243results about How to "No overheating" patented technology

The invention discloses a pile main bolt manufacturing technique of a million kilowatt grade nuclear power station. The manufacturing technique includes material-selecting, melting, heating, forging, cooling, after-forging heat treatment, defect-detecting, and forging capability heat treating. When selecting the material, the microelement content of the materials is controlled, the heat preserving duration in the intermediate temperature stage is prolonged, the heat raising and the heat preserving duration in the high temperature stage are reduced, the distortion volume in the course of the forging is controlled between 30 percent and 70 percent, the forging rate reaches 5 above; after-forging heat treatment, ultrasonic defect detecting, and forging capacity heat treating are conducted when the forging is finished. The main bolt produced according to the manufacturing technique of the invention can improve the impact value under the circumstance that the intensity keeps unchanged, theproduct can meet the RCC-M standard requirements completely, and the reliability and the safety of the pile pressure container using the main bolt of the million kilowatt grade nuclear power station can be ensured.

The invention provides a methanation fluidized bed reactor which is equipment for performing reaction on CO and H2 to generate methane and water and performing reaction on CO2 and H2 to generate methane and water at a certain constant low temperature. The methanation fluidized bed reactor comprises a cylindrical shell and inner parts, wherein a primary gas distributor and a secondary gas distributor are arranged at the bottom, and a catalyst is filled to form a catalyst bed; a heat exchange device consisting of a plurality of groups of heat exchange tubes is arranged in the catalyst bed; the lower ends of the heat exchange tubes in each group are communicated with a water inlet header pipe which is communicated with a water outlet of a steam drum, and the upper ends of the heat exchange tubes in each group are communicated with a steam outlet header pipe which is communicated with a steam inlet of the steam drum. According to the methanation fluidized bed reactor, heat continuously released during methanation reaction can be timely transferred through another medium, and the reaction can be performed at the constant low temperature.

The invention provides a co-precipitation synthesis method for Na2/3Ni1/3Mn2/3O2 as an electrode material and a preparation method of a Na2/3Ni1/3Mn2/3O2 electrode. The co-precipitation synthesis method comprises the steps of (1) mixing a nickel source compound solution and a manganese source compound solution, then, violently stirring to prepare a mixed solution with the nickel-to-manganese molar ratio of (0.8-1.5):1, and meanwhile, adding a complexing agent to complex until the pH value of the solution is up to 7.5-8.5; (2) adding a precipitant for precipitating to obtain a precipitate, carrying out suction filtration on the obtained precipitate, washing and drying; (3) carrying out ball milling on the dried product and a sodium source compound with a stoichiometric ratio, and mixing for 3-10h; (4) placing the ball-milled mixture into a muffle furnace to pretreat and calcine at high temperature to obtain a final product, namely, Na2/3Ni1/3Mn2/3O2. Proved by an electrochemical test, the material provided by the invention has the specific discharge capacities of 195mAh/g (0.01C), 153mAh/g (0.05C), 84mAh/g (0.10C), 53mAh/g (0.20C) and 49mAh/g (0.50C) in a rate performance test. The co-precipitation synthesis method is wide in raw material source, easy to prepare, low in aqueous sodium ion electrolyte cost and friendly to environment.

The invention discloses a refrigerator condensation-preventing and heating control method and an application thereof. The refrigerator condensation-preventing and heating control method is characterized in that a condensation-preventing heater is arranged on the inner surface of the part needing condensation prevention of a refrigerator, and the condensation-preventing heater circularly works in a mode of performing heating for t2 seconds and not performing heating for t1 seconds to achieve the condensation-preventing function. By means of the refrigerator condensation-preventing and heating control method, the working mode of automatically adjusting the heater can be achieved under different environment temperatures and different using conditions, condensation cannot be produced on the condensation-preventing part, overheating is avoided, the using energy consumption of the refrigerator is effectively reduced, and the reliability and stability of the condensation-preventing function are improved.

