159results about How to "No arcing" patented technology

The invention discloses a bidirectional-breaking bridge-type circuit breaker and an application method thereof. The circuit breaker comprises a main current circuit, a transfer current circuit, an overvoltage limiting circuit, a firs access end (S1), and a second access end (S2). A first branch circuit of the transfer current circuit formed by the series connection of a first power semiconductor device (A1) and a fourth power semiconductor device (A4) is in parallel connection with the main current circuit. A second branch circuit of the transfer current circuit formed by the series connection of a second power semiconductor device (A2) and a third power semiconductor device (A3) is in parallel connection with the main current circuit. A power semiconductor device (A0) is a bidirectional-connection power semiconductor device, and the first, second, third, fourth and fifth power semiconductor devices (A1, A2, A3, A4 and A5) are all unidirectional-connection power semiconductor devices. The power semiconductor device (A0) and the fifth power semiconductor device (A5) can cut off the current.

The invention relates to an IGBT-based bridge-type serial-parallel compensating power regulator, wherein a digital signal processor DSP performs real-time detection on an input network voltage; when the variation of the amplitude value of the voltage is detected, the DSP controller controls a bridge-type voltage converter to generate a corresponding voltage so as to perform series compensation on the input voltage, thereby the voltage of a distribution network is automatically adjusted and the stability of a load voltage is maintained; and when the wavy distortion of a network current is detected, the DSP controller controls a bridge-type current converter to generate a reverse current so as to perform parallel compensation on the network current, thereby improving the waveform of the network current. Therefore, the IGBT-based bridge-type serial-parallel compensating power regulator not only can inhibit the interference of dropping and rising of the network voltage on power consumers but also can improve the waveform of the current, and actually improves the power quality of a power system in all aspects.

The invention provides a flexible automatic auto-passing phase separation system for electrified railway ground. The system comprises a high-voltage switch unit, a ground electric phase separation continuous power supply current conversion device and a train direction and position detection unit. The high-voltage switch unit is used for switching on / off high-voltage power supplies correlated withan alpha-phase traction bus, a beta-phase traction bus and a traction power supply arm. The ground electric phase separation continuous power supply current conversion device includes an alpha-phase side single-phase multi-winding rectifier transformer, a beta-phase side single-phase multi-winding rectifier transformer, an inverter transformer and a three-port four-quadrant converter; the three-port four-quadrant converter performs alternating current-direct current-alternating current change on an alpha-phase traction bus power supply and a beta-phase traction bus power supply which are accessed; a single-phase power supply is output through high-voltage winding of the inverter transformer and connected in series with high voltage of secondary sides of the alpha-phase side single-phase multi-winding rectifier transformer and beta-phase side single-phase multi-winding rectifier transformer, and then resultant voltage supplies power to an electric phase separation neutral section N. Thetrain direction and position detection unit is used for detecting the direction and position of a train. According to the system, continuous power supply of the electric phase separation neutral section of a contact network can be achieved so that the train can pass through phase separation with no power off and without generating electric arcs, overvoltage impact, overcurrent impact and the like.

The invention discloses an asynchronous door knife device of an elevator car door lock. The asynchronous door knife device comprises a door knife back plate, a lock hook assembly, a knife arm connecting rod assembly, a door knife sliding block, a sliding block reset spring and a linkage unlocking assembly. The lock hook assembly comprises a fixed lock seat and a car door lock hook. The car door lock hook is rotationally connected to the door knife back plate; the knife arm connecting rod assembly comprises a left knife arm, a right knife arm, a door knife upper connecting rod and a door knifelower connecting rod. The left knife arm, the right knife arm, the door knife upper connecting rod and the door knife lower connecting rod are mutually hinged to form a parallelogram connecting rod mechanism; the door knife sliding block is slidably connected to the door knife back plate. The door knife sliding block slides between a first position and a second position relative to the door knifeback plate; the sliding block reset spring exerts acting force on the door knife sliding block to push the door knife sliding block to move from the second position to the first position. The device has the beneficial effect that the accidents that the car door cannot be opened and closed in an unlocking area due to the fact that the car door is jammed and cannot be closed in place are avoided.

