34results about How to "Controllable heating" patented technology

The invention discloses a laser welding method for dissimilar metals, which is used for welding a high-melting-point metal workpiece and a low-melting-point metal workpiece. A gap is formed between the high-melting-point metal workpiece and the low-melting-point metal workpiece, and a laser beam irradiates from one side of the high-melting-point metal workpiece to one side of the low-melting-point metal workpiece to realize welding, so that low-melting-point metal vapor is easily volatilized, a combining part between the two workpieces is more uniformly and controllably heated, heat is more reasonably distributed, and the phenomena of splashing, perforating and the like can be avoided.

The present invention relates to an energy circulation air-conditioner. It includes the following several portions: energy converter and energy diffusion device connected with positive end of the described energy converter. It is characterized by that it also includes an energy storage device capable of making energy interchange with negative end of the described energy converter, the described energy storage device includes a box body for holding energy interchange agent, and on the circuit of the described energy converter a change-over switch is set, said change-over switch can make current direction be reversed. Besides, said invention also provides the working principle of said energy conversion air conditioner and its concrete operation method.

The invention discloses a preparation method of a titanium-niobium-zirconium-based hydroxyapatite biological composite material and belongs to the field of biomaterial preparation. The composite material of the invention employs titanium-niobium-zirconium alloy as a matrix, and hydroxyapatite as a bio-ceramic; and the weight of hydroxyapatite is 10-25% of that of the titanium alloy. The preparation process is as follows: filling a hydroxyapatite powder and a titanium alloy powder into a mill pot, sealing by alcohol, vacuumizing to 20-30Pa, milling for 6-8 h and drying in a vacuum oven; filling the dry powder into a graphite mold for cold forming; and finally carrying out spark plasma sintering with the sintering temperature at 1100 DEG C-1200 DEG C, first heating to 1000 DEG C by heating rate of in 100 DEG C / min, then heating to the sintering temperature by 25-50 DEG C / min and insulating for 6-10min with the pressure of 50-60MPa. The prepared biological composite material has elastic modulus of 25.4-45GPa, and has good mechanical properties and biocompatibility. The method of the invention is simple in process and low in production cost.

A double-CFB (circulating fluidized bed) reaction-regeneration system and method to prepare arenes with synthetic gas are provided. The system herein comprises an aromatization reactor and a catalystregeneration reactor which are connected with each other through a pipeline; the aromatization reactor comprises a first catalyst filling area and a second catalyst filling area; the catalyst regeneration reactor includes a fourth catalyst filling area and a third catalyst filling area; the aromatization reactor is filled with a hydrocarbon synthetic catalyst and an aromatization catalyst; under the action of a flow of gas, the hydrocarbon synthetic catalyst stays mainly in the area below, and the aromatization catalyst stays mainly in the area above. A regeneration method is also disclosed, including: after the aromatization catalyst is inactive, allowing the aromatization catalyst to enter a low-temperature hypoxic area of the catalyst regeneration reactor and then enter a high-temperature hyperoxic area of the catalyst regeneration reactor. The system and method herein have the advantages that controlling at different temperatures is achieved and catalyst design is less difficult.

The invention belongs to the technical field of underground coal gasification, and particularly relates to an underground interlayer type coal in-situ gasification mining system and a construction method thereof. According to the gasification mining system and construction method thereof, a pre-control system is used for injecting a flame retardant to moisten coal, and the structure of a gasification system is controlled in advance; a heating vertical shaft is drilled into a coal seam lower base plate rock stratum, combustion equipment is arranged to heat the lower base plate rock stratum, coal is combusted to generate coal gas through the thermal conductivity of the lower base plate rock stratum, and then a gas collecting system collects the coal gas and conveys the coal gas to the ground; in the coal bed gasification process, the coal bed temperature and the lower base plate rock stratum stress are monitored; heating equipment is arranged in the coal seam lower base plate rock stratum, and disturbance to the coal seam is reduced; and the high-temperature-resistant coal wall is reserved by utilizing a pre-control system, so that the air tightness of a gasification cavity is improved, the coal seam is heated more uniformly and controllably, an ideal temperature field is provided for sufficient combustion of the coal seam, and the quality of produced coal gas is improved.

