167 results about "Penstock" patented technology

The present invention has incorporated a re-boosting pump to re-boost and to supply additional pressure energy input to a system periodically. The re-boosting pump gets its energy from a starting/re-boosting generator. This works to keep the level of the energy output sustainable.

Another feature of the present invention is that it has incorporated a convergence recoil nozzle that utilizes a recoil force of the water jet. This recoil force which is equal in magnitude and opposite in direction, will push a piston that is inside a pressure chamber. This force is capable of doing different kinds of works, such as a pressurized liquid to add energy input to the system through a pressure pipe into the main penstock or it can be used as a pressure energy for the desalination of saline water.

The invention relates to a metallocene geomembrane which is used for railway laying, a refuse landfill, a tunnel, a penstock, a reservoir, a dyke, a sewage tank, an ecological tank, a landscape lake, an aquiculture tank and the seepage resistance and the water resistance of railway and highway engineering and is prepared by ingredients through a coextrusion machine. The metallocene geomembrane is characterized by comprising the following components by the weight percent: 64 to 73 of metallocene linearity low-density polyethylene, 24 to 32 of high-density polyethylene and 0.1 to 3 of assistant, wherein the assistant comprises a modifying assistant and a processing assistant, the modifying assistant is the antioxidant, and the processing assistant is carbon black or PPA. The Metallocene geomembrane has good puncture resistance, good,anti-tear property and high tensile strength.

A hydroelectric power system is provided. The hydroelectric power system includes a storage tank; a fluid; a penstock; an electric turbine generator, a transformer, an electric power grid system; a pump, and connecting conduit. A method of generating hydroelectric energy is also provided.

An energy generating system is provided, comprising a primary waterwheel for receiving water from a head penstock or upper pumping setup, the primary waterwheel comprising a plurality of radial arms rotatable about a primary axis, the radial arms terminating in water scoops for accommodating the water from the head penstock or upper pumping setup, the primary waterwheel defining head height. The system further comprises at least one additional waterwheel located within the head height of the primary waterwheel, the additional waterwheel also comprising a plurality of radial arms rotatable about an axis, the radial arms terminating in water scoops for accommodating either excess water from the head penstock or upper pumping setup or water that has spilled out of the water scoops of the primary waterwheel. In an example embodiment, the primary waterwheel and the at least one additional waterwheel are vertically orientated. In an example embodiment, the at least one additional waterwheel is smaller than the primary waterwheel.

The power plant disclosed is an engine that derives its usefulness in the pursuit of energy generation by utilizing hydrostatic pressure differentials found or created in various liquids, gases or solutions, such as but not limited to water and air. It is generally provided as a two-stroke piston cycle power generating system, wherein the actions of the pistons perform work or replenish working fluid from a lower head to a higher head, and can be utilized to generate power, pump fluids, or perform work, for example. Multiple power generating systems are interconnected to provide continuous and constant power generation through a penstock and turbine system.

Applicant's preferred embodiment utilizes municipal wastewater effluent to replenish a depleted geothermal field. Condensate produced by expanding steam produced in the geothermal field through a steam turbine-generator may be pooled with cooked water collected from said field, and then directed through a penstock from a higher elevation to a lower elevation where further energy is extracted through a traditional hydroelectric turbine-generator. The cooked water and condensate may be treated to produce potable water and/or distributed for public consumption either before or after being directed to the hydroelectric turbine-generator. The effluent is pumped up to the geothermal field during off-peak periods of electric consumption, and the hydroelectric generation is accomplished during periods of peak electric demand. A fraction of the effluent may be used as cooling water for the steam turbine-generator and its associated condenser before injection into the geothermal field. At least a portion of the pipeline to transport the wastewater effluent is preferably routed along an undisturbed riverbed and/or through an excavated tunnel.

The invention provides a construction method for repairing a pressure water supply pipe with big diameter without excavating. The method comprises such procedures as clearing scale in the old pipe, laying an inner lining pipe, connecting, inspecting and pressure testing the pipe, etc. The method is characterized in that, the laying of the inner lining pipe is to pass a glass steel & sand pipe and a steel pipe in diameter slightly smaller than that of the former mother pipe into the former mother pipe, a glass steel & sand pipe is used at pipe section without branch, and a steel pipe is used at pipe section needing branch; between the inner lining pipe sections, a joint of sealing and connecting function is provided. The construction method in the invention is relatively simple, the process is mature, economic and practical, and a repaired pipe has the advantages of the small resistance in delivering liquid, the good resistance to corrosion, the long service life and the no water pollution.

