204 results about "Slot insulation" patented technology

Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.

Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.

A card edge connector and a card edge assembly that utilizes the individual card end connectors are disclosed. The card edge connectors have slotted insulation displacement terminals to connect to wires. Each electrical connector has a housing with first mounting project extends from a first sidewall of the housing and a mounting recess extends from an oppositely facing second sidewall. The mounting projection is dimensioned to be received in the mounting recess of a second electrical connector, thereby allowing the connectors to be mounted to each other. This type of connector assembly allows the connector assembly to be built according to the needs of the end user. This modular aspect of the connector assembly adds flexibility while reducing the overall cost of manufacture. In addition, the use of the slotted insulation displacement terminals further enhances the flexibility of the connector assembly, as various wiring schemes can be effectively and cost efficiently utilized.

An electric motor has a field assembly, such as a stator, for a dynamoelectric machine has field coils that are wound to a net shape. Lead wires are brought out from the ends of each field coil. The field coils are insulated with insulating sleeves or insulating slot liners. The field coils are assembled with stator core pieces, such as pole pieces and return path pieces, into the stator. The stator core pieces are formed prior to being assembled with the field coils. In an aspect of the invention, the pole pieces and return path pieces are separately formed and then assembled together with the field coils, which have also been separately formed.

The invention relates to a closed ammonia-resistant motor with an ammonia-resistant insulation system. The closed ammonia-resistant motor with the ammonia-resistant insulation system comprises a stator core, a stator winding, slot insulation and a slot wedge, wherein the stator winding is wound inside a stator core slot, the slot insulation is used for insulating and isolating the stator winding, and the slot wedge is used for fixing the stator winding. The stator winding is aluminum conductor electromagnetic wires coated with polyphenylene sulfide; the slot insulation is compound insulation cloth which is alkali-free glass fiber cloth coated with fluoroplastic; and the slot wedge is a lamination of epoxy resin and glass fiber. The closed ammonia-resistant motor with the ammonia-resistant insulation system enable an ammonia-resistant motor to work in an environment full of ammonia refrigerant, the same with a freon-resistant motor; and is a novel motor for a closed ammonia refrigeration compressor.

An insulation sheet for electric machine that forms slot insulation sheet is configured by an aramid paper and a PPS film directly pressure laminated without use of an adhesive. This means that no adhesive layer interposes the aramid paper and PPS film. PPS film is less costly as compared to a polyimide film and possesses better thermal properties such as higher heat emissivity and is highly resistant to heat. Thus, high strength is maintained even when subjected to high temperature over extensive time. Further, because the aramid paper and PPS film are laminated directly without an adhesive layer, the laminate is reduced in thickness. This allows further thinning of the laminate.

The invention is used in AC-powered variable-frequency rare earth permanent magnet synchronous motor with low speed and high torque and frequently started and arrested. It comprises: main insulation, phase insulation, coil end insulation, insulating bush insulation, electromagnetic line insulation, leading-out line insulation, slot wedge, outgoing line board, and impregnating varnish. The main insulation comprises: slot insulation, overhang packing insulation, in-slot inter-layer insulation; the overhang packing, in-slot inter-layer insulation and phase insulation is made out of Mylar Polyaramide fiber paper; the electromagnetic line of stator coil is made out of anti-corona enameled copper wire; dip treating is made for the stator iron core with winding; impregnating varnish uses solvent-free immersion paint made out of polyester resin and unsaturated resin; a vacuum impregnation is used.

Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.

The invention provides a pre-dipping composite material with good flexibility and a preparation method. The pre-dipping composite material is prepared by gluing composite alkali-free glass cloth on two surfaces of a polyimide film, then dipping the polyimide film into a novel resin with good heat resistance, and baking the polyimide film; and the preparation method comprises steps of dipping the composite material into resin solution, drying, naturally cooling and the like. The pre-dipping material has the advantages of good flexibility, long storage period and difficult cracking, and can be used at any angle; and a cured substance has excellent electric property, heat resistance and adhesive property. The pre-dipping composite material can be used for insulation and end sealing insulation among coil layers of F and H-grade dry transformers, and can also be suitable for slot insulation and inter-turn insulation of H-grade motors.

