23results about How to "Improve insulation reliability" patented technology

The utility model provides a kind of current transformer and GIS, belong to high voltage switch field.The current transformer includes mutual inductor cylinder and flange, the outside of flange is equipped with gasket by fastener, the height of mutual inductor cylinder protruding from the outside of flange is greater than the height of fastener and gasket protruding from the outside of flange, one end of mutual inductor cylinder is provided with tangent outside fillet and inside fillet passing through spacer ring, the radius of inside fillet is ten times to fifteen times of the radius of outside fillet, the junction of inside fillet and mutual inductor cylinder inside surface is located between the outside surface and inside surface of flange.The GIS includes the current transformer described above.The utility model dispenses with shielding ring, but by the design and optimization of mutual inductor cylinder structure, the end of mutual inductor cylinder can replace shielding ring and play the role of shielding isolation between conducting rod and gasket, screw.

The invention relates to the technical field of batteries, and discloses a pole column and a forming process thereof, a battery cell cover plate assembly and a battery cell. The pole forming process comprises the following steps: stamping and blanking a conductive composite board along a Z direction to obtain a pole body; wherein the pole body comprises a first conductive section and a second conductive section; wrapping and limiting the first conductive section, and extruding and expanding the local part of one end, far away from the first conductive section, of the second conductive section along the Z direction, so that an annular flange is formed on the side wall of the second conductive section on the X-Y plane; stamping and stretching the local part of the annular flange to enable the free end of the annular flange to form a pole turnup; wherein the pole turnup comprises a first turnup and a second turnup which are connected with each other, the first turnup extends towards the direction far away from the second conductive section along the Z direction, the first turnup and the first conductive section are arranged at an interval, and the second turnup extends towards the direction far away from the first conductive section. The pole prepared by the invention can reduce heat transferred to the upper plastic, and the insulating property of the pole is guaranteed.

The utility model relates to a kind of three-phase voltage transformers of compartment, including shell and first, second single-phase mutual inductor, the top of shell is arranged three-phase, each phase includes a root of fusing tube, shell also includes three internal fusing tubes, the inner wall of the tube bottom of each internal fusing tube is arranged with spring contact finger, fuse is placed in tube, second nut is installed in tube mouth, the primary winding of first, second single-phase mutual inductor is electrically connected with first to fourth electrically conductive pole respectively, define three fusing tubes as first to third fusing tube, the other end of first electrically conductive pole is electrically connected with the spring contact finger of first fusing tube, the other end of second electrically conductive pole, third electrically conductive pole is electrically connected with the spring contact finger of second fusing tube, the other end of fourth electrically conductive pole is electrically connected with the spring contact finger of third fusing tube. Utilize a kind of three-phase voltage transformers of compartment designed by the utility model, can solve the problem of traditional three-phase voltage transformer common fusing tube, compact structure, increased operation and maintenance difficulty, reduced replacement efficiency.

This invention discloses a composite insulator skirt design method that adapts to different icing zones and coordinates with hot water jet de-icing, relating to the field of transmission line insulator technology. Addressing the problems of fixed umbrella shape parameters, poor adaptability to different icing zones, and susceptibility to ice flashover caused by icing bridging in existing composite insulators, this invention employs a modular, graded, and adjustable umbrella skirt assembly in its main composite insulator structure. Differentiated umbrella diameter, tilt angle, and spacing parameters adapt to the icing characteristics of light, medium, and heavy icing zones, while simultaneously coupling and adapting with the parameters of hot water jet de-icing technology. This invention achieves coordinated icing suppression and hot water jet de-icing in different icing zones, delaying icing bridging, increasing ice flashover field strength, and reducing operation and maintenance costs through modular design, ensuring the safe and stable operation of transmission lines in icing areas.

