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58results about How to "Guarantee long-term safe operation" patented technology
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Method for examining and managing thermodynamic system
InactiveCN101540069ADiscover hidden dangers in timePrevent breakdowns and even accidentsChecking time patrolsChecking apparatusReverse orderJob number
The invention relates to a method for examining and managing a thermodynamic system, which comprises the following main steps: scanning information of an examiner, inquiring records of an examining spot, inquiring an examining route, inquiring an examining position and equipment and recording data. Firstly, the information of a job number or a bar code of a working card of the examiner is scanned by a bar code scanner; secondly, the history records of the examining spot are inquired, if no examining spot is found, a prompting message is given, and if the examining spot is found, parameter details are displayed according to a reverse order mode of examining time; thirdly, the examining route is inquired, and the examined examining position is displayed on a display screen; fourthly, the examining position and the equipment are inquired; and finally, a bar code of the examining position is scanned by the bar code scanner to record the data. The invention has simple principle, safe and reliable operation, high degree of automation and wide application range.
Owner:青岛能源热电集团有限公司 +1
Construction method and device for fixing seabed pipeline
InactiveCN1419068AGuarantee long-term safe operationAvoid swingingPipe laying and repairOcean bottomSea waves
The present invention relates to a submerged pipeline fixing contruction method and its equipment. Said method includes the following steps: firstly, prefabricating fixing equipment in plant, transporting it to seaside field and assembling it and fixing pile pipe into one body, shipping and transferring them to place, using floating crane to lift the piling machine, fixing device and fixing pile pipe together and make the fixing pile pipe come into centering guide, and using asdic method to guide the centering guide accurately be in place, using piling machine to drive fixing pile pipe into sea-bed and make fixing equipment be in place and fixing floating part of the pipeline. Said invented equipment includes hydraulic vibration piling machine, pile pipe centering guide, fixing equipment, fixing pile pipe and others.
Owner:中石化石油工程技术服务有限公司
Mixed-coal blending combustion prediction system with post-evaluation system
InactiveCN107316104AReal-time assessment of safe operation levelGuarantee long-term safe operationForecastingResourcesCombustionFeature data
The invention discloses a mixed-coal blending combustion prediction system with a post-evaluation system. During mixed-coal blending combustion of various kinds of coal in a power plant, design parameters, structure features and fuel feature data of the power plant are combined to pre-judging a blending combustion scheme for configuring different kinds of coal and blending combustion proportions for a unit, so burning tests can be reduced, environmental protection and safety risks are avoided and operation economy of the unit is improved. Post-evaluation is performed on the scheme about the mixed-coal blending combustion prediction suggestion through operation data of actual blending combustion to verify whether the scheme is feasible. According to the invention, proper, simple and effective decision technical support is provided for research of mixed coal blending combustion of a target power plant and theoretical and application foundation is laid for the development of the mixed-coal blending combustion technology.
Owner:XIAN TPRI BOILER ENVIRONMENTAL PROTECTION ENG CO LTD
All-backheating drainage system of heat supply network heater for supercritical concurrent boiler thermal power plant
ActiveCN101886804AGuarantee the quality of water supplyGuarantee long-term safe operationFeed water supplyEngineeringHandling system
The invention relates to an all-backheating drainage system of a heat supply network heater for a supercritical concurrent boiler thermal power plant. Condensed water in a condenser passes through a shaft seal cooler of a condensed water system and then enters into a condensed water precision processing device; a drainage water cooling section is arranged in the heat supply network heater, and drainage water in the heat supply network heater is cooled by the drainage water cooling section; the cooled drainage water is boosted by a drainage pump, then passes through a drainage water cooler and exchanges the heat with condensed water from the condensed water precision processing device in the drainage water cooler; the heat-exchanged drainage water and the condensed water from the shaft seal cooler of the condensed water system are mixed to enter the condensed water precision processing device; and the condensed water from the condensed water precision processing device returns to the system after heat exchange, therefore, the desalting of more than 80 percent of a unit steam-water system through a chemical processing system is ensured, the boiler feedwater quality is ensured, and the long-term safety operation of a supercritical concurrent boiler and the heat exchange between the drainage water of the heat supply network heater and the heat supply network are also ensured; and compared with schemes of partially recovering the heat and then discharging the heat to the condenser, the invention improves the efficiency by a larger extent.
