47results about How to "Avoid heat and burn" patented technology

The invention discloses a differential control system of double-frequency-converter, which comprises the following parts: host motor, accessory motor, host converter and accessory converter, wherein the power of host motor is supplied by 380V power after connecting DC power after communicating host motor and DC bus of the accessory motor; the accessory motor doesn' t connect 380V power, which adopts DC power after communicating the host motor as starting power. The modulating method of constant torque comprises the following steps: using comparator, PID adjuster, feed pump converter, feed screw pump and centrifuger and torque sensor to form the seal adjusting control system; adjusting the feed quantity of screw pump according to the PID output signal; realizing the modulation of constant torque. The modulating method of constant differential speed comprises the following steps: adopting comparator, PID adjuster, accessory motor converter, accessory motor and centrifuger and speed measuring device to form PID adjusting control system; adjusting the frequency of accessory converter of centrifuger according to specific PID control regulation; realizing the modulation of constant differential speed.

The invention discloses a medium-high-voltage electronic aluminum foil for a high-capacity and high-strength capacitor and a preparation method thereof. Through the production modes of casting and a continuous air cushion furnace, the specific volume is increased, and the production period is shortened; and the continuous air cushion furnace is used for multiple times for homogenization and annealing, and the problem that a casting structure is not uniform is solved, so that the performance and the cubic texture are improved, and the medium-high-voltage high-purity aluminum foil for the high-capacity and high-strength capacitor is obtained.

The invention belongs to the technical field of material chemistry, and particularly relates to visible light curing nail enamel and a preparation method thereof. The visible light curing nail enamel comprises the components: 2-98wt% of oligomer, 2-98% of reactive diluent, 0.01-10wt% of visible light initiating agent, 0.01-1wt% of brightening agent and 0-10wt% of pigment. The nail enamel can be cured under the irradiation of visible light with wavelength of 380-780nm, and the harm of ultraviolet light to the skin is avoided; the nail enamel can be rapidly dried in a visible light curing nail printer, and can also be slowly cured under the irradiation of sunlight or other common lighting sources. The visible light curing nail enamel is free of toxic organic solvent or film coalescing aid and safe to use, is guaranteed to be bright lastingly and not easy to drop after being dried, is insoluble in daily oil or water solutions, but can be removed by saline solution or sodium bicarbonate water solution without grinding, so that the harm to the nails is avoided, and the condition that the fine particulate matters are inhaled to affect the lung health is also avoided.

The invention discloses a dendrite accumulation-free lithium cathode battery and an operation method thereof. An enclosed batter shell comprises a battery tape, two battery shafts, a roller and a dendrite removing apparatus, when the dendrite is removed, one battery shaft provides power to coil a battery coil, the other battery shaft provides resistance, the battery tape is tightened, at the same time, is converted from one battery to the other battery through axial direction, during the process, the battery tape is separated to an upper battery tape and a lower battery lithium cathode tape with synchronous motion by the roller when close to the other battery shaft, the dendrite removing apparatus performing dendrite removing on the lower lithium cathode tape, the upper battery tape and the lower lithium cathode tape after the dendrite is removed are superposed to the battery tape when close to the battery shaft, and reeled onto the battery shaft to form a battery coil. The dendrite accumulation-free lithium cathode battery can remove the dendrite to realize the cycle usage of the lithium cathode battery, so that short circuit due to dendrite and the heating combustion phenomenon of the lithium battery due to short circuit can be effectively avoided.

The invention discloses an electromagnetic heating system and a control method thereof. The electromagnetic heating system includes a resonance heating circuit, a synchronization circuit, a power switch tube and a driving circuit. The method includes the following steps: making the electromagnetic heating system enter a current heating cycle, wherein the current heating cycle includes a discharging phase, a heating phase and a stopping phase, and the driving circuit outputs multiple first pulse signals to the power switch tube under control in the discharging phase; recording the number of pulses failing to meet a preset condition in the multiple first pulse signals through a counter to acquire a current counting value; and adjusting the initial pulse width and/or pulse width increment ofthe multiple first pulse signals in the next heating cycle according to the current counting value, so as to automatically adjust the driving pulse width and/or pulse width increment of the driving circuit and suppress the pulse current. The invention further discloses an electromagnetic heating device.