The invention is concerned with the airtight low voltage apparatus with working contact and its no-air sealing method. For example, the no air no arc AC contactor, includes the airtight room with the tegmen and the base, which is fixed with the electromagnetism operating system, the contact operating system, and the energy-saving rectifier circuit board, also, the fixed contact down-lead and the coil down-lead. The edge of the tegmen connects the base form the ring of notch. The edge of the base connects the tegmen form the ring of uplift, which joins with the notch makes the tegmen, the base become one, form the airtight room. The invention also provides the method of sealing, it is: conducts the anaerobic treatment to airtight room, fills in with the inert gases and sealant, which this way prolongs the no-air environment to ensure the performance of the moving / fixed contacts.

The invention provides an explosion-initiating constant-current ignition module for an initiating explosive device. The explosion-initiating constant-current ignition module comprises a preceding-stage current-limiting circuit and a backward-stage current-limiting circuit, and the preceding-stage current-limiting circuit and the backward-stage current-limiting circuit each comprises a current-limiting circuit and a drive and power circuit. The explosion-initiating constant-current ignition module for the initiating explosive device has the beneficial effects that a solid-state switch MOSFET is selected as a constant-current protection switch to be used for replacing an ignition circuit in former spacecraft initiating explosive devices, constant-current working can be conducted according to instructions, an instruction fault tolerance function is achieved, adjusting and current-limiting resistor replacing are not needed, multiple paths of initiating devices can share one ignition module, and the explosion-initiating constant-current ignition module is a restorable and reusable ignition circuit product. Therefore, the explosion-initiating constant-current ignition module has the advantages of being easy to operate, short in production and adjusting time, high in reliability and the like.

An LED explosion-proof lamp comprises a casing and an LED light source. All of the LED light sources are series connection. Each LED light source is an LED connected with a zener diode in parallel. A heat radiating piece integrated with the casing and a heat radiating fin are arranged on the casing. The explosion-proof lamp is sealed wholly. The invention is a novel explosion-proof lamp taking the LED as the light source, which has long service life, good optical performance, simple circuit, small volume, safety, environment protection, power consumption. The LED light sources are connected in series. A LED damage does not influence the other LED light sources to work normally. Each component of the LED explosion-proof lamp is connected with a high sealability to achieve the protection grade IP67. A plurality of heat radiating parts are provided to ensure the LED explosion-proof lamp to work normally and stably below 55 DEG C. The installation mode is flexible and adaptable for various occasions.

The invention relates to a tabulate plasma generating device under atmospheric pressure. A closed space is provided through a discharging capacitor, a worktable is used for arranging substances to be processed, an alternating current pulse power supply provides a discharging voltage for a plasma discharging board, a Tesla coil is used for generating auxiliary discharging, a trigger medium blocks discharging, and the plasma discharging board is used for main discharge. When the device discharges, the plasma is generated outside the discharging board so that the device can process objects with more complicated shapes and larger sizes, have wider range of applications without needing high voltage or generating electric arcs and have high safety, great disposable processing area, short processing time and high efficiency.

The invention discloses an asynchronous door knife assembly of an elevator car door lock. The asynchronous door knife assembly comprises a door knife back plate, a lock hook assembly, an unlocking assembly, a knife arm connecting rod assembly and a spring reset assembly. The lock hook assembly comprises a fixed lock seat installed on an elevator door motor and a car door lock hook capable of hooking the fixed lock seat for locking. The car door lock hook is rotationally connected to the door knife back plate; the unlocking assembly comprises an unlocking piece used for pushing the car door lock hook to rotate so that the car door lock catch can be disengaged from the fixed lock seat. The unlocking piece is connected to the right cutter arm and driven by the right cutter arm to move. The assembly has the beneficial effect that the accidents that the car door cannot be opened and closed in an unlocking area due to the fact that the car door is jammed and cannot be closed in place are avoided.

