114results about How to "Large cavity" patented technology

A method of using a bagged power generation system comprising windbags and water-bags for harnessing wind and water power to produce electricity to meet the escalating energy needs of mankind. Windbags integrated with aerodynamically shaped inflatable bodies filled with lighter-than-air gas: HAV, UAV, airplanes; enabling the apparatus to attain high altitude to capture and entrap high velocity wind. Water-bags integrated with hydrodynamic shaped bodies HUV, UUV, Submarine-boats; enabling the apparatus to dive, capture and entrap swift moving tidal-currents. Attached tether-lines pulling on the rotating reel-drums and generators to produce electricity. Active control surfaces, turbo-fans, propellers provide precision control of the apparatus. A system configured to maximize fluids capture, retention and optimized extraction of its kinetic energy. An extremely scalable and environmentally friendly method, system, apparatus, equipment and techniques configured to produce renewable green energy with high productivity and efficiency.

The invention discloses a header tank divided-flow heat-storage counter flow heat exchanger, which comprises a left header tank and a right header tank which are connected with a warm air water inlet, a warm air water outlet, a tap water inlet and a tap water outlet, wherein, a plurality of tap water heat-absorbing pipes are connected with the left and right header tanks; warm air heat supply pipes are connected through tap water heat-absorbing pipes; the warm air heat supply pipes are serially communicated with each other by heat supply communicating pipes; one end of each warm air heat supply pipe is connected with the warm air water inlet, while the other end is connected with the warm air water outlet; and a plurality of water insulation boards is alternatively connected the inside of the left and the right header tanks in order to separate the left and right header tanks to obtain the oriented flow channel. The counter flow heat exchanger of the invention has the advantages that: firstly the heat exchange efficiency is high and the temperature of the outlet water is high; secondly the joints of the heat supply pipes are arranged on the same level of axis line, which is suitably installed in household-measured users of the new heat supply pipe network unit, in particular to the needs of the three northeast provinces; thirdly the users can take a shower in the heat supply region of low temperature, and the heat-absorbing pipes at heat supply region of high temperature is free from scale formation; finally the counter flow heat exchanger is totally made of stainless steel, thereby saving brass pipe, reducing the cost and producing the clean water by exchange.

A hollow fan blade for the fan of an aircraft engine includes a blade base section (2) and a blade tip section (5) which are assembled at opposing faying surfaces (6, 6′) by a joining process. Starting from the respective faying surface, cavities (7, 9) are produced in the two blade portions (2, 5) which are dimensioned in accordance with the loads occurring in the respective blade areas. The joining weld (4) is in a low-loaded area. The blade base section and the blade tip section can be constructed of solid material with formed-in cavities. The blade tip section can also be a sheet-metal structure.

The invention discloses a production method and application of a porous polymer microneedle. The production method includes the steps of firstly, dissolving polymer into a solvent to obtain a polymersolution; secondly, filling the polymer solution into a microneedle mould; thirdly, freezing the whole microneedle mould filled with the polymer solution; fourthly, using freeze drying treatment to remove the solvent contained in the frozen microneedle to obtain the porous polymer microneedle, wherein the freeze drying treatment is performed under the pressure intensity of 0-100Pa. The productionmethod has the advantages that large-scale porous polymer microneedle production can be achieved by the simple and mild freeze drying technology, the technical problems that the production process ofthe porous polymer microneedle is complex, harsh in conditions, expensive, hard in pore structure, size and distribution control and difficult in large-scale production and application and the like can be solved; the produced porous polymer microneedle is applicable to tissue fluid extraction and transdermal drug delivery.

An applicator unit for applying slurry fertilizer beneath the soil with reduced soil displacement includes a spring-cushioned main mounting shank and a forward spring-biased coulter. A narrow applicator shank, mounted to the main mounting shank just above the surface of the soil, is oriented generally upright and includes a leading nose portion having a small low angle forward protruding tip and a tapered leading edge for forming a furrow without tilling the soil. The furrow is formed in four stages: by the small low angle forward protruding tip, the upright tapered leading edge of the sweep shank, by a bulge on each side of the casting near the soil surface, a slurry tube widens the slot further, facilitating the delivery of the slurry in the vertical slot. Swept back wings gently lift the soil to allow horizontal distribution of the slurry.

The invention discloses a lock catch type seal for an electric energy meter, which comprises a base and a seal cover arranged on the base, wherein the base is internally provided with a counter bore, a screw for fixedly connecting an electric energy meter body penetrates through the counter bore, the lower part of the seal cover extends into the counter bore of the base, the outer circumferential surface of the lower end of the seal cover is provided with an outwards-extending lug boss, an elastic bulge is circumferentially arranged on the inner wall of the counter bore in the base, and the lower end part of the elastic bulge inclines into the base and downwards extends and supports against the lug boss of the seal cover. The lock catch type seal for the electric energy meter has the advantages of no need of penetration of a seal wire, no need of alignment and matching of seal holes, long service life, convenience for installation and firmness in fixation, and completely meets the demand of automatic sealing of an assembly line; and on the premise of not damaging the seal of the electric energy meter, the electric energy meter can not be subjected to electricity stealing, thus having better anti-theft, anti-counterfeiting and anti-electricity stealing properties.

The invention relates to selenium / silica / gold nano composite particles as well as a preparation method and application thereof. The preparation method comprises the following steps: synthesizing selenium / silica nano-spheres, which are mainly formed by silica spheres and Se quantum dots dispersed in the silica spheres, through an inverse micro emulsion method, and coating the surfaces of the selenium / silica nano-spheres with mesoporous gold shells through a gold seed growth method to prepare the selenium / silica / gold nano composite particles. The selenium / silica / gold nano composite particles prepared with the method are mainly formed by the selenium / porous silica nano-spheres and the mesoporous gold shells coating the surfaces of the selenium / porous silica nano-spheres, the selenium / porous silica nano-spheres are mainly formed by porous silica spheres and Se quantum dots dispersed in the porous silica spheres, and the average particle size of the selenium / silica / gold nano composite particles is 90-100nm; and finally the prepared selenium / silica / gold nano composite particles are used for photothermal therapy, drug sustained release and CT imaging. The method is mild in reaction condition, the photothermal conversion efficiency of the prepared nano composite particles is high, and the application prospect is wide.

A dental implant guiding device is applied in guiding the drill of the drilling apparatus in different dimensions. The device includes a guiding module and a guiding seat. The guiding module contains at least one guiding unit where a sleeve with a cavity is disposed. A guiding hole and a guiding slot, where an opening at a fringe of the guiding unit is defined, are disposed at two sides of the sleeve. The guiding seat forms a first hole. At two sides of the first hole, a first guiding shank and a second guiding shank respectively corresponding to the guiding hole and the guiding slot are disposed. The second guiding shank slides into the guiding slot, which allows the first guiding shank inserting into the guiding hole for the drill to position at the center of the cavity of the sleeve, thereby achieving the fast positioning and friction reduction.