39results about How to "Guaranteed insulation reliability" patented technology

[Problem] To provide a high heat dissipation sheet that enables electrical insulation properties while also making possible a simple construction method. [Solution] In the present invention, short fibers with electrical insulation properties and high heat dissipation properties are electrostatically flocked at high density onto a base material coated with adhesive, under conditions that allow for high density electrostatic flocking, the erect short fibers are adhered and affixed, binder resin is impregnated and is hardened, and subsequently one surface of the sheet is polished so that the insulating and highly-thermally-conductive fibers penetrate and are arrayed at high density in the direction of the sheet thickness. As a result, a heat dissipation sheet is formed in which the fibers protrude from one surface while the opposite surface is made smooth so that heat from a heat generating body can be quickly absorbed by the opposite surface and quickly dissipated into the air by the fiber protrusion surface.

The present invention addresses the problem of providing a heat-conductive sheet having excellent insulation properties and thermal anisotropy and also having high heat-dissipating properties. An insulating and heat-conductive sheet characterized by comprising insulating and highly heat-conductive fibers that penetrate in the thickness direction and a binder resin, wherein the penetration density of the insulating and highly heat-conductive fibers that penetrate in the thickness direction is 6% or more, the ratio of the thermal resistivity in the thickness direction to the thermal resistivity in the planar direction is 2 or more, and the initial dielectric breakdown strength is 20 kV / mm or more.

The invention belongs to the field of oil production equipment in oilfields, and in particular relates to an electrically heated oil delivery pipe. It includes the oil pipe body and the coupling assembly, and two adjacent oil pipe bodies are connected through the coupling assembly; the oil pipe body includes the base layer made of carbon steel and the inner lining layer made of stainless steel, and the inner side of the base layer is processed with two There are two spiral grooves of the same size that do not intersect with each other. Each of the two spiral grooves contains an electric heating cable. The two electric heating cables spirally coil along the inner wall of the base layer and extend to both ends of the base layer. Each end is connected with a connection terminal, and the connection terminal is fixed on the end surface of the base layer. The invention can make the heat tracing installation and construction of the oil pipe simpler by embedding electric heating cables inside the oil pipe, and effectively improve the heat tracing effect at the same time.

The embodiment of the invention discloses an ADN based single-component thruster adopting low-temperature plasma concerted catalysis. The ADN based single-component thruster comprises a spouting section, an ionization section, a catalysis section and a combustion chamber which are coaxially connected sequentially, wherein the two ends of the spouting section and the two ends of the ionization section are pressed by a front flange plate and a middle flange plate; an integrated structure formed by the catalysis section and the combustion chamber and the ionization section are pressed by the middle flange plate and a rear flange plate; the spouting section comprises the front flange plate, a front insulator and an anode chassis as well as gas and liquid supply tubes separately used for providing an ADN liquid propellant and gas; the ionization section comprises a cylindrical anode, a middle insulator, a barrel-shaped cathode, a rear insulator and the middle flange plate which are sequentially connected to the anode chassis; the middle flange plate and the front flange plate are matched and pressed through a locking bolt; the catalysis section comprises a rear flange plate and a catalysis bed; and the combustion chamber comprises an optical test window and a reserved sensor jointing base. The AND based single-component thruster has various ignition ways, and is of great significance in completely converting an existing catalysis dissociation ignition way.

The invention discloses a multilayer winding and a winding method thereof. In the process that the multilayer winding is embedded into an iron core, only the straight line edge is embedded into the iron core, the first arc edge and the second arc edge are not embedded into the iron core, in the scheme, a wire changes the position on the first arc edge, the first arc edge with wire turns not arranged neatly is not embedded into the iron core, and after winding of the multilayer winding is completed, it can be guaranteed that the structures and sizes of the two straight line structures of the winding are consistent, wire turn arrangement is neat, the size meets the tolerance requirement, the difficulty of the winding embedded into the iron core is lowered, damage caused by the iron core to insulating paintwork can be effectively avoided, and insulating reliability of use of the multilayer winding is guaranteed.

The invention discloses a super-high-voltage vacuum insulation device. A vacuum chamber is divided into a first vacuum chamber and a second vacuum chamber; one end of the first vacuum chamber is communicated with one end of the second vacuum chamber; the other end of the first vacuum chamber is provided with a grounding end interface; the other end of the second vacuum chamber is provided with a high-voltage end interface; a grounding wire is connected into the first vacuum chamber; a high-voltage wire is connected into the second vacuum chamber; the first vacuum chamber, the second vacuum chamber, the grounding end interface, the high-voltage end interface and the high-voltage wire are all made of an insulation material; and in the second vacuum chamber, the high-voltage wire is provided with an insulation coating corresponding to the inner wall of the second vacuum chamber. Thus, high voltage can be effectively prevented from generating electric arcs in the insulation device, and the insulation performance and service life of the insulation device can be effectively ensured.

Large-diameter part 16 is formed at the axial-middle part of rotary shaft 15 that rotates driven by operating device. Insulated operating rod 14, the distal end of which makes move in the form of a segment of a circle effected by the rotation of rotary shaft 15, is formed integrally using filler-filled resin over large-diameter part 16 of rotary shaft 15 by cast so that the large-diameter part 15 is embedded into one end of insulated operating rod 14. The contact and connection between insulated operating rod 14 and moving rod 13 is given such sliding surface 21 as is formed for example in an elliptical shape so that the contact occur always at almost one-point on the axis line of the moving rod 13.

The invention discloses a multiple parallel-winding wire concentrator for wire winding, comprising a machine frame, supporting plates and rollers. The supporting plates are fixed at the middle part of the machine frame, a first roller and a second roller are arranged in parallel in front of the machine frame, the left and right ends of the first roller and the second roller are crossed on the supporting plates, the first roller is located right above the second roller, the first roller and the second roller form an upper roller set and a lower roller set, and a gap is arranged between the first roller and the second roller; a third roller and a fourth roller are vertically arranged with the machine frame, are located at the rear of the first roller and the second roller after penetrating through the machine frame, and are arranged between the two supporting plates; the third roller is located at the left side of the fourth roller, the third roller and the fourth roller form a left roller set and a right roller set, and a gap is arranged between the third roller and the fourth roller. A plane formed by shaft axes of the third roller and the fourth roller is parallel to that formed by the shaft axes of the first roller and the second roller. With simple structure and convenient installation, the wire concentrator can concentrate a plurality of widely-dispersed lacquered wires into a group of wire bundles without any damage.

A conducting particle comprises a center insulation particle, conductive microparicles, a nickel layer, a metal coating layer, first insulation particles and second insulation particles. The center insulation particle is made of an organic insulation material. The conductive microparicles are dispersed in the center insulation particle. The center insulation particle is covered with the nickel layer. The nickel layer is covered with the metal coating layer. The first insulation particles are dispersed in the metal coating layer and cover the nickel layer. The second insulation particles are dispersed in the periphery of the metal coating layer. The conducting particle has good conductivity and insulation reliability, and after the conducting particle is used for a period of time, the insulation resistance of all conducting particles is not reduced, and good conductivity is still kept. The conductivity of the conducting particle is not obviously reduced after a moisture absorption experiment.