41results about How to "Increase the effective circulation area" patented technology

The invention provides a steam-water separation corrugated plate, comprising two crook-free corrugated plates.Middle corrugated segments of the two crook-free corrugated plates are connected through a connecting plate, straight segments at two ends of a combination of the two crook-free corrugated plates are tightly fixed side by side, and a double-layer hollow plate structure is formed; a drain passage forms in the hollow between the two crook-free corrugated plates, and the double-layer hollow plate structure is provided with a drain port.The invention also provides a corrugated plate steam-water separation device.The corrugated plate steam-water separation device is compact in structure and easy to assemble, special crooked drain channel part is not required any more, a flow field in a passage of the separation device is smoother, and resistance coefficient of the passage of the corrugated plates is reduced; manufacture precision of the corrugated plates is improved, and production cost is reduced; with the long drain passage, effective pass area of a drain channel is enlarged, and the ability of the corrugated plate separation device to drain water is improved; the corrugated plate steam-water separation device is useful in separating water particles in steam / water or air-water mixed medium.

The present invention relates to an electrostatic discharge protection device utilizing multicrystal silicon layout to hierarchically construct electrostatic current dumping channel. It is characterized by that in P trap on the P-type substrate N+injection zone several plane array arrangements is set, along peripheral side wall of every N+injection zone a shallow trench isolation STI with square-ring type is set, over P trap a grid-shaped multicrystal silicon layer is set, the inner wall of said grid is correspondent to the outer wall position of said shallow trench isolation STI. The grid node position of said multicrystal silicon layer is P-type multicrystal silicon zone or N-type multicrystal silicon zone, and between the multicrystal silicon layer and P-type substrate a SiO2 oxide layer is set.

The invention discloses a filtering element and a preparation method of the filtering element. The filtering element comprises a smoke filtering element body arranged in a toxicant filtering tank, wherein the smoke filtering element body is in a shape of a space revolution surface; a revolution bus is a digital function of a sine wave; an equation of the revolution bus is as follows: y is equal to f(x); all particles on an entity of the body are located on a concentric circle rotating around a cylindrical central axis, namely an OX axis, of the toxicant filtering tank; and therefore, a dimension of a smoke filtering element or a forming grinding tool of the smoke filtering element is calculated according to the following formula which is as shown in the specification during a detailed design. According to the filtering element and the preparation method of the filtering element, the filtering element is convenient to machine, good in stability, ageing resistance, corrosion resistance and water resistance, and low in cost, and improves and increases efficiency and a safety degree of a prefilter.

The invention provides a steam-water separation corrugated plate, comprising two crook-free corrugated plates.Middle corrugated segments of the two crook-free corrugated plates are connected through a connecting plate, straight segments at two ends of a combination of the two crook-free corrugated plates are tightly fixed side by side, and a double-layer hollow plate structure is formed; a drain passage forms in the hollow between the two crook-free corrugated plates, and the double-layer hollow plate structure is provided with a drain port.The invention also provides a corrugated plate steam-water separation device.The corrugated plate steam-water separation device is compact in structure and easy to assemble, special crooked drain channel part is not required any more, a flow field in a passage of the separation device is smoother, and resistance coefficient of the passage of the corrugated plates is reduced; manufacture precision of the corrugated plates is improved, and production cost is reduced; with the long drain passage, effective pass area of a drain channel is enlarged, and the ability of the corrugated plate separation device to drain water is improved; the corrugated plate steam-water separation device is useful in separating water particles in steam / water or air-water mixed medium.

The invention relates to a curved-surface bow-shaped folded-plate tube shell type heat exchanger. The invention comprises a heater exchanger tube. The heater exchanger tube is connected with tube plate, and is provided inside with a the tube bundle passing through a group of tube holes of the bow-shaped folded plate and are fixed between the tube plates in the way of being parallel to axis; the folded plate is evenly fixed by the drawbar and the distance-fixed tube along the axis parallelly; the drawbar and the distance-fixed tube are fixed on the tube plate, the outer side of which is connected with tube box; the bow-shaped folded plate is the curved-surface bow-shaped folded plate, the outer convex side of which is directed at the inlet of the shell-process fluid; a group of bow-shaped folded plate gaps is arranged in a staggered way at intervals from top to bottom horizontally or from left to right vertically in order to form the circuitous flow channel of the fluid inside the tube. The heat exchanger of the invention has the advantages of improving the flow-speed distribution of the shell-process fluid of the bow-shaped folded plate, effectively increasing the circulation area, reducing 'dead zone', obviously improving the efficiency of the heat exchange and reducing the drop of the pressure in comparison to the flat-plated type bow-shaped folded plate.

