78results about How to "Smooth flow" patented technology

The invention discloses a burst disaster warning system establishing method for a barrier lake in a data-lacking-area, and belongs to the technical field of disaster warning. The burst disaster warning system establishing method integrates four main processes, flood forecast, discharged flow drafting, dam bursting flood routing and disaster warning. The whole system is constructed as a complete platform, so that the process for inputting basic data and outputting warning signals can be realized, and flood forecast, dam bursting warning and flood routing can be carried out in the system. For calculation of the dam breach peak point flow, by means of deep research of a Xie Renzhi formula and integration with a physical model experiment, the soil coefficients and the flow coefficients for different ingredient barrier bodies can be obtained and the applicability of the formula to a barrier lake can be improved.

The invention discloses a dressing process for a plurality of sorts of slag mixed materials currently applied to domestic industrial production. The dressing process has better adaptability, and is suitable for the treatment of both mixed slag materials and slag materials generated by various smelting processes, thereby providing an effective way for reclaiming domestic copper slag resource. The dressing process not only has short process flow, less investment, low energy consumption, no pollution and lower production cost, but also breaks through index which cannot be realized by the prior common slag dressing process, thereby obtaining remarkable economical and social benefits. Therefore, the dressing process provides powerful technical support for realizing recycling economy strategy of copper resource from one aspect, and has wide application prospect in the field of copper slag dressing.

A catheter including one or more bidirectional valves is provided. The catheter includes a tubular body having proximal and distal ends, and inner and outer surfaces, and at least one valve formed near the distal end of the tubular body. The valve includes a deformation portion that defines a slit that is openable and closable. The openable / closable slit communicates from the inner surface to the outer surface of the tubular body, wherein the distance between the inner surface and the outer surface of the tubular body progressively becomes thinner approaching the openable / closable slit within the deformation portion.

The invention provides a wax mold combination of a four-connection hollow turbine guide vane, which has high product quality and can completely solve the problems that a rotary connection R part of an edge plate and a vane body is hotly cracked and loosened, and a precision casting method of the wax mold combination. The wax mold combination comprises a sprue cup and a straight pouring gate which is communicated with an outlet end of the sprue cup, wherein inner sprue assemblies are arranged on the side wall of the straight pouring gate; each inner sprue assembly comprises a lower edge inner sprue communicated with one side of a vane lower edge plate cavity, and an upper edge inner sprue communicated with one side of a vane upper edge plate cavity; and each lower edge inner sprue and each upper edge inner sprue are sequentially arranged along the flow direction of the straight pouring gate. The precision casting method comprises the following steps: (1) manufacturing the wax mold combination; (2) carrying out shell making on the wax mold combination prepared in the step (1) to obtain a four-connection hollow turbine guide vane shell; and (3) covering one layer of ceramic heat-preservation cotton on a shell vane body part and covering two layers of ceramic cotton on the whole shell; and putting the treated shell into a roasting furnace for carrying out casting.

The invention belongs to metal casting device. The magnesium alloy cast is complex, and the performance is bad. The invention is a magnesium alloy casting device which fills shape in vacuum state and solidifies them in various pressure state. It can realize the optimized casting process condition, it can be applied to produce each kind of large, complex, thin magnesium alloy casting piece with precise size and high thickness.

The invention provides a constructing method for a fish shelter under the stress of high silt concentration flood. The constructing method comprises the following steps that a suitable river reach is selected according to the water area fish resource state, a flood plain tidal wetland system is artificially constructed by adopting an ecological engineering measure, and the flood plain wetland hydrologic connectivity is improved so that the stress of the high silt concentration flood on fish can be avoided, specifically, A, the fish which needs protecting and the required habitat condition of the target fish are determined; B, the site of a shelter is selected; and C, the shelter is constructed. According to the fish shelter constructing method under the stress of the high silt concentration flood, a natural river bend on one side of a river bed and a wide river channel of a wetland can serve as construction areas under the condition that flood drainage is not affected; the continuity of the river channel is restored by excavating an overflow weir; the complexity and the hydrologic condition diversity of the river channel are improved; the shelter for sheltering the fish and other aquatic animals from the high silt concentration flood is provided; conservation of the species of the aquatic animals in a river is facilitated; and the contradiction between river water silt regulation and fish habitat protection can be effectively relieved.