Owner:NORTH CHINA POWER ENG
Device and method for treating high-concentration degradation-resistant organic wastewater by supercritical water oxidation process
ActiveCN103693730AExtended service lifeReduce usageWater contaminantsMultistage water/sewage treatmentHigh concentrationSorbent
The invention relates to a device for treating high-concentration degradation-resistant organic wastewater by a supercritical water oxidation process. The device comprises a jacket type reaction kettle (1), a hydraulic device (2), a reaction kettle pressure interlocking control device (3), an adsorbent filling device (4), a compressor (5), a booster pump (6), a warming and heating system (7), a cooler (8), a backpressure control valve (9) and a gas-liquid separator (10). A certain amount of adsorbent (active silicon powder) is added into the organic wastewater, the adsorbent and the organic wastewater are uniformly mixed together by virtue of a stirrer and the mixture enters into a reactor, and grain size of the active silicon powder is very small, so that pipeline blockage is not caused, and inorganic salt produced by reaction in the reactor can be adsorbed; the inorganic salt flows out of the reactor together with a product and then enters a settling tank; separation of the adsorbent and treated liquid is realized in the settling tank by adding a flocculating agent or naturally settling. According to the supercritical device, corrosion on equipment under a supercritical state is reduced and the equipment cost is lowered by virtue of matching of the jacket type reaction kettle and the hydraulic system; meanwhile, the adsorbent is added, so that an equipment blockage problem caused by inorganic salt separation is avoided, and industrialization is easy to realize.
Owner:INNER MONGOLIA UNIV OF TECH
Porcelain insulating surface processing method for electric transmission line
InactiveCN103500621AImprove water repellencyImprove breakdown voltageInsulatorsVulcanizationBreakdown voltage
The invention discloses a porcelain insulating surface processing method for an electric transmission line. The porcelain insulating surface processing method for the electric transmission line comprises the following steps of: spraying one layer of polytetrafluoroethylene material on the porcelain surface of a porcelain insulator; solidifying the porcelain insulator at the high temperature of 200DEG C for 5 minutes; carrying out high-temperature solidification processing on polytetrafluoroethylene coating. According to the porcelain insulating surface processing method for the electric transmission line, which is disclosed by the invention, one layer of polytetrafluoroethylene material is evenly sprayed on the porcelain surface of the porcelain insulator, so that water or dirt is difficult to adhere onto the surface of the polytetrafluoroethylene material, and the problems of dirt accumulation and ice coating can be effectively solved; the insulator combined with the polytetrafluoroethylene has low surface energy, the dirt is difficult to adhere to the insulator, and the porcelain insulating surface hydrophobicity is improved; the breakdown voltage of the polytetrafluoroethylene material is extremely high, the insulation performance is excellent, and the service life of the polytetrafluoroethylene material is equivalent to that of the porcelain insulator. The processing method disclosed by the invention is simple, the power outage re-coating problem of the RTV (room temperature vulcanization) technology is avoided, the ice and dirt prevention performance of the power grid can be greatly improved, the maintenance cost is reduced, and the long-term safe operation of a power grid is guaranteed.
Owner:STATE GRID CORP OF CHINA +1
Apparatus of coal-burning boiler for flue gas desulfurization, denitration, defluorination and dust abatement
InactiveCN101318102ALess investmentSmall footprintDispersed particle separationAir quality improvementEngineeringDust particles
The invention discloses a desulfurizing denitration defluorination dust particle removing device for flue gas in a coal-fired boiler, which comprises a lime water adding device, an automatic control system for catalyst, an automatic filter press and a tank body; the upper part of the tank body is spaced into three reaction chambers and a demisting chamber by a demarcation strip; on the tank body, a flue inlet and a flue outlet are arranged on the tank body; a channel is arranged between the reaction chamber and the demisting chamber; the lower part of the tank body is provided with a reaction fluid storing chamber and a demisting and defluiding chamber; a cycling pump is arranged outside the tank body, and is respectively communicated with nozzles arranged at the top of the reaction chamber by a fluid conveying tube; sewage draining exits are arranged at the lower ends of the reaction liquid storing chamber and the demisting and defluiding chamber; a cycling pool is arranged below the sewage draining exits; a cycling pump is arranged outside the cycling pool and is communicated with the reaction liquid storing chamber and demisting chamber; an oxidation pool is arranged below the cycling pool and is communicated with the filter press; the cycling pump is arranged outside the demisting and defluiding chamber and is communicated with the nozzles arranged above the demisting chamber. The desulfurizing denitration defluorination dust particle removing device can simultaneously desorb four pollutants in flue gas-fume, SO2, NOx and fluoride, and solves the problem that the function is single in the prior art.
