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5123results about How to "Avoid destruction" patented technology

Habitat friendly, pressure conversion, wind energy extraction

A habitat friendly, pressure conversion, wind energy extraction system is disclosed for safely extracting usable energy from wind. The system includes one or more shrouds or concentrator wings that convert the dynamic pressure of wind into relatively lower static pressure and thereby induces a vacuum that draws wind into a turbine centralized within the shrouds or concentrator wings. As such, the turbine impellor blades may be significantly smaller than the large diameter rotor blades of current popular designs and may be enclosed within the shrouds or concentrator wings that present themselves as highly visible objects and as such are easily avoided by birds in flight. The novel system in particular includes a device and method of airflow regulation than minimizes or prevents the stalling, or the generation of a turbulent flow of wind over or between the shrouds or concentrator wings. This stalling has been shown to occur when airflow is quickly accelerated by force of vacuum and drawn out of the turbine shroud which then mixes with and disturbs the otherwise smooth flow of wind over or between the shrouds or concentrator wings. The system may also include an aerobrake that responds quickly to protect the impellor blades or associated mechanisms from overspeeding or exceeding other design limitations under gusting or violent wind conditions. The system may also include a method of guiding elements of the system to orient appropriately into prevailing winds, and a method to support elements of the system, without unduly impeding the free flow of wind. Other advantages and objects are as well disclosed that increase safety and efficiency, increase installation potential, reduce costs and expenses, and minimize negative environmental impact.
Owner:TOCHER ANGUS J

Synthesis and surface modification method of lithium excessive laminar oxide anode material

The invention relates to a synthesis and surface modification method of a lithium rich anode material Li1+xM1-xO2 (M is one or more of Ni, Co and Mn, and X is more than or equal to 0 and less than or equal to 1/3) for a lithium ion battery. The method comprises the following steps of: synthesizing a precursor by using a carbonate precipitation method, mixing the precursor and a lithium salt, and calcining for 2 to 20 hours at the temperature of between 800 and 1,100 EG C to obtain a lithium rich material, wherein the prepared lithium rich material has controllable particle size and higher reversible capacity; and dissolving persulfate or sulfate in an amount which is 5 to 80 mass percent of the lithium rich material into deionized water, adding the lithium rich material, stirring for 2 to 100 hours at the temperature of between 25 and 80 DEG C, heating the materials to the temperature of between 100 and 500 DEG C in a muffle furnace, calcining the materials for 2 to 20 hours, fully filtering the obtained materials, and washing off impurities to obtain the surface modified anode material Li1+x-yM1-xO2. The synthesized lithium rich material has controllable particle size; the first charge/discharge efficiency of the lithium rich material and the discharge specific capacity and the cyclical stability under high magnification can be improved; and the method is simple, low in cost, convenient for operation and suitable for industrialized production.
Owner:GUANGZHOU HKUST FOK YING TUNG RES INST

Method for preparing continuous fiber multiaxial fabric reinforced thermoplastic composite material

The invention discloses a method for preparing a continuous fiber multiaxial fabric reinforced thermoplastic composite material. The prepared continuous fiber multiaxial reinforced thermoplastic preconsolidating material is taken as a base material of the composite board, and combined with other functional materials for forming a novel material system which can be used for producing multiaxial fabric reinforced thermoplastic composite materials for different industries and solving the technical bottleneck that different materials have different composite bonding difficulties. According to the invention, the prepared composite material is constructed by continuous fiber multiaxial direaction; materials have the characteristics of resilience and uniform stressing on different directions. In addition, light sandwich panel formed by a honeycomb core material provides higher impact strength of materials, which is suitable for preparing structural parts and interior decorative parts in the field of railway car containers of navigation and aviation. The product of light-weight flame retardant can be recovered and used, and is more suitable for industrialization scale production of the warp knitting industry organization.
Owner:CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH

Method for manufacturing dendrobium officinale fresh juice stock solution

InactiveCN102008654ANot easy to clarifyNot easy to filterMetabolism disorderAlcoholic beverage preparationFlavorAdditive ingredient
The invention discloses a manufacturing method for extracting and processing fresh juice stock solution by using dendrobium officinale as a raw material. The method furthest protect the color, flavor, nutrition and effective ingredients of dendrobium officinale fresh juice by surface sterilization of the collected fresh dendrobium officinale and technology of juicing, enzymolysis, vacuum degasification, micro-filtration, ultra-filtration, sterile filling, high-temperature instantaneous sterilization and the like, and meanwhile, the product is favorable for storing and realizing industrialized production. The dendrobium officinale is processed into the dendrobium officinale fresh juice stock solution which is easy to store, convenient to carry, simple to administrate, good in mouthfeel and easy to absorb and has health-care nutritional components and medicinal functions; the fresh juice stock solution does not contain any additive; and the content of the fresh juice stock solution reaches over 99 percent. The dendrobium officinale fresh juice stock solution can be administrated separately, also can be added into mineral water to form health-care beverage, also can be dissolved into wine to form nourishing health-care wine, and can be added into high-grade dishes to form nourishing dishes for eating.
Owner:杨军

