124results about How to "Arcing suppression" patented technology

A method and apparatus using deep pleated filters to provide efficient and safe electrically enhanced filtering (EEF), with ultra low pressure drop, higher efficiency of particulate removal and higher dirt holding capacity over the life of the filter. An EEF may be constructed with a housing, with or without an internal air moving device such as a fan, a deeply pleated filter, preferably a V-pack filter with sets of downstream ground electrodes and charge transfer electrodes borne by the exterior surface of the filter packs that form the filtering element. An ionizer assembly that ionizes the gas and charges particles entering the deeply pleated filter and also transfers a charge to the charge transfer electrodes on the filter pack. A plate seals the gasket on the filtering element against the ionizing assembly. A high electrical potential is applied to charging elements in the ionizer and, in some embodiments, a fan or motor assembly. The charge transfer electrodes enable the device to function with a high particle collection field between the charge transfer electrodes and the downstream grounded electrodes to safely and efficiently attain higher entrapment of the particles on the filter medium.

A commutating circuit breaker that progressively inserts increasing resistance into a circuit via physical motion of a shuttle that is linked into the circuit by at least one set of sliding electrical contacts on the shuttle that connect the power through the moving shuttle to a sequence of different resistive paths with increasing resistance; the motion of the shuttle can be either linear or rotary. At no point are the sliding stator electrodes separated from the matching stationary stator electrodes so as to generate a powerful arc, which minimizes damage to the sliding stator electrodes. Instead, the current is commutated from one resistive path to the next with small enough changes in resistance at each step that arcing is suppressed. The variable resistance can either be within the moving shuttle, or the shuttle can comprise a commutating shuttle that moves the current over a series of stationary resistors.

A rotatable plug with an arcing resistant mechanism is disclosed which includes an upper cover, a lower cover mating with the upper cover to form a holding space, a mount placed in the holding space, a rotatable rack placed on the mount, a pair of conductive terminals fixed on the lower cover and a pair of connecting slices. The rotatable rack includes a pivot and a pair of prongs, wherein the prongs are fixed on the both ends of the pivot respectively. Each connecting slice connects the corresponding prong of the rotatable rack with the corresponding conductive terminal. Therefore a circuit exists between the prongs and the conductive terminals, so that the rotatable plug with an arcing resistant mechanism can suppress the arcing that is produced between the prongs and the conductive terminals. Thus the rotatable plug with an arcing resistant mechanism is used safely and has a long lifetime.

The invention discloses an online measurement method for welding line characteristic point positions. The method comprises the following steps: a welding gun is positioned in an initial welding position; image information of welding line contours is initialized to obtain welding line initial positions; welding line images are acquired; welding line positions at present are predicted; the modelingof the welding line images in a time sequence direction is finished; characteristics of the welding line images are extracted; the tracking positioning of the welding line characteristics points is finally realized; and a motion trajectory of the welding gun is calculated. Meanwhile, the invention discloses a welding line trajectory automatic measurement system; and the system comprises an embedded development board, a laser visual sensor, a welding robot, a robot controller, mated welding equipment and a workpiece clamping worktable. The method can deal with the noise disturbance under non-structural welding environment, improves the robustness and the stability of a welding line tracking system, realizes automatic identification of welding line characteristic points, and greatly improvesthe automation degree and the production efficiency.

A method and apparatus using deep pleated filters (1) to provide efficient and safe electrically enhanced filtering (EEF), with ultra low pressure drop, higher efficiency of particulate removal and higher dirt holding capacity over the life of the filter (1). An EEF may be constructed with a housing (24), with or without an internal air moving device such as a fan, a deeply pleated filter (1), preferably a V-pack filter (31) with sets of downstream ground electrodes (4) and charge transfer electrodes (5) borne by the exterior surface of the filter packs (31) that form the filtering element

An electrical connector is provided that includes a dielectric housing having a plurality of slots therein, and a plurality of electrical contacts disposed within at least one of the slots. A plurality of electrical wafers, are each received in one of the plurality of slots. Each wafer has a first edge and a second edge. Some of the plurality of electrical wafers are signal wafers and some of the plurality of wafers are power wafers. Each of the power wafers includes at least one trace and at least one contact pad. The contact pad is sized to mate with a predetermined number of the plurality of contacts to transfer a predetermined amount of current through the trace.

