41results about How to "Large flow capacity" patented technology

The invention relates to a 10 / 350 impact current system of an air or vacuum CROWBAR switch, which comprises a capacity resistance connected with the power, a main discharging gap, an inductance and a resistance, wherein it coupled with a CROWBAR switch between the main discharging electrode and the capacity discharging circuit of the inductance; the CROWBAR switch comprises an active electrode and a fixed electrode or it fixes fabrics a trigger electrode in the fixed electrode or the discharging gap between the active electrode and the fixed electrode; it electric connects a trigger system between the active electrode and the fixed electrode or between the fixed electrode and the trigger electrode.

The invention provides a novel gas discharge tube for coaxial cables, and belongs to the technical field of lightning protection overvoltage. The novel gas discharge tube comprises a cylindrical cavity, wherein the cavity comprises a cavity wall and plugs at the upper end and the lower end; an inert gas is arranged in the cavity; the cavity is connected to the coaxial cables in series through a metal shell; two ends of the metal shell are connected to the coaxial cables at two ends through connectors respectively; an electrode is arranged in the cavity in a radial manner; two ends of the electrode pass through the upper plug and the lower plug respectively to be connected with wire cores of the coaxial cables at two ends; the cavity wall is an electric conductor; the metal shell is connected with a grounding plate; the cavity wall, the metal shell and the grounding plate form a ground terminal; and the upper plug and the lower plug are made of insulating materials. The novel gas discharge tube has the beneficial effects that the gas discharge tube can be connected to coaxial transmission cables in series and the characteristics of a higher transmission frequency bandwidth, a lower loss, high lightning discharge capacity, more excellent protection voltage, safety and reliability can be achieved.

The invention relates to a flat plate gap arrester based on superposition of short-arc drop and near-cathode effect, including an insulating mandrel, several flat plate discharge electrodes axially threaded on the insulating mandrel, a fixing seat installed at the low-voltage end of the insulating mandrel, an insert The low-voltage electrode in the fixing seat and the main gap discharge electrode arranged at the high-voltage end of the insulating mandrel, and the silicone rubber vulcanization process used to fix the insulating mandrel, a plurality of the flat discharge electrodes, the fixing seat and The silicone rubber outer sheath of the main gap discharge electrode, wherein, several of the flat plate discharge electrodes are arranged uniformly and in parallel. Zinc oxide-free resistors, green and environmentally friendly, overcome the failure of zinc oxide resistors and the defects of moisture; the arc extinguishing mechanism is composed of three parts: near-cathode effect superposition, near-pole voltage drop superposition, and chamber blowing arc, which can effectively reduce overhead lines due to The arc establishment rate caused by lightning strikes can effectively reduce the line lightning tripping rate under extreme working conditions such as heavy minefields and harsh wet environments.

The method consists of the assistant discharging circuit containing a group of trigger electrodes setup between protected circuits or devices and a ground electrode and the main discharging circuit containing a main discharging gap. The characters of the invention are that the distance setting between the trigger electrode and the main discharging gap is based on following consideration. The assistant discharging circuit containing trigger electrodes sets the overvoltage threshold. When voltage is higher than the threshold, electric surge current flows through the trigger pole to the ground electrode. The current passing through the trigger pole sets the current threshold. When current is larger than the current threshold, electric arc is generated and electric discharge happens in main discharging gap.

The invention discloses a low-pressure fusing disconnecting switch. The low-pressure fusing disconnecting switch comprises a base (1), a silicon rubber insulator support column (2), a knife switch arranged on the silicon rubber insulator support column (2), a fusing body (10) and a wiring board (11), wherein the knife switch comprises a moving contact (3), a static contact (9), two knife switch plates (4), a pull ring (6) and a pressure spring (13); the side face of the moving contact (3) is provided with a moving contact concave touch surface (17), and / or the side face of the static contact (9) is provided with an annular concave touch surface (18); the contact surface of each knife switch plate (4) and the moving contact (3) is provided with a front-end convex touch surface (16), and the contact surface of the each knife switch plate (4) and the static contact (3) is provided with an annular concave touch surface (15); and the low-pressure fusing disconnecting switch also comprises a flash guard. The low-pressure fusing disconnecting switch provided by the invention has the advantages of simple structure, convenience in use, safety, reliability, low processing cost and large contact area; when the switch is opened and closed, the electric arc can not be generated, thereby prolonging the service life.