114results about How to "High insulation level" patented technology

A method of constructing a building including erecting a plurality of truss elements to form a framework including one or more walls, a roof structure and a floor structure. Each truss element includes at least two joists and a plurality of braces that maintain the joists in a parallel arrangement, the truss elements being arranged in the framework to provide an inner joist and an outer joist. An inner covering layer and an outer covering layer are attached to the framework, thereby forming an enclosed void between the inner and outer covering layers that extends substantially continuously around the framework. An insulating material is injected into the void to form a substantially continuous insulating layer between the inner and outer layers.

The invention relates to the technical field of non-woven fabric processing, in particular to a processing technology for producing an electrical polyester non-woven fabric. The processing technology specifically comprises the following steps of: primary opening and fine opening of polyester fibers, cotton blending, vibratory cotton feeding, pre-combing, high-speed net laying, multi-roll drawing, primary combing, hot rolling and winding formation. A combing machine is used for pre-combing to remove impurities in longitudinal fibers of polyester fibers; the fibers are straightened through a multi-roll drawing process to prevent the fibers from being curled; and the combing machine is further used for primary combing to remove short staples. By adopting the processing technology, the situations that the static electricity of the fibers is much, the fibers are uneasy to comb, the cloudiness of the product is much and the like in the prior art can be avoided, the produced polyester non-woven fabric is enabled to have the characteristics of small thickness, good evenness and compactness, high tensile strength, high insulation class and the like, and the polyester non-woven fabric can be widely used as an insulating material for making insulated electrical equipment such as motors, power generators and transformers.

The present invention relates to a cascade power bus bar for maglev train maglev choppers. An insulating top plate, a conductive positive plate, an insulating partition plate, a conductive negative plate and an insulating bottom plate are orderly stacked and bonded to form a motherboard. A power end connecting hole group adaptive to a power end of a power module is arranged on the motherboard, wherein, the power end connecting hole group comprises a power end positive polarity hole, a power end negative polarity hole and a power end output hole; a positive hole and a negative hole are also arranged on the motherboard and form a connecting hole pair; conducting rings are respectively inlayed in all connecting holes on the motherboard; the power end positive polarity hole, the positive hole and the negative plate of the motherboard are separated by insulating rings; the power end negative polarity hole, the negative hole and the positive plate are separated by insulating rings; the power end output hole, the positive plate and the negative plate are also separated by insulating rings. The cascade power bus bar has the advantages of ensuring few connecting lines in maglev choppers, occupying small space, having low installation and maintenance cost as well as good heat dissipation of power devices, effectively inhibiting mutual interference among devices and improving the reliability of maglev train maglev choppers.

The invention relates to environment-friendly type fixed-sealing integrated and modularized vacuum looped network switch equipment comprising a cabinet body, a sleeve pipe with a main bus, a vacuum switch, an isolating switch, a current transformator and a ground switch, wherein the sleeve pipe with the main bus is arranged in the cabinet body; the vacuum switch and the isolating switch are fixedly sealed into integrated modules; the vacuum switch comprises a fixed sealing type vacuum arc extinguish chamber, an insulating pull rod and a vacuum switch operation mechanism, wherein the vacuum switch operation mechanism is linked with the insulating pull rod, the upper end of the insulating pull rod is connected with the dynamic end of the vacuum arc extinguish chamber, the static end of the vacuum arc extinguish chamber is connected with the insulating switch, the insulating switch is connected with the sleeve pipe with the main bus, and dynamic end of the lower end of the vacuum arc extinguish chamber is connected with the lower wire leading-out end of the vacuum switch through first flexible connection; and the ground switch is connected with a link mechanism linked with an insulating switch operation mechanism. The invention can reduce occupying space and production cost and has good environmental-friendly property.