The invention provides a combined type arc-free alternating-current (AC) contactor with the function of thyristor fault diagnosis. The combined type arc-free AC contactor comprises an AC contactor body, parallel shunt branch circuits and a detection control device, wherein the parallel shunt branch circuits are respectively connected to the two ends of each three-phase main contact of the AC contactor body in parallel; the parallel shunt branch circuit of each phase comprises a current detection unit, a bidirectional thyristor, a thyristor self-check relay, a thyristor self-check resistor and an electromagnetic relay; the detection control device comprises a three-phase voltage detection unit, an A-phase voltage zero-crossing detection unit, a three-phase current detection unit, an A-phase current zero-crossing detection unit, a solenoid excitation unit, a thyristor drive unit, an electromagnetic relay drive unit, a current detection unit, a resistance-capacitance buck power supply and a microcontroller. The combined type arc-free AC contactor is used for frequently connecting or disconnecting an AC main circuit, and the generation of electric arcs during each action of the contactor is inhibited through the instant current shunting of power electronic devices, so that the erosion to the main contacts of the contactor caused by the electric arcs is reduced greatly.

The invention discloses a direct-current contact switch breaking protective circuit and an alternating-current contactor equipped with the direct-current contact switch breaking protective circuit. The direct-current contact switch breaking protective circuit comprises a capacitor, a diode, and a discharging path of the capacitor, wherein the discharging path is in a parallel connection with the diode, one end of the capacitor is coupled with a positive electrode end of a direct-current contact switch, the other end of the capacitor is coupled with a positive electrode of the diode, and a negative electrode of the diode is coupled with a negative end of the direct-current contact switch. According to the invention, electric arcs can not be generated at all between contacts when the switch breaks a direct-current high voltage and a high current, the breaking ability and allowable breaking times of the direct-current contact switch are increased, the service life of the direct-current contact switch of the alternating-current contactor equipped with the breaking protective circuit is prolonged significantly.

An improved deposition baffle, that is provided to protect a dielectric window from conductive deposits, is provided in high-density-plasma apparatus. The baffle has a central circular part having slots cut therein that are interrupted by electrically conductive bridges. Ribs in the body between the slots have cooling fluid channel sections bored therein, which are joined in series by interconnecting channel portions in a peripheral annular part of the baffle to form a continuous serpentine cooling fluid flow path from an inlet to an outlet in the annular peripheral part of the baffle.

A rotatable plug includes an upper cover, a lower cover mating with the upper cover, a mount placed in the lower cover, two conductive terminals fixed on the lower cover, a rotatable rack, two connecting members, two first conductive elements and two second conductive elements. The rotatable rack includes a pivot, two seats formed on opposite ends of the pivot and two prongs. Each seat defines a cavity and a leading opening communicating with the cavity. One end of each prong is received and secured on the cavity. The members contact with the corresponding conductive terminals. The first conductive elements are fixed on the other ends of the respective connecting members, and each first conductive element has a first conductive protrusion. One end of each second conductive element is fixed on the prong, and the other end is held in the leading opening and rotatably contacted with the conductive protrusion.

The invention discloses a weather-resistant silver mirror which is particularly suitable for trough solar thermal power generation and a preparation method thereof. The silver mirror orderly consists of a transparent substrate, a first Al2O3 adhesive layer, an Ag reflective layer, a second Al2O3 adhesive protective layer and a SiOx protective layer. The preparation method thereof comprises the step of orderly and respectively plating the first Al2O3 adhesive layer, the Ag reflective layer, the second Al2O3 adhesive protective layer and the SiOx protective layer by adopting a multi-target intermediate frequency response vertical magnetic control sputter to prepare the weather-resistant silver mirror of the invention. The finished product of the weather-resistant silver mirror of the invention has the characteristics of high reflectivity, reliable work, long service life and the like. The preparation method of the invention has the characteristics of advance, reasonability, low cost, low energy consumption, good quality of the finished product and the like.

In an in-liquid plasma film-forming apparatus having: a vessel 1 being capable of accommodating a substrate “S” and a liquid “L” including raw material therein; an electrode 2 for in-liquid plasma, electrode 2 which is disposed in the vessel 1; an electric power device 3 for supplying electricity to the electrode 2 for in-liquid plasma; the electrode 2 for in-liquid plasma is equipped with: a main electrode 21 having a discharging end 22; an auxiliary electrode 26 not only facing the discharging end 22 but also being disposed between the discharging end 22 and the substrate “S” that face each other; and a plasma generating unit 29 having a space that is demarcated by a surface 22a of the discharging end 22 and a surface 26a of the auxiliary electrode 26 facing the surface 22a, and being for generating plasma by means of electricity being supplied to the main electrode 21. And, a decomposed component of the raw material is deposited onto a surface of the substrate “S” by contacting the plasma, which has generated at the plasma generating unit 29, with the substrate “S.”By means of the present construction, it becomes feasible to generate plasma in liquid without ever using a second electrode that serves as a substrate.

