57results about How to "Guaranteed current carrying capacity" patented technology

The invention relates to a whitening ultraviolet-proof double-shield instrument cable for ships and a manufacturing method thereof. The cable is characterized in that a whitening ultraviolet-proof ethylene-propylene rubber insulation layer is extruded at the periphery of a tin-plated annealed stranded copper conductor to form an insulation wire core; every two insulation wire cores are twisted to form twisted wire pairs; each twisted wire pair is wrapped with a wire core copper foil polyester composite tape shielding layer at the periphery; the wire core copper foil polyester composite tape shielding layers are each wrapped with a wire core polyester tape at the periphery to form a pair-twist group; all the pair-twist groups are stranded to the right at 16-24 times of stranding lay ratio to form a cable core; the cable core is wrapped with a cable core copper foil polyester composite tape shielding layer at the periphery; the cable core copper foil polyester composite tape shielding layer is wrapped with a cable core polyester tape at the periphery; an inner sheath is extruded at the periphery of the cable core polyester tape; the inner sheath is coated with a copper alloy wire weaving armor layer at the periphery; and an outer sheath is extruded at the periphery of the copper alloy wire weaving armor layer. The insulation layer of the double-shield cable is white in color, good in mechanical property, excellent in anti-ultraviolet irradiation and anti-aging performance, and long in service life.

The invention relates to a tower for a wind turbine and to a cable guide for a tower of a wind turbine, wherein a machine housing for the wind turbine is arranged on the tower such that it can rotate by means of the azimuth bearing about a vertical axis which runs in the longitudinal direction of the tower. Current-carrying cables, such as power cables, are routed in the tower of the wind turbine out of the machine housing from electrical components to the ground. These comprise a multiplicity of cables, for example a plurality of cables for electrically carrying individual phases of alternating current, in particular three-phase alternating current, cables for ground conductors and/or signal and control cables. One object of the invention is to specify improved routing of the cables which, inter alia, avoids the disadvantages of the prior art.; One particular aim is to ensure that the current load capacity of the cables is ensured, and/or that wear between the cables is reduced. According to the invention, the object is achieved by the features of the main claim 1, by arranging a guide apparatus effectively between the cable loom and the tower, in the tower, for at least partial fixing of the area of the cable loom to the tower, wherein the guide apparatus has means for supporting the lower area of the cable loom in a radial direction, and for support with respect to the tower in a circumferential direction. In this case, the guide apparatus is designed such that the lower area of the cable loom is mounted such that it can move in the axial direction with respect to the tower, but is essentially fixed with respect to the tower in the circumferential and radial directions.

The invention discloses an expansion joint for a conductive rail. The expansion joint for the conductive rail comprises a left conductive rail, a middle rail and a right conductive rail, wherein the right end face of the left conductive rail, the two end faces of the middle rail and the left end face of the right conductive rail are mutually-parallel inclined planes; the expansion joint further comprises a conductive plate and wires; the conductive plate is provided with a boss part fixedly connected to the bottom surface of the middle rail; the left end and the right end of the conductive plate are suspended; the wires consist of a left wire and a right wire; one end of the left wire is connected to the bottom surface of the left conductive rail, and the other end is connected to the suspended left end of the conductive plate; one end of the right wire is connected to the bottom of the right conductive rail, and the other end is connected to the suspended right end of the conductive plate; the wires keep in a relax state after being connected; and the expansion joint further comprises a copper-aluminum transition plate. The expansion joint provided by the invention has a simple structure, is excellent in pickproof and shock-resistant performance, can effectively ensure requirements of follow current and current carrying on the expansion joint, and can ensure constant and reliable current capacity.

