2894 results about "Power cord" patented technology

A multi-phase LLC resonant converter circuit (10) includes: first to third LLC resonant converters each including a series circuit (S1 to S3) of a first switch and a second switch that are connected in parallel to a DC power supply, a high-frequency transformer (T1 to T3) including a primary-side winding and a secondary-side winding, a resonant circuit including a resonant reactor (Lr1 to Lr3) connected between a connection point of the first switch and the second switch and one end of the primary-side winding, a resonant capacitor (Cr1 to Cr3) in which one end is connected to the other end of the primary-side winding, and a divided resonant capacitor (Cn1 to Cn3) in which one end is connected to a connection point of the primary-side winding and the resonant capacitor; a first neutral line (N1) that connects the other end of the resonant capacitor; a neutral line reactor (Ln) connected between the first neutral line and a power supply line of the DC power supply; and a second neutral line (N2) that connects the other end of the divided resonant capacitor.

The invention provides a tumor electric field treatment system and an electrode slice temperature detection method, the system comprises an electrode slice and a controller, the electrode slice comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, the grounding ends of the temperature detection units in each row group are jointly connected to the same grounding wire, and the signal ends of the temperature detection units in each column group are connected to the same dual-purpose signal wire after being in short circuit with the corresponding electrode units; when the dual-purpose signal line is connected to the temperature sampling point, the grounding wires are sequentially conducted, so that temperature detection signals detected by the temperature detection units are sampled based on the temperature sampling point; when the dual-purpose signal line is connected to the alternating power line, alternating electric signals are transmitted to the electrode units. In this way, a plurality of electrode units can be zoned and controlled using fewer conductive traces.

A case body has a first opening that is open along a first direction and through which an inverter device is insertable, a surrounding wall portion disposed along the first direction so as to surround the first opening, and a second opening that is formed in the surrounding wall portion and through which a power cable is insertable. A cover member is fixed to the surrounding wall portion by a plurality of fastening members disposed away from each other along an opening edge of the first opening so as to cover the first opening. A second opening width in a direction orthogonal to the first direction is smaller than an opening width of the second opening in the first direction, and a pair of the fastening members is disposed on both sides across the second opening.

The invention provides an electrode plate and a tumor electric field treatment system, the electrode plate comprises a plurality of electrode units and a plurality of temperature detection units, the plurality of temperature detection units are divided into a plurality of row groups and a plurality of column groups, and the grounding ends of the temperature detection units in each row group are connected to a grounding pin through a control switch. The signal end of each temperature detection unit in each column group is connected to a bidirectional change-over switch through a dual-purpose signal line after being respectively in short circuit with the corresponding electrode unit; when the dual-purpose signal lines are connected to the temperature sampling points, temperature detection signals detected by the corresponding temperature detection units in the corresponding column groups are respectively sampled based on the temperature sampling points by configuring the on-off states of the control switches; when the dual-purpose signal lines are connected to the alternating power lines, alternating electric signals are applied to the electrode units in the corresponding column groups based on the alternating power lines. In this way, a plurality of electrode units can be zoned and controlled using fewer conductive traces.

The utility model discloses an electro-magnetic levitation in-mold injection molding structure, which belongs to the technical field of in-mold injection molding process, and comprises an injection cavity structure, a molding framework structure, a magnet structure and an external power supply positive and negative pole structure, the molding skeleton structure is movably arranged in the injection cavity structure, an N pole of the magnet structure is arranged on one side of the injection cavity structure, and an S pole of the magnet structure is arranged on the other side of the injection cavity structure; the external power source positive and negative electrode structure is arranged on the adjacent side of the injection cavity structure and electrically connected with the forming framework structure. The injection molding structure in the electro-magnetic levitation mold solves the technical problem that a power line and a memory steel wire are easy to expose when a Bluetooth earphone neck hanging product is subjected to oil pressure molding.

A head-mountable device assembly can include a display, a power unit, a cable electrically connecting the display and the power unit, and a retraction device configured to collect the cable.

A photoelectric composite flexible high-voltage reel cable, including a polyethylene outer sheath (1), a double-face plastic-coated steel belt (2) connected to an inner side of the polyethylene outer sheath (1), an insulating tape (3) connected to an inner side of the double-face plastic-coated steel belt (2), an anti-crack protective sleeve (4) connected to an inner side of the insulating tape (3), and a power cord body (6), a filler rope (7), a reinforcement (9) and an optical fiber body (8) sequentially distributed on an inner side of the anti-crack protective sleeve (4) from top to bottom, where the power cord body (6), the filler rope (7) and the optical fiber body (8) are distributed on a peripheral side of the reinforcement (9). The photoelectric composite flexible high-voltage reel cable further includes a metal radiating column (11), movable balls (13), a rubber air bag (14), and a conveying pipe (15).

