53results about How to "Change voltage" patented technology

Disclosed is an elongating arc plasma jet ignition device. A swirler is fixed to the bottom of an inner cavity of a shell; a positive pole is located in the shell and fixedly connected with the swirler; the lower end of an insulation sleeve is installed in a central hole of the swirler, and an air chamber is formed in the gap between the outer peripheral surface of the middle of the insulation sleeve and the inner surface of the shell. A negative pole is embedded on a negative pole installation base, and the arc end of the negative pole extends out of the lower end of the insulation sleeve to be located in the positive pole. An arcing distance 2-8 mm long is kept between the arc end of the negative pole and a nozzle of the positive pole; an air inlet pipe is located at the upper end of the shell and communicated with the space of the air chamber formed between the insulation sleeve and the shell. The taper angle beta of the arc end of the negative pole is 40 degrees. The taper angle alpha of a contraction section of the positive pole is 60-90 degrees. Eight swirling holes with the spiral angle of 45 degrees are evenly distributed in an end surface of the swirler, and work media passing through the swirler generate swirling flow. The elongating arc plasma jet ignition device has the advantages of being high in flame spreading speed, high in penetrating power and rich in active air plasma.

The invention discloses a high-concentration sewage treatment method. The method includes the steps: firstly, using an electrochemical oxidation method for pretreatment of sewage to obtain pretreated sewage; and secondly, adjusting the pH (potential of hydrogen) value of the pretreated sewage to range from 7.0 to 9.0, inoculating microalgae into the sewage, and subjecting the sewage to microalgaebiological treatment so as to purify the sewage, wherein the microalgae biological treatment operating conditions include: the temperature ranges from 25 DEG C to 30 DEG C, the light dark period is 12:12, the illumination intensity ranges from 40001ux to 60001ux, and the steps include aerating or mechanically stirring and continuously culturing for ten to twenty days. By the high-concentration sewage treatment method, sewage treatment cost is reduced, pollutant removal efficiency is improved. Further, the high-concentration sewage treatment method is wide in sewage treatment range, free of secondary pollution and flexible and controllable in operation mode, and environment-enhancing energy is realized.

The invention discloses a resistor switching circuit, a storage circuit and a consumable chip. The resistor switching circuit is used in the consumable chip, and comprises a plurality of resistor switching branch circuits and a decoder, wherein each resistor switching branch circuit comprises a switching switch and a resistor which are connected in series into the conducting loop of a signal wire; the decoder is connected with a data storage module in the consumable chip, and is used for outputting a switching instruction according to a signal output by the data storage module to control the switching switch of the corresponding resistor switching branch circuit to connect the corresponding resistor into the conducting loop of the signal wire or separate the resistor from the conducting loop of the signal wire, so as to change the resistance value in the conducting loop of the signal wire. The consumable chip comprising the resistor switching circuit is easy to modify, and is suitable for printing image equipment which accesses data of the consumable chip through a voltage source and current, so as to be convenient to maintain, and improve the recycling efficiency more conveniently.

The invention discloses a regenerative amplifier device with adjustable pulse energy and time intervals, and a method for generating controllable pulses by using the regenerative amplifier device. An electro-optical Q-switch driving source is controlled through controlling a synchronous trigger, so that voltage at two ends of an electro-optical Q-switch is changed and switching of one energy storage stage and a pulse amplification stage is completed; and arbitrary control on the time intervals and the energy of the pulses in a pulse train is achieved through controlling the turn-on or turn-off time length of the electro-optical Q-switch and the time intervals of the pulse amplification stage and the next energy storage stage.