The invention relates to a marine independent screening instrument cable capable of whitening and resisting ultraviolet and a manufacturing method thereof. Whitening and ultraviolet-resisting ethylene propylene rubber insulation layers are extruded at the peripheries of tin-plating annealing stranded copper conductors to form insulation wire cores, every two insulation wire cores are stranded to form a stranded wire pair, a copper foil polyester composite belt screening layer is lapped at the periphery of each group of stranded wire pair, copper foil surfaces are inward, tin-plating stranded steel drainage wires are arranged on the inner sides of the copper foil polyester composite belt screening layers, penetrate through the full length of each stranded pair and cling together with the copper foil surfaces; and a polyester belt is lapped at the periphery of each copper foil polyester composite belt screening layer to form a stranded group; and the all stranded groups are stranded rightwards according to the 16-24 times of stranded node ratio to form a cable core, an inner protecting bush is extruded at the periphery of the cable core, a copper alloy wire knitting armor layer covers the periphery of the inner protecting bush, and an outer protecting bush is extruded at the periphery of the copper alloy wire knitting armor layer. The independent screening instrument cable has the advantages that the color of an insulation layer is white, the mechanical property is good, the performance of resisting aging caused by ultraviolet light is excellent, and the service life is long.

The invention relates to an insulating tube type busbar and a manufacturing method thereof in the technical field of high voltage distribution. The insulating tube type busbar comprises: an insulatingtube type busbar conductor, an internal conductive pipe or a plurality of leads, radiating holes, radiating spaces inside the pipe and end plate open pores, wherein the insulating tube type busbar conductor is arranged at the outermost layer and is internally provided with the internal conductive pipe; and the end part of the insulating tube type busbar conductor is provided with the radiating holes. By utilizing the hollow insulating tube type busbar conductor, a conductor is added in the insulating tube type busbar conductor, the hollow conductor of the insulating tube type busbar is internally stuffed with the conductive pipe, or a plurality of corresponding leads and presses the end part thereof into a whole; radiating and temperature reduction measures are taken, and the end part ofthe insulating busbar is provided with radiating holes, therefore, the current-carrying capacity can be increased without increasing the external diameter size of the busbar, thus reducing the using amount of insulation materials and lowering cost.

The invention relates to a marine integral screening instrument cable capable of whitening and resisting ultraviolet and a manufacturing method thereof. Whitening and ultraviolet-resisting ethylene propylene rubber insulation layers are extruded at the peripheries of tin-plating annealing stranded copper conductors to form insulation wire cores, every two insulation wire cores are stranded to form a stranded wire pair, the all stranded wire pairs are stranded rightwards according to the 16-24 times of stranded node ratio to form a cable core, a copper foil polyester composite belt screening layer is lapped at the periphery of the cable core, a copper foil surface is inward, a tin-plating stranded steel drainage wire is arranged on the inner side of the copper foil polyester composite belt screening layer, penetrates through the full length of each stranded pair and clings together with the copper foil surface; and a polyester belt is lapped at the periphery of the copper foil polyester composite belt screening layer, an inner protecting bush is extruded at the periphery of the polyester belt, a copper alloy wire knitting armor layer covers the periphery of the inner protecting bush, and an outer protecting bush is extruded at the periphery of the copper alloy wire knitting armor layer. The integral screening instrument cable has the advantages that the color of an insulation layer is white, the mechanical property is good, the performance of resisting aging caused by ultraviolet light is excellent, and the service life is long.

The invention discloses a diamond-based multi-channel barrier regulation and control field-effect transistor and a preparation method thereof. The field-effect transistor comprises a diamond substrate, and is characterized in that the diamond substrate is provided with a single crystal diamond epitaxial film; the single crystal diamond epitaxial film is provided with mesa regions; the single crystal diamond epitaxial film is provided with etching regions; each mesa region is internally provided with a multi-channel trench region and the etching region; each multi-channel trench region includesa two-dimensional hole gas conductive layer; each etching region includes an oxygen, fluorine or nitrogen terminal; a source electrode and a drain electrode are located at two sides of the mesa regions; and a grid electrode is arranged in the multi-channel trench regions and the etching regions between the source electrode and the drain electrode, and the grid electrode is arranged in the etchingregions on the single crystal diamond epitaxial film at the same time. The transistor device disclosed by the invention can obtain normally-closed characteristics without damaging the performance ofthe conductive trenches. Meanwhile, the multi-channel structure also can ensure the current passing ability between the source and the drain of the device.

