37results about How to "Reduce tip discharge" patented technology

The invention relates to an anti-vibration hammer for high-voltage power transmission lines, in particular for power transmission and distribution lines in power industry, comprising a wire clip, two hammer bodies, a steel stranded wire and at least one pre-stranded wire, wherein the wire clip is fixedly connected with the steel stranded wire and is in the form of a sea horse-shaped structure; the two hammer bodies are in the form of a dumbbell-shaped structure and are symmetrically, obliquely and fixedly arranged on both ends of the steel stranded wire; and the connecting positions of the steel stranded wire and the hammer bodies are arranged on the side surfaces of hammer head at the fixed ends of the hammer bodies. Because partitioning nails are arranged on the wire clip and the pre-stranded wires are respectively arranged on the wire clip at intervals, the anti-vibration hammer and a power transmission cable are effectively connected; because the two hammer bodies are symmetrically and obliquely fixed on both ends of the steel stranded wire, the anti-vibration hammer absorbs different-frequency vibration to prolong the surface life of the lines; because the hammer bodies are designed into a dumbbell shape and windward surfaces are arranged on the hammer heads at the cantilever ends, the anti-vibration hammer has better vibration reduction effect, improves corona voltage and reduces marginal discharge; and because the circular-arc smoothing treatment is carried out on the surfaces of the hammer bodies, the anti-vibration hammer improves the integral performance and reduces pollution flashover.

The invention relates to a vertical current transformer, comprising an expander, a primary conducting bar, an insulating medium, an oil tank shell, an earth stud, a secondary winding, an oil relieve valve, and the like; the oil tank shell is thereon fixedly provided with an oil tank upper cover in a sealing way, the primary conducting bar is arranged on an oil conservator and is connected with the secondary winding by a conducting rod, the oil tank shell is thereon provided with the oil relieve valve and is connected with the earth stud, a sealing cavity formed by the oil conservator, a sleeve and the oil tank shell is internally provided with the insulating medium, and the shape of an inner cavity of the oil tank shell is designed to be similar to the shape of the secondary winding; the oil tank shell is designed to be a one time tensile shape which is similar to the shape of a primary winding and the secondary winding, so that the electric field is uniformly distributed; an earth wire is arranged at the lower end of the oil tank shell, so that the length of the earth wire bank is reduced; the secondary winding and the oil tank shell are arranged below the whole, so that the centre of gravity is downward and the stability is improved; as the insulating medium is added with a solid filler, the insulating property is improved.

The invention discloses a touch control panel comprising a base plate, a first ground lead and a second ground lead. The base plate is provided with a touch control area and a peripheral area surrounding the touch control area; the two ground leads are both arranged on the peripheral area and connected in a non-electrical way; and a distance between the two ground leads is smaller than a first threshold value.

The invention relates to a combined electronic mutual inductor. The combined mutual inductor comprises a shell, primary conductive rods, current coil shielding cylinders, current coils, shielding cylinders, intermediate electrodes, grounding electrodes, an upper pan-type insulator and a lower pan-type insulator, wherein the upper half shell of the shell is fixedly provided with upper positioning flanges; the primary conductive rods are connected with a conductive body of the upper pan-type insulator; the upper positioning flanges are fixedly provided with the current coil shielding cylinders; the current coils are arranged at the periphery of the current coil shielding cylinders; the shielding cylinders are arranged at the periphery of the primary conductive rods; and one end of each shielding cylinder is connected with the primary conductive rods, and the other end of the shielding cylinder is separated from the primary conductive rods. A current mutual inductor and a voltage mutual inductor are combined into a whole, so that the whole combined electronic mutual inductor has a compact structure and a small volume. The shielding cylinders, the intermediate electrodes, the grounding electrodes and the shell are made of aluminum alloy materials with low expansion coefficients, air vents are formed on the shielding cylinders, and all ports are designed into arc-shaped forms, so that point discharge is reduced, and internal electric fields are uniform.

