45 results about "Fill power" patented technology

The invention provides a method aiming at the overall consideration and complexity of an uplink in a synergetic OFDM (orthogonal frequency division multiplexing) system for the resource allocation in a synergetic OFDM system. The method is characterized in that relays with the number thereof being a positive integer are arranged between a subscriber and a base station and each relay is provided with a plurality of subcarriers with the number being identical with that of the relays. The method comprises the following steps: firstly, the base station selects a relay according to the minimum equivalent signal-to-noise ratios of the subcarriers in each relay, that is, the base station selects the relay with the maximal equivalent signal-to-noise ratio of the subcarriers from the relays with the minimal equivalent signal-to-noise ratio of the subcarriers as the relay node for the subsequent synergetic transmission; then, the selected relay sequences the subcarriers between the subscriber and the selected relay and between the subscriber and the base station sequentially pair the subcarriers, namely, the subcarriers of the relay with high signal-to-noise ratio are used for transmitting the data supposed to be transmitted by the subcarriers of the subscriber with high signal-to-noise ratio; and finally, the base station carries out the water-filling power allocation on each intra-subcarrier according to the equivalent channel gain of each subcarrier pair, and starts the synergetic transmission.

Provided is a method for adaptive transmit power allocation in a multiuser OFDM system. The method includes: a) obtaining a channel gain for a predetermined bit period for each user at a predetermined time, and allocating all of available sub carriers to a user farthest separated among a plurality of users having a good channel gain; b) comparing a channel gain of the user allocated with the subcarrier at the step a) with an initial threshold value; c) allocating a transmit power uniformly to each of the sub carries allocated at the step a) using an Equal-power allocation algorithm if the channel gain is larger than the initial threshold value at the step b); and d) allocating a transmit power to each of the sub carriers allocated at the step a) using a water-filling power allocation algorithm if the channel gain is smaller than the initial threshold value at the step b).

The invention discloses a preparation method for polycrystalline silicon groove grid and capable of avoiding holes. The preparation method comprises the following steps of (1) defining a deep groove with dry plasma etching on a silicon base, (2) growing grid oxidation film on an entire silicon slice, (3) depositing polycrystalline silicon on the grid oxidation film, (4) coating and exposing photoresist by using deep groove etching layout, (5) etching the polycrystalline silicon in the deep groove and enabling the cavity to be exposed and to form a slope morphology through the dry etching procedure which produces high by-product polymer, (6) removing the photoresist, (7) dry back etching the polycrystalline silicon in a dry and return method and enabling the polycrystalline silicon to be formed as a V-shaped morphology, and (8) depositing the polycrystalline silicon a second time to fill the deep groove. The method can improve the filling power of the polycrystalline silicon groove grid and avoid the forming of cavities in filling polycrystalline silicon in the deep groove, and further improve the reliability of a component.

The invention discloses a clearing, crushing and compressing device for fallen leaves. The device comprises a gasoline engine, a filtering sieve net, a sector plate, a feeding port, a belt and belt wheel driver, a crushing box, a discharging port, a compressing carriage, a tractor and a tier, wherein the gasoline engine is used for providing power, and the sector plate is driven to rotate through the belt and belt wheel driver; central negative pressure is generated by the heavy sector plate with special shape during rotating, thus suction power can be generated to suck fallen leaves through the feeding port; the fallen leaves are crushed in the crushing box and then thrown out by the filtering sieve net through centrifugal airflow generated by the sector plate in rotating; materials blown out from the discharging port are conveyed at high speed to the compressing carriage through a conveying pipeline; meanwhile, the high-speed airflow circulates to increase the airflow intensity in the compressing carriage, thus the filling power of the leaves can be decreased, and as a result, the compressing for loading and transporting of the leaves can be achieved, and the volume of loading and transporting is reduced; a main machine part is compact; the maintenance is simple; and the operation cost is decreased.