The present invention discloses a charge pump based power supply for low voltage dynamic random access memory (DRAM), including a charge pump and a non-overlapping clock signal generator. The charge pump consists of a cascade of two pumps coupled in parallel. Each pump cascade consists of multiple pump stages connected in series between the supply voltage and the output node. Each cascaded adjacent stage is clocked at the opposite phase of the system clock signal. The charge pump drives the output node on the rising and falling edges of the system clock signal. The non-overlapping clock signal generator includes charge-sharing transistors controlled by equalization pulses generated by the outputs of latches that equalize the non-overlapping output clock signals by charge sharing during non-overlapping periods between system clock phases. The non-overlapping clock signal generator also includes transmission gates that ensure equalization of the non-overlapping cycles.

The invention discloses a barbecue oven which comprises an oven body, an oven cover used for sealing the oven body, a bottom frame used for supporting the oven body, a combustor used for combusting fuel and a feeding device used for conveying the fuel to the combustor. The combustor comprises a combustion chamber, a heating pipe, an air guide box and a fan, the heating pipe is arranged at the bottom of the combustion chamber, the fan is arranged on the box wall of the air guide box, the top of the combustion chamber is communicated with the bottom of the oven body, the bottom of the combustion chamber is embedded into the air guide box, and a ventilation opening communicated with the air guide box is formed in the combustion chamber. The feeding device comprises a hopper used for loading the fuel, a fuel guide pipe, a feeding screw rod arranged in the fuel guide pipe and a feeding motor used for driving the feeding screw rod to rotate. According to the barbecue oven, the feeding quantity of the fuel and the air volume of the fan can be automatically controlled, temperature in the oven can be changed evenly, and the heat preservation effect is good.

In order that pressure is always applied to a center part of a ball and ink flows smoothly, a ballpoint pen tip according to an exemplary embodiment of the invention includes: a ball that has a diameter of 0.7 mm or more; a tip main body that has a ball holder formed at a front end thereof so as to support the ball to be rotatable while a portion of the ball is exposed to the outside; an ink outflow gap provided within the center thereof so as to connect the ball holder and an ink storage area, which is assembled to an end portion of an end opposite to the front end; an elastic member that includes a center elastic portion that has a spiral shape, is formed in the ink outflow gap, and constantly applies force to the ball in a direction where the ball is exposed; a rear contact portion that is integrally formed with the center elastic portion at an end portion opposite to the front end of the tip main body and is supported by a support protrusion protruding toward the inside of the ink outflow gap so as not to be separated; a front contact portion that has one end portion integrally formed with the center elastic portion toward the front end of the tip main body and a linear pressing portion coming into contact with the ball at the other end portion; and a separation preventing protrusion that protrudes along an inner circumference of an end portion of the ink outflow gap toward the ball holder such that an end portion of the pressing portion of the elastic member is in contact with a center part of the ball.

The invention discloses an image accelerator and a related method. The image accelerator comprises a rasterization module, wherein, a rasterized first set of primitives becomes a first group of pixels and generates information of the first group of pixels; a process internal module acquires a pixel vale from a memory according to the information received from the rasterization module, then performs mathematical calculations to the pixel value and generates one or more processed image layers; and a process intermediate module that synthesis the one or more processed image layers received from the process inter module with other image layers received from the memory, outputs the synthesized image for displaying. The image accelerator and the related method can make the image rending process more smooth, and can greatly reduce or even avoid frame losing.

The invention provides a colored model three-dimensional printing method. A base material is adopted at first for printing a base material model, then the exterior of the base material model is colored, and a colored model is obtained. The method comprises the specific steps that colored model parameter data are obtained, and a colored model graph is obtained; the colored model graph is analyzed, and a skin layer and the base material model are obtained; the base material model is sliced, a layered graph is extracted, the colored area of the skin layer is cut, multiple single-color areas are extracted, and a spraying path is designed for each single-color area; and the base material model is printed according to the layered graph, and the base material model is sprayed with pigment to be colored according to the single-color areas and the spraying paths. The colored model three-dimensional printing method is beneficial to simplifying three-dimensional colored model coloring work and improving coloring quality and efficiency.