A high temperature testing machine for gears comprises a gear transmission case used for testing the fatigue life of the gears, wherein the gears to be tested are installed in the gear transmission case, the gear transmission case is connected with a temperature control system, the temperature control system comprises a heating device and a control module of a temperature monitor device, the heating device is connected with the gear transmission case through a pipeline, the heating device conveys lubricating oil into the gear transmission case through the pipeline to heat and lubricate the gears to be tested in an oil bath mode so that the working condition of gears inside an aviation speed reducer can be simulated, and the lubricating oil is heated to reach the set temperature. The temperature monitor device is installed on the heating device to monitor the temperature of the lubricating oil in real time, temperature information is fed back to the control module, and then the heating temperature can be monitored and controlled. Long-time simulation testing under the high temperature can be carried out on the gears, the testing temperature is high, working time is long, the testing environment is more approximate to the actual working condition of the aviation gears, and testing results are more effective and credible.

The invention relates to a segmental pre-vulcanizing method of a sulfur tolerant shift catalyst in a multi-segment conversion process, particularly relates to a method for rapidly pre-vulcanizing cobalt-molybdenum-series sulfur tolerant shift catalysts and belongs to the technical field of pretreatment of the sulfur tolerant shift catalyst. According to the method, aiming at the situations of the temperature raising and the slow vulcanizing speed caused due to insufficient vulcanizing conditions, a segmental vulcanizing method is utilized, namely the rapid pre-vulcanizing of a first-segment furnace is reinforced to raise the temperature of a subsequent second-segment furnace; first-segment vulcanizing conditions are reinforced to guarantee the vulcanization of the catalyst so as to realize the rapid, efficient and complete vulcanization, meanwhile, the temperature of a subsequent second-segment bed is raised by high-temperature vulcanized gas in a rapid vulcanizing process, and the subsequent working segments are similarly processed, so that the vulcanizing and temperature raising time is greatly shortened, and the vulcanizing cost is lowered; by utilizing a circular vulcanizing manner, the emptying quantity is few, the overtemperature is avoided, the vulcanizing process is convenient and safe, the pollution is light, and the method has remarkable economic and social benefits.

The invention discloses a dendrobium officinale healthcare product with an auxiliary blood glucose reducing function. The dendrobium officinale healthcare product comprises the following raw materials in parts by weight: 35 to 45 parts of fresh dendrobium officinale bars, 1 to 2 parts of American ginseng, 2 to 4 parts of the root of kudzu vine, 2 to 4 parts of radix trichosanthis and 1 to 2 parts of fructus schizandrae. A preparation method for the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function comprises the following steps: weighing the raw materials; processing the fresh dendrobium officinale bars; processing the American ginseng; performing alcohol extracting; performing water extracting; drying; batching. According to the dendrobium officinale healthcare product with the auxiliary blood glucose reducing function disclosed by the invention, the raw material formula is from clinical practice under the guidance of the theory of traditional Chinese medicine; the herbal medicines in a prescription are concise and are high in pertinency; the medicines in a raw material formula can nourish yin, benefit qi, clear heat and promote the secretion of saliva or body fluid; the active ingredients of the medicines are easy to absorb and are favorable to play efficacy; the medicinal materials in the raw material formula have the homology of medicine and food, and have no toxic or side effect.

A fan drive (1) includes a drive shaft (6), a fluid friction clutch (2) as well as a fan (3). The fluid friction clutch (2) includes a drive disc (5) as well as a housing (4) having a front-end housing part (4a) and a rear-end housing part (4b). The housing (4) is journalled on a drive shaft (6) via at least one bearing (7). Air flows against the fluid friction clutch (2) and the fan (3) in flow direction (L). An air-conveying unit (13) is mounted in flow direction (L) behind the fluid friction clutch (2). The fan drive is especially for a motor vehicle.

The invention relates to a phase-change energy-storage radiator, and belongs to the field of new type energy, energy conservation and environmental protection. The phase-change energy-storage radiator is used for storage and controlled releasing of heat energy in multiple grades. The phase-change energy-storage radiator comprises an outer heat preservation box and an energy-storage unit; a natural convection radiating runner is formed between the energy-storage unit and a heat preservation shell; and the natural convection radiating runner is controlled to be opened and closed, and therefore timing accumulated storage and releasing of the energy can be achieved. Heat insulation and energy storage can be completely achieved in the energy storage process of the phase-change energy-storage radiator, and meanwhile radiating can be controlled in the storage process. The device is large in energy-storage volume and small in size. According to a specially developed and allocated mixed chlorinated paraffin low-temperature phase-change energy-storage material, the energy-storage temperature scope is appropriate, the material is non-toxic and free of chemical changes, the energy-storage temperature scope and the heat release amount are not changed after repeated utilization, undercooling and overheating phenomena are avoided, and both the physical and chemical property and the reliability are excellent.