A headphone that can replace multiple components without the need for professional tools includes two headphone bodies, which are connected together through headbands. A sheath is provided on the inner side of the headband facing the headphone body, and the end of the sheath is detachably connected to the headband. The bottom of one headphone body is connected with a power cord and a microphone, and the magnetic suction on the back side of the two headphone bodies is equipped with a decorative cover, The opposite side of the two headphone bodies is buttoned and equipped with earmuff.

A degradation determination device determines whether each of a first opening / closing device and a fuse provided on a power path is in a degraded state. The power path has a positive electrode-side power line and a negative electrode-side power line. The first opening / closing device and the fuse are provided on the negative electrode-side power line. The degradation determination device is provided with a first potential detection unit that detects a first potential at one end of the first opening / closing device and a second potential at the opposite end thereof, a second potential detection unit that detects a first potential at one end of the fuse and a second potential at the opposite end thereof, and a control unit that determines whether each of the first opening / closing device and the fuse is in a degraded state, based on a potential difference between the first and second potentials.

The invention provides an electric energy quality treatment method, system and device based on a charging pile and a medium, and belongs to the technical field of charging piles, and the method is realized through the following steps: employing a mutual inductor to collect three-phase voltage / current; a common analog sampling and DSP processing circuit; harmonic / reactive power is identified based on the instantaneous reactive power theory, and a compensation instruction is generated; according to the compensation control instruction, driving an active filtering inverter circuit to inject compensation current into a power grid so as to reduce the total harmonic current content and improve the power factor; and the main controller generates charging state data according to the sampled voltage signal and current signal, and couples the data to an alternating current power line for transmission through the power line carrier communication module. The system guarantees the quality of the power grid, achieves the high efficiency and reliability of the operation of the charging pile, and gives consideration to the safety of the power grid and user experience.

The invention relates to a device (1) for contacting an electrical conductor (2), in particular a cable conductor of a power supply cable, comprising at least - a connecting body (3) that defines a receiving space (4) into which the conductor (2) to be contacted can be inserted with its end face (5), and - a contact medium (6) with a plurality of electrically conductive and adjacent contact bodies (7) introduced into the receiving space (4), with which the end face (5) of the conductor (2) can be electrically contacted. According to the invention, it is provided that the electrical conductor (2) can be fixed in the receiving space (4), wherein a contact surface (8) of the receiving space (4) facing the conductor (2) is designed in such a way that electrical contact between the connecting body (3) and the conductor (2) is optimized.

A thermosensitive wire includes a pair of conductive wires each covered with an insulator that softens at a preset temperature, and the pair of conductive wires are configured to come into contact with each other to be short-circuited in response to the insulator softening. A power supply system includes: a second power source configured to supply power to the pair of conductive wires; a short circuit detector configured to detect that the pair of conductive wires are short-circuited; a disconnection detector configured to detect that the pair of conductive wires are disconnected; and a controller configured to perform, for power supply to a power supply wire, abnormality control that differs between in the case where the short circuit detector detects that the pair of conductive wires are short-circuited and in the case where the disconnection detector detects that the pair of conductive wires are disconnected.

This power cable is provided with: a conductor; and an insulating layer that is provided so as to cover the outer periphery of the conductor and that is configured from a resin composition containing polyethylene. The insulating layer contains, among polyethylene, a crosslinked polyethylene that is insoluble in xylene at 120° C, and uncrosslinked polyethylene that can be eluted in xylene at 120° C. The uncrosslinked polyethylene has a number average molecular weight of 5000 to 25000.

The utility model discloses an electrical safety monitoring device convenient to disassemble and maintain, and relates to the technical field of electrical safety monitoring, the electrical safety monitoring device comprises an electrical box body, a cabinet door, a mounting plate and an electrical safety monitor main body, the cabinet door is installed at the front part of the electrical box body, the mounting plate is installed inside the electrical box body, and the cabinet door is installed at the rear part of the electrical box body. And an electrical safety monitor main body is mounted at the front part of the mounting plate. According to the electrical safety monitoring device convenient to disassemble and maintain, two sets of threaded knobs are unscrewed firstly, so that when extrusion blocks at the ends of the threaded knobs no longer extrude the surface of the front portion of the electrical safety monitoring instrument body, a bidirectional threaded rod can be reversely rotated, and when the bidirectional threaded rod is reversely rotated, two sets of limiting plates can be driven to perform threaded sliding away from each other; the power lines can be separated through the partition plates, and the power lines can be extruded and fixed through the limiting blocks, so that the multiple groups of power lines can be placed in order, and the situation that the power lines are wound together is not likely to occur.