The invention relates to a high tension transmission line comprehensive tester which is structurally characterized in that a data testing calculation unit is connected with a power supply module, a pulse width modulation (PWM) control unit, a direct current constant voltage constant current source, an impedance matching unit, a standard resistor, a measured line resistor, a relay control unit, a storage and printing unit, a display unit and a keyboard. The PWM control unit, the direct current constant voltage constant current source, a power supply filtering unit, the impedance matching unit, the measured line resistor and a standard resistor are sequentially connected. The relay control unit is connected with an interference voltage detection unit and the impedance matching unit. The resistance-capacitance voltage dividing principle is utilized to measure the static induction voltage under 20kV, a disperse Fourier development technology is adopted to test line loop resistance, digital filtering is utilized to remove alternating current components, only direct current components are measured, and direct current voltage of the line can be still measured accurately after alternating current is overlapped. The tester provides accurate data for fixed value setting of a line automatic device and ensures that a power system runs safely and reliably.

The application relates to the field of building materials and particularly relates to an improved sandwiched color-steel plate and a manufacture and construction method thereof. The color-steel plate comprises panels and a core plate, wherein the color-steel plate is in a shape of a rectangular plate; the internal core plate is provided with round holes along the length direction; the two sides of the core plate are provided with the panels; one side edge of the core plate is provided with a bulge, and the other side of the core plate is provided with a groove; the core plate is made of foam concrete materials, and plant stems are sandwiched in the concrete. The color-steel plate can be used as an inner / outer wall body or a top plate of a building; in installation, an adhesive is added in the groove, and after installation, the wall body is flat; the color-steel plate can be nailed and drilled, is moisture-proof and waterproof, and is sound-proof and heat-insulating.

The invention provides a coated insulating material for overall insulation of a railway switch installation device. The coated insulating material for overall insulation of railway switch installation device refers to an environment-friendly high polymer resin insulating material. The insulating material is prepared by the following steps: preparing a component A from a mixture of a hydroxyl-terminated polymer or an amino-terminated polymer containing activated hydrogen, low-molecular-weight polyhydric alcohols, polyamine, poly-hydroxy acids or other chain extenders and other weather-resistant protective materials; taking diisocyanate and polyisocyanates monomers, polymers, derivatives, or a prepolymer or a semi-prepolymer prepared by the reaction between a hydroxyl-terminated compound or an amino-terminated compound with isocyanate as a component B, and adding various protective materials according to the construction environment to prepare the double-component special insulating material for the railway switch with the solid content of 100 percent, thereby obtaining the insulating material disclosed by the invention.

The invention discloses a sealing structure for a sealing box. The sealing structure comprises an annular accommodating groove (1) positioned on an upper edge of a box body, an annular elastic sealing piece (2) accommodated in the accommodating groove (1), and a pressing plate (3) which is arranged on a box cover and is used for pressing against the elastic sealing piece (2), wherein a contact surface between the pressing plate (3) and the elastic sealing piece (2) is a plane; the elastic sealing piece (2) and the pressing plate (3) are pressed against each other through a pressing device arranged on the box body and the box cover; the elastic sealing piece (2) has the hardness of 45-50 degrees and the compression of 1-1.5mm; and the pressing plate (3) has the surface flatness of not more than 0.4. The sealing structure for the sealing box is good in sealing effect and high in insulating level, and has a protection level of IP67.

The invention discloses an insulating varnish and a preparation method thereof, belonging to the technical field of paints. The invention mainly overcomes the technical problem that a conventional insulating varnish does not have ideal insulating properties under the condition of high temperature. The insulating varnish comprises, by weight, 3 to 5.1% of dichloromethyl phenylsilane, 4 to 6.9% of monophenyltrichlorosilane, 2 to 3.5% of diphenyltrichlorosilane, 0.01 to 0.02% of zinc octoate and 20 to 30% of xylene, with the balance being tap water. The preparation method for the insulating varnish comprises the following steps: hydrolysis; washing; concentration; condensation; etc. The insulating varnish provided by the invention has a high insulation grade, strong high temperature resistance and a wide application scope.

