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42results about How to "Guaranteed design life" patented technology
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Assembly type roof drainage system and construction method
InactiveCN106968404ARealize absorption and utilizationImprove waterproof performanceBuild-up roofsRoof drainageArchitectural engineeringWater repellent
The invention belongs to the field of roof water prevention and particularly relates to an assembly type roof drainage system and a construction method. The assembly type roof drainage system comprises a drainage assembly and a waterproof layer, wherein the drainage assembly and a roof are arranged together, and the waterproof layer and drainage pipes are arranged together. The waterproof layer comprises an impermeable layer arranged on the roof. The impermeable layer is sequentially provided with a coiled material waterproof layer, a heat preservation layer and a liner waterproof layer. The drainage assembly comprises an upper drainage pipe provided with an upper water inlet and a lower drainage pipe arranged on the periphery of the upper drainage pipe. A gap is reserved between the upper drainage pipe and the lower drainage pipe and forms a lower water inlet. The upper water inlet and the liner waterproof layer are arranged together, and the lower water inlet and the coiled material waterproof layer are arranged together.
Owner:BEIJING ORIENTAL YUHONG WATERPROOF ENG
Online monitored, prejudged and controlled medicine adding system of central air-conditioning water system and application thereof
ActiveCN103912955AEasy to addReduce wasteSpace heating and ventilation safety systemsLighting and heating apparatusMedicineTemperature monitoring
The invention discloses an online monitored, prejudged and controlled medicine adding system of a central air-conditioning water system and an application of the medicine adding system. The medicine adding system comprises a water supplement and pollution discharge monitoring unit, a water inlet and outlet temperature monitoring unit, a medicine concentration monitoring unit, a pH value monitoring unit, a conductivity monitoring unit, a medicine adding unit, an automatic discharging unit, a command receiving unit and a control unit. According to the medicine adding system, the problems that the medicine concentration of circulating cooling water overshoots and greatly fluctuates when the medicine is added by using a traditional system are solved, the waste of the medicine is reduced, and the operating cost is lowered.
Owner:SHANGHAI EMPEROR OF CLEANING HI TECH
Self-potential roller-type cross wedge rolling mill
InactiveCN101722186AWith self-adjusting functionGuaranteed design lifeMetal rolling stand detailsRolling mill drivesEngineeringPre stress
The invention discloses a self-potential roll-type cross wedge rolling mill, comprising a rack, an upper roll, a lower roll and a driving device used for driving the upper roll to move up and down. Upper bearing blocks are arranged at the two ends of the upper roll and lower bearing blocks are arranged at the two ends of the lower roll. Prestressed supports are fixedly arranged at the upper ends of the lower bearing blocks. Adjusting levers are connected on the prestressed supports by bolts. The cross wedge rolling mill is characterized in that a first self-potential adjusting device is arranged between the lower ends of the lower bearing blocks and the rack; a second self-potential adjusting device is arranged between the adjusting levers and the lower end faces of the upper bearing blocks; a third self-potential adjusting device is arranged between the upper end faces of the upper bearing blocks and the driving device; and axial self-potential adjusting devices with the same structure are arranged between the sides, positioned at the operating sides, of the upper bearing blocks and the rack as well as between the sides, positioned at the operating sides, of the lower bearing blocks and the rack. The invention has the following advantages: the bearing load is uniform when the rolling mill works, the design life of the bearing is ensured, the inner organizations of the rolled pieces are uniform, the rolling precision and the product quality are improved and scale production of the shaft parts by cross wedge rolling is realized.
Owner:NINGBO UNIV
Vehicular emergency drinking water purifying station
InactiveCN103073122AGuaranteed uptimeSufficient coagulation reaction timeMultistage water/sewage treatmentPotable waterPre treatment
The invention relates to the field of waste water treatment, in particular to a vehicular emergency drinking water purifying station. The purifying station is composed of a pre-treating unit, an integrated membrane treating unit, a sterilization and disinfection unit and a water source outward transporting unit; and the four units are orderly connected by pipelines and mounted in a vehicular box body. The vehicular emergency drinking water purifying station is low in requirements on raw water quality and simple in treatment process.