The application discloses a multi-winding transformer, which comprises a framework and a magnetic core body fixed on the framework, and a first primary winding N1, a first secondary winding N2, a second secondary winding N3, a second primary winding N4 and a shielding layer winding N5 are sequentially and layer by layer wound on the framework; when the second primary winding N4 is wound, the second primary winding N4 is wound on the take-up end of the first primary winding N1, and the start end and the take-up end of the first primary winding N1 and the start end of the second primary winding N4 are all sleeved with an insulating sleeve for providing insulation protection. The primary winding is wound in a layered manner, and the secondary winding is wrapped, so that the magnetic resistance between the primary winding and the secondary winding is reduced through the structure of being tightly wrapped, the coupling interference caused by the distributed capacitance and the leakage inductance is reduced, the coupling coefficient between the primary winding and the secondary winding is improved, and the electromagnetic compatibility of the transformer is improved.

The utility model provides a kind of welding cooling device of stator bar, including clamp and air cooling clamping monomer, two air cooling clamping monomers are placed axially symmetrical and constitute air cooling clamp, two ends of air cooling clamp are clamped by clamp, the inside of air cooling clamping monomer is equipped with several ventilation grooves and two horizontal air ducts, and the side of air cooling clamping monomer is equipped with first air inlet, second air inlet and stator bar clamping groove.The utility model has the beneficial effects that (1) dry cooling eliminates the risk of damp, guarantees insulation performance;(2) multi-channel airflow structure realizes uniform and efficient heat dissipation;(3) double air inlet linkage heat dissipation.

The application discloses a manufacturing method of a high-heat-dissipation-efficiency pouring type driving transformer, and belongs to the technical field of power electronic equipment manufacturing. The method aims to solve the technical problems of low heat dissipation efficiency and insufficient long-term reliability of the existing driving transformer caused by the limited heat conduction performance of the pouring material, the simple surface heat dissipation structure and the difficult coordination of internal thermal stress. The method comprises the following steps: constructing a three-dimensional digital model of a reinforced heat dissipation structure with a boss array and a groove array and preparing a corresponding forming die; positioning a magnetic core and a winding as an insert in a die cavity; pouring insulating colloid with different mechanical and heat conduction properties in batches in a vacuum environment; through a segmented curing process, the flexible colloid is fully filled in the internal gap and buffers the stress, and at the same time, the high-heat-conduction rigid colloid forms an external main body and a heat dissipation structure, thereby forming an integrated pouring body. The method is used for manufacturing the driving transformer suitable for high-power-density and high-heat-dissipation scenes, and can significantly improve the heat dissipation capacity and operation reliability of the driving transformer.

The invention discloses an electrical test bracket for a drop-out fuse, relates to an auxiliary device for an insulation test of a circuit breaker, and aims to solve the problems of non-standard support, poor safety and low test efficiency of the conventional support device. According to the invention, two insulating pillars are vertically arranged on a metal chassis side by side; the number of the insulation clamping supports is two, the insulation clamping supports are correspondingly arranged at the top end of the insulation supporting column, each insulation clamping support is provided with a groove, and the two grooves are used for being matched with the connecting portions of the two ends of the drop-out fuse so that the drop-out fuse can be kept in a horizontal state. When the drop-out fuse is placed in the groove, the distance between the grounding end of the fuse and the ground is not less than 120cm. The beneficial effect is that the safety and the insulation reliability of the test process are significantly improved.

This application discloses a dielectric gradient coating for insulating separators, its preparation method, and its application, belonging to the technical field of electrical equipment insulation materials. The method includes the following steps: (1) adding ethylenediamine and perfluorooctyltrimethoxysilane to a solvent to obtain a modified solution, and then adding nano-graphene to the modified solution to obtain fluoroammonia-modified graphene; (2) mixing the first and second dispersions prepared from the fluoroammonia-modified graphene and magnesium-aluminum hydrotalcite respectively to obtain electrostatic spraying liquids with different concentration gradients; (3) sequentially electrostatically spraying the electrostatic spraying liquids with different concentration gradients onto the surface of the separator to form a dielectric gradient coating, wherein the dielectric constant in the dielectric gradient coating increases from the inside to the outside. In this method, the fluoroammonia-modified graphene is uniformly dispersed in epoxy resin and improves the density of the epoxy resin, thereby increasing the bonding force between the coating and the substrate, and thus improving the service life of the insulating separator under high temperature and high humidity conditions.

