86results about "Single tube conductors" patented technology

Provided are a photomixer module and a method of generating a terahertz wave. The photomixer module includes a semiconductor optical amplifier amplifying incident laser light and a photomixer that is excited by the amplified laser light to generate a continuous terahertz wave. The photomixer is formed as a single module together with the semiconductor optical amplifier.

The invention provides an aluminum alloy tubular conductor and a production process thereof. The aluminum alloy tubular conductor is prepared with Al-Mg-Si-Fe-Cu-Zr-RE alloy. The aluminum alloy tubular conductor adopts the Al-Mg-Si-Fe-Cu-Zr-RE alloy, the tensile strength and the use temperature of the aluminum alloy after being added with Cu, Fe, Zr and RE are increased, thereby the performance of the aluminum alloy tubular conductor is greatly improved. The production process of the aluminum alloy tubular conductor adopts a thermomechanical processing process, controls the cold processing rate after quenching within a certain range, thereby not only greatly improving the tensile strength of the product, but also facilitating the improvement of the recrystallization temperature of the alloy, so as to improve the heat resistant performance of the alloy.

The invention relates to a high strength heat-resistant aluminum alloy tubular bus, in particular to a tubular bus used for distribution device of high-voltage and supervoltage power transmission and transformation. The invention is characterized in that the tubular bus is made of Al-Mg-Si-ZrO3 alloy, the composition of the alloy: Si 0.30 to 0.50, Fe 0.35, Cu 0.10, Mn0.10, Mg 0.50 to 0.75, Cr 0.10, Zn0.10, Ti 0.10 and Zr 0.20 to 0.30; impurity is less than or equal to 1.5; the rest is Al. The invention has the advantages that the alloy recrystallization temperature is increased by 80 to 100 degrees since Zr is added in Al-Mg-Si alloy, enabling high working temperature of tubular bus up to 200 DEG C; the heat-resistant performance and current capacity of the bus as well as safety and reliability of the transmission and transformation system are improved, while the line loss during power transmission is reduced; the requirements on high-voltage and supervoltage power transmission and transformation can be met due to high strength, good conductivity, stable mechanical property and high current capacity at high temperature and ability to keep mechanical property of conductor in case of transient short circuit; the alloy used for the tubular bus can be used to produce other conductor material.

A multilayer elastic tube having electric property, the multilayer elastic tube including: an elastic core having a tube shape; and an elastic rubber coating layer adhering to an inner surface of the core, the elastic rubber coating layer having at least one electric property of electric conductivity, piezoelectricity, and electric wave absorptiveness. The elastic rubber coating layer is formed by curing liquid elastic rubber having the electric property and adhering to the inner surface of the core, and has a closed loop shape to improve the electric property.

The invention relates to a circular shielding insulating bus, which has the advantages of high carrying capacity, good heat dissipation, low temperature rise, strong electric insulation performance, no environmental disturbance and high reliability. The circular shielding insulating bus comprises a circular conductor and an outer layer sheath, wherein a plurality of insulating shielding layers are arranged between the circular conductor and the outer layer sheath and consist of insulating layers and shielding layers; each insulating layer comprises two polytetrafluoroethylene layers and a thermal shrinkage sheath from inside to outside; and silicone oil is uniformly brushed between the polytetrafluoroethylene and the thermal shrinkage sheath.

The invention provides a processing method for a conductor pipe in an improved radio frequency cable. The conductor pipe made by the method is of low dead weight, easy to construct and of low cost, can efficiently reduce the cost of the industry of cable and end users, and is of good communication effect. The invention is characterized in that, the method comprises the following procedures: de-oiling, cleaning, polishing by nitric acid, soaking zinc, de-zincing by nitric acid, soaking zinc, preparing pyrophosphate, plating copper, plating bright copper, passivating, cleaning with heated de-ionized water and drying.

A sealing technique is established in which a seal can be easily formed and which is excellent in reliability and a heat cycle property in a high temperature region of 800 DEG C or higher, so as to provide a composite body preferably used for a device for producing pure oxygen, oxygen-rich air, and the like, a membrane reactor represented by that for partial oxidation of a hydrocarbon gas, a solid oxide fuel cell, an oxygen purification device, a heat exchanger, or the like. The present invention makes it possible to increase a possibility of practical use in a wide area which has been delayed in development owing to a bottleneck of improvement in a sealing property. Particularly, its application to the device for producing pure oxygen, oxygen-rich air, or the like, the membrane reactor represented by that for partial oxidation of the hydrocarbon gas, the solid oxide fuel cell, the oxygen purification device, the heat exchanger, or the like can greatly contribute to acceleration of the development.