The invention relates to a whitening ultraviolet-proof ethylene-propylene rubber insulation control cable for ships and a manufacturing method thereof. The cable is characterized in that a whitening ultraviolet-proof ethylene-propylene rubber insulation layer is extruded at the periphery of a 0.35-2.5mm<2> tin-plated annealed stranded copper conductor to form an insulation wire core; a plurality of insulation wire cores are stranded to the right to form a cable core; and then an inner lining layer is extruded, a copper alloy wire weaving armor layer is coated, and an outer sheath is extruded successively. The insulation layer is prepared from the following raw material components: 12 parts of Keltan5508, 8 parts of Keltan21, 0.4-0.6 part of TAIC, 0.5-0.8 part of DCP (Dicumyl Peroxide), 0.3 -0.6 part of Ager MB, 0.1-0.2 parts of anti-aging agent 2246, 0.8-1.2 parts of oxidation zinc, 0.1-0.3 parts of stearic acid, 1-1.5 parts of rutile-type titanium dioxide, 10-12 parts of lightweight calcium carbonate, 10-12 parts of ultrafine talcum powder, 2-3 parts of 38# cylinder oil, 2-3 parts of vapor-phase-method hydrated silica, 0.05-0.1 parts of an ultraviolet absorbent UV-326, and 0.1-0.3 parts of coupling agent A-174. The insulation layer of the cable is white in color, good in mechanical property, excellent in anti-ultraviolet irradiation and anti-aging performance, and long in service life.

The invention discloses a copper and aluminium transition binding post comprising an aluminium part and a copper part, wherein one end of the aluminium part is connected with a conductor at the bottom end of a cable, the other end is provided with an extension section extending outward, and the diameter size of the solid extension section is smaller than that of the aluminium part; and one end of the copper part is provided with a horizontal extension section having the same size with the extension section of the aluminium part, the other end is provided with a U-shaped bottom plate part, the extension section of the aluminium part and the horizontal extension section of the copper part form an integral neck part, and the aluminium part and the copper part are combined at the cross section part of the neck part. The properties of the copper and aluminium transition binding post meet the requirements for industrial A class connecting hardware. Due to the low grade design of the copper and aluminium binding post, the size of the bottom plate part is reduced to a full extent, and meanwhile, the cross section at the combination part of the copper part and the aluminium part is increased. The connection properties of the product are improved under the condition of ensuring current carrying capability, and the connection of a circuit breaker and a bus bar is facilitated.

The invention relates to a basin type insulator for high-current electric power transmission equipment. The basin type insulator at least comprises a tube type flange, a connecting conductor and an insulation casting body, and is characterized in that the insulation casting body is in an annular shape, the connecting conductor is arranged in a hole of the annular insulation casting body and is in bilateral symmetry by using the annular insulation casting body as the center, the tube type flange is arranged outside the annular insulation casting body, the upper and lower surfaces, near the excircle part, of the annular insulation casting body are respectively and correspondingly provided with first annular grooves, a first O-shaped sealing ring is arranged in each first groove, the upper and lower surfaces, near the inner circle part, of the tube type flange are respectively and correspondingly provided with second annular grooves, a second O-shaped sealing ring is arranged in each second groove, two ends of the connecting conductor are respectively provided with a plurality of annular conducting grooves, and a spring contact is sheathed on each annular conducting groove. The basin type insulator has the advantages that the problem of usage occasion limitation of the traditional basin type insulator is solved, and in addition, the sealing performance is good.