The invention provides a technique for manufacturing a steel plate for a 600MPa hydropower steel penstock. The steel plate comprises the following chemical components in weight percentage: 0.06-0.09% of C, 0.20-0.40% of Si, 1.4-1.6% of Mn, less than or equal to 0.015% of P, less than or equal to 0.005% of S, 0.02-0.04% of Nb, 0.20-0.40% of Ni, 0.10-0.30% of Cr, 0.10-0.30% of Mo, 0.03-0.05% of V, 0.01-0.02% of Ti and the balance of Fe and inevitable impurities. Through a low-carbon microalloying design, a thermo-mechanical control process (TMCP) and a tempering process (T), a metallographic structure mainly based on a tempered bainite is ultimately obtained, thus achieving good matching of strength, plasticity, toughness and weldability, reducing the production cost and improving the production efficiency. The steel plate is mainly used for manufacturing the hydropower penstock.

The invention discloses a welding wire special for high-strength steel penstock submerged-arc welding and belongs to the field of welding materials. The welding wire comprises, by weight, 0.08%-0.2% of C, 0.1%-0.3% of Si, 1.5%-2.5% of Mn, 1.5%-3.5% of Ni, 0%-0.5% of Cr, 0.5%-1.0% of Mo, 0%-0.05% of Al, 0%-0.2% of Nb, 0%-0.2% of V, 0%-0.2% of Ti, 0%-0.01% of B, 0%-0.005% of O, 0%-0.01% of N, 0%-0.01% of S, 0%-0.01% of P, and the balance Fe and inevitable impurity elements. The welding wire is matched with a hydroelectric steel penstock made of a 100kg-grade steel plate, and when the welding wire is matched with alkaline welding flux, the requirements of a welded joint of the hydroelectric steel penstock made of the 100kg-grade steel plate that welded joint tensile strength is higher than or equal to 950 MPa, minus 60 DEG C ballistic work is higher than or equal to 47 J and 0 DEG C ballistic work is higher than or equal to 100 J can be met.

The invention relates to an eco-friendly subsidiary dam capable of improving gas supersaturation generated during flood discharge and energy dissipation of large-sized hydraulic and hydroelectric engineering, comprising a dam body. The downstream face of the dam body is an overflow surface, a gate is arranged on a dam crest to control the outflow rate on the overflow surface so that the maximal water depth of the outflow of the overflow surface does not exceed 5m; a backward step of the dam body adopts the continuous type, and meanwhile, the flow over spillway is smoothly connected with the downstream water flow, so that the gas supersaturation water body is positioned at the upper layer of a downstream river course to accelerate the escape speed of the gas supersaturation water body; and the inner part of the dam body is provided with a penstock to guide the water in a water cushion pool to the lower reaches. The eco-friendly subsidiary dam capable of improving gas supersaturation can reduce water saturation when water passes through a low-head water turbine, reduces the supersaturation of the water of the downstream river course, and effectively controls the influence of gas supersaturation caused by flood discharge of the dam on the aquatic organism of the lower reaches.

The present application describes a method for welding two parts to each other. The two parts are made from steel having a high thermomechanical yield strength. The welding method includes a welding step in which a weld bead is created inducing a heat-affected zone to appear. The method also includes a heat treatment step having a heating step, during which at least one portion of the weld bead and the HAZ is gradually heated to a treatment temperature; then a holding step in which the portion of the weld bead and the HAZ is kept at the treatment temperature; then a cooling step in which the HAZ and the weld bead are gradually cooled and pass from the austenitic transformation end temperature to the martensitic transformation end temperature of the steel of the parts in a time between 7.5 s and 8.5 s, and pass from the austenitic transformation end temperature to the martensitic transformation end temperature in a time shorter than 15.5 s. The present application also describes a penstock obtained with such a method.

The present invention refers to a underwater unit (1) for a hydroelectric power plant and a modular hydroelectric power plant (2) comprising a plurality of such units. The unit (1) according to the invention uses the principle of functioning of the traditional hydroelectric power plants and comprises a penstock (200) which involves a “head” of at least 100 m, and preferably of about 150-300 m, and carries elevated kinetic energy water masses from the surface of a water basin down to one or more turbines (301a-301f) provided in depth under the surface of the basin itself, so as to transfer the kinetic energy from the water to said turbines and to transform then the kinetic energy into electric power. Thanks to the use of variable volume discharge tanks (313a,313b) positioned downstream the turbines, it is possible to easily and effectively return the water masses used for the actuation of turbines themselves to the surrounding environment.

A hydro electric energy generation structure is disclosed. The structure comprises: a gravity wall forming a closed outer perimeter extending above an upper water level of an existing hydraulic reservoir, and extending below the reservoir floor; at least one water inlet hydraulically connecting a first penstock to a first turbine generator below the water inlet. The structure further comprises: at least one lower water storage reservoir within the perimeter of the gravity wall receiving water from the first turbine generator; at least one pump receiving water from the lower water storage reservoir and pumping it through a pump delivery conduit to at least one upper water storage reservoir above the gravity wall; at least one second penstock delivering water from the upper water storage reservoir to a second turbine generator below; and a tailrace for returning the water into the existing reservoir.

