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31results about How to "Solve overheating" patented technology

Liquid nitrogen injection device for continuous high-speed wind tunnel cooling system

The invention proposes a liquid nitrogen injection device for a continuous high-speed wind tunnel cooling system, and the device comprises a liquid collection ring, an upstream liquid nitrogen nozzle block, and a downstream liquid nitrogen nozzle block. The liquid nitrogen injection device is installed in a liquid nitrogen injection experiment segment. The liquid collection ring is an annular low-temperature-resistant stainless steel pipe, and the internal diameter of the liquid collection ring is the same as the external diameter of an experimental wind tunnel at an installation position. The liquid collection ring is installed at the experimental wind tunnel in an annular manner, and is used for receiving the low-temperature liquid nitrogen from a main pipe and conveying the liquid nitrogen to the liquid nitrogen nozzle blocks. The upstream and downstream liquid nitrogen nozzle blocks are distributed along the air flow axis of the wind tunnel in a parallel manner. The distance between the upstream liquid nitrogen nozzle block and the upstream end face of the experimental segment is 0.61d, and the distance between the downstream liquid nitrogen nozzle block and the upstream end face of the experimental segment is 1.72d, wherein d is the internal diameter of the upstream end face of the experimental segment. The matching of the device with the whole cooling system of the wind tunnel is good. The technical scheme of the invention provides support for the building of the first Chinese continuous high-speed wind tunnel cooling system.
Owner:NORTHWESTERN POLYTECHNICAL UNIV

Intelligent solid state relay with efficient protection function

The invention discloses an intelligent solid state relay with an efficient protection function. The intelligent solid state relay comprises a shell and a control system, wherein a heat dissipation device is arranged in the shell; the heat dissipation device is arranged on a bottom board of the shell; a DCB board is arranged on the heat dissipation device; the DCB board is provided with an integrated circuit; the integrated circuit comprises a coupling circuit, a triggering circuit, a switching circuit, an absorbing circuit and a zero pass control circuit; the control system comprises a detection module, a control module and an execution module; the detection module is used for detecting a voltage and current in a relay circuit and temperatures of elements; the control module is used for receiving data of the detection module, comparing the data with a preset threshold, and sending an execution command; and the execution module is used for receiving the execution command sent by the control module to perform over-voltage protection, over-current protection and over-heat protection. Through adoption of the intelligent solid state relay, heat dissipation processing, over-current protection and over-voltage protection can be performed automatically and rapidly, and normal working of the solid state relay is protected effectively.
Owner:CHENGDU DESHANNENG TECH CO LTD

PTC inorganic composite material and preparation method and application thereof

The invention provides a PTC inorganic composite material, which is mainly prepared from the following raw materials (by weight): 75-95% of a nano-ceramic material, 1-20% of a graphite carbon material coating agent and 0.5-5% of a dispersant. A preparation method of the composite material comprises the following steps: mixing the nano-ceramic material and the graphite carbon material coating agent, adding the dispersant and a proper amount of ethanol and uniformly mixing to obtain a uniform solution, and carrying out heat treatment under the protection of inert gas at the temperature of no more than 200 DEG C. According to the PTC inorganic composite material of the embodiment, an inorganic material, namely the nano-ceramic material, is compounded with the graphite carbon material coating agent, and the carbon material is used for coating particles of the inorganic material so as to realize conductivity and internal insulation effects of the carbon material. The material can be applied to electrical heating materials, such as carbon crystal heating panels. Properties are more stable, and problems such as aging, bloating, etc. will be avoided. Properties of the carbon crystal panels are subversively enhanced, service life is greatly prolonged, and considerable economic benefit is also generated.
Owner:JINAN SHENGQUAN GROUP SHARE HLDG