An intelligent solid closed insulating fixed-type high voltage switchgear comprises at least one base cabinet which is installed in case body. Each base cabinet comprises three phase vacuum arc extinguishing switch units and the like. Each phase vacuum arc extinguishing switch unit, an isolation switch unit and a grounding switch unit are arranged in an insulation shell. An external surface of the shell is coated with conductive metal which is used for grounding. A central section of right side of the shell is provided with a cable inlet and outlet seat. A right transverse plane of a cylinder pullover of the cable inlet and outlet seat is provided with several ring grooves. An external surface of the cylinder pullover is provided with annular convex edges. Left and right parts of bottom of the shell are respectively downwards provided with an circular sleeve and a bus connection pedestal. The annular convex edge is arranged out of the circular sleeve. An insulator cap is installed on the circular sleeve. An upper end surface of the insulator cap is provided with the ring groove. A lateral wall of the groove is provided with the ring groove. A lower transverse plane of the bus connection pedestal is provided with the ring grooves and the external surface of the bus connection pedestal is provided with the annular convex edge. The shell of the invention has good insulating property and small volume. And the shell can be used safely and is convenient for connection. Electrical equipment in the shell can operate safely.

The invention relates to the field of glass fiber cloth manufacturing, and discloses a preparation technology of glass fiber cloth. The preparation technology comprises the steps of manufacturing grey cloth, rebeaming, and performing first thermal cleaning, second thermal cleaning, air airing and surface treatment. The glass fiber cloth has outstanding high temperature resistance, and good ablation performance, and an insulation grade of an electrotechnical product is raised.

The invention discloses a combined type direct-heating resistance furnace. The combined type direct-heating resistance furnace is composed of a heating unit set and a heat exchange system, wherein the heating unit set is composed of a plurality of resistance heating units, and each resistance heating unit is composed of a unit shell, a resistance heater assembly, an insulating heat-conducting medium, an insulating sleeve, a medium outlet, a medium inlet and an insulating layer; each resistance heater assembly is composed of a metal wire and a structural component used for supporting and fixing the conducting and heating metal wire; the heat exchange system is composed of a plurality of sets of medium circulating pumps, a medium heat exchanger and a heat circulating pipeline. According to the combined type direct-heating resistance furnace, the resistance heating units are interchangeable, and the working voltage and heating power of the combined type direct-heating resistance furnace can be changed by changing the mode of wire connection between the resistance heating units; due to the fact that the resistance heater assemblies are immersed in the insulating heat-conducting medium, the insulation grade of the resistance heater assemblies is improved, the sizes of the resistance heating units are reduced, and equipment instillation area is reduced; the combined type direct-heating resistance furnace can work reliably by manufacturing the unit shells with normal-pressure vessels.

The invention relates to the field of new energy automobiles, in particular to an intelligent distribution system for a new energy automobile charging pile. The intelligent distribution system comprises a charging pile which forms a chain through one main body connected with n split bodies. Each charging terminal is connected with a corresponding electric automobile; the charging terminal receivesthe power charging requirement of the electric automobile, and compares the power charging requirement with the module total power of a fixed power area corresponding to the charging terminal. If thepower charging requirement exceeds the total module power of the fixed power area, the charging terminal calculates the number of charging modules which need to be put into the direct-current bus ofthe current section, and issues the number of the charging modules to a matrix controller. The matrix controller puts the charging modules of the required number in a dynamic power area to the direct-current bus according to the required number of charging modules, and a module communication line is switched to the corresponding communication bus at the same time. The size of the charging pile isreduced, the installation space is saved, the installation time and maintainability are saved, and the utilization rate of a charging pile is increased.

A production method for a low-smoke halogen-free mica mineral reinforced fire-resistant cable material is disclosed. The cable material is composed of mica mineral, silica gel, an antioxygen adhesion rheological agent, polyethylene master batch, low-density polyethylene and high-density polyethylene, and is prepared by performing mixing, hot melting, extrusion, wind cooling and pelletizing. The cable material is easy for production, stable in performances and reliable in quality. After being added with the cable material, a cable has strong fire resistance, high insulation grade, strong shielding property, and strong resistance to strong acids and alkalis, and also is improved in ultraviolet resistance. After being added with a little amount of the cable material, a cable has the mechanical strength improved by two times or more, and does not easily generate layering phenomenon.