Owner:SCIMEE TECH & SCI CO LTD
Fastener plug-in type curved surface metal roof and construction method thereof
ActiveCN103711258ASolve the odd-shaped surface problemGuaranteed free expansionRoof covering using slabs/sheetsBuilding material handlingArchitectural engineeringMetal roof
The invention provides a fastener plug-in type curved surface metal roof which comprises a base frame, primary purline supporting components, lengthening connecting fasteners, primary purlines, primary and secondary purline through connection components, secondary purlines, secondary purline panel through connection components, roof panel components and sealing components. The base frame is fixedly mounted on a civil engineering foundation roof face. The primary purlines are fixedly connected with the base frame through the primary purline supporting components. The secondary purlines are connected with the primary purlines through the primary and secondary purline through connection components. The secondary purline panel through connection components are connected with the secondary purlines. The roof panel components are connected with the secondary purline panel through connection components, two adjacent roof panel components are connected in an inserting mode, and the sealing components are arranged in the clearances of the roof panel components. A construction method mainly comprises the step that the base frame, the primary purline supporting components, the primary purlines, the primary and secondary purline through connection components, the secondary purlines, the secondary purline panel through connection components, the roof panel components and the sealing components are mounted in sequence. According to the fastener plug-in type curved surface metal roof and the construction method, steel and manpower cost can be effectively saved, the construction period can be shortened, and the new construction method of the curved surface metal roof is provided.
Owner:CHANGZHOU NO 1 CONSTR GRP
Laser wire-filling welding method for nuclear main pump shield sleeve
ActiveCN105880833AReduced precision requirementsStrong gap toleranceLaser beam welding apparatusNuclear powerEngineering
The invention discloses a laser wire-filling welding method for a nuclear main pump shield sleeve, and belongs to the field of nuclear power. A laser wire-filling welding system performs pulse laser wire-filling welding on the shield sleeve; a thin plate is precisely cut, wound and clamped on a special welding tool, wherein a connection gap is enabled to be 0 to 0.55 mm; a front-mounting wire feeding mode is selected to accurately adjust a welding wire feeding position, wherein a certain welding wire height and filament distance are kept; optimized welding process parameters are selected, to realize laser wire-filling welding for longitudinal joints of the nuclear main pump shield sleeve by controlling accurate and automatic continuous movement of a pulse laser welding head and a wire feeding nozzle. The laser wire-filling welding method can guarantee small welding deformation of the shield sleeve and high diameter size precision, and furthermore, crystalline grains in welding lines are obviously thinned, and the influence on the physical and mechanical properties of a material is low; in the welding process, by the adding of a welding wire, the accuracy requirement on thin plate cutting is reduced, and the welding line has certain sine and cosine heights; therefore, the strength of the welding line is enhanced, and the service life of the shield sleeve is prolonged.
Owner:DALIAN UNIV OF TECH
Intensity checking method of overlaying valve plates of compression valve of vehicle buffer
InactiveCN103161871AGuaranteed design lifeReduce test costsSpringsShock absorbersEngineeringStructural engineering
The invention relates to an intensity checking method of overlaying valve plates of a compression valve of a vehicle buffer, and belongs to the technical field of hydraulic buffers. At present, a reliable calculation method for checking the maximum stress and intensity of the overlaying valve plates of the compression valve is not given at home and aboard, the checking is conducted through numerical simulation by finite element software most of the time, and therefore modern design requirements of the buffers can not be satisfied. The intensity checking method is characterized in that checking of the intensity of the overlaying valve plates of the compression valve is conducted according to the thicknesses, the number of pieces, the allowable stress and the maximum stress of the overlaying valve plates of the compression valve. According to the intensity checking method, not only influences of normal open holes of a rebuilt valve, piston gaps and a circulation valve are considered, but also the stress condition of actual non uniform pressure is considered. The intensity checking method of the overlaying valve plates of the compression valve of the vehicle buffer is capable of calculating the maximum stress of the overlaying valve plates of the compression valve accurately, checking the intensity reliably, guaranteeing the design service life of the buffer, reducing maintenance cost, avoiding repeated testing and modification, reducing the cost of designing and testing, and shortening the development cycle.