High-quality steam temperature control system for power station boiler

The invention provides a high-quality steam temperature control system for a power station boiler. A leading segment steam specific enthalphy signal is used as a quick loop feedback signal in the double-loop steam temperature control system, and the control logic of the leading segment steam specific enthalphy feedback loop part of the system is that a leading steam temperature feedback value signal and a leading segment steam pressure feedback value signal obtained after one-order inertia smoothing is conducted are input into a steam specific enthalphy computing module at the same time, the leading segment steam specific enthalphy signal is worked out through the steam specific enthalphy computing module, and then the leading segment steam specific enthalphy signal is used as the quick loop feedback signal in replacement of a leading steam temperature signal to be introduced into the steam temperature control system. According to the high-quality steam temperature control system for the power station boiler, the leading segment steam specific enthalphy replaces the leading steam temperature and serves as the quick loop feedback signal, the problems of reduction of the steam temperature control quality caused by overheat and reheat under the large-amplitude high-speed variable-load working condition of a thermal power generating unit are solved, and the function of stabilizing the steam pressure of the boiler can be played. Furthermore, the high-quality steam temperature control system for the power station boiler has the beneficial effects of being easy to configure and debug and the like.
Owner:NORTH CHINA ELECTRIC POWER UNIV (BAODING)

Multi-functional heating furnace

The invention relates to a multi-functional heating furnace. The heating furnace comprises a heating furnace casing, a heat exchange barrel, a heating pipe, water circulating pipes and an external power source, wherein the heating furnace casing is used for storing oil well output liquid; the heat exchange barrel is directly inserted into the heating furnace casing and immersed into the output liquid, the heat exchange barrel consists of a main barrel and two wing barrels, and the main barrel and the two wing barrels are filled with heat-conducting media; the heating pipe is inserted into the main barrel and immersed into the heat-conducting media so as to heat the heat-conducting media; the output liquid is indirectly heated through the heat exchange barrel. According to the multi-functional heating furnace, the problems that the heating pipe is corroded and scaled and easy to burn out and the service life is short are effectively prevented, in addition, the heat exchange barrel and the heating pipe are respectively sunken in the output liquid and the heat-conducting media, so that heat loss is not generated, and the heating efficiency is improved. The heat exchange barrel is connected with a circulating water inlet pipeline and a circulating water outlet pipeline and can be connected with a solar water heater, and heat media preliminarily heated by the solar water heater are transported to the heating pipe to be reheated, so that solar energy resources are effectively utilized, and electric energy is saved. A power source of the heating pipe can be connected with a wind-energy generating battery and a solar battery, so that the comprehensive utilization of wind, light and electricity is realized, the energy is saved, and the emission is reduced. The heat exchange barrel comprises the two wing barrels, the diameter and the length of each wing barrel can be regulated so as to meet requirements of the heat exchange area, the same ends of the main barrel and the wing barrels are communicated through connecting pipes, after being inserted into the main barrel through the connecting pipes, the other ends of the wing barrels penetrate through sealing flanges of the main barrel and the casing, and penetrate out of the main barrel to be connected with a solar heat source, and the other end of the main barrel is connected with the solar heat source through a connecting pipeline, so that the closed cycle is realized.
Owner:史晨

Production equipment for polyoxyethylene products and preparation method thereof

The invention relates to production equipment for polyoxyethylene products and a preparation method thereof. The equipment comprises a polymerization reaction kettle, integrated equipment, a finished product mixing kettle, a solvent recycling tank, a distillation kettle, a hexane storage tank and an unqualified hexane storage tank. The production process of the polyoxyethylene products comprises the steps that ring opening polymerization is performed on ethylene oxidein C6 or C7 solvent through the action of a catalyst, exothermic reaction is performed at a certain temperature and under certain pressure, and the requirements of product specifications are achieved through the growth of polymeric chains; after the reaction is finished, the products are processed through the integrated equipment with the functions of filtering, drying and washing, and then packaging is performed. According to the production equipment for the polyoxyethylene products and the preparation method thereof, the partial implosion phenomenon caused by the reaction is avoided, the volume of the reaction kettle is successfully enlarged to 6000 litres, the production scale of a PEO device is enlarged, and the stability of the product quality is improved; the method solves the problems of solvent dehydrating and solvent recycling and reusing.
Owner:吉化集团吉林市星云化工有限公司

