32results about How to "Speed up inflow" patented technology

An ocean current power generating apparatus using a dual-duct is provided. The ocean current power generating apparatus with dual-duct includes at least one power generating unit. The power generating unit includes a turbine (110, 710), an inner duct (120, 420, 720) and an outer duct (130, 430). The turbine has a shaft box (112, 412, 712). The turbine is located inside the inner duct. An outer diameter (D3) of an inflow side of the inner duct is less than an outer diameter (D4) of an outflow side of the inner duct. The outflow side of the inner duct is located inside the outer duct. An outer diameter (D1) of an inflow side of the outer duct is less than an outer diameter (D2) of an outflow side of the outer duct.

The invention relates to a sealing loop forming pump. A multi-port component (70) comprises a cylinder seat which is rotatingly disposed a housing (108) and consists of a plurality of cylinder seats of hydraulic cylinders (122) and a plurality of ports which is fixedly disposed on the valve plate (116) of the housing (108). A part of the ports are connected to the pressure chamber of the cantilever hydraulic cylinder, and the left are connected to an oil tank. A V-shaped groove which turns smaller forward is disposed at the end of each port opening which is at the same side of the rotation direction of the cylinder seat (112). The v-shaped grooves which are respectively disposed at the piston upper dead center and at the piston lower dead center are made bigger, while the v-shaped grooves which are disposed between the piston upper dead center and the piston lower dead center are made smaller.

The invention discloses a wind power generation unit blade reinforced with needle fiber and a fabrication process thereof. The blade comprises any one of laminated fiber fabric layers, a resin matrix material and glass fiber or carbon fiber, the glass fiber or the carbon fiber is vertically densely distributed in the laminated fiber fabric layers, and the resin matrix material is soaked between the laminated fiber fabric layers. The fabrication process comprises the following steps: preparing a die and layering the fiber fabric; performing needle punching on the carbon fiber or the glass fiber; pipe laying; forming enclosed space with seal tapes and vacuum bags; opening and pre-vacuumizing a vacuum pump; opening a resin inlet tube and a resin outlet tube to extract the resin matrix material; and curing the resin matrix material, and then demolding, forming and performing surface repair on the resin matrix material to obtain the wind power generation unit blade reinforced with the needle fiber. The wind power generation unit blade has the advantages of improving layer shearing strength of a blade material, being beneficial to vacuum infusion process and improving the strength of the whole blade. The fabrication process has the advantages of forming a quasi-3D braided material, being capable of reducing thickness and weight of the blade, and lowering blade cost.

The invention discloses and provides a multi-layer interconnection FPC with fast tin-conducting via holes, which has a simple structure, high material utilization rate, can quickly melt enough solder during welding, and has stable performance. Described a kind of method that multi-layer interconnection FPC realizes fast lead tin is that described lead tin via hole is arranged on described auxiliary output pad and the central position of described auxiliary input pad, the aperture of described lead tin via hole Set to 100um to 300um, the auxiliary output pad and the auxiliary input pad are both ring-shaped, the ring width of the ring is greater than 100um, and several gaps are set on the edge of the tin-conducting via hole, so There is at least one part of the ring without the notch or at least one part of the ring has a width greater than 100um after removing the notch, solder is melted into the tin guide via hole, and the main input pad and the auxiliary output solder The pads are connected by solder, and the main output pad is connected with the auxiliary input pad by solder. The invention is applied to the technical field of FPC production.

The invention provides an injection mould for a curved needle clamp. The injection mould for the curved needle clamp comprises a fixed mold and a movable mold, wherein the fixed mold is covered and compacted by the movable mold; a parting surface is formed in the combined part of the fixed mold and the movable mold; a mold core, a cavity and a pouring channel are formed in the fixed mold, wherein the bottom part of the cavity is formed at the top part of the mold core; the pouring channel is communicated with the cavity; the injection mould for the curved needle clamp comprises a first hole channel, a second hole channel and a mold picking block, wherein the first hole channel is horizontally formed in the fixed mold and communicated with the cavity; the second hole channel vertically passes through the parting surface and is communicated with the cavity; a drawing pin and an inserting pin are arranged and can be inserted into the first hole channel and the second hole channel; a horizontal through hole is formed at the lower part of the fixed mold; the mold picking block passes through the horizontal through hole and is connected to the bottom part of the mold core; and the pouring channel is provided with a rod-shaped pouring port which is provided with a circular cross section.

The invention relates to a segmented turbine blade of a hydraulic torque converter. The turbine blade is segmented in a position with a pressure value of 0 on a pressure surface; the blade near a turbine inlet part is a main blade; the blade near a turbine outlet is a tail blade; the main blade near the position with the pressure value of 0 on the pressure surface is a transition section; the transition section is formed by flatly shifting an original pressure surface to a suction surface by 2 / 5-3 / 5 of the blade thickness; and the position with the pressure value of 0 on the pressure surface is connected in an arc manner. The turbine blade is segmented on the edge of a high-pressure area of the pressure surface of the turbine blade; the turbine blade of the hydraulic torque converter is designed as two segments; the area transited from the main blade to the segmented place is formed by flatly shifting the original pressure surface to the suction surface by 2 / 5-3 / 5 of the blade thickness; and the position with the pressure value of 0 on the pressure surface is connected in an arc manner, so that the pressure of the pressure surface of a turbine can be increased, the torque of the turbine is increased, the torque conversion ratio is increased, and the purpose of improving the efficiency of the torque converter is achieved.