The invention relates to the technical field of power cables, in particular to a middle-high voltage power cable for long-distance high-capacity power transmission and a preparation method of the middle-high voltage power cable for the long-distance high-capacity power transmission. The conductor shielding layer is coated on the outer wall of the layered split conductor; the insulating layer is coated on the outer wall of the conductor shielding layer; the insulating shielding layer is coated on the outer wall of the insulating layer; the buffer layer coats the outer wall of the insulation shielding layer; and the armor layer coats the outer wall of the buffer layer. The layered split conductor structure breaks through the process limitation of the number of traditional split conductor strand blocks, the composite insulation structure layer is composed of the micro-arc oxidation insulation separation layer and the composite elastic insulation rope, the ultra-thin and tough ceramic coating replaces crepe paper, the filling coefficient and the insulation reliability are improved, and through the filling buffering effect of the elastic rope, the insulation performance of the conductor is improved. And the integrity of the insulating coating under a harsh process is protected.

The invention relates to the technical field of new energy, in particular to a gluing tool and a battery system.The gluing tool comprises a moving part which moves relative to a pole piece; the gluing assembly is arranged on the moving part and comprises a glue storage part and a gluing part, the glue storage part is used for storing insulation glue, the gluing part is provided with a glue outlet, and the glue outlet is connected with the glue storage part; the adjusting assembly is arranged on the gluing piece and is used for adjusting the widths of the two ends of the glue outlet in the length direction of the glue outlet, so that the gluing thickness on the pole piece is consistent; the length direction of the glue outlet is perpendicular to the moving direction of the moving part. In the whole gluing path, the consistency of the thickness of the glue layer is ensured, and the safety performance of the battery is improved.

The utility model belongs to the battery field, concretely is a kind of battery package installation platform and battery package.The battery package installation platform includes support frame and fixed assembly;Support frame is used to support N battery components in battery package, and fixed assembly includes N pressing plate and 2N connecting piece;Two ends of N pressing plate and the two edge beams of support frame along x direction extension are connected respectively by connecting piece, and z direction binding force is provided to N battery components, to fix battery component on support frame.The utility model places multiple battery components on support frame, and increases pressing plate on the top of each battery component, and limiting battery component in z direction by pressing plate.In the mobile process of battery package, to ensure that battery component can work stably and reliably.

This utility model relates to the field of motor stator insulation technology, and discloses a stator assembly with improved insulation structure, including a stator core. The stator core contains multiple stator windings arranged in a circular array. A detachable and easily replaceable insulation component is provided between the stator core and the stator windings. Each stator winding has a fixing component on both sides that allows for quick installation and removal from the insulation component. By setting detachable insulation rings and fixing posts, the insulation structure and stator windings can be replaced individually, reducing maintenance costs. The fixing component, composed of sliding blocks, stops, and limiting plates, enables quick installation and removal of the stator windings, improving maintenance efficiency. The structural design of the "7"-shaped insulation ring, triangular stops, and friction rubber further improves the insulation reliability and fixing stability of the stator assembly, extending the service life of the motor.

The application discloses an isolation transformer and a safety barrier. The isolation transformer integrates multiple transformer units, and the transformer comprises a multilayer printed circuit board, multiple primary winding groups, multiple secondary winding groups, multiple magnetic cores and multiple metal shielding structures. Multiple through holes are formed in the multilayer printed circuit board and penetrate the multilayer printed circuit board; the primary winding groups and the secondary winding groups are annular copper foil windings formed on the multilayer printed circuit board; the magnetic cores are embedded in the through holes and used for forming a closed magnetic circuit to realize magnetic-electric coupling between the primary winding groups and the secondary winding groups in the transformer units; the metal shielding structures are metal shielding frames formed on the periphery of the multilayer printed circuit board and used for shielding electromagnetic interference; one primary winding group, one secondary winding group, one magnetic core and one metal shielding structure constitute one transformer unit. The application is beneficial to integrated multiple transformer units, improves the insulation reliability and electromagnetic compatibility performance of the isolation transformer, and reduces the production cost of the isolation transformer.

