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115results about How to "Avoid overheating" patented technology

Material increase manufacturing method for titanium alloy shape part by using double-arc hybrid heat source

The invention relates to a material increase manufacturing method for a titanium alloy shape part by using a double-arc hybrid heat source. The method comprises the following steps: MIG welding and TIG welding are originally combed, a welding wire as a melting electrode is sent out by an MIG welding gun and is subjected to surfacing on a base plate; an MIG power anode is connected with a TIG power anode, and an MIG power cathode is connected with the base plate, the MIG welding gun is connected with the MIG power anode, and a TIG welding gun is connected with a TIG power cathode; the MIG welding gun is in the front, and the TIG welding gun is in the back; the current of the welding wire is shunted through a TIG welding circuit, so that the current passing through the welding wire is large, and the current passing through a weldment is small. After the base plate completes a first surfacing layer, a hybrid welding gun is increased by a story height, and a second layer of shape part is welded; the above process is repeated, so that the titanium alloy shape part is formed by overlaying plurality of surfacing layer. The method has the advantages of being high in metal deposition rate, high in welding speed, less in weldment heat input, good in structural and mechanical properties of the shape part and low in cost and solves the problems of lager heat input, low welding speed, poor welding quality and low efficiency during material increase manufacturing of the traditional titanium alloy single TIG arc wire feeding.
Owner:JIANGSU UNIV OF SCI & TECH

Daily-use ceramic bowl vibration polishing equipment based on negative pressure attachment

The invention provides daily-use ceramic bowl vibration polishing equipment based on negative pressure attachment, and relates to the field of ceramic bowl machining. The daily-use ceramic bowl vibration polishing equipment based on negative pressure attachment comprises a base, supporting legs are fixedly connected to the periphery of the upper surface of the base, a supporting plate is fixedly connected to the upper surfaces of the supporting legs, first bolts are arranged on the inner wall of the supporting plate, the tops of the surfaces of first threads are in threaded connection with first fixing blocks, and the upper surfaces of the first fixing blocks are fixedly connected with first clamping rings. According to the daily-use ceramic bowl vibration polishing equipment based on negative pressure attachment, a piston block moves upwards, negative pressure is generated below the piston block, certain adsorption capacity is achieved on a ceramic bowl through an air hole, so that the problem that in the case of existing daily-use ceramic bowl vibration polishing equipment, when the ceramic bowl is fixed through a clamp, the clamping force of the clamp to the ceramic bowl is relatively small, so that during polishing, the ceramic bowl is prone to falling off, and then the polished ceramic bowl is inconvenient to take out is effectively solved.
Owner:梅州恒辉陶瓷实业有限公司

Automatic control system of solar water heater and control method thereof

The invention belongs to the field of solar water heaters and particularly relates to an automatic control system of an solar water heater and a control method thereof. The automatic control system comprises a water storage tank, a main circuit controller, a 220V AC (Alternating-Current) circuit controller and a water delivery pipe, wherein the main circuit controller comprises a central processor, and the central processor is respectively and electrically connected with a water-level detection circuit, a temperature detection circuit, a heating circuit, a light sampling circuit, a water inlet valve control circuit, a water outlet valve control circuit, a display circuit and a keyboard circuit; the water-level detection circuit also comprises photoelectric liquid-level switches which are arranged at liquid-level positions of the 30 percent volume, the 60 percent volume and the 90 percent volume in the water storage tank of the solar water heater; and simultaneously, the 220V AC mains-supply control circuit is used for matching to assist heating. The automatic control system has the advantages that the water temperature and the water level are maintained in the set range, so that the solar water heater is prevented from being damaged due to over-low water temperature and water scales are prevented from being formed when the water temperature is high.
Owner:GUANGXI UNIV

