78 results about "Coil tap" patented technology

The invention relates to an external hanging combined vacuum on-load tap switch, comprising a case, a tap selector, a switching means assembly, a transmission device, and one electric operation mechanism, wherein one lateral side wall of the case is provided with a connecting terminal connected with the coil tap of a transformer; the external side of the wall is provided with a first flange plate and is connected with a second flange plate of the transformer; the tap selector and the switching means assembly are arranged inside the case in parallel; and the electric operation mechanism is connected with the transmission device and drives the tap selector and the switching means assembly to achieve tapping and switching through the transmission device.

The invention discloses an arc-free compensatory single phase voltage regulating and stabilizing device, including protection electric appliance, sample controller, control circuit and compensating circuit, and its characteristic: the control circuit includes several relays, the control coil of each relay is controlled by the sample controller and the corresponding contact of each relay controls the compensating circuit. The compensating circuit includes a compensating transformer, the secondary winding coil of the compensating transformer is connected in series between power supply and load and the primary winding coil is provided with several series coils, the tap terminal of each coil is connected with phase or zero lines through the corresponding contacts of several relays of the control circuit. In use course, the voltage and current is uninterrupted, the primary winding coil makes forward or backward compensation on the output of the secondary winding coil by making delayed and arc-free switching of different coil groups under the control of the sample controller and control circuit, realizing the function of adjusting and stabilizing output voltage. It is applied to single phase voltage adjusting and stabilizing power supply.

The invention discloses an automatic adjusting device and an adjusting method for eliminating induction log direct coupling signals, and relates to the field of direct coupling signal offset of receiving coils in induction log tools. The automatic adjusting device comprises a coil former, a transmitting coil, a base coil with fixed turns and an adjusting coil with adjustable turns. The adjusting coil is designed based on multi-layer PCBs, a plurality of taps are led out from the PCBs, different taps correspond to different coil turns, and all the taps are mutually connected to an analog switch and are then connected with a signal conditioning circuit, a sampling circuit and a main control circuit in sequence. In an automatic offset process, the main control circuit controls the analog switch to switch different taps of the adjusting coil, the direct coupling signal intensity of the current tap is calculated, and the analog switch is gated on the tap with the weakest direct coupling signal of the coil through a direct coupling offset algorithm, and the automatic direct coupling offset effect which is easy to achieve, precise and stable is finally achieved.

The present invention relates to mechanical technology and is one kind of driver based on super-magnetostrictive material. The driver consists of magnetostrictive rod, front magnetic pole end cap, back magnetic pole end cap, exciting winding, micro displacement output head, casing, fixed end cap, front end cap, spring, winding tap, flat spiral pipe, water inlet pipe and water outlet pipe. The water cooler of the present invention is formed through inserting one end of some metal pipe into positioning hole of spindle, installing rolling tool onto tool carrier, adjusting the lathe to the pitch of the flat spiral pipe and starting the lathe to complete the extruding formation of the flat spiral pipe. The present invention has simple structure and high reliability and can maintain constant temperature of the magnetostrictive rod.

Provided is a direct type bar terminal assembly and a slide tap switch applying the same, relating to the terminal assembly of the dry type transformer primary coil tap, also relating to the slide tap switch applying the same, wherein the former overcomes the defect that the shifting causes the loose of the insert or the pouring position, and the latter solves the defect that cost is increased because of the addition of the cables. The former includes a bar base plate made of insulation materials, the conducting strips and the connection modules, wherein the connection modules are arranged in a row along the length direction of the base plate, including a screw and a conduction poles passing through the base plate, and the lower end is fixed with one end of the conduction piece combined with the screw. The latter includes a direct type bar terminal assembly, a wire holder of the transformer and a slider; the end of the conduction piece of the direct type bar terminal assembly is fixed on the wire holder, and the slider slides the external column surface of the direct type bar terminal assembly in turn.

