39results about How to "Guaranteed insulation reliability" patented technology

The invention provides a direct drive permanent magnet wind generator, a direct drive permanent magnet wind generator system and a stator of the direct drive permanent magnet wind generator. The stator comprises a stator support, a stator iron core arranged on the peripheral wall of the stator support, and a paddle side tooth support, wherein the paddle side tooth support is arranged on the paddle side axial end face of the stator iron core, at least one air hole is formed in the peripheral wall of the stator support, and at least one second air hole is formed in the paddle side tooth support. The stator further comprises at least one air flow passageway used for communicating the first air holes with the second air holes, wherein the air flow passageways penetrate through the stator iron core. The micro-positive pressure technology is used in the stator and a rotor of the airborne wind turbine, and therefore a motor can dry itself in a self-adaption mode, external severe air flow is prevented from entering the motor, the service life of permanent magnet poles is prolonged, the insulation level reduction of devices inside the motor is prevented, the risk that the motor is corroded by severe air flow is lowered, and the insulation reliability is improved.

The invention provides a permanent magnet direct-drive wind-powered generator, system and stator thereof. The stator comprises a stator bracket, a stator iron core, a propeller side gear pressing plate and a propeller side enclosing plate; the propeller side gear pressing plate is arranged on the axial end surface of propeller side of the stator iron core; a first air hole is formed in the peripheral wall of the stator bracket; a second air hole is formed in the propeller side gear pressing plate; the stator further comprises an air channel for communicating the first air hole with the second air hole; the air channel passes through the inner part of the stator iron core; a comb teeth air feeding hole is formed in the propeller side enclosing plate and is connected with the second air hole through an air guide tube; a first spiral comb teeth structure is annular in the whole appearance and is communicated with the comb teeth air feeding hole is arranged on the propeller side enclosing plate; first spiral comb teeth are positioned in annular gaps formed by the propeller side enclosing plate and a rotor sealing ring. According to the technical scheme, the rotor has the advantage that the multi-phase airflow sealing can be performed for the annular gap between the propeller side enclosing plate and the rotor sealing ring.

The invention provides an epoxy resin composite insulating material and a preparation method thereof. The epoxy resin composite insulating material is formed by preparing microcapsules, a ruthenium carbene complex catalyst, and a component including at least a bisphenol A type epoxy resin, a first curing agent, a curing accelerator, and a toughening agent. The microcapsules are formed by preparinga urea-formaldehyde resin performed polymer composition and a core material composition in the presence of a second curing agent and a modifier, the urea-formaldehyde resin performed polymer composition is formed by stirring and heating urea, formaldehyde and deionized water under alkaline conditions, and the core material composition is formed by stirring an emulsifier, dicyclopentadiene and deionized water under heating condition. The epoxy resin composite insulating material has the ability to self-repair when damaged.

The invention discloses a high-energy multi-state low-temperature ionizer, comprising an internal electrode and an external electrode, wherein the internal electrode and the external electrode are respectively connected with a power supply. The internal electrode and the external electrode are both tubular structures, and a hollow cavity of the internal electrode is a cooling channel; two ends of the internal electrode and two ends of the external electrode are respectively provided with an electrode support, and the two ends of the internal electrode and the two ends of the external electrode are respectively fixed on the electrode support; the internal electrode is sleeved in the external electrode, and an ionization channel is formed between the external surface of the internal electrode and the internal surface of the external electrode; two ends of the ionization channel are respectively provided with an aerial fog input port and an aerial fog output port, and the aerial fog input port and the aerial fog output port are respectively communicated with the ionization channel. The ionizer provided by the invention is simple in structure and convenient to use, the cooling channel is formed at the center of the internal electrode, when working, the cooling channel can cool the ionization channel so as to generate a large amount of low-temperature plasmas, the cooling effect is better, and the generated plasmas have high energy charge.