Wire arc additive manufacturing method of Al-Mg-Si alloy

ActiveCN109807562ARepair defects such as pores and cracksAvoid overheatingCrystalliteMachining process
The invention discloses a wire arc additive manufacturing method of Al-Mg-Si alloy. The wire arc additive manufacturing method of Al-Mg-Si alloy comprises the following steps that firstly, cooling rolling is used for assisting in arc additive forming; secondly, milling is carried out on the side face and the top face of an additional material body; thirdly, a friction stir machining device is usedfor carrying out friction stir machining on the additional material body, meanwhile, in the friction stir machining process, a cooling rolling device is used for exerting cooling rolling on the sidewall of the additional material body; fourthly, finish milling is carried out on the upper surface of the additional material body for preparing of arc additive forming of the next step; fifthly, theabove steps are circularly and repeatedly executed until the final forming of the part is finished. Dendritic growth and grain refining in the Al-Mg-Si alloy additive forming process can be completelybroken, defects of air holes, cracks and the like can be effectively overcome, meanwhile, in the wire arc additive manufacturing and the modification process thereof, cooling is applied, the problemsof additional material body overheating and microstructure coarsening caused by overheating can be solved, and the mechanical property, particularly, plasticity and fatigue properties, of the addition material body can be greatly improved.
Owner:NORTHEASTERN UNIV

Inner water-cooled generator stator anti-vapor blocking device and method

The invention provides an inner water-cooled generator stator anti-vapor blocking device which is connected with a stator waterway of a generator cooling system. The anti-vapor blocking device comprises a temperature measurement element, a flowmeter and a pressure release unit. The temperature measurement element is arranged at a 12-o'clock position of a parallel ring top end of the stator and used for predetermining occurrence of a vapor blocking phenomenon. The flowmeter is arranged on an outer wall of a small conflux pipe and used for predetermining occurrence of the vapor blocking phenomenon. A flow signal of the flowmeter and a measurement signal of the temperature measurement element are led outside the generator by a generator base box terminal and are jointly sent to a generator monitoring system. The pressure release unit is connected to the 12-o'clock position of the parallel ring top end of the stator through a pipe and used for releasing vapor-blocked gas. By monitoring temperature and water pressure of the parallel ring top end of the stator and the system flow, accidents that a stator coil is overheated and winding bars are burned due to vapor blocking of the generator can be timely and effectively prevented, and the equipment operation reliability is improved.
Owner:SHANGHAI MUNICIPAL ELECTRIC POWER CO +2

Tower type solar energy-steam combustion gas combined cycle power generation system

ActiveCN102966495AAvoid overheatingSolve temperature control problemsSuperheating controlFrom solar energyFlueSuperheater
The invention relates to a tower type solar energy-steam combustion gas combined cycle power generation system, which comprises a solar energy heat absorber, a combustion gas turbine, a residual heat boiler and a steam turbine. The residual heat boiler is connected with the combustion gas turbine; the solar energy heat absorber is connected with a superheater unit of the residual heat boiler; a fume outlet of the combustion gas turbine is communicated with a main flue of a fire hole section of the residual heat boiler; a bypass pipeline is arranged on the main flue; a fume distributing device is arranged on the bypass pipeline; when solar energy reaches a preset value, the fume distributing device closes the bypass pipeline; and when the solar energy does not reach the preset value, the fume distributing device opens the bypass pipeline. By using the tower type solar energy-steam combustion gas combined cycle power generation system, through arranging the bypass pipeline on the main flue and the fume distributing device, the flexible regulation of a superheated steam temperature is realized; the defect that the power generation by using pure solar energy is unstable is overcome; the power generation efficiency and the power generation quality are improved; the consumption of a fuel can be effectively decreased; and the purposes of energy saving and emission reduction are achieved.
Owner:ZHEJIANG SUPCON SOLAR TECHNOLOGY CO LTD

Solar energy and engine exhaust heat dual-power refrigeration air conditioner for vehicle