Owner:张锡源
Insulator-integrated grounding wire clamp with flip insulated safety cover
ActiveCN102882026AAvoid shakingAvoid erosionCouplings bases/casesElectric connection structural associationsEngineeringGround line
The invention discloses an insulator-integrated grounding wire clamp with a flip insulated safety cover. The top of an insulator is connected with the grounding wire clamp; the top of the insulator and a connecting part between the insulator and the grounding wire clamp are arranged in the insulated safety cover; and the top of the insulated safety cover, which is extended out of the side surface of the grounding wire clamp, is hinged with a flip cover capable of covering the upper surface and the peripheral side surface of the grounding wire clamp. The insulator-integrated grounding wire clamp has the advantages that the insulator is integrally combined with the grounding wire clamp, so that swinging caused by arranging the grounding wire clamp in a suspension mode is prevented, a hook of a grounding bar can be extremely easily hooked into a connecting ring of the grounding wire clamp in the grounding process, and the grounding wire clamp is extremely convenient to operate and is preferably convenient to operate under the windy condition; a connecting part between the grounding wire clamp and a power line is enclosed in the insulated safety cover, and the connecting ring of the grounding wire clamp is covered by the flip cover, so that long-time corrosion of outside rain and snow to the connecting part and the connecting ring is prevented, and long-time safety operation of the power line is ensured; and the possibility of electric leakage of an exposed part is effectively eliminated.
Owner:刘进生
Oil-immersed type high-overload power transformer
ActiveCN104124039AExcellent arc corona resistanceBig room for expansionTransformers/inductances coolingTransformers/inductances casingsTemperature resistancePersonnel safety
An oil-immersed type high-overload power transformer is provided with an open transformer box body. A sealed cover plate is arranged above the box body. A transformer core is arranged in the box body. The oil-immersed type high-overload power transformer is characterized in that organic high-temperature-resisting paint is sprayed on the inner surface and the outer surface of the box body, a sealing cushion made of fluororubber is embedded between an opening edge on the upper portion of the box body and the sealing cover plate, dimethyl silicone oil is arranged in the box body to be used as transformer oil, a cylindrical box body is fixedly arranged on the sealing cover plate of the transformer, a partitioning plate is arranged in the middle of the cylindrical box body, and the partitioning plate divides the whole cylindrical box body into an oil storage box and an expanding box in a partitioning mode. According to the structure, performance is stable, materials has high temperature resistance and corrosion resistance, continuous working time of an oil-immersed transformer under an overload situation is greatly prolonged, meanwhile, the expanding box is added, the problem that inner temperature of the transformer is too high, pressure is increased, and accordingly explosion happens can be avoided, and normal working operation of the transformer and the personnel safety of a using person are guaranteed.
Owner:HUBEI WANGAN TECH
Precise ammonia spraying device and method for thermal power plant denitration SCR reactors
PendingCN110694475ASimple structureExpand the sampling rangeGas treatmentDispersed particle separationProcess engineeringPower station
The invention relates to a precise ammonia spraying device and a method for thermal power plant denitration SCR reactors. The precise ammonia spraying device comprises a flue gas extraction and analysis system and an ammonia spraying grid partitioning system; the flue gas extraction and analysis system comprises a sampler; the sampler is connected with a sampling branch pipe; an analysis branch pipe is derived from the sampling branch pipe and is designed to stretch into an analyzer; an ammonia spraying grid subarea comprises an ammonia spraying main pipe, the ammonia spraying main pipe is divided into ammonia spraying subarea branch pipes, ammonia flowmeters and subarea leveling valves are arranged on the ammonia spraying subarea branch pipes, and the subarea leveling valves are connectedwith bypass subarea leveling valves in parallel; measurement data obtained by the flue gas extraction and analysis system is used for adjusting ammonia spraying grid ammonia spraying amount. According to the precise ammonia spraying device and the method for denitration SCR reactors, the sampling measurement value can represent the average NOX concentration and NOX concentration distribution of the whole section, and the ammonia spraying amount automatically tracked by an SCR system is coincide with the ammonia spraying amount actually needed on site.
