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95results about How to "Reduce current intensity" patented technology

Novel method for increasing high linear speed and prolonging sealing life of static magnetic liquid

InactiveCN104534100AGuaranteed sealing conditionIncrease the magnetic field strengthEngine sealsPower flowEngineering
The invention provides a novel method for increasing high linear speed and prolonging the sealing life of static magnetic liquid, and belongs to the field of mechanical engineering sealing. The method solves the problem that the calorific value of magnetic liquid in a sealing gap of an existing magnetic liquid rotary sealing device is too high and accordingly service life is lowered, and solves the problem that in the static sealing process, a magnetic liquid agglomeration phenomenon occurs due to the action of a long-time stable strong magnetic field, and accordingly sealing performance is reduced. According to the method, outer cylindrical faces of N cylindrical permanent magnets (3) are sleeved with N iron core rings (9), and electromagnetic coils are wound around the outer cylindrical faces of the N cylindrical permanent magnets provided with the iron core rings. The electromagnetic coils are connected with an external power supply to generate an electromagnetic field; by changing the direction and the size of current and changing the magnetic field intensity applied to the magnetic liquid, problems existing when the magnetic liquid is used in rotation sealing of the high linear speed and static sealing can be solved; the iron core structure can increase the intensity of the electromagnetic field, improves the magnetism gathering effect and further prolongs the service life of the magnetic liquid.
Owner:BEIJING JIAOTONG UNIV

Subsea pipeline floating ball type flexible washing protection device

The invention discloses a subsea pipeline floating ball type flexible washing protection device. The subsea pipeline floating ball type flexible washing protection device is composed of three or more floating ball protection units, wherein each floating ball protection unit comprises a ballasting block body and a floating small ball; the ballasting block bodies and the floating small balls, and the floating small balls are connected by connection ropes; the floating ball protection units are distributed at the periphery of a subsea pipeline to form a protection layer similar with a porous screen plate. The device has lower construction cost and is very convenient to construct; the whole protection device can be directly thrown into water to construct after being positioned under the conditions that the water flow speed is smaller and the water depth is moderate; the volumes of the small balls are slowly expanded and become large under the water under the condition that the water flow speed or the water depth is larger, so that the offset distance of the whole device is reduced; the mounting precision is improved or the construction can be carried out at the position which has a certain distance from a mounting position; the positioned construction is realized under the action of water flow. The method can be used for effectively reducing the water flow speed at the periphery of silt, accelerating the starting speed of the silt, and improving the anti-washing capability of the silt at the periphery.
Owner:TIANJIN UNIV

Super-junction VDMOS device

The invention provides a super-junction VDMOS device comprising a first conductive type heavily doped semiconductor substrate, a metallized drain electrode, a first conductive type semiconductor column region and a second conductive type semiconductor column region. The first conductive type semiconductor column region and the second conductive type semiconductor column region are provided with three regions in which the doping concentration increases in sequence from bottom to top. The doping concentration of the P / N column uses a variable doping distribution which increases from bottom to top and the carrier lifetime of the JFET region is shortened by carrier lifetime control so that the current intensity flowing through the base region of the super-junction VDMOS uisng the structure canbe reduced, the conduction of the parasitic triodes inside the super-junction VDMOS can be effectively suppressed and the possibility of SEB of the device can be reduced. Meanwhile, the high doping concentration in the upper part of the P / N column forms a high barrier under the JFET region and the upper part of the P / N column so that the charge accumulation rate under the gate can be slowed downand the occurrence of SEGR can also be effectively suppressed through the carrier lifetime control of the JFET region.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1

