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34results about How to "Guaranteed insulation requirements" patented technology

Mining explosion-proof submersible motor for booster pump

The invention provides a mining explosion-proof submersible motor for a booster pump, and belongs to the technical field of explosion-proof submersible motors. The mining explosion-proof submersible motor is structurally characterized in that an independent connecting box mechanism is arranged on the upper portion of the motor, connecting wires between the inside and the outside of the motor are arranged in a cavity inside the connecting box mechanism and connected through power cable connecting posts, an adjusting bag is arranged in the connecting box mechanism, a joint between an upper end cover of the motor and the connecting box mechanism is provided with a first explosion-proof junction surface, a joint between the upper end cover of the motor and a motor body shell is provided with a second explosion-proof junction surface, and a joint between the motor body shell and a lower end cover of the motor is provided with a third explosion-proof junction surface. Cables are conveniently and rapidly connected, coal mining accidents caused by internal reasons of the motor can be effectively prevented when the motor breaks the surface of water as the water level in a mine falls, and the motor can safely run in scores of meters and even hundreds of meters of underwater environments.
Owner:SHANDONG XINGYUAN MINING EQUIP GRP

Pseudo-classic architecture wall-window integrated earthquake resistant structure

InactiveCN105442726AFast construction of ancient buildingsAncient construction is convenientStrutsWallsEarthquake resistanceBrick
The invention relates to a pseudo-classic architecture wall-window integrated earthquake resistant structure. The structure comprises a girder, pillars, a wall structure and window frame structures, the wall structure is formed by jointing two or more bricks in a mortise-tenon mode, wherein mortise and tenon joint interfaces are arranged on the upper portion, the lower portion, the left portion and the right portion of each brick respectively, and the outer circumference of the wall structure is provided with mortise and tenon joint interfaces; each window frame structure comprises a window frame and a window sill, the adjacent window frames are formed by connecting wedge block mortise and tenon joints and reinforced through reinforcing hardware, the top end and the bottom end of each window frame is jointed with the corresponding window sill in a mortise-tenon mode, and the outer circumference of each window frame structure is provided with mortise and tenon joint interfaces; the wall-window integral structure is formed by jointing the mortise and tenon joint interfaces which are arranged at the outer circumference of the wall structure and the outer circumference of the window frame structures respectively, and the outer circumference of the wall-window integral structure is provided with mortise and tenon joint interfaces; the wall-window integral structure is in fitted connection with the pillars provided with mortise and tenon joint interfaces and the girder provided with concave-convex interfaces. The pseudo-classic architecture wall-window integrated earthquake resistant structure is good in collapse resistance and not prone to damage, and the structure and the materials have good earthquake resistance.
Owner:梁海森

Long-service-life and high-heat-radiation-performance set-top-box

The invention discloses a long-service-life and high-heat-radiation-performance set-top-box which comprises the components of a titanium-and-silver white fine coating, a heat radiation connecting layer, a precoat, a first protecting layer, a galvanized board, a second protecting layer and a titanium-and-silver white back coating; wherein the titanium-and-silver white fine coating, the heat radiation connecting layer, the precoat, the first protecting layer, the galvanized board, the second protecting layer and the titanium-and-silver white back coating are successively arranged from top to bottom. The titanium-and-silver white fine coating comprises the following raw materials according to weight parts: 100-120 parts of organic silicone resin, 10-20 parts of glass fiber powder, 20-30 parts of silver powder, 10-18 parts of zirconium carbide, 2-8 parts of titanium dioxide and 1-3 parts of surfactant. The titanium-and-silver white back coating comprises the following raw materials according to weight parts: 70-90 parts of epoxy modified acrylic resin, 20-25 parts of aluminum powder, 15-20 parts of scandium oxide, 2-8 parts of titanium dioxide and 1-3 parts of surfactant. The set-top-box has advantages of environment-friendly performance, high strength, high corrosion resistance, high heat radiation performance, high aging resistance, effective number reduction of layers, effective interface thermal resistance reduction, high luster, high heat radiation efficiency, no easy dust accumulation on the surface of the coating, no powdering cracking after long-term use, and no bubbling.
Owner:GUANGDONG FUSHENG IND CO LTD

