55results about How to "High heating power" patented technology

The invention discloses a cooling system and method of an airborne heating element based on air expansion refrigeration, and belongs to the field of airborne equipment cooling. The cooling system comprises a high heat-flow heating element spray cooling circulation subsystem, an air expansion refrigeration circulation subsystem and a regenerator (7), wherein the high heat-flow heating element spray cooling circulation subsystem comprises a buffer tank (8), a circulation pump (9), a filter (10), a flow regulating valve (11), a spray chamber (14) and a bypass valve (15); the air expansion refrigeration circulation subsystem comprises a primary heat exchanger (2), a secondary heat exchanger (4), a water separator (5), a turbine (6) and a fan (16). The system can achieve rapid cooling of high heat-flow heating element, and achieve the purpose of circulation cooling for multiple times through the regenerator; an intermediate regenerator structure makes full use of the characteristics of large working time intervals of the heating element and large phase change latent heat of phase change materials, greatly reduces the volume of system equipment, and meets the requirements of airborne equipment.

The invention discloses a cooling system and method of airborne heating elements based on evaporative refrigeration, and belongs to the field of cooling airborne equipment. The cooling system comprises a spray cooling cycle subsystem of high heat-flow heating elements, an evaporative refrigeration cycle subsystem, and a cold accumulator (5) for connecting the spray cooling cycle subsystem and the evaporative refrigeration cycle subsystem, wherein the spray cooling cycle subsystem of high heat-flow heating elements comprises a buffer tank (6), a circulating pump (7), a filter (8), a flow regulating valve (9), a spray cavity (12) and a bypass valve (13); the evaporative refrigeration cycle subsystem comprises a condenser (1), a heat regenerator (3), an expansion valve (4) and a compressor (14). Through adoption of the cooling system, the rapid heat dissipation of the high heat-flow heating elements can be realized, and the purpose of repeated circular heat dissipation is achieved through the cold accumulator; besides, the cold accumulator is arranged in the middle, the working time intervals of the heating elements and the characteristic of high latent heat of phase-change materials are fully utilized, so that the volume of the equipment of the system is greatly reduced, and the requirements of airborne equipment are satisfied.

The invention discloses a sleet melting method suitable for a power transmission line with multiple bundled conductors. The method comprises the following steps: (1). 2-4 sleet melting switches controlled by an electric operating mechanism are arranged at the connection places between a transformer station or a converter station and the power transmission line with the multiple bundled conductors; (2). suspension string insulation, tension string insulation, mid span and jumper insulation are adopted at the power transmission line side to insulate all sub-conductors of the bundle conductors; (3). when the conductors are covered by ice, one or more sleet melting switches are switched off to disconnect the bundled conductors communicated with the sleet melting switches, thus improving the current density of the communicated multiple bundled conductors and improving the calorific value of the communicated conductors to melt ice; and (4). the step (3) is repeated in the same manner to melt ice covering the bundled conductors. By the method, the sleet melting device has the advantages of simple structure, high reliability, and low investment cost; the normal operation mode of the power transmission line is switched to the sleet melting mode in a simple, safe and reliable manner, which has rare impact on the normal operation of a power grid.

The invention discloses a method for calculating bituminous pavement heating power control in a hot in place recycling process, and aims at providing reliable basis for the bituminous pavement heating power control in the hot in place recycling process through researching the influences, on the bituminous pavement temperature fields, of heating power. An adopted technical scheme is that the method comprises the following steps: 1) establishing a bituminous pavement unsteady state heat conduction model; 2) establishing and simplifying a bituminous pavement unsteady state heat conduction equation; 3) solving the bituminous pavement unsteady state heat conduction equation; 4) simulating bituminous pavement unsteady state heat conduction. According to the method, the relationship between the heating power and the temperature rising characteristics, heating times and thermal power of bituminous mixtures in the bituminous pavement heating link of a bituminous pavement hot in place recycling process is deeply researched on the basis of a heat transfer theory, so as to provide references for the bituminous pavement heating power control.