Disclosed is a composite contact which comprises a first layer which contains a Cu-Cr mixture and a second layer which contains Cu, wherein, Cr power or particles with mean diameter of 0.1-150 mum and Cu power or particles with mean diameter of 0.1-150 mum are mixed according to the scaling ratio of 15-60145402070f Cr by weight to allowance of Cu to form the first layer.The first layer and the second layer are bonded with each other, at the same time, Cu in the first layer enters a range of 20-100 mum of the second layer from the interface of the first layer and the second layer, and Cu in the second layer enters a range of 20-100 mum of the first layer from the interface.

Provided are a sputtering target material by which generation of arcing can be surely reduced and generation of breakage and cracks is suppressed, and a sputtering target obtained by using the sputtering target material. The substantially board-like sputtering target material has a rectangular sputtering surface, rectangular side surfaces and a rectangular bonding surface. A corner section, which is formed by having at least three surfaces abut to each other among a plurality of surfaces constituting the sputtering target material, is chamfered.

The present invention provides a plasma processing apparatus, capable of restraining an abnormal discharge from generating between a cathode electrode and a netted member for shrouding an exhaust outlet in a parallel flat-plate type plasma processing apparatus. The plasma processing apparatus (2) applies a high frequency electric force between an anode electrode (gas spray head (40) ) and a cathode electrode (carrying bench (3)) facing with each other in a processing container (20) to implement a plasma treatment to the processing gas and implement a plasma treatment to a processed object (S), wherein a conductive member (netted member 51) having an opening is arranged around the cathode electrode to shroud the exhaust outlet for discharging the processing gas, and an electrolyte (52) is arranged between the conductive member and a conductive wall of the processing container (20).

A silver alloy sputtering target having a component composition containing a total of 0.1 to 1.5% by mass of In and / or Sn, which are elements that form a solid solution in Ag, with the remainder being made up by Ag and unavoidable impurities, the average grain diameter of the crystal grains being 1 μm to less than 30 μm, and fluctuations in the grain diameter of the crystal grains being no greater than 30% of the average grain diameter. The silver alloy sputtering target is manufactured by subjecting a melt-cast ingot to a hot rolling step, a cooling step, cold rolling, heat processing, and a machining processing step, in the stated order.

An electrical connector is provided that includes a dielectric housing having a plurality of slots therein, and a plurality of electrical contacts disposed within at least one of the slots. A plurality of electrical wafers, are each received in one of the plurality of slots. Each wafer has a first edge and a second edge. Some of the plurality of electrical wafers are signal wafers and some of the plurality of wafers are power wafers. Each of the power wafers includes at least one trace and at least one contact pad. The contact pad is sized to mate with a predetermined number of the plurality of contacts to transfer a predetermined amount of current through the trace.

One embodiment of the sputtering target having a component composition containing In in the amount of 0.1-1.5 mass%, with the remainder comprising Ag and inevitable impurities, wherein the average particle diameter of the alloy crystal grains is 30mum or more and less than 150mum, and the variation in the particle diameter of the crystal grains is 20% or less of the average particle diameter. One embodiment of the method for producing the sputtering target in which a melt-cast ingot having the component composition is subjected to a hot-rolling step, a cooling step, and a machining step, in this order, wherein: the hot-rolling step involves one or more passes of finish hot rolling under conditions in which the rolling reduction for each pass is 20-50%, the strain rate is 3-15 / sec, and the temperature after the pass is 400-650 DEG C; and the cooling step involves quickly cooling at a cooling rate of 200-1000 DEG C / min.

A novel connector pair suppresses arcing during connection and disconnection. In one general aspect of the invention, first and second insulating barriers are configured to extend beyond corresponding first and second contacts, the barriers being arranged to cover a leading end of at least one of the contacts, and to engage with each other when the contacts are separated by a small gap, thereby closing off substantially all through-air arcing paths between them. In another general aspect of the invention, at least one electrical contact in a connector pair is a bimetal contact having a transitional segment made from high resistivity metal. The transitional segment is configured to make first and last contact during the initial phases of mating and un-mating, thereby increasing electrical resistance and significantly lowering the electrical current and the energy available for electrical arcing.

The invention discloses a novel convenient and practical arc and harmonic elimination and overvoltage protection three-purpose device, and belongs to the field of arc elimination and overvoltage protection. The novel convenient and practical arc and harmonic elimination and overvoltage protection three-purpose device comprises high-voltage current-limiting fuses, a zinc oxide nonlinear resistor, an overvoltage protection controller, a harmonic oscillation capacitor, a harmonic oscillation resistor, a harmonic elimination controller, a voltage transformer, a microcomputer, an arc elimination controller and a linear arc elimination resistor. The high-voltage current-limiting fuses, the zinc oxide nonlinear resistor, the overvoltage protection controller, the harmonic oscillation capacitor, the harmonic oscillation resistor, the harmonic elimination controller, the voltage transformer, the microcomputer, the arc elimination controller and the linear arc elimination resistor are arranged in the novel convenient and practical arc and harmonic elimination and overvoltage protection three-purpose device. The novel convenient and practical arc and harmonic elimination and overvoltage protection three-purpose device is novel in design and convenient to use. The novel convenient and practical arc and harmonic elimination and overvoltage protection three-purpose device is provided with an arc and harmonic elimination system and an overvoltage protection system, so that the arc elimination and overvoltage protection requirements are met.

