197 results about "Microwave tube" patented technology

The invention discloses a surface tunneling miniature electron source, an array thereof and an implementation method of the array. The surface tunneling miniature electron source is of a planar multi-region structure and comprises an insulation substrate, wherein two conductive regions and an insulation region are arranged on a surface of the insulation substrate, the insulation region is arranged between the two conductive regions and are connected with the two conductive regions, and the minimum distance between the two conductive regions, namely the minimum width of the insulation region is smaller than or equal to 100 nanometers. Compared with an existing tunneling electron source having a perpendicular multi-layer structure, the electron source and the array thereof have the advantages of high electron emission efficiency, simple structure, easiness in array integration on a large scale and the like, are convenient to process and can be widely applied to various electronic devices relating to the electron source, such as an X-ray tube, a microwave tube and a flat-panel display.

The invention relates to a method for exploiting seabed surface natural gas hydrate and an exploiting device thereof, which are used in the field of natural gas exploitation. It overcomes the problems of expensive reagents, complex instruments and equipment, large energy consumption for lifting and complex three-phase flow involved in the current mining. Its technical plan: first start the development device on the mining vehicle to drive the cutting head to cut the natural gas hydrate on the surface of the seabed; then suck the natural gas hydrate slurry into the particle refinement device through the delivery pipe B, and then use the slurry pump to pump it into the right transfer chamber ;Start the control center, the solid-flow gas three-phase hydrate enters the right heating chamber, trigger sensor B to start, the microwave tube is heated, the natural gas hydrate decomposes, and the natural gas is collected by the gas collecting device on the working ship through the gas pipeline; The pipe discharges into the seabed. The mining method is simple in principle and practical, and can conveniently realize the continuous mining of natural gas hydrate; the mining device has a simple structure and low energy consumption, and is used for seabed natural gas hydrate mining.

A microwave tube has a configuration in which the connection between an anode electrode and the helix is cut, the helix is grounded, and a current suppression element is provided between the anode electrode and ground voltage for suppressing the continuous time interval of the flow of an excess current to the helix that is caused by discharge to a time interval range that does not threaten damage to the helix, i.e., to a time interval range in which an alarm signal is not supplied.