A shock absorber is provided with a damping force generating valve for a very low-speed range that includes: a non-seated leaf valve having a stacked structure; and an opposed part that faces the free end of a largest leaf of the leaf valve and forms an orifice with the fee end. The largest leaf and one leaf, and the largest leaf and another leaf are arranged separately from each other in the axial direction of a piston by the respective spacers. The one leaf includes a leaf element having cutout parts on the side facing the largest leaf. The another leaf includes a leaf element having cutout parts on the side facing the largest leaf.

A backflow prevention valve includes a cylindrical case member having a plurality of holes formed in an upper end at a periphery thereof, a valve member disposed in the case member to be movable in an axial direction thereof, an urging device disposed in the case member for urging the valve member upwardly, and a liquid inflow pipe extending outwardly from the case member. The valve member includes a sealing portion at an upper surface thereof for contacting a peripheral edge of an inflow opening to close the same, and a plurality of guiding arms provided on a peripheral edge of an upper surface of the valve member. The guiding arms are slidably disposed in the holes so that the valve member is supported and guided by the guiding arms passing through the holes.

The invention provides an ocean temperature conductivity profile survey probe. The ocean temperature conductivity profile survey probe comprises a protection cover, a fairing, a sensing measurement part, a diversion base and a sealed cylinder, wherein the sensing measurement part is arranged in the faring in a sleeved mode and composed of a tubular conductivity sensor and an arc-shaped temperature sensor, the protection cover is detachably connected with the fairing, and the middle of the protection cover is provided with a water inlet opening and a temperature sensor channel; the fairing and the protection cover form a shape similar to a bullet, and straight diversion trenches are symmetrically arranged on the side faces of the fairing; the diversion base is connected to the rear end of the fairing, and a Y-shaped T-joint diversion trench is arranged in the diversion base; the rear end of the diversion base is detachably connected with the sealed cylinder, and a via hole communicated with the sealed cylinder is formed in the diversion base. By the adoption of the ocean temperature conductivity profile survey probe, the problem that the structure and position of a sensor in the probe are not matched with the movement characteristics of the survey probe can be solved, and thermohaline measurement accuracy can be improved.

Provided is a method for manufacturing an element for a CVT belt, comprising a body portion (22L, 22R) having right and left sides and a tapered portion with a downwardly reducing width, a neck portion extending upward from the body portion, and a head portion extending upward from the neck portion. The manufacturing method comprises a first punching step in which a metal strip blank (31) which has a uniform thickness and a width which makes it possible to obtain elements arrayed on an even number of lines in an arrangement in which the head portions are opposed to each other or an arrangement in which the body portions are opposed to each other, is punched along an outline (33L, 33R) of an excess material (21b) added to profiles of the left and right sides (21L, 21R) of the body portion, and along an outline (58L, 58R) of an excess material (32b) added to a profile of a lower side (32L, 32R) of the body portion a plastic deformation step in which the blank is compressed in the thickness direction to form a predetermined projection and depression, and form the tapered portion while displacing the material in the outline directions and a second punching step in which the element is obtained as a product by punching the blank.

The invention provides a plasma fluidized bed powder processing device, which comprises a vertically arranged variable-diameter fluidized bed body, a microwave generator, a rectangular waveguide witha circular hole, a gas feeding system and a cyclone separator, wherein the variable-diameter fluidized bed body is composed of at least two circular tubes with different inner diameters; microwaves generated by a microwave magnetron enter the variable-diameter fluidized bed body through the coupling of the rectangular waveguide and generate plasmas in the bed body; the gas feeding system adds a single or mixed gas to the orifice of the variable-diameter fluidized bed body; and the cyclone separator is used for recycling the powder for re-circulation. The gas outlet on top of the variable-diameter fluidized bed body is connected with gas inlets of a vacuum gauge, an exhaust valve and the cyclone separator via a four-way pipe, and the gas outlet of the cyclone separator is connected to a vacuum pump through an angle valve and an accurate control valve which are connected in parallel; and the power outlet of the cyclone separator is communicated with the side surface of the variable-diameter fluidized bed body through a circulating guide pipe. The bottom circular pipe and the gas inlet of the variable-diameter fluidized bed body are provided with a gas distributor therebetween so as to enable the gas flow to be uniformly distributed and carry the powder.