The invention discloses an electrostatic atomizing cooling system for a high heat flux density surface. The system comprises a pipeline system, an electrostatic atomizing device and a controller, wherein the pipeline system is formed by connecting a liquid storing tank, a circulating pump and a heat exchanger through pipelines; the electrostatic atomizing device is that a micron pore array and a high pressure pore plate are mounted in a nozzle; an atomizing chamber is formed between the micron pore array and a nozzle housing; a flow rate controller and a voltage controller are arranged in thecontroller; the circulating pump is used for pumping cooling liquid from the liquid storing tank, and the cooling liquid injected through the electrostatic atomizing device is collected to a bottom plate below an atomizing system, and the bottom plate is connected to a heat exchanger through a liquid returning pipe and is led to the liquid storing tank; a temperature controller for measuring the temperature of a cooled object is mounted on the bottom plate. According to the system, the rotating speed of a circulating pump is controlled, and the flow rate is changed to adapt to the cooling of the high heat flux density base surface; the voltage and the atomizing flow rate can be accurately adjusted based on the temperature; and moreover, a circulating pipeline system is arranged, so that the problems that the atomizing speed and the atomizing capacity are hard to adjust and the cooling liquid cannot be recycled by an existing atomizing cooling device can be solved.

A water level detection system comprises a water containing device, a first slide rheostat, a sensor, a frequency-to-voltage converter, a comparison circuit and an indicating module, where the water containing device comprises a water tank, a floating block floating on the water surface of the water tank and a connecting part connected with the floating block; the first slide rheostat is connected with the connecting part; the sensor is connected with the first slide rheostat; the frequency-to-voltage converter is connected with the sensor; the comparison circuit is connected with the frequency-to-voltage converter; the indicating module is connected with the comparison circuit; the floating block is used for being driven by rising and falling of the water level to drive a slide end of the first slide rheostat to move so as to change the voltage of the sensor; the sensor is used for changing the capacitance according to changes of the voltage so as to change the voltage output by the frequency-to-voltage converter; the comparison circuit is used for comparing the voltage output by the frequency-to-voltage converter with a reference voltage so as to determine whether the indicating module is to be started or not.

The invention provides a pipeline crack corrosion monitoring method based on multi-way alternate current potential drop. The invention firstly provides a multi-way current method, excitation current is switched on from four different directions, then four sets of voltage ratios are obtained, the maximum voltage ratio is selected to be substituted in a depth solution formula according to the relation between the electrode crack direction and the voltage ratio, and thus the depth of the crack is obtained through solution. The multi-way current method enables the included angle (complementary angle) range between the crack position and the current electrode connection line to change from 0-90 degrees to 67.5-90 degrees, and thus the precision of the solution of the crack depth is obviously improved.

A first amplifier amplifies voltage of a first local bit line connected to static memory cells. Precharging circuits for precharging a first global bit line connected to an output of the first amplifier supply a precharging current through both ends of the first global bit line, respectively. Since the precharging current flows through the first global bit line in both directions, electromigration criteria can be made looser than in cases where the current flows in one direction. This makes it possible to avoid a defect which occurs due to electromigration of the first global bit line. Since the first global bit line can be reduced in wiring width, it is possible to minimize the layout area. As a result, the semiconductor memory can be reduced in chip size with a reduction in chip cost.

The invention discloses a protein isoelectric focusing electrophoresis method and glue preparation device, and belongs to the technical field of bioseparation detection. The method comprises the stepsof glue preparation, glue filling, pre-electrophoresis, electrophoresis, gel fixing, decoloration, dyeing and the like. According to the method, the feeding mode of a sample and voltage and electrophoresis time of pre-electrophoresis and electrophoresis are changed, so that obtained protein electrophoresis bands are clear, good in separation degree and do not diffuse or trail, the problem that inthe prior art, the electrophoresis time is long, and protein diffuses and trails is effectively solved, and the glue preparation success rate is greatly increased. The glue preparation device comprises a glue preparation support, a fixed frame, glue preparation glass, a gasket, an anti-leakage pad and other components. By improving the structure of the glue preparation device, the consumption ofa reagent is reduced, glue filling is fast, no bubble is generated, glue gathering is even, the glue preparation success rate is greatly increased, and meanwhile the inspection cost is reduced.