Top-cutting roadway coal-pillar-free mining method of close-range thin coal seam

The invention discloses a top-cutting roadway coal-pillar-free mining method of a close-range thin coal seam. The method comprises the following steps of: (1), excavating an upper crossheading roadway and a lower crossheading roadway; (2), mounting a grouting constant-resistance anchor rope and a grouting constant-resistance anchor rod without grouting at first, and a monomer hydraulic pillar, machining energy-accumulation presplitting top-cutting holes, and blasting to obtain presplitting cutting joints; (3), extracting an upper coal seam till unavailable; (4), allowing a mining field ejection plate to collapse along the shallow energy-accumulation presplitting cutting joints; (5), spraying a concrete spray layer to the rise side wall of the lower crossheading roadway, and grouting the grouting constant-resistance anchor rope and the grouting constant-resistance anchor rod; (6), extracting a lower coal seam till unavailable, and allowing the mining field ejection plate to collapse along the deep energy-accumulation presplitting cutting joints; (7), taking a roadway automatically formed at the original lower crossheading roadway as the upper crossheading roadway of a next mining surface; and (8), repeating steps (2) to (7). According to the method, by using the cutting joints formed by the energy-accumulation presplitting top-cutting holes for blasting the ejection plate, shallow breakage and deep breakage can be performed twice, and twice collapse of the mining field ejection plate is achieved.
Owner:CHINA UNIV OF MINING & TECH (BEIJING)

Triaxial creep tester of unsaturated soil

The invention discloses a triaxial creep tester of unsaturated soil, and relates to a geotechnical test apparatus. By inlaying a china clay plate with high air entry value in the pedestal of a pressure chamber, the geotechnical test apparatus allows water in a soil sample to pass through the china clay plate, but exerted gas cannot pass through, thereby realizing the aims of controlling groundmass suction and ensuring waterdrainage. The upper part of the china clay plate has a sample sleeved with a rubber membrane, and the upper part of the sample is provided with a porous plate and a sample cap; the sample cap is connected with a set of pipelines capable of controlling air pressure to exert pore air pressure on the sample and control pore air pressure; and the bottom of the china clay plate is respectively connected with a wash pipe and a drainpipe which play roles in washing air bubbles on the bottom of the china clay plate and waterdrainage respectively. A sample pressure chamber adopts a double-layer pressure chamber, namely a double-layer organic glass cylinder. An inner pressure chamber is filled with air-free water to exert a confining pressure on the sample, while an outer pressure chamber exerts an air pressure of equivalent confining pressure value to eliminate the influence on bulk variate caused by the deformation of the inner pressure chamber.
Owner:CHINA THREE GORGES UNIV +1

Preparation method for multi-component net-shaped nanofiber membrane

The invention relates to a preparation method for a multi-component net-shaped nanofiber membrane. The preparation method includes the detailed steps that step1, mixing and beating are performed on meta-position aramid fibers, halogen salt and organic solvent by the mass ratio of 1:0.004-0.4:2.996-18.6, and a meta-position aramid fiber solution is prepared through mixing; step2, functionality high-molecular polymers and the solvent are mixed by the mass ratio of 1:5.4-98.99, then nano-particles are added, and heating and mixing are performed to prepare a functionality high-molecular solution, wherein the mass fraction of the nano-particles in the solution is 0.01-5%; step3, the meta-position aramid fiber solution obtained in the step1 and the functionality high-molecular solution obtained in the step2 are mixed by the mass ratio of 1:0.05-0.5 in a dripping mode, and then ultrasonic treatment is performed to obtain a spinning solution; step4, under the conditions of 20 DEG C-30 DEG C indoor temperature and 20-70% relative humidity, the spinning solution is used for electrostatic spinning, and finally the multi-component net-shaped nanofiber membrane with a 5nm-20nm net-shaped nanofiber diameter and reaches over 95% in net-shaped structure coverage rate is obtained. The preparation technology is simple and low in cost, tensile strength of material reaches 100MPa-2000MPa, and the functionality advantage is remarkable.
Owner:DONGHUA UNIV

Single plate force-bearing reinforcing method of hollow slab bridge

The invention relates to a single plate force-bearing reinforcing method of a hollow slab bridge. The single plate force-bearing reinforcing method includes that the original bridge deck pavement is shoveled, hinge joint concrete is removed, defects and cracks of the original hollow slab bridge beam body are processed, strip-shaped steel plates are transversely pasted on the upper surface and the lower surface of the hollow slab bridge in the longitudinal bridge direction at certain intervals, split screws penetrate through drilled holes at the hinge joint position, a counter-force frame is arranged, a wedge-shaped block is embedded between the counter-force frame and the steel plates, and the steel plates are pressurized and pasted in sealing mode and then are positioned and fixed; the counter-force frame is demounted after sticky steel glue is cured; cavities in beam joints are subjected to pressure grouting, shear reinforcements are placed into the top surface of a hollow slab, a reinforcement mesh is reconstructed, and the bridge deck reinforcement mesh and the implanted reinforcements are connected in binding or point welding mode to form a whole body; steel fiber reinforced concrete is poured and waterproof coatings are sprayed; and bituminous concrete is paved. The single plate force-bearing reinforcing method improves transverse load distribution, steel plate pasting reliability and bridge integral force-bearing performance on the premise of preventing hollow slab beam body damage, not changing a structural force-bearing system and not interrupting the traffic.
Owner:CHINA MAJOR BRIDGE ENERGINEERING