InactiveCN101504224ASave gasoline energyAvoid overheatingClimate change adaptationMachines using waste heatLithium bromideDual energy
The invention relates to an automotive solar energy and engine waste heat dual-energy refrigeration air conditioner, in particular to an air conditioner device by comprehensively using solar energy and automotive engine waste heat. The air conditioner comprises an absorber, a solution pump, a low-temperature heat exchanger, a high-temperature heat exchanger, a high-pressure generator, a low-pressure generator, a condenser, an evaporator, a refrigerant pump and an air-cooling radiator, and is characterized by also comprising an interior heat exchanger connected with a heat exchange coil arranged in the evaporator, a heat energy storage which is connected and exchanges heat with the high-pressure generator through a heat-transfer pipe and a heat pump arranged in the heat-transfer pipe. Solar energy collected by a solar energy thermal collector arranged on the top of an automobile and engine waste heat collected from engine exhaust pipe and engine radiation water tank input heat into the inside of the heat energy storage through pipelines. The refrigeration part of the air conditioner uses water as a refrigerant and a solution of lithium bromide as an absorbent for refrigeration. The air conditioner reasonably uses solar energy and engine waste heat in automotive air conditioner, and is characterized by economy, energy conservation, no environmental pollution and the like.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Al-Zn-Mg-Cu alloy wire and arc additive manufacturing method

The invention provides an Al-Zn-Mg-Cu alloy wire and arc additive manufacturing method. The manufacturing method comprises the following steps of (1) conducting arc additive forming through cooling and rolling assistance; (2) conducting milling on the side face and the top face of an additive material body; (3) conducting friction stir processing on the additive material body through friction stirprocessing equipment and conducting cooling and rolling on the sidewalls of the additive material body through a cooling and rolling device during friction stir processing; (4) conducting finish milling on the upper surface of the additive material body to make preparation for the next step of arc additive forming; and (5) cyclically repeating the above steps until final forming of a part is completed. Through the Al-Zn-Mg-Cu alloy wire and arc additive manufacturing method, dendritic growth and grain refinement in the Al-Zn-Mg-Cu alloy additive forming process can be completely abolished, and the deficiencies such as pores and cracks are effectively repaired; meanwhile, during the wire and arc additive manufacturing and modifying process, microstructure roughening caused by overheat of the additive material body is prevented through cooling, and the mechanical performance, especially plasticity and fatigue performance, of the additive material body is greatly improved.
Owner:NORTHEASTERN UNIV

Deoxidizing reaction device for oxygen-containing coalbed methane

InactiveCN106994319AEliminate reaction hot spotsAvoid overheatingGaseous fuelsChemical/physical processesElimination reactionCarbon dioxide
The invention discloses a deoxidizing reaction device for oxygen-containing coalbed methane. The deoxidizing reaction device for the oxygen-containing coalbed methane mainly comprises a vertical heat transfer sleeve pipe deoxidizing reactor, a heat transfer temperature control system, a heat transfer medium circulating and control assembly and a heat exchange device, wherein a heat transfer medium distribution chamber and a reflux chamber are arranged at a deoxidizing top; a vertical sleeve pipe is formed by nesting an inner pipe and an outer pipe, and extends downwards into a catalyst bed layer until the vertical sleeve pipe reaches the bottom part of the bed layer, and a heat transfer medium in the distribution chamber can flow downwards into the inner pipe, and then flow upwards into the reflux chamber via the outer pipe; the heat transfer medium circulating and control assembly and the heat exchange device are arranged in the reflux chamber and/or at the exterior of the reactor. The deoxidizing reaction device has the advantages that the circulating heat transfer temperature control is performed by the vertical heat transfer sleeve pipe deoxidizing reactor and normal-pressure or a low-temperature heat conduction oil, molten salt, nitrogen, carbon dioxide or overheated water steam heat exchange medium with temperature approximate to the temperature of the catalyst bed layer, a reaction heat point is eliminated, the reaction is stable and controllable, the running is safe, and the reaction effect is good; the service life of the catalyst is long, and the catalyst can be easily discharged out of the bottom part of the reactor in a replacing process; when the sleeve pipe with a small number of leakage is blocked off, the influence to the bed layer temperature and the reaction effect is small.
Owner:淄博赢信达知识产权咨询服务有限公司