The invention discloses an insulating tube bus-bar connecting device and a connecting method thereof. The connecting device comprises two insulating tube bus-bars and a tube bus-bar connector which is a tubular connector, the inner diameter of the tube bus-bar connector is small than the outer diameter of an insulating tube bus-bar core material, and the outer diameter of the tube bus-bar connector is larger than the outer diameter of the insulating tube bus-bar core material. The connecting method comprises the steps that 1, the connection parts of the two ends of the insulating tube bus-bars and the inner surface and outer surface of the tube bus-bar connector are polished clean and subjected to tinning treatment; 2, the tube bus-bar connector is subjected to heating and heat preservation treatment at certain temperature, and heating and heat preservation treatment are stopped when the inner diameter of the tube bus-bar connector is expanded to be larger than the outer diameter of the tube bus-bars under the action of heating and heat preservation treatment; 3, the middle of the tube bus-bar connector is fixedly clamped through a tool clamp, the connection parts of the insulating tube bus-bar ends are inserted into the tube bus-bar connector; 4, the joints of the tube bus-bar connector and the insulating tube bus-bar ends are cooled; 5, insulating treatment is conducted on the tube bus-bar connector and the joints of the tube bus-bar connector and the insulating tube bus-bar ends after cooling is conducted.

The invention relates to a double-split transmission conductor four-wheel drive spacer overhaul robot and an operation method thereof. The double-split transmission conductor four-wheel drive spacer overhaul robot comprises a case, a body, a moving arm and operation arms. The operation arms can stretch out, draw back, rotate, transversely move and longitudinally move. A clamping mechanism is arranged at the tail end of a first operation arm. The clamping mechanism is used for clamping a spacer connecting rod. A bolt fastening mechanism is arranged at the tail end of a second operating arm. Thebolt fastening mechanism is used for fastening and loosening a spacer bolt. Through the coordinated movement of all joints, the robot can realize the live-line spacer replacement operation on a high-voltage power transmission line.

The invention relates to an operation device and method for replacing a transmission line vibration protection hammer. The operation device comprises a case, a machine body, a moving arm and operationarms, wherein the operation arms can longitudinally move, stretch and rotate, the tail end of the operation arm I is equipped with a clamping mechanism and a supporting mechanism which are used for fixing a vibration protection hammer wire clamp, and the tail end of the operation arm II is equipped with a bolt fastening mechanism and a pitch joint which are used for fastening and loosening vibration protection hammer bolts. Through the coordination of joints, the device can realize live replacement of the vibration protection hammer on a high-voltage transmission line.

The invention relates to a combined three-phase common-body electronic current and voltage transformer. The transformer is composed of a shell, a primary conducting rod, a current coil shielding cylinder, a current coil, a shielding cylinder, a grounding electrode, a basin-type insulator, an explosion-proof sheet and the like. An upper positioning flange is fixedly installed on an upper half partof the shell. The primary conducting rod is connected with a conductor of the basin-type insulator. A current coil shielding cylinder is fixedly arranged on a lower positioning flange. A current coilis arranged at a periphery of the current coil shielding cylinder. The shielding cylinder is arranged at the periphery of the primary conducting rod, one end of the shielding cylinder is connected with the primary conducting rod, and the other end is insulated from the primary conducting rod. Because a current transformer and a voltage transformer are combined into one body, a whole machine is compact in structure and small in size; because the shell, the shielding cylinder, the primary conducting rod and the electrode are made of aluminum alloy with a low expansion coefficient, and each portis designed to be arc-shaped, point discharge is reduced, and an internal electric field is uniform.