Owner:SHANDONG UNIV OF TECH
Maintenance-free sleeve compensator
InactiveCN104633363AReduce wearGuaranteed design lifePipeline expansion-compensationAdjustable jointsEngineeringThermal water
The invention relates to a maintenance-free sleeve compensator for compensating the thermal expansion and chilling shrinkage of a hot water pipeline. The maintenance-free sleeve compensator comprises an outer pipe (1) and an inner pipe (4), wherein the left end of the inner pipe stretches into a pipe body (2) of the outer pipe, and a sealing sleeve (6) is sheathed on the inner pipe. The maintenance-free sleeve compensator is characterized in that the sealing sleeve is made of a silicone rubber material, one end of the sealing sleeve is connected at the left end of the inner pipe by a tightening device in a sealing manner, a clearance is left between the outer wall of the sealing sleeve and the pipe body of the outer pipe, and a loop body (8) extending from the other end of the sealing sleeve radially is connected to a flange (3) at the right end of the outer pipe. The maintenance-free sleeve compensator has the characteristics that two ends of the sealing sleeve are fixedly connected with the outer pipe and the inner pipe in a sealing manner respectively, so that when the inner pipe and the outer pipe move oppositely, the middle part of the sealing sleeve is abraded, two connecting ends of the sealing sleeve cannot be abraded, and after the middle part of the sealing sleeve is abraded, the sealing property of the sleeve compensator can be still kept; and compared with the maintenance-free sleeve compensator in the prior art, the maintenance-free sleeve compensator is maintenance-free in sealing property within a service life.
Owner:高玉琴
High-power long-life valve-controlled sealed lead-acid storage battery for data center
ActiveCN104377366AGuaranteed design lifeSuppress short circuitFinal product manufactureElectrode carriers/collectorsPorosityApparent density
The invention provides a valve-controlled sealed lead-acid storage battery capable of meeting the demand of development of a large scale data center at present and satisfying the use of high power discharge with a long floating charge cycle life. In the valve-controlled sealed lead-acid storage battery disclosed by the invention, the longitudinal ribs of the grid mesh thereof are radially distributed, and the tab is in the middle. The interval between the longitudinal ribs is 0.7-0.8 time that of the transverse ribs, and the plate grid is formed by using a high-tin low-calcium alloy with tin content of 1.2-2 w% and calcium content of 0.04-0.05 w%; the apparent density of the positive lead paste formula is 4-4.1 g / cm<3>, the apparent density of the negative lead paste formula is 4.4-4.5 g / cm<3>; the positive plate gamma value is 0.70-0.80, an organic fibrous material is added to the separator, the separator has the base weight of 163-176 g / m<2>.mm at 10kPa, the separator has the porosity of 93-94%; the electrolyte acid density is 1.30-1.31 g / cm<3>.
Owner:ZHEJIANG NARADA POWER SOURCE CO LTD +1
Self-potential roller-type cross wedge rolling mill
InactiveCN101722186BWith self-adjusting functionGuaranteed design lifeMetal rolling stand detailsRolling mill drivesPre stressEngineering
The invention discloses a self-potential roll-type cross wedge rolling mill, comprising a rack, an upper roll, a lower roll and a driving device used for driving the upper roll to move up and down. Upper bearing blocks are arranged at the two ends of the upper roll and lower bearing blocks are arranged at the two ends of the lower roll. Prestressed supports are fixedly arranged at the upper ends of the lower bearing blocks. Adjusting levers are connected on the prestressed supports by bolts. The cross wedge rolling mill is characterized in that a first self-potential adjusting device is arranged between the lower ends of the lower bearing blocks and the rack; a second self-potential adjusting device is arranged between the adjusting levers and the lower end faces of the upper bearing blocks; a third self-potential adjusting device is arranged between the upper end faces of the upper bearing blocks and the driving device; and axial self-potential adjusting devices with the same structure are arranged between the sides, positioned at the operating sides, of the upper bearing blocks and the rack as well as between the sides, positioned at the operating sides, of the lower bearing blocks and the rack. The invention has the following advantages: the bearing load is uniform when the rolling mill works, the design life of the bearing is ensured, the inner organizations of the rolled pieces are uniform, the rolling precision and the product quality are improved and scale production of the shaft parts by cross wedge rolling is realized.