The invention relates to a full-automatic down feather filling power tester which comprises a machine frame. The machine frame comprises a base frame, a top frame arranged above the base frame and a supporting stand for connecting the base frame and the top frame. A testing barrel with an upward opening is arranged on the base frame and provided with a sample pressing disc capable of vertically and vertically moving in the axis direction, and a stepping servo system driving the sample pressing disc to vertically move is arranged on the top frame. An air blowing and sucking device for blowing and sucking down feather is further arranged on the top frame, and a weighing sensor for bearing the testing barrel is arranged on the base frame. The stepping servo system comprises a stepping motor, a synchronous belt wheel in linkage with the stepping motor and a linear bearing, wherein a stepping belt is connected onto the synchronous belt wheel and the linear bearing, one end of the stepping belt is connected with iron matched with a vertical guide rail in a sliding mode, a hammer is overhung at the other end of the stepping belt and located in the axis direction of the testing barrel, the stepping belt drives the hammer to vertically move in the axis direction of the testing barrel, and the sample pressing disc is hung on the hammer through a rope. The full-automatic down feather filling power tester is high in testing accuracy.

The invention provides a method for monitoring transformer's fault state based on Spiking neural network. The method comprises the following steps: using the characteristic gas method to determine the number of neural elements in the input layer and the output layer of the Spiking neural network and to determine the input sample data; determining the number of neural elements in the hidden layer of the Spiking neural network; normalizing the input sample data; coding the input sample data; and inputting the input sample data to the Spiking neural network to have the data trained; outputting the trained data as the monitoring result for the transformer's fault state. In view of the monitoring problem with the transformer's fault state, the method of the invention uses an oil-filled power transformer as a study object. And the Spiking neural network adopted by the method employs the coding mode of accurate pulse time, which is closer to the real biological neural system and enables it to have a stronger computing ability than other neural networks so as to effectively identify the type of fault, reduce erroneous determination and the erroneous determination rate and provide accuracy for diagnosis.

The invention discloses a pressure automatic filling type throttle valve with low noise. Cavitation is easy to occur in the throttling position when an ordinary throttle valve operates, and is attached to the wall surface of the ordinary throttling valve. In the pressure automatic filling type throttle valve, pressure filling holes are formed on the wall surface of the throttle valve of the invention and connected with an external oil source through a one-way valve; after cavitation occurs, filling power is generated between the local low pressure of the cavitation and the external oil source; oil liquid is filled into a cavitation space through the pressure filling holes, thereby effectively eliminating the cavitation, improving the local low pressure, and further inhibiting the reoccurrence of the cavitation. The throttle valve eliminates the noise, the vibration, the corrosion, etc. brought by the cavitation. The throttle valve has a structure of circumferential openings and non-circumferential openings and arc-shaped and step-shaped transitions are formed between a valve plug shaft and the throttling position of the valve plug. After the cavitation occurs, the pressure is extremely low, and forms the packing pressure with the external low pressure oil source; the packing pressure is self-adaptively filled in the cavitation space, thereby reducing the noise and the vibration of a throttling system and improving the flow control characteristics of the throttling system. The filled liquid oil has a single flow direction, and the low pressure oil source has high control precision, thus ensuring the original flow state of the system.

The invention discloses a dry method of a cigarette tobacco. The dry method of the cigarette tobacco comprises two steps of prefreezing and drying. The prefreezing comprises the following steps: arranging the tobacco in a low temperature environment, and enabling the surface temperature of the tobacco to reach minus 10 to minus 20 DEG C and keep 5 to 10 minutes. The drying comprises the following step: drying the prefreezed tobacco in 40 to 70 DEG C to 12.5-12.8 % of moisture content. The drying temperature is far below 100 DEG C, fragrance of the tobacco can be retained to the largest extent, fluctuation of moisture and temperature of the processed tobacco is reduced, filling power of dried tobacco is notably increased, loss of quantity and quality of the fragrance of the tobacco is reduced, meanwhile, analyzing of the drying step is saved, and large loss of bound water is avoided.