The hydroelectric power generating system incorporates a man-made dam structure configured to completely enclose a body of water. The dam is preferably filled by pumping seawater into the reservoir defined by the encircling dam. A circumferential canal feeds water to one or more penstocks. Each penstock has one or more hydroelectric turbine generators installed therealong. The penstocks feed an enclosed circumferential channel about the base of the dam. The channel delivers water to a pump that pumps the water back into the bottom of the reservoir. While this system results in a net loss of energy, the system can make use of surplus power to drive the return pump during periods of low electrical demand in order to replenish the reservoir.

An Artificial Gravity Fueled Fluid Dynamic Day Energy Generator/Motor that initially uses external power to spin a partially submerged low drag fluid distributor rotor that uses centrifugal force to cause fluid to flow from the center of rotation, through a plurality of Euler contoured penstocks, in a true radial direction through a high “g” artificial gravity field, which dramatically increases the fluid's kinetic energy and releases available power, before it is guided out tangentially from the distributor via a plurality of nozzles symmetrically located at a small height just above the reservoir surface (near zero lift). As the frequency of the rotor is increased linearly the fuel Artificial Gravity increases exponentially, as does the fluid dynamic available power Pa. Turbine runners on the rotor assembly capture the available power, and a positive feedback mechanical transmission couples the captured rotational power to the I/O shaft in its initialized direction.

The invention provides an inner support device for manufacturing a penstock. The inner support device for manufacturing the penstock is composed of two single support frames which have the totally same structure. According to each support frame, a hexagonal I-shaped steel support and penstock supports are welded together, the penstock supports are welded into a whole through angle steel connecting rods, the end of each penstock support is welded to a jack support, each jack is welded to one jack support, and the two support frames are welded into a whole through U-steel connecting rods. When being used, the inner support device for manufacturing the steel penstock is hung in the penstock, the roundness of the penstock can be accurately controlled through adjustment of the abutting deviation between the lower-layer jacks and the penstock wall, and therefore beneficial conditions are provided for follow-up operation such as welding and stiffening ring assembly alignment. The inner support device for manufacturing the steel penstock is easy to install, convenient to use, easy to disassemble, capable of enabling the roundness of the penstock and the surface quality of the penstock wall to be effectively controlled, lightening the auxiliary workload of penstock manufacturing, improving the production efficiency and saving cost, and reusable.

The invention discloses a continuous casting manufacturing process of ultra-thick slabs for hydropower station pressure vessel steel, and belongs to the technical field of steelmaking-continuous casting. The process includes the steps that casting powder special for peritectic steel of which the carbon content ranges from 0.08% to 0.14% is designed according to continuous casting characteristics of the peritectic steel; taper values of hydropower station steel penstock casting blanks with different thicknesses are set according to steel type conditions. The defects of surface transverse cracks of the casting blanks and corner transverse cracks of the casting blanks are overcome by setting an ultra-thick slab continuous casting secondary cooling mode. Different pulling rates are set according to the thickness and the width of the slabs, and the problem of center segregation of the ultra-thick slabs is solved through low-pulling-rate casting. The process has the advantages that the process is simple and high in generalization performance, the applicable thickness specification range of the continuous casting slabs is from 400mm to 600mm, and the width specification range is from 1600mm to 3000mm. By utilizing the ultra-thick slabs to manufacture hydropower station steel penstocks through the process, surface indentations, surface transverse cracks and the center segregation level of the casting blanks all can be well controlled.

The invention discloses an ultra-large-diameter steel penstock installation construction technique. An installation method comprises the steps that ultra-large-diameter steel penstocks are coupled on site, specifically, tiles split into three flaps are rounded, single-section steel penstocks are assembled into multi-section steel penstock sets through assembling and welding, and stiffening rings are additionally welded to the multi-section steel penstock sets; the coupled steel penstock sections are transported in an adit, specifically, rails are prefabricated and paved in the adit, and the steel penstocks are transported to an installation station through a separable trolley; and the formed steel penstocks are positioned and installed, specifically, in the installation station, after steel penstock bodies are regulated to the installation height and fixed through a separable trolley jacking device, the trolley is removed, and integral installation of the multiple steel penstock sections is achieved. According to the ultra-large-diameter steel penstock installation construction technique, the operation layout of a traditional production line is effectively simplified, temporary assembling facilities inside the adit are simplified, the excavated sections of branched holes and the excavated sections of a main hole are decreased, the occupied area for steel penstock section assembling is decreased, and the requirements of a place where finished products can be stacked are eliminated; steel penstock sections are formed at a time during secondary assembling and welding, and the installation precision is improved through mechanical assembling and welding; and the installation construction technique does not rely on traditional lifting and turning modes any more, the safety risk is lowered, the installation construction period is shortened, the installation personnel number is decreased, and investment is reduced.

Embodiments of this invention provide an integrated system for clean energy generation and storage and RO desalination. The integrated system includes a first subsystem that stores hydraulic energy. The integrated system further includes a second subsystem that desalinates water. The integration system also includes a penstock that facilitates flow of the water between the first subsystem and the second subsystem. The integrated subsystem may also incorporate solar and/or wind power generation plants as a power source for the integrated system.