6results about How to "Increased longevity" patented technology

The invention relates to a nickel-based single-crystal high-temperature alloy and a preparation method thereof, and relates to the technical field of single-crystal high-temperature alloys. According to the main technical scheme, the nickel-based single crystal high-temperature alloy is prepared from the following chemical components in percentage by mass: 6 to 8 weight percent of Cr, 7 to 9 weight percent of Co, 1 to 3 weight percent of Mo, 7 to 9 weight percent of W, 5 to 7 weight percent of Ta, 5 to 7 weight percent of Al, 0.5 to 2 weight percent of Ti, 0.5 to 1 weight percent of Nb, 0.008 to 0.013 weight percent of N and the balance of Ni. After the Nb and the trace element N are introduced, the void ratio in the as-cast alloy is reduced by 35%, the void ratio of the heat-treated alloy is reduced to 28% after treatment of a set heat treatment process, and the high-temperature strength and the endurance life of the low-cost second-generation single-crystal high-temperature alloy are further improved. The nickel-based single-crystal high-temperature alloy is particularly suitable for manufacturing hot-end high-temperature components with long service life and high reliability in the fields of aviation, aerospace, energy and the like.

The hold-down die includes a lower die and an upper die that crimp the crimp terminal to the electric wire. For example, the lower mold protruding part is formed in the lower mold concave part in a manner that a part is continuous with the first inner surface closest to the lower mold indentation part, and the lower mold groove part is formed in the lower mold protruding part in a manner that a part is open at the first outer surface closest to the lower mold indentation part. The lower mold protruding portion is engaged with the upper mold groove portion when the lower mold concave portion is engaged with the upper mold convex portion, and the upper mold protruding portion is engaged with the lower mold groove portion when the upper mold concave portion is engaged with the lower mold convex portion. For example, a first starting point position, which is a position closest to the lower mold surface, of the lower mold protrusion is included in a height range corresponding to the depth from the lower mold surface to the lower mold indentation bottom surface.

Disclosed is an aircraft system for handling cryogenic liquid. The aircraft system comprises a vessel configured to store cryogenic liquid, and a vacuum ejector operable to cause at least some of the cryogenic liquid to be moved from the vessel.

Disclosed is an ecological building with an organic agricultural aquaculture function and an internal circulation treatment function. The ecological building comprises a production maintenance passage (20) arranged on the building and located on an elevation of an external wall of each storey. Replaceable planting boxes (3) are arranged on an external wall of the building, each kitchen in the building is provided with a garbage crusher, and each toilet in the building is provided with a vacuum toilet system. A biogas digester (7) is in communication with a vacuum base station (8), the vacuum base station (8) is connected to the vacuum toilet system via a vacuum pipeline (10), the biogas digester (7) is in communication with a biogas slurry storage pool via a biogas slurry pipeline (11), and an inlet end of the biogas digester (7) is connected to a discharge port of the garbage crusher via a black water delivery pipeline (12). The ecological building realizes ecological environmental protection and zero discharge of household garbage, and has an organic agriculture production function and an internal circulation treatment function.

The invention discloses a Boost circuit with continuous output current and a boost control method, and belongs to the technical field of circuits. In a starting mode, the drive control module controls a first inductor in the oscillation elimination module to be connected to a path, controls a first switch tube and a second switch tube in the power half-bridge to work alternately, and transmits current output by the input power supply to the LCL module through the oscillation elimination module and the power half-bridge, and the LCL module provides continuous output current to the output module. The output voltage is monotonically increased from zero to a target value; the driving control module controls a third switch tube in the oscillation elimination module to be connected to a path, controls a first switch tube and a second switch tube in the power half-bridge to work alternately, and transmits current output by the input power supply to the LCL module through the oscillation elimination module and the power half-bridge, and the LCL module provides continuous output current to the output module; and the output voltage or the output current is constant. According to the invention, oscillation can be eliminated, isolators are saved, and the circuit structure is simplified.