Air conditioning indoor unit and control method thereof

PendingCN108759018AImprove the phenomenon of overcooling/overheating of air supplySame or even improved performanceMechanical apparatusEfficient regulation technologiesEngineeringAir conditioning
The invention relates to the technical field of air conditioning, in particular to an air conditioning indoor unit and a control method thereof. The air conditioning indoor unit and the control methodthereof aim to solve the problems that for an existing air conditioner, when the air supply amount is large, the supplied air is overcooled/overheated, and the noise is large. The air conditioning indoor unit comprises a body, an air return port and an air supply port are formed in the body, an air supply fan is arranged in the body, the air conditioning indoor unit further comprises an air supplement module, the air supplement module comprises a shell, a first air inlet is formed in the shell, the shell is internally provided with an induced draft fan, the air supplement module is arranged to be capable of being driven by the induced draft fan to introduce indoor air into the shell through the first air inlet, and the air is discharged to the air supply port through an air discharge portof the induced draft fan and is mixed with air discharged from the air supply port. According to the air conditioning indoor unit and the control method thereof, the phenomenon that the supplied airof the air conditioning indoor unit is overcooled/overheated is avoided, and the operation noise of the air conditioning indoor unit is reduced.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD

Environment-friendly production process of reclaimed rubber from tire

InactiveCN108178841ARealize desulfurization treatmentEliminate the grinding processPlastic recyclingMicrowaveFiltration
The invention provides an environment-friendly production process of reclaimed rubber from a tire. The process comprises the following steps: (1) waste rubber is smashed into waste rubber powder; (2)the waste rubber powder and reclaiming auxiliary materials are jointly conveyed to a microwave reclaimer, are subjected to microwave desulfurization and reclaiming treatment in a pipe of the microwavereclaimer and move from a feed port of the pipe to a discharge port under the conveying and mixing actions of a conveying screw in the pipe, wherein the reclaiming auxiliary materials comprise a reclaiming activator, a reclaiming softener and lemon essential oil, the reclaiming activator accounts for 0.2%-1.1% of the mass of the waste rubber powder, the reclaiming softener accounts for 2%-30% ofthe mass of the waste rubber powder, and the lemon essential oil accounts for 2%-3% of the mass of the waste rubber powder; (3) the rubber powder subjected to desulfurization treatment is refined andformed by a refiner, extrusion and filtration are performed, and the reclaimed rubber from the tire is obtained. The novel production process of the reclaimed rubber from the tire is energy-saving andenvironmentally friendly, and the produced reclaimed rubber has the advantages of high strength, stable quality and the like.
Owner:江苏华兴橡胶科技有限公司

High-temperature alloy cold material pulling two-segment type electric quenching softening annealing technology

ActiveCN106884077ASolve overheatingSolve the problem of broken tipElectrical resistance and conductanceElectricity
The invention discloses a two-segment type power electric heating softening annealing technology. An electric quenching device is used for replacing a continuous type roller bottom annealing furnace to carry out softening annealing on a high-temperature alloy cold drawing billet; after the cold drawing billet is subject to tip twisting, the section size of the tip is small, the resistance is large, the temperature rise of the portion is higher than that of the other portions, and overburning or tip breaking of the billet is caused. In order to solve the overburning and tip breaking problems, and avoid the yield decreasing generated by repeated tip cutting, a two-segment type power electric heating technology is adopted, low-power preheating is carried out, the twisted tip portion and the other portions of the billet are subject to temperature synchronous constant treatment, high-power electric heating is carried out, after the billet reaches the temperature, rapid water quenching is carried out, through the technology, the overburning or tip breaking problem of the tip twisting portion of the billet is effectively solved, and the yield of a large-specification high-temperature alloy cold drawing material is improved.
Owner:FUSHUN SPECIAL STEEL SHARES

Method and device for supplying heat carrier gas to preset combustion chamber of oxygen-enriched combustion internal heating type coal low-temperature dry distillation furnace

The invention discloses a heat carrier gas supplying method and device for a preset combustion chamber of an oxygen-enriched combustion internal heating type coal low-temperature dry distillation furnace, and belongs to the field of low-temperature dry distillation in the coal chemical industry. A furnace body is additionally arranged outside the dry distillation furnace to serve as a preset combustion chamber, oxygen-enriched air and low-temperature dry distillation gas are combusted in the combustion chamber, a certain amount of adjusting gas is added to enter the combustion chamber to be mixed with combustion products, the temperature of the combustion products is adjusted to a target value needed by dry distillation, and hot carrier gas is formed to enter the dry distillation furnace to provide heat for the low-temperature dry distillation process of coal. Wherein the form of the furnace body can be a distributed preset combustion chamber or a centralized preset combustion chamber. According to the invention, stable large-equivalence-ratio combustion of low-temperature dry distillation gas and oxygen-enriched air can be realized on the basis of an original dry distillation furnace, hot carrier gas with uniform temperature and components is provided for the dry distillation furnace, and the technical problems of non-uniform temperature at each fire hole, over-temperature and slag bonding at the fire hole are solved.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY

Cabinet type air conditioner and control method thereof

PendingCN110906439AImprove the phenomenon of overcooling/overheating of air supplyReduce noiseDucting arrangementsMechanical apparatusJet flowProcess engineering
The invention relates to the technical field of air conditioners and particularly relates to a cabinet air conditioner and a control method thereof. The invention aims to solve the problem that an existing air conditioner has too cold or too hot air supply and large noise. For the above purpose, the cabinet type air conditioner of the present invention includes a cabinet, and a fan and a heat exchanger are set in the cabinet. The cabinet type air conditioner further includes an air mixing device, and the air mixing device includes a purification unit, an air guide unit and a jet unit. The purification unit includes a box body and a purification component. The box body is provided with a first air inlet and a first air outlet. The air guide unit includes a pipe body, the pipe body has a second air inlet and a second air outlet connected to the first air outlet, and an induced draft fan is arranged in the pipe body. The jet unit includes a cylinder, the cylinder has a third air inlet anda third air outlet connected to the second air inlet, and a jet channel is formed between the third air inlet and the third air outlet. The present invention can improve the phenomenon that the air supply of the air conditioner is too cold or too hot, and the operating noise of the air conditioner can be reduced.
Owner:QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD

Control system and control method for pumping and metering of easy-to-vaporize medium

The invention provides a control system for the pumping and metering of an easy-to-vaporize medium. The control system is characterized by comprising a control mainboard, a coder, a flow measurement converter, an electric control valve, an oil-gas separator, a frequency converter, a voltage control device, an oil monitor, an indication device, a magnetic pump and a magnetic pump motor, wherein the voltage control device, the frequency converter, the magnetic pump, the magnetic pump motor, the oil-gas separator, the electric control valve, the flow measurement converter, the coder, the control mainboard and the indication device are in signal connection in sequence; the control mainboard is also in signal connection with the voltage control device and the electric control valve respectively; the oil monitor is also connected with an easy-to-vaporize medium outlet; and an easy-to-vaporize medium storage device is also connected with the flow measuremen converter, the magnetic pump and the magnetic pump motor respectively. The invention also discloses a control method for the control system. By the control system and the control method, heat produced by the magnetic pump can be effectively reduced, the reliability of the magnetic pump can be improved, and the magnetic pump can be widely applied to the pumping and metering of the easy-to-vaporize medium.
Owner:FOSHAN HAIZHUORUI FLUID CONTROL ENG

Improved yarn guide device of computerized flat knitting machine

The invention provides an improved yarn guide device of a computerized flat knitting machine. The improved yarn guide device comprises a hanging plate, yarn guide ring groups and snap rings, wherein the whole hanging plate is of a right-angle plate structure, and hanging holes allowing the hanging plate to be hung on the lower edge of the outer wall of an operating table of the computerized flat knitting machine are formed in the vertical wall of the hanging plate; a vertical plate is vertically connected with the side wall of the front end of the hanging plate. According to the improved yarnguide device of the computerized flat knitting machine, a yarn feeding wheel and a shaft sleeve are arranged, the middle part of the shaft sleeve is of a hollow-out structure, the two ends of the shaft sleeve are connected through six connecting rods to form a hub-shaped structure, on one hand, stable strength can be provided for the shaft sleeve, on the other hand, the yarn can conveniently penetrate out, the yarn feeding wheel is fixedly mounted on a universal driving shaft in the shaft sleeve, and the lower ends of the snap rings are parallel to the outer arc surface of the yarn feeding wheel, so that the yarn can be tensioned and is prevented from winding when penetrating out of the yarn feeding wheel to be sent to a yarn carding wheel.
Owner:嘉兴明德机械有限公司
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