The invention discloses a high-voltage high-current phase selection closing apparatus. The closing apparatus comprises an operating mechanism, an arc extinguish chamber and a control loop; the arc extinguish chamber comprises a sealed insulating cylinder, and a moving contact and a fixed contact that are arranged in the insulating cylinder in an interworking manner; the fixed contact comprises a first fixed contact and a second fixed contact connected with an incoming line and an outgoing line respectively; the first fixed contact and the second fixed contact are fixed at the two ends of the insulating cylinder respectively; the moving contact is constantly in sliding electric connection with the second fixed contact; a brake-separating and brake-closing operation is finished by the separation and electric contact between the moving contact and the first fixed contact; the insulating cylinder is filled with compressed air; the output end of the operating mechanism is connected with the moving contact; and the control loop is used for controlling the actions of the operating mechanism. The arc extinguish chamber is insulated by adopting the high-voltage air to shorten the spacing among the contacts so as to adapt the high-voltage occasions requiring to improve the insulation level and reduce the spacing to ensure the rapid closing action; and in addition, the inherent closing time is ensured and the reliability in closing action is improved.

The invention provides a high voltage component and an air purifier. The high voltage component provided by the invention includes a tungsten filament, a tungsten filament mounting rack and a cover plate, wherein the tungsten filament mounting rack is provided with a tungsten filament fixing end; a tungsten filament is fixed at the tungsten filament fixing end and is covered by a cover plate; the high voltage component includes a first insulation pad; the first insulation pad is covered on the side, facing to the tungsten filament mounting rack, of the cover plate. According to the invention, as the first insulation pad is covered on the side, facing to the tungsten filament mounting rack, of the cover plate, compared with the prior art, the insulation of tungsten filament and the outside is changed from the insulation of one single cover plate into insulation of the cover plate and the first insulation pad, as a result, the insulation degree of the high voltage component and the outside is increased, electrion is effectively avoided or weakened, and the purification performance is rather stable.

The invention discloses a processing method for a thin paint film enamelled flat wire, which comprises the following steps: setting out a copper wire; performing softness treatment on the copper wire; performing four passes of paint mould scraping lacquering treatment on the processed copper wire by using an enamelled wire paint moveable die; baking the copper wire subjected to lacquering treatment; and winding up a finished product to obtain the thin paint film enamelled flat wire. The method changes the mode of ten passes of paint mould scraping lacquering baking into the four passes of the paint mould scraping lacquering baking. The enamelled flat wire obtained by the method has high insulation level, can effectively reduce the number of wrapping layers of insulation paper and has good head dissipation effect.

The invention provides a connection device applied to insulation tube type busbar ends. The device comprises a ferrule (1) which is arranged between the insulation tube type busbar ends and is used for satisfying the electrical property of the joint of the insulation tube type busbar ends, a pressing plate device which is arranged between the insulation tube type busbar ends and hoops two insulation tube type busbar ends in a plane-to-plane contact manner, or a tube-expansion device which elastically hoops two insulation tube type busbar ends. Through the ferrule (1), insulation and electric shielding of the joint of the insulation tube type busbar ends are realized. Through the pressing plate device, plane-to-plane connection of the insulation tube type busbar ends is realized, and the contact area is increased. Through the tube-expansion device, interference connection of the insulation tube type busbar ends is realized, and the relative contact pressure is increased. Crushing, built-in connection and external connection are avoided. The connection performance requirement of the insulation tube type busbar ends is met.

The invention discloses a positive / negative pole roll stocked with an insulation layer for a lithium ion battery. The positive / negative pole roll is a multi-layer lamination plate comprising a substrate, an adhesive layer and the insulation layer, wherein a single surface of a current collector of the substrate is uniformly coated with the adhesive layer, and the insulation made of ceramic is coated on the cured adhesive layer. With the structure, the advantages of high insulation performance and high melting point of ceramic are fully developed, no diaphragm is needed among lamination layers of the pole roll of a product with a substituted structure, two aspects are generated, on one hand, a potential risk is eliminated, on the other end, the lamination structure of the pole roll of the lithium ion battery is simplified, and the assembly efficiency is improved; and more importantly, by the structure, the insulation level among the pole roll layers is greatly improved, thus, the energy density is improved, and the usage safety of the lithium ion battery is enhanced.