Fruit-and-vegetable cultivating frame saving water resources

The invention discloses a water-saving fruit and vegetable cultivation frame, which comprises a fixed frame, a water pump is arranged on one side of the fixed frame, and a first water delivery pipe is fixedly connected to the top of the water pump, and the first water delivery pipe is far away from the water pump. One end of the second water delivery pipe is fixedly connected with a second water delivery pipe, and the end of the second water delivery pipe away from the first water delivery pipe penetrates the outer surface of the fixed frame and extends to the inside of the fixed frame, and the top of the second water delivery pipe and the inner surface of the fixed frame The top wall is fixedly connected, the side of the fixed frame away from the water pump is provided with a stepping motor, the output end of the stepping motor is fixedly connected with a rotating rod, and the end of the rotating rod far away from the stepping motor is sleeved with a first gear , the inner wall of the first gear is fixedly connected with the outer surface of the rotating rod, and the outer surface of the first gear is sleeved with a rack. The water-saving fruit and vegetable cultivating rack has the advantages of simple structure, the ability to adjust the light receiving angle of the fruits and vegetables, and realize water recycling.
Owner:WUXI IGROWTHS TECH CO LTD

Backlight button, capable of automatically adjusting brightness according to ambient light intensity change, of switch/socket panel

The invention relates to the technical field of an intelligent switch/socket panel, especially to a backlight button, capable of automatically adjusting brightness according to ambient light intensity change, of the switch/socket panel. The backlight button comprises a touch button arranged on the switch/socket panel; the touch button is internally provided with a backlight lamp control circuit; and the backlight lamp control circuit comprises a backlight lamp, a triode, a photosensitive sensor and a power supply, wherein one end of the backlight lamp is connected to the power supply via a first resistor, the other end of the back lamp is grounded, the emitter electrode of the triode is connected with the power supply, the collector electrode of the triode is connected between the first resistor and the backlight lamp via a current-limiting resistor, the base electrode of the triode is connected with one end of the photosensitive sensor via a second resistor, the other end of the photosensitive sensor is grounded, and a biasing resistor is connected between the emitter electrode and the base electrode of the triode in parallel. The backlight button can adjust the brightness of the touch button automatically according to ambient light change, so that the switch button can be brightened in daytime to make the button more beautiful, and the switch button is darkened automatically at night when light is dark and does not influence sleeping of users.
Owner:深圳市蓝色风科技有限公司

Consumable electrode inert-gas shielded welding conductive nozzle

InactiveCN103586570ALower self-heating temperatureReduce current intensityElectrode accessoriesPower flowEngineering
The invention discloses a consumable electrode inert-gas shielded welding conductive nozzle which comprises a nozzle main body, a first through hole is formed in the middle of the nozzle main body, a high-temperature resisting insulation nozzle and a heating component are also arranged in the nozzle main body, the heating component is arranged at a welding-stick input section of the first through hole, and the high-temperature resisting insulation nozzle is arranged at a welding-stick output section of the first through hole. According to the consumable electrode inert-gas shielded welding conductive nozzle, due to the fact that the heating component is arranged, the heating component can preheat welding sticks; compared with an conductive nozzle in the prior art, the consumable electrode inert-gas shielded welding conductive nozzle can reduce current intensity properly and is beneficial to reducing spontaneous heating temperature of the nozzle main body under the same welding condition. According to the consumable electrode inert-gas shielded welding conductive nozzle, under the condition that the traditional dried elongation length is not changed, the distance between the conductive portion of the welding sticks and a workpiece contact point is lengthened, and the stability of high-speed welding is improved.
Owner:杨迎元

Water-heating-type high voltage heating system for new energy car

The invention discloses a water-heating-type high voltage heating system for a new energy car. The water-heating-type high voltage heating system comprises a heat dissipater, and a heating element isarranged at the bottom of the heat dissipater, can heat circular cooling liquid located in the heat dissipater, and comprises a first insulating layer, a resistor heating layer, a second insulating layer, an electricity leaking detecting layer and a sealing layer. The side wall of the heat dissipater is provided with a liquid inlet pipe, a liquid outlet pipe and a high/low voltage inserting jointpiece, and a circular liquid flow pass is formed in the heat dissipater. The heating element of the heating system is composed of functional layers sequentially arranged at the bottom of the heat dissipater, the thickness is only 0.2-0.4 mm, nearly no consumption exists in conversion from electric energy to heat energy, the conversion speed is high, the conversion efficiency is high, a heat sourcewhich is rapid in reacting, short in starting time and reliable in continuity is provided for an air conditioner heating system, a defogging and defrosting system and a power battery heat-insulatingsystem, and a 180-450V direct-current high-voltage electricity vehicle-mounted electric system can be adopted for replacing a low-voltage vehicle-mounted electrical system; and electric power comes from power batteries, the current strength is lowered, and power and heat output is higher and more stable.
Owner:DONGGUAN ZUOYOU ELECTRONICS TECH CO LTD