The invention provides a high-stability EMB brake-by-wire system suitable for an ABS and a control method of the high-stability EMB brake-by-wire system, and belongs to the technical field of automobile braking. The brake-by-wire system comprises an electronic control unit and a brake unit. The electronic control unit comprises a BCU, a first motor controller and a second motor controller. The brake unit comprises a first motor, a second motor, a threaded screw transmission part, a ball screw transmission part, a friction plate and a brake disc, the first motor is arranged on the outer side ofthe brake shell, and the second motor is arranged in the brake shell. A dual-motor structure is adopted, and dual-motor redundancy is achieved on the premise that brake-by-wire is achieved; during ABS anti-lock, the characteristics of self-locking of the threaded screw transmission part and non-self-locking of the ball screw transmission part are utilized, so that the first motor does not need locked-rotor braking torque, the second motor does not need to rotate reversely to release braking torque, the anti-lock purpose is achieved, the service life of the motor is prolonged, and braking is more stable.

The present invention discloses a control method of an electromagnetic heating system. The control method comprises the following steps of: controlling an electromagnetic heating system to enter a first heating period and a second heating period, wherein each heating period comprises a discharge phase, a heating phase and a stop phase, in the discharge phase of the first heating period, a drive circuit is controlled to output M first pulse signals to a power switch tube, and in the discharge phase of the second heating period, the drive circuit is controlled to output N second pulse signals tothe power switch tube; and recording the number of pulses which cannot meet a preset condition in the M first pulse signals by employing a first counter to obtain a first counting value, and recording the number of pulses which cannot meet the preset condition in the N second pulse signals by employing a second counter; and determining whether the drive circuit is abnormal or not according to a first counting value and a second counting value so as to effectively detect the abnormal condition of the drive circuit and reduce the loss. The present invention further discloses an electromagneticheating system and an electromagnetic heating device.

The invention relates to a DC electric-manual dual-purpose isolating switch, which comprises a mounting plate, a main circuit conducting mechanism, a support rod, a locking mechanism, a manual unlocking mechanism, a transmission mechanism, a base plate and a handle mechanism. The DC electric-manual dual-purpose isolating switch not only can realize automatic switching, but also can realize manual switching, is compact in structure, convenient to use and high in safety, can bear great short-circuit short-time withstand current, greatly improves the operation reliability of a DC electric isolating switch, and eliminates potential safety hazards of a fire disaster. In addition, the DC electric-manual dual-purpose isolating switch can be quickly assembled through modular assembly.

The invention discloses a transformer suitable for a switch power supply, and the transformer comprises an iron core element which comprises a plurality of flat laminations in parallel stacked together, wherein the lamination comprises an anti-skidding layer on which a plurality of holes are arranged, the lamination comprises an E-shaped lamination and a second lamination both which are together formed into the shape of the Chinese character 'sun', the contact surfaces of the E-shaped lamination and the second lamination are respectively provided with a groove, the second lamination is provided with a fixture block matching the groove, and the transformer has the advantages of steady iron core element structure and reliable lamination contact, thus the transformer isn't easy to displace, and the phenomenon of power reduction and coil heating can be avoided in use.

The invention discloses a communication pole for a multi-degree-of-freedom directional 5G antenna. The communication rod structurally comprises a connecting plate, a supporting rod and a base, the connecting plate is embedded into the inner position of the upper end of the supporting rod, and the supporting rod is welded to the upper surface of the base. Through thrust generated by reverse air flow when an outward extending block extends outwards to outward swinging plates, the outer swing plates can swing towards the two sides along a combination block, then pull-back strips pull the outward extending blocks, crushing grooves can pull apart vine withered grass wound around the outer surfaces of the supporting rod under the cooperation of an outer contact plate, the two outer swing plates are closed and reset to extremely collide with each other to generate vibration, and an inner extending face can extend outwards under the cooperation of the pull-back strips, so that vine type withered grass chippings in a crushing groove can be ejected outwards, and the situation that the vine type withered grass chippings enter the crushing groove and are brought into a plate body together with the outer extending block, and consequently the vine type withered grass chippings are prone to being heated and burnt is effectively avoided.