The application provides an insulating end plate of a stator, a stator, a motor, a compressor and a vehicle. The insulating end plate of the stator comprises a blocking part, a winding part and a wire passing part. The wire passing part is arranged on one side of the blocking part along the radial direction of the stator. The wire passing part comprises a connecting section, a lead-in section and a lead-out section. The winding part is connected between the connecting section and the blocking part. The lead-in section and the lead-out section are connected to the first axial end surface of the connecting section. The lead-in section and the lead-out section are arranged in a spaced manner along the circumferential direction of the stator to enclose a wire passing groove. The lead-in section and the lead-out section each have a first radial end surface and a second radial end surface along the radial direction of the stator. The first radial end surface of one of the lead-in section and the lead-out section is provided with a first wire groove, and the second radial end surface of the other one is provided with a second wire groove. The first wire groove and the second wire groove are communicated through the wire passing groove. The winding part can be closely arranged on the insulating end plate of the stator, the wire end is reduced, and the automatic winding of the equipment is facilitated.

The utility model discloses a silicone rubber insulation copper-clad aluminum control cable, which relates to the technical field of cables and comprises a cable core, the cable core is composed of a copper-clad aluminum conductor and an insulation layer, the insulation layer is made of silicone rubber, elastic silicone rubber strips are arranged on the surface of the copper-clad aluminum conductor at intervals, an inner protective layer is arranged outside the cable core, and the inner protective layer is made of silicone rubber. The inner protection layer is composed of a fiber belt layer, a silicone rubber binder and a buffer layer, a shielding layer is arranged outside the inner protection layer, the shielding layer is composed of a shielding inner layer and a shielding outer layer, an outer protection layer is arranged outside the shielding layer, and the shielding outer layer is composed of a shielding inner layer and a shielding outer layer. The problems that a traditional control cable is high in cost, poor in insulation performance, insufficient in flexibility and poor in electromagnetic shielding performance are solved.

This utility model relates to the field of busbar technology, and particularly to a high-temperature resistant insulating busbar. A high-temperature resistant insulating busbar includes a busbar conductor, the outer surface of which is coated with ceramic silicone, the outer surface of which is coated with fiberglass cloth or a polyimide film, and the outer surface of which is coated with a polyamide insulating layer. This utility model utilizes the complementary properties of polyamide and ceramic silicone to solve the problem of decreased mechanical properties and loss of insulation performance of traditional materials at high temperatures. Through the development of special pretreatment and composite processes, the interfacial bonding force between polyamide and ceramic silicone is enhanced, preventing delamination and peeling under high-temperature thermal stress. This achieves a uniform and dense coating of the insulating layer on the busbar surface, eliminating defects such as bubbles and impurities, and ensuring that the busbar still possesses reliable insulation performance and mechanical strength under high-temperature environments.

The utility model relates to the technical field of electric power engineering, in particular to an insulating operating rod with a cluster parachute protection function. The utility model relates to an insulating operating rod with a cluster parachute protection function, which comprises a first operating rod and a second operating rod, the top of the first operating rod is provided with an operating head, the middle part is provided with an insulating umbrella group, and the bottom is provided with a first detachable connection structure. A second detachable connecting structure is arranged at the top of the second operating rod, and a grip is arranged at the bottom of the second operating rod; the first operating rod and the second operating rod are detachably connected through the first detachable connecting structure and the second detachable connecting structure. According to the utility model, the insulating performance is obviously improved by arranging the insulating umbrella group, the use flexibility is enhanced by detachable connection, the operation head and the grip are matched to ensure accurate and stable operation and anti-skid insulation, and the main body of the rod body is made of epoxy glass fiber reinforced plastic to ensure firmness and durability; the whole device has outstanding advantages in the aspects of guaranteeing the safety of operators, improving the power operation efficiency, reducing the use cost and the like.

The utility model discloses an installation structure of arc extinguishing magnetic steel and relay relates to relay technical field. The relay includes base, dynamic / static contact subassembly, arc extinguishing magnetic steel and shell. The core improvement lies at: the contact receiving cavity of base is equipped with the arc extinguishing magnetic steel installation slot of opening to the side, and the arc extinguishing magnetic steel directly inserts into the slot, and the relative position of contact subassembly is set through single base integration, the sidewall of arc extinguishing magnetic steel installation slot is higher than arc extinguishing magnetic steel to enhance the insulation performance between contacts, and the inside of shell is equipped with blocking rib and limits magnetic steel to come out. Simplify the assembly process, improve structural stability and space utilization, and be applicable to automation production.