Owner:NINGBO UNIV
LED (Light-Emitting Diode) heat dissipation base plate, LED packaging structure, and manufacturing method of LED heat dissipation base plate and LED packaging structure
ActiveCN102403413AExtended service lifeSimple structureSolid-state devicesSemiconductor devicesElectrical conductorEngineering
The invention discloses an LED (Light-Emitting Diode) heat dissipation base plate, an LED packaging structure and a manufacturing method of the LED heat dissipation base plate and the LED packaging structure. An SOI (Silicon-On-Insulator) wafer or a monocrystalline silicon wafer is taken as a substrate. The heat dissipation base plate taking the SOI wafer as the substrate comprises an upper layermade of silicon materials, an etching stopping layer made of silicon dioxide materials and a bottom layer made of the silicon materials, wherein the upper layer comprises a silicon cup formed by etching; the etching stopping layer is positioned in the SOI wafer below the upper layer; and the bottom layer comprises at least two guide holes formed by etching. The heat dissipation base plate taking the monocrystalline silicon wafer as the substrate comprises a silicon cup, at least two guide holes and metal conductors, wherein the silicon cup is formed by etching on a first surface; the guide holes are formed by etching on a second surface; and the metal conductors are filled in the guide holes. The invention has the beneficial effects that a silicon-manufactured base plate is adopted to replace the existing various ceramic heat dissipation base plates; the structure is simple; not only can the purpose of highly-efficient heat dissipation be achieved, but also the basic production cost can be greatly reduced; and meanwhile, as the thermal expansion coefficient of a silicon is close to that of an LED chip substrate, the service life of an LED chip is facilitated to be prolonged.
Owner:常州精睿新能源汽车技术有限公司
Self-alignment roll system of cross wedge rolling mill
InactiveCN101716603AWith self-adjusting functionGuaranteed design lifeMetal rolling stand detailsMetal rolling arrangementsPre stressEngineering
The invention discloses a self-alignment roll system of a cross wedge rolling mill, comprising a stand, an upper bearing seat, a roll and bearing seats arranged on both ends of the roll, wherein the upper ends of the bearing seats are fixedly provided with prestressing supports on which regulating rods are screwed. The self-alignment roll system of the cross wedge rolling mill is characterized in that a lower self-alignment regulating device is arranged between the lower ends of the bearing seats and the stand, an upper self-alignment regulating device is arranged between the regulating rods and the upper bearing seat, wherein an axial self-alignment regulating device is arranged between the side surface of the bearing seat positioned on the operation side and the stand. The invention has the advantages that because the self-alignment regulating devices are arranged on the roll system, the roll system has the function of self-alignment regulation so as to ensure that the roll system has uniform bearing load when working and ensure the designing service life of bearings, the rolled pieces rolled by the roll system have uniform internal tissues, and the rolling precision and the product quality are improved, and the scale production of cross wedge rolling of long-shaft parts is realized.
Owner:NINGBO UNIV
Large hydraulic damper for supporting nuclear power station main device
InactiveCN105065529AExquisite appearanceAvoid damageSpringsLiquid based dampersForeign matterNuclear power
The invention provides a large hydraulic damper for supporting a nuclear power station main device. The large hydraulic damper for supporting the nuclear power station main device comprises a shell assembly, an oil cylinder, a piston or a piston rod, auxiliary oil cylinders, a fork-shaped pin head and a rear cylinder cover, wherein the shell assembly is provided with a containing cavity; the oil cylinder is contained in the containing cavity; the oil cylinder comprises a front cover plate and a rear cover plate which are connected through screws or bolts, and a gap is reserved between the front cover plate and the rear cover plate. The piston or the piston rod penetrates through the front cover plate, one end of the piston or the piston rod is contained in the gap, and the other end of the piston or the piston rod penetrates through the front cover plate and is located outside the gap. The auxiliary oil cylinders are symmetrically distributed on the periphery of the oil cylinder. The rear cylinder cover is installed on the shell assembly and provided with a joint bearing which is installed on the rear cylinder cover through a bearing pressing plate. The large hydraulic damper for supporting the nuclear power station main device can effectively prevent damage, caused by collision of external foreign matter, to main parts of the damper.