The invention provides a membrane filter plate. The membrane filter plate comprises a solid core plate and two membranes respectively arranged on two sides of the solid core plate, wherein an internal cavity is formed between each membrane and the solid core plate; the solid core plate comprises a middle plate body and a plate frame surrounding the middle plate body; edge positions of the middle plate body and the membranes are connected, and first grooves are formed at the joints of the middle plate body and the membranes; the first grooves are located on the surfaces of one sides, back on to the solid core plate, on the membranes. According to the membrane filter plate, the deformation stresses borne by the membranes due to the expansion of the membranes in a use process can be reduced, and the deformation of the membranes caused due to the deformation stresses can be relieved; meanwhile, the flow-out speed of filter liquid as well as the flow-in speed of washing liquid can be increased.

The invention relates to a minitype flue gas treatment device. The minitype flue gas treatment device comprises a dedusting upper chamber, a dedusting lower chamber, a bag type dedusting part, a mud removing part and a purifying pipe part. The purifying pipe part is arranged in the inner part of the mud removing pat, the efficiency is improved, the purifying effect is strengthened, the overall space of the equipment is also saved, the bag type dedusting part is improved to better accord with the specific composition of the flue gas, and the arrangement is compact and efficient. Through the above arrangement, the minitype flue gas treatment device is high in purifying efficiency, the use cycle of the consumable item is long, the turnover rate is low, and the purifying effect is good.

The invention discloses a vortex diode, which comprises an upper cover plate, a lower cover plate, a central tube shell, a tangential tube shell and the like; the central tube shell is divided into a central conical tube, a circular arc shrinking tube and a central straight tube from bottom to top; the lower end of the central tube shell is connected with the upper cover plate; the upper cover plate is abutted with the lower cover plate to form a vortex cavity; the central straight pipe is provided with guide blades; the tangential tube shell is tangent to the vortex cavity on the circumference and is divided into a tangential straight tube and a tangential conical tube from inside to outside; and the joint of the tangential tube shell of the vortex cavity is a circular arc transition region. The central tube is provided with the guide blades, the tangential tubes and the central tube are respectively provided with a conical tube structure, and the vortex cavity is divergent to increase the impedance ratio of the vortex diode; and the peripheral thickness of the vortex cavity is equal to the tube diameter of the tangential straight tube, the joint of the central tube and the vortexcavity is a large chamfer angle, the joint of the tangential tubes and the vortex cavity is circular arc transition, and the impedance ration of positive flow and reverse flow is 20 to 40.

The invention discloses a multiphase flow hybrid conveying pipeline resistance reduction device and a multiphase flow hybrid conveying pipeline resistance reduction method of a mine field. The multiphase flow hybrid conveying pipeline resistance reduction device and the multiphase flow hybrid conveying pipeline resistance reduction method are characterized in that: hybrid conveyed fluid is accelerated by a reducing pipe and then enters a device main body pipeline by a tangential inlet pipe; and an annular space between the device main body pipeline and a hot water reflow pipe forms a rotational flow. Due to different densities, oil phase, gas phase and water phase form layered circular flows in the device main body pipeline. The water phase is closely attached to the inner wall of the device main body pipeline, so that direct contact of oil with the pipe wall is avoided, and the conveying resistance is greatly reduced. The oil phase is positioned between the gas phase and the water phase and is driven by the gas phase and the water phase to be transferred towards downstream side. One end of the oil, gas and water three-phase hybrid conveying rotational flow resistance reduction device is connected with a hot water circulating system to heat the hybrid conveyed fluid, so that on one hand, the viscosity of crude oil in the hybrid conveyed pipe can be reduced, and on the other hand, gas can be expanded properly, and the air flow speed is increased. The multiphase flow hybrid conveying pipeline resistance reduction device and the multiphase flow hybrid conveying pipeline resistance reduction method have the advantages of adoption of a physical technology for resistance reduction, no toxicity, no pollution, low manufacturing cost, reliability in operation, good resistance reduction effect, capability of effectively preventing paraffin deposit and high promotion and application value.

The multi-port pump assembly (70) has a cylinder seat (112) rotatably arranged in the casing (108) and has a plurality of hydraulic cylinders (122) and a valve plate (116) formed on the casing (108) multiple ports. Some of the ports are connected to the pressure chamber of the boom hydraulic cylinder, and the remaining ports are connected to the oil tank. At the end of the opening end of each port, that is, the end of the same side of the cylinder block (112) in the rotation direction, a V-shaped groove that becomes smaller toward the front end is provided. The V-shaped groove set at the top dead center position of the piston and the V-shaped groove set at the bottom dead center position of the piston are made larger, and the V-shaped groove set at the position between the top dead center position and the bottom dead center position of the piston is made larger. Make it smaller.