106results about How to "Guaranteed insulation distance" patented technology

Each of a first phase, a second phase, and a third phase of a 3-phase winding has a plurality of troidal coils and crossover lines connecting the coils. The crossover line of the first phase passes inside the second-phase and the third-phase coil. The crossover line of the second phase is guided by a guide post and passes above the first-phase coil and passes inside the third-phase coil. The crossover line of the third phase is guided by a guide post and passes above the first-phase and the second-phase coil.

The invention discloses a small-capacity epoxy resin poured dry type transformer, belonging to the technical field of dry type transformers. The small-capacity epoxy resin poured dry type transformer comprises an iron core, a low-voltage coil, a high-voltage coil, an upper clamp piece, a lower clamp piece, an upper cushion block, a lower cushion block and a pull screw rod, wherein a ventilation air duct is arranged between the low-voltage coil and the high-voltage coil, the upper and lower cushion blocks are arranged on the upper and lower ends of the ventilation air duct, the upper cushion block is provided with the upper clamp piece, the lower cushion block is provided with the lower clamp piece, the pull screw rod is connected between the upper clamp piece and the lower clamp piece, a lead-out wire of the low-voltage coil is connected onto a low-voltage lead insulator, a starting lead of the high-voltage coil is connected to a start terminal, a tapping lead of the high-voltage coil is connected to a tapping terminal, and a tail lead of the high-voltage coil is connected onto a tail terminal. The small-capacity epoxy resin poured dry type transformer has the characteristics that a plurality of tapping joints of the tapping terminal are arranged in a equilateral polygon shape, and resin partitions are respectively arranged between the tapping terminal and the starting terminal and between the tapping terminal and the tail terminal. The small-capacity epoxy resin poured dry type transformer has the advantages of improving the safety use performance, prolonging the insulation distance among all tapping points, and improving the electric insulation strength, and is small in size and compact and reasonable in structure.

The invention discloses a sub-frame iron core structure for disassembling and transporting a transformer and a transportation method; the sub-frame iron core structure comprises an integral lower clamping piece, a U-shaped clamping piece and the like; when a product is disassembled and transported, the upper yoke and the upper clamping piece of an iron core as well as the overall lower clamping piece are disassembled from the iron core and are transported solely; the U-shaped inner clamping piece, the disassembled iron core units and a lower yoke are fixed by a bandage and transported as the integral sub-frame iron core; after the parts are transported to the site, the U-shaped inner clamping piece and the integral lower clamping piece are connected through a positioning device to form a combined lower clamping piece structure, so that the integral lower clamping piece and all sub-frame iron cores are installed fixedly, and finally the integral iron core is formed and the installation of the iron core and an oil tank is realized. According to the sub-frame iron core structure for disassembling and transporting the transformer and the transportation method, an oval iron core and dislocation phenomenon in the prior art are prevented when all the sub-frame iron cores are assembled on the oil tank.

The invention relates to a switching device and a spring operation mechanism thereof. The spring operation mechanism comprises an installation frame, wherein the installation frame is provided with an output shaft; the output shaft is provided with a closing position and an opening position; a driven connecting lever is fixedly arranged on the output shaft; the output shaft is rotationally sleeved with a driving connecting lever; the driving connecting lever has a release travel in a rotation travel; the output shaft is provided with a stop structure; the installation frame is rotationally provided with a retainer; the retainer is provided with a stop part; the stop part is used for being in stop fit with the stop structure to stop and position the output shaft at the corresponding closing position or opening position before the driving connecting lever strikes the driven connecting lever; the retainer is provided with a locking position for making the stop part and the stop structure in stop fit in the rotation travel; the retainer is also provided with an unlocking part; the unlocking part is struck by the driving connecting lever on the corresponding release travel to compel a retaining bar to rotate away from the locking position. The output shaft is prevented from rotating before the driving connecting lever strikes the driven connecting lever by using stopping and positioning of the retainer on the output shaft, and the safety performance of the switching device is improved.

The invention discloses a production method for windings of an amorphous alloy transformer, which comprises the following steps: making a low-voltage winding: fixing start leads in rows with an assistant tool and locking inside a rabbet of an insulating cylinder, winding the start leads without tension, and removing the assistant tool after the start lead winding is completed and regulating the size; making the low-voltage winding under tension: winding while knocking the surface of a copper foil, compressing the low-voltage winding to the specified size after the low-voltage die is removed, drying and painting; winding a high-voltage winding on the low-voltage winding to obtain an amorphous alloy transformer winding. Based on the combination of low-voltage and high-voltage windings, the invention can eliminate the influence of positive deviation of the low-voltage winding and ensure the insulation distance between the low-voltage and high-voltage windings.