The invention relates to a locking device of a breaker operating device. The locking device comprises a casing (1) and a button (2) mounted in a button groove (101) of the casing (1) and is characterized in that the casing (1) is internally provided with a locking mechanism (3), and the locking mechanism (3) can lock or unlock the button (2). The locking device is advantaged in that the locking device is added to the internal portion of a breaker, only after pressing a lock button, an operation button is pressed to realize closing of the breaker, when the operation button is pulled out, the breaker is disconnected; when the lock button is not pressed, the operation button is locked by the lock button, the operation button can not be pressed, the breaker can not be closed, no arcs are generated between a wiring end of the breaker and a busbar, and safety of the equipment is guaranteed.

The invention provides a medium- and high-frequency electromagnetic heating clasping device for heating and unfreezing a pipeline, and aims at solving the problems that a wellhead is roasted and heated with open fire during replacing a packing, which is small in working efficiency and easy to cause potential risk, and the mode of coiling the pipeline with a coil to heat at the field is limited and cleaning cannot be performed. The device comprises a clasping body; the clasping body comprises two symmetric semicircular stainless steel bodies and is connected through a hinge; a heat insulating plate is arranged on the clasping body, and a high frequency coil is paved on the heat insulating plate; a temperature sensor is mounted on the clasping body; when in use, the device is clasped into an oil production packing in an oilfield or water and steam pipeline and other heated objects, then a power supply is connected, the temperature and parameters are set as requirement, and finally petroleum or ice in the heated object can be unfrozen after the set temperature is reached, and thus the purpose of normal construction can be reached; the device has the characteristics of being convenient to mount and dismount, high in working efficiency, and easy to be cleaned.

The invention relates to an impulse discharge electrode, which comprises a high-voltage electrode (1), a low-voltage electrode (2), an insulated sleeve (3), and a reflector (4). Wherein, said four parts both use coaxial structures; the high-voltage electrode (1) is a round rod, whose outer part is mounted with an insulated sleeve; the high-voltage electrode (1) and the insulated sleeve are connected by screw or fixed together; the outer left section of insulated sleeve is sheathed with a tube low-voltage electrode (2) while the right section is sheathed with a cylinder reflector (4) with central hole; the insulated sleeves have outer screws; the low-voltage electrode (2) and the central hole of cylinder reflector (4) have inner screws; the left end surface of cylinder reflector (4) is a inward concave semi-ellipsoid; the cylinder reflector (4) is connected to the insulated sleeve; the end of high-voltage electrode (1) is at the focus of semi-ellipsoid. The invention has simple structure, better discharge stability and repeated property, with long service life and high electric sound transform efficiency.

The invention discloses a low-temperature plasma generator and a method for preparing the activated water. The device includes a power source, an insulation container and a plasma generating mechanismarranged in the insulation container, wherein the plasma generating mechanism includes an electrode array board, a porous electrode column and a blocking dielectric tube, the electrode array board isconnected with a high-voltage output end of the power source, the porous electrode column is connected with a low-voltage input end of the power source and grounded through a ground wire, the electrode array board includes a connection board and an electrode column array group which consists of high-voltage electrode columns and is arranged at the bottom of the connection board, the porous electrode column is internally distributed with through holes matched with the high-voltage electrode columns, the blocking dielectric tube is arranged between the through holes and the high-voltage electrode columns, and at least two air inlet holes for loading working gas are symmetrically arranged on an upper side wall of the insulation container. The activated water can effectively kill bacteria andfungi live, the inactivation effect on the fungi of a specific species is significant, and most of the fungi (>85.2%) in the liquid can be effectively killed within 1 minutes.

The invention discloses a high-power wind power generating system which comprises a wind power generator, a zero-point switching circuit, an intelligent control system, a wind power generating transformer and a power utilization network. The wind power generating transformer is arranged in the zero-point switching circuit and used for voltage transformation of power generated from the wind power generator and then connecting the power to the power utilization network. The zero-point switching circuit is arranged between the wind power generator and the power utilization network. The intelligent control system is used for controlling the wind power generator to generate power according to control parameters. The wind power generator comprises an intelligent fuzzy controller, a PID(proportion, integration and differentiation) hydraulic valve, an air valve, a wind power sensor and a rotational speed sensor, the wind power sensor is connected with the intelligent fuzzy controller, the rotational speed sensor detects rotational speed of a generator rotor and connected with the intelligent fuzzy controller, and the intelligent fuzzy controller controls the PID hydraulic valve to regulate the air valve by analyzing data transmitted from the wind power sensor and the rotational speed sensor. The high-power wind power generating system can be connected to a power grid as a thermal power generation system, and is adaptable to severe environments.