The invention relates to an SRM direct instantaneous torque control method for DC bus voltage dynamic adjustment. According to the method, a DC-DC conversion circuit is added to the front end of a traditional asymmetric half-bridge power converter; an excitation path and a demagnetization path are decoupled, and a higher demagnetization voltage can be applied, so that the winding of the switched reluctance motor is demagnetized more quickly, corresponding buck-boost adjustment is performed on the DC bus voltage of the power converter according to different operating speeds of the switched reluctance motor, and the adjustment mode has the characteristic of opening angle optimization; the commutation rule of the switched reluctance motor is improved, and a commutation conduction region executes direct instantaneous torque control to reduce torque pulsation through higher demagnetization voltage under the condition of considering the optimal turn-on angle characteristic; in the full-rotating-speed operation range of the switched reluctance motor, a control strategy is controlled through direct instantaneous torque to reduce torque pulsation, and the control strategy does not need to be switched.

The invention relates to an anti-drop power plug and socket assembly for a material bending machine and belongs to the technical field of material bending machines. The anti-drop power plug and socketassembly for the material bending machine comprises a plug; the bottom of the plug is fixedly connected with two symmetrical insertion pieces; electromagnets are fixedly connected to the inner wallsof the tops of the insertion pieces; resistors electrically connected with the electromagnets are fixedly connected to the inner walls of the inner sides of the insertion pieces; negative plates electrically connected with the resistors are fixedly connected to the inner walls of the inner sides of the insertion pieces. According to the anti-drop power plug and socket assembly for the material bending machine of the invention, a rubber film and a limiting groove are matched for use; when the plug is pulled vigorously by an external force, the plug can quickly move upwards under the action of external force, large centrifugal force is generated, so that a piston block moves downwards and extrudes an electrorheological fluid; the rubber film is extruded and expanded by the electrorheologicalfluid; and the rubber film is clamped with the limiting groove, so that the effect of limiting the plug from falling off is achieved, electric power stable connection of the material bending machineis guaranteed, and normal work of the material bending machine is guaranteed.

The invention relates to the technical field of paper winding machines, in particular to a paper winding machine protection device capable of effectively preventing stall. The device comprises a mounting frame, an annular groove is formed in the inner wall of the mounting frame, three evenly-distributed speed reduction blocks are movably connected to the inner wall of the annular groove, damping holes are formed in the inner walls of the speed reduction blocks, iron blocks are fixedly connected to the inner walls of the speed reduction blocks, a rotating shaft is movably connected to the middle of the mounting frame, evenly-distributed sliding grooves are formed in the middle of the rotating shaft, and springs are fixedly connected to the inner walls of the sliding grooves. According to the paper winding machine protection device capable of effectively preventing stall, through cooperative use of the speed reduction blocks and the damping holes, when a paper winding machine rotates rapidly, the speed reduction blocks can be relatively fixed to the rotating shaft under the action of magnetic attraction force of electromagnets and the iron blocks, the viscosity of magnetorheologicalfluid in the annular groove is increased at the moment, the magnetorheological fluid can hardly pass through the speed reduction blocks and the damping holes, and therefore the stall prevention effectis achieved, the winding quality of the paper winding machine is effectively prevented from being reduced, and the practicability is improved.

The invention discloses a grid-separated flash memory's low-power read reference circuit, comprising at least a pair of first reference storage unit and second reference storage unit to provide normal storage units of grid-separated flash memory reading reference current, where the first floating grid of the first reference storage unit and the second floating grid of the second reference storage unit are connected to output end of a logic circuit, which can receives at least an external state signal to determine whether the grid-separated flash memory prepares entering into read mode to make the two floating grids switch between an ON state and an OFF state so as to switch on the two reference storage units to make them supply reference current.

The invention relates to the technical field of medical rehabilitation machinery, and discloses an auxiliary instrument protection device for leg medical rehabilitation, which comprises a shell, a rotating wheel is movably connected to the middle of the shell, an electromagnet is fixedly connected to the inner wall of the middle of the rotating wheel, a foot bar is movably connected to the front of the rotating wheel, and a piston is movably connected to the inner wall of the middle of the rotating wheel. According to the auxiliary instrument protection device, the rotating wheel drives the centrifugal block to move, the centrifugal block drives the dielectric plate to operate, and the positive plate and the negative plate are matched for use, so that the effect of detecting the rotating speed of the rotating wheel is achieved; since the centripetal force borne by the centrifugal block in the initial stage is smaller than traction force of the reset spring and does not causes movement, the relative area, being the minimum value, between the positive plate and the negative plate is constant; therefore, as the rotating speed of the rotating wheel increases, the centripetal force borne by the centrifugal block is larger than the traction force of the reset spring, and at the moment, the centrifugal block moves outwards along the inner wall of the movable groove, and the voltage between the two polar plates is changed.