An embodiment of the invention discloses a printed circuit board, a tinning line thereof and a tinning method thereof, relating to the microelectronic technology field, and welding looseness and tinning unevenness caused by soldering tin mobility can be avoided. The printed circuit board tinning line comprises a plurality of tinning strips which are uniformly distributed. The tinning strips are mutually independent and do no contact each other. The printed circuit board, the tinning line and the tinning method are applied to printing of the printed circuit board.

The invention discloses a high-overload small-volume shunting type manual maintenance switch which comprises a socket and a plug. The socket comprises a socket shell. A slot component is installed onthe socket shell. The upper side of the slot component is connected with a tail protective cover through a buckling cover. The plug comprises a lower cover. The lower cover is provided with a pluggingpiece cooperating with the slot component. The lower part of the plugging piece is connected with the plug shell. The plug shell is provided with a handle. A high-voltage interlocking component is arranged between the socket and the plug. The problem in the prior art that the current carrying capacity of the manual maintenance switch is insufficient can be solved, and the manual maintenance switch has small volume, low cost, high reliability and wide application range.

The invention relates to a whitening ultraviolet-proof ethylene-propylene rubber insulation power cable for ships and a manufacturing method thereof. The cable is characterized in that a whitening ultraviolet-proof ethylene-propylene rubber insulation layer is extruded at the periphery of a tin-plated annealed stranded copper conductor to form an insulation wire core; a plurality of insulation wire cores are stranded to the right to form a cable core; and then an inner lining layer is extruded, a copper alloy wire weaving armor layer is coated, and an outer sheath is extruded successively. The insulation layer is prepared from the following raw material components: 12 parts of Keltan5508, 8 parts of Keltan21, 0.4-0.6 parts of TAIC, 0.5-0.8 parts of DCP (Dicumyl Peroxide), 0.3 -0.6 part of Ager MB, 0.1-0.2 parts of anti-aging agent 2246, 0.8-1.2 parts of oxidation zinc, 0.1-0.3 parts of stearic acid; 1-1.5 parts of a rutile-type titanium dioxide, 10-12 parts of lightweight calcium carbonate, 10-12 parts of ultrafine talcum powder, 2-3 parts of 38# cylinder oil, 2-3 parts of vapor-phase-method hydrated silica, 0.05-0.1 parts of ultraviolet absorbent UV-326, and 0.1-0.3 parts of coupling agent A-174. The insulation layer of the cable is white in color, good in mechanical property, excellent in anti-ultraviolet irradiation and anti-aging performance, and long in service life.

The invention discloses a cable current-carrying capacity evaluation method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining the detailed information of the temperature highest point position of the surface of a cable, the detailed information comprises cable surface temperature information, cable actual structure at the highest point position, surrounding laying environment information and cable real-time load data corresponding to the temperature time sequence record, and establishing a temperature field finite element model according to the cable actual structure and the surrounding laying environment information; inputting the real-time load data of the cable into the temperature field finite element model to obtain a cable surface temperature finite element calculation result and a cable conductor temperature calculation result, and performing evaluation based on the cable surface temperature finite element calculation result, the cable conductor temperature calculation result and the cable surface temperature information in combination with a preset threshold value to obtain the cable surface temperature. And obtaining a cable line current-carrying capacity evaluation result. According to the method for evaluating the current-carrying capacity of the cable, it is guaranteed that the current-carrying capacity of a power transmission cable line is fully exerted.

The invention provides a battery cell of a coiled lithium ion battery. The battery cell is made by overlaying and winding two layers of pole pieces and two layers of diaphragms alternatively, whereineach pole piece comprises a pole piece body and a plurality of leads; the battery cell body is formed by coiling the pole piece bodies; an electrode is formed after the leads are overlaid in a staggered way; the total width of the electrode is D. Compared with the prior art, the battery cell has the beneficial effects that the leads are molded by coiling with a coiling needle after mold cutting, and different circles of leads are not aligned completely in a staggered way, so that the current carrying ability of the leads is ensured, and convenience can be brought to welding.