The present invention enables many splices to be housed inside a protector provided on the outside of a wire harness. A splice housing part protrudes from a bottom wall into a side space of a main wire harness passage enclosed by the bottom wall and peripheral walls of the body of the protector. The splice housing part is provided with partition walls erected at regular intervals, and a blocking wall on one side of the partition walls. A plurality of splice chambers, which are sandwiched by the partition walls, are provided in a row, and the side facing the blocking wall of each splice chamber serves as an insertion opening. Each splice chamber: is set at a height that enables splices to be housed in at least two vertical tiers; and, among the splices that branch from the wire harness, houses, in a vertically adjacent manner, a splice wrapped with a splice sheet on the outer peripheral surface, and a splice covered with a cap made of an insulating resin.

The invention discloses a traction motor junction box suitable for a high voltage class and a manufacture method of the traction motor junction box. The traction motor junction box comprises a box body, a junction box cover plate, a three-phase outgoing line, a three-phase cable wire and pouring sealant, wherein the junction box cover plate covers the box body, both the three-phase outgoing line and the three-phase cable wire enter the box body from the outside and are connected in the box body, and the pouring sealant is poured inside the box body. A three-phase outgoing line outlet through which the three-phase outgoing line passes, a three-phase cable wire outlet through which the three-phase cable wire passes, and a screwing member used for screwing the three-phase cable wire are arranged on the box body. The manufacture method of the junction box comprises the following steps: casting the box body; connecting the three-phase outgoing line with the three-phase cable wire; insulation-wrapping; and pouring and sealing. The junction box disclosed by the invention brings the convenience for sealing and mass production, and is low in cost, reliable in sealing and insulation, and capable of meeting the requirements of high voltage class and small space size during the operation of a traction motor.

The invention relates to a 66kV burst short circuit transformer. A three-phase three-limb iron core is arranged in a lower fuel-saving box of the transformer. The iron core is sleeved with a low-voltage coil and a high-voltage coil. Wires are led out from the head end of the high-voltage coil and the head end and tail end of the low-voltage coil in the axial direction, and are led into a sleeve through cables. The high-voltage coil is of a fully continuous structure, wherein every two of three composite conductors are wound in parallel in the radial direction. A subsidiary pressing plate on the high voltage side and a subsidiary pressing plate on the low voltage side are respectively of a fan shape as a whole, and the fan-shaped subsidiary pressing plate on the high voltage side and the fan-shaped subsidiary pressing plate on the low voltage side share the same center of a circle and are placed in a symmetric mode. The subsidiary pressing plates and a pressing plate are provided with positioning holes and are connected through an insulating screw rod. According to the 66kV burst short circuit transformer, the insulation structures of the coils are optimized, ampere-turn balance of the coils is improved, horizontal eddy current loss of the coils is lowered on the premise that insulation reliability is guaranteed, the stress level of the coils is lowered substantially at the time of a short circuit, the capability in resistance to the short circuit of a product is enhanced, and a basis is provided for further optimization of a product design.

The invention provides a printing wiring cardinal plate with high insulation reliability and corrosion resistance and method for producing the same, namely the conductor wiring is formed with high etching, when etching is performed by ferric chloride solution or hydrochloric acid solution of copper chloride, residual etching draff with ingredients of the base metal layer between the conductor wirings are few, when high voltage is exerted among the conductor wirings. On at least one surface of the insulating resin film A, a metallic layer B with nickel, or nickel-chromium alloy containing nickel above 70 quality percentage and chromium below 15 quality percentage is stacked in series without an adhesive agent; a metallic layer C made of alloy containing chromium over 15 weight percentage, unnecessary part of a metal membrane composed by copper tunica layer D with thickness 10 nm to 35 Mum, chemical etching processing is adopted for selective removal, and then the printing wiring cardinal plate of conductor wirings is formed.

