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191results about How to "Guaranteed distribution" patented technology

Method and system for the quick-speed and safe distribution of file based on P2P

The invention discloses a method for the quick-speed and safe distribution of the file based on the P2P,including that: a, a proclaimed file is in the symmetric encrypting to form an encrypted file before being distributed and transferred, and the encrypted file is made into a seed file, which is placed in the service end and distributed in the P2P way; b, the customer end logins according to the user information, the seed file is selected and downloaded in the P2P way, then the customer is in the identity verification; c, the service end distributes the encryption key of the encrypted file for the certificated customer; d, the customer end obtains the proclaimed file through the symmetric deciphering of the encryption key and the encrypted file. The invention also discloses a system for the quick-speed and safe distribution of the file based on the P2P, comprising a service end and a customer end, wherein the service end comprises a data-base, a seed file list server, a P2P download tracking server and a file uploading server, the customer end comprises a seed file reading module, a P2P downloading module and a deciphering module. The method can satisfy the requirement for safely and quickly distributing and transferring the file under the certain condition.
Owner:ZHEJIANG UNIV

Vehicle-road communication downlink wireless resource distribution algorithm

The invention provides a vehicle-road communication downlink wireless resource distribution system, comprising a business flow input module and a business classifier connected with the business flow input module. The business classifier is used for classifying business flows. The business classifier is connected with a first scheduling module and a second scheduling module. The first scheduling module is used for scheduling real-time business flows in a differentiate manner. The second scheduling module is used for scheduling non-real-time business flows. The first scheduling module is also connected with the second scheduling module, so that the real-time business flows are enabled to have the priority in scheduling. When the real-time business flows are scheduled and wireless resources are surplus, the scheduling of the non-real-time business flows is started. According to the algorithm provided by the invention, channel sensing requirements are met, time delay QoS (Quality of Service) guarantee of the real-time business flow is provided, the priority of business flows related to traffic safety and the fair scheduling of concurrent real-time business flows are both considered, and the balance among the throughput, the fair index and the QoS support is ensured.
Owner:CHANGAN UNIV

Riser spiral-flow type falling-film evaporator for refrigerating air conditioner

The invention discloses a riser spiral-flow type falling-film evaporator for a refrigerating air conditioner. The riser spiral-flow type falling-film evaporator comprises a shell, a refrigerant steam conveying pipe bundle, a falling-film evaporation pipe bundle, a damping hole plate and a spiral baffle plate, wherein the refrigerant steam conveying pipe bundle is arranged in the center in the shell and along the circumferential direction of the inner all of the shell, the falling-film evaporation pipe bundle is surrounded by the refrigerant steam conveying pipe bundle, the refrigerant steam conveying pipe bundle and the falling-film evaporation pipe bundle are both vertically arranged inside the shell, the upper part of an inlet of the falling-film evaporation pipe bundle is horizontally provided with the damping hole plate, the spiral baffle plate is fixed inside the shell and spirally arranged along a vertical direction, and is provided with through holes allowing the refrigerant steam conveying pipe bundle and the falling-film evaporation pipe bundle to pass through, an ejector is arranged between a refrigerant outlet pipe and a refrigerant inlet pipe, the inlet of the falling-film evaporation pipe bundle is provided with a flow guiding nozzle which has an outer diameter smaller than the inner diameter of the falling-film evaporation pipe bundle and is sealed at two ends, and the flow guiding nozzle is provided with a circular ring with three chutes formed along a circumferential direction uniformly. The riser spiral-flow type falling-film evaporator has the characteristics of small heat transfer temperature difference, high heat transfer coefficient, large evaporative power of unit area capable of preventing dry evaporation, low manufacture cost, less liquid holdup, small floor area and high safety.
Owner:XI AN JIAOTONG UNIV