The invention relates to the technical field of sensor manufacturing, and discloses a coating spray head with more uniform spraying and more sufficient mixing functions. The coating spray head comprises a shell, a transmission shaft is rotatably connected to the circle center of the shell, a support plate is fixedly connected to the bottom end of the transmission shaft, a rotary drum is fixedly connected to the side surface of the support plate, telescopic rods are fixedly connected to the surface of the rotary drum, push rods are fixedly connected to the interiors of the telescopic rods, metal contacts are fixedly connected to the end parts of the push rods, resistance strips are slidably connected to the side faces of the metal contacts, and stirring rods are fixedly connected to the ends, away from the rotary drum, of the telescopic rods. The telescopic rods stretch out under the action of centrifugal force, so that the resistance of electric heating wires connected into the interior is reduced, the heating power of the electric heating wires is increased, the end parts of the telescopic rods are fixedly connected to the stirring rods so that an internal solution can be heated during stirring work, the adhesion of the coating solution is prevented, and a paint can be conveniently and smoothly sprayed out.

Disclosed is a manufacture method for a flexible large-area high-heat-power electrothermal film. The electrothermal film comprises a conductive film, a copper electrode and an insulation film protective layer. The electrothermal film is prepared by use of a carbon black/silicone rubber conductive composite material. The film has the advantages of flexibility and large area; the electrothermal film has the advantages of uniform heating and high heat power after being energized; and the electrothermal film is in the shape of a large-area film, has the advantages of large heat dissipation area and good heat-transfer property and can be fully contacted with a heated body for heat transfer. The electrotehrmal film provided by the invention can be used for indoor heating in a building and has the advantages of simple installation, relatively low initial investment, rapid heating and the like, thereby having a certain application value.

The invention relates to an intelligent far-infrared heating mattress which is characterized by comprising a mattress frame, an elastic permeable layer, a heating layer, a thermal insulation and reflection layer, a protective layer and a spring; the elastic permeable layer is fixed on the mattress frame, the heating layer is arranged under the elastic permeable layer, the thermal insulation and reflection layer is arranged under the heating layer, the protective layer is arranged under the thermal insulation and reflection layer, and the spring is arranged under the protective layer; the heating layer is formed by connecting a plurality of strip-shaped heating bodies in parallel through a lead; each of the plurality of strip-shaped heating bodies consists of a first insulating layer, a graphene heating layer, electrodes and a second insulating layer, the graphene heating layer is rectangular, the first insulating layer and the second insulating layer seal and wrap the graphene heatinglayer, the electrodes are connected with the two short sides of the graphene heating layer and are also connected with a power supply controller through the lead, and a temperature sensor is also connected with the power supply controller. The intelligent far-infrared heating mattress provided by the invention has the beneficial effects of high heating speed, high heating efficiency, energy conservation, environmental protection, lower manufacturing cost, good heat transfer effect and the like.

The invention relates to an armored heating cable, which comprises a metal sheath and an inorganic insulating layer, wherein the metal sheath comprises a seamless continuous stainless steel tube or a copper tube in which the inorganic insulating layer is arranged; a heating core wire is arranged in the inorganic insulating layer; the inorganic insulating layer comprises high purity, high temperature and electrofusion crystallized magnesia; and the heating core wire comprises one or more alloy heating wires. The armored heating cable of the invention has the advantages of adoption of mica isolating coating technology to substitute the traditional inorganic insulation filling technology, the improved rate of finished products and insulativity of the cable, and the greatly shorten manufacturing time of the finished products; and the invention can basically solve the aging problem, greatly prolong the service life, has good chemical stability, good mechanical property, and twisting resistance, extruding resistance, bending resistance, pulling resistance, friction resistance and general rough handling resistance.