Owner:CHINA HUADIAN ENG +1
Connecting method of polyethylene composite tubes of steel wire gauze framework
InactiveCN103216691AGuarantee long-term safe operationEasy to manufactureFlanged jointsWire gauzeUltimate tensile strength
The invention relates to a connecting method of polyethylene composite tubes of a steel wire gauze framework. The method comprises the following steps of: processing a turnup at 90 degrees at the end of a pipeline and adding a metal sleeve on the outer surface at the pipe end; buckling the two integrally; and connecting the turnup at 90 degrees and the metal sleeve by a metal hoop to enhance the strength of the turnup at 90 degrees. In addition, when the pipelines are connected, the metal hoop further has the effect of enhancing the strength of sealing gaskets among the pipe ends, so that the pressure bearing capacity in the connecting part is improved, and the pressure bearing capacity in the connecting part is greater than that of the tube product.
Owner:SHANDONG DONGHONG PIPE IND
Anti-freezing expansion system for catenary strut foundation and preparation process thereof
PendingCN109680705AAvoid the influence of freezing forceFreezing force is not affected byProtective foundationAnti freezingSelf recovery
The invention discloses an anti-freezing expansion system for a catenary strut foundation and a preparation process thereof, and belongs to the technical field of civil engineering. The anti-freezingexpansion system comprises tube bottom sleeves, a frost heaving steel tube, a rolling structure, a strut outer casing pipe, a strut, a flange and a gravel layer, wherein a spring is installed betweena spring joint at the bottom of each tube bottom sleeve and a spring joint at the lower end of the frost heaving steel tube; and the periphery of the springs and the bottom tube sleeves are filled with flexible filling bodies. The anti-freezing expansion system for the catenary strut foundation provided by the invention is reasonable in structure and convenient to install, has excellent anti-freezing and expansion capacity, also has extremely convenient self-recovery function, and can be used for a long time; and the anti-freezing expansion system for the catenary strut foundation is very suitable for alleviating the frost heave and thawing settlement phenomenon in a frozen soil region, for keeping the stability of the building foundation and the long-term operation safety of the system inthe frozen soil region, and very suitable for the anti-freezing expansion projects of the catenary strut foundation in the frozen soil region.
Owner:LANZHOU JIAOTONG UNIV
Continuous nitrocotton packaging production process
The invention discloses a continuous packaging production process and in particular relates to a continuous nitrocotton packaging production process. The continuous nitrocotton packaging production process through which the occupied volume of the nitrocotton is reduced during packaging comprises the following steps of: dehydrating nitrocotton slurry or dewatering nitrocotton slurry through alcohol substance replacement; conveying the nitrocotton to a metal detector by utilizing a conveying mechanism, and removing metals mixed in the nitrocotton by utilizing the metal detector; feeding the nitrocotton in which the metals are removed into a tablet press for pressing tablets; and finally, packaging the pressed nitrocotton. Because the nitrocotton is pressed before packaging, the apparent density of the nitrocotton is improved, so that the occupied volume is greatly reduced during packaging, the more nitrocotton can be accommodated in the packaging structure with the same specification; and therefore, the storage and transportation cost is saved.
Owner:SICHUAN NITROCELLULOSE CORP
Ship lock miter gate and hoist health state real-time online monitoring system
PendingCN111897270AEasy to buyReal-time grasp of operating statusProgramme controlMeasurement devicesEarly warning systemControl engineering
The invention discloses a ship lock miter gate and hoist health state real-time online monitoring system. The system comprises a stress-strain monitoring system, a flow-induced vibration monitoring system, a top pivot state monitoring system, a bottom pivot state monitoring system, a gate operation posture monitoring system, an opening and closing force monitoring system, a signal transmission system, a signal acquisition system, a monitoring system, an early warning system, a data system and a PC system. According to the invention, the system is scientific in principle , simple in structure,convenient to purchase adopted components, easy to operate during construction, capable of guaranteeing the monitoring effect and mastering the operation conditions of large metal structure equipmentsuch as a ship lock miter gate and a hoist in real time, and easy to widely popularize in metal structure engineering of domestic harbor and navigation channel engineering due to the fact that the overall construction cost is controllable.