Owner:SHANGHAI NUCLEAR ENG RES & DESIGN INST CO LTD +1
Light emitting diode (LED) lamp panel packaging structure and method thereof
ActiveCN102738137AImprove efficiencyGuaranteed design lifeSolid-state devicesSemiconductor devicesEngineeringLED lamp
The invention provides a light emitting diode (LED) lamp panel packaging structure and a driving method thereof. An LED lamp panel comprises a packaging substrate and a plurality of LED chips arranged on the packaging substrate; the chips are divided into a plurality of groups; the groups of chips are serially connected through gold wires; inputting pins of the groups of chips are jointly connected to a conductive trace; outputting pins of the groups of chips are jointly connected to another conductive trace; the conductive trace connected with the inputting pins and the conductive trace connected with the outputting pins are jointly connected to a multichannel connector, so that inputs and outputs of the groups of chips correspond to the corresponding channels of the multichannel connector, and the groups of chips are respectively driven independently.
Owner:YANCHENG DONGSHAN PRECISION MANUFACTURING CO LTD
High-power illuminating device assembled by low-power LEDs (Light Emitting Diodes)
InactiveCN102147054AOvercome light decayOvercome brightnessPoint-like light sourceElectric circuit arrangementsPower factorEngineering
The invention provides a high-power illuminating device assembled by low-power LEDs (Light Emitting Diodes). The invention relates to an LED illuminating device which comprises a direct-current constant-voltage power supply, a circuit board for high-density plug-in LEDs and a heat radiation device, wherein the voltage provided by the direct-current constant-voltage power supply is 250 volt, and the current provided is 0.44-1.1 ampere; the connection manner of the LEDs inserted on the circuit board is that a first quantity of LEDs are connected in series to form an LED lamp bank, then a second quantity of LEDs are connected in parallel to form a whole LED lamp module circuit, wherein the first quantity of LEDs has to meet the condition that the voltage sum of the first quantity of serially-connected LEDs is equivalent to 250 volt; and the second quantity of LEDs is determined according to the total power required by the LED illuminating device. The high-power illuminating device overcomes a series of defects that a high-power LED street lamp has quick light decay, insufficient brightness and high price, is easy to damage and the like and has the advantages of high brightens, high reliability and reasonable cost, and the power factor is kept within the scope of 0.95-0.98.
Owner:丁德培
Ice load operation optimization control system and method used in wind turbine generator system (WTGS)
ActiveCN102410140BImprove securityAvoid damageWind motor controlMachines/enginesRisk levelElectricity
The invention discloses an ice load operation optimization control system and method used in a wind turbine generator system (WTGS). The system comprises a meteorological condition detection module, an icing risk level calculation module and an ice load operation optimization control module, wherein meteorological condition signals detected by the meteorological condition detection module are input into the icing risk level calculation module; icing risk level signals calculated by the icing risk level calculation module according to the meteorological condition signals are input into the ice load operation optimization control module; and the ice load operation optimization control module outputs variable-pitch control signals and torque control signals according to the icing risk level signals. By adopting the ice load operation optimization control system and method used in the WTGS, the WTGS can automatically detect and judge whether blades are iced and detect and judge the icing risk level, and the control strategy during the ice load operation process can be optimized; and different control schemes are formulated according to the icing degree of the blades, thus preventing great fatigue load caused by ice load operation and damage on the blades, improving the safety property of the WTGS, and ensuring the design life of a fan.
Owner:GUODIAN UNITED POWER TECH
Light emitting diode (LED) lamp panel packaging structure and method thereof
ActiveCN102738137BImprove efficiencyGuaranteed design lifeSolid-state devicesSemiconductor devicesEngineeringLED lamp
The invention provides a light emitting diode (LED) lamp panel packaging structure and a driving method thereof. An LED lamp panel comprises a packaging substrate and a plurality of LED chips arranged on the packaging substrate; the chips are divided into a plurality of groups; the groups of chips are serially connected through gold wires; inputting pins of the groups of chips are jointly connected to a conductive trace; outputting pins of the groups of chips are jointly connected to another conductive trace; the conductive trace connected with the inputting pins and the conductive trace connected with the outputting pins are jointly connected to a multichannel connector, so that inputs and outputs of the groups of chips correspond to the corresponding channels of the multichannel connector, and the groups of chips are respectively driven independently.