A connection pin comprising a first contact part that is adapted for mounting in a hole in a printed circuit board (PCB), and a second contact part. The first contact part comprises a cavity surrounded by a wall, and the wall has at least one opening. At least one solder preform is located in the cavity. A converter assembly comprising a first PCB, and having at least one hole in which a connection pin is mounted. The first PCB with the connection pin is then mounted on a second PCB. Further is described a method for manufacturing a connection pin comprising: providing a connection pin with a cavity in a contact part of the pin, and providing at least one opening in a wall of the cavity, preparing at least one solder preform, and inserting at least one solder preform into the cavity.

The present invention provides a high frequency electric wire in which, first, the high frequency alternating current resistance can be reduced to decrease a Joule heat loss, thereby improving the frequency characteristics, and, second, the first point can be excellently realized in terms of cost performance. A high frequency electric wire 6 is provided in such a manner that a large number of wires 7 are bundled, twisted and insulated with an outer sheath S. Each wire 7 has an extra-fine hollow pipe structure of a capillary shape. The wire 7 is provided to make its hollow section 8 with the extra-fine hollow pipe structure an air cavity 9 or to cause its hollow section 8 to house an insulating material 10. In the latter case, the wire 7 is provided to cause a metal conductor to adhere to the outer periphery of an extra-fine insulating yarn which serves as the insulating material 10 by plating or vapor- deposition. The electric wire 6 is used as a circuit cable or a coil in a non-contact power feeding device which supplies power based on a mutual induction action of the electromagnetic induction. In this manner, the electric wire 6 fulfills its function to suppress and reduce an increase of the alternating current resistance due to a high frequency alternating current.

In a conductor of a high voltage electrical apparatus, the conductor being placed in a vessel filled with insulating gas together with an electrical apparatus, the conductor is configured by a polygonal tubular conductor, and an opening portion which makes the insulating gas flowing in from an end portion of the polygonal tubular conductor flow out is formed in at least one surface of the polygonal tubular conductor. This aims to obtain the conductor of the high voltage electrical apparatus, the conductor being capable of achieving reduction in cost and high reliability.

The present invention relates to a tubular conductive piece and a conductive device by employing the same. The tubular conductive piece comprises a tube body, and two ends of the tube body is provided with blocking boards to block up inner holes of the tube body to separate the inner holes of the tube body from the internal air chamber of the tubular conductive piece assembly device. The blocking boards are configured to block up the inner hole ports at two ends of the tube body to allow the inner holes of the tube body to form an independent sealing space and separate the inner holes from the internal air chamber of the tubular conductive piece assembly device so as to prevent the non-cleaning residual metal foreign matters and moisture in the tubular conductive piece and the metal foreign matters in the manufacturing process from being mixed into the insulation medium of the air chamber to cause discharge, omit the process of cleaning the inner wall of the tubular conductive piece, reduce the labor intensity, shorten the product assembling period and greatly improve the work efficiency.

The invention discloses a power cable. The power cable comprises a supporting core, single-core bodies and an insulating layer, wherein the supporting core and the single-core bodies are located in the insulating layer, the supporting core is located in the center of the insulating layer, the number of the single-core bodies is larger than one, and the single-core bodies are circumferentially distributed in layers in an annular cavity formed by the supporting core and the insulating layer; each single-core body comprises a hollow conducting layer, insulating medium filler and an insulating medium protective sleeve, the insulating medium filler is arranged in the hollow conducting layer, wrinkle-shaped texture is arranged on the periphery of the insulating medium protective sleeve, an inner sheath is arranged outside the insulating layer, a refractory layer is arranged outside the inner sheath, a steel wire armoring layer is arranged outside the refractory layer in a single-strand spirally twisted mode and is made of round galvanized steel wires, and an outer sheath is arranged outside the steel wire armoring layer. According to the power cable, the thermal shrinkage problem of the cable can be effectively solved, and meanwhile mechanical damage during underground construction and damage of underground animals can be prevented.