The invention relates to a dividing type electronic voltage transformer of a three-phase capacitor, comprising a shell, three groups of electrode devices, a base, a bracket, an explosion-proof device, a connection cable, a disk type insulator and a lead wire device, wherein the three groups of the electrode devices are arranged on the base; the shell connected with the base is arranged on the periphery of the three groups of the electrode devices; the disk type insulator is arranged on the shell; and the connection cable is arranged on the disc type insulator and respectively connected with a high-voltage electrode of the three groups of the electrode devices. As the three groups of electrode devices are respectively arranged in the shell, the structure is compact; as an arc structure is designed on the upper opening of the shell, an electric field is uniformly distributed and the outer surface has excellent self-cleaning property; the high-voltage electrode, an intermediate-voltage electrode and a grounding electrode are made of an aluminum alloy with a low expansion coefficient, and therefore, a volume becomes small and properties are stable when a temperature is changed; and ports of the high-voltage electrode, the intermediate-voltage electrode and the grounding electrode are designed in an arc transition shape, so that marginal discharge is reduced; and the connection cable is designed in a stretchable manner to reduce device damages.

The invention discloses a disk-shaped non-excitation tap switch. The disk-shaped non-excitation tap switch comprises a switch base and a rotary shaft which is arranged on the switch base in a penetration manner, wherein the upper end of the rotary shaft is connected with an operating and positioning apparatus while a moving contact is arranged at lower end of the rotary shaft; static contacts are distributed, corresponding to the circumferential direction of the moving contact, on the switch base at intervals; the non-excitation tap switch is characterized in that each static contact comprises a static contact body and a terminal connected with the corresponding static contact body; the static contact bodies are matched with the moving contact; and the terminals extend out of the switch base and jointly turn to the direction of the branching line from the transformer coil along the circumferential direction of the switch base while the terminals are bent downwardly. The terminals of the static contacts are bent downwards and all face to the lead outlet direction of the transformer, so that the bending radius of the leads can be reduced, the occupied spaces of the tap switch and the lead part in the internal of the transformer can be reduced, the leads can be arranged more attractively, and the usage amount of the leads can be reduced.

The invention discloses a static contact structure of a disk-shaped non-excitation tap switch. The static contact structure comprises a switch base and a rotary shaft which is arranged on the switch base in a penetration manner, wherein the upper end of the rotary shaft is connected with an operating and positioning apparatus while a radially and elastically rolled moving contact is mounted at the lower end of the rotary shaft; static contacts are distributed, corresponding to the circumferential direction of the radially and elastically rolled moving contact, on the switch base at intervals; each static contact comprises a columnar static contact body and a cylindrical terminal connected with the corresponding static contact body; the static contact bodies are matched with the radially and elastically rolled moving contact; the upper ends of the static contact bodies are bent downwards to form the terminals; and the terminals extend out of the switch base. According to the static contact structure provided by the invention, the terminals are bent downwards, so that the axial length of the whole static contacts along the direction of the switch base can be the minimum, and the height of the switch is lowered; and in addition, an annular electrode is arranged over the ground, so that the electric field is uniform, and the insulating performance of the static contact structure is improved.

The invention relates to a dividing type electronic voltage transformer of a single-phase capacitor, which is used in an electric industry. The voltage transformer consists of a shell, a base, a bracket, an intermediate electrode, an insulating support, a high-voltage electrode, a terminal box, a disk type insulator, an explosion-proof device, an upper screening ring, a lower screening ring and a grounding electrode, wherein the shell is fixedly mounted on the base; the insulating support is fixedly mounted on the base; the grounding electrode is fixedly mounted on the insulating support; the disk type insulator is fixedly arranged on the shell; the high-voltage electrode is connected with the disk type insulator and arranged in an inner cavity of the intermediate electrode; and the intermediate electrode, the upper screening ring and the lower screening ring are fixedly mounted on the grounding electrode respectively. As the intermediate electrode, the upper screening ring, the lower screening ring and the shell are made of an aluminum alloy with a low expansion coefficient, the fluctuation of data detection caused by material expansion is reduced; and furthermore, the high-voltage electrode is designed in an arc and cylindrical structure and ports of the intermediate electrode, the upper screening ring and the lower screening ring are designed in an arc transition shape, so that the marginal discharge is reduced.