The invention discloses an autotransformer, which comprises an upper bracket and a lower bracket. The upper and the lower brackets are respectively provided with transmission plates made of plastic. The transmission plates are connected with three coil columns. Coils are arranged outside the coil columns. Iron cores are arranged inside the coils. Protective layers are arranged on the surfaces of the coils. The autotransformer can be applied to a large-scale transformer substation to effectively change voltage and current. The manufacturing work and method are convenient and the manufacturing cost of is saved. The autotransformer is internally provided with an absorbent to remove moisture inside, is good in safety performance and not easy to be shocked by electricity. Spray paint is sprayed on the coils, so that the service life is effectively prolonged. The autotransformer is a scheme with a novel design and is beneficial to popularize.

The invention discloses a forging and pressing machine. The forging and pressing machine comprises a machine body. Bottom feet are arranged on the two sides of the machine body. First supporting columns are connected to the tops of the bottom feet. An inner cavity of each first supporting column is connected with a second supporting column through a hydraulic oil cylinder. A connecting column is arranged at the top of the machine body. A traction spring and a transformer are arranged in the middle of the connecting column. A permanent magnet is arranged in the middle of the traction spring. The two sides of the permanent magnet are connected with conducting coils. One end of the transformer is connected with the conducting coils. The bottom of the permanent magnet is connected with a forging and pressing hammer through a steel pipe. A forging and pressing platform is arranged at the bottom of the machine body. According to the forging and pressing machine, the supporting columns are driven by lifting of the hydraulic oil cylinders to ascend and descend, so that the forging and pressing machine can forge and press high metal objects high in height, the transformer changes the voltage of the conducting coils, consequently the forging and pressing strength of the forging and pressing hammer is changed, controllability is high, the ideal forging and pressing effects are achieved, the forging and pressing efficiency of the objects is improved, and time is saved.

The invention relates to the technical field of LED lighting, and discloses a quantitative shaping device for manufacturing an LED lighting lamp. The quantitative shaping device comprises a shell, the inner wall of the shell is provided with a sliding groove, the inner wall of the sliding groove is movably connected with a sliding block, the inner wall of the sliding block is fixedly connected with a dielectric plate, a positive plate is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell, a negative plate is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell, and a piezoresistor is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell. According to the quantitative shaping device for manufacturing the LED illuminating lamp, a rotating shaft drives a driven disc to rotate, the manner that a valve is opened through manual cooperation is avoided, larger errors are prevented from being generated, the situation that the injection amount of raw materials before and after injection changes is avoided, the situation that produced LED lamps are different in specification is avoided, and the situation that resources are wasted due to the fact that too much raw materials are injected is avoided; and product deformation caused by too little raw material injection is avoided, and the defective rate of products is reduced.

The invention discloses a plasma water torch and relates to the technical field of plasma equipment. The objective of the invention is to solve problems that the plasma water torch is complex in structure and high in cost. The plasma water torch comprises a cylinder, the cylinder is provided with a liquid inlet and a nozzle electrically connected with the positive pole of a power supply, the innercavity of the nozzle communicates with the inner cavity of the cylinder, an insulating bush is arranged at one end, opposite to the nozzle, of the cylinder in a penetrating mode, the insulating bushis coaxially with the nozzle, the insulating bush is internally provided with a connection rod, the connection rod and the insulating bush are movably connected in the axial direction, one end, closeto the nozzle, of the connection rod is provided with an electrode tip, and the electrode tip is electrically connected with the negative pole of the power supply; when the connection rod is moved ina first direction, the electrode tip is close to the nozzle or is in contact with the nozzle; and when the connection rod is moved in a second direction, the electrode tip is far away from the nozzle, the first direction is opposite to the second direction.