Owner:YANCHENG DONGSHAN PRECISION MANUFACTURING CO LTD
Method for calculating design pressure of a pipe fitting and a method for determining wall thickness of the pipe fitting
ActiveCN109657308AAvoid wastingGuaranteed design lifeDesign optimisation/simulationSpecial data processing applicationsPipe fittingEngineering
The invention provides a method for calculating design pressure of a pipe fitting and a method for determining the wall thickness of the pipe fitting by calculating the design pressure value of the pipe fitting. the pipe fitting strength needs to be the same as the pipeline strength; the design pressure of the pipe fitting is determined according to the specification and material of the pipeline;according to the pipe fitting code in the pipe fitting ordering list; an external pipeline material connected with the pipe fitting and a pipe meter number are determined; according to the 2.1 ASME B < 16.9 > strip, determining the weld coefficient of the external pipeline; and the design pressure of the pipe fitting is obtained through calculation according to the formula (shown in the specification), and then the thickness of the pipe fitting is further calculated. According to the calculation method, the construction cost is reduced, and the safety of a pipeline system is ensured.
Owner:XINDI ENERGY ENG TECH
A laser welding method for nuclear main pump shielding sleeve
ActiveCN105880833BReduced precision requirementsStrong gap toleranceLaser beam welding apparatusNuclear powerEngineering
The invention discloses a laser wire-filling welding method for a nuclear main pump shield sleeve, and belongs to the field of nuclear power. A laser wire-filling welding system performs pulse laser wire-filling welding on the shield sleeve; a thin plate is precisely cut, wound and clamped on a special welding tool, wherein a connection gap is enabled to be 0 to 0.55 mm; a front-mounting wire feeding mode is selected to accurately adjust a welding wire feeding position, wherein a certain welding wire height and filament distance are kept; optimized welding process parameters are selected, to realize laser wire-filling welding for longitudinal joints of the nuclear main pump shield sleeve by controlling accurate and automatic continuous movement of a pulse laser welding head and a wire feeding nozzle. The laser wire-filling welding method can guarantee small welding deformation of the shield sleeve and high diameter size precision, and furthermore, crystalline grains in welding lines are obviously thinned, and the influence on the physical and mechanical properties of a material is low; in the welding process, by the adding of a welding wire, the accuracy requirement on thin plate cutting is reduced, and the welding line has certain sine and cosine heights; therefore, the strength of the welding line is enhanced, and the service life of the shield sleeve is prolonged.
Owner:DALIAN UNIV OF TECH
Fastener plug-in curved metal roof and its construction method
ActiveCN103711258BSolve the odd-shaped surface problemGuaranteed free expansionRoof covering using slabs/sheetsBuilding material handlingArchitectural engineeringMetal
Owner:CHANGZHOU NO 1 CONSTR GRP
Medium-strength and high-toughness titanium alloy with yield strength of 800MPa for ocean engineering and preparation process of medium-strength and high-toughness titanium alloy
The invention discloses a medium-strength and high-toughness titanium alloy with yield strength of 800MPa for ocean engineering and a preparation process of the medium-strength and high-toughness titanium alloy, and belongs to the technical field of titanium alloys and forming processes of the titanium alloys. The alloy comprises the following chemical components: 4.5 to 5.5 percent of Al, 0.5 to 2.5 percent of Mo, 0.5 to 1.5 percent of Cr, 0.5 to 1.5 percent of V, 0.5 to 1.5 percent of Sn, 1.0 to 3.0 percent of Zr, less than or equal to 0.25 percent of Fe, less than or equal to 0.12 percent of O and the balance of Ti and inevitable impurity elements. Compared with the traditional moderate-strength titanium alloy with the yield strength of 800MPa, the novel alloy provided by the invention has higher room-temperature and low-temperature toughness and stress corrosion resistance. The novel titanium alloy provided by the invention can be used for manufacturing bars, plates, forgings and the like, and is applied to the technical field of ocean engineering such as ships, ocean platforms, marine aviation and the like.