The invention discloses a communication equipment protection device, which comprises a box body. Three parallel mounting plates are welded to the back inner wall of the box body. A cross beam is fixedbetween the upper surface of the mounting plate at the top and the inner wall of the box body through bolts, and a motor is fixed on the upper surface of the cross beam through bolts. The top end ofthe output shaft of the motor is in key joint with a cam. A sliding frame is fixed by bolts to one side of the cross beam near the cam, and an ejector rod is connected in a sliding manner in the sliding frame. Through holes and equally-spaced inclined holes are formed in the outer walls of two opposite sides of the box body. A radiating fan is fixed by bolts on the inner wall of one side of the box body near the inclined holes. Cooling and heat dissipation are realized at any corner of the box body. The box body can be horizontally fixed at an installation position more easily and can be hoisted more easily, and the construction difficulty is reduced. Moreover, the radiating efficiency is improved, the energy consumption is reduced, and the device is made more environment-friendly.

The invention relates to the field of the electrical equipment, specifically a prefabricated distribution transform rack. The prefabricated distribution transform rack comprises first section of leadwires, second section of lead wires, third section of lead wires, isolation switches, fuse protectors and lightning arresters in one-to-one correspondence, and corresponding bearing cross members; theconnecting ends of the first section of lead wires, the second section of lead wires and the third section of lead wires are prefabricated connecting end sockets. Through the prefabricated distribution transform rack disclosed by the invention, the lead wires of the distribution transform rack and the matched products are prefabricated by adopting the standard process, the difference problem of the field construction processes of different operator is solved, and the prefabrication and standardization of the lead wire pressing and insulation treatment are realized, the rack can be delivered to come into use after the electrical performance of the product conforms to the requirement after the checking, the quality is guaranteed, and the fault rate is effectively reduced; the distribution transform rack is an integrated structure, the standard mounting can be adopted, and the mounting is quick and convenient, and the prefabricated distribution transform rack is fully equipped.

The invention relates to plug pins and plug bushes, particularly to a conical plug pin and a plug bush for a socket and a plug, and solves the problems that the conventional plug pin is in imprecision contact with the plug bush, high in contact resistance, small in effective contact area and easy to heat to be burned. The conical plug pin and the plug bush for the socket and the plug comprise a plug bush part and a plug pin part, wherein the plug bush part comprises a conical sleeve and a disk-shaped connecting plate; the plug pin part comprises a conical pin, a disk-shaped positioning table and a cylindrical connecting head; the thinner end of the conical sleeve is closed, and the thicker end of the conical sleeve is open; the center of the upper plate surface of the disk-shaped connecting plate is fixed with the thinner end surface of the conical sleeve to form a whole body; the thinner end of the conical pin is movably inserted and connected with the cavity of the conical sleeve; the center of the lower table surface of the disk-shaped positioning table is fixed with the thicker end face of the conical pin to form a whole body; the lower end face of the cylindrical connecting head is fixed with the center of the upper table surface of the disk-shaped positioning table to form a whole body. The conical plug pin and the plug bush disclosed by the invention can be applied to various electricity consuming occasions.

The invention relates to an electric tool, in particular to a stress-prevention tool for an insulation wire. The stress-prevention tool comprises a rotation wheel and a plurality of handles, wherein the rotation wheel is provided with an intermediate shaft, the handles are rotatably connected with the intermediate shaft, a groove opening is formed in the rotation wheel, each handle is provided with a rotation press wheel, the insulation wire is inserted between the rotation wheel and the rotation press wheel in a penetrating way by the groove opening of the rotation wheel, and the insulation wire is clamped by the rotation wheel and the rotation press wheel by rotating the handles and is bent and deformed along the rotation wheel. By the tool, the mechanical property of accurate positioning during bending the insulation wire is fully utilized, the production cost is reduced, the construction time is reduced, meanwhile, the stress of the wire and a wiring terminal is eliminated, a wirepositioning process during connection of the insulation wire and equipment is standardized, so that the physical phenomena of an electrothermal effect, wiring terminal breakage and the like caused byunfavorable contact surface are effectively solved, and oxidization and burning brought by a thermal effect are prevented.