The invention discloses a low-resistivity high-strength aluminum alloy conductive tube. The low-resistivity high-strength aluminum alloy conductive tube comprises, by mass, 0.50% -0.55% of Si, 0.15% of Fe, 0.01% of Cu, 0.01% of Mn, 0.52%-0.58% of Mg, 0.01% of Cr, 0.01% of Zn, 0.02% of Ti, not greater than 0.05% of Zr, not greater than 0.05% of mixed rare earth Re, less than 0.01% of Pb, not greater than 0.05% of B, not greater than 0.05% of V and the balance Al, wherein the total content of Zr, Re, Pb, B and V is less than or equal to 0.15%; and when the total content of Mn, V, Cr and Ti is lower than 0.012%, the addition amount of B is 0; and when the total content of Mn, V, Cr and Ti exceeds 0.012%, the addition amount of B is 1.25-1.5 times the stoichiometric number of B needed by a boron compound formed by Mn, V, Cr, Ti and B. According to the low-resistivity high-strength aluminum alloy conductive tube, the content of magnesium and silicon is strictly controlled, the content of other impurity elements is reduced, and the conductivity and performance of the tube are improved through standard limitation of the subsequent extrusion, quenching, stretching, aging and other processes.

The invention relates to the field of power generation, transmission, transformation and distribution devices of power systems, in particular to a dry overall shield insulating tubular bus which comprises a tubular conductive core. A first semi-conductive shield layer, an insulating layer, a second semi-conductive shield layer, a grounding shield layer and an outer protection layer sequentially wrap the outside of the conductive core from inside to outside, wherein the insulating layer is made of organic silicone rubber. The tubular conductive core is high in capacity and small in size, the insulating layer made of the organic silicone rubber has a fine electrical insulating property, dielectric loss, voltage resistance, arc resistance, corona resistance, volume resistivity, surface resistivity and the like of the insulating layer are among the best in insulating materials, the electrical performance of the insulating layer is less affected by temperature and frequency, and the organic silicone rubber insulating layer has excellent heat resistance and water repellency, has a certain flexibility after curing, can be bent and can meet use requirements under different conditions.

The invention provides a generatrix conductor. The generatrix conductor is characterized in that a body oxide layer of copper and an aluminum alloy (the oxide layer is thin, and resistance is small) is retained as an isolation protective layer. Electrochemical reaction can be prevented. The copper and the aluminum alloy (such as aluminum magnesium alloy and rare earth aluminum alloy) are matched in a lap joint mode. By splitting of the isolation protective layer, the copper and the aluminum alloy form two conductors which are relatively independent but equal in electric potential. Electromagnetic interference is not generated between the two conductors. Current density distribution uniformity effect is greatly improved. The generatrix conductor is suitable for utilizing in generatrixes of various voltage classes and the conductor of a sleeve tube.

An assembled wire has a substantially rectangular cross section, and is formed by assembling a plurality of strands. Each strand has a conductor portion and a strand insulating layer covering the conductor portion. At least a part of the assembled plurality of strands in the longitudinal direction is covered with an outer insulating layer. The strand is formed as follows. First, the strand insulating layer is coated on the outer periphery of the conductor portion. At this time, a large number of voids are formed in a resin constituting the strand insulating layer. From this state, the strand is formed, for example, by collapsing the strand insulating layer by heating and pressurizing. At this time, it is possible to uniformly collapse the strand insulating layer by crushing the internal voids. Therefore, the voids in the strand are crushed and flattened in the thickness direction of the strand insulating layer over the entire periphery.

The invention provides a simulation cable for a cable accessory test and a method for testing cable accessories. The simulation cable includes a simulation cable body. The simulation cable body consists sequentially from inside to outside of a conductor, an insulating protective layer and a shielding layer. The conductor of the simulation cable body is provided with a ventilation channel at the central portion. The simulation cable for the cable accessory test includes a first simulation cable component and a second simulation cable component. The first simulation component includes a first simulation component body and a male connector. The second simulation cable component includes a second simulation cable component body and a female connector matching the male connector. The male connector is provided with a male connector gas channel and a male connector gas outlet. The female connector is provided with a female connector gas channel and a female connector gas outlet. With the technical scheme of the invention, the same structural function of an actual cable can be gained, the easy assembly and disassembly for product testing are also realized, the efficiency of a product predelivery test is improved and the manufacturing cost is low.