The invention provides a high-speed full-duplex wireless energy data synchronous transmission system based on frequency division multiplexing, and belongs to the technical field of wireless power transmission, aiming at solving the problem that the conventional wireless energy data synchronous transmission technology cannot realize full-duplex communication. The system comprises a power transmission circuit which is used for transmitting electric energy from a primary side to a secondary side through a loose coupling transformer with a tap and then outputting the electric energy to a load; a primary side data transmit-receive circuit and a secondary side data transmit-receive circuit. The data transmit-receive circuits in the invention employ the frequency division multiplexing technology,so that power and data are transmitted through an induction coil with a tap by using carriers with different frequencies, and the data carrier frequency is far higher than the power carrier frequencyso as to eliminate crosstalk between the data and power transmission; the duplexers in the data transmit-receive circuits isolate data receiving and transmitting carriers on the same side to achievefull-duplex data transmission; the position of the coil tap is optimized, so that the transmission gain of bidirectional data carriers is maximum, and transmission of the data carriers is facilitated.

The invention relates to forward-backward voltage regulation no-excitation tapping switch used for a transformer. The switch comprises an insulator, an upper bracket, a lower bracket and an insulating shaft. Two layers of fixed contacts and moving contacts are arranged corresponding to every phase of the switch, and the moving contacts are installed on the insulating shaft and connected with two adjacent fixed contacts at the same time. The tapping switch is characterized in that four fixed contacts linked with a tap k of a main coil and three fixed contacts linked with a tap of a voltage regulation coil are arranged on one layer in every phase; three fixed contacts for outputting x and four fixed contacts linked with the tap of the voltage regulation coil are arranged on the other layer in every phase; and the arrangement directions of the tap linkage positions of the fixed contacts which are connected with the tap of the voltage regulation coil and arranged on the opposite layers in every phase are opposite. The switch has the advantages of simple structure, convenient manufacturing, reliable working performance, low manufacturing and use costs, suitability for configuring with transformers with various structures, convenience for the simplification of a transformer structure, and good forward-backward voltage regulation effect, thereby meeting the market demands.

The invention discloses a multidimensional electromagnetic modulating device for electromagnetic stirring of a slab crystallizer. The multidimensional electromagnetic modulating device comprises a stirrer system (1), a crystallizer system (2), metal liquid (3) and a speed measuring system; the stirrer system comprises a PLC control unit and two single-side stirrers distributed on wide faces of two sides of the crystallizer, the single-side stirrers comprise multilayer stirrer units, a magnetic shielding sheet is arranged between the stirrer units arranged on every two layers, the stirrer unit arranged on each layer comprises multiple coils and magnet yokes, the PLC control unit is connected with coil taps, the current amplitude and phase positions of the coils are changed, and transverse magnetic field modulation can be achieved; the stirrers on each layer are independently connected to the PLC control unit, so that the longitudinal magnetic field modulation is achieved; the speed measuring system comprises a speed measuring probe and an intelligent processing unit, the speed measuring probe is arranged on narrow faces of the crystallizer, and the flow velocity of the metal fluid in the crystallizer can be measured in the direction of the wide faces; a measured speed signal is sent to the intelligent processing unit by the speed measuring probe, and the signal is processed by the intelligent processing unit and then output to the PLC control unit.

The invention relates to an electromagnetic deflection device for electron beam trajectory control and application of the electromagnetic deflection device and belongs to the field of electromagnetism. According to the electromagnetic deflection device for the electron beam trajectory control, an excitation power source is arranged outside a vacuum chamber of an electron beam processing device, a magnetic field generating device is arranged in the vacuum chamber, a magnet yoke is of an enclosed type, iron cores are symmetrically distributed in the magnet yoke and fixed on the magnet yoke, hollow coils are fixed on the iron cores, parts are placed in an air gap space between the iron cores, the parts are arranged under an electronic gun of the electron beam processing device, the magnetic field generating device is connected with the excitation power source through a through-wall plug which is used for coil tap, and a probe of a Hall magnetic detector is arranged in the air gap space and connected with a processing display unit arranged outside the vacuum chamber through the through-wall plug. The electromagnetic deflection device for the electron beam trajectory control is used for controlling motion trajectory of electro beams so as to meet the processing requirement of parts with special shapes, can detect and adjust a generated magnetic field in real time, enables the strength of the magnetic field to meet the processing requirement, can be directly used with an existing electron beam processing device in an integrated mode through the through-wall plug, and is wide in application range and high in economic value.