The utility model provides a short-circuit protection circuit for a Type-C interface, and belongs to the technical field of short-circuit protection circuits. Comprising an interface module, an overvoltage and electromagnetic protection circuit and a switching circuit, the interface module, the overvoltage and electromagnetic protection circuit and the switching circuit are connected in series on the same power line and grounding line, and a common circuit and a standby circuit are arranged in the switching circuit and are both connected with the power line. According to the utility model, through the cooperation of the resettable fuse, the double-pole double-throw relay and other elements, the circuit can be rapidly switched so as to ensure that the interface can continue to work normally without maintenance when a short-circuit fault occurs, and through the synergistic effect of the gas discharge tube, the first transient suppression diode, the second transient suppression diode, the electrolytic capacitor and other elements, the short-circuit fault of the interface can be effectively prevented. The problems of overvoltage and electromagnetic interference during short circuit can be effectively relieved.

A power feeding connector (18) to which a power feeding cable (19) for supplying electric power to an electric motor or a battery (12) is connected and an indicator lamp (25) that lights up when a lower traveling structure (2), an upper revolving structure (3) or a working mechanism (4) is in the middle of operating are arranged in back of an operator's seat (7). An insert port (18A) of the power feeding connector (18) which the power feeding cable (19) is connected or disconnected is located to be oriented to the indicator lamp (25)-side in the left-right direction. Because of this arrangement, the insert port (18A) can be illuminated by light emitted from the indicator lamp (25), allowing an operator of an electric hydraulic excavator (1) and workers around it to recognize that the electric power fed from an external power source (13) is being supplied to the electric hydraulic excavator (1) via the power feeding cable (19) connected to the power feeding connector (18) and that the electric hydraulic excavator (1) is in the middle of operating with this electric power.

A heating assembly is arranged on the outer side of the bottom of an inner shell, an outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the outer shell further comprises an outer bottom shell, and the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing the heating assembly. The outer shell comprises an outer side shell forming a vacuum layer with the side wall of the inner shell, the side edge heat preservation effect is good, the outer bottom shell, the outer side shell and the outer wall of the lower bottom of the inner shell form a containing cavity for containing a heating assembly, the whole body is independent, reliable and convenient to carry, can be matched with a power line or a power source to be carried, is lighter, and can be electrically connected when the power source is needed. And the inner shell and the outer shell are arranged, so that cleaning and disinfection are facilitated, the containing cavity for containing the heating assembly is formed, good heat preservation can be achieved, and the complete heating effect is achieved.

The utility model discloses a winder which comprises a winding wheel and a power line, the winding wheel is formed by connecting a first wheel disc and a second wheel disc into a whole, a winding shaft is arranged in the middle of the winding wheel, the power line is wound on the winding wheel, the winding wheel can rotate around the winding shaft, a pressing plate is fixed to the side, away from the second wheel disc, of the first wheel disc, and the winding shaft penetrates through the pressing plate and is in clearance fit with the pressing plate. The winder further comprises a pair of coil springs and a pair of rotating shafts, the pair of rotating shafts are fixed to the pressing plate and are symmetrically arranged relative to the winding shaft, one end of one coil spring is fixedly connected with one rotating shaft, the other end of the coil spring is fixedly connected with the winding shaft, one end of the other coil spring is fixedly connected with the other rotating shaft, and the other end of the other coil spring is fixedly connected with the winding shaft. According to the winder, the change of the take-up speed is small in the whole take-up process, the use experience effect of a user is improved, and meanwhile the effect of protecting a power line is achieved.

The utility model discloses a honeycomb type heat dissipation rear cover which comprises a cover body, the outer side of the cover body is provided with two containing concave surfaces, the bottom surfaces of the containing concave surfaces are provided with a plurality of heat dissipation concave holes integrally formed with the cover body, the heat dissipation concave holes are honeycomb-shaped open holes, and the depth of the heat dissipation concave holes is smaller than the thickness of the cover body. An installation protrusion is arranged in the center of the outer side of the cover body, a power line outlet and two counter bores are formed in the edge of the outer side of the cover body, installation holes are formed in the counter bores, a through hole is formed in the center of the installation protrusion, and reinforcing ribs are arranged between the installation protrusion and the counter bores. Two forming grooves are formed in the outer side of the cover body; the cover body of the honeycomb type heat dissipation rear cover can lead out heat in the motor through the heat dissipation concave holes, the thickness of the part, located at the heat dissipation concave holes, of the cover body is small, heat transfer is faster, heat of the motor can be dissipated to air more easily, the heat dissipation performance of the motor and parts is improved, and the service life of the motor and the parts is prolonged.