Lightning arrester live-line test dolly

The invention designs a lightning arrester live-line test trolley which comprises a frame, three mechanical arms of the same structure are arranged on the frame, each mechanical arm comprises a base fixedly installed on the frame, the base is rotatably connected with one end of a first supporting rod, and the other end of the first supporting rod is hinged to one end of a second supporting rod. Anair cylinder is installed at the other end of the second supporting rod, a piston of the air cylinder is connected with the first connecting rod, the first connecting rod is hinged to second connecting rods on the two sides, the second connecting rods on the two sides are hinged to the middles of clamp arms on the two sides respectively, the clamp arms are hinged to a supporting frame, and the supporting frame is fixed to the second supporting rod. The three-phase wiring clamp of the lightning arrester tester is respectively clamped on the three clamp arms on the frame, the trolley drives theclamp arms to be close to the lightning arrester, and controls the clamp arms to stably clamp the lightning arrester counter, thereby ensuring that no contact point disconnection occurs in the measurement process, and improving the stability and safety of operation.
Owner:BINZHOU POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER +1

Gis

The invention relates to a GIS. The GIS comprises: a GIS cylinder; a crank arm box fixedly connected to the GIS cylinder, wherein a moving contact seat is arranged at one end, close to the GIS cylinder, of the crank arm box; a moving contact assembled in the moving contact seat in a guiding manner; a crank arm arranged in the crank arm box, wherein the crank arm is in transmission connection withthe moving contact; a contact seat insulator arranged between the moving contact seat and the crank arm box, wherein the moving contact seat is connected to the crank arm box through the contact seatinsulator so as to form insulation with the crank arm box, the moving contact seat is provided with a protruding part, and the protruding part protrudes towards the GIS cylinder, the crank arm box isprovided with a grounding terminal, and a terminal insulator is arranged between the grounding terminal and the crank arm box, the grounding terminal is provided with an outer wiring end and an innerwiring end, the outer wiring end is located outside the connecting lever box and used for being connected with a grounding wire, the inner wiring end is located inside the crank arm box, and a switching conductor is arranged between the side, facing the crank arm, of the moving contact seat and the inner wiring end so as to achieve connection between the grounding terminal and the moving contact seat.
Owner:HENAN PINGGAO ELECTRIC +2

Low-temperature fluid delivery tube connector with potential isolating function

The invention discloses a composite liquid helium and liquid nitrogen delivery tube connector with a potential isolating function, which comprises an external tube, an internal tube and a shielding tube support, wherein the external tube comprises two flanges and an epoxy isolating piece, and is sealed by a seal ring and fastened by an epoxy casing tube, an epoxy gasket and a bolt, the internal tube takes a potential isolating piece as a base, and is welded with low-temperature liquid delivery tubes at two ends, the metal tube sections of the low-temperature liquid delivery tubes and the potential isolating piece are wound by heat insulating layers, the shielding tube support adopts a square thin plate and provided with a plurality of through holes so as to lower heat conducting quantity. The composite liquid helium and liquid nitrogen delivery tube connector provided by the invention has a simple structure, can effectively insulate high and low potential during the using process, is able to adapt to various complex low-temperature liquid delivery environments, can ensure the insulating requirements of delivered liquid, is convenient to mount and stable and reliable in work, and is applicable to various low-temperature liquid delivery occasions.
Owner:INST OF PLASMA PHYSICS CHINESE ACAD OF SCI

Load-bearing compression-resisting cable for moving occasions and manufacturing method thereof