The invention provides a method and a device for receiving processing data and a video server. The method comprises the following steps of: predefining a memory file model, wherein a read pointer, a read query method, a write pointer, a write query method and a memory file length are encapsulated in the memory file model; creating a memory file for each on-demand dialogue on a memory space; invoking the write query method to obtain the current writable data length of the memory file; if the writable data length is greater than zero, transmitting data request to a content delivery network according to the on-demand request, wherein the length of the requested transmitted data is not greater than that of the writable data; receiving and analyzing the data returned from the content delivery network; writing the analyzed data into the memory file, and updating the position pointed by the write pointer. The method using the self-defining memory file provided by the invention can read and write on a single memory, the utilization ratio of the memory is improved and the read-write speed is balanced, and thus the data processing is stable to smooth the push flow.

The invention relates to an elevation-type cigarette side-stream smoke aerosol rapid collecting hood and a detection method thereof. The elevation-type cigarette side-stream smoke aerosol rapid collecting hood comprises a collecting hood body, an electric elevation table and a base support, which are successively connected from top to bottom; the collecting hood body comprises a cylindrical hood body with an air inlet and a funnel hood body connected to the upper end of the cylindrical hood body in a sealing manner; the upper end of the funnel hood body is provided with a funnel hood body exhaustion pipe, the outer side of the funnel hood body exhaustion pipe is sleeved with a pre-dilution casing pipe, the bottom end of the pre-dilution casing pipe is fixed to the outer surface of the funnel hood body in a sealing manner, and the bottom is provided with a pre-dilution air inlet; the base support is fixedly provided with a smoke suction pipeline coaxially arranged with the collecting hood body; the smoke suction pipeline penetrates through the electric elevation table and a central hole of a bottom end cover of the cylindrical hood body and is connected with a smoke suction machine; a cigarette is fixed to the smoke suction pipeline by virtue of a cigarette clamping device and coaxially and vertically installed; and the electric elevation table is used for driving the collecting hood body to integrally move downwards, a descending speed is equal to a smoldering rate of the cigarette, and a distance from a cigarette burning cone to the inlet of the funnel hood body exhaustion pipe is ensured to be 15 to 20 mm.

The invention relates to a production method of a low hydroxy yellow doped quartz tube. The production method includes the steps: 1) selecting high-purity quartz raw materials; 2) placing reagents and the raw materials into a stirrer and uniformly mixing and stirring the raw materials; 3) continuously baking the uniformly mixed raw materials at high temperature; 4) throwing the baked raw materials into a continuous melting furnace for melting, drawing the raw materials by a tube drawing machine to prepare an integrally colored yellow quartz tube; 5) placing the drawn yellow quartz tube into a vacuum or air dehydroxylation furnace for high-temperature dehydroxylation. The production method is reasonable in design, smooth in flow, and the drawn yellow quartz tube can be more uniform in color and better in size and transmittance consistency.

The invention relates to a method for preparing coalbed methane hydrate. According to the invention, coalbed methane is processed with a gas distributor, and forms fine bubbles; the fine bubbles enter from the bottom of an internal circulation flow reactor, and contact a low-temperature and high-pressure water flow, such that a hydration reaction is carried out, and coalbed methane hydrate slurry is formed; and reaction heat is removed through a cooling unit. An internal circulation device is arranged in the reactor, such that a buoyancy regulation zone is formed. The separation efficiency of a gas-water-hydrate multi-phase system is promoted; precise control over a heat and mass transfer process is realized; and the gas content of the hydrate is improved. Unreacted gas flows through the internal circulation device, and separated from water and hydrate. The gas is then returned to the reactor. The hydrate slurry flows through the internal circulation device, and liquid-solid separation is realized; and the liquid and solid respectively flows through a light phase flow channel and a heavy phase flow channel. The hydrate slurry is discharged into a central storage tank, and is subjected to gas-liquid and liquid-solid separation. After the slurry is concentrated, the slurry is separated, such that a dry hydrate product is obtained. Separated unreacted gas and low-temperature water are returned to the reaction system. With the method provided by the invention, hydrate can be prepared continuously, stably and highly efficiently.