The invention discloses a transformer which comprises an iron core element. The iron core element comprises a plurality of parallel flat stacked pieces which are adjacently stacked. The stacked pieces include E-shaped stacked pieces and second stacked pieces, wherein the E stacked pieces and the second stacked pieces form 'B' shapes, the contact parts of the E stacked pieces and the second stacked pieces are provided with meshed teeth, and antiskid layers provided with holes are disposed among the stacked pieces. The transformer has the advantages that the iron core element is stable in structure and less prone to stacked piece displacement, and power reduction and coil heating and burning during use are avoided.

The invention discloses a single-coil shunt release. The single-coil shunt release comprises an EMC (electro-magnetic compatibility) filtering circuit, a rectifying circuit, a sampling circuit, a PWM (pulse-width modulation) circuit, an integrated circuit, a switch circuit, a comparison circuit, a door pin circuit, a differentiating circuit, a power circuit and a single-coil shunt electromagnet, wherein the EMC filtering circuit is used for restraining interference signals generated from a power grid and an internal circuit in two ways; and the single-coil shunt electromagnet comprises a coil winding and a movable iron core. By the single-coil shunt release, releasing actions do not exist when the voltage of the power grid is lower than nominal voltage by 70%, high-reliability releasing can be guaranteed when the voltage of the power grid is higher than the nominal voltage by 70%, after the single-coil shunt release is released, the releasing state of the single-coil shunt release is always maintained until the voltage of the power grid is removed or is reduced to be below 30%, and possibility of reclosure is stopped effectively. During releasing of the single-coil shunt release, reliable shunt releasing can be implemented by the electromagnet through the maximum power, and the conduction time is quite short; and after releasing of the single-coil shunt release, a small power is applied to the electromagnet so as to maintain the releasing state, heating and overturning of the electromagnet can be avoided effectively, and the electromagnet can also be in a powered-on state for a long time.

The invention relates to the technical field of intelligent switches, and discloses a protection device of an intelligent switch; the device comprises a protection box, a protection cover, a leakage protector and an air circuit breaker, the protection box is of a hollow structure, a first installation cavity and a second installation cavity are formed in the protection box, and the first installation cavity is used for installing an intelligent switch; a first opening communicated with the first installation cavity and a second opening communicated with the second installation cavity are formed in one side of the protection box; the protection cover is movably arranged outside one side of the protection box and is used for shielding the first opening; the leakage protector and the air circuit breaker are installed in the second installation cavity and can be exposed out of the second opening, and the leakage protector and the air circuit breaker are configured to be electrically connected with the intelligent switch. The intelligent switch is mechanically protected through the protection box and the protection cover; the intelligent switch and the circuit are electrically protected through the leakage protector and the air circuit breaker, and the use safety of the intelligent switch is greatly improved.

The present invention belongs to the field of automatic control technology, and is especially one kind of adaptive intelligent controller for electric executing mechanism and its adaptive control method. The controller includes servo amplifying part and electric executing mechanism part, and features that the servo amplifying part consists of microprocessor, multiplexer circuit, A/D converter, photoelectric isolator circuit, output driver circuit, solid relay and linkage protecting circuit. The adaptive control method includes the steps of self-learning characteristic parameters of electric executing mechanism and adaptive intelligent control. Owing to the increased adapting function of the servo amplifier, various characteristic parameters of the electric executing mechanism may be obtained during switching from manual control to automatic control, and this avoids overshoot and raises stability, safety and reliability of the controller.

The invention relates to the field of electrical technology, in particular to an electrical interface connector and an electrical connection device. The electric interface connector comprises a conductor core configuration part and a screw-in constriction part. The conductor core arrangement comprises a connecting head and a pressing head which is in the form of a circular table and is connected with one end of the connecting head. At least two cut are arranged on that out wall of the pressing head; The screw-in tightening part comprises a tightening head, wherein the tightening head is provided with a tightening hole matched with the tightening head; The connector is used for mounting in the electrical interface. The installation process of the electric interface connector provided by theinvention is simple and easy to operate. The connectorcan increase the current carrying capacity at the connection port and avoid the heat damage of the components at the electrical interface. The invention improves the installation quality of the conductor connection between the conductive interfaces, avoids damage to the conductor wire core, improves the stability of the conductor wire core fixation, guarantees long-term stability, and avoids heating and burning of the components at the electric interfaces due to the increase of the contact resistance.