38results about How to "Good cooling properties" patented technology

A reheat combustion system for a gas turbine comprises a mixing tube adapted to be fed by products of a primary combustion zone of the gas turbine and by fuel injected by a lance; a combustion chamber fed by the said mixing tube; and at least one perforated acoustic screen. The or each said acoustic screen is provided inside the mixing tube or the combustion chamber, at a position where it faces, but is spaced from, a perforated wall thereof. In use, the perforated wall experiences impingement cooling as it admits air into the combustion system for onward passage through the perforations of the said acoustic screen, and the acoustic screen damps acoustic pulsations in the mixing tube and combustion chamber.

The present invention broadly comprises a brake disc having superior cooling characteristics and a method for manufacturing brake discs with superior cooling characteristics. The brake disc has at least one slot arranged at an angle greater than zero degrees and less than ninety degrees with respect to a radius of said disc passing through said slot. The angle can be selected to enhance cooling under specified conditions. Slots in the disc can open to an inner or outer perimeter of the disc or may be fully enclosed within the disc. The shape and width of the slots and the spacing between the slots can be selected to enhance cooling properties of the disc.

Multiple parallel conductor for an electrical machine and process. The conductor includes a plurality of adjacent subconductors combined to form a subconductor bundle having an outer surface with a plurality of contiguous surface sections arranged in a longitudinal direction, and a flat protective insulation covering at least one of the plurality of surface sections. At least one of the plurality of surface sections remains uncovered by the flat protective insulation covering. A mesh sheathing further covers the plurality of surface sections.

A rotor for a rotating electric machine comprises a rotor core, and a plurality of rotor conductors wound on the rotor core. At least one of the rotor conductors is provided with a cooling groove, and edges of at least one of the cooling grooves are rounded by a radius process to reduce peak stresses that may be induced around the edges of the cooling groove.

A large number of ventilating apertures that have a circular cross section are disposed through the heatsink so as to extend from an air intake apertured surface to an air discharge apertured surface so as to have aperture directions that are parallel to each other and parallel to an element mount surface, and the heatsink is disposed such that the air intake apertured surface faces an air intake aperture and the aperture directions of the ventilating apertures are aligned in a direction of flow of a cooling airflow.

The invention discloses a water-soluble quenching medium for an aluminum alloy precision part and belongs to the metal heat treatment quenching agent technology. The water-soluble quenching medium comprises, by weight, 18-22% of polyalkylene glycol (with molecular weight of 8000), 0.6-1.0% of an antiseptic, a proper amount of an antifoaming agent and a settling agent, and the balance water. The water-soluble quenching medium has the advantages that 1, the problem that cold water as an aluminum alloy quenching medium has a fast cooling rate so that quenched residual stress is very large and the part can deform and crack is solved, and 2, it is solved that in hot water quenching, a cooling rate can be adjusted but quenching effects do not satisfy usage requirements. The water-soluble quenching medium can reduce an aluminum alloy initial cooling speed, has a strong cooling capability at a temperature of 440-250 DEG C, has good cooling characteristics and does not corrode a workpiece. The water-soluble quenching medium can reduce aluminum alloy part quenched residual stress, does not influence quenching effects and mechanical properties after aging and belongs to the field of metal heat treatment quenching agents.

A fan drive system is provided having a housing connected with a pulley. A fan shaft is rotatably mounted to the housing by a clutch. A piston actuates the clutch. A pressure tube is provided for delivering pressure to the piston. A valve controls pressure against the piston. A fixed shaft rotatably supports the housing and the pulley and has passages extending through the pulley. A base connects the support shaft to a vehicle structure. An oil plate has inlets and outlets with the shaft passages. The oil plate circulates the hydraulic fluid. A coolant plate is juxtaposed between the oil plate and the structure supporting the support shaft. The coolant plate has inlets and outlets for coolant from a remote cooler.

The chip module consists of a high thermal diffusivity base board, at least one chip mounted on base board. The high thermal diffusivity base board is made by forming insulation layer on metal compound material sheet and then mounting copper wire layer on the insulation layer. The copper wire layer can be used in adhering chip. For the material of base board, the aluminum base with high coefficient of heat-transfer is selected.

The invention relates to an engine housing (4) with a cylinder block (6) and a cylinder head unit (5) comprising a head portion (8) and at least one integrally cast cylinder portion (9) with an internally lying piston bearing surface (11). The cylinder portion (9) of the cylinder head unit (5) can be pushed at least partially in the axial direction of the cylinder portion (12) into the cylinder block (6). The cylinder head unit (5) can also be clamped in the axial direction of the cylinder portion (12) against the cylinder block (6) by means of at least one fixing element (23).