Device and method for removing nitrogen oxides from hexanedioic acid tail gas

The invention discloses a device for removing nitrogen oxides from hexanedioic acid tail gas. The device comprises a diluting unit, a first reaction unit and a second reaction unit, wherein the diluting unit comprises a gas-liquid separator, a compressed air diluting container and a first concentration online analyzer which are connected in sequence through a pipeline; the first reaction unit comprises a charging preheater, a heating device, a first reaction device and a gas/gas heat exchanger which are connected in sequence through a pipeline; the second reaction unit comprises a mixing system, a second concentration online analyzer, a second reaction device, a third concentration online analyzer and a heat recycling device which are connected in sequence through a pipeline; the tops of the first reaction device and the second reaction device are provided with a plurality of insertion type thermometers; each thermometer is provided with a plurality of temperature measuring points from top to bottom on a catalyst bed. By adopting the device, a catalyst can run stably for a long time in a high-temperature acid environment, the reaction activity of the catalyst bed is kept, the removing rate of nitrogen monoxide is 98 percent or more, and the removing rates of nitrogen dioxide and nitrogen monoxide are 95 percent or more.
Owner:PINGDINGSHAN PUEN TECH CO LTD

Low-frequency, large-power underwater sound generator

PendingCN109413542AAvoid overheatingAvoid bulkTransducers for subaqueous useEngineeringUnderwater
The invention discloses a low-frequency, large-power underwater sound generator. The low-frequency, large-power underwater sound generator comprises a sound generator casing, wherein one side of the sound generator casing is open; a first vibrating diaphragm and a second vibrating diaphragm are arranged at the opening and closely connected with each other; the first vibrating diaphragm is arrangedon the outer side, and the second vibrating diaphragm is arranged on the inner side; a magnetic material is arranged in the sound generator casing; the outside of the magnetic material is enclosed bya first magnetically conductive material and a second magnetically conductive material; a gap, into which one end of a voice coil can be inserted, is formed between enclosing surfaces of the first magnetically conductive material and the second magnetically conductive material right opposite to the second vibrating diaphragm, and the other end of the voice coil is connected with the second vibrating diaphragm; gaps are formed between the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm and open walls of the sound generator casing; and the end surfaces on both sides of the first vibrating diaphragm and the second vibrating diaphragm are connected with the open walls through flexible and soft connecting pieces. The underwater sound generator provided by the invention has the advantages that the structure is simple; and the pressure in the casing and the voice coil temperature can be monitored in a real-time manner, so that the voice coil temperature can be effectively reduced, and the service life of the voice coil can be further prolonged.
Owner:NANJING CHANGRONG ACOUSTIC INC +2

Engine protection plate of maneuvering tumbrel

InactiveCN102310903AAvoid overheatingGuaranteed powerWeather guardsAutomotive engineeringMechanical engineering
The invention discloses an engine protection plate of a maneuvering tumbrel, which comprises a protection plate body covering at the bottom part of an engine and a connecting part used for connecting the protection plate body at the bottom part of the engine, the protection body is in a slot-shaped structure covering at the bottom part of the engine, the front side of the protection plate body with the slot-shaped structure is provided with an air guide hole which is communicated with the inside and the outside of the slot, and the tail end of the protection plate with the slot-shaped structure is in smooth transition along the longitudinal direction. When in use, the engine protection plate disclosed by the invention is arranged at the bottom part of the engine, can pertinently protect the engine of the maneuvering tumbrel, so that mud and dust can be prevented from being attached on the bottom part of the engine, thus, the phenomenon that the engine is too hot and has electric corrosion can be avoided, the power property of the whole vehicle and the service life of the engine can be ensured, simultaneously, the external impact of broken stones and other hard things to the engine can be avoided, thus, the bottom part of the engine can be prevented from being damaged by outer force, and the use cost can be reduced.
Owner:LONCIN MOTOR