The invention relates to the low voltage power transmission and distribution device field, especially relates to a novel bus duct and an electricity utilization plug. The novel bus duct comprises a metal housing, an insulation base, and a conductive copper bar. The bottom end of the metal housing is inwardly provided with an inserting groove, and the inner side wall is provided with a clamping groove. The insulation base is fixedly disposed in the clamping groove in a clamped manner, and a groove is formed between a pair of insulation arms of the insulation base, and the conductive copper bar is disposed in the groove. The electricity utilization plug comprises an insulation body inserted in the inserting groove, and the side wall of the insulation body is provided with a conductive clamping sheet, which is electrically connected with the conductive copper bar. A laminated busbar, which is electrically connected with the conductive clamping sheet, is disposed in the insulation body. The electricity utilization plug can be screwed in any position of the bottom end of the bus duct for the electricity utilization, and has advantages of simple structure, convenient operation, good self-locking effect, high safety performance, good utilization value, good market prospect, and ability of supporting live-line plugging and unplugging function and plug-and-play function.

The invention relates to a device for the insulation of the stator slots of an electric machine that has a stator having a plurality of stator poles and stator slots located between the stator poles, comprising an insulating body that has moldings adapted to the shape of the stator slots and can be slid onto the stator in an axial direction, and a cover piece that can be connected to an end face of the insulating body, in order after the windings have been applied to the insulating body, to carry the windings (36) at the end face of the stator and to cover them.

The invention provides an insertion device for motor stator slot insulation paper. The device comprises a rack, an unreeling device, a heating device, an indentation device, a preforming device, a first forming device, a paper feeding device, a corner cutting device, a paper inserting device, a cutting-off device, a second forming device, a dividing device, a stator positioning device, and an electric appliance cabinet assembly. Through dividing a one-step forming process of insulation paper into multistage forming, forming internal stress of the insulation paper is released in each forming process, and in repeated heating and forming processes, stability of the formed insulation paper is ensured. The insertion device is driven by a servo motor, length of paper feeding of the insulation paper can be accurately controlled, and when motor stack thickness changes, just a setting value of paper feeding length needs regulating. The device is simple and convenient in operation, reduces length error of insulation paper feeding, and reduces errors of insulation paper length and motor stack thickness and height after the insulation paper is inserted, so as to improve integrated performance of a motor.

The invention relates to the electric machine technology and provides an electric machine stator component. The component comprises a stator core and a stator winding wound on the stator core, wherein the stator core comprises a plurality of stator poles which are distributed along the circumference at intervals and extend along the radial direction and yokes used for connecting all stator poles together, the adjacent two stator poles and a yoke used for connecting the two stator poles constitute an iron core groove; and the stator winding is placed in the iron core grooves, groove insulation parts are lined between the stator core and the stator winding for electric insulation, an opening corresponding to the notch of one iron core groove is formed between the two end parts of each groove insulation part, and a flange is formed on the side with the opening of the end parts of the groove insulation part. The embodiment of the invention can increase the insulation performance between the stator core and the stator winding while the overall dimension of the stator component is not increased.

A device for preventing a motor stator slot wedge from moving comprises a stator core; wherein, a groove is arranged on the stator core and is internally provided with a coil; slot insulation is arranged between the coil and the groove; a wedge is arranged at the opening of the groove; binding wires for preventing the slot wedge from moving are respectively arranged at both ends of the wedge and on vertical parts positioned at both ends of the coil and extending the stator core and form an enclosure. Binding units of the binding wires are more than one groove; binding wires of adjacent binding cross in a stagger way; the end of the slot insulation is provided with a downward turned-over edge as high as the wedge. In the invention, binding wires are added at both ends of the wedge and on the vertical parts at both ends of the coil and extending the stator core, thus preventing the slot wedge from moving, avoiding serious safe accidents such as creepage, ensuring reliable running of the motor and improving the degree of safety. The device is characterized by low manufacturing cost and simple process.

The invention relates to a stator core with a winding for a medium-sized low-voltage variable-frequency motor, which comprises semi-formed windings, semi-open slot stator punched plates, a bottom pad, a slot insulation layer, a middle pad, a regulation pad, a slot wedge and a mounting slot, wherein the semi-formed windings are arranged at the two ends of the mounting slot; the slot insulation layer is arranged in the mounting slot; the bottom pad is placed on the bottom layer of the inner cavity of the slot insulation layer; a lower-layer stator coil formed by the semi-open slot stator punched plates is placed on the bottom pad; the middle pad is placed on the lower-layer stator coil; an upper-layer stator coil formed by the semi-open slot punched plates is placed on the middle pad; the regulation pad is placed on the upper-layer stator coil; the slot wedge is placed on the regulation pad; and the upper-layer and lower-layer coils are connected with the circuit of the semi-formed windings. The stator core improves the power factor and efficiency of the motor, reduces the capacity of the transducer, has high inter-turn insulation performance and improves the dv / dt value of the motor easily, thereby improving the reliability of the medium-sized variable-frequency motor.