Owner:郑州金闸测控技术有限公司
Composite water treatment medicament
InactiveCN101462800AReduce pollutionGood corrosion and scale inhibition effectScale removal and water softeningWater cyclingWater quality
The invention discloses a composite water treatment medicine, which comprises the compositions of acrylic acid-2-acrylamido-2-methylpropane sulfonic acid copolymer, phosphono-carboxylic acid, 1-hydroxy ethylidene-1,1-diphosphonic acid, zinc salt and water; and the compositions are mixed according to the proportion to prepare the water treatment medicine. The medicine has excellent effect of scale and corrosion inhibition on treating high-strength and high-hardness water so as to ensure that the corrosion rate and the scale deposit velocity of the treated water are both lower than the control index of recirculated water quality monitoring, and is incomparable with other water treatment medicines in aspects of prolonging service life and repair cycle of equipment, ensuring long-term safe operation of the equipment, saving steel materials and water, reducing environmental pollution and the like. The water treatment medicine is applied to an industrial cooling water circulating system, and has great economic and social benefit and good popularization value.
Owner:王连新
Solar water heater heat storage unit with safety device and installation method of heat storage unit
ActiveCN105020917AGuarantee long-term safe operationNo lossSolar heat devicesSolar thermal energy generationInternal pressureSolar water
The invention relates to a solar water heater heat storage unit with a safety device and an installation method of the heat storage unit. The heat storage unit comprises a heat storage element (1) and a decompression valve (4). A phase-change heat storage material (7) is arranged in the heat storage element (1). A decompression hole (9) is formed in one end of the heat storage element (1), and the decompression valve (4) is fixed to one end of the heat storage element (1) and is communicated with the interior of the heat storage element (1) through the decompression hole (9). The heat storage unit is horizontally or obliquely arranged in a solar collector pipe (5), so that the decompression valve (4) is upward, an opening in the inner side of the decompression hole (9) is higher than the liquid surface of the heat storage material (7). Compared with the prior art, by the adoption of the additionally arranged decompression valve and the simple and convenient installation method, internal pressure of the heat storage unit is limited by releasing gas and a small amount of steam, and safe operation of the heat storage unit is guaranteed. Besides, losses of heat storage mediums are small when the decompression valve is opened, and heat storage capacity of the element is basically not reduced.
Owner:PIONEER ENERGY JIANGSU
Solid-state oxygen control device
PendingCN107610788ASolve key technical difficultiesPrecise control of oxygen concentrationNuclear energy generationCooling arrangementNuclear engineeringLead oxide
The invention discloses a solid-state oxygen control device. The device comprises a container, a flow rate adjusting unit and a replenishment mechanism, wherein a dissolution chamber for holding leadoxide pellets is arranged in the container, and an inlet and an outlet which are communicated with the dissolution chamber respectively are formed in two ends of the container; the flow rate adjustingunit is arranged on the container and used for controlling the flow rate of a coolant in the container; the replenishment mechanism is connected with the dissolution chamber to replenish the lead oxide pellets for the dissolution chamber. By means of the arrangement of the replenishment mechanism and a return pipe, the problem that current solid state oxygen control cannot realize online replenishment is solved, high-power oxygen supply of a reactor device and online replenishment of the lead oxide pellets are realized, the concentration of oxygen in the coolant can be accurately controlled,so that a layer of dense oxide film is formed on the surface of steel, lead-based alloy is prevented from further penetrating into the steel, an anticorrosion effect is realized, key technical difficulties of a lead-based fast reactor or an ADS system are overcome, and long-term safe operation of an experimental loop and the lead-based fast reactor is ensured.
Owner:LINGDONG NUCLEAR POWER +3
Dynamic change balance compensation device for traction elevator and dynamic change balance compensation method
The invention discloses a dynamic change balance compensation device for a traction elevator and a dynamic change balance compensation method. The dynamic change balance compensation device comprisesa lift car; a hoist rope is connected to the lift car, wound on a traction wheel and a beam pulley and then is connected to a counterweight device; the traction wheel and the beam pulley are fixed ina machine room of the top layer of the elevator room; a first liquid tank is arranged at the bottom of the counterweight device and is connected to a conveying pump through a connecting pipe; the conveying pump is further communicated with a second liquid tank, and the second liquid tank is fixed to the side shaft wall of the counterweight device; a first directional control valve and a second directional control valve are arranged at the end, close to the first liquid tank, of the connecting pipe and the end, close to the conveying pump, of the connecting pipe correspondingly; and the conveying pump, the first directional control valve and the second directional control valve are electrically connected to a controller respectively. According to the dynamic change balance compensation device and the dynamic change balance compensation method, a dynamic change compensation balance technology is utilized, so that the daily operation mode of the elevator is a favorable operation mode, thestarting current and the running current of the elevator are greatly decreased, so that the operation of the elevator can be more stable and energy-saving, and therefore the practicability is good, and the device and the method are worthy of popularization.