The invention relates to an energy-saving high-pressure water electrolysis hydrogen production tank. The energy-saving high-pressure water electrolysis hydrogen production tank is formed by combining and tensioning an anode end plate assembly, a cathode end plate assembly, a plurality of groups of circular polar plate frame assemblies and a plurality of groups of combined sealing gaskets with sealing lips by using a plurality of screw rods. Accessory polar plates are woven by using pure nickel wires and nickel-plated metal wires to form porous and multilayer combined grid plate structures with certain thickness and strength and are arranged at two sides of a veneer-type main polar plate; and a plurality of hexagonal or quadrangular gas and liquid channels are arranged in the radial and axial directions of each circular accessory polar plate. The accessory polar plates are fastened by using a plurality of stainless steel bolts arranged on the main polar plate. Due to the adoption of the structure, the gas and liquid can be kept smooth in the electrolysis process when the accessory polar plates are in a stressed state, the surface areas of the polar plates can be greatly increased, and the electrolysis efficiency can be increased. The energy-saving high-pressure water electrolysis hydrogen production tank is simple in structure and convenient and reliable in installation. Compared with the prior art, the energy-saving high-pressure water electrolysis hydrogen production tank has the characteristics of low manufacturing cost, energy saving, consumption reduction and the like so as to be an efficient and high-pressure novel water electrolysis hydrogen production tank.

The invention discloses an auxiliary welding device and a use method. The device comprises a main mechanism, the main mechanism is of a cavity structure, the main mechanism comprises an air inlet and an object containing opening, protection gas is led into the cavity from the air inlet, a to-be-machined part is arranged at the position of the object containing opening, the device further comprises a cover covering the object containing opening, a welding gun used for welding and a welding hole enabling a welding wire to stretch in and capable of implementing the welding process is formed in the cover, and the device has the beneficial effects that machining is carried out in protection gas which cannot affect the welding effect and can protect the to-be-machined part, due to arrangement of the cover, the gas amount led into the air inlet can be reduced, the contact area of the welding position of the external air and the to-be-machined part and the welding position is avoided, and the welding hole is arranged and ensures that welding is carried out while the protection gas is led.

The invention discloses a highway rainfall early warning device with a rainwater filtering structure. The highway rainfall early warning device comprises an outer box, a supporting base and a mounting plate, wherein the supporting base is mounted on the inner wall of the outer box through bolts, a water collecting hopper is mounted on the inner side of the supporting base, a flow detector is mounted at the bottom part of the water collecting hopper through bolts, a metering box is installed at the bottom part of the flow detector through a bolt, the metering box is fixed into the outer box through a bolt, a connecting piece is installed on the inner side of the bottom part of the metering box, a limiting belt is connected to the bottom part of the connecting piece, a floating ball is installed at one end of the limiting belt, a storage battery is mounted on the inner side of the bottom part of the outer box through bolts and located on one side of the metering box, and a mounting plate is mounted on the inner wall of the outer box through bolts. A filter screen in the highway rainfall early warning device is composed of the gauze element and used for filtering falling rainwater, the filter screen filters out impurities, and the impurities are prevented from affecting the detection accuracy of the detection equipment.

The invention relates to a sponge city street tree feeding system, which comprises a road, and a water collecting system for supplying water to grass and trees on two sides of the road, wherein the upper surface of a first impervious layer is a surface layer arranged in an S shape along the length direction of the road; a water outlet trough is arranged under the lowest water outlet surface of thefirst impervious layer along the width direction of the road. According to the sponge city street tree feeding system provided by the invention, when the water in an impounding reservoir is collected, by utilizing the first impervious layer arranged in the S shape, the water stored in the impounding reservoir automatically flows toward the inner part of the water outlet trough along a lower direction and flows into the impounding reservoir along the water outlet trough; the water outlet trough is hollow U-steel so that the water flows smoothly without being blocked; in addition, the bottom part of the impounding reservoir is the S-shaped layer, and the water outlet trough is arranged at the bottommost position of the S-shaped layer, so that the water accumulated in the impounding reservoir can automatically flow toward the inner part of the water outlet trough along the inclined surface of the S-shaped layer surface without being partially remained in the impounding reservoir.