The invention discloses a high-voltage power-saving voltage regulator with power saving function used in a high-voltage power line. The high-voltage power-saving voltage regulator adopts a high-voltage vacuum contactor connected in a voltage regulating coil, and output voltage is regulated by the high-voltage vacuum contactor switching a tapping shift of the voltage regulating coil of the high-voltage power-saving voltage regulator. The high-voltage vacuum contactor has less abrasion, high grade of withstand voltage and small switching current. In addition, the input terminal and the output terminal of the high-voltage power-saving voltage regulator are respectively connected with a group of transfer switches, and the connections of input and output of the high-voltage power-saving voltage regulator are changed by on-off of the transfer switches, so that the high-voltage power-saving voltage regulator has the function of voltage boost and reduction without increasing internal windings of a coil.

The invention relates to an on-load tap changer comprising semiconductor switching elements for uninterrupted switching between fixed tap changer contacts which are electrically connected to winding taps of a tapped transformer. Each of the fixed tap changer contacts can be connected to a charge diverter either directly or, during switching, via the semiconductor switching elements that are connected therebetween. According to the invention, the charge diverter has fixed, divided diverting contact pieces in order for the semiconductor switching elements to be electrically isolated from the transformer winding during stationary operation.

This invention discloses one three-way stable adjusting device compensating coil inducing voltage and touch point arch removing method, which comprises compensating transducer series initial coil, control circuit and its coil head touch point, which is characterized by the following: setting voltage reducing touch points between multiple series compensating coils to divide multiple series coil into front and back sections; The coil two ends are connected to one arc removing coil controlled by arc coil to Reduce the inducing coil voltage below 660 v; Connecting touch point coil in each initial compensation coils two ends to keep current unchanged through coil by reverse electricity energy to make the adjusting device operate reliable.

A high-precision automatic wire winding device for fuel injector and its method relate to an automatic wire winding device and its method. The device comprises a tension control mechanism, a main wirewinding mechanism, a coil tap winding mechanism and a control system. The control system is respectively connected with a tension control mechanism, a main winding mechanism and a coil tap winding mechanism. The method comprises the following steps: step S1. Waiting starts, step S2. Winding the first tap of the coil, step S3. Winding the coil, step S4. Winding the second tap of the coil, step S5.Breaking the coil, and step S6. Removing the coil. As that tension control mechanism, main winding mechanism, Cooperation between that coil tap win mechanism and the control system, The invention canaccurately control the speed and winding position of the coil in the winding process, so that the winding wire is evenly distributed, the consistency is good, the wire tightness in the winding process can be ensured to be suitable, the requirements of the high-precision metering fuel injector for the winding wire are met, and the coil has the characteristics of good precision, high efficiency andhigh qualified rate, and is easy to be popularized and used.

The invention provides a method designed for timely controlling the power of sodium lamp, comprising a sodium lamp inductance ballast; the output power adjustment is realized by changing the resistance of the sodium lamp inductance ballast. In order to change the resistance of the sodium lamp inductance ballast, a time program control circuit which takes a micro-processor chip as a core to drive a relay and the coil tap of the sodium lamp inductance ballast is shifted in timing, therefore, the resistance value of the sodium lamp inductance ballast is changed, thus carrying out the control on the output power. The method for timely controlling the power of the sodium lamp changes the resistance of the relay with the difference of time by controlling the time with the micro-processing chip, thus achieving the object of controlling the power of the sodium lamp. The method of the invention leads the sodium lamp to reduce the power in a certain time, saves the power, and effectively reduces the consumption of the power energy. Meanwhile, the control method of the invention leads the time control circuit to be independently connected externally with the sodium lamp ballast, thus effectively reducing the use cost of the control method.