Owner:张洪学
Insulator-integrated grounding wire clamp with flip insulated safety cover
ActiveCN102882026BAvoid shakingAvoid erosionCouplings bases/casesElectric connection structural associationsEngineeringElectric power
Owner:河北民源电力器材制造有限公司
Backpack type steel belt elevator
PendingCN109455604ALift the center of gravity in unisonConsistent suspension center of gravityBuilding liftsBlocked ConnectionArchitectural engineering
The invention provides a backpack type steel belt elevator. Car doors are arranged on the rest three vertical surfaces, except from the vertical surface connected to a bracket, of a car, so that taking comfort of an elevator is good, and long-term safe operation of the elevator is guaranteed. The backpack type steel belt elevator comprises the car, and a backpack frame, and further comprises a tractor which is positioned on the top of the well, wherein the backpack frame comprises a top horizontal frame, and a perpendicular vertical type frame; the top horizontal frame is fixedly connected with the perpendicular vertical type frame; the top of the car is fixedly connected with the top horizontal frame; a well, which corresponds to the corresponding surface of the perpendicular vertical type frame, is fixedly equipped with two groups of guide rail brackets which are arranged in a spaced mode; first guide rail structures are separately arranged at the outer sides of each group of the guide rail brackets; a corresponding stand column of the perpendicular vertical type frame is in blocking connection with a corresponding first guide rail structure through a guide shoe; second guide rail structures are separately arranged at the inner sides of the guide rail brackets; the two sides of a counterweight device are in blocking connection with corresponding second guide rail structures through perpendicular guide slots separately; and the counterweight device is positioned in the well.
Owner:SUZHOU DEYISI ELEVATOR CO LTD
Self-stress and self-leveling grouting material for equipment
The invention provides a self-stress and self-leveling grouting material for equipment. The grouting material consists of main materials and auxiliary materials, wherein the main materials comprise 30-45% of cement, 10-25% of mineral admixture and 35-45% of river sand, and the mineral admixture consists of pulverized coal ash, mineral powder and river sand powder which are in the mass ratio of (0.6-1.0): (1.6-2.0): (0.6-1.0); and the auxiliary materials comprise an expansion agent composition, a water retention thickener, an early strength agent and a powdered polycarboxylic acid water reducing agent and contain the ingredients in percentage by mass based on the sum of mass of cement and mineral admixture sequentially: 4%-8% of the expansion agent composition, 0.01%-0.05% of the water retention thickener, 2%-4% of the early strength agent and 0.2%-0.4% of the powdered polycarboxylic acid water reducing agent, wherein the expansion agent composition consists of rice hull ash, MgO and a UEA expansion agent which are in the mass ratio of (0.6-1.0): (0.6-1.0): (1.5-2.0), the water retention thickener is sodium alginate, and the early strength agent consists of gypsum powder, sodium carbonate and silica fume which are in the mass ratio of (0.8-1.0): (0.5-1.0): (0.6-1.0).
Owner:LINYI UNIVERSITY
Contact switch for elevator safety door
PendingCN111547590AGuarantee long-term safe operationSimple structureContact operating partsElevatorsStructural engineeringControl theory
The invention relates to the field of machinery, in particular to a contact switch. The contact switch for an elevator safety door comprises a contact switch body, the contact switch body comprises ashell and a push rod arranged on one side of the shell, the shell comprises an upper box cover and a lower box body, and the upper box cover is arranged above the lower box body. Through the design, the contact switch for the elevator safety door is provided, is simple in structure and rapid and convenient to use and can be mounted in an existing narrow mounting space of an elevator door motor, the hidden danger of poor connection is reduced, it is ensured that a safe electrical component of an elevator door system is not influenced by the environment and the load, and thus long-term safe operation of the an elevator is ensured.