Heat dissipation mechanism for gearbox of wind driven generator

The invention discloses a heat dissipation mechanism for a gearbox of a wind driven generator. A horizontal partition plate is fixedly arranged in an outer case, a water-cooling heat dissipation mechanism is installed at the upper end of the partition plate, a heat dissipation pipe is connected with the water-cooling heat dissipation mechanism, and the heat dissipation pipe extends downwards to the position below the partition plate; and the gear box is located in the middle of the lower end of the outer case, connecting frames are fixedly connected with the lower end of the partition plate, the two connecting frames are located on the two sides of the gear box correspondingly, and the connecting frames are parallel to the side wall, provided with a heat dissipation opening, of the outer case. According to the heat dissipation mechanism, two heat dissipation fans drive air around the gear box to distribution rapidly, low-temperature air dissipates heat of the gear box, the heat dissipation effect on the gear box is improved through air cooling circulation, meanwhile, circulated distribution cooling water in a water cooling heat dissipation mechanism conducts the heat of the gear box, and air cooling and water cooling are carried out synchronously, so that the heat dissipation efficiency and the heat dissipation effect of the gear box are ensured.
Owner:HUANENG NEW ENERGY CO LTD

Device for measuring liquid heat conductivity coefficient based on transient dual-hot-wire method

InactiveCN103175862AEliminate the effects ofPrecise realization of constant temperature environmentMaterial heat developmentWater bathsData acquisition
The invention discloses a device for measuring liquid heat conductivity coefficient based on a transient dual-hot-wire method. The device needs short time for measurement, and can successfully avoid influence of natural conversion on a test result. Hot wires in the device can serve as both heating elements and temperature measuring elements, a complex structure of experimental devices is omitted, meanwhile, a thermal conductivity cell is endowed with a steady water bath temperature environment, and the device has high measurement accuracy. According to the invention, a thermal conductivity cell insulation barrel device, a glass test tube and a hot wire loading device are independently designed. By a series of processes that a low-temperature thermostat bath serves as a temperature controller so as to provide the constant water bath environment, a direct current calibrator serves as a power supply for measurement, a Wheatstone bridge measures the relation between the temperature variation and the resistance, and a data acquisition control unit serves as a data acquisition instrument for the unbalanced voltage of the Wheatstone bridge, the rate of change of the unbalanced voltage along with time is obtained, and sequentially, the liquid heat conductivity coefficient is solved.
Owner:JIANGSU UNIV

Roller type efficient mulberry leaf drying device

The invention discloses a roller type efficient mulberry leaf drying device. The roller type efficient mulberry leaf drying device comprises a base, a roller, a transmission mechanism and an air heater; two stand plates are arranged on the left and right sides of the top of the base; a cross beam is connected to the tops of the stand plates on the two sides; the roller is arranged above the base;a left rotating shaft and a right rotating shaft are respectively connected to the centers of the end surfaces on the two sides of the roller; the right rotating shaft is an extension shaft with a hollow design; a transmission shaft for driving the left rotating shaft to rotate is arranged on the left side of the left rotating shaft; the transmission shaft is provided with a transmission mechanismfor driving the transmission shaft to rotate; the air heater is mounted on the right side of the base; a hot air pipe upwards extends to penetrate through the stand plate on the right side, and extends into the roller in the axis direction of the right rotating shaft; exhaust ports are densely formed in the hot air pipe; and an overturning rod is arranged at the outer periphery of a pipe body ofthe hot air pipe. The mulberry leaf drying device can effectively prevent nutrient loss of mulberry leaves to guarantee no influence on nutritional value of the mulberry leaves, and meanwhile, is uniform in heating of the mulberry leaves and excellent in drying effect to guarantee the quality grade of dried finished products.
Owner:HUNAN NONGYOU SHENGTAI AGRI TECH +1

Water purifying method of uniform flow constructed wetland

The invention discloses a water purifying method of a uniform flow constructed wetland. A constructed wetland is established; a water inlet end is arranged on one wall of the wetland pool, and a water outlet end is arranged on the other wall of the wetland pool; the water inlet end and the water outlet end are respectively provided with a water distributing zone and a water gathering ground, which are filled with cobblestones with a particle size of 30-50mm; a main body filling material zone comprises, from top to bottom: a first layer filter pack filled with a quartz sand filling material with a particle size of 0.1-1 mm, a second layer filter pack filled with a quartz sand filling material with a particle size of 0.1-3mm; a third layer filter pack filled with a quartz sand filling material with a particle size of 1-3 mm; a fourth layer filter pack filled with a quartz sand filling material with a particle size of 1-5 mm; a fifth layer filter pack filled with a quartz sand filling material with a particle size of 3-7 mm; and humidogene emergent aquatic plant plants are planted on top of the first layer filter pack. The invention can be used in treatment of household sewage in cities and towns and industrial wastewater of food processing industry and slaughter industry, etc., so as to avoid current short flow and formation of a dead zone and remove pollutants efficiently.
Owner:恒晟水环境治理股份有限公司