The invention discloses a titanium alloy / calcium pyrophosphate surface bio-composite material and a preparation method thereof, and belongs to the field of biomedical materials. The surface composite material uses as titanium alloy as the matrix, and calcium pyrophosphate and zirconium as a bio-ceramic layer. The process comprises the steps of: subjecting the titanium, niobium and zirconium powder to mechanical alloying for 6-8h and drying to obtain a titanium alloy mixed powder; milling and mixing the calcium pyrophosphate with the zirconium powder for 1-2h and drying to obtain a mixed calcium pyrophosphate powder; and respectively filling the titanium alloy mixed powder and calcium pyrophosphate mixed powder into an upper layer and a lower layer of a graphite mold by means of an auxiliary device, compacting, and sintering in a plasma sintering furnace to obtain the titanium alloy / calcium pyrophosphate surface bio-composite material. The surface composite material prepared by the invention has good interface combination, suitable strength and excellent surface biological activity, reaches composite layer thickness of 10mm, and can be used in human hard tissue replacement and repair. The manufacturing process is clean, simple in process, low in cost, and easy to achieve industrialization production.

The invention relates to a discharge device of a medicine frying pan used for Chinese herbal medicine processing, comprising a discharge hand wheel, a discharge worm, a discharge turbine and a shaft sleeve, wherein the shaft sleeve is fixedly connected with a support, the discharge worm is connected into the shaft sleeve by a bearing, the discharge hand wheel is arranged at one end of the discharge worm, the discharge worm is meshed with the discharge turbine, and the discharge turbine is arranged on a rotating shaft. The discharge worm is rotated by rotating the discharge hand wheel, so thatthe discharge turbine rotates; the discharge turbine is arranged on the rotating shaft and is connected with the rotating shaft by a bearing, so that the rotating shaft can be driven to rotate by therotation of the discharge turbine, so that a pan inclines laterally to pour fried Chinese herbal medicine out of the pan, thus realizing the aim of automatically discharging.

The invention relates to a medicine frying pan used for Chinese herbal medicine processing. The pan is of a hemispherical structure with an opening at the upper end and is a double-layer pan, an innerchamber is formed between an inner layer and an outer layer, rotating shafts are arranged at two sides of the pan, the rotating shafts are hollow rotating shafts, the hollow rotating shafts are communicated with the inner chamber of the pan and are connected with a support by bearings, the rotating shaft at one side of the pan is connected with an oil inlet pipe, the rotating shaft at the other side of the pan is connected with an oil return pipe, a discharge device is arranged on the support, the discharge device is connected with the rotating shaft at one side of the pan, a support plate isarranged on the pan, two ends of the support plate are in fastened connection with the opening at the upper end of the pan, a stirring device and an exhaust device are arranged on the support plate,a pan cover is arranged at each of two sides of the support plate, the pan covers are hinged with the support plate, and a heating device is arranged outside the pan. The Chinese herbal medicine in the pan is heated by utilizing heat conducting oil, and is stirred constantly in the frying process, so as to prevent the Chinese herbal medicine from being burnt; and the exhaust device is arranged onthe pan cover, and is used for pumping away smoke generated in the important drying process.

The invention discloses a low-temperature-resistant low-frequency heating device for transformers. The low-temperature-resistant low-frequency heating device for the transformers comprises a rectifying module, a filtering capacitor, an inversion module, a temperature measurement unit, a control element, a heating element and a cooling element, wherein the rectifying module, the filtering capacitor and the inversion module form a low-frequency heating device body, the heating element and the cooling element are connected with the control element, the output ends of the heating element and the cooling element are connected with the low-frequency heating device body, the temperature measurement unit is used for detecting temperatures of the rectifying module, the filtering capacitor and the inversion module and sending temperature information to the control element, the control element is used for displaying temperature values and sending control signals, and the heating element and the cooling element are used for heating or cooling the low-frequency heating device body according to the control signals. The low-temperature-resistant low-frequency heating device for the transformers can be used for start and operation of the transformers in high-cold and even gelid environments.