A noise reduction circuit includes: noise canceler circuitry configured to inject a compensation current into a power line and ground to reduce a common mode noise current that flows through the power line and the ground into a commercial power supply from a power converter with a switching element connected to the commercial power supply; and overcurrent inhibitor circuitry provided on a compensation current path through which the compensation current flows, the overcurrent inhibitor circuitry being configured to inhibit application of an overcurrent to the noise canceler circuitry.

A motor leakage current detector and / or a heat compensating circuit, devices using same and related methods are disclosed herein. Included are a uniquely wired current transformer to allow for polarity agnostic leakage current detection, a leakage current detector using same and having a notifier to alert a user. In other forms, an accessory power cord and power strip are disclosed capable of detecting early motor failure conditions. In still other forms, other machinery failure early warning systems are disclosed as are numerous motor operated devices using same including without limitation pumps.

An apparatus and method for limiting inrush current to an end device provides an alternating current (AC) to the end device via a power cord including first and second current carrying conductors. A voltage sensor enclosed by a housing attached to a power cord and connected to the conductors senses an input voltage. A current sensor within the housing senses an inrush current via the first conductor. A microcontroller unit (MCU) within the housing receives the sensed input voltage and inrush current. Based on the sensed input voltage, the MCU determines a voltage drop across a negative temperature coefficient (NTC) thermistor serially connected (with a switching device) to the first conductor. When the sensed inrush current and / or the sensed input voltage reaches a threshold level, the MCU engages the NTC thermistor to limit inrush current by opening the switching device.

A power harness includes a cable having a ring insert received in an opening electrically connected to the cable body and having a cable seal sealed to the flat cable. The power harness includes a housing having a chamber with a cable slot and a bore passing through a hub. The power harness includes a threaded bolt received in the hub passing through the ring insert to threadably couple to a mating harness. The threaded bolt includes an insulating cover on the head and an insulating cap extending from the threaded shaft. The threaded bolt includes a bolt seal sealed to the housing. The power harness includes a contact ring received in the hub aligned with the ring insert with an opening that receives the threaded bolt. A first end engages and is electrically connected to the ring insert and a second end is electrically connected to the mating harness.

The invention discloses a full-automatic power line production line which comprises peeling and riveting equipment, head and tail forming equipment and bundling and packaging equipment, a transition manipulator is arranged between the peeling and riveting equipment and the head and tail forming equipment, and a discharging manipulator is arranged between the head and tail forming equipment and the bundling and packaging equipment; the stripping and riveting equipment comprises a cutting mechanism, a tail-end stripping and riveting mechanism and a head-end stripping and riveting mechanism, the tail-end stripping and riveting mechanism and the head-end stripping and riveting mechanism are respectively used for stripping two ends of a wire and riveting a connecting terminal, and the transition manipulator is used for transferring the wire to the head and tail forming equipment; the head and tail forming equipment comprises a tail end spacing transfer mechanism, a tail end injection molding machine, a head spacing transfer mechanism and a head injection molding machine, and the discharging manipulator is used for grabbing and placing finished products on the bundling and packaging equipment. The whole-course automatic production from the whole coil of wire rod to the finished product power line can be realized, and the production efficiency is greatly improved.

The invention relates to the technical field of seismic exploration equipment, in particular to an optical fiber signal transmission seismic cable for seismic exploration. A power line, a twisted-pair shielding signal line and an optical fiber beam tube are wrapped outside the high-pressure plastic composite hose in a cabling mode, and the power line, the twisted-pair shielding signal line and the optical fiber beam tube jointly form a cable core structure. An outer layer non-woven fabric is wrapped outside the cable core structure, a polyurethane inner sheath is extruded outside the outer layer non-woven fabric, an armor layer is wrapped outside the polyurethane inner sheath, and a polymer polyethylene sheath is extruded outside the armor layer. According to the high-pressure plastic composite hose, through the design of the double reinforcing layers of the Kevlar aramid fibers and the polyester fibers, the strength and bursting pressure of the central air pipe are remarkably improved, and the high-pressure plastic composite hose can better adapt to the complex working environment; the cable core structure adopts composite optical fiber analog signal transmission to replace a traditional digital signal seismic cable, so that the quality and efficiency of signal transmission are improved; and the armor layer adopts a double-layer steel wire armor structure, so that the overall mechanical strength and tensile property of the cable are improved.