The invention provides a transformer which includes a bobbin, a primary coil, a secondary coil, an E-type core, a plurality of pin terminals, and an insulation member. The bobbin has a winding portion where the primary coil and the secondary coil are wound, a flange portion formed at the end of the rear side of the winding portion, and a flange portion formed at the end of the front of the winding portion. An insulating protrusion having an insulating concave is arranged at the lower side of the flange portion formed at the end of the front of the winding portion. The insulation member is mounted on a heat-radiation protrusion and the E-type core so that an insulating convex is engaged with the insulating concave. The pull-out line of the secondary coil is guided above the surface of the insulation member and connected to the pin terminal.

The invention discloses a GTO (gate-turn-off thyristor) water-cooling inversion power module, belonging to the technical field of high-power semiconductor switches. The overall dimension of the module is 490*953*777 (unit: mm). The module comprises a metal aluminum alloy left support frame, a power string, a metal aluminum alloy right support frame, a cake-shaped water-cooling reactor, a connection copper bus, an N-phase output copper bus, a water-cooling resistor, a water-cooling resistor mounting plate, an M-phase output copper bus, an AC (alternating current) input copper bus, a copper bus insulating bracket, a 15[mu]f capacitor, a P-phase output copper bus, 2.5[mu]f capacitor, a pulse trigger plate, a water inlet main pipe, a water outlet main pipe and a capillary water pipe. The metal aluminum alloy left support frame and the metal aluminum alloy right support frame define a support main body in the invention, and are processed from aluminum alloy serving as a raw material by a mould casting method. The power string is mounted on the rear upper layer of the structure of the GTO water-cooling inversion power module, and the lower layer of the power string is provided with the water inlet main pipe and the water outlet main pipe. The pulse trigger plate is arranged behind the power string.

The invention relates to a miniaturized ground switch used in a high-voltage switch gear, which comprises three phase supporting insulators, three phase fixed contacts and three phase moving contact knives, wherein the three phase supporting insulators are installed on a framework, the three phase fixed contacts are installed on the supporting insulators, and the three phase moving contact knivesare matched with the fixed contacts; the bottoms of the three-phase supporting insulators are linearly arranged and installed on the framework, wherein the integral height of one phase supporting insulator in the middle is larger than the height of the two supporting insulators at both sides, so that the centers of the three phase fixed contacts installed at the tops of the three phase supportinginsulators are distributed on the three angles of an isosceles triangle; and the length of one phase moving contact knife in the middle of the three phase moving contact knives is larger than the length of the contact knives at both sides, so that the three phase moving contact knives can correspond to the positions of the three phase fixed contacts. The invention can shorten the size of a groundswitch in a width direction and decrease the installation area of the ground switch while ensuring interphase insulation distances, thereby being suitable for being installed in miniaturized high-voltage switch gears.

The invention discloses an electromagnetic relay, and the electromagnetic relay comprises a magnetic circuit system, a contact system, a push card, a substrate, and a housing. The electromagnetic relay is characterized in that the electromagnetic relay also comprises a normally-opened auxiliary contact system; the normally-opened auxiliary contact system comprises an auxiliary lower contact, an auxiliary lower elastic piece, an auxiliary upper contact, and an armature elastic piece; and a moving elastic piece positioning terminal is provided with a small convex hull at one side of a moving contact piece; An elastic force of an elastic piece of the auxiliary contact system is used for increasing a force during the disconnection of the contact system, and the moving elastic piece positioning terminal is provided with the small convex hull at one side of the moving contact piece, wherein the small convex hull can enable the moving elastic piece to generate elastic deformation after the moving elastic piece is riveted to the moving elastic piece positioning terminal. In other words, a pre-pressure is applied to the elastic piece positioning terminal, and the contact pressure is enabled to quickly increase to the pre-pressure during suction when the contact just makes contact; similarly, the contact pressure will quickly decrease to zero from the pre-pressure when the contact is about to be cut off, thereby reducing the ablation time when the contact resistance approaches to zero, and releasing the bounce.