The invention belongs to the field of offshore drilling and particularly relates to an operating process of an offshore drilling shore-based supporting mud plant system. The system adopted by the operating process comprises a mobile pump skid integrated unit, a movable slurry preparing tank integrated unit, a movable storage tank integrated unit, a waste liquid treatment skid integrated unit and pipes, a control system and the like for connecting the integrated units. The operating process achieves drilling fluid preparation, transfer and recovery treatment functions and the like by conducting switching control on a working valve in the mud plant system. In the mud plant system, the integrated units are formed by setting different functions, quick transfer and quick assembly of a whole shore-based supporting mud plant can be achieved, the efficiency is high, and the economic benefits are very remarkable.

The invention provides a cross-flow fan which comprises a cross-flow wind wheel, a chassis volute, an evaporator, a front volute tongue and a water receiving disc, wherein the chassis volute is provided with a curved inner surface, is covered on the outer side of the cross-flow wind wheel, and comprises a wind outlet section, a wind inlet section and a rear volute tongue; the wind inlet and the wind outlet both extend downward; the wind outlet side of the water receiving disc is also provided with a wind outlet guide plate extending downward from the lower direction of the front volute tongue; the wind outlet guide plate and the longitudinal wall of the front volute form a wind guide angle; and the tangential point of the cross section curve of the rear volute tongue and the water level is a point A, and an included angle formed between the connecting line of the point A and the central point of the cross-flow wind wheel and a vertical line passing through the central point O of the cross-flow wind wheel is theta, and theta is greater than or equal to 45 degrees and less than or equal to 55 degrees. The cross-flow fan provided by the invention has an optimized air channel structure, is high in wind rate, and is low in noise.

The invention discloses an air suction valve sheet structure for a refrigeration compressor. The structure comprises a valve sheet body, an external reed, an exhaust hole, an installation hole, a throttle hole and an internal reed, wherein the external reed has a two-arm reed structure; the internal reed is arranged on the inner side of the external reed; and the exhaust hole is formed on the internal reed. In the air suction valve sheet structure for the refrigeration compressor, the maximum width size of a sealing area of the larger external reed can be selected on the premise of not increasing motion energy consumption so as to improve the effective circulation area of an air suction valve and contribute to improving the efficiency of the compressor.

The invention discloses a small separation blade for stability enhancement of a rotor of an axial flow compressor. The small separation blade comprises rotor blades, a rotor blade hub, small separation blade bodies and a fixing device; each small separation blade body is installed between every two rotor blades in a rotor blade grating channel, and flow control of the small separation blade bodies over fluid in rotor channels is carried out; the axial positions of the small separation blade bodies are located at the axial chord length positions of rotor blade roots at the 20% positions of the front edges of the rotor blade channels, the circumferential positions are located at the circumferential chord length positions of the rotor blade roots at the 4.6% positions of suction force faces of the rotor blades, and the small separation blade roots are connected with the rotor blade hub; the blade tops of the small separation blade bodies are connected with the suction force faces of the rotor blades through connecting pieces so that the small separation blade bodies can be fixed; and a complex inducing vortex structure generated after air flow flows through the small separation blade bodies will disturb flowing laminar sub-layers of interface layers of the suction force face of a main blade, and strengthening of tubulence energy enables flowing of laminar flow of a boundary layer to be changed into turbulent flow in advance, so that separation of the boundary layer of the laminar flow is restrained or delayed, and the steady operation margin of a compressor is improved.

The invention discloses an anaerobic reactor comprising a three-phase separating device, wherein the three-phase separating device comprises a gas releasing device arranged at the outer side of a coaming, and a precipitating device and a water distributing device, which are arranged at the inner side of the coaming, the precipitating device comprises a water channel composed of a plurality of thin plates or pipelines forming included angles with the vertical direction, a water outlet groove is communicated above the precipitating device, a mud bucket is arranged below the precipitating device, the precipitating device and the mud bucket form a hollow cavity, a mud outlet is arranged at the bottom part of the precipitating device, one end of the water distributing device is communicated with the gas releasing device, the other end of the water distributing device is communicated with a water distributing tank at the inner side of the coaming, and a plurality of holes communicated with the hollow cavity are formed in the water distributing tank. Since the water channel composed of the plurality of thin plates or pipelines forming included angles with the vertical direction, muddy water can pass through areas except the plate thicknesses of the thin plates or the wall thicknesses of the pipelines, so that compared with gaps between gas collection covers, the area of the separated sludge flowing back to the reaction region is greatly increased, which improves the muddy water separation effect so as to greatly improve the hydraulic load.

A mixed-flow fan with a sinusoidal meridian flow channel, including a motor, casing, impeller, guide vane and collector; the inside of one end of the casing is coaxially fixed with a guide vane, and the motor is arranged at the center of the hub of the guide vane; the motor The output shaft is fixedly connected to the center of the impeller; the other end of the casing is provided with a current collector on the same side as the impeller; the diameter of the hub of the guide vane is the same as that of the impeller; the invention has reasonable scheme, simple structure and easy realization , can give full play to the advantages of the mixed flow fan. The fan has compact structure, large air volume, low noise and high static pressure efficiency.