The invention relates to a motor insulation system for nuclear power units, comprising an electromagnetic coil wound with a nuclear radiation and high temperature-resistant electromagnetic wire, a slot insulation, a slot wedge, an insulation casing, a binding tape, a lead wire, and nuclear radiation and high temperature-resistant insulation impregnating varnish integrally impregnating for heat conduction. The motor insulation system for nuclear power units of the invention has good high temperature-resistant and nuclear radiation-resistant performances, can be applied to war industry, aviation and aerospace, nuclear power motors and other insulation technical fields, and is particularly suitable to be used as a motor insulation system for nuclear power main pumps with the rated voltage being 1140V and below.

An electrical machine comprises a casing (1), an oil inlet hole (7), an oil passage (2), oil outlet holes (3), a stator retainer (8), a casing end cover (10), a stator iron core (5), winding coils (6), slot insulations (12) and oil-guides (4). The oil passage (2) is located inside the casing (1) and links with the oil inlet hole (7) of the casing (1) and the oil outlet holes (3) of the stator retainer (8). The oil outlet holes (3) are located above the winding coils (6) and the oil-guides (4) are located between the oil outlet holes (3) and the winding coils (6). Oil entering from the oil inlet hole (7) pours onto the winding coils (6) by the guidance of the oil-guides (4) after flowing through the oil passage (2) and flowing out of the oil outlet holes (3). The winding coils of the electrical machine can be effectively cooled and the electrical machine can achieve higher thermal durability. An oil cooling method for the electrical machine is also provided.

The invention offers the method used to reduce wafer damage caused by shallow ridges insulating chemico-mechanical polishing technology. It includes the following steps: offering a wafer includes integrate circuit crystal area, cutting way, and laser number graving area; forming active area photoresist pattern includes trench opening and nominal opening; etching bedding and substrate to form isolating shallow ridge and nominal shallow ridge; depositing trench filler material and filling the isolating and nominal shallow ridges; chemico-mechanical polishing until the bedding.

Systems and methods for reducing or preventing partial discharge between turns of a single coil within an electric motor by placing insulating barriers between different pluralities of wire turns in a single coil. One embodiment comprises an electric motor. The motor includes a rotor and a stator, where the stator has multiple coils of wire that are positioned in passageways in the stator to form electromagnets. Each wire coil has multiple wire turns, and insulating barriers are positioned between different sets of wire turns within the coil. In one embodiment, the stator includes a slot liner in each passageway to electrically isolate all of the wire turns in each coil from the walls of the passageway. The wire coils may be formed with wire that has an insulating coating which is separate from the insulating barriers.

An insulating paper (40) is inserted into a slot (13) of a stator core (10) of a rotary electric machine and insulates between the stator core (10) and a stator coil (20) disposed in the slot (13). An insulating member (40) comprises a sheet-shaped insulating base material (50), and a first adhesive layer (60A) which is provided on a first surface (50a) of the insulating base material (50) and which is formed of an adhesive. The first adhesive layer (60A) is provided with an exposed section (61) which extends in the axial direction of the stator core (10) and in which the insulating base material (50) is exposed from the adhesive.

The invention relates to a large and permanent magnet wind turbine generator scatteredly embedded winding stator insulation mechanism which comprises a slot inside insulation component and an end part insulation component. The slot inside insulation component comprises a slot wedge, a slot insulation, a slot bottom filler strip, a middle insulation and a scatteredly embedded wire winding. The slot wedge is arranged on one end of the scatteredly embedded wire winding. The scatteredly embedded wire winding is composed of an upper winding and a lower winding. The middle insulation is arranged between the upper winding and the lower winding. The slot insulation is arranged on the outer side of the scatteredly embedded wire winding. The slot bottom filler strip is arranged at the lower part of the slot insulation. The end part insulation component comprises end part insulation pieces between phases, end part insulations, lashing ropes, soft end bands and a winding end part sealing piece. The end part insulation pieces between phases are arranged between windings at the end parts of a generator. The end part insulations wrap the outer sides of the windings. The winding end part sealing piece is arranged on the non wire outlet end of the scatteredly embedded wire winding. The soft end bands are lashed on the outer side of an end part insulation through the lashing ropes. Compared with the prior art, the mechanism provided by the invention has the advantages of strong anti halo ability, good insulation performance, less dielectric loss, good dielectric strength performance and the like.