The invention relates to an aluminum electrolysis capacitor which comprises an anode foil with a barbed and riveted anode guide pin and a cathode foil with a barbed and riveted cathode guide pin. Theanode foil and the cathode foil are laid in electrolytic paper between the two foils; and a section of liner aluminum foil is barbed and riveted at the barbed riveted cathode guide pin of the cathodefoil and the barbed riveted anode guide pin of the anode foil of the aluminum electrolysis capacitor before coiled. The invention improves the capability of bearing a ripple current by approximate 50percent and prolongs the service life by approximate 30 percent.

The invention discloses an isolation switch. The isolation switch comprises a static contact seat and an isolation switch body, wherein the static contact seat and the isolation switch body are arranged in a split way, and the isolation switch is flexible to assemble and is free from limitation of application equipment. The static contact seat is arranged in switch equipment, the isolation switchbody is arranged at a lower part of the static contact seat, the static contact seat comprises a T-type structure static contact piece and a support insulator, an upper side of the static contact piece is fixed on the support insulator, a lower side of the static contact piece is disconnected or connected with the isolation switch body, and the isolation switch body comprises a static contact piece assembly, a conductor, an insulation support and a support framework. The structure is simplified by the movable contact piece assembly, a traditional penetrating bolt fastening piece is eliminated,an upper group of pull spring and a lower group of pull spring are arranged, the charged body range is reduced, the insulation distance is shortened, the point discharging is reduced, the safety andthe reliability are improved, the assembly process is simplified, the contact pressure can be directly achieved by the upper group of pull spring and the lower group of pull spring, and the debuggingprocess is simplified.

The invention relates to a three-phase test device for testing performance of a gas insulated and metal enclosed switchgear (GIS) combined electrical apparatus in power industry. The device consists of a primary wiring device, a flange component, a gas-charging connector, a cylinder body, a support, a transmission device, an insulation rod, a rotation hand wheel, a switching device and a transition flange. The cylinder body is provided with the flange component which is provided with the primary wiring device; the transmission device is arranged on the support and connected with a conducting rod in the primary wiring device; a transmission shaft in the transmission device is connected with the insulation rod; the transmission device is provided with the switching device; and the lower part of the cylinder body is provided with the transition flange. The cylinder body is designed to be of a metal structure, and the outer side of the cylinder body is connected with the ground so that the three-phase test device has a compact structure; a contact electrode in the switching device can move along an electrode fixing seat up and down so that the three-phase test device can adapt to testing products of different models; and each test process is continuous, and a phase is convenient to change so that great convenience is brought to detection of the products.

The invention discloses an anti-burnout high-current pin, which comprises a male housing, a male pin, a female housing and a female slot. The outer surface of the male pin is cylindrical, and the front end is spherical; the outer surface of the female socket is cylindrical, the interior is hollow, and the front end is spherical. The smooth spherical or cylindrical connection structure greatly reduces the tip discharge, makes the local electric field intensity the lowest, and can effectively prevent the pin from burning out.

The dry etching device with plasma comprises a vacuum cavity with an upper and a lower electrode plate, a vacuum discharging zone for plasma between the two plates, a power source electric connected to the said plates to provide the require potential difference; and a gas output to connect with vacuum cavity and system and maintain plasma state, and it has a resin layer to avoid the etching effect; wherein, there is at least one gas inlet on upper plate to transmit gas.

The invention discloses a fixed contact structure for a non-excitation tap switch. The fixed contact structure comprises a disc-shaped or strip-shaped switch body; at least one phase of fixed contacts is arranged on the switch body; each phase of fixed contacts comprises multiple first fixed contacts and a second fixed contact; the contact ends of various fixed contacts stretch into the cavity of the switch body and are configured with movable contacts; the wiring ends extend out of the switch body; the wiring ends of various fixed contacts are each provided with a lead hole; the aperture of the lead hole of the second fixed contact is greater than that of the lead holes of the first fixed contacts; the lead holes of the first fixed contacts are used for connecting the lead of this phase of coil; and the lead hole of the second fixed contact is used for sleeving the lead of this phase of coil and this phase of output lead. The aperture of the lead hole of the second fixed contact is greater than that of the leads holes of the first fixed contacts; two leads are connected and in cold press joint; another welding or press joint process is unnecessary; and thus, the processing technique becomes simple.