The invention relates to a crystalline silicon ingot heater which comprises a top heater and a lateral heater. The lateral heater comprises a lateral upper heater and a lateral lower heater, the lateral upper heater and the top heater are serially connected to form a serial connection unit, and the serial connection unit and the lateral lower heater are independently connected with a power source.The lateral heater is divided into two parts, and a part is independently connected with the power source while the other part is serially connected with the top heater, so that respective heating power can be controlled conveniently in the process of crystal growing, the lateral heater can be flexibly controlled to radiate heat to a silicon material, and crystal growing time consumption and ingot period are optimized. The invention further provides a using method of the crystalline silicon ingot heater.

A 12kV/4000A high-current gas-insulated metal-enclosed switchgear overcomes the problems of complex structure, large size and low heat dissipation efficiency in the prior art, and is characterized in that a heat dissipation pipe is mounted on a gas tank shell to form a natural convection heat exchange structure, a top heat dissipation box is mounted at the top of the gas tank shell, and a top heat dissipation box is mounted at the bottom of the gas tank shell; the lower end of the main bus in the gas tank shell is connected with a direct-acting three-station double-set disconnecting switch, and the lower part of the direct-acting three-station double-set disconnecting switch is connected with an arc extinguish chamber moving end flexible connector. The beneficial effects of the utility model are that through the heat dissipation structure design of a plurality of components with large heat productivity, the temperature in the air chamber is reduced through natural convection in the closed air chamber, and the problem of large-current temperature rise is solved; the conductive contact area is multiplied through the plurality of flexible connection conductors, and the through-current capability is improved; the size of a single conductive part is reduced through double sets of isolating switches of each phase, and the requirement of 12 kV/4000 A large-current gas insulated metal-enclosed switchgear for the through-current capability is met.

The invention proposes an automatic temperature-control electric tracing band. The automatic temperature-control electric tracing band comprises a positive temperature coefficient (PTC) material core body, wherein a first main heat tracing wire core, a second main heat tracing wire core and an auxiliary heat tracing wire core are arranged in the PTC material and extend along a length direction of a cable, the first main heat tracing wire core, the second main heat tracing wire core and the auxiliary heat tracing wire core are arranged in parallel, the auxiliary heat tracing wire core is arranged between the first main heat tracing wire core and the second main heat tracing wire core, the first main heat tracing wire core is formed by twisting a first conductor and a first carbon fiber bundle, the second main heat tracing wire core is formed by twisting a second conductor and a second carbon fiber bundle, the auxiliary heat tracing wire core is formed by twisting a third conductor and a third carbon fiber bundle, an inner sheath insulation layer wraps the periphery of the PTC material core body, a waterproof and heat preservation layer wraps the periphery of the inner sheath insulation layer, a weaving shielding layer wraps the periphery of the waterproof and heat preservation layer, and an outer sheath layer wraps the periphery of the weaving shielding layer. The automatic temperature-control electric tracing band proposed by the invention is simple in structure and good in stability.

The invention relates to a resistance heating furnace which comprises a furnace body and at least one resistance heating element, wherein the resistance heating element comprises a binding post. A protective sleeve is sleeved outside the binding post, and the resistance heating element further comprises an upper lifting flange, a lifting wire hanging insulation framework, a resistance wire and lifting rods, wherein the upper lifting flange is fixed at the lower end of the protective sleeve, two lifting rod holes are formed in the columnar lifting wire hanging insulation framework, the two lifting rods are located in the two lifting rod holes respectively, the resistance wire is wound on the outer wall of the lifting wire hanging insulation framework, the lifting wire hanging insulation framework and the upper ends of the lifting rods are all fixed on the lower surface of the upper lifting flange, one end of the resistance wire is communicated with the binding post, the other end of the resistance wire is communicated with the furnace body through the lifting rods, at least one lower lifting flange is arranged on the outer wall of the furnace body, and the upper lifting flange of each resistance heating element is fixed with one lower lifting flange. According to the resistance heating furnace, each heating element is small in size and light in weight, each heating element is independently installed, maintenance is simple, large-scale lifting devices are not required, and maintenance cost is low.