The invention discloses a manual maintenance switch with a secondary unlocking structure, which comprises a connector plug, a connector socket and a handle, wherein the connector plug and the connector socket are matched and connected mutually; and the handle enhances connection between the connector plug and the connector socket. The handle rotates around the connector plug to control an anode and the connector socket to perform axial primary separation or closing. A secondary locking mechanism is also arranged between the anode and the connector socket. The connector plug and the connector socket have a first locking state, a second locking state and a third state. In the first locking state, the handle locks the connector plug and the connector socket to enable the two to be totally closed. In the second locking state, due to rotation of the handle, the connector plug and the connector socket are driven to deviate axially to enable signal terminals of the two to be broken. In the third state, the secondary locking mechanism drives the anode and the connector socket to further deviate axially to enable power and signal terminals of the two to be separated totally. In the case of unlocking, breaking of the signal terminals can be firstly carried out and breaking of the power terminals is then carried out, a time difference is formed by the two times of breaking, hot plugging is avoided, arcs are not generated, and the use is safer.

The invention discloses a coupler for an electric appliance. The coupler for the electric appliance comprises an input socket assembly (1) and an output plug assembly (3); the input socket assembly (1) comprises an input socket seat body (10); a strong current input assembly and a weak current control input end assembly are arranged on the input socket seat body (10); the output plug assembly (3) comprises an output plug seat body (30); a strong current output assembly and a weak current control output end assembly are arranged on the output plug seat body (30); and when the input socket assembly (1) is coupled with the output plug assembly (3), at least one weak current control input end of the weak current control input end assembly is contacted with the weak current control output end of the corresponding weak current control output end assembly after the strong current input assembly is contacted with the strong current output assembly.

The present invention relates to an AC non-arcing switch electric equipment, including conductor series-connected in its main circuit, iron core which are formed into the out-of-phase induced current generator with the said conductor together, main winding, auxiliary winding and phase-shifting element, executive main contact point of switch and control circuit with the function of self-locking by utilizing working current induction and automatic unlocking after the working current is passed through zero. Said invention also provides its working principle, and under the condition of non-producing electric arc it can cut off the power supply of working circuit.

A wireless electric connector comprising a circular plug and its matching socket. In the plug and the socket, there are respectively corresponding electric contact terminals. The characteristics are: the depression rod on at least one moveable contact of the plug for isolating moveable contact from stationary contact; the one ed of the rod passes through the bottom of the plug being contacted with moveable contact of outer ring of the socket; the stretching arm from the middle of the rod is booked-touching the above-mentioned moveable contact; on the other end of the rod is equipped with a return-spring for limiting the rod; the other end of the spring is on a block. During the operation of inserting the plug, from beginning to the end, no contact occurs between phase-line moveable contact and stationary contact, so no production of are, keeping the contact sleeve no fault, achieving long service life of the connector.

The invention provides a low-voltage intelligent synchronous switch. The switch comprises a control module, a current detection module, a voltage detection module, an input module, a zero-crossing switching module, a communication module, a power module, and a display module. The control module is connected with other seven modules. The power module is connected with the zero-crossing switching module, the communication module, and the display module. Through cooperation of the zero-crossing switching module and the control module, the switch can be switched to a capacitor or an AC power switch on a zero-crossing point, realizing switching-in of the capacitor on a voltage zero-crossing point and switching-off on a current zero-crossing point. In a switching process, the switch has no inrush current, no electric arc, and switch contacts are not damaged. The switch has no inrush current in switching, contacts do not sinter, and the switch is small in volume, low in energy consumption, and does not lead in transient state and harmonic waves. The switch can adapt to various extreme cold extreme hot harsh environment, and can satisfy various occasions of reactive capacity requirements.