The invention relates to a novel three-phase-integrated autotransformer switch lead arranging method and belongs to the technical field of transformer manufacturing. The method includes arranging an A-phase single-phase voltage adjusting switch and a B-phase single-phase voltage adjusting switch on the left side of a transformer long shaft facing a high voltage side, and arranging a C-phase single-phase voltage adjusting switch on the right side of the transformer long shaft; connecting A, B and C to tap contacts of respective single-phase voltage adjusting switches; arranging leads, connected with a medium-voltage sleeve, of the respectively single-phase voltage adjusting switches on a medium voltage side to be clamped together with a tap wire. By the method, insulation distance between an out-of-phase switch and the tap wire is guaranteed, and width of an oil tank is correspondingly reduced to meet requirements of transport limit; insulating partitions are arranged between the leads and the oil tank as well as an out-of-phase coil to separate electric fields of the leads, so that unde the premise that insulation reliability of the leads is guaranteed, width dimension of the oil tank is further reduced to adapt to more harsh and strict transport conditions.

Disclosed is a compact gas-insulated switching device with a reduced number of components. A large-diameter part (16) is formed in the central part in the axial direction of a rotary shaft (15) which is driven and rotated by an operating device. An insulated operating rod (14) the other end of which is moved in an arc by the rotation of the rotary shaft (15) is formed by cast molding and encases and is formed integrally with the large-diameter part (16) of the rotary shaft (15) in a filler packed with resin. The contact connection part of the insulated operating rod (14) and a movable element (13) is formed for example on an elliptically shaped contact face (21) to contact at almost one point on the central axial line of the movable element (13) during the switching operation.

The invention discloses a super-high-voltage vacuum insulation device. A vacuum chamber is divided into a first vacuum chamber and a second vacuum chamber; one end of the first vacuum chamber is communicated with one end of the second vacuum chamber; the other end of the first vacuum chamber is provided with a grounding end interface; the other end of the second vacuum chamber is provided with a high-voltage end interface; a grounding wire is connected into the first vacuum chamber; a high-voltage wire is connected into the second vacuum chamber; the first vacuum chamber, the second vacuum chamber, the grounding end interface, the high-voltage end interface and the high-voltage wire are all made of an insulation material; and in the second vacuum chamber, the high-voltage wire is provided with an insulation coating corresponding to the inner wall of the second vacuum chamber. Thus, high voltage can be effectively prevented from generating electric arcs in the insulation device, and the insulation performance and service life of the insulation device can be effectively ensured.

The invention provides a stator, a motor, a compressor and a vehicle, the stator comprises a stator iron core, wherein the stator iron core comprises a plurality of tooth parts, the plurality of tooth parts are distributed along the circumferential direction of the stator iron core, and a stator slot is arranged between two adjacent tooth parts; a winding which is wound on the tooth parts and extends into the stator slots; and a first insulating part, wherein at least part of the first insulating part is located in a gap between the windings on the two adjacent tooth parts, the first insulating part comprises a first insulating part and a second insulating part which are connected, in the same stator groove, the first insulating part is in contact with one winding, the second insulating part is in contact with the other winding, and in a cross section perpendicular to the axis direction of the stator core, the length of the first insulating part is greater than that of the second insulating part. According to the stator provided by the invention, the first insulating part is optimized, that is, the lengths of the first insulating part and the second insulating part are optimized, so that the stator has the characteristics of high insulating reliability, good fixity, easiness in automatic production and low cost.

A conducting particle comprises a center insulation particle, conductive microparicles, a nickel layer, a metal coating layer, first insulation particles and second insulation particles. The center insulation particle is made of an organic insulation material. The conductive microparicles are dispersed in the center insulation particle. The center insulation particle is covered with the nickel layer. The nickel layer is covered with the metal coating layer. The first insulation particles are dispersed in the metal coating layer and cover the nickel layer. The second insulation particles are dispersed in the periphery of the metal coating layer. The conducting particle has good conductivity and insulation reliability, and after the conducting particle is used for a period of time, the insulation resistance of all conducting particles is not reduced, and good conductivity is still kept. The conductivity of the conducting particle is not obviously reduced after a moisture absorption experiment.