Owner:上海彤广科技有限公司
Stress corrosion sensitivity prediction method for shell-and-tube heat exchanger tube and tube plate welded joint
PendingCN112270118AAccurately establishedGuaranteed accuracyDesign optimisation/simulationSpecial data processing applicationsStress concentrationStress distribution
The invention belongs to the technical field of welding materials, and relates to a stress corrosion sensitivity prediction method for a shell-and-tube heat exchanger tube and tube plate welded joint.The influence of cracks on welding residual stress redistribution is considered, the coincidence degree of a finite element simulation result of heat exchanger tube head stress distribution and actual component stress distribution is improved, and then the influence of crack defects on tube head stress concentration is accurately obtained. Electrochemical corrosion parameters of different areas are obtained through corrosion tests of different areas of a pipe and pipe plate welding joint. The method has the advantages that based on thermodynamic and electrochemical theories of materials, thestress corrosion sensitivity of the welded joint of the tube and the tube plate is predicted, the stress corrosion sensitivity of different parts is obtained, and the method has important theoreticalguiding significance and engineering application value for guaranteeing safe operation of the tube head of the heat exchanger.
Owner:GANSU LANPEC TECH +2
Transformer valve sleeve insulation support and installation guide structure assembly and assembly method
ActiveCN112614675AAvoid damageReduce mechanical stressTransformers/inductances coils/windings/connectionsInductances/transformers/magnets manufactureGlass fiberTransformer
The invention relates to a transformer valve sleeve insulation support and installation guide structure assembly. The transformer valve sleeve insulation support and installation guide structure assembly comprises an installation guide structure used for installing a valve sleeve on a valve lifting base and an insulation supporting structure used for supporting the valve sleeve. The installation guide structure comprises two detachable guide rods fixedly arranged on the valve lifting base and guide cushion blocks movably arranged on the guide rods. The insulation supporting structure is a frame type insulation supporting structure mainly made of I-shaped steel and comprises a supporting structure and a glass fiber insulation structure. The invention further relates to an assembly method of the transformer valve sleeve insulation support and installation guide structure assembly. By means of the tool design of the installation guide structure, inclination of the tail of the valve sleeve caused by hoisting errors and other operations during installation is avoided, structural reinforcement can be conducted on existing transformer valve sleeve installation, the connecting rigidity of the valve lifting base and an oil tank is improved, the structural principle is simple, practicability is good, and long-term safe operation of the structure is guaranteed. And the purpose of popularization and application on the + / -800kV converter transformer is achieved.
Owner:SHANDONG POWER EQUIP +1
A solar water heater heat storage unit with a safety device and its installation method
ActiveCN105020917BGuarantee long-term safe operationNo lossSolar heat devicesSolar thermal energy generationInternal pressureSolar water
Owner:PIONEER ENERGY JIANGSU
High flexibility wear resisting flame retardation industrial chain cable
InactiveCN105070358AImprove anti-electromagnetic interference performanceGood flexibilityFlexible cablesFlexible conductorsElectrical conductorInsulation layer
The invention discloses a high flexibility wear resisting flame retardation industrial chain cable, which is durable, non-cracking, no-core-breaking, and long in service life, and guarantees the long term safety operation of the device. The high flexibility wear resisting flame retardation industrial chain cable comprises a sheath, a weaving layer and a wrapping layer which are successively arranged from the outside to the inside and have annular cross sections; the inner wall of the wrapping layer forms a center cavity, in which a finished cable is arranged; the finished cable comprises at least one group of control core cables; each control core cable group comprises at least one core cable; each core cable comprises an insulation layer on the outer layer and a conductor on the inner layer; all core cables are twisted to form finished cables; twisted cotton threads are arranged in the gaps between the finished cables formed by the core cables; and the outer circumference annular surface of the finished cable is coated by the wrapping layer.
Owner:HWATEK WIRES & CABLE
Offshore wind turbine foundation and construction mechanism thereof
The invention discloses an offshore wind turbine foundation which is fixed into pipe columns with openings. The offshore wind turbine foundation comprises a first body, a connecting plate and a second body which are sequentially arranged from top to bottom. One side of the connecting plate is connected with the first body, and the other side of the connecting plate is connected with the second body. The ends, away from the connecting plate, of the second body extend into the openings and are connected with the pipe columns. When the pipe columns are deflected from the preset installation position and the deflection of the pipe columns exceeds the permitted construction error, the second body can be deflected from the connecting plate by a certain degree so that the second body can be smoothly inserted and fixed into the pipe columns. The offshore wind turbine foundation is simple in structure and high in operability, the situation that the deflection permitted column sinking error is large can be rapidly remedied, the smooth installation of the offshore wind turbine foundation can be ensured, and the offshore construction installation efficiency and reliability are improved; the pipe columns which are large in construction error do not need to be specially processed, and the economic benefits of the offshore wind turbine foundation are good.