The invention discloses a fixed contact structure of a disc high-current off-circuit tap-changer. The fixed contact structure comprises a switch base and a rotating shaft, wherein the rotating shaft is arranged on the switch base in a penetrating manner; the upper end of the rotating shaft is connected with an operation positioning device; radial elastic rolling moving contacts are arranged at the lower end of the rotating shaft; fixed contacts are arranged on the switch base corresponding to the radial elastic rolling moving contacts at intervals in a circumferential manner; the fixed contact structure is characterized in that each fixed contact comprises a columnar fixed contact body; each columnar fixed contact body and the corresponding radial elastic rolling moving contact are arranged in a matched manner; the upper end of each fixed contact body is folded back downwards to form a connection terminal; and each connection terminal extends out of the switch base and is a flat form. Each flat connection terminal disclosed by the invention is connected with a transformer lead terminal through a bolt, so that the structure is simple; the connection is reliable; the switch diameter dimension is small; the manufacturing cost is low; the ground electric field is uniform; and the flat connection terminals are suitable for the fixed contact structure of a high-current disc or bar off-circuit tap-changer.

The invention provides a transistor and a forming method thereof. The forming method comprises: a base including a substrate, a stress constraint layer and a channel layer are provided, wherein the stress constraint layer and the channel layer are arranged on the surface of the substrate successively; a gate structure is formed on the base; the channel layer at the two sides of the gate structure are removed and grooves are formed in the sidewall of the remaining channel layer; the stress constraint layer at the two sides of the gate structure is removed and the base at the two sides is removed with a certain thickness to form a first opening; and the first opening is filled to form a stress layer. Because the stress constraint layer is arranged in the base, the stress layer arranged at the two sides of the gate in the base has a part having a protrusion in the channel layer and a part in the stress constraint layer and the substrate. The protrusion of the stress layer in the channel layer enables stresses to be led into a channel in the channel layer; the stress layer in the stress constraint layer and the substrate enables the size of the stress layer to be increased, so that the stress of the channel region can be increased. Therefore, the migration rate of carriers in the channel can be improved, so that the transistor performance can be improved.

The invention discloses an integrated multi-stage high-voltage pulse isolation inductor. The integrated multi-stage high-voltage pulse isolation inductor comprises a plurality of insulating connecting sections connected in sequence, a copper ring electrode is clamped between every two adjacent insulating connecting sections, each copper ring electrode is coaxially sleeved with a tubular voltage-sharing electrode, and each voltage-sharing electrode and the corresponding copper ring electrode are connected into a whole through bolts. The integrated multi-stage high-voltage pulse isolation inductor further comprises a wire, and the wire is evenly and spirally wound on the outer surface of the insulating connecting sections connected into a whole and is connected with each copper ring electrode in a pressing mode through bolts. The integrated multi-stage high-voltage pulse isolation inductor is higher in voltage resistance strength, small in contact resistance and compact in structure.

The invention discloses a fixed contact structure of a disc high-current off-circuit tap-changer. The fixed contact structure comprises a switch base and a rotating shaft, wherein the rotating shaft is arranged on the switch base in a penetrating manner; the upper end of the rotating shaft is connected with an operation positioning device; radial elastic rolling moving contacts are arranged at the lower end of the rotating shaft; fixed contacts are arranged on the switch base corresponding to the radial elastic rolling moving contacts at intervals in a circumferential manner; the fixed contact structure is characterized in that each fixed contact comprises a columnar fixed contact body; each columnar fixed contact body and the corresponding radial elastic rolling moving contact are arranged in a matched manner; the upper end of each fixed contact body is folded back downwards to form a connection terminal; and each connection terminal extends out of the switch base and is a flat form. Each flat connection terminal disclosed by the invention is connected with a transformer lead terminal through a bolt, so that the structure is simple; the connection is reliable; the switch diameter dimension is small; the manufacturing cost is low; the ground electric field is uniform; and the flat connection terminals are suitable for the fixed contact structure of a high-current disc or bar off-circuit tap-changer.