The invention discloses an LED (Light Emitting Diode) lamp. The LED lamp comprises a lamp cover, a power supply box, an LED light emitting assembly and dustproof diversion cover sheets, wherein the lamp cover is in a cone-frustum shape in which a downward opening is formed, and multiple heat dissipation holes are formed in the side surface of the lamp cover and are distributed along the periphery of the lamp cover to form a heat dissipation hole group; the dustproof diversion cover sheets are positioned right ahead the heat dissipation holes and are adapted to the heat dissipation holes in shapes, the upper ends of the dustproof diversion cover sheets are connected with the upper ends of the heat dissipation holes, the lower ends of the dustproof diversion cover sheets are connected with the lower ends of the heat dissipation holes, and two diversion gaps are formed in two sides of space between each dust proof diversion cover and the lamp cover. By adopting the structure, hot air can smoothly flow from the diversion gaps in the lamp cover, heat on the surface of the lamp cover can be rapidly emitted, and the heat dissipation effect is good; the heat dissipation holes are shielded by the dustproof diversion cover sheets, thus the LED lamp has the functions of shading and dust prevention, and the whole appearance is attractive.

The invention discloses a compression plate connecting structure of a dust-collecting bucket component, comprising a compression plate, and an upright column which is fixedly connected with one side of the compression plate; a connecting shaft with a polygon hole, which is connected with the lower end of the upright column; a polyhedron gear shaft whose lower end is provided with a gear, which is matchedly connected with the polygon hole of the connecting shaft; a screw, which connects the upright column and the gear shaft; the upper end of the upright column is closed, the inside of the lower end is provided with a thread hole; the middle of the gear shaft is provided with a through hole; the lower end of the connecting shaft is provided with a concave opening, and the part of the lower end of the gear shaft which corresponds to the concave opening forms a convex table, and when the gear shaft is matched with the connecting shaft, the convex table of the gear shaft is matched with the concave opening of the connecting shaft for locating; the screw enters into the upright column through the lower end of the through hole of the gear shaft and is connected with and fastened with the thread hole of the upright hole, and connects the gear shaft and the upright column. The invention leads the air flow to be smooth, and reduces the noise of the air flow, and leads the assembling of the gear shaft and the connecting shaft to be convenient, and greatly saves labor hour.

An expandable and earthquake-proof pipe joint is provided to prevent the destroying of pipe joint by preventing the increasing of partial flow pressure and vortex which is caused by the inflow of fluid. An expandable and earthquake-proof pipe joint comprises a body, a packing, a flange, a pressing ring, a combining member, and a buffering member. One end of a pipe is inserted into the body. A level difference is formed at an end of the body in which one end of the pipe is inserted. An inner diameter of the body is expanded through the level difference. The packing seals the inner surface of the body and the outer surface of the pipe. The flange pressurizes the packing to a vertical plane of the level different part in the longitudinal direction of a pipe. The buffering member absorbs the expansion and contraction of the pipe.

The invention aims to provide a heart-imitating underwater propeller based on IPMC combined muscles. The underwater propeller is composed of IPMC combined muscle power components, a self-cleaning filter head, atrium pressure chambers, ventricle pressure chambers, a jet flow propelling part and a jet flow direction adjusting part. The self-cleaning filter part comprises an outer cover composed of filtering holes, a layer of filter screen is arranged inside, and a reflux hose is connected with a control valve and a three-way flow-splitting head; according to the atrium pressure chambers and the ventricle pressure chambers, the structure of each atrium pressure chamber III is mainly formed by a water inlet partition plate and the IPMC combined muscles, a piston on each atrium pressure chamber is provided with a water communicating one-way valve, each ventricle pressure chamber is formed by the IPMC combined muscle power component, a backflow channel, water outlet holes and the like, the pressure chambers are connected through the one-way valves, the whole atrium pressure chambers and the whole ventricle pressure chambers are arrayed in the shape of six parallel circumferences, and water flows out of the water outlet holes through the one-way valves. The heart-imitating underwater propeller has the advantages of being low in noise, disturbance and energy consumption and the like when the propeller works underwater.