The invention relates to a cable, in particular to a load-bearing compression-resisting cable for moving occasions and a manufacturing method thereof. When insulation wire cores of the cable are cabled and twisted, aramid tensile pieces consisting of bundled aramid and rubber thickening layers are arranged in the gaps; a liner layer made of butyronitrile rubber is extruded outside the cabled and twisted insulation wire cores; the outer side of the liner layer is coated with a shielding layer formed by braiding tin-plated copper wires; a sheath layer made of chloroprene rubber is extruded outside the shielding layer; and a layer of armoured layer which is armoured by means of metal bands in an internal interlocking manner is covered outside the sheath layer. The cable can ensure that the self weight of the cable and the weight of corollary equipment in specified range can be loaded under the condition of bending at high frequency, and the damage of external tension to the cable is reduced. Meanwhile, the load-bearing compression-resisting cable can prevent the damage of other external radial pressure to the inner side of the cable, has the advantages of super softness, high tensile, easy assembly, high physical compression resistance and simple production method, and facilitates large-scale industrial production.
Owner:唐山市海丰线缆有限公司

Power electronic transformer structure

The invention relates to a power electronic transformer structure. The power electronic transformer structure comprises a support, a high-frequency transformer, a base, high-voltage modules and a low-voltage module. The high-voltage modules are respectively located at the front portion, the top portion and the rear portion of the support; the low-voltage module is located at the bottom portion ofthe support; and the high-frequency transformer is located at the middle portion of the support. The support employed by the transformer structure is an epoxy support, the support is internally provided with the high-frequency transformer, the high-voltage modules and the low-voltage module are arranged at the outer portion of the support so that the transformer structure is more compact, uniform,and the functional structure has the uniqueness and innovation;; further, the support is the epoxy support so that the problems that the epoxy resin is difficult to solidify and form after pouring and the deformation is difficult to guarantee due to the fact that the dead weight of the iron core and the coil of the high-frequency transformer is heavy are solved; and moreover, the insulation requirement of the whole structure of the power electronic transformer is guaranteed, and the yield of products is greatly improved.
Owner:GLOBAL ENERGY INTERCONNECTION RES INST CO LTD

A dust-proof and waterproof solid-sealed pole that is easy to dissipate heat and be easily demolded and its manufacturing process

The invention discloses a dustproof and waterproof type solid sealing pole with easy radiating and easy demoulding and manufacturing process. The dustproof and waterproof type solid sealing pole comprises a vacuum arc-extinguishing chamber (14). The vacuum arc-extinguishing chamber (14) is provided with an insulating shell (7). An umbrella skirt (11) is arranged in the lower insulating shell of the vacuum arc-extinguishing chamber (14) and a heat radiation shield (1) is arranged on the top. The insulating housing (7) is provided with a longitudinal first air passage (9). The inner wall of the first air passage (9) is provided with a first spiral convex rib (10). The upper end of the first air passage (9) is communicated with the interior of the radiating cover (1). The bottom of the insulating shell (7) is provided with a middle air cavity (12) connecting the umbrella skirt (11) and a second air channel (13) of the first air duct (9). The heat radiation shield (1) is provided with an inside conducting heat radiation shield and a outside air passage. The dustproof and waterproof type solid sealing pole with easy radiating and easy demoulding and manufacturing process have the advantages of good heat radiation effect, good insulation performance, easy demoulding, dustproof and waterproof.
Owner:中国振华电子集团宇光电工有限公司(国营第七七一厂)

Sand prevention work shoe

InactiveCN104432941AOvercoming protectiveOvercome comfortSolesUpperWave shapeEngineering
The invention discloses a sand prevention work shoe. The sand prevention work shoe comprises a shoe body, a shoe sole and a sand prevention inner container. The sand prevention inner container is arranged in the shoe body, the overall shoe body is wrapped by a heat insulating layer made of heat insulating materials, a shoe tongue sand prevention cover is made at the front end of the upper portion of the shoe body, a steel head matched with a shoe head in shape is arranged at the shoe head at the front end of the interior of the shoe body in a combined mode, and a buffering layer is arranged on the inner side of the steel head in a combined mode; a steel wire net interlayer and a protection interlayer are embedded into the shoe sole, and a wave-shaped dust-raising-prevention side skirt is arranged at the portion where the shoe body is connected with the shoe sole in a combined mode. By means of the sand prevention work shoe, the technical problems that a traditional sand prevention shoe is insufficient in protection performance and comfort are solved; as the shoe head structure for wrapping the whole instep is adopted at the front end of the shoe body, the requirement of workers for the capacity of protecting the feet during operation is met. Meanwhile, due to the buffering layer arranged inside the steel head in the combined mode, the toes and the instep of the workers can be prevented from being injured by crushing objects during operation; in daily use, a person can feel quite comfortable on the foot toes and the instep through the buffering layer, and the comfort is guaranteed.
Owner:TIANJIN TIANXING KESHENG LEATHER PROD

