145results about How to "Solve the problem of temperature rise" patented technology

The invention discloses an integrative rotatable type adsorber. The adsorber comprises a circular inner cylinder and a circular outer cylinder which have the same mandrel, wherein the middle of the inner cylinder is provided with a baffle plate. The structure of the integrative rotatable type adsorber is equivalent to that of a double-tank adsorber; the center of a top cover (29) of the inner cylinder is provided with a rotating shaft (32), and the rotating shaft (32) is connected with driving equipment by an outlet (3) of the rotating shaft on a top cover (7) of the outer cylinder; the inner side of a bottom cover (25) of the outer cylinder is provided with an annular roller groove (21) which has the same mandrel with the outer cylinder, and an outer layer of the bottom cover of the inner cylinder is provided with a roller (20) matched with the roller groove (21); and a cylinder body (9) of the outer cylinder is provided with a magnetron (27). The adsorption and the recovery of oil gas are realized by the rotatable type adsorber through utilizing the processes of microwave heating and low-vacuum integrated desorption. According to the adsorber, the integration of adsorption and desorption is realized, the structure is simple, and the miniaturization of equipment is realized.

The invention discloses a locked rotor frequency conversion control method and device for drive motors. By means of the locked rotor frequency conversion control method and device, entry and exit of locked rotor frequency conversion are judged through the locked rotor rotating speed zone bit and the locked rotor torque zone bit, and therefore the temperature rise problem of a drive controller in the blocked rotor process is effectively solved. Thus, the time spent when a drive motor outputs large torque is prolonged as much as possible, and the load requirement is guaranteed. Meanwhile, the entry time and the exit time of locked rotor frequency conversion are staggered, the vehicle shaking problem under the critical working condition is solved, and driving safety and comfort are ensured.

The invention discloses an oil gas adsorber which comprises an adsorber top cover (16), an adsorber main body (1) and an adsorber bottom cover (3) that are connected through bolts (14), wherein the adsorber top cover (16) is provided with an emptying hole (17), and the adsorber main body (1) comprises a composite adsorbing material (11) and a circulating water jacket (12); the circulating water jacket (12) is provided with a circulating water jacket water inlet (8) and a circulating water jacket water outlet (13); the adsorber bottom cover (3) is provided with an oil gas inlet (2), a drain outlet (4), a vacuum pump port (5), a pressure sensor (6) and a pressure meter (7); and the composite adsorbing material (11) is a mixture of foam metal and an adsorbing agent. In the invention, heat radiation is enhanced through the foam metal, the circulating cooling/heating water jackets is additionally arranged outside the oil gas adsorber to enhance heat transfer, thus the temperature rise problem in the adsorber and the temperature drop problem in a desorber can be effectively solved.

The invention discloses a double-redundancy six-phase moment motor for a precision instrument and device, and a control method thereof. The motor is an AC permanent magnetic synchronous servo motor, is formed by assembling stators and a rotor, and is characterized in that the stator and the rotor employ a double-stator and single-rotor structure. A double-stator structure is as follows: double stators employ a splicing type structure and are provided with two independent stator windings; the two independent stator windings share one permanent magnet; the housing of the motor stators is provided with cooling grooves, the two sides of the housing are provided with sealing grooves, through a cooling system, the operation temperature of the stator can be reduced, and the output power of the motor is improved; and the two independent stator windings are controlled by a control system so as to realize individual operation of one of the stator windings and parallel operation of the two stator windings. According to the invention, through double-redundancy control, when a certain control system fails, the other system can still work normally, such that the system reliability is improved. The motor and the method provided by the invention can also be applied to other high-precision instruments and devices.