The present invention provides a turn signal control device for a vehicle, which has an automatic cancellation function and does not require a switch and an electric circuit for manual cancellation, thereby improving reliability. The switch operation member (20) can be pushed in and reset between the reset position and the push-in position corresponding to the push-in operation performed from the reset position. In the reset position, the switch operation member (20) can be in the neutral position Swing between the left-turn display position and right-turn display position; the switch operating member (20) is supported by the pivot (22) arranged on the fixed switch box (18), and is elastically loaded toward the neutral position and the reset position The direction indicator switch (24) is linked and connected with the switch operation part (20), so that according to the push-in movement of the switch operation part (20) to the push-in position, the connection between the left-turn display device or the right-turn display device and the flashing unit is cut off. connect.

The invention relates to a voltage-regulating winding end part insulating structure for controlling creepage for a transformer, and belongs to the technical field of a transformer manufacturing process. According to a technical scheme, a voltage-regulating winding adopts a dual-layer cylinder type structure; a multilayer thick paper tube-supporting strip structure (1) is arranged at the upper end of the voltage-regulating winding (3); and a multilayer positive and negative angle ring mutual-enfolding structure (2) is arranged between a static ring (4) of the voltage-regulating winding (3) and the thick paper tube-supporting strip structure (1), so that an effect of optimizing creepage field strength on two directions is achieved. The voltage-regulating winding end part insulating structure has the beneficial effects as follows: the end part edge of the multilayer thick paper tube-supporting strip structure is arranged at the upper end of the voltage-regulating winding of an ultra-high-voltage converter transformer, so that a creepage path on the surface of an oil tank on a high-potential region at grid side winding end part can be controlled; and therefore, the insulation level of the ultra-high-voltage converter transformer is effectively lowered, and the safety operation of the converter transformer is ensured.

Disclosed are a double-wall insulation silo with stiffening ribs and a production method thereof. Yearly food stocks of farmers in China is about half of yearly total food yield of China; about 8% of the food stocks of farmers is lost due to poor storage conditions, facility simplicity and lack of technical guidance services; the loss caused by insects, moulds, rats and birds is more than 40 billion jin each year. The farmers are in urgent need of building agricultural granaries. The double-wall insulation silo with stiffening ribs comprises a roof (1) and a body (2) connected with the roof. The body comprises an inner wall (3) and an outer wall (4). The inner wall is provided with stiffening ribs (5). An insulation layer (6) is disposed between the inner wall and the outer wall. The double-wall insulation silo with stiffening ribs is used as a grain storage bin for farmers.

The invention relates to a connector, which can solve the problems of poor tolerance capability and unreliable connection of a connector in the prior art. The connector comprises a shell and a pair ofconducting strips. One end of each conducting strip is a fixed wiring end, the other ends of the conducting strips are oppositely arranged to form an insertion clamping opening, and an insulator is limited between the two paired conducting strips and is fixed relative to the two conducting strips in the insertion direction. The connector further comprises a limiting force transmission clamp whichis a U-shaped clamp. The conductive assembly is located in the limiting force transmission clamp, and the direction of the inserting clamping opening is consistent with the direction of an opening ofthe limiting force transmission clamp. The two clamping arms of the limiting force transmission clamp abut against the outer sides of the portions, forming the inserting clamping opening, of the twoconducting strips respectively. When the adaptive plug connector is inserted into the plug clamping opening with a certain transverse deviation, the adaptive contact piece applies a transverse actingforce to one of the two conducting strips and pushes the conducting strip to transversely shift, and the conducting strip transmits the acting force in the same direction to the other conducting stripthrough the limiting force transmission clamp, so that the other conducting strip laterally shifts towards the same side and is in contact with the adaptive plug connector.

The invention relates to a bus-bar supporting insulator and a switch cabinet. The bus-bar supporting insulator comprises an insulating column and an insert; one end of the insulating column is used fixedly assembled on a switch cabinet body; two insulating protective wings are integrally formed at the other end of the insulating column; the two insulating protective wings and the insulating columndefine an installing groove for installing a bus-bar lap joint structure; the two insulating protective wings are used for realizing insulating protection for the bus-bar lap joint structure; the insert is embedded in the groove bottom of the installing groove; the insert is a threaded sleeve with internal threads and is matched with a threaded fastener to fixedly assemble the bus-bar lap joint structure in the installing groove, or the insert is a screw rod with external threads and is matched with a nut to fixedly assemble the bus-bar lap joint structure in the installing groove; the two insulating protective wings can realize insulation protection role for the bus-bar lap joint structure in the installation groove, an insulation distance between two phases is guaranteed; and the insulation column support the bus-bar lap joint structure, meanwhile, the threaded fastener or the nut is not exposed, and the discharge phenomenon of the threaded fastener or the nut is avoided.

