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2 results about "Dead water" patented technology
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Dead water is the nautical term for a phenomenon which can occur when a layer of fresh or brackish water rest on top of denser salt water, without the two layers mixing. A ship powered by direct thrust under the waterline (such as a propeller), traveling in such conditions may be hard to maneuver or can even slow down almost to a standstill. Much of the energy from the ship's propeller only results in waves and turbulence between the two layers of water, leaving a ship capable of traveling at perhaps as little as 20% of its normal speed.
Environment-friendly shallow sea clay mine mining device and method
The present application relates to the technical field of marine mineral resources exploitation equipment, and discloses an environment-friendly shallow clay mine mining device and method, which comprises a ship body, an extraction mechanism connected to the ship body, a supporting mechanism connected to the lower part of the extraction mechanism, a lifting mechanism connected to the supporting mechanism, and a mining mechanism connected to the lower part of the lifting mechanism. The present application adopts an internal-external differential speed self-adaptive stirring mechanism, an outer pot-lid-shaped self-adaptive stirring head drives flexible stirring blades to rotate, and the surrounding clay slurry is smoothly scraped to the central area. The internal rigid conical stirring head and the external stirring head form differential rotation, and the central slurry is forced to be stirred and broken through the spiral guide groove and wedge-shaped stirring fan blades, so that the problem of the "central dead water area" of traditional equipment is completely eliminated.
Owner:QINGDAO LUHAI TESTING TECHNOLOGY CO LTD
Water environment detection equipment for stagnant water area and operation method of water environment detection equipment
InactiveCN121164569AGeneral water supply conservationWithdrawing sample devicesWater flowCoil spring
The invention discloses a dead water area water environment detection device and an operation method thereof, and relates to the technical field of water environment detection. A mounting rod is detachably mounted at the bottom end of the suspension rod, a plurality of fixed partition plates are fixedly mounted on the outer surface of the mounting rod and distributed in a step shape, a water taking space is formed between every two adjacent fixed partition plates, and one or more arc-shaped rotating plates are rotationally mounted on the mounting rod. An arc-shaped barrel rod is fixedly mounted on the mounting rod, a movable plug is slidably mounted in the arc-shaped barrel rod, the movable plug is fixedly connected with the arc-shaped rotating plate through an arc-shaped inner rod, and a bent spring is fixedly mounted between the movable plug and the arc-shaped barrel rod; an air supply assembly is fixedly installed at the top end of the suspension rod, one or more air outlet ends are arranged on the air supply assembly, the air outlet ends are fixedly connected with one end of the arc-shaped barrel rod, no water flow disturbance exists in the whole water taking process, and the problem that a stable layered interface is broken is solved.
Owner:SHANGHAI ZHUOGUAN RANGE ROVER TECHNOLOGY CO LTD