The invention relates to high-pressure large-current dry compressed air insulated metal closed switch equipment, solving the problems of environment pollution and poor heat dissipation property when SF6 gas is used as an insulation medium. The switch equipment is characterized in that an upper seal plate, a left seal plate, a right seal plate and a back seal plate of a gas tank are provided with radiating fins; a three-station switch is connected with a solid sealed pole post through a copper connecting piece; a copper connecting radiating fin is installed outside the copper connecting piece; a radiating through hole is processed on the outlet end of the moving contact of the solid sealed pole post; the front part of the epoxy resin insulation shell of the solid sealed pole post is provided with a convection notch; an anti-cracking gap is reserved between the epoxy resin shell and the static contact end outlet seat of the solid sealed pole post; and a U-shaped radiating bus is mounted at the tail end of the solid sealed pole post. The equipment disclosed by the invention has the beneficial effects of improving the distribution of electric fields while realizing radiation, meeting the requirement of dry compressed air insulated metal closed equipment which takes clean and dry compressed air as an insulation medium and has the voltage of 40.5kV and current of more than 2000A and realizing energy conservation and environment protection.

The invention provides a diaphragm-free type device for circularly electrolyzing hypochlorous acid and sodium hypochlorite. The device comprises a water softener, a water storage tank, a sodium chloride storage tank, a water supply pump, a saline water conveying pump, a diaphragm-free type electrolytic cell, a hypochlorous acid and sodium hypochlorite storage tank and an electrical control system. The device is characterized in that the diaphragm-free type electrolytic cell is provided with a cooling electrolyte flow-in opening and an electrolyte flow-out opening; an electrolyte output pump, a heat exchanger and an electrolyte input pump are sequentially connected between the electrolyte flow-out opening and the cooling electrolyte flow-in opening; the electrical control system comprises a touch screen, a PLC control module and a rectifier; and control circuits are arranged among the PLC control module, the touch screen, the rectifier, the water softener, the water supply pump, the saline water conveying pump, a conductive electrode of the diaphragm-free type electrolytic cell, the heat exchanger, the electrolyte output pump and the electrolyte input pump. The diaphragm-free type device is high in electrolytic reaction speed, high in hypochlorous acid and sodium hypochlorite yield, high in conversion rate and low in running cost.

The invention relates to a photovoltaic power generation device, in particular to a photovoltaic power generation component junction box. The photovoltaic power generation component junction box adopts the following technical scheme that the photovoltaic power generation component junction box comprises a box body, a diode chip set provided with at least one bypass diode, a packaging body used for packaging the diode chip set, and radiating fins that are used for radiating the bypass diodes, are in electrical insulation with the bypass diodes, and extend out of the box body. According to the photovoltaic power generation component junction box, the heat of the bypass diodes is led out of the junction box, so that the radiating performance of the bypass diodes is improved, and the problem of temperature rise of the bypass diodes in the prior art is solved effectively.

The invention relates to a self-pretightening double-row tapered roller bearing which is mainly applied in the steel industry and is used on the roll of a rolling mill. The bearing comprises two single-race outer rings, an inner ring, precompression springs, a retainer and a roller. Eight to sixteen precompression springs are installed in grooves on the two end surfaces of each outer ring. The retainer, the roller and the inner ring form a double-row tapered inner assembly. The double-row tapered inner assembly and the single-race outer rings form a complete bearing. The inner ring is provided with an inclined key groove which is used to position a structure. The invention has the advantages that the axial loading requirement is well satisfied and the problems of uneasy clearance control, bearing inner ring creep, short service life and temperature rise are effectively solved.

A water-cooling pre-heating heating body comprises a heating pipe, a water outlet pipe and electrode clamping hoops. The heating pipe is a quartz pipe, the outer surface of the heating pipe is coated with an electric heating coating, the two ends of the electric heating coating are coated with electrodes, the electrode clamping hoops are arranged on the electrodes, and the heating pipe is connected with the water outlet pipe. The water-cooling pre-heating heating body is characterized in that the heating pipe is installed in a radiating shell, the radiating shell comprises at least one heating cavity and a pre-heating cavity, the two ends of the heating pipe are fixed to the inside of the heating cavity of the radiating shell through sealing rings, a water inlet of the pre-heating cavity is communicated with a water inlet pipe, and a water outlet of the pre-heating cavity is communicated with the heating pipe. The water-cooling pre-heating heating body is compact in structure and convenient to install; by means of a cold water pre-heating mode, heat radiation emitted outside by the heating pipe is collected, water is pre-heated, energy is saved, heat power is improved, the problem of temperature rising of the heating pipe is effectively solved, the power density of an electrothermal film can be increased and the size of the heating pipe is reduced.