The invention discloses a low-pressure fusing disconnecting switch. The low-pressure fusing disconnecting switch comprises a base (1), a silicon rubber insulator support column (2), a knife switch arranged on the silicon rubber insulator support column (2), a fusing body (10) and a wiring board (11), wherein the knife switch comprises a moving contact (3), a static contact (9), two knife switch plates (4), a pull ring (6) and a pressure spring (13); the side face of the moving contact (3) is provided with a moving contact concave touch surface (17), and / or the side face of the static contact (9) is provided with an annular concave touch surface (18); the contact surface of each knife switch plate (4) and the moving contact (3) is provided with a front-end convex touch surface (16), and the contact surface of the each knife switch plate (4) and the static contact (3) is provided with an annular concave touch surface (15); and the low-pressure fusing disconnecting switch also comprises a flash guard. The low-pressure fusing disconnecting switch provided by the invention has the advantages of simple structure, convenience in use, safety, reliability, low processing cost and large contact area; when the switch is opened and closed, the electric arc can not be generated, thereby prolonging the service life.

The invention relates to a stepless speed regulation device for controlling a direct-current motor for the aviation industry. A given integrator, a speed regulator, a current regulator, a trigger pulse generator and a silicon controlled rectifier are connected sequentially. The input end of a current regenerative feedback circuit is connected with the output end of the silicon controlled rectifier, and the output end is connected with the input end of the current regulator. A speed measurement feedback circuit for measuring the rotation speed of the motor is connected with the input end of the speed regulator. The device has the advantages that good starting, breaking, rotation and counter rotation and speed regulation performances are provided; large-range stepless speed regulation can be performed on the motor by changing the input voltage or exciting current of the motor simply, and accordingly, the motor rotation speed is stable, and arcs and electric sparks are avoided; the device is simple in structure, convenient to operate, small in own consumed power, low in operation cost and capable of being used in various complex environments.

The invention relates to the technical field of aluminium electrolysis, in particular to an aluminum barrel anode clamping device which comprises a clamping frame / anode bus rack and at least one anodelifting mechanism and further comprises at least one aluminum barrel anode, wherein the at least one anode lifting mechanism is connected with the clamping frame / anode bus rack and is used for lifting the clamping frame / anode bus rack; the at least one aluminum barrel anode is arranged in the clamping frame / anode bus rack and is internally provided with a plurality of conductors; the aluminum barrel anode comprises an aluminum barrel; a plurality of pressing and lifting mechanisms are arranged on the clamping frame / anode bus rack; and at least one first compressing mechanism or conducting element in contact with the aluminum barrel, or the conducting element and the first compressing mechanism are arranged on each of the pressing and lifting mechanisms. The pressing and lifting mechanismsare arranged on the clamping frame / anode bus rack to automatically lift the clamping frame / anode bus rack to an assigned height; and the aluminum barrel anode clamping device is high in degree of automation, simple and steady to operate and high in efficiency.

A relay switch circuit disclosed by the invention comprises a control circuit and a relay, wherein the control circuit sends a first control signal to the relay; the relay witch circuit also comprises a time-delay circuit, a first switch element, a second switch element and a voltage regulation element; the relay is connected with the first end of the first switch element while the second end of the first switch element is grounded; the first end of the voltage regulation element is connected with the first end of the first switch element while the second end of the voltage regulation element is connected with the first end of the second switch element, and the second end of the second switch element is grounded; the control circuit sends a second control signal to the time-delay circuit; the time-delay circuit sends a third control signal to the first switch element; and the time-delay circuit sends a fourth control signal to the second switch element. Arc-extinction starting and arc-extinction stopping of the relay are realized by the relay switch circuit through the control circuit, the time-delay circuit, the first switch element, the second switch element and the voltage regulation element; and meanwhile, the first switch element is subjected to anti-breakdown protection.