The invention relates to a miniature metal totally closed vacuum switch cabinet which comprises a handcart room, a main busbar room, a cable room and an instrument room; the instrument room is positioned at the front half part of the upper part of the cabinet body and is provided with a microcomputer protecting device; the handcart room is positioned at the middle part of the cabinet body, a handcart type vacuum circuit breaker is arranged in the handcart room, the main busbar room is positioned at the rear half part of the upper part of the cabinet body, and an insulating sleeve pipe and an upper contact box are arranged in the main busbar room; an external lead-out rectangular busbar is connected with the upper contact box via a central busbar hole arranged outside the cabinet body to penetrate through the insulating sleeve pipe and rationally connected with a circular busbar, the upper contact box is connected with an upper outgoing line contact arm corresponding to the handcart type vacuum circuit breaker in an inserted way, and the lower outgoing line contact arms are respectively and correspondingly connected with a lower contact box at the upper part of the cable room; a lower contact is connected with the primary side incoming end of an A, B and C three-phase mutual inductor, and the primary side outgoing end of the mutual inductor is connected with a grounding switch when being connected with electric equipment outside. The invention has scientific, reasonable, compact and rigorous design, is economic and practical and is suitable for the distribution rooms such as institutions, schools, hospitals, guesthouses and the like.

Belonging to power system area, the disclosed digital current synthesizer includes current transformation module (CTM), data acquisition module (DAM), data processing module (DPM), power amplification module (PAM), and guidance wire way out module (GWWM). Connected relation of these modules is as following: CTM converts signal of three-phase current from current transformer to signal of voltage outputted to DAM; processing the collected signal to digital signal in real time rapidly, DAM transfers the process data to the DPM; after obtaining corresponding synthesized current value in single phase, the DPM sends the value to D / A conversion module to convert it to analog signal sent to PAM; amplifying the signal, PAM through GWWM inputs the amplified signal to metal guidance wire. The invention applies microcomputer differential protective system (DPS) to guidance wire channel, and makes compatibility between disclosed and traditional DPS at area to be protected possible.

The invention discloses a novel fully-automatic scissor type winder for a capacitor, which comprises a stepper motor, a synchronous belt of a motor fixing seat, a synchronous belt wheel, a high-density urethane paper feed roller, a paper feed roller seat, a paper feed tensioning steel wheel, a tensioning steel wheel seat, a pressing foil block, a foil feed station, a winding needle, a paper drawing clip and a paper padding device, wherein the paper padding device comprises an electrolytic paper double-rail fixing block, an electrolytic paper double rail, a pair of paper padding scissors and a paper padding support sheet. When the paper padding device is used, the insulation grade between a positive aluminum foil and a negative aluminum foil during working can be improved, and the capability of resisting pressure, temperature and ripples of a capacitor is improved, thus the qualified product yield can be directly improved in production and further the quality and the service life of the product are improved.

The invention relates to a three-layer co-extrusion ethylene-propylene high-voltage insulating tube bus comprising a tube bus made of T2 red copper. The tube bus comprises a tube bus main body and a tube bus connection part. The tube bus main body is of a hollow cylindrical structure. The tube bus connection part is of an elliptical structure formed by stitching the tube bus main body. The inner walls of the tube bus connection part are in mutual contact with each other and attached with each other in a linear mode. The tube bus main body is connected to the tube bus connection part through a connection component which is of a conical structure. The tube bus main body, the tube bus connection part and the connection component are manufactured through three-layer co-extrusion technology. The design is advanced. The installation is convenient and fast. The three-layer co-extrusion ethylene-propylene high-voltage insulating tube bus is low-carbon, environment friendly, energy saving and high in cost performance. The three-layer co-extrusion ethylene-propylene high-voltage insulating tube bus fills gaps in China. In operation, joints of the bus will not easily loosen or heat. The repairing and maintenance frequency are low. The usage cost is reduced to a great extent.

The invention provides a transformer with a built-in cabin used for wind power generation, comprising an oil tank, an iron core, a three phase winding, an externally-introduced joint and an insulating system. The transformer with a built-in cabin used for wind power generation is characterized in that the transformer body is of a horizontal type; the iron core is a three-phase five-column iron core structure which is arranged in a horizontal type; the inner layer of the three phase winding is a low-voltage cylindrical winding which is used for paving oil passage stays after winding is completed, and then the high-voltage winding is wound simultaneously; the case of the oil tank is a frame which is formed by bent thick steel plates; the case of the oil tank is externally welded with rippleplates, is sealed by adhesive tapes together with the case cover; the externally-introduced joint is an elbow-type cable terminal plug-in connector; and the insulating system is a solid-liquid mixinginsulating system. The invention changes the structure of the current wind power generation transformer to meet the use requirement of the built-in cabin for wind power generation; and the invention is characterized by full insulation, full sealing, stable electric property, good mechanical performance, good weather resistance, convenient and reliable connection, dampproof and dustproof properties.