The invention discloses an electromagnet coil tap type magnetizing and demagnetizing lifting electromagnet. The lifting electromagnet comprises a three-phase full-control-bridge rectification circuit composed of unidirectional silicon controlled rectifiers V1-V6 and silicon controlled rectifier bypass protections, a three-phase transformer T, a contactor J and a bidirectional silicon controlled rectifier V7, wherein the contactor has two pairs of normally-open contacts and normally-closed contacts; the upper and lower ends of a space between the output end of the three-phase rectification circuit and an electromagnet coil DL are respectively connected with the two pairs of the normally-closed contacts controlled by a controller; the electromagnet coil is divided into an upper coil L1 and a lower coil L2, and two end points of one normally-open contact JK3 are connected with the outer end point of the lower coil and the output point TB of the transformer respectively; the electromagnet coil tap LX is connected with another normally-open contact JK1, the normally-open contact is connected with the bidirectional silicon controlled rectifier V7, and the bidirectional silicon controlled rectifier is connected with the other output point TA of the transformer; and the trigger ends G1-G6 of the unidirectional silicon controlled rectifiers V1-V6 and the trigger end G7 of the bidirectional silicon controlled rectifier V7 are controlled by the controller, and the end points of the contactor are controlled by the controller.

An acquiring and amplifying device of a passive AC micro-current comprises a multi-winding insulating coil, coil taps of N times of number of turns are extracted from the coil to be connected with device leading-out terminals respectively, and the device leading-out terminals comprise a common terminal 0, 1N-6N times of terminals. A discharge display lamp and a discharge tube are connected parallelly between every two of the common terminal 0 and the 1N-6N leading-out terminals, a wiring plug is connected with the device leading-out terminals via an experimental line, and the whole amplifying device is placed in an insulating plastic device shell with a box cover. The acquiring and amplifying device of the passive AC micro-current of the present invention enables the work efficiency to be improved substantially, is low in device manufacture cost, and possesses certain application and popularization values.

The invention discloses a control circuit for a gas shielded welding machine, including a main control circuit board, a gearshift switch, a transformer, a rectifying circuit, a shift select switch driven-by-wire and a relay, wherein the selection end of the shift select switch driven-by-wire connects to an output end of the main control circuit board, output end of the shift select switch driven-by-wire connects to an input end of the corresponding relay, and a power source connects to the gearshift switch after supplying power supplying via a switch of the relay. The shift select switch driven-by-wire is arranged on a part of a pistol, thus when welding voltage is required to be adjusted during in remote operation, the shift select switch driven-by-wire is just to be moved, then the relay on the welding mainframe will attract according to a corresponding control signal, adjust and turn on different primary coil tap of the transformer, thus adjusting of the welding voltage can be achieved. The invention can be used more conveniently, in addition, electric spark generated in switching by a mechanical shift select switch can be avoided due to the switching is carried out by the relay, thereby, the invention has longer service life.

The invention relates to an outer-winding type current transformer used in the electric power industry. The outer-winding type current transformer is composed of a primary conducting bar, a primary winding, a shell, a conducting tube, a secondary winding, a secondary conducting bar, an overvoltage protector, an insulation terminal, an inner insulation plate, an outer insulation plate, a protective cover, a conducting base and the like. A sleeve is arranged on a base, the secondary winding is arranged in an inner cavity of the shell, the primary conducting bar is connected with the primary winding through a lead, the protective cover is arranged on the outer side of the shell, the primary winding penetrates through the conducting tube to be arranged in the protective cover, and various grades of coil taps of the primary winding are respectively connected with the secondary conducting bar. Due to the fact that multiple turns of primary winding coils are arranged in the conducting tube in the secondary winding in a penetrated mode, the current with the low current ratio is increased, and the current output range is expanded; due to the arrangement of the overvoltage protector, devices of the current transformer can be protected; due to the fact that the primary winding penetrates through the conducting tube to be evenly distributed in the protective cover outside the shell, the winding accuracy is high.