Owner:INST OF METAL RESEARCH - CHINESE ACAD OF SCI
Structure and realization method of an anti-suckback self-radiating lamp
ActiveCN103836467BGuaranteed design lifePrevent negative pressure sucking backPoint-like light sourceLighting heating/cooling arrangementsPositive pressureFuel tank
The invention relates to a self-heat-dissipating type lamp structure preventing sucking back and an achieving method. An auxiliary insulation conduction oil expansion fuel tank and a wire passing seal locking nut are connected to two screw holes in a screwed mode respectively. A power wire connected with a light source driver is connected with power through the wire passing seal locking nut. An insulation conduction oil expansion rubber piece is fixed into a circle of protrusions with internal threads by a locking external thread locking nut of the insulation conduction oil expansion rubber piece so that a middle hole can be sealed. Electrical light source devices are immerged into insulation conduction oil. Air in a lamp body is emptied so that the interior of a cavity of a shell of a lamp can be in a normal pressure state or in a micro positive pressure state due to environmental temperature change and turning on or off of the light source, the phenomenon of air sucking back caused by aging of a sealing piece of the lamp or the poor structural quality of the shell of the lamp due to manufacturing factors or the difference of the density or the temperature difference is effectively avoided, humidity and accumulated water are prevented from entering the shell of the lamp, the moisture-proof problem generally existing in the sealing type illuminating lamp is solved, the insulation conduction oil can transfer heat to the exterior of the lamp body fast and uniformly, and the heat dissipation problem is solved.
Owner:苏州盛泽科技创业园发展有限公司
Construction method for adopting anti-corrosion insulation cable in overhead communication line
InactiveCN101247031BGuaranteed design lifeSolve the hidden danger of infringementSuspension arrangements for electric cablesApparatus for overhead lines/cablesPolymer composite materialsRust
The present invention relates to a construction method adopting the corrosion protecting insulating cable in the overhead communication line, and the invention belongs to the technique field for protecting the overhead communication line. In the method the corrosion-protecting insulating cable is adopted at the three-line intersection for hanging the communication optical cable, and in other areathe common cable is adopted for hanging the optical cable. The corrosion-protecting insulating cable is obtained by assembling the corrosion-protecting insulating cable and the cable sleeved therein,and the oversheath is made of high-molecule composite material and the wall thickness of the oversheath is 1-2mm. The method reliably settles the hidden danger of disoperation of the three-line crossing to the communication line. Not only the construction method is safe, cheap and effective; but also the cable rust can be prevented in order to guarantee the design life of the overhead communication line.
Owner:河北德源管业制造有限公司 +1
Converter system and double-fed wind turbine generator set shutdown method
InactiveCN104979848AReduced need for movementGuaranteed design lifeSingle network parallel feeding arrangementsWind energy generationTransformerTower
The invention discloses a converter system and a double-fed wind turbine generator set shutdown method. The converter system comprises a converter, a stator circuit breaker, a rotator side switch and a network side protection device. Ratios of winding turns of a rotator and a stator of a double-fed generator matched with the converter system are greater than 1; a converter side inverter is connected with the generator rotator winding through the rotator side switch; the network side converter is connected with a stator and rotator branch electrical collecting point; a stator circuit breaker is connected with a generator stator winding and the electrical collecting point; the network side protection device is connected with the network inverter and the electrical collecting point. The double-fed wind turbine generator set comprises a tower drum, a fan, a gearbox, a double-fed generator, a transformer, a variation paddle device, a main controller and the converter system. The shutdown method comprises: disconnecting the rotor side switch when the double-fed generator is normally shut down; and keeping the stator circuit breaker to close. According to the converter system and the double-fed wind turbine generator set shutdown method, the construction cost of the current inverter system and the whole turbine power generator set is reduced, and the system economical efficiency is improved; and the converter system is safe and reliable to operate, and convenient to use.