The invention relates to the technical field of hydropower. Water in a reservoir is not used in a water-filling power station, and a single machine can generate 10-15 percent of electric power. Surplus fall at the upstream is shifted to the downstream, which is performed in the following steps: tail water of a water turbine is blocked up by a thinned enclosing wall with lashing wires on the three sides, and the tail water is supplied to an auxiliary engine to generate the electricity. The auxiliary engine is located on a short bridge at the tail end of the enclosing wall. The host engine observes that the tail water is filled, an adjusting valve can be automatically turned on to compensate the surplus fall (limitation on permission of intensity of a tail water chamber) to recover the original flow capacity and the original power so that the power generation power of the auxiliary engine is considerable. When the upstream water level is not high and the surplus fall is not enough, a bottom gate at the tail end of the enclosing wall is opened to discharge, and the host engine automatically generates the electricity while the auxiliary engine stops the operation. The surplus fall is the fall storage to increase water storage capacity in the reservoir. Few units are operated in the less-harvest season to reserve certain storage. The surplus fall cannot take part in electricity generation of the host engine, and the product of the surplus fall and the flow rate represents the surplus power which is lost on the adjusting valve along with the outflow of the water for electricity generation of the water turbine. The invention can change the history that the surplus fall cannot generate the electricity and recycles the power lost on the adjusting valve.

The invention relates to a degradable environment-friendly flocculus material and a preparation method thereof and belongs to the technical field of bedding and clothing filling materials. The degradable environment-friendly flocculus material comprises, by weight, 40-80% of kapok fibers, 12-36% of hollow polylactic acid fibers and 8-24% of polylactic acid sheath core fibers, and is characterized in that the linear density, the length and the melting point of the hollow polylactic acid fibers are 4-10D, 38-76mm and 160-170 DEG C respectively; the linear density, the length, the sheath melting point and the core melting point of the polylactic acid sheath core fibers are 1.5-2D, 38-76mm, 100-135 DEG C and 160-170 DEG C respectively. Reasonable equilibrium points are found out in the aspects such as stereostructure stability, strength, filling power, breathability, breathability warmth, elastic recovery rate, economic rationality and unit weight; since the three raw materials are beneficial and harmless to human health, green and environment friendly and completely degradable and can be embedded or used as compost directly after being discarded, so that the environment is protected beneficially.

The invention discloses a device for online monitoring of dielectric strength of insulating oil of high-voltage oil-filling power equipment. The device comprises a high-voltage direct-current pulse generation device, a testing unit, a voltage-withstanding testing probe, a cleaner and a measurement and control unit, wherein the high-voltage direct-current pulse generation device is used for generating monopole voltage pulse signals, the testing unit comprises a liquid reducing valve and a sealing structure and is used for acquiring the insulating oil to be tested, the voltage-withstanding testing probe as a testing device is arranged in the testing unit and is electrically connected with the high-voltage direct-current pulse generation device, a probe head portion of the voltage-withstanding testing probe is provided with an electrode for generating voltage among insulating clearances of the insulating oil to be tested, the cleaner is connected with the testing unit and used for cleaning the sealing structure and the voltage-withstanding testing probe, and the measurement and control unit is connected with the high-voltage direct-current pulse generation device, the testing unit, the voltage-withstanding testing probe and the cleaner. The device has the advantage that a nondestructive breakdown method based on a high-voltage pulse voltage technology is used for measuring the dielectric strength of the insulating oil of the high-voltage oil-filling power equipment, so that the voltage-withstanding performance of the insulating oil is reflected.

The invention relates to an oil-filled power transformer, belonging to the field of transformer technique. The invention improves the existing oil-filled power transformer structure and is mainly characterized in that each phase of winding of a high-voltage winding consists of an upper independent winding and a lower independent winding; the upper winding and the lower winding are separated into two independent 10KV windings by a cross-over block; by changing the high-voltage winding structure, the mechanical and electric performance of the product is not affected, and wiring can be carried out inside an oil tank; the structure of the invention does not affect the mechanical strength and electric performance of the product; furthermore, during the transitional reconstruction from 10KV power network to 20KV power network, the transformer of the invention has a transition effect; primary side voltages of 10KV transformer and 20KV transformer can be freely switched and the secondary side is not affected; compared with 10KV transformer, the power supply capability is increased, the quality of the voltage is ensured, the power energy dissipation of the power network is reduced, the construction expense of the power network is saved, meanwhile, all functions of 20KV transformer are provided, and the distribution of town power network is complied with more.