The present invention provides the technological scheme of soft started winch with two stages of transmission planet gear train. The technological scheme includes one motor, one planet gear transmission mechanism, and one brake. It features the planet gear transmission mechanism including one first planet gear transmission mechanism and one second planet gear transmission mechanism; the successive connection of the motor output shaft, the first planet input shaft and the first planet central gear; the successive connection of the first planet carrier, the second planet input shaft and the second planet central gear; the second planet carrier connected to the output shaft; the successive meshing of the second planet casing ring gear, the transition gear and the braking gear; The braking shaft connected to the water cooled disc brake; and the coaxiality of the motor output shaft, the first planet input shaft, the second planet input shaft and the output shaft.

The invention provides a distribution hydraulic system of pumping equipment, which comprises a hydraulic pump, a change valve, a check valve, an accumulator and a pressure control assembly. The distribution hydraulic system comprises a working mode and a heating mode, wherein under the heating mode, the hydraulic pump can drive hydraulic oil to overflow through the pressure control assembly, so that hydraulic energy is converted into heat energy, and then the temperature of the hydraulic oil can be rised by the heat energy. The invention also provides the pumping equipment and a heating method thereof.

The invention discloses a charging system and a charging circuit for batteries, as well as a method for controlling charging of the battery. The battery charging system comprises a charging switch for conducting charging current to the battery, a first and a second amplifiers coupled to the charging switch. The first amplifier is used for regulating the charging current according to the power consumption of the charging switch. The second amplifier is used for regulating the charging current according to the voltage of the battery. When the voltage of the battery is less than the predetermined voltage threshold, the charging current through the charging switch is regulated by the first amplifier, so that the power consumption of the charging switch is maintained constant. When the voltageof the battery is larger than the predetermined voltage threshold, the charging current through the charging switch is regulated by the second amplifier, so that the voltage of the battery is maintained constant. Compared with the prior art, during the entire charging process, overheating phenomenon will not occur in the battery charging system even if the difference between the charging power voltage and the battery voltage is relatively large, so that the charging efficiency is improved.

The invention provides a homogenizing heat treatment technology for eliminating the Al-Cu-Mg-Si-Mn alloy casting crystal phase. The homogenization technology comprises the steps that an Al-Cu-Mg-Si-Mn alloy ingot is placed into a furnace, is heated to 470-480 DEG C at the speed of 15-20 DEG C/min, is subjected to heat preservation for 8-12h, then is subjected to furnace cooling to 250-300 DEG C, and is subjected to air cooling to the room temperature; then the ingot is placed into a heat preservation furnace with the temperature being 510-520 DEG C and subjected to heat preservation for 18-24h; and finally, the ingot is subjected to air cooling to the room temperature. According to the homogenizing heat treatment technology, the homogenization problem that Al-Cu-Mg series alloy ingots containing a high amount of Si, Fe and Mn are high in melting point, so that a complex second phase is difficult to eliminate is solved, the technology is simple and convenient to operate, the feasible homogenizing heat treatment scheme is provided for the various Al-Cu-Mg series alloy ingots containing a high amount of Si, Fe and Mn, and industrial production is facilitated.

The invention discloses a cold-charge heating method of a bearing steel continuous casting billet, which comprises a preheating section I, a preheating section II, a heating section I, a heating section II and a soaking section. On the premise of not generating overburning and surface crack and ensuring the carbide uniformity to reach the standard, the method satisfies the cold-charge heating and rolling production of the bearing steel continuous casting billet.