The invention provides a compact power divider chip based on a folded coil. The compact power divider chip comprises the folded coil, an RC series network and two resonant capacitors, wherein the folded coil comprises a first-stage coupling coil and a second-stage coupling coil which are connected; the first-stage coupling coil is formed by mutually winding two inductors which are completely symmetrical up and down, and a coil tap of the first-stage coupling coil is connected with a combining port of the power divider chip; the second-stage coupling coil is formed by mutually winding two inductors which are completely symmetrical up and down; the second-stage coupling coil is folded into the first-stage coupling coil; the RC series network is arranged in the first-stage coupling coil and comprises a first-stage RC series network and a second-stage RC series network; the first-stage RC series network is connected with two power division paths of the first-stage coupling coil; the second-stage RC series network is connected with two power division paths of the second-stage coupling coil; and the two resonant capacitors are connected to the joint of the first-stage coupling coil and the second-stage coupling coil and are connected to the ground. According to the compact power divider chip, the size of the power divider chip can be greatly reduced, and excellent performance is shown.

The invention relates to a linked voltage regulation non-excitation tap switch for a transformer, which comprises an insulator, an upper support, a lower support and a rotating shaft; and each phase corresponding to the switch is provided with two layers of static contacts and moving contacts bridged with two adjacent static contacts. The tap switch is characterized in that: one layer of the two layers of static contacts of each phase is provided with static contacts of an upper or a lower voltage regulation tap of a linked voltage regulation coil, the two adjacent static contacts form a tap position, the tap positions are distributed along a circumferential direction in reduced progressively sequence from large to small, and another minimum tap position is repeatedly arranged after one minimum tap position; the other layer is provided with static contacts of a lower or an upper voltage regulation tap of the linked voltage regulation coil, the tap positions are distributed along the circumferential direction in reduced progressively sequence from large to small, and another maximum tap position is repeatedly arranged before one maximum tap position; and the maximum tap position in one layer of the two layers of static contacts set in each phase corresponds to the foremost tap position of the maximum tap position arranged in the other layer. The tap switch is simple and compact in structure and reasonable in setting, achieves multi-tap voltage regulation by using less voltage regulation coil taps, can complete operation at one time, and has high reliability and convenient use.

The invention relates to an innovative contact switching mechanism of a tapping switch for a transformer. A center hole of moving contacts penetrates an integrated pin; two bearings are embedded at two ends of the integration pin respectively; each bearing is embedded into a sliding block; each sliding block abuts against a spring; each spring is supported on a support; the supports are fixed on a main shaft; fixed contacts are circumferentially distributed on the main shaft; every fixed contact is connected with a transformer coil tap through a cable. The operation mode of the innovative contact switching mechanism includes that every moving contact is driven to be circumferentially switched and in bridging joint between the two corresponding adjacent fixed contacts to switch on a circuit when the main shaft is controlled to rotate and accordingly a shift regulating task of the tapping switch is achieved. The innovative contact switching mechanism is characterized in that the penetration serial connection is performed on the butterfly-shaped moving contacts which are pairwise folded through squeezing caps which are arranged at two ends of the integration pin respectively to apply the elastic pre-tightening force for axial condensation. According to the innovative contact switching mechanism of the tapping switch, the contact is simultaneous, the structure is simplified, the combination is flexible, the switching is synchronous, the reversing is accurate, the temperature rise is low in value, the resistance is stable, the operation is reliable, and the torque is light.

The invention relates to a rapid saturable reactor which comprises a closed loop iron core. A dotted terminal of a DC coil of an iron core limb is connected with a terminal I, and an unlike terminal of an AC coil of the iron core limb is connected with a terminal II. A dotted terminal of an AC coil of another iron core limb is connected with the terminal I, and an unlike terminal of a DC coil of the iron core limb is connected with the terminal II. Thyristors are connected between a DC coil tap and the residual terminals of the AC coil of the same iron core limb in series, and control terminals of all the thyristors are connected with a control circuit. A pair of resistors is connected between an unlike terminal of a DC coil L1 and a dotted terminal of a DC coil L3, and a pair of resistors is connected between an unlike terminal of an AC coil L4 and a dotted terminal of an AC coil L2. The nodes between the two pairs of resistors are connected with diodes. The control circuit controls the sizes of the trigger angles of all the thyristors, and the reactance value of the rapid saturable reactor can be adjusted continuously.