Intelligent regulating type guard fence

The invention discloses an intelligent regulating type guard fence. The intelligent regulating type guard fence comprises a front guard fence body, a radiator, a fan and an electronic control unit, and the electronic control unit is electrically connected with the radiator and the fan. The intelligent regulating type guard fenceis characterized in that the front guard fence body comprises a mounting plate with ventilation holes, and M air guide plates are hinged to one side of the mounting plate; and the M air guide plates are arranged in parallel, wherein M is a natural number larger than 1. The intelligent regulating type guard fence at leastfurther comprises a temperature sensor used for detecting the temperature information of an engine, connection rods chained to the air guide plates, a hydraulic oil cylinder used for driving the connection rods to act, and a magnetic valve set used for controlling the hydraulic cylinder to act, wherein the output terminal of the temperature sensor is electrically connected with the electronic control unit; and the magnetic valve set and the electronic control unit are electrically connected. By means of the intelligent regulating type guard fence, the problems that the air exhaust quantity of a prior engineering vehicle radiator cannot be adjusted as the opening degree of a front guard fence body cannot be actively regulated in real time along with the temperature changes of the engine, and sundries between the front guard fence body and the radiator cannot be removed in time are solved.
Owner:CENT RES INST OF TIANJIN BENEFO MECHANICAL EQUIP GRP CO LTD

Painting device for valve handwheel

The invention relates to the field of valve production, and discloses a painting device for a valve handwheel. The painting device comprises a paint groove; a rack is arranged on the paint groove; a rack is slidably connected onto the rack; a small gear is meshed with the rack; a cross rod is rotatably connected to the rack; a fixed position is arranged on the cross rod; the fixed position is sleeved with an elastic inflation barrel; a vertical pipe is arranged on the rack; a piston which is in clearance fit with the vertical pipe is arranged in the vertical pipe; the inside of the vertical pipe is divided into an upper pipeline and a lower pipeline by the piston; a connection rod is arranged in the upper pipeline; two ends of the connection rods are separately hinged to the rack and the piston; an inflation pipe is connected between a lower end of the lower pipeline and the elastic inflation barrel; a paint inlet pipe is connected with the paint groove; a rotary shaft is rotatably connected into the paint groove; a turbine is fixedly connected to one end of the rotary shaft and is located at a connection opening of the paint inlet pipe and the paint groove; and an elastic belt isconnected between the other end of the rotary shaft and the cross rod. By adopting the painting device, while the handwheel is painted, a through hole of the handwheel is prevented from being paintedwith paint; and machining efficiency of the handwheel is improved.
Owner:CHONGQING QIANYAN MACHINERY CO LTD

Draught fan and air conditioner with draught fan

The invention relates to the technical field of air conditioners, in particular to a draught fan and an air conditioner with the draught fan. The draught fan comprises a rotating body, at least two blades arranged on the rotating body, microhole runners arranged in the blades and communicating with water sources in the blade rotating process, and ventilation holes formed in the force suction facesof the blades and communicating with the microhole runners, wherein the force suction faces of the blades are the faces, of which the peripheral air flow pressure is lower than the atmospheric pressure, of the blades in the rotating process, the ventilation holes are used for introducing the negative pressure into the microhole runners to accelerate vaporization of water in the microhole runners,and the vaporized vapor is sent out through the rotating blades. Due to the fact that the microhole runners are arranged in the blades of the draught fan, due to gravity or centrifugal force generated by blade rotating, feeding of water in the microhole runners in the blades is achieved; and due to the fact that the ventilation holes are formed in the force suction faces of the blades, the ventilation holes are used for introducing the negative pressure into the microhole runners, and therefore vaporization of water in the microhole runners is accelerated, and the moisture content of the airis rapidly increased.
Owner:GREE ELECTRIC APPLIANCES INC