Owner:SHENZHEN CHANGHAO MECHANICAL & ELECTRICAL
High-power and long-life valve-regulated sealed lead-acid batteries for data centers
ActiveCN104377366BGuaranteed design lifeSuppress short circuitFinal product manufactureElectrode carriers/collectorsLiquid densityData center
Owner:ZHEJIANG NARADA POWER SOURCE CO LTD +1
Self-alignment roll system of cross wedge rolling mill
InactiveCN101716603BWith self-adjusting functionGuaranteed design lifeMetal rolling stand detailsMetal rolling arrangementsPre stressRolling mill
Owner:NINGBO UNIV
LED (Light-Emitting Diode) heat dissipation base plate, LED packaging structure, and manufacturing method of LED heat dissipation base plate and LED packaging structure
ActiveCN102403413BExtended service lifeSimple structureSolid-state devicesSemiconductor devicesElectrical conductorEngineering
The invention discloses an LED (Light-Emitting Diode) heat dissipation base plate, an LED packaging structure and a manufacturing method of the LED heat dissipation base plate and the LED packaging structure. An SOI (Silicon-On-Insulator) wafer or a monocrystalline silicon wafer is taken as a substrate. The heat dissipation base plate taking the SOI wafer as the substrate comprises an upper layer made of silicon materials, an etching stopping layer made of silicon dioxide materials and a bottom layer made of the silicon materials, wherein the upper layer comprises a silicon cup formed by etching; the etching stopping layer is positioned in the SOI wafer below the upper layer; and the bottom layer comprises at least two guide holes formed by etching. The heat dissipation base plate taking the monocrystalline silicon wafer as the substrate comprises a silicon cup, at least two guide holes and metal conductors, wherein the silicon cup is formed by etching on a first surface; the guide holes are formed by etching on a second surface; and the metal conductors are filled in the guide holes. The invention has the beneficial effects that a silicon-manufactured base plate is adopted to replace the existing various ceramic heat dissipation base plates; the structure is simple; not only can the purpose of highly-efficient heat dissipation be achieved, but also the basic production cost can be greatly reduced; and meanwhile, as the thermal expansion coefficient of a silicon is close to that of an LED chip substrate, the service life of an LED chip is facilitated to be prolonged.
Owner:常州精睿新能源汽车技术有限公司
Replaceable shear-resistant energy consumption device for high-speed railway hollow swing pier
ActiveCN114395977AImprove shear resistanceAvoid damageClimate change adaptationBridge structural detailsMechanical engineeringSeismic energy
The invention discloses a replaceable shear-resistant energy consumption device for a high-speed railway hollow swing pier, which is detachably mounted in an inner cavity of the hollow pier, and a plurality of energy consumption components are arranged at the bottom of the inner cavity of the hollow pier in an inclined strut manner, so that the shear-resistant capability of a pier body of the hollow pier can be ensured, and the shear-resistant capability of the pier body of the hollow pier can be improved. The problems that a traditional swing pier bottom energy dissipation device is insufficient in disassembly and installation space, the service life is affected due to environmental erosion when the energy dissipation device is arranged outside the pier bottom and the pier bottom is stressed in a concentrated mode can be solved, and the pier bottom stress area is effectively enlarged. And energy consumption accumulation can be achieved through the arrangement of the multiple dispersion energy consumption components, and the large damage probability caused by the fact that a large energy consumption device is arranged on the hollow pier can be avoided. Under normal use and frequent earthquakes, the pier does not have lift-off swing of a pier bottom interface, and the stress of the pier is the same as that of a traditional pier; under the action of design earthquakes and rare earthquakes, lift-off swing of a pier bottom interface of the pier occurs, and earthquake energy is dissipated through pier body swing and pier bottom energy dissipation components.
Owner:CENT SOUTH UNIV
Elevator button registration system and method
ActiveCN113526274AAchieving equalization of actual lifeReduce the number of operationsElevatorsRegistration systemReal-time computing
The invention discloses an elevator button registration system. The elevator button registration system comprises a button group comprising at least two elevator buttons with the same function attribute; a first judging unit used for judging whether a high-frequency button exists in the button group or not; a detection device used for detecting whether an elevator user approaches the button group or not when the high-frequency button exists in the button group; and a control unit used for automatically setting the button state of the high-frequency button as a registered state and informing the elevator user of the registered state when the detection device detects that the elevator user approaches the button group. The invention further discloses an elevator button registration method. The difference between the operation times of the high-frequency button and the operation times of other buttons can be reduced, and equalization of the actual service life of the elevator button is achieved.
Owner:SHANGHAI MITSUBISHI ELEVATOR CO LTD
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