Automatic current-sharing voltage-reducing constant-current driving circuit suitable for two LED light bars

PendingCN114786301AGuaranteed working lifeTo achieve the current equalization effectCharge equalisation circuitElectric powerTransformerInductor
The invention relates to the technical field of LED light bar control, in particular to an automatic current-sharing voltage-reducing constant-current driving circuit suitable for two LED light bars, which comprises a constant-current driving module, a first power supply module, a second power supply module, a switch module, a power supply module and a balancing transformer, and is characterized in that the constant-current driving module is used for controlling the on-off of the switch module; the power supply module charges the energy storage inductors through series connection of two windings of the energy storage inductors in the first power supply module and the second power supply module, and supplies power to the two LED light bars at the same time; when the switch module is switched off, the two windings of the energy storage inductors in the first power supply module and the second power supply module discharge electricity to supply power to the two LED lamp strips respectively, and due to the action of the balancing transformer, the two windings of the energy storage inductors finish discharging at the same time, and therefore it is guaranteed that currents of the two LED lamp strips are equal.
Owner:深圳市东准电子科技有限公司

Isolation vehicle for high-voltage switch cabinet

The invention discloses an isolation vehicle for a high-voltage switch cabinet. The isolation vehicle for the high-voltage switch cabinet includes a heat radiation system and an isolation vehicle body, a support assembly bears the heat radiation system and the isolation vehicle body, the isolation vehicle body includes an insulating cylinder, a first contact assembly and a second contact assembly, the insulating cylinder is of a hollow structure, the first contact assembly and the second contact assembly are arranged on the insulating cylinder in sequence and are communicated with the inside of the insulating cylinder, the heat radiation system includes a radiator and a fan, the radiator and the blower fan are arranged at the top and the bottom of the insulating cylinder respectively, and an air outlet of the fan is opposite to the radiator, thereby enabling a heat radiation channel to be formed inside the insulating cylinder. The red copper tubular radiator is mounted on a first wire outlet base of the structure, cooling is realized through convection between the axial flow fan mounted under a second wire outlet base and the top of the insulating cylinder, and the top of a cabinet body is equipped with a fan used for ensuring timely emission of heat generated by 4000A current.
Owner:陕西宝鼎开关有限公司

Gas-insulated switchgear and gas tank thereof

The invention relates to a gas-insulated switchgear and a gas tank thereof, and the gas tank of the gas-insulated switchgear comprises a tank body, a solid-sealed polar pole is arranged in the tank body, the solid-sealed polar pole is vertically arranged, and the solid-sealed polar pole is provided with an upper wire outlet seat and a lower wire outlet seat; a lower isolation moving contact is assembled in the lower wire outlet seat along the vertical direction in a conductive sliding manner, a lower isolation static contact and a grounding static contact are arranged below the lower wire outlet seat in the box body, a lower isolation fracture is formed between the lower isolation moving contact and the lower isolation static contact, and the grounding static contact is in conductive connection with the lower isolation static contact; the bottom of the box body is provided with an incoming and outgoing line sleeve, the incoming and outgoing line sleeve is connected with a bus, and one of the grounding static contact and the lower isolation static contact is conductively and fixedly connected with the bus; a contact frame is further arranged in the box body, a grounding moving contact is assembled on the contact frame in a reciprocating motion mode, and a grounding fracture is formed between the grounding moving contact and the grounding static contact. Therefore, even if the transmission precision is low, the simultaneous insulation of the isolation fracture and the grounding fracture can be ensured, and the insulation requirement of the gas-insulated switchgear is further ensured.
Owner:PINGGAO GRP
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