The invention relates to an electric reactor based on a hollow wire wrap and a manufacturing method of the electric reactor. The electric reactor comprises the hollow wire wrap and an iron core cake, wherein the hollow wire wrap is connected onto the iron core cake in a sleeving manner, and an annular gap is reserved between the hollow wire wrap and the iron core cake; a plurality of I-shaped bar stays are arranged in the annular gap by surrounding the periphery of the outer surface of the iron core cake; the hollow wire wrap and the iron core cake are arranged in a fastening manner through the plurality of I-shaped bar stays. According to the electric reactor based on the hollow wire wrap, provided by the invention, the structure is simple, the machining is convenient, deformation problems of iron core cakes during enwinding with iron core cakes are avoided, the labor intensity of workers is reduced, dangers in the transportation process, particularly of heavier iron core cakes, are avoided; besides, the I-shaped bar stays are arranged, so that the insulation distance between the hollow wire wrap and the iron core cake can be ensured, and air passages between adjacent I-shaped bar stays facilitate heat dissipation, so that heating problems of the hollow wire wrap and the iron core cake are solved.

A plug, adapted to be connected to a direct current (DC) outlet for supplying a DC power thereto, includes a plurality of round bar-shaped plug pins which protrudes from a front surface of a plug main body, and a surrounding wall which protrudes from the front surface of the plug main body to surround the plug pins. The plug pins are adapted to be connected the pin-receiving pieces through pin insertion holes of the DC outlet and to be supplied with power from the DC outlet. The surrounding wall is adapted to be inserted into an insertion groove of the DC outlet which is formed around the pin- insertion holes. The surrounding wall is formed in a substantially quadrangular shape, viewed from a front side thereof. The plug pins are arranged along a reference surface corresponding to one inner surface of the surrounding wall and offset closer to the reference surface than to an inner surface opposite to the reference surface.

An object is to provide an inverter module capable of reducing installation space, and in summary, the inverter module comprises a switching element group provided in a mold package to convert a DC voltage into a three-phase pseudo AC voltage by switching, wherein resistors to detect voltages before and after a switch connected in serial to a DC power source are integrally molded into the mold package, and wherein there are provided pins to connect the resistors before and after the switch, and pins to output terminal voltages of the resistors.

The invention relates to a bus extension butt joint structure and a GIS. The bus extension butt joint structure comprises: a cylinder body which is provided with a first connecting flange, wherein the first connecting flange is provided with a first flange hole; an end cap provided with a second connecting flange, wherein a second flange hole is formed in the second connecting flange; an insulator arranged between the cylinder body and the end cap, wherein a fixing hole is formed in the edge of the insulator; a flange ring arranged between the insulator and the end cap, wherein a third flange hole is formed in the flange ring; and a screw rod, wherein fixing nuts are arranged at the two ends of the screw rod, and the screw rod penetrates through the first flange hole, the fixing hole, the third flange hole and the second flange hole so as to fixedly connect the cylinder body, the insulator, the flange ring and the end cap together. A limiting protruding part is arranged on the screw rod, a limiting groove is formed between the second connecting flange and the flange ring, the limiting groove is used for containing the limiting protruding part, and the limiting protruding part is matched with a fixing nut on the side of the cylinder body so that the cylinder body, the insulator and the flange ring can be independently fixed together.

The invention provides a coil device which can be miniaturized and can properly ensure an insulation characteristic. The coil device (10) is provided with components of a first frame (20) which comprises a first hollow cylinder part (22) that is provided with a first coil (72) that winds at the outer periphery and is hollow and cylindrical, a first end flange part (26) which projects in a direction from one end of the first hollow cylinder part (22) to the profile, and side wall parts (291,292) which project in a direction from the first end flange part (26) to the coiling ribbon of the firstcoil (72) and has wall surfaces that extend from the inner circumference first terminal flange part (26) to the outer circumference; and a core (60a) which is provided with a shaft leg part (62a) thatis inserted into the inner part of the first hollow cylinder part (22), and a connecting part (64a) which passes the outer periphery side of the first frame (20) and is connected with one end of theshaft leg part (62a), wherein at the opposite surfaces (291a,292a) of the side wall parts (291,292), recessed parts and projected parts are formed in a repeated manner from the inner circumference tothe outer circumference of the side wall parts (291,292).