The present invention discloses a voltage detection circuit and a voltage detection device. The voltage detection circuit comprises a high-voltage detection module and a low-voltage receiving module.The high-voltage detection module is in communication connection with the low-voltage receiving module; the high-voltage detection module is used for a multi-level converter; the high-voltage detection module is configured to perform sampling detection of bus voltage signals at a direct current side of the multi-level converter, perform encoding of the obtained sampling voltages and send the encoded sampling voltage to the low-voltage receiving module, the low-voltage receiving module is configured to emit signals to a measurement instrument after decoding. The communication connection betweenthe high-voltage detection module and the low-voltage receiving module achieves high-voltage isolation so as to achieve high insulation grade. The voltage detection circuit and device achieve sampling of a direct current capacitive voltage of the multi-level converter unit to facilitate detection of real-time data of the direct current capacitive voltage of a cascade unit in development, debugging and operation processes.

The invention discloses a neutral beam injection gradient pole voltage-dividing power supply high voltage leading-out wire terminal which comprises a sleeve, wherein the sleeve is made of a cylindrical polytetrafluoroethylene material; the periphery of the sleeve is cut into a projected annular sheet; a central hole through the top of the sleeve is formed in the central position of the bottom of the sleeve, and a high voltage leading-out wire is leaded out from the inner part of the central hole; a top cover is fixedly arranged at the top of the sleeve; an external screw thread is arranged at the lower part of the sleeve; the lower part of the sleeve is in screwed connection with a polytetrafluoroethylene screwed cap through the external screw thread; and rubber seal rings are respectively sleeved between the screwed cap and the sleeve as well as between the top cover and the sleeve. The leading-out wire terminal made of polytetrafluoroethylene is low in price, small in size, light in weight, high in insulation grade and convenient to install, and can be used for a long time; and the rubber seal rings are respectively sleeved between the screwed cap and the sleeve as well as between the top cover and the sleeve, so that the moisture outside is prevented from entering an oil tank through the central hole of the sleeve and the insulating oil is prevented from flowing out from the central hole of the sleeve.

The invention relates to a wireless energy transmission system and a control method thereof. The system comprises a DC power supply, an H-bridge inverter, a first compensation capacitor, a second compensation capacitor, a power transmission coil, a rectifier bridge, a DC / DC converter and an energy storage unit, wherein the DC power supply is accessed to the DC side of the H-bridge inverter; the AC side of the H-bridge inverter is connected with the primary coil of the power transmission coil through the first compensation capacitor; the secondary coil of the power transmission coil is connected with the AC side of the rectifier bridge through the second compensation capacitor; the DC side of the rectifier bridge is connected with the input end of the DC / DC converter; and the output end of the DC / DC converter is connected with an energy storage unit and a load. According to the technical scheme provided by the invention, the insulation level of the wireless energy transmission system is improved, the voltammetry level of the wireless energy transmission system is reduced, the system and the method are suitable for a high-voltage application situation, and maximization of the efficiency of the wireless energy transmission system is ensured.

The invention discloses a full-automatic slurry electromagnetic separation machine. The full-automatic slurry electromagnetic separation machine comprises a machine frame, wherein a bucket housing is arranged on the machine frame; a magnetic system is arranged in the bucket housing; a rotary barrel body is arranged in the bucket housing; a magnetic medium net is arranged between the rotary barrel body and the magnetic system; a charge hole, a discharge hole, a vibration motor and a high-pressure water pump are connected with the rotary barrel body; the charge hole is provided with a charge valve; the discharge hole is provided with a discharge valve; the magnetic system is arranged on the outer side of the rotary barrel body; and the rotary barrel body is also connected with an iron removal valve and a slurry return valve. The full-automatic slurry electromagnetic separation machine has a remarkable iron removal effect and is low in energy consumption.