The invention discloses a defrosting method and device for evaporating a defrosted refrigerant through a special evaporator. The defrosting method comprises the following steps: the refrigerant in a main refrigeration pipeline is divided into the to-be-defrosted evaporator, and the divided refrigerant serves as a defrosting medium to release heat to melt frost on the evaporator; the defrosted refrigerant is conveyed into the evaporator special for conducting evaporative heat absorption on the defrosted evaporator to form an independent evaporative heat absorption route; and the evaporated refrigerant in the special evaporator is conveyed back to a compressor for circulation work. According to the defrosting method, by adopting the special evaporator to conduct uniform evaporative refrigeration on the defrosted refrigerant, the evaporation area of a refrigeration system is increased, thus the evaporation temperature of the refrigeration system during defrosting is not lower than the evaporation temperature during no frosting, and the refrigerating capacity of the system is improved; and adjustability is high during exhausting of the compressor for defrosting, the degree of superheatis easy to control, meanwhile the refrigerant can stably and continuously work, and the stability of the system is high.

The invention relates to an environment-friendly indirect type roller heating device with heat preservation. The environment-friendly indirect type roller heating device with heat preservation comprises a heat preservation cover (2) and a roller (1) arranged in the heat preservation cover (2), wherein supporting wheels (9) which support and rotate the rotation of the roller (1) are arranged on theouter wall of the roller (1); a wire heater (5) is arranged on the outer wall of the roller (1), and the wire heater (5) is distributed on the roller (1) in a multi-point mode; and material guide blades (10) for stirring materials are arranged in the roller (1). A double-layer cylinder structure is adopted in the heating roller, an outer cylinder (provided with a barrel cover) is used for heat preservation, and an inner cylinder is used for heating. An external type is adopted in heating, heating units are arranged in a multi-point mode, a cylinder body is uniformly heated, and an asphalt mixture is heated through conduction and radiation, so that the temperature of the regenerated asphalt mixture is uniform, the gradation and the asphalt-aggregate ratio do not change obviously, and the quality of the asphalt mixture is ensured to a greater extent.

The invention relates to an automatic rotating temperature control frying pan, and belongs to the technical field of food processing equipment. The automatic rotating temperature control frying pan comprises a shell and a pan body, a rotating driving mechanism, a combustion mechanism, a supporting mechanism and a temperature control assembly are arranged in the shell, the supporting mechanism comprises a supporting sleeve and a rotating shaft rotationally assembled in the supporting sleeve through a fixed bearing, and the rotating shaft is in transmission connection with the rotating driving mechanism; the temperature control assembly comprises a temperature display meter, an ignition controller, a temperature probe and a conductive slip ring; the temperature display meter is used for displaying the real-time temperature of the surface of the pot body. The temperature probe makes contact with the surface of the pot body to detect the real-time temperature of the surface of the pot body; and the ignition controller controls the combustion mechanism to be started when the rotary driving mechanism acts, and controls the combustion mechanism to be closed when a numerical value displayed by the temperature display meter reaches a set temperature. Uniform heating of the pot body and control of the surface temperature of the pot body are well combined through the rotary driving mechanism and the temperature control assembly, so that the surface temperature of the pot body is controllable, and the taste of food is guaranteed.

The invention provides a roller-type tobacco feeding machine with a composite-type heating system. The roller-type tobacco feeding machine comprises a machine frame, a material conveying roller slantwise installed on the machine frame, a transmission device and a hot air circulating system installed on the material conveying roller. The higher side of the material conveying roller is provided witha feeding chamber, and the lower side is provided with a discharging port. A roller wall of the material conveying roller is of a double-layer structure, and a steam heat-radiating tube is arranged in an interlayer. An inlet and an outlet of the steam heat-radiating tube are arranged outside the roller wall. The discharging port of the material conveying roller is provided with a moisture removing chamber. The discharging port is placed at the lower end of the moisture removing chamber, and the upper part of the moisture removing chamber is connected with a moisture removing pipe and a moisture removing fan. The roller-type tobacco feeding machine does not affect material moisture in a heating process, and a material is more uniformly heated, and controlled. A material adhesion quantity of the roller wall is effectively reduced, and labor intensity of an operator is reduced in a maintaining process.