Assembled joint node for column base and construction method

Provided is an assembled joint node for a column base and a construction method thereof. The assembled joint node for the column base can be used in a prefabricated reinforced concrete column, a reinforced concrete foundation, a column anchorage longitudinal rib, a grouting sleeve and a foundation anchor steel bar, wherein the foundation anchor steel bar is connected with the column anchorage longitudinal rib through a crack pouring material, and the grouting sleeve is filled full with the crack pouring material; a spliced seam of the reinforced concrete foundation and the prefabricated reinforced concrete column is also filled with the crack pouring material, and the foundation anchor steel bar comprises a vertical part and a horizontal part; the vertical part comprises an upper anchorage section, which extends beyond the upper surface of the reinforced concrete foundation, a middle no-bonding section, which is embedded in the reinforced concrete foundation, and a lower anchorage section; the outside of the middle no-bonding section is provided with an isolation suite which is used for isolating the the middle no-bonding section and preventing the middle no-bonding section from being bonded with concrete; the top surface of the isolation suite is aligned with the upper surface of the reinforced concrete foundation. According to the assembled joint node for the column base and the construction method of the assembled joint node, the deformation capability and the mechanical property of the node at the column base in an assembled structure, the construction is efficient, and the seismic performance is good.
Owner:CHINA STATE CONSTRUCTION ENGINEERING CORPORATION +1

Precession-type backfill grouting ground source thermal energy conversion precast pile device and method for embedding precast pile device into stratum

The invention discloses a precession-type backfill grouting ground source thermal energy conversion precast pile device, which comprises a plurality of precession-type backfill grouting prefabricated screw piles respectively embedded into pile holes, wherein a vertical heat exchanger is embedded in each screw pile; the inlet end and the outlet end of each vertical heat exchanger respectively extend out of an opening at the upper end of the screw pile to be respectively connected with a horizontal liquid-feeding collecting pipe and a horizontal liquid outlet collecting pipe in a bearing platform or a cushion layer; centring brackets are arranged at an interval of 1-3 m along the length direction of each vertical heat exchanger; each precession-type backfill grouting prefabricated screw pile comprises a hollow pile core, wherein the bottom of the pile core is provided with a cone-shaped pile head; a screw blade is arranged on the position far away1-3m from the lower part of the outer wall of the pile core; and a post grouting reinforcing layer is poured between the middle upper part of the outer wall of the pile core and a pile hole wall. The precession-type backfill grouting ground source thermal energy conversion precast pile device comprises a plurality of precession-type backfill grouting prefabricated screw piles, and the vertical heat exchanger is embedded in each screw pile; the pile foundation construction and the ground source heat pump construction are integrated so as to avoid a drilling and pipe-laying program of a ground source heat pump system on the ground, greatly lower the front-end investment cost and save the land use area; and the post grouting reinforcing layer is poured between the middle upper part of the outer wall of the pile core and the pile hole wall so as to enlarge a heat conduction area, improve the heat conduction performance and simultaneously improve the pile body bearing capacity.
Owner:CHINA JINGYE ENG +2

Method for preparing phase change asphalt pavement material

The invention relates to a preparation method for phase-change asphalt pavement material and is characterized in that the method comprises the following steps: (1), the preparation of phase-change asphalt modifier: firstly, selecting the materials based on the mass ratio among phase change material, coagulant, support material and coupling agent which is equal to 100:1-5:10-50:1-5; secondly, adding the phase change material into the silica sol, and then adding the coagulant dropwise to form gel; drying the gel, cooling the gel to room temperature and then taking out and mashing the gel to get powder through mixing; vacuuming the powder at 30-50 DEG C for 2-4 hours, then adding the support material under the protection of shielding gas; at 80-100 DEG C, adding the coupling agent for hydrophobic modification; then granulating to get the phase-change asphalt modifier; (2), the preparation of phase-change asphalt pavement material: firstly, selecting the materials based on the mass ratio among coarse aggregate: fine aggregate: filler, asphalt, fiber and phase change asphalt modifier which is equal to 100:10-20:1-8:2-6:0.2-0.5:2-10; then stirring the materials to get the phase-change asphalt pavement material. The phase-change asphalt pavement material prepared through the invention can improve the high temperature stability of pavement surface.
Owner:WUHAN MUNICIPAL CONSTR GROUP
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