Electric device, washing machine containing electric device and driving and braking method thereof

The invention discloses an electric device and a washing machine containing the electric device. The electric device comprises a power supply modulator, a stator unit and a rotor unit. More than one rotor unit group is arranged on a rotary drum of the washing machine. Each rotor unit group comprises at least four rotor units arranged at intervals. The material of the rotor unit comprises permanent magnets or magnetizers or combination of the above. Multiple permanent magnet rotor units are arranged around a rotary drum in the same magnetic pole direction. The stator unit at least is installed on a frame fixation part. The periodic relative air gap formed by the stator unit and the rotor unit is no greater than 80 mm. The power supply modulator is used for supplying power to a winding in the stator unit in order to form a magnetic pole direction which is opposite to the polarity opposite to the motion direction of the permanent magnet rotor units. The power supply modulator outputs corresponding time sequence current to a winding of the stator unit such that drive / brake of the electric device is achieved. The washing machine is at least provided with one set of electric devices.
Owner:NANJING MENGQI INTELLIGENT TECH +1

Strain clamp drainage plate with temperature control heating automatic shunting and alarm apparatus

The invention discloses a strain clamp drainage plate with a temperature control heating automatic shunting and alarm apparatus. The strain clamp drainage plate with the temperature control heating automatic shunting and alarm apparatus comprises a strain clamp drainage plate and is characterized in that a bimetallic temperature measurement sheet is fixed on a bolt fixation plate of the strain clamp drainage plate, and the inner-side wall of the strain clamp drainage plate is provided with a shunting lead wire; the central portion of the shunting lead wire is fixed on the inner-side wall of the strain clamp drainage plate through a plastic clamp; a conduction apparatus is arranged at a position, which bridges over the bimetallic temperature measurement sheet, of the shunting lead wire, and the handle end of the strain clamp drainage plate is provided with an alarm. The strain clamp drainage plate, when being heated to a limited scope value due to a resistance increase, can automatically reduce current intensity, flowing through the strain clamp drainage plate, of a power transmission line so as to reduce the heat productivity of the strain clamp drainage plate; and at the same time, when a continuous temperature rise cannot be controlled through shunting, an alarm is immediately given, maintenance or replacement is carried out through timely manual high-altitude operation, and thus the strain clamp drainage plate is effectively prevented from a burnout accident.
Owner:STATE GRID SHANDONG ELECTRIC POWER +1

Device and method for pushing elastic body to clean slag at outlet of rotary kiln through strong current magnetic force

PendingCN107655321ADoes not affect environmental qualityAvoid dangerRotary drum furnacesIncrustation removal devicesElastomerSlag
The invention provides a device and method for pushing an elastic body to clean slag at an outlet of a rotary kiln through strong current magnetic force. The device comprises a gun barrel, a magneticforce emission power supply, a carrier vehicle, a gun barrel angle adjusting device and the elastic body. The gun barrel, the magnetic force emission power supply and the gun barrel angle adjusting device are mounted on the carrier vehicle. The gun barrel angle adjusting device is erected at the bottom of the gun barrel. Two guide rails arranged symmetrically in the gun barrel are connected with the magnetic force emission power supply. The elastic body is loaded in the gun barrel. The two sides of the elastic body are slidably connected with the two guide rails arranged symmetrically in the gun barrel. The device pushes the elastic body through the strong current magnetic force to strike the slag at the outlet of the rotary kiln and can safely and efficiently clear away the slag at the outlet of the rotary kiln. In the slag removing process, the internal environmental quality of the rotary kiln is not affected. Moreover, the device is a certain distance away from the outlet of the rotary kiln. Hazards and heavy manual labor of workers due to manual slag removing under a high-temperature environment are avoided. The influence of the high temperature near the outlet of the rotary kiln on equipment is avoided.
Owner:UNIV OF SCI & TECH LIAONING
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