44results about How to "High degree of insulation" patented technology

The invention discloses an adjustable type insulating sheath capable of preventing small animals. The insulating sheath includes a sheath body and tie bands; the sheath body is expanded as a shape ofa fan ring; one side of the sheath body is provided with at least two locking members; the other side of the sheath body is provided with at least two tie bands with one fixed end; one side and the other side of the sheath body partially overlap; and the other free end of each of the tie bands is fixed and connected by the locking members. Since the position where the one side and the other side of the sheath body partially overlap and the length of the tie bands can be adjusted, when the insulating sheath is used, the insulating sheath can be adjusted according to the size of different cablewire diameters. The insulating sheath is suitable for cables with different wire diameters, is good in versatility, and is convenient to operate.

The invention provides an intelligent distribution box of a distribution transformer, relates to intelligent power supply distribution management equipment, and aims at solving the problems that the connected point of a box body of an existing distribution box and external main power supply is arranged outside the box, so that the insulating sealing property is poor, and the box body is easily filled with water or affected with damp to oxidize, and is easy to age or overheat and the like, and the problems that the labor intensity of power constructors is increased during power-off maintenance and the like. The intelligent distribution box comprises an intelligent reset switch, an intelligent controller, a current relay protector, a control switch, a grounding protection device and a metering current transformer; the intelligent reset switch, the intelligent controller, the current relay protector, the control switch, the grounding protection device and the metering current transformer are fixed in the box body; the control switch is connected with the intelligent controller; the intelligent controller is connected with the intelligent reset switch; the intelligent reset switch is connected with the metering current transformer; the metering current transformer is connected with the current relay protector and an electric energy meter; and the intelligent reset switch is connected with the grounding protection device and load respectively. According to the intelligent distribution box, the main power supply can be automatically cut off by a distribution line in a power failure; and a three-phase short circuit of a load line is grounded, so that the safety of power supply maintenance personnel is ensured.

The invention relates to the technical field of transformers, in particular to a high-power planar transformer, which comprises a first magnetic core, a second magnetic core, a primary coil, a secondary coil and an insulating base, wherein the primary coil and the secondary coil are self-adhesion coils; the insulating base is provided with a centre shaft hole, the primary coil is arranged inside the insulating base and forms an integral structure with the insulating base, and the secondary coil is stacked on the insulating base; the first magnetic core and the second magnetic core are placed at two sides of the insulating base and form a magnetic path through the centre shaft hole; and the primary coil and the secondary coil are coupled. Because the coils are separately arranged inside aninsulator, the insulating degree is high, the manufacturing technology of the coils is simple, and the coils can be molded integrally through mold pouring; and because the coils are arranged inside the insulator, the structure can be more compact, the volume of the transformer is reduced, and the high-power planar transformer can be applied to thinner electronic products.

The invention relates to a composite material core used for an enhanced cable, a preparation process and the enhanced cable. The composite material core comprises an inner core and an outer layer, wherein the inner core is composed of fiber and thermosetting resin; the outer layer comprises a fiber woven pipe and thermosetting resin which are composited to form the outer layer; and the fiber woven pipe of the outer layer is a network structure which is woven by interlacing a plurality of fiber bundles. The transversal strength of the composite material core is greatly improved by the interlaced network structure, the fatigue resistance of the composite material core is greatly improved, and the service life of the composite material core and a power transmission cable is prolonged; and the problem that the composite material core is broken when the composite material core is stranded, wound and extruded by a conductor in the manufacturing process of the cable is completely avoided. Asthe fiber woven pipe is adopted by the outer layer, the flexibility of the outer layer is greatly increased by the interlaced and woven structure, thereby meeting the requirement of manufacturing composite material core with major diameter.

The invention discloses a drying agent for an mine underground electric apparatus and a preparation method of the drying agent, belonging to the field of drying agent, wherein macromolecule water absorbent, compound of silicon or calcium and alkali halide or modified starch are mixed so as to prepare the powdery draying agent according to part by weight; the macromolecule water absorbent is 35-70 parts; the compound of silicon or calcium is 25-55 parts; the alkali halide or a mixture of the alkali halide and the modified starch is 10-15 parts; the grain size of the macromolecule water absorbent is 0.20-0.40mm; and the drying agent is powdery. According to the invention, raw material is wide in source and is purchased easily on the market; the drying agent is used for high / low-voltage power supply appliances worked on a mine underground high-humidity condition (RH=80-100%); the dry powder resists 6000V voltage or does not be broken down under voltage of 3000V; when moisture rate reaches to 1g / g, the dry powder resists 2500V voltage or does not be broken down under voltage of 1200V.

The invention discloses a EB-type high-frequency transformer with high pressure resistance and filtering performance. The EB-type high-frequency transformer includes a skeleton, two magnetic cores anda shielding hood; the skeleton is clamped between the magnetic cores and the shielding hood, a buffer cavity is formed between the skeleton and the shielding hood, second insulation belts are twinedon the outer walls of the magnetic cores, the magnetic cores and the second insulation belts are located inside the skeleton, through holes are formed in the centers of two magnetic core center columns, insulation mats are in clamped connection with the interiors of the through holes and are composed of first half mat bodies and second half mat bodies, and the first half mat bodies and the secondhalf mat bodies are composed of embedded rubber, connection rubber and insulation rubber. According to the EB-type high-frequency transformer with high pressure resistance and filtering performance, the magnetic cores, the through holes and the insulation mats are arranged; when the magnetic cores of the transformer are machined, the lengths of the magnetic core center columns can be appropriatelyreduced, therefore, the safety distance formed between the magnetic cores is increased, and the purpose of improving the pressure resistance effect of the EB-type high-frequency transformer is achieved.