Owner:CHINA ENERGY ENG GRP GUANGDONG ELECTRIC POWER DESIGN INST CO LTD
Magnetic separation belt
ActiveCN105668183AAchieve layeringEfficient magnetic separation processConveyorsRollersMagnetic separatorMagnetization
The invention discloses a magnetic separation belt. The magnetic separation belt comprises a conveying belt, magnetic supporting rollers are arranged in the conveying belt, conveying belt correction wheel sets are arranged on the two sides of the conveying belt, a magnetization wheel is arranged at the tail end of the movement direction of an upper belt of the conveying belt, and the range of magnetic fields of the supporting rollers cover the part, adjacent to the supporting rollers, of the conveying belt. According to the magnetic separation belt, magnetic material and non-magnetic material in conveyed material can be layered on the belt, the conveying belt can be effectively prevented from deflecting and can be operated safely for a long time, and the magnetic separation efficiency of a magnetic separator can be improved.
Owner:CHENGDU LEEJUN IND
Seamless switching circuit for three-phase full-automatic alternating-current electricity-saving device
ActiveCN106300643AGuarantee long-term safe operationEasy and safe maintenancePower network operation systems integrationInformation technology support systemElectricityEngineering
The invention discloses a seamless switching circuit for a three-phase full-automatic alternating-current electricity-saving device. The circuit comprises a main circuit and a control circuit; functions of the three-phase full-automatic alternating-current electricity-saving device, such as energy saving, voltage stabilizing and high power supply quality, are realized by adopting technological means, such as seamless switching, three-phase balance, intelligent voltage adjustment and automatic capacity adjustment; the main circuit is mainly composed of a voltage adjustor, a transformer and a switch; seamless switching of an electricity-saving device bypass and an energy-saving state is realized by reasonably controlling closing and disconnection sequences of the switch in the main circuit; the control circuit is composed of a switching circuit, a clock signal generation circuit and a switch driving circuit; a drive signal is output to drive the switch of the control circuit; and ordered closing and disconnection of the switch of the main circuit are controlled through the switch of the control circuit. The seamless switching circuit disclosed by the invention can be automatically switched to commercial power supply under conditions that load electricity consumption is influenced or the device is further destroyed due to the fact that the electricity-saving device is failed; therefore, energy-saving and non-energy-saving automatic seamless switching can be realized; and thus, the power supply safety and stability are ensured.
Owner:鄂尔多斯市泰坤电器技术有限公司
Satellite co-position analyzing and modeling method and system based on hybrid power orbit control technology
ActiveCN109507909AGuarantee long-term safe operationEnsuring coverage of accuracy requirementsSimulator controlOrbitSatellite
The invention discloses a satellite co-position analyzing and modeling method and system based on a hybrid power orbit control technology. The method comprises the following steps: performing a co-position strategy isolated in combination with an eccentricity vector difference and an inclination vector difference on a satellite A, a co-orbit satellite 01 and a co-orbit satellite 02; acquiring an orbit control strategy of the satellite A, an orbit control strategy of the co-orbit satellite 01 and an orbit control strategy of the co-orbit satellite 02; according to the orbit control strategy andquality, a light pressure coefficient, a satellite effective illumination area, electric thruster configuration and chemical thruster configuration of the satellite A, performing modeling simulation;according to the orbit control strategy and quality, a light pressure coefficient, a satellite effective illumination area and chemical thruster configuration of the co-orbit satellite 01, performingthe modeling simulation; and according to the orbit control strategy and quality, a light pressure coefficient, a satellite effective illumination area and chemical thruster configuration of the co-orbit satellite 02, performing the modeling simulation. The method is capable of solving a problem that it is difficult to design the simulation on the basis of a hybrid power satellite co-position scheme and an orbit control scheme, and a risk of co-position management is indeterminate.
Owner:中国卫通集团股份有限公司
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