A card edge connector and a card edge assembly that utilizes the individual card end connectors are disclosed. The card edge connectors have slotted insulation displacement terminals to connect to wires. Each electrical connector has a housing with first mounting project extends from a first sidewall of the housing and a mounting recess extends from an oppositely facing second sidewall. The mounting projection is dimensioned to be received in the mounting recess of a second electrical connector, thereby allowing the connectors to be mounted to each other. This type of connector assembly allows the connector assembly to be built according to the needs of the end user. This modular aspect of the connector assembly adds flexibility while reducing the overall cost of manufacture. In addition, the use of the slotted insulation displacement terminals further enhances the flexibility of the connector assembly, as various wiring schemes can be effectively and cost efficiently utilized.

Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The magnet wires in the stator have lead portions that extend The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.

The invention relates to a method for applying an electrical insulation to a ferromagnetic body of a main element of an electrical machine, particularly to a slotted armature body of an armature of a DC motor, said ferromagnetic body being provided with axial slots for accommodating an electrical winding, during which the body is coated with an electrostatically charged plastic powder. In order to improve the cost-efficiency of the method with regard to low initial costs and high maintainability while ensuring a reliable slot insulation, the coating with a large layer thickness is carried out by direct powder spraying onto the grounded body.

The invention discloses a chemical mechanical polishing slurry compound. It comprises: ceric oxide grinding agent; polycarboxylic acids or polycarboxylate with weight average molecular weight being 50,000-500,000; alcohol compound and water. The optimum proportion by weight of components in relative to total slurry compound are: ceric oxide grinding agent 0.1-20%, polycarboxylic acids or polycarboxylate 0.01-20%, alcohol compound 0.001-10%, and the pH of said slurry is 5-10. The CMP slurry compound is processed with STI (shallow slot insulation) method to form multiplayer construction and increase polishing uniformity and inhibit dent and corrosion of chip.

The invention discloses an ammonia-resistant fluoroplastic composite soft material. The ammonia-resistant fluoroplastic composite soft material comprises an electrical alkali-free glass fiber cloth. Fluoroplastic coatings are coated on two surfaces of the electrical alkali-free glass fiber cloth. The ammonia-resistant fluoroplastic composite soft material has good ammonia resistance and certain strength, can be used for a refrigerating fluid-resistant motor and is not damaged so that good slot insulation and phase insulation performances of the refrigerating fluid-resistant motor are guaranteed, and the refrigerating fluid-resistant motor adopting the ammonia-resistant fluoroplastic composite soft material satisfies slot insulation and phase insulation requirements in an ammonia refrigerating environment and works for a long time. Through the ammonia-resistant fluoroplastic composite soft material, the refrigerating fluid-resistant motor can be used in a closed refrigeration compressor system adopting ammonia as a refrigerating fluid.

Electric submersible well pumping systems operable in well temperatures of above about 180° C. (356° F.) utilize high temperature electrical insulation. The electrical insulation includes E-base polyimide films or perfluoropolymer TE films on various components. The insulation films are employed around magnet wires that are threaded through slots in the stator. Slot insulation of E-base polyimide or perfluoropolymer TE film surrounds the magnet wires in the stator slots. Sheets of E-base polyimide or perfluoropolymer TE film extend around and between phase loops of the magnet wire at the lower end of the stator. The motor contains a PAO oil having additives to dissipate acid generated by epoxy used in the motor.

An electric machine includes a stator having a stator core, rotor core and / or magnetic core comprising a plurality of slots. Each of the plurality of slots includes a spacer, a conductor, and encapsulated slot insulation. The spacer is configured to suspend the conductor away from the stator core by a dielectric distance without occupying all of the space between the conductor and the stator core. The encapsulated slot insulation includes an encapsulation material configured to flow in a liquid state around the perimeter of the conductor filling in the space between the conductor and the stator core. The encapsulation material cures to hold the spacer and the conductor in place. The encapsulated material typically has higher thermal conductivity properties than a conventional slot liner, increasing the performance of the motor.

An electrical machine including a casing (1), an oil inlet hole (7), an oil passage (2), oil outlet holes (3), a stator retainer (8), a casing end cover (10), a stator iron core (5), winding coils (6), slot insulations (12) and oil-guides (4). The oil passage (2) is located inside the casing (1) and links with the oil inlet hole (7) of the casing (1) and the oil outlet holes (3) of the stator retainer (8). The oil outlet holes (3) are located above the winding coils (6) and the oil-guides (4) are located between the oil outlet holes (3) and the winding coils (6). Oil entering from the oil inlet hole (7) pours onto the winding coils (6) by the guidance of the oil-guides (4) after flowing through the oil passage (2) and flowing out of the oil outlet holes (3). The winding coils of the electrical machine can be effectively cooled and the electrical machine can achieve higher thermal durability. An oil cooling method for the electrical machine is also provided.