High-wear-resistance graphite steel edging roller of profile steel-rail beam rolling mill and manufacturing method thereof

The invention relates to a high-wear-resistance graphite steel edging roller of a profile steel-rail beam rolling mill and a manufacturing method thereof, and belongs to the technical field of edgingrollers. The manufacturing method mainly comprises the steps of smelting, pouring and heat treatment, wherein inoculation treatment comprises ladle bottom inoculation before tapping, stream inoculation in the tapping process and stream inoculation in the pouring process, the inoculants are Fe-Si particles and Si-Ca particles, and 5-10 Kg of inoculants are added into 1 ton of molten steel; spheroidizing treatment uses a rare-earth ferrosilicon magnesium spheroidizing agent, and the rare-earth ferrosilicon magnesium spheroidizing agent rushes into the molten steel in the tapping process; and after tapping, the molten steel in the ladle is subjected to argon blowing treatment to ensure that the temperature of the molten steel reaches the pouring temperature which is higher than the melting point temperature of the molten steel by more than 50 DEG C, and then pouring is carried out. The high-wear-resistance graphite steel edging roller has high wear resistance, excellent hot crack resistance and accident impact resistance, and can improve the steel adhesion resistance of the edging roller and improve the on-machine period and the rolling efficiency.
Owner:SINOSTEEL XINGTAI MACHINERY & MILL ROLL

Vertical-lifting-type communication equipment for repairing

The invention discloses vertical-lifting-type communication equipment for repairing. The vertical-lifting-type communication equipment comprises a base, a vertical column and a communication box. Thevertical column is arranged into a quadrangular prism shape and provided with a lifting repairing assembly. The lifting repairing assembly comprises guide rails which are vertically arranged on the side faces of the vertical column correspondingly. A movable frame is annularly connected to the four guide rails, is horizontally arranged, and can move in a vertical reciprocating mode along with theguide rails. An annular rectangular bottom plate is horizontally arranged on the outer side face of the movable frame, and the outer side faces of the bottom plate are each upwards provided with an L-shaped connecting plate. A sliding block is arranged at the front end of each connecting plate, and the siding blocks are connected to the corresponding guide rails. The communication box comprises aninner box body and an outer box body, and a heat dissipating interlayer is formed between the inner box body and the outer box body. Ventilating holes are formed in the lower portions of the side faces of the outer box body, and heat dissipating holes are formed in the upper portions of the side faces and the top of the inner box body. The vertical-lifting-type communication equipment has the advantages of being reasonable in design, good in safety, capable of reducing manpower movement, convenient to repair and maintain, rapid in repairing and maintaining and the like.
Owner:U COM TELECOM EQUIP CO LTD

Machining device and method for steel channel grooving and bending combined assembly

The invention discloses a machining device and method for a steel channel grooving and bending combined assembly and belongs to the technical field of shearing and bending machining. The machining device comprises a rectangular groove cutting machining mold, a triangular groove cutting machining mold and a bending machining mold, wherein the rectangular groove cutting machining mold comprises a first movable cutter and a first fixed cutter; the first movable cutter is fixedly connected with a first movable cutter base, and the shearing edge face of the first movable cutter is a V-shaped face with the middle portion sunken downwards; the first fixed cutter is installed on a first fixed cutter base and forms a "rightward-right-angle-u-shaped" structure; the triangular groove cutting machining mold comprises a second fixed cutter and a second movable cutter; the second movable cutter is fixedly connected with a second movable cutter base; the shearing edge face of the second movable cutter is a plane inclined to the other side from the position of a sharp corner of the plane; and the second fixed cutter is installed on a second fixed cutter base and forms an "L-shaped" structure. By adopting the machining device to perform grooving and bending machining on steel channels, the machining efficiency and the machining quality can be remarkably improved, and the precision and the quality of the combined assembly are made to meet the using requirements.
Owner:马鞍山市欧姆科技发展有限公司
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