A stackable storage system is disclosed. The system includes a base storage container disposed on a wheeled cart, and one or more additional storage containers removably secured on top of the base container. The system further includes a power outlet box which is interchangeably securable in the system with the other storage containers. The power outlet box includes an extendable AC power cord which may be plugged into a wall outlet, and one or more electrical output plugs, include AC outlets and USB outlets which are powered by the AC power cord. The power outlet box and other containers are securable to each other by a spring loaded latch system. The power outlet box is also usable separate with a storage container having an overhead carry handle allowing both the container and power box to be transportable together.

According to one embodiment, a strain detection device includes a plurality of strain gauges arranged in a row, a power line, a ground line, a first signal line, and a second signal line each extending along the row of the strain gauges, a plurality of first open / close switches each connected between the one end of each of the strain gauges and the power supply line, a plurality of second open / close switches each connected between of the other end of each of the strain gauges and the ground line, a plurality of third open / close switches each connected between the one end of each of the strain gauges and the first signal line, and a plurality of fourth open / close switches each connected between the other end of each of the strain gauges and the second signal line.

The invention relates to the technical field of electromagnetic compatibility automatic testing, in particular to a power line audio conduction sensitivity automatic testing and switching system which comprises a multi-mode testing module, a data recording module, a testing analysis module, a testing control module and a result dividing module. Three test modes of high sensitivity, conventional sensitivity and low sensitivity are set, and a programmed switch group is utilized to automatically switch the connection relation between a capacitor and a coupling transformer, so that automatic configuration of different interference intensity test environments is realized. And the system automatically determines a subsequent test direction by analyzing conduction fluctuation characteristics of the transmission subsystem, and intelligently grades the anti-interference capability of the equipment based on a final test result. The problems that manual wiring is complex, efficiency is low and errors are prone to occurring in traditional testing are solved, automation and intellectualization of the testing process are achieved, testing efficiency and accuracy are remarkably improved, and meanwhile a reliable basis is provided for applicability evaluation of equipment in different electromagnetic environments.

The utility model discloses a polyurethane watertight photoelectric composite cable, and relates to the technical field of watertight photoelectric composite cables. The composite cable comprises the outer sheath, the inner sheath, the optical fiber unit and the power line, the inner sheath is arranged in the outer sheath, the overall use strength of the composite cable is improved through the outer sheath and the inner sheath, and the armor layer is arranged between the outer sheath and the inner sheath, so that even if the outer sheath is broken, the optical fiber unit can be prevented from being damaged, and the service life of the composite cable is prolonged. The inner sheath is protected through the armor layer, the first water-blocking tape is made of a material formed by compounding polyester fibers and a high-water-absorption material after meeting water, and when water enters a cable port using the water-blocking tape, high-water-absorption powder or a water-swelling material contained in the water-blocking tape can absorb the water through the water absorption performance of the high-water-absorption powder or the water-swelling material. And the water-blocking tape expands to become gel to form a protective barrier for preventing water from flowing, namely, the protective barrier performs waterproof protection between the broken part of the outer sheath and the armor layer.

The utility model provides a pipeline machine. The pipeline machine comprises a rear shell, a main board, a first heating body, a second heating body, a power line, a first strong-current wiring harness and a second strong-current wiring harness. The two sides of the rear shell are arranged to be a first side and a second side respectively. Two sides of the mainboard are respectively provided with a strong wire terminal group and a weak wire terminal group. The first strong-current wire harness is located on the first side and electrically connected with the strong-current wire terminal set, the first heating body and the power line. One end of the second strong-current wiring harness is electrically connected with the second heating body, and the other end is electrically connected with the first strong-current wiring harness and the power line. The strong wire terminal set and the weak wire terminal set are located on the two opposite sides of the rear shell respectively, the first strong wire harness is connected into the strong wire terminal set from the first side, and the weak wire harness can be connected into the weak wire terminal set from the second side, so that strong and weak wires are separated, and interference to electromagnetism is avoided; it is ensured that the weak wiring harness is not damaged when the first strong wiring harness leaks electricity or is short-circuited, and the safety of the pipeline machine is improved.