The utility model discloses a battery shell and a battery, and belongs to the technical field of batteries. The battery shell comprises a bottom plate and a plurality of side plates; the plurality of side plates are sequentially connected end to end to form a hollow shell-shaped structure with openings at two ends, and the bottom plate covers the opening at one end of the hollow shell-shaped structure; a concave area is formed in the position, close to the bottom plate, of at least one side plate and used for containing the overlapping section of the insulating film. According to the battery shell, the sunken area is arranged on at least one side plate and can be used for accommodating the overlapping section of the insulating film, so that the thickness of the overlapping section protruding out of the surface of the corresponding side plate is reduced or even eliminated, the probability that the overlapping section is warped due to scratching is reduced, and the insulation reliability of the whole battery during use can be improved; in addition, the overlapping section is accommodated in the sunken region, so that the insulating film can be prevented from occupying extra space in the thickness direction, and the energy density of the battery is effectively improved.

The utility model provides a heating device suitable for a large temperature range, which comprises an upper disc surface, a heat conduction disc, a transition heat conduction disc and an insulating layer which are sequentially arranged from top to bottom, the bottom of the upper disc surface is provided with an annular groove, the heat conduction disc is embedded in the annular groove of the upper disc surface, and a first cooling pipe and a heating wire sleeve are embedded in the heat conduction disc; the transition heat conduction disc and the insulating layer are of an annular structure and form a channel in the center, a protective pipe is inserted into the channel, and a corrugated pipe is arranged at the bottom of the insulating layer and sleeves the protective pipe; a back pressure pipe is arranged in the protective pipe, the top end of the back pressure pipe is connected with the upper disc face, and bias voltage is applied to the upper disc face through the back pressure pipe. The insulating layer comprises an insulating inner ring and an insulating outer ring, a first sealing groove is formed in the contact face of the transition heat conduction disc and the insulating inner ring, a first sealing ring is arranged in the first sealing groove, and a second cooling pipe is embedded in the position, corresponding to the first sealing groove, of the top face of the transition heat conduction disc.

The present application relates to a kind of high yield strength acetal self-adhesive enameled aluminium transposed conductor wire and its preparation method.The present application includes high-strength acetal self-adhesive enameled aluminium flat wire, which includes aluminium flat conductor, acetal insulating paint layer coated on the outer periphery of the aluminium flat conductor, and self-adhesive paint layer coated on the outer periphery of the acetal insulating paint layer;The acetal insulating paint layer is formed by multi-coating acetal paint, and the self-adhesive paint layer is formed by multi-coating self-adhesive paint;Transposed core, which is formed by transposing and laying side by side a plurality of the high-strength acetal self-adhesive enameled aluminium flat wire according to a predetermined transposition pitch;Paper insulation layer, which is coated on the outer periphery of the transposed core to keep a plurality of the transposed core in a bundled state and form external insulation.The present application improves the yield strength of the transposed conductor wire and maintains the resistivity at a low level, thereby balancing mechanical strength and electrical conductivity.

This invention relates to an intermediate transformer for testing, comprising a core, a low-voltage winding, a high-voltage winding, a voltage-regulating winding, and an oil tank. The core is a single-phase three-column structure. The low-voltage winding, high-voltage winding, and voltage-regulating winding are sequentially nested on the outer side of the core from the inside out, with an insulation structure between the low-voltage winding and the high-voltage winding. The low-voltage winding is used to connect to a low-voltage frequency converter power supply. The high-voltage winding consists of two coils with the same number of turns arranged axially, with a formed insulation device at the middle of the two high-voltage windings. The two high-voltage windings are sequentially connected to the voltage-regulating winding via a series-parallel switch and a forward / reverse switch for outputting multi-stage test high voltage. The voltage-regulating winding adopts an axial two-way series continuous winding structure. The oil tank is a cylindrical structure without an external radiator, and a small oil conservator is located on the upper part of the tank. This invention enables wide-range multi-stage high-voltage output with small capacity and small volume, high insulation reliability, and is suitable for various testing scenarios of ultra-high voltage equipment.