The invention belongs to the technical field of hybrid vehicles, and discloses a control system and method for a power battery of a plug-in hybrid vehicle. The system comprises: an engine cooling loop which is provided with an engine and a radiator III; a motor cooling loop which is provided with a power motor body and a radiator III; a battery cooling loop which is provided with a power battery, a radiator III and a radiator II; a warm air loop which is provided with a radiator III, a radiator IV and a fan II; an air conditioner refrigerating circuit which is provided with a radiator II, a radiator V and an air conditioner compressor assembly, wherein the radiator V is connected with the fan II; and a passenger compartment, wherein the temperature is adjusted through the fan II. According to the system, an electric heating device of a high-voltage electric component is omitted, the power battery and the passenger compartment are heated under the condition that an engine is not started, and the system cost is reduced.

The invention relates to a magnetic-heating anti-plate device, wherein it comprises a heating tube sheathed on the oil pump rod and the magnet fixed on the inner wall of oil tube; the inner wall of heating tube has a metal tube with certain magnetic conductivity; and the neodymium iron boron magnetic steel will not degauss to prolong the service life. The invention can improve the oil flow via the magnetic function on the paraffin and the eddy heating of permanent straight generator, to reduce the pump resistance.

The invention discloses a laboratory reactor. The laboratory reactor comprises a reactor body, a stirring motor, a stirring shaft, stirring paddles, a heat insulating layer, a heating assembly, a charging opening and a discharging opening, wherein the charging opening is formed in the upside of the reactor body, and the discharging opening and a drain outlet are formed in the bottom of the reactorbody; the stirring motor is mounted on the top of the reactor body and is connected with the stirring shaft, the stirring shaft is located inside the reactor body, and the stirring paddles are mounted on the stirring shaft; the stirring paddles are arranged in parallel, end parts of the stirring paddles are connected with scrapers, and the scrapers are in contact with the internal wall of the reactor body without extruding the internal wall of the reactor body; the heat insulating layer is arranged at the outer side of the reactor body, a water inlet is formed above the heat insulating layer,a water outlet is formed below the heat insulating layer, and the heating assembly is mounted inside the heat insulating layer; the heating assembly comprises a circuit mounting plate and a heating pipe; the heating pipe comprises a PTC ceramic heating core, a metal tube, a pin, insulating ceramics, a waterproof seal and heat dissipating fins; and the heat dissipating fins are arranged at the outer side of the metal tube. According to the laboratory reactor, the reactor body can be subjected to heating, heat preserving and cooling treatment, the heating is safe, the heating effect is good, and the heating efficiency is high.

A time-controlled intermittent life test method based on junction temperature real-time correction comprises the following steps that a sample is selected for a pre-test, temperature rise time of a junction temperature variable quantity, meeting a test requirement, of a specific device under driving power is determined, and the time when the junction temperature is reduced to an initial temperature is recorded; the temperature rise time measured by the pre-test is used as a temperature rise period of a cycle period, constant driving power is continuously applied in the temperature rise period,after the temperature rise period is finished, narrow pulse excitation is used for measuring an end point junction temperature of the device, and the temperature drop time measured by the pre-test isused as the temperature drop period for cooling the device; and after the temperature drop period is finished, if the junction temperature does not reach the initial temperature, a secondary temperature drop period is continued, wherein the next cycle period is equal to the sum of the time of the temperature drop period and the time of the secondary temperature drop period of the previous cycle period. In the invention, an intermittent working state of a component can be simulated more strictly, and an intermittent life test requirement can be met more accurately.

The invention discloses a single-conductor flexible high temperature heat tracing cable and relates to the technical field of a cable, in particular to a flexible high temperature heat tracing cable. The single-conductor flexible high temperature heat tracing cable comprises an insulated conductor. A heating body, an undersheath layer, a shielding layer and an outer sheath layer are sequentially arranged outside the insulated conductor. The insulated conductor comprises silver plated copper wires. An insulating layer is coated outside the silver plated copper wires. The single-conductor flexible high temperature heat tracing cable is uniform to emit heat, has ultralow full-length temperature difference, has low temperature resistance and high heating power, and is suitable for an industrial pipeline to convey crude oil, liquid industrial chemicals and industrial water.