A line filter of the invention is to sufficiently ensure an insulation distance between an L-shaped terminal and a common mode magnetic core equipped on a terminal platform, and furthermore position a normal mode magnetic core which is inserted from a side surface of a winding tube. The line filter is provided with the following components: a terminal-equipped winding tube (10) which comprises a core winding part (12) coiled by a pair of coils, two end flanges (13) provided at two ends of the core winding part (12), the terminal platform (16) provided below the two end flanges, and an L-shaped terminal (18) provided below the terminal platform; a transversely equipped common mode magnetic core (40) which inserts one magnetic pin (41) into the core winding part and form a closed magnetic path; the common mode magnetic core (30) which is magnetically coupled with the closed magnetic path of the common mode magnetic core and is inserted into a recess (15) that is provided at a side surface of a middle flange (14); and an insulative cover (50) which is provided between the common mode magnetic core and the terminal and is blocked with the terminal-equipped winding tube (10) when the normal mode magnetic core which is inserted into the recess is jointed through pressure joint.

The present invention relates to a junction box for circuit connection of a refrigerator and a refrigerator including the junction box. The junction box includes a base plate, a surrounding frame and a cover plate, wherein the base plate includes a rectangular flat plate and has mounting holes for passing wires and fixing terminals, the surrounding frame protruds equidistantly from the element side of the base plate away from the base plate so as to hermetically surround each of the mounting holes, the cover plate tightly covers the opening of the surrounding frame, wherein the height of the surrounding frame is designed so that the distance from the external surface of the cover plate to the terminals matches the predetermined value of corresponding standards.

The invention discloses a supporting fixture of a rectangular conductor, which has good insulating performance and high intensity. The M-shaped supporting fixture aims at solving the problems that the volume of the groove type conductor in the present medium / high-voltage electric field is large, the requirement for the volume of a wall bushing is higher and the cost is high. Supporting ribs are arranged at the two sides of the supporting fixture. The supporting fixture is suitable for load-bearing a clamping plate of the rectangular conductor with the working current of 2,000 to 6,300A. One to four rectangular conductors can be installed, four rectangular conductors can be divided into two groups, each group comprises one to two rectangular conductors, two groups of grooves are symmetrically arranged, the conductors are separated by bulges between the grooves, and inclined planes which are arranged at the bottom parts of the grooves can support the conductors to some degree. The supporting fixture is made of nylon materials and is formed by a mould through pouring; the flexibility of the materials is good and the conductors cannot be damaged; the rectangular conductors with different specifications can be installed; the insulating performance is good, the intensity is high, and the practical application range is wide.

An isolating / grounding switch with three phases in one enclosure has a simple conductor shape and a higher space utilization rate. The switch includes a housing, three first conductors and three second conductors, three first static contacts each connected to one of the first conductors, three second static contacts each connected to one of the second conductors, three moving contacts connected by an insulator, and three grounding contacts electrically connected to the housing. Each first static contact and a corresponding first conductor have the same axis as a corresponding second static contact and a corresponding second conductor. Each moving contact can slide on a corresponding first conductor and is electrically connected thereto. Each moving contact is electrically connected to a corresponding second static contact when at one end of a corresponding first conductor, and electrically connected to a corresponding grounding contact when at the other end of this first conductor.

The invention provides an insulator, a motor and a compressor, which inhibits stress applied to a wire when equipping wires inside and outside an insulator wall surface of the motor stator and prevents damage owing to press and vibration to an angle portion. The insulator has a circular periphery wall portion (46w) which extends along the shaft direction of a core portion and forms a groove (46xS) allowing the wire (43b) to pass. An inclination surface (51) which is inclined in the racial direction of the core portion relative to the axial direction of the core portion is formed in one wall portion (46wL) in wall portions on two sides of the groove (46xS) in the periphery wall portion (46w) and on the periphery side of the end portion opposite to another wall portion (46wR). The wire (43b) is disposed along the inclined surface (51).

The invention relates to an insulating isolation device for a high-voltage direct-current test of a metallic oxide arrester. The insulating isolation device is a bell-shaped cover body, wherein the lower end of the cover body is open, the cover body is hollow and is made of insulating materials, the cover body comprises a cover top arranged on the top, and a cover body arranged on the lower portion, an inner cavity of the cover top is matched with the head of the metallic oxide arrester in shape, the diameter of the opening portion of the lower end of the cover body is no smaller than 1.5 times that of an umbrella skirt of the arrester, and the height of the cover body at least meets the requirement that when the cover top is installed on the head of the metallic oxide arrester in a sleeved mode, the cover body can partially cover the umbrella skirt on the upper portion of the arrester. The insulating isolation device is good in flexibility, can be conveniently placed in a narrow space or a cramped space, and is good in safety performance, convenient to carry and easy to operate.