Monitoring system and method for heat transfer characteristic of water wall tube of utility boiler

The invention relates to a monitoring system and method for the heat transfer characteristic of a water wall tube of a utility boiler. The monitoring system and method are used for monitoring the temperature of different positions of all water walls of the boiler. The monitoring system comprises heat transfer characteristic monitoring device sets installed at different positions of the water walls of the boiler, a data collector, a data displayer and a furnace combustion control computer. Each heat transfer characteristic monitoring device on the water wall tube comprises at least three temperature measuring elements, wherein the temperature measuring elements are arranged at specific positions of the device respectively and used for measuring the temperature of the side facing fire and the side back to fire of the measured water wall tube and the temperature of a working medium. Through arrangement of the monitoring devices at different positions of the boiler, the heat transfer characteristic, including the temperature of the wall on the side facing fire and the wall on the side back to fire of the water wall tube and the temperature of the working medium in the water wall tube, of the water wall tube of the boiler can be monitored in real time, and change of a flame in the boiler along with change of the heat transfer characteristic of the water walls, change of the heat transfer characteristic of the working medium and change of the temperature distribution characteristic of metal materials of the water walls are convenient to grasp.
Owner:HUANENG NANJING JINLING POWER GENERATION

Medical sealing machine provided with bidirectional operation handle

The invention discloses a medical sealing machine provided with a bidirectional operation handle. The medical sealing machine is characterized in that the upper ends of driven rods of the machine are connected to a press bar, shaft holes are horizontally formed in the lower ends of the driven rods, a drive rod is rotationally arranged in the shaft holes in a sleeving manner, and bilaterally symmetrical crow plates are fixed radially on the drive rod and below a heating groove; a left protective plate and a right protective plate are screwed and fixed at two ends of a sealing machine main body respectively, a left guide groove and a right guide groove which are corresponding in position are formed in the left protective plate and the right protective plate respectively, two ends of the drive rod are arranged in the left guide groove and the right guide groove respectively, the longitudinal length of each of the left guide groove and the right guide groove is larger than the stroke length between the press bar and a heating assembly, the handle is mounted at one end of the drive rod and on the outer side of the right protective plate, springs are coaxially fixed at the lower ends of the driven rods, and the lower ends of the springs are fixed on a housing; and a guide rail is arranged in parallel above the press bar and glidingly provided with a slide tool. When the machine is used, all that is required is to pull the handle forwards or backwards to the limit so as to press the press bar to the heating assembly, the press bar can be separated from the heating assembly rapidly after the handle is released, and overburning and sealing failure are prevented.
Owner:宁波乔登电子科技有限公司

Stacked module heat radiation structure and manufacturing method thereof

The invention discloses a stacked module heat radiation structure and a manufacturing method thereof. Second tin balls are welded on the lower surface of a lower packaging substrate. A third chip is fixed at the middle position of the upper surface of the lower packaging substrate. An upper packaging substrate is arranged above the lower packaging substrate. The middle position of the upper packaging substrate is provided with a window. First tin balls are welded on the lower surface of the upper packaging substrate. The first tin balls contact with the upper surface of the lower packaging substrate. The upper surface of the upper packaging substrate is provided with a plastic sealing member. A first chip is fixed on the upper surface of the upper packaging substrate at an inner position which corresponds with the plastic sealing member through first sealing glue. The projection of the base of a heat radiating plate penetrates through the window of the upper packaging substrate and is fixed with the upper surface of the third chip. According to the stacked module heat radiation structure, thermal resistance is reduced through the heat radiating plate structure, and a problem of overhigh temperature of the PoP can be effectively prevented.
Owner:NAT CENT FOR ADVANCED PACKAGING
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