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

The invention discloses a stepless adjustment device for the air quantity of a reciprocating compressor intake valve. The stepless adjustment device is characterized that a rotating valve sheet arranged in a T shape with a transmission shaft is fixedly connected to the bottom end of the transmission shaft and is driven by the transmission shaft, and the rotating valve sheet is in coaxial fit withan upper seat and a bottom seat; an output shaft of a stepper motor is connected with the transmission shaft through a coupling; the rotating valve sheet is mutually spaced from a valve sheet sector hole through a valve sheet sector surface, and the upper seat and the bottom seat form a valve sheet sector passage by mutually aligning an upper seat sector hole and a bottom seat sector hole; when the valve sheet sector surface rotates to the position of the valve sheet sector passage, an air valve is closed; and when the valve sheet sector hole rotates to the position of the valve sheet sector passage, the air valve is opened. According to the stepless adjustment device disclosed by the invention, the stepless adjustment of the air quantity of a reciprocating compressor within the range of 0-100% can be realized.

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 gas-liquid distribution device applied to a filler partition board rectifying tower. The gas-liquid distribution device comprises a V-form gas distribution structure, a liquid distribution structure, a convex fixed structure and a base plate, wherein the V-form gas distribution structure comprises V plates and gas distribution caps and is made of a metal steel plate material, and rising gas is uniformly distributed to two sides of a partition board by the gas distribution caps of the V-form gas distribution structure; the liquid distribution structure is formed by uniform liquid descending tanks, and descending liquid flows through liquid descending round holes in the liquid descending tanks and then is distributed to a lower end of the gas-liquid distribution device in a linear manner; the convex fixed structure is just located at the upper end of the partition board to fix the position of the partition board; the base plate is a semi-circular steel plate, square holes and air inlets are uniformly formed in the base plate, and rising gas enters the gas-liquid distribution device through the air inlets in the base plate. According to the gas-liquid distribution device applied to the filler partition board rectifying tower, gas and liquid phases are effectively distributed on two sides of the partition board, the partition board in the center of the filler partition board rectifying tower is effectively fixed, and meanwhile, a wall flow phenomenon in the partition board tower is effectively alleviated; the gas-liquid distribution device is convenient to mount and maintain.

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 relates to a double-layer current collector and a mixed flow fan provided with the double-layer current collector. The double-layer current collector comprises an outer layer current collector, an inner layer current collector and struts; and the inner layer current collector is coaxially arranged in the outer layer current collector, and the outer layer current collector and the inner layer current collector are connected through the multiple struts in the radial direction. The mixed flow fan based on the double-layer current collector comprises the double-layer current collector, an impeller, a wheel cover, guide vanes, a casing and a motor. The scheme is reasonable, the structure is simple, implementation is easy, and by means of the current collector, the advantages of the mixed flow fan can be sufficiently achieved.

The invention relates to a vena cava filer with a swirling guider, and belongs to the field of medical equipment. The invention aims to solve a problem of thrombus blockage after the traditional filter is implemented in the vena cava. The swirling vena cava filter is composed of two parts, namely a swirling guider part and a conventional umbrella-shaped filter screen, and the two parts are combined into an integral whole. The swirling vena cava filter is characterized in that the spiral distance in a spiral structure which is from small to big along the opening direction of the filter screen ranges from 5 to 20 millimeters, and the section of a spiral metal wire takes the shape of a circle with the diameter being less than 2 millimeters. The swirling guider of the filter has the function of enabling blood stream to move rotatably, and can increase the flowing shear stress and better scour the filter screen at the same time, thereby achieving the purpose of preventing or alleviating thrombus blockage, and having important clinical application values.

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 three-dimensional inward turning type air inlet channel flow field distortion suppression method based on an RBF network, and the method comprises the steps: preliminarily designing an air inlet channel model based on an osculating flow principle, recognizing a low-energy flow form, obtaining a low-energy flow distribution condition on each section, and adjusting the osculating surface pressure based on the RBF network; replacing original coordinates by position coordinates passing through RBF interpolation points, forming a new air inlet channel model. Extra energy loss and flow field distortion caused by too large circumferential pressure gradient of the air inlet channel can be avoided on the design level, and in combination with the distance attenuation characteristic of a radial basis (RBF) network, on the premise that second-order derivability of an osculating plane contour line and continuous flow field parameters are guaranteed, And pressure correction is conducted on the distortion generation area, the flow loss in the air inlet channel is reduced by eliminating the circumferential pressure gradient, the effective flow area is enlarged, and the comprehensive compression efficiency of the air inlet channel 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.

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 relates to a device and method for collecting flue dust of an oven side-wall door and an oven top of a stamp charging coke oven. A dual-port flap valve group is formed after a pluralityof dual-port flap valves disposed corresponding to each carbonization chamber are communicated. A bottom opening of each dual-port flap valve is an oven side-wall flue dust connector. First self-weight fallback type flap valves are disposed in connecting pipes. A smoke guide vehicle is provided with a first hydraulic push rod used for opening the first self-weight fallback type flap valves to allow the oven side-wall flue dust connectors to be in a communicating state. A side opening of each dual-port flap valve is an oven-top flue dust connector. The side openings are provided with second self-weight fallback type flap valves. The top of a telescopic butt-joint guide sleeve is provided with a second hydraulic push rod used for opening the second self-weight fallback type flap valves to allow the oven-top flue dust connectors to be in a communicating state. The first hydraulic push rod and the second hydraulic push rod are disposed at two ends of the smoke guide vehicle respectively. The device and the method effectively overcome a problem that simultaneous discharge of oven side-wall door flue dust and oven-top flue dust is difficult. Effective communication areas of the oven side-wall flue dust connectors and the oven-top flue dust connectors are increased, thus reducing running resistance.

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 discloses an integrated exhaust device applied to agricultural vehicles. The integrated exhaust device comprises an exhaust tube. The integrated exhaust device is characterized in that a plurality of fixing pieces are arranged on the exhaust tube; a connection piece is arranged at the front end of the exhaust tube; an exhaust tail hood is arranged at the rear end of the exhaust tube; and furthermore, the exhaust tube is made of a hollow stainless steel tube; and a backpressure-free helical helix is arranged inside the exhaust tube. The integrated exhaust device has the functions of purifying the tail gas, saving the energy, being safe and reducing the noise; and due to the backpressure-free helical design, the air flow can uniformly pass through layers, so that the effective flowing area is greatly increased, and the exhaust backpressure is greatly reduced. The integrated exhaust device is a stainless steel tube which is attractive in appearance, resisting in high-temperature and acid-base and long in service life; and moreover due to the integrated mode, the weight is light. The integrated exhaust device is long in service life, that is, the service life is more than 10 years, the structure is simple, and the installation and the maintenance are convenient.

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.