The invention discloses a test system and method for influences of harmonic waves on the temperature rise and the loss of parallel capacitors. The method is characterized by including the following steps that first, a harmonic source is adjusted so that the harmonic source can give out a fundamental wave voltage equal to the rated voltage of the capacitors and harmonic voltages different in time number and content, and the temperature and the voltage and current values of the capacitors are observed and recorded; second, it is guaranteed that the total voltage effective value output by the harmonic source is equal to the rated voltage of the capacitors according to the constant-voltage method calculation formula, and the temperature and the voltage and current values of the capacitors are observed and recorded; third, it is guaranteed that the total fundamental wave and harmonic current effective value output by the harmonic source is equal to the rated current of the capacitors according to the constant-current calculation formula, and the temperature and the voltage and current values of the capacitors are observed and recorded. Through the system and method, the influences of harmonic waves on the temperature rise and the loss of the parallel capacitors can be scientifically and effectively tested, the change conditions of the temperature rise and the loss of the parallel capacitors under the condition of different harmonic waves are obtained, and test data are comprehensive and high in accuracy.

The invention relates to a heat conduction insulating adhesive tape and a preparation method thereof. The heat conduction insulating adhesive tape comprises a substrate layer, a heat conduction adhesive layer and a release film layer which are arranged successively from bottom to top, wherein the substrate layer is a non-woven fabric substrate or a composite fiber fabric substrate; and the heat conduction adhesive layer comprises an adhesive, a nanometer heat conduction filler, a heat stabilizer, an antioxidant, a plasticizer, a coupling agent and a solvent. As the non-woven cloth or compositefiber cloth is preferred as the material of the substrate layer, and together with the nanometer heat conduction filler used in the heat conduction adhesive layer, high insulation and high thermal conductivity of the adhesive tape are comprehensively realized; when a conventional insulating adhesive tape is replaced by the heat conduction insulating adhesive tape provided by the invention, both the insulation can be ensured and the problem of temperature rise of a device can be solved, the operation stability of a product can be improved, and the service life of the product can be prolonged;and meanwhile, the adhesive tape is simple in preparation method process, short in process procedure, common in use equipment, low in raw material price and applicable to on-batch production and use.

The invention relates to an automatic bearing bush boring mill system, and belongs to the field of boring mills. The automatic bearing bush boring mill system particularly comprises a feeding conveying belt, a cleaning machine, a cleaning manipulator, a machining conveying belt, a feeding manipulator, a mill body, a discharging conveying belt, a discharging manipulator, a storage disk, a sensor, a programmable logic controller (PLC) control module and an alarm module. The feeding conveying belt is used for conveying bearing bushes to the cleaning machine. After the cleaning machine cleans the bearing bushes, the cleaning manipulator places the bearing bushes onto the machining conveying belt. The machining conveying belt conveys the bearing bushes to the feeding device. The feeding manipulator is used for putting the bearing bushes on the machining conveying belt on the mill body. The mill body comprises a pushing air cylinder and a die fixing device. A blank die can be taken out and replaced conveniently and rapidly. After machining, a servo motor controls the blank die to move upwards. A second time of boring of the bearing bushes is not needed. A boring cutter can retreat in any position to prepare for the next cycle.

