor and an exhaust valve. The compressor comprises a closed shell in which a motor and a compression pump are arranged, a compressor crankshaft, and a gas-liquid separator which is communicated with the compression pump through an air inlet elbow, wherein the compression pump comprises an upper flange, a cylinder and a lower flange which are sequentially arranged along the axial direction of the compressor crankshaft; a valve seat countersunk groove is formed in the upper flange; a valve seat and an exhaust port which is communicated with the cylinder are arranged in the valve seat countersunk groove; an exhaust valve capable of closing the exhaust port is arranged on the valve seat; a valve plate fixing hole adjacent to the exhaust port is formed in the valve seat; the exhaust valve comprises a valve, a fixing bolt and a spring positioned between the valve and the fixing bolt; a through hole is formed in the valve plate; the fixing bolt comprises a head part, a limiting part and a fixing part; the fixing part can penetrate through the through hole of the valve plate to be matched with the valve plate fixing hole; the valve plate is arranged on the valve seat; and the valve plate can move up and down along an axis of the fixing bolt. According to the rotary compressor, the strength of the upper flange can be improved, and the exhaust noise and energy loss of the valve plate can be eliminated, so that the performance of the compressor is improved.

An LED lamp has dual modes of operation from fluorescent lamp fixtures. A first circuit powers at least one LED in a first mode of operation when first and second power pins at a first end of the lamp are inserted into power contacts of the fixture that are directly connected to power mains. A second circuit powers at least one LED in a second mode of operation when the second power pin at the first end of the lamp and a third power pin at a second end of the lamp are inserted into power contacts of a fixture powered from an electronic ballast. First and second conduction control means permit the second circuit to power at least one LED during the second mode of operation.

An optical film with a plurality of micro structures which are capable of collecting incident light to the frontal and normalized view angle of the optical film for reducing the chance of incident light returning to light guild plate so as to enhance light collecting efficiency is provided in the present invention. In an embodiment, the optical film is combined with a flat light source so as to form a backlight system. By means of the merit of the optical film, the quantities of the optical film can be reduced so that the backlight system can have characteristics of thin thickness and low production cost.

The invention provides an ultrasonic phased array probe system used in transversal flaw detection in tubular materials or rod materials, comprising: a plurality of phased array probes, wherein the phased array probes are formed into a circular truncated cone surrounding a periphery of the tubular material or the rod material. The axis of the circular truncated cone is coincided with the axis of the tubular material or the rod material. An included angle between each chip on the phased array probes and the axis of the tubular material or the rod material is [alpha], and at the same time, an incidence angle of an acoustic beam generated from each chip to a surface of the tubular material or the rod material is [alpha]. The angle [alpha] is formed at a zone between a first critical angle and a second critical angle, in which only is a transverse wave formed in the tubular material or the rod material. The chips are uniformly distributed on the circular truncated cone. When two phased array probes are employed, a formed central angle of each phased array probe relative to the axis is 180 degrees.

A supporting end is fixedly connected with a pin wheel housing, a sealing ring is installed on the connecting face, the sensor is installed on the supporting end, and the two ends of a crankshaft are supported on the supporting end and an output end through a first standard ball bearing and a second standard ball bearing respectively. A plurality of roller pins are placed in the pin wheel housing, the two cycloidal gears are supported on the eccentric shaft section of the crankshaft through the two sets of first non-standard ball bearings respectively, a certain gap is reserved between the two end faces in the meshing movement process of the two cycloidal gears and the roller pins, the multiple cylindrical pins are fixedly installed at the output end, and a cylindrical pin sleeve is installed outside each cylindrical pin. Each pin sleeve penetrates through the through holes in the two cycloidal gears at the same time and is matched with the through holes, the output end and the pin wheel housing are supported through a second non-standard ball bearing, and a rotary framework oil seal is installed between the output end and the pin wheel housing. The speed reducer has the advantages of being compact in structure, high in transmission efficiency and high in reliability, and the built-in sensor can collect information of temperature and vibration in the speed reducer.

A method is provided for controlling a hydraulic system of a working machine. The hydraulic system includes a hydraulic machine for providing hydraulic fluid to one or more actuators of the working machine. The method includes receiving a signal requesting a pump pressure from the hydraulic machine based on the load pressure of a first actuator of the one or more actuators which first actuator has the highest load pressure of the one or more actuators, discriminating the pressure request from the first actuator provided that the first actuator is stalled due to overload or geometrical limitations, and controlling the hydraulic machine to provide to pump pressure based on the load pressure of a second actuator of the one or more actuators which second actuator is in operation and has the second highest load pressure of the one or more actuators, or, if no actuator in addition to the first actuator is present and in operation, controlling the hydraulic machine to provide a predetermined idle pump pressure.