The invention provides a trigger and a generator voltage regulator. The trigger comprises a comparison unit, which is connected with a power supply end, ground and a switch unit and is used for outputting a first voltage to the switch unit when the voltage at an in-phase input end is larger than that of an inverse-phase input end, and outputting a second voltage to the switch unit when the voltage at the in-phase input end is smaller than that of the inverse-phase input end; the switch unit, which is connected with the ground or the positive pole of a power supply and a trigger control end, and is used for enabling the control end to be conducted with the ground under the control of the comparison unit, or enabling the control end to the conducted with the positive pole of the power supply; and a feedback unit, which is connected with the control end and the inverse-phase input end of the comparison unit, and is used for positively feeding back the signal of the control end to the inverse-phase input end of the comparison unit. When the trigger is applied to the voltage regulator, integration of multiple functions of excitation fixed-frequency triggering, immediate overvoltage cutting off and over-current protection is realized; and a sampling circuit does not need a capacitor, and synchronous detection and overvoltage excitation cut off are realized, and overtime overvoltage excitation does not occur, so that the effects of stable voltage, accurate adjustment and being safe and reliable are achieved, and the service life of the regulator and the service life of a generator are prolonged.

The invention relates to a motor positive/negative rotation circuit for an eco-house, which comprises two input ends (PWM1, PWM2), six triodes (Q1 to Q6), four diodes (D1 to D2), eight resistors (R1 to R8) and two optical couplers (O1, O2) in a connection mode. The circuit of the invention has the beneficial effects that the motor positive/negative rotation circuit improves the intelligence degree of the eco-house and enables operation to be more visual and convenient on the premise of guaranteeing practicability, safety and reliability.

The invention discloses a band-gap reference circuit with second-order curvature compensation, which counteracts a second-order item in VBE through approximate voltage replication, so that the temperature drift of band-gap voltage is lower. The conversion circuit comprises a starting circuit module, a PTAT current generation module, a CTAT current generation module, an output module and a thermal turn-off module. The starting circuit module helps a circuit to be separated from a degenerate working point, and normal work of other modules is guaranteed; the PTAT current generation module and the CTAT current generation module generate positive temperature coefficient current and negative temperature coefficient current respectively and gather the positive temperature coefficient current and the negative temperature coefficient current to the output module, and meanwhile the CTAT current generation module counteracts a second-order term in VBE through approximate voltage copy. The output module generates different band-gap reference voltages by using resistance voltage division to supply power to the chip; the thermal turn-off module provides a hysteresis effect and protects the chip from an over-temperature phenomenon. The invention has the advantages of simple structure, low temperature drift, no operational amplifier and the like, and can be used for analog integrated circuits.

The invention relates to the technical field of bearing production equipment, in particular to a bearing intelligent precision forging automatic production line which comprises a feeding mechanism, anupsetting mechanism, a punching flattening mechanism, a continuous reaming mechanism, a finishing diameter mechanism and a discharging mechanism, wherein the feeding mechanism comprises a feeding component and a pushing component; the upsetting mechanism comprises an overturning component and an upsetting component; the overturning component is arranged at the tail end of the pushing component; the punching flattening mechanism is arranged by the side of the upsetting component; the continuous reaming mechanism comprises a conveying component and a continuous reaming component; the conveyingcomponent is arranged by the side of the punching flattening mechanism; the continuous reaming component is arranged at the tail end of the conveying component; the finishing diameter mechanism is arranged at the tail end of the continuous reaming component; and the discharging mechanism is arranged at the tail end of the finishing diameter mechanism. The bearing intelligent precision forging automatic production line can realize automatic processing of bearing precision forging, lowers the labor intensity, shortens the blank transferring distance, reduces the temperature differences of different processing parts of the blank, and improves the production efficiency and the bearing precision.

The invention provides an electromagnetic pulse protecting device. The electromagnetic pulse protecting device comprises an electromagnetic pulse protecting module and an electromagnetic pulse detecting module which are integrally designed. The electromagnetic pulse protecting module comprises a voltage protecting unit and a current protecting unit, wherein the voltage protecting unit clamps voltage to be smaller than or equal to a preset voltage value when the voltage applied to the electromagnetic pulse protecting module exceeds the preset voltage value, and the current protecting unit cuts off a circuit of the current protecting unit to carry out over-current protection on a protected circuit when a current flowing through the electromagnetic pulse protecting module exceeds a preset current value. The electromagnetic pulse detecting module is used for detecting electromagnetic pulses acted on the electromagnetic pulse protecting module and generating a signal of a detected result. As the current protecting unit for limiting the passing rated current and a low-temperature welding spot with designed melting temperature are effectively combined, the electromagnetic pulse protecting module has the function of overheating and over-current open circuit protection for the internal integrated voltage protecting unit and can protect the internal voltage protecting unit in time, and the safety of rear-end electric equipment can be protected.