The invention discloses a cool skin-friendly PP spun-bonded non-woven fabric and a preparation method thereof. The cool skin-friendly PP spun-bonded non-woven fabric is prepared from the following raw materials in parts by weight of 60 to 70 parts of polypropylene, 22 to 30 parts of a polyurethane elastomer, 2 to 3 parts of porous diatomite, 6 to 9 parts of sepiolite powder, 2 to 2.5 parts of silicon dioxide porous ceramic powder, 3 to 5 parts of nano titanium dioxide, 1.8 to 2.5 parts of nano zirconium oxide, 8 to 12 parts of metallocene linear low-density polyethylene and 1.5 to 2.5 parts of maleic anhydride grafted polyethylene. The cool skin-friendly PP spun-bonded non-woven fabric is large in moisture absorption constant, high in water absorption rate, high in air permeability and good in hydrophilic and skin-friendly performance; a good cool feeling can be provided and the cool feeling is uniformly distributed; the addition amount of an inorganic filler can be reduced on the premise that the cool feeling is good; and it is guaranteed that the cool skin-friendly PP spun-bonded non-woven fabric has good mechanical properties and skin-friendly and hydrophilic comfort.

PCT No. PCT/NO96/00213 Sec. 371 Date Jun. 8, 1998 Sec. 102(e) Date Jun. 8, 1998 PCT Filed Aug. 29, 1996 PCT Pub. No. WO97/09771 PCT Pub. Date Mar. 13, 1997The present invention relates to an arrangement in a bulb generator (G), comprising a generator housing (1, 10, 110, 210, 310, 410) arranged in a water flow for letting turbine water flow there along and towards the turbine (4), which arrangement comprises means for removing surplus heat generated during operation of the generator, which mean comprise elements which are assembled as flow channels for coolant and/or heated generator air for indirect or direct cooling of the generator air, and for the purpose of providing a cooling system which to a large degree is independent of the quality of the river water or turbine water, and which also comprises elements which are non-costly as regards manufacturing and assembly, it is according to the present invention suggested that said means (111; 411) comprise, as known per se, extruded elements, especially elements which either comprise channels or by assembly define channels (112; 412) for circulating coolant, especially circulating air, or any other appropriate coolant, and that an outer surface of the extruded elements is exposed to bypassing turbine water.

An electric motor includes a housing, a stator having end turn windings, a rotatable central shaft, a rotor mounted onto the central shaft, and a rotor end ring mounted onto the central shaft adjacent the rotor, the rotor end ring including an annular disk shaped body having a circumferential outer diameter and a circumferential inner diameter and being formed from a thermally conductive material, a recess formed within a face of the body, an oil jacket formed within a back side of the body, the oil jacket comprising an annular channel having a circumferential outer wall and a circumferential inner wall, two inlets, each inlet extending radially between the inner diameter of the body and the inner wall of the oil jacket, a plurality of outlets, each outlet comprising a circumferential slot, the plurality of outlets equidistantly spaced around the face adjacent the circumferential inner wall of the oil jacket.

The invention discloses a high-wear-resistant edge mold material and a heat treatment process thereof, and belongs to the technical field of mold materials. The high-wear-resistant edge mold materialcomprises the following components in percentage by mass: 0.45%-0.55% of C, 0.9%-1.2% of Si, 0.3%-0.6% of Mn, 4.9%-5.5% of Cr, 1.3%-1.6% of V, 1.3%-1.6% of Mo, P <= 0.03%, S<= 0.03% and the balance Feand inevitable impurities. The heat treatment process comprises the following steps: 1, pre-heat treatment: heating an edge mold material to 830-870 DEG C, keeping the temperature for 2-3 hours, andair-cooling to room temperature; 2, quenching treatment, specifically, the edge mold material treated in the step 1 is heated to 820-840 DEG C, and after heat preservation is conducted for 5-7 hours,the edge mold material is put into a quenching medium to be cooled to the room temperature; and thirdly, tempering treatment, specifically, tempering treatment is conducted on the blade mold materialtreated in the second step. By improving the components of the edge mold material and the heat treatment process, the wear resistance and comprehensive mechanical properties of the blade mold materialare greatly improved.

The invention provides a small-sized metal part surface laser heat treatment platform which is mainly composed of a laser device, a laser optical path system, a combined material bearing device and a control system. The control system is electrically connected with the laser optical path system. The laser optical path system comprises a collimation device and a two-dimensional scanning galvanometer system. The combined material bearing device sequentially comprises an upper screw rod guide rail transmission material bearing device, a middle worm gear screw rod lifting device and a bottom sliding device from top to bottom. The upper screw rod guide rail transmission material bearing device is located under the two-dimensional scanning galvanometer system and comprises a supporting plate which is connected with the middle worm gear screw rod lifting device and a material bearing table which is arranged on the supporting plate in a slideable mode and can move in the Y direction. The material bearing table is provided with a platy metal clamping platform and a columnar metal clamping device. The bottom sliding device is arranged on a bottom plate of a workbench in a slideable mode and can move in the X direction. The X direction, the Y direction and the lifting direction are perpendicular to each other in a pairwise mode. The small-sized metal part surface laser heat treatment platform has the beneficial effects that one machine can achieve multiple purposes, precision is high and errors are small.

A turbine electric power generator is provided with winding slots and sub-slots of a rotor; rotor windings having conductors and insulation materials laminated alternately thereon; wedges; and radial ventilation flow passages communicating the sub-slots with through holes of the wedges. In this turbine electric power generator, a projection is provided on an inner face of the radial ventilation flow passages, and the projection height is changed at a rotational axial position. In this manner, there can be provided a gas cooling type rotary electric power generator for turbine with its high cooling performance and high reliability at a low cost.