The invention relates to the technical field of logistics sorting, and discloses an empty package detecting and screening device for logistics packaging. The device comprises a screening table, wherein an electromagnet is fixedly connected to the inner wall of the middle of the screening table; a package unloading hole is arranged in the middle of the screening table; a piezoresistor is fixedly connected to the inner wall of the middle of the screening table; a positive plate is fixedly connected to the inner wall of the middle of the screening table; a negative plate is fixedly connected to the inner wall of the middle of the screening table; a pressing rod is movably connected to the inner wall of the middle of the screening table; an arc-shaped spacer is fixedly connected to the top of the pressing rod; limited blocks are fixedly connected to two sides of the bottom of the arc-shaped spacer; and a reset rod sleeves the pressing rod. According to the empty bag detecting and screening device for logistics packaging, the arc-shaped spacer drives the pressing rod to move, the pressing rod drives a dielectric plate to move, and then the positive plate, the negative plate and the piezoresistor are used in cooperation to achieve the effect of controlling electromagnetism; and due to the fact that the arc-shaped spacer is extruded downwards by the gravity of logistics packages, the pressing rod is driven to move downwards, at the moment, the reset rod is driven to move.

The invention discloses a novel SMD lamp bead comprising a base and LED chips. The base is provided with a packaging stand and conductive sheets which are arranged on the packaging stand and used for being connected with the LED chips. The packaging stand is provided with four conductive sheets, and each conductive sheet extends towards the outside from inside along the packaging stand to the two sides of the external part of the packaging stand to form conductive pins. The conductive sheets are symmetrically arranged on the base in a way that every two conductive sheets are grouped. The LED chip is connected between the two conductive sheets of each group. A packaging layer for packaging the LED chips covers the packaging stand. After the SMD lamp bead is formed through packaging, series-parallel switching can be realized by changing the connecting mode of the conductive pins and the external circuit so that the current and the voltage required for normal working of the lamp bead can be changed and the structure is practical and reliable.

The invention relates to the technical field of computer painting, and discloses a computer painting device capable of preventing plate spraying chromatic aberration. The computer painting device comprises a shell, wherein a sliding groove is formed in the inner wall of the shell; a spraying cavity is movably connected to the inner wall of the shell; a fixed shaft is fixedly connected to the inner wall of the spraying cavity; a roller shaft is movably connected to the inner wall, close to the outer side of the fixed shaft, of the spraying cavity; a magnetic plate I is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell; a magnetic plate II is fixedly connected to the inner wall, close to the outer side of the sliding groove, of the shell; and positive poles are fixedly connected to the inner wall of the spraying cavity. According to the computer painting device capable of preventing plate spraying chromatic aberration, through the action of Ampere force, the spraying cavity moving rapidly is slowed down, the situation that the moving speed of the spraying cavity is increased when the external voltage is increased is avoided, the phenomenon that less pigment is sprayed on a plate is prevented, chromatic aberration is avoided, unqualified products and scrapped products are avoided, the production cost of plate spraying is reduced, and the qualified rate of products is improved.

The invention relates to the technical field of artificial intelligent robots, and discloses an artificial intelligent robot with automatic force control for freight transport. The artificial intelligent robot comprises a sliding block, wherein clamping grooves are formed in the inner wall of the sliding block, indicator lights are fixedly connected to the inner wall of the sliding block, a sliding groove is formed in the inner wall of the sliding block, a piston is movably connected to the inner wall of the sliding groove, a dielectric medium plate is fixedly connected to the inner wall of the piston, a limiting block is fixedly connected to the position on the inner wall of the sliding groove and close to the outer side of the piston, and positive plates are fixedly connected to the positions on the inner wall of the sliding block and close to the outer side of the sliding groove. According to the artificial intelligence robot with automatic force control for freight transport, through the characteristics of magnetostrictive rods, under the action of a magnetic field, the magnetostrictive rods can extend, cargoes with small hardness cannot be damaged when the artificial intelligence robot clamps the cargoes, resource waste is avoided, and economic losses are prevented; and the clamping force of the artificial intelligent robot is prevented from being reset, time and labor are saved, and the freight transport progress is accelerated.