A valley-fill circuit with active conduction angle control allows use of a single storage capacitor instead of two. The capacitor is charged to the maximum voltage of the AC cycle, which makes possible use of low-capacitance high-voltage low ESR capacitors, increases energy storage density and decreases circuit footprint. This makes it feasible to use ceramic capacitors, such as a multilayer ceramic (MLCC), polyethylene, polypropylene, or any suitable capacitor type in addition to electrolytic capacitors. This improves the operational longevity and reduces the footprint of the circuitry.

The invention discloses shield tail sealing oil of a shield machine as well as a preparation method and application of the shield tail sealing oil, and solves the problems that the shield tail sealing oil is poor in sealing properties, large in consumption and high in cost. The shield tail sealing oil has the effects of being good in sealing properties, low in consumption and low in cost, and is characterized by consisting of the following components in parts by weight: 14-25 parts of deeply-processed illegal cooking oil, 40-60 parts of filling power, 5-10 parts of a thickening agent, 3-8 parts of fibers, 1-1.5 parts of a mildewproof agent, and 0.5-1.5 parts of a lubricant.

The invention discloses a power soft package lithium battery filling machine, which comprises a conveyer belt, a weighing and code-scanning mechanism, a filling clamp, a vacuum filling cavity and a rotary motion manipulator, wherein the weighing and code-scanning mechanism carries out weighing and code-scanning on a to-be-filled liquid and a filled power soft package lithium battery respectively; the vacuum filling cavity carries out liquid filling on the power soft package lithium battery in the filling clamp; and the rotary motion manipulator carries out rotary motion among the conveyer belt, the weighing and code-scanning mechanism and the filling clamp, so that the power soft package lithium battery moves among the conveyer belt, the weighing and code-scanning mechanism and the filling clamp. The power soft package lithium battery filling machine has the advantages of reduced occupied volume, compact structure and short production line.

An insulation system for a fluid-filled power transformer that allows for operation of the transformer at higher temperatures and with lowered susceptibility to aging. The insulation system includes a plurality of fibers that are bound together by a solid binding agent. The solid binding agent may, for example, for sheaths around the fibers or may be in the form of dispersed particles that bind the fibers to each other. Also, a method of fabricating such an insulation system.

The invention discloses a down feather processing system and process. The down feather processing system has the beneficial technical effect that a down feather filling power detection result can be recorded. The method comprises the following steps of 1, putting down feathers into a down feather box and between two side plates, inserting a marking pen into a sleeve, and screwing a locking screw to fix the pen; 2, starting a second electric push rod to drive two baffles to rotate downwards, so that the baffles do not block the lower ends of two U-shaped frames any more; 3, driving an aluminum plate to slide downwards by the two U-shaped frames under the action of gravity, so that the aluminum plate presses the fluffy down feathers in the down feather box and then bounces upwards; 4, under the action of gravity, making the aluminum plate slide downwards to press the fluffy down feathers in the down feather box and then bounce upwards; and 5, rotating a screw rod to change the distance between the two side plates, so that the volume in the down feather box is changed, down feathers with different weights can be contained, meanwhile, the distance between the two U-shaped frames is changed, aluminum plates with different lengths can be inserted, and the down feathers with the different weights can be matched with the aluminum plates with the corresponding lengths to detect the filling power.

The invention discloses a preparation method of high-filling-power warm-keeping down feather, relates to the technical field of auxiliary devices for warm-keeping down feather preparation, and aims to solve the problem that the service life is greatly shortened due to the fact that the obtained down feather is not good enough in protection when the existing down feather is used. The preparation method comprises the steps of 1, feature-bone separation and dust removal; 2; bleaching and cleaning; 3, stirring and mixing; 4, drying, crushing and neutralizing; 5, vacuum drying and cooling of blank wool; and 6, storing and bagging.

The invention discloses a simple testing method for filling power of bag type down feather. The simple testing method is characterized by after carrying out pretreatment on to-be-tested down feather, uniformly and flatly paving the down feather in a self sealing bag, exhausting air in the bag and sealing, testing the thickness at the moment through a thickness instrument, testing the thickness again after standing until the down feather gets fluffy, and calculating the filling power of the down feather through the thickness difference of twice testing. According to the simple testing method disclosed by the invention, testing can be completed just through the thickness instrument and the self sealing bag, the method is simple, the instrument is small in size, the carrying is convenient, the needed down feather amount is small, and the materials are saved.