Disclosed is a CoCrPt-based sputtering target which is reduced in the size and the quantity of a high-chromium particle having a high chromium atom content unevenly distributed in the sputtering target and therefore has increased target homogeneity, which is reduced in the formation of nodule or arcing, and which has a desired chemical composition. The CoCrPt-based sputtering target comprises cobalt, chromium, a ceramic material and platinum, wherein a high-chromium particle which has a high chromium atom content and is unevenly distributed in the sputtering target has a longest diameter of 40 [mu]m or less.

Provided is an indium oxide-zinc oxide-based oxide (IZO) sintered compact target that is characterized in that an oxide that constitutes the target is a composite oxide of In2O3 and ZnkIn2Ok+3 (k=3, 4or 5) and that the relative density of the target is 98.4% or more. The present invention addresses the problem of increasing the density of an IZO sintered compact and reducing the number of fine holes (micropores) remaining between crystal grains so as to improve the quality of a formed film.

Domestic electrical appliance, including a universal electric motor powered by direct current via an electrical circuit linked to a DC electrical voltage source, said circuit including a chopper arrangement, including a capacitor in parallel with the DC voltage source, and one or more solid-state switches, wherein the circuit also includes two controllable switches, for automatically reconfiguring said circuit: a first switch, connected on the one hand, to a first terminal of a motor winding, and on the other hand, alternately to the DC voltage source and to the first terminal of the motor rotor; a second switch, connected on the one hand, to the second terminal of said motor winding, and on the other hand, alternately to one or to the other of the terminals of the motor rotor.

The invention discloses a surge protection device having an arc extinction function implemented by a high performance arc shield. The surge protection device includes the arc shield, a propeller body, an elastic element, a voltage sensing assembly, an electrode pin, a housing and a thermal switch assembly including a thermal-sensitive element. The thermal-sensitive element is in close thermal coupling with the voltage sensing assembly. When constant heating and temperature rise of the voltage sensing assembly is caused because of failure short circuit current due to elements such as instant surge overvoltage and the like in a line, pop-up disengagement of the thermal switch assembly is achieved due to a thermal coup0ling responding action of the thermal-sensitive element. Complete arc extinction is performed by the arc shield and potential fire hazards of an electric device are avoided effectively.

The present invention provides a relay arc extinction circuit and a control device. The relay arc extinction circuit comprises: a relay comprising a magnet exciting coil and a contact switch; a diodeconnected in parallel with the magnet exciting coil and configured to provide a short-circuit channel for high-voltage pulses generated by the magnet exciting coil; and a contact protective circuit connected with the contact switch of the relay and configured to protect the contact switch when the magnet exciting coil generates the high-voltage pulses. The contact protective circuit comprises a protective capacitor connected in parallel with two ends of the contact switch, a protective resistor connected in series with the protective capacitor and a piezoresistor connected in parallel with twoends of the contact switch. The relay arc extinction circuit is simple and reasonable in the structure of the relay arc extinction circuit, effectively achieves arc extinction of relay at a breakingcurrent moment, avoids generation of high-voltage arc discharge when the magnet exciting coil of the relay is interrupted, has a good control effect on arc discharge of the contact of the relay in suction and releasing states, and is high in work reliability.

Disclosed is a PTC (Positive Temperature Coefficient) current limiting device for limiting a current by use of PTC characteristics, which includes a PTC element having the PTC characteristics; a pair of electrode units arranged on both sides to face each other with the PTC element being interposed therebetween; and a molding part prepared around the PTC element and the electrode units to surround at least an interface region between the PTC element and the electrode units, the molding part being made of elastic insulating material. The molding part is made of an elastic insulating material or any insulating materials selected from vacuum, gas and oil. Thus, this device may effectively restrain an arc generated while limiting overcurrent or short circuit current, and also prevent flashover between electrodes.

A lamp is disclosed that includes a light source that requires high voltage for starting. A reflector body includes an electrically conductive reflective surface that is oriented to receive light from the light source and direct the light in the desired direction. A preselected surface portion of the reflector body is devoid of the electrically conductive reflective surface. First and second lead assemblies associated with the light source, and that supply power thereto, pass through openings in the reflector body. The lead assemblies are spaced from the electrically conductive reflective surface portion by the preselected surface portion that is devoid of the reflective material to preclude arcing. Asymmetrical lead wire assemblies may also be advantageously used to increase the electrical standoff.