The invention discloses a fume purification device with the synergism of low temperature plasma and solution dehumidification. The fume purification device comprises a base (19), wherein a water pumpI (1), a water pump II (2), a compressor (4), a solution tank I (7) and a solution tank II (3) are arranged on the base (19); the solution tank I (7) and the solution tank II (3) communicate and holda lithium bromide solution; a dehumidification bin (9) is arranged above the solution tank I (7); a regeneration bin (11) is arranged above the solution tank II (3); an inlet of the dehumidification bin (9) is used as a flue gas inlet (20); an outlet of the dehumidification bin (9) is connected with a reaction bin (16); and multiple bobbin type low temperature plasma generators (15) are arranged at the positions, located on the same circumference, between porous plates (17) on two sides in the reaction bin (16). The device adopts a low temperature plasma technology so as to meet the requirements of high air flow and the like of a smoke exhaust ventilator, and adopts a heat pump solution dehumidification treatment device so as to the meet the humidity requirement of the low temperature plasma technology.

The invention discloses an intelligent shower system based on an adjustable fan and relates to the field of intelligent shower systems. The intelligent shower system comprises a control device. The control device comprises a temperature sensor, a fan control circuit, a single-chip microcomputer and a power source. The temperature sensor and the fan control circuit are electrically connected with the single-chip microcomputer. By means of the intelligent shower system based on the adjustable fan, the problems that according to an existing shower system, when a shower room is used for a long time, the temperature is excessively high, water mist is too much, and consequently a user cannot breathe smoothly, and the use comfort degree of the shower device is lowered are solved. The intelligentshower system has the beneficial effects that the shower comfort degree and convenience are improved.

The invention belongs to the technical field of advertising media and discloses an advertising medium-oriented display with an automatic cleaning function. The display comprises a shell; a piston is movably connected to the inner wall of the shell; a sliding block is fixedly connected to the bottom of the piston; a dielectric plate is fixedly connected to the inner wall of the sliding block; the outer side of the sliding block is movably connected with a ball; the inner wall of the sliding block is movably connected with a limiting rod; the inner side of the limiting rod is fixedly connected with a leather bag; and an electrode column is fixedly connected to the position, close to the inner side of the leather bag, of the inner wall of the limiting rod. According to the advertising medium-oriented display with the automatic cleaning function, through shrinkage of an electroactive polymer, rainwater is prevented from being attached to the display when hitting the display,rain spots are prevented from being formed on the surface of the display, and therefore, the advertising effect of advertisements is improved; meanwhile, the rainwater attached to the display is cleaned in time, and the display is prevented from being corroded, and the service life of the display is prolonged.

A lightning arrestor comprises a main body and a first cavity arranged in the main body and extending left and right, A left and right end face of that main body is symmetrically provided with an adaptor, the adapter body is provided with a first guide sliding cavity which extends left and right and is communicated with the first cavity, A first auxiliary body is fixedly connected with a right side adapter far away from an end face of the main body, a second cavity communicating with the first guide sliding cavity is arranged in the first auxiliary body, a fixing shaft extending forward and backward is arranged in an inner wall of the second cavity, and a first external joint is symmetrically arranged at a front end of the fixing shaft; The invention has the advantages of simple structure,fast response speed and timely switching of working states.

The invention discloses a device for reducing a burning leakage rate of an ignited device. The device comprises a power supply unit, an adjusting unit, a trigger energy storage unit, a trigger boosting unit, an ignited device and a trigger switch, wherein a common end of the trigger switch is connected with a positive electrode of the trigger energy storage unit, a first contact of the trigger switch is connected with a negative electrode of the adjusting unit, a second contact of the trigger switch is connected with an input electrode of the trigger boosting unit, an output electrode of the trigger boosting unit is connected with a trigger electrode of the ignited device, a negative electrode of the power supply unit, anegative electrode of the trigger energy storage unit, a common electrode of the trigger boosting unit and a negative electrode of the ignited device are grounded, and a positive electrode of the power supply unit and a positive electrode of the adjusting unit are connected with a positive electrode of the ignited device.