39results about How to "Increase creep distance" patented technology

The invention discloses a multi-step porcelain tube and a multi-layer gas discharge tube. Steps of the multi-step porcelain tube are provided with first discharge electrodes and second discharge electrodes; insulation porcelain sheets are arranged between the first discharge electrodes and the second discharge electrodes; and cavities formed by the first discharge electrodes, the second discharge electrodes and the insulation porcelain sheets are filled with inert gases. According to the multi-step porcelain tube and the gas discharge tube prepared by utilizing the multi-step porcelain tube, because the porcelain tube in which a plurality of step structures are designed is adopted, creep distances among clearances are increased effectively, and edge discharge among the clearances is prevented to guarantee that three individual discharge clearances are formed in a single-layer discharge tube, so that arc light voltage is doubled; the arc light voltage at a single layer achieves 65V; and the follow current capability is intensified greatly.

The invention relates to a protection tool using a power protection transmission line, in particular to a device for preventing a conductor from dancing and producing damage to an iron tower. The device comprises a sleeve fixedly connected with a lifting lug I, a pressure plate arranged at one end of the sleeve, a creepage extending skirt arranged around the sleeve, a permanent magnet arranged onthe inner wall of the sleeve, a pull rod sleeved in the sleeve and fixedly connected with a lifting lug II and a coil arranged on the pull rod, wherein the coil cuts magnetic force lines in the permanent magnet, and eddy current is produced in the coil so as to produce heat. The generation of the eddy current blocks the relative motion of the conductor connected with the device, and plays a role in consuming the kinetic energy of the conductor.

The invention belongs to the technical field of electric devices, and relates to an insulating pull rod for a breaker. The insulating pull rod solves the problem that when a connecting rod in the insulating pull rod of the prior breaker is assembled with a vacuum arc extinguish chamber, the connecting rod rotates and slides. The insulating pull rod of the breaker comprises the connecting rod, a disc spring, a spring pedestal and a rod body, wherein the lower end of the rod body is fixed with a connecting screw; the cylindrical spring pedestal is fixedly connected with the upper end of the rodbody; the upper end of the spring pedestal is fixedly connected with an external nut; the connecting rod is inserted into the spring pedestal; the upper end of the connecting rod passes through the external nut, and extends out of the spring pedestal; the disc spring is arranged in the spring pedestal and sleeved on the connecting rod; two ends of the disc spring act on the spring pedestal and the connecting rod respectively; and a circumferential positioning structure is arranged between the spring pedestal and the connecting rod. The insulating pull rod of the breaker can effectively solve the problems that the connecting rod in the insulating pull rod rotates and slides during assembly, and the insulating pull rod has higher external partial discharge and corona and the like, and simultaneously improves the insulating performance, withstand voltage and mechanical strength of the insulating pull rod.

The invention discloses a lightning protection and anti-icing insulator, which comprises two lightning arresters and a sub-insulator. The lightning arrester and the sub-insulator are connected into a Y-shaped overall structure through connecting plate fittings, and a sub-insulator located at the lower end of the Y-shaped overall structure is provided with a Arc angle. The invention can simultaneously realize the functions of lightning protection and anti-ice flashing, and is easy to meet the structural size requirements of the original tower window, without affecting the wind deflection, lightning protection and other performances of the line, and does not affect the insulation performance after lightning discharge, and the insulator has high insulation strength and long service life Long, easy to install, no need to change the tower structure, thus saving investment and reducing maintenance costs.

The invention discloses a sector array of short-wave double-layer logarithmic periodic antennas with a rigid structure, which is characterized in that: it includes a plurality of double-layer horizontal logarithmic periodic antennas supported by double-layer door-shaped brackets, and the projection on the horizontal plane forms equal angles Fan-shaped array; each of the double-layer door-shaped brackets includes two supporting towers and two upper and lower beams between the two supporting towers, and each beam is fixed with a pair of short-wave horizontal logarithmic periodic antennas along its length direction to form a fan-shaped inward Double-layer logarithmic periodic antenna phased array has the advantages of full rigidity, wide frequency band, high gain, high power, and good maintainability.