The invention relates to a reversible adjustment dynamic voltage adjuster. The reversible adjustment dynamic voltage adjuster comprises a DSP control circuit, two PWM converters connected in series, and a sine wave filter which is in an inversion state and composed of inductors and capacitors. One end of an input voltage passes the secondary side of a series compensation transformer and then is output to a load through the sine wave filter, output of the first PWM converter is connected with the two ends of the primary side of the series compensation transformer, and output of the second PWM converter is connected with the front end of the load; An energy storage flat wave capacitor is connected between the two converters connected in series, the DSP control circuit acquires input voltage instantaneous values and input voltage phase signals, the DSP control circuit outputs control signals to the two PWM converters, and the working states of the two PWM converters are adjusted. Through two-way adjustment of energy, interference of fall and rise of network voltages in power consumers can be quickly restrained, and therefore the power quality of a power distribution system is improved.

The invention provides a telescopic contact assembly for a thyristor on-load tap switch. The telescopic contact assembly for the thyristor on-load tap switch comprises insulation supports symmetrically fixed to the two ends of a touch rod through locating pins. The insulation supports are connected through a connecting piece. Each installation support is provided with a telescopic contact perpendicular to the connecting piece. Static contacts are symmetrically arranged at the two ends of an orientating guide board. The telescopic contact at one end of the connecting piece is provided with a lead connecting piece connected with a thyristor circuit and used for enabling the telescopic contact and one static contact to be connected or disconnected with the thyristor circuit and the other end of the connecting piece is provided with a lead connecting piece used for enabling the touch rod and the other static contact to be connected or disconnected with the thyristor circuit. Compared with the prior art, the telescopic contact assembly for the thyristor on-load tap switch has the advantages that the requirement for timing sequence control of the thyristor circuit is satisfied, the number of moving contacts and the number of the static contacts can be increased, recovery voltage between fractures is effectively reduced, and therefore the different requirements for voltage adjustment or capacitance adjustment of a transformer are satisfied.

The invention discloses a real-time balance device for a low-voltage power distribution network line and a working method thereof, relates to a current balance device for a medium-low voltage line and a working method thereof, and aims to fundamentally solve the problem of imbalance of three-phase current by realizing automatic real-time balance of the low-voltage power distribution network line. The real-time balance device is arranged on a low-voltage side of a transformer, and comprises a host and a plurality of slaves, wherein the host is electrically connected with the low-voltage side of the transformer through a three-phase line; each phase of the three-phase line is provided with a current transformer; the slaves are arranged between the low-voltage side of the transformer and a plurality of single-phase loads; and the slaves are connected with a plurality of single-phase loads. Through adoption of the real-time balance device and the working method thereof, three-phase current of a low-voltage power distribution network bus, current of power utilization branches and user load current under the branches can be monitored all the time; the loss of the line is reduced; the electric energy quality of a power grid is optimized; and the problem of imbalance of three-phase loads is solved fundamentally. The real-time balance device is simple in structure, and has very high economic efficiency.

The invention discloses a liquid metal type ceramic high-voltage variable resistance device, which comprises a ceramic resistance cavity, a liquid metal, a left electrode, a right electrode and a gasmedium. The left electrode and the right electrode are fixed at the left and right ends of the ceramic resistance cavity to form a sealed cavity. The ceramic resistance cavity is composed of a coarsecavity with a larger diameter and a thin cavity with a smaller diameter, which are communicated with each other. The liquid metal is filled in the ceramic resistor cavity, the liquid metal needs to beable to enter the cavity with smaller diameter and conduct the left electrode and the right electrode when the liquid metal is horizontally placed, and the liquid metal cannot fill the ceramic resistor cavity. The gas dielectric fills the remaining ceramic resistor cavity, and the gas dielectric fills the remaining ceramic resistor cavity, and the gas dielectric fills the remaining ceramic resistor cavity must have good insulation characteristics. The device is a variable impedance FCL, which is connected in series in the system circuit. In normal operation, the impedance of the system is very small, but in the event of a fault, the impedance can be rapidly increased without commutation, so that the fault can be limited before reaching the peak.