The invention relates to the technical field of electric devices, in particular to magnetic heating equipment, which comprises a rotary table, a motor, a metal heating body and a heat conduction bar, wherein a plurality of magnets are symmetrically and circularly distributed on the rotary table in a way that south poles and north poles of the magnets are alternately arranged; a rotating shaft is arranged below the centre of the rotary table and is driven by the motor; and the metal heating body is positioned above the rotary table and is connected with the heat conduction bar through a hot conducting wire. The magnetic heating equipment has the advantages of simple structure, convenience in installation, low energy consumption, controllable heating rate, stable heat supply, wide application range and the like.

The invention discloses a three-microwave multi-wheel cooperation type coiled material paving vehicle which comprises a trolley body, a rolling device assembly, an oil coating device assembly, a microwave heating device and a power supply assembly are installed on the trolley body, the trolley body comprises a trolley frame, universal wheels are installed at the four corners of the bottom face of the trolley frame, and a trolley handle is installed at the rear end of the trolley frame. A gear shifting adjusting rod and a frequency conversion control wheel are installed on the portion, below the handlebar, of the trolley frame, a placement frame is fixed to the middle of the top face of the trolley frame, a waterproof roll is installed on the inner side of the lower portion of the placement frame, the top side of the placement frame is rotationally connected with a guide roller, and a rolling roller is installed on the lower side of the waterproof roll. When waterproof coiled material paving is carried out, working can be started only by turning on a power source to push the trolley, no technical requirement for constructors exists, compared with traditional flaming heating, microwave heating is safer and more environmentally friendly, temperature rising is controllable, heating is uniform, and the coiled material paving quality is greatly improved.

The invention discloses a heat-controllable energy-saving environment-friendly fuel furnace. The fuel furnace comprises a fuel furnace shell and a temperature sensor arranged in the fuel furnace shell, wherein side baffles are fixedly connected to two sides of the top of the fuel furnace shell, a rear side baffle is fixedly connected between the two side baffles at the top of the fuel furnace shell, cooking ranges are fixedly connected between the rear side baffle and the two side baffles on two sides on the top of the fuel furnace shell, and switches are arranged on the front surface, corresponding to the cooking ranges, of the fuel furnace shell. The heat-controllable energy-saving environment-friendly fuel furnace belongs to the technical field of energy-saving environment-friendly fuelfurnaces. According to the heat-controllable energy-saving environment-friendly fuel furnace, the problem that the heat cannot be controlled by virtue of an existing energy-saving environment-friendly fuel furnace is solved, the situation that the heat produced by the energy-saving environment-friendly fuel furnace cannot be controlled according to the use demands is well avoided, the use of a user is greatly facilitated, and the normal use effect is guaranteed.

The invention discloses a concentric thin-wall steel pipe welding machine. The concentric thin-wall steel pipe welding machine comprises a welding column and a plurality of welding heads, wherein thewelding column is vertical arranged, provided with a cylindrical outer wall, and is used for sleeving two welded steel pipes, and the welding columns are horizontally arranged, and are distributed inan annular array by taking a center axis of the welding column as the center so as to realize simultaneous gathering and dispersion; and the welding head and the welding columns are connected to a positive electrode and a negative electrode of a power supply respectively. When all the welding heads are gathered by taking the center axis of the welding column as the center until the front ends of the welding heads are in contact with the welded steel pipes located on the periphery, the welding heads are connected with the welding column through the welded steel pipes, a circuit is closed, and electric welding of the welded steel pipes is realized by utilizing the resistance heat at the welding position; and the heat generated at the welding position can be adjusted by controlling the welding current and the duration of the welding head being in contact with the welded steel pipes by the concentric thin-wall steel pipe welding machine, and the welded steel pipes are prevented from beingpenetrated by excessive heat of the welding position of the welded steel pipes.