A 10kV power distribution circuit insulation tower head is disclosed, which is characterized by adopting hydrophobic high-strength insulation bar to be assembled with needle-typed insulator by a gold tool and form an insulation tower head integer, or adopting hydrophobic high-strength insulation bar to be assembled with gold tool directly and form an insulation tower head. By using the invention,the insulation level of the power distribution circuit can be greatly improved, the thunder discharge air gap can be obviously enlarged, the lightning stroke and line break accidents can be effectively prevented and the climbing distance can be expanded, further, the structure type is easy in improving self-cleaning ability and the occurrence of pollution flashover can be basically and completelyprecluded, which is beneficial in charged operation, simple in an operation process and improves the operation security.

The invention relates to a three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet which comprises a box body, an internal disconnecting switch, a vacuum circuit breaker, an earthing switch, a left cable incoming and outgoing end, a right cable incoming and outgoing end and an operating mechanism, wherein the disconnecting switch, the earthing switch and an insulating base are arranged on a skeleton of the box body; the insulating base comprises a T-shaped conducting rod; the upper end of the T-shaped conducting rod is used as a fixed contact of the disconnecting switch; the lower end of the T-shaped conducting rod is used as a fixed contact of the earthing switch; the right cable incoming and outgoing end is fixedly sealed at the right side of the lower end of the vacuum circuit breaker; the left end of the T-shaped conducting rod is used as the left cable incoming and outgoing end; the vacuum circuit breaker is connected with a spring stored energy operating mechanism; and the disconnecting switch and the earthing switch are respectively connected with a closed type manual operating mechanism. The three-phase common-proper compact type solid insulation high voltage alternating current vacuum switching cabinet has the advantages: live parts of all switching elements are encapsulated by adopting solid insulation materials; and the live parts are not exposed and are safer to use. Compared with similar products with voltage glass of 40.5kV and below, the switching cabinet has the advantages that the volume is reduced by 50-80%, the weight is reduced by 30-60% and raw materials are saved by more than 20-30%.

The invention discloses a vacuum load isolation switch-fuse combined electric appliance for wind power. The electric appliance comprises an isolation switch, a fuse, an operation mechanism and a wall-penetrating type embedded pole, wherein the isolation switch and the fuse are respectively and fixedly arranged at the two sides of a metal bottom frame, the wall-penetrating type embedded pole penetrates through the metal bottom frame, one end of the wall-penetrating type embedded pole is electrically connected with a soft connection and is fixedly connected with a guide rod, the other end of the wall-penetrating type embedded pole is fixedly provided with a static contact head, a vacuum arc extinguishing chamber and a conductive body are embedded in the wall-penetrating type embedded pole by epoxy resin material, and the conductive body is connected with the vacuum arc extinguishing chamber. The electric appliance has the advantage that a maintenance person is ensured to safely replace the fuse under the condition of live 35KV leading-in cables, and is more suitable for adverse environments and plateau areas.

The invention discloses a solid insulating piece surface treatment technology comprising sixteen steps of mould cavity manufacturing, mould cavity polishing, mould cavity hardening treatment, mould cavity photographic corrosion, mould installation and cleaning, mould heating, conductive material spraying, adhesive spraying, embedding piece installation and heating, material injection, temperature and pressure maintaining curing molding, product de-molding, product cleaning, curing after high temperature, examination, warehousing, etc. With special treatment on a mould and combination of corresponding production technology, a conductive grounding layer which is fused with insulating materials can be additionally arranged on the surface of a solid insulating piece, and appearance of the insulating piece can also be beautified. The solid insulating piece surface treatment technology is simple in technology, and the prepared product is great in insulating performance, great in dustproof and moisture-proof effects, reliable in operation and high in adaptive capacity to environment.

The invention relates to a base compacting device of a dry-type transformer coil. The device comprises a clamping piece connected to an iron core of a transformer and a base component connected to the clamping piece, wherein the transformer coil props against the base component which comprise a base cap, a base seat connected with the base cap, at least one base regulation block, at least one base column and an insulation buffer arranged at the bottom of the base column; and the base seat is provided with a cavity, and the base regulation block is compacted in the cavity of the base seat by the base column. According to the invention, a height-adjustable combined modularized compacting device is utilized, so that each part of the base component can be realized in a standardized manner, and the product differentiation is reduced, thereby being suitable for transformers of various models; and the base component can be used for respectively compacting high-voltage and low-voltage coils, prolonging the creeping distance between the high-voltage and low-voltage coils to the greatest extent, and greatly saving the mold cost required by an original epoxy resin cushion block.