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60results about How to "Avoid lateral flow" patented technology

Skylight membrane with diverter

The present invention 10 discloses an elastomeric skylight membrane molded as a single piece comprising a planar element 18 for sealably engaging roof sheathing 26 and a centrally positioned collar element 20 for sealably engaging the rough opening framing members 34. The skylight collar membrane 20 is inserted over the framed rough opening for a skylight 16 having the elastomeric collar element tightly engaging the framing members 34 and of substantially the same height as the rough opening frame members. The planar element 18 engages the roof sheathing 26 and is fixedly attached thereto by any means well known within the art. Positioned across the up slope side 36 of the collar 20 is an angularly protruding edge 32 for preventing water from wicking between the skylight frame 34 and the skylight membrane 10. To prevent lateral flow from the up slope edge 36 of the skylight 16 there are two spaced apart ridges 22 transversely positioned to the turnback collar sides extending above and below the horizontal edge 30 of the up slope side 36. The diverter ridges 22 spaced away form the turnback side 32 obstruct lateral water flow returning it to a downhill flow. The planar element 18 further has a bead 38 on three sides near its periphery that will redirect any water that has accumulated between the skylight membrane and shingles to a downward flow.
Owner:SWEARINGEN MICHAEL R

Axle steel continuous casting method

The invention relates to an axle steel continuous casting method. The method comprises the following steps of: pouring molten steel to a crystallizer from a pouring box to form an axle steel casting blank which is not fully solidified; and then withdrawing the axle steel casting blank which is not fully solidified from the crystallizer at a withdrawing speed v and sequentially going through a secondary cooling zone and an air cooling zone to obtain a fully solidified axle steel casting blank. The method also comprises a soft press process for utilizing at least one of the plurality of soft press stands sequentially arranged on the air cooling zone to perform soft reduction on the axle steel casting blank which is not fully solidified, and the central solid fraction fs of the axle steel casting blank which is not fully solidified in the soft press process is kept at 0.2 to 0.95. Soft press is carried out on the axle steel casting blank which is not fully solidified with the central solid fraction of 0.2 to 0.95, internal gaps formed by casting blank shrinkage can be eliminated or reduced to prevent the intergranular solute-enriched molten steel from laterally flowing to a casting blank center, and the intergranular solute- enriched molten steel of a liquid phase center is induced to flow along the opposite direction of the blanking withdrawing direction, solute elements are redistributed in the molten steel, and the center segregation is improved.
Owner:PANGANG GROUP RESEARCH INSTITUTE CO LTD +2

Method for ensuring uniform water inflow of water collecting basin in fan-shaped municipal sewage lifting pumping station

ActiveCN109056987AImprove water flowIncrease bottom velocitySewerage structuresSewage drainingMunicipal sewageEngineering
The invention discloses a method for ensuring uniform water inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station. A combined rectifying device consisting of a figure-eight-shaped diversion pier and a folding beam is arranged at the front end of the water collecting basin of the fan-shaped municipal sewage lifting pumping station. The method for ensuring uniform water inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station adopts the combined rectifying device consisting of the figure-eight-shaped diversion pier and thefolding beam to achieve effects of improving the water inflow state of the water collecting basin of the lifting pumping station, and effectively ensuring the uniformity of flow velocity distributionon a horizontal plane and the sound inflow state on a vertical plane of the incoming flow of pump units of the fan-shaped municipal sewage lifting pumping station. The method for ensuring uniform inflow of a water collecting basin of a fan-shaped municipal sewage lifting pumping station has the advantages of being high in engineering application value for ensuring safety, reliability and efficiency of the pumping station, simple in structure and convenient to construct and manufacture, and is suitable for promoting and using in the design and renovation of a municipal sewage lifting pumping station in the form of a fan-shaped pump room structure.
Owner:HOHAI UNIV

Agitating water jet propeller

InactiveCN104015909AGuaranteed sailing performanceAvoid the effects of wakePropulsive elementsPump-jetWater flow
The invention provides an agitating water jet propeller which comprises a water jet barrel, a reciprocating type spindle, a rotating shaft and vanes. The water jet barrel comprises a straight barrel portion and a horn barrel portion, wherein water inlets are formed in the horn barrel portion, the large end of the horn barrel portion is fixed to one end of a ship body, and the small end of the horn barrel portion is connected with the horn barrel portion. The end of the reciprocating type spindle is connected with the middle of the rotating shaft, two slide grooves are formed in the inner wall of the straight barrel portion, and the two ends of the rotating shaft are respectively arranged in the two slide grooves. The vanes comprise the first vane and the second vane, wherein the first vane and the second vane are connected through a connecting piece, the first vane and the second vane can rotate relative to the connecting piece, two connecting rings are arranged on the connecting piece, and the connecting piece sleeves the rotating shaft through the connecting rings. The agitating water jet propeller can avoid effects of stern wake on the premise of guaranteeing ship navigation performance, can push water flow to move backwards in the axial direction, can avoid horizontal flow, reduces energy loss and improves the propelling efficiency.
Owner:HARBIN ENG UNIV
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