The invention relates to a whitening ultraviolet-proof non-shield instrument cable for ships and a manufacturing method thereof. The cable is characterized in that a whitening ultraviolet-proof ethylene-propylene rubber insulation layer is extruded at the periphery of a 0.35-2.5mm<2> tin-plated annealed stranded copper conductor to form an insulation wire core; every two insulation wire cores are twisted to form twisted groups; all the twisted groups are stranded to the right to form a cable core; and then an inner lining layer is extruded, a copper alloy wire weaving armor layer is coated, and an outer sheath is extruded successively. The insulation layer is prepared from the following raw material components: 12 parts of Keltan5508, 8 parts of Keltan21, 0.4-0.6 parts of TAIC, 0.5-0.8 parts of DCP (Dicumyl Peroxide), 0.3 -0.6 parts of Ager MB, 0.1-0.2 parts of an anti-aging agent 2246, 0.8-1.2 parts of oxidation zinc, 0.1-0.3 parts of stearic acid, 1-1.5 parts of a rutile-type titanium dioxide, 10-12 parts of lightweight calcium carbonate, 10-12 parts of ultrafine talcum powder, 2-3 parts of 38# cylinder oil, 2-3 parts of vapor-phase-method hydrated silica, 0.05-0.1 parts of UV-326, and 0.1-0.3 parts of A-174. The insulation layer of the cable is white in color, good in mechanical property, excellent in anti-ultraviolet irradiation and anti-aging performance, and long in service life.

The invention discloses a diamond-based field effect transistor with a low work function conductive gate and a preparation method thereof. The diamond-based field effect transistor comprises a diamondsubstrate, wherein a single crystal diamond epitaxial film is provided on the diamond substrate; a source and a drain are provided on the single crystal diamond epitaxial film; a conductive channel is formed on the single crystal diamond epitaxial film between the source and the drain; a low work function conductive gate layer is disposed on the conductive channel, and a gate electrode is disposed on the low work function conductive gate layer, wherein the low work function conductive gate layer is in contact with the conductive channel to generate a barrier height that reaches a predetermined threshold for pinching off the channel. The diamond-based field effect transistor provided by the invention utilizes a space charge region generated by a Schottky barrier to completely deplete the two-dimensional hole gas generated on the surface of the hydrogen terminal diamond, and pinch-off the channel to realize the characteristics of a normally-off device, which caused no damage to the performance of the conductive channel while ensuring the current passing capability between the source and drain of the device.

The invention relates to a high-stability sliding switch. The switch comprises a base and an upper cover, a sliding block is slidably connected into the base, a first baffle and a second baffle whichare opposite to each other and arranged in the sliding direction of the sliding block are perpendicularly connected to the bottom of the sliding block, and a supporting plate extending towards the second baffle is connected to the lower end of the first baffle. The length of the supporting plate is smaller than the distance between the first baffle and the second baffle, a movable contact piece and a spring are clamped between the first baffle and the second baffle, the movable contact piece is attached to the first baffle under the elastic action of the spring, the supporting plate is supported below the movable contact piece and the spring, and the two ends of the movable contact piece extend out of the first baffle and are provided with movable contacts. Two static contact pieces are arranged in the base, static contacts in one-to-one correspondence with the two movable contacts are arranged on the two static contact pieces respectively, the spring and the static contacts are arranged on the two sides of the movable contact pieces respectively, and when the sliding block slides to the static contacts, the movable contacts abut against the static contacts and compress the spring,and the switch is closed and slides.

The invention relates to a power taking device for a power supply, and particularly relates to a power taking device for a dual-power switching power supply and an operation method thereof, which belong to the field of electrical switches. The device comprises a static contact assembly and a moving contact assembly, wherein the moving contact assembly is inserted into the static contact assembly.The requirements of power consumption continuity and reliability by a user can be met.