The invention discloses a nano-fluid based solar electricity and heat combined utilization device. A PV/T heat collecting plate, a heat exchange water tank, a first nano-fluid box, a first peristaltic pump, a first flow-meter and a first thermocouple are connected in sequence through a first pipeline to form a circle; and the PV/T heat collecting plate, the heat exchange water tank, a second nano-fluid box, a second peristaltic pump, a second thermocouple and a second flow-meter are connected in sequence through a second pipeline to form a circle. As the solar photoelectricity utilization and photo-thermal utilization are combined organically, the nano-fluid based solar electricity and heat combined utilization device not only solves the temperature rise problem of a solar cell panel, but also can utilize the afterheat generated by the solar radiation and accordingly increases the comprehensive utilization efficiency of the solar energy. In addition, as the nano-fluid has a selective absorption characteristic for the solar radiation, almost all the near infrared and infrared radiation can be absorbed, and the photoelectric conversion efficiency of a solar cell is further increased.

The invention discloses a uniaxial tension compression system. A hydraulic cylinder (7) is arranged just above a lower pressure head 6; a loading head (8) is arranged at the lower end of a piston of the hydraulic cylinder (7); a probe of a linear variable differential transformer (9) is downwards vertical and is contacted with the upper end of the piston of the hydraulic cylinder (7); the oil inlet of a servo valve (11) is connected with the oil outlet of a variable plunger type hydraulic pump (18); the oil return outlet of the servo valve (11) is connected with the oil return port of the variable plunger type hydraulic pump (18); a branch pipe (26) is connected to a second oil pipe (17'); the branch pipe (26) is connected with an oil nozzle (24) at the bottom of an energy accumulator shell (20); a capsule bag (22) is arranged in the energy accumulator shell (20); and the exterior of the capsule bag (22) is filled with hydraulic oil (25). According to the system disclosed by the invention, a fixture stress concentration effect is avoided, a test piece is completely in a stretched state in the test process, which is consistent with the experimental purpose, and the acquired test data is very intuitive, real and reliable.

The invention discloses a multifunctional safe guillotine which mainly comprises following circuits, opening and closing of the guillotine are identified by an opening and closing instruction and controlled by a control circuit so that opening and closing manners of the guillotine are restriction mode control. A zero-past pulse instruction signal is obtained by a zero-past sampling circuit, thereby an impact phenomenon of voltage and current is not generated on the circuit when the guillotine is opened or closed, and the instruction signal provides a count time for work time sequence of an arc suppression circuit and an operation circuit; an automatic switch between a contactless work mode and a contact work mode is timely done by a count control circuit, the arc suppression, operation circuits and a closing control circuit, so that the guillotine is in the contactless work mode when turning on and turning off power source to avoid generation of an impact phenomenon of electric arc and current; the guillotine is in the contact work mode when being in normal operation, thereby solving a problem of temperature increase during operation process. A safe locking function and a plurality of protection functions further increase safety and reliability for the usage of the guillotine.

The invention discloses a lockable magnetic powder clutch type automatic six-gear gearbox which comprises a lockable magnetic powder clutch and electric stud type joint devices of all gears. The lockable magnetic powder clutch and the electric stud type joint devices of all gears are controlled to be powered on and powered off, and thus gear shift control over all the gears is achieved. The lockable magnetic powder clutch type automatic six-gear gearbox has the beneficial effects of being high in transmission efficiency, compact in structure, capable of achieving dynamic power shift, free of mechanical or hydraulic gear shift components and the like.

The invention discloses a centrifugal compressor bearing with the center provided with a central hole. At least one row of gas supply holes are peripherally arranged on the bearing and communicated with the central hole, and gas chambers are arranged on the inner wall of the bearing at outlets of the gas supply holes. The centrifugal compressor bearing utilizes high-pressure gaseous refrigerant led out from a condenser to lubricate bearing kinematic pairs at two ends of a motor shaft, so that a compressor can simultaneously adapt to operations at extremely high speed and extremely low speed, operating range is enlarged, the refrigerant is utilized for cooling the bearing kinematic pairs, the problem of temperature rising of the bearing kinematic pairs is solved thoroughly, and operating stability is improved. Besides, the invention further discloses a centrifugal compressor using the bearing and an air conditioning system using the bearing.