32results about How to "In line with the law of flow" patented technology

The invention provides an ecologically-friendly type axial flow pump structure for fishes to pass through. The ecologically-friendly type axial flow pump structure comprises axial flow pump blades, an impeller hub, a runner chamber, a guide vane hub and guide vane blades. One end of each guide vane blade is connected with the guide vane hub, and the other end of each guide vane blade is connected with a guide vane section pipeline. Blade inlet edges of the axial flow pump sweep forward in the rotating direction and downwards extend in the axial direction to form streamlines, and the wing-section heads of the sections of the axial flow pump blades are semicircular arcs. The radial radius of the impeller hub is gradually increased and then is gradually reduced in the liquid flow direction, and the radial radius of the blade inlet edges is maximal. A circular ring is welded to the inlet of the runner chamber. The number of the guide vane blades is not larger than five, and the guide vane inlet edges are the streamlines. A large space is formed by the guide vane inlet edges and blade outlet edges. According to the axial flow pump structure, the probability that the blades collide with the fishes can be greatly reduced, meanwhile, the death rate of the fishes after the fishes are impacted by the blades is reduced, and therefore the survival rate of the fishes is greatly increased, and various fishes can pass through the axial flow pump suitable for large-and-medium pump stations.

The invention discloses a steam dust collector, which comprises a base, a shell and a fan, wherein an air inlet is formed in the base; the shell is arranged on the base and air vents are formed in the sidewalls of the shell; an eddy current air duct is defined between the bottom wall of the shell and the base; the air inlet communicates with fluid in the eddy current air duct; the fan is arranged in the shell and comprises a motor and a heat radiating wind wheel which is connected to the lower end of a motor shaft of the motor, wherein the eddy current air duct is such configured that air entering from the air inlet is guided to the heat radiating wind wheel so as to radiate heat of the motor. According to the steam dust collector disclosed by the invention, by defining the eddy current air duct, which has functions of collecting flow and offering circumferential circulation before the air flows to the fan, between the shell and the base, the air can circulate in the eddy current air duct in a mode of gradually contracting. Therefore, the steam dust collector is conducive to air circulation towards the heat radiating wind wheel, so that the heat-radiating air is more aligned with flow regularity, and air circulation is promoted.

The invention discloses an efficient air-condition structure for a ship, which is convenient for entering into a cabin and is time-saving and labor-saving, high in production efficiency, easy in controlling assembling quality and simple in maintenance. The air-condition structure for the ship comprises at least one air-condition system, wherein the air-condition system comprises a compressor (2), an oil-gas separator, a condenser (4), a throttle valve and an evaporator (3); each air-condition system is provided with a frame (5) for supporting; the compressor (2), the condenser (4) and the evaporator (3) are detachably connected with the frame (5) respectively; and when two frames (5) or more frames exist, the adjacent frames (5) are detachably connected.

The invention relates to a full automatic steam food boiling device, comprising a material boiler, a steam generator, a water tank, a valve, a water pipe and material suppliers; each material supplier comprises a material storeroom, a supplying control mechanism and a material pipe; the material storerooms of all the material suppliers are connected with a charging port by the material pipes; the supplying control mechanisms are arranged on the material pipes between the material storerooms and the charging port; the water tank, the steam generator and the lower part of the material boiler are sequentially connected by the water pipe. The upper part of the material boiler is connected with the upper part of the water tank by the water pipe; the valve is arranged on the water pipe between the water tank and the steam generator. Materials are directly boiled by adopting high temperature steam, the utilization rate of the steam is high and a greater energy-saving effect is realized; the high temperature steam is input from the lower end and achieves a stirring action, so the materials are more uniformly heated, the heat transfer is accelerated, the boiling time is shortened and the food boiling device is suitable for the fast food industry; the steam is collected into the water tank for reuse instead of being directly discharged to avoid air pollution and greater environment-friendly and sanitary effects are achieved.

The invention provides a low-pressure rotational flow bubble type nozzle. The low-pressure rotational flow bubble type nozzle comprises a flow distribution chamber, a tangential water inlet pipeline,an axial water inlet pipeline, a mixed flow pipe and a gas-liquid mixing cavity; an outlet of the flow distribution chamber is communicated with each the tangential water inlet pipeline and the axialwater inlet pipeline, the outlet of the axial water inlet pipeline is communicated with the mixed flow pipe, and a rotational flow device is arranged in the axial water inlet pipeline and used for generating rotational flow to enter the mixed flow pipe; the outlet of the tangential water inlet pipeline is in tangent connection with the mixed flow pipe and is used for generating tangential flow; the mixed flow pipe is used for converging the rotational flow and the tangential flow; the gas-liquid mixing cavity is communicated with the mixed flow pipe, and the outlet of the gas-liquid mixing cavity is connected with the nozzle. The low-pressure rotational flow bubble type nozzle provided by the invention can generate rotary bubble type water drops, not only increases the cleaning area and enhances the cleaning effect, but also has the massage and striking effect, the blood circulation of the human body is promoted, and the human body has more comfortable skin feeling.

A supersonic integrated nozzle design method, related to the field of wind tunnel testing; including the following steps: step (1), establish a nozzle model, including contraction section, expansion section, test section and boundary layer; step (2), according to TG The characteristic line equation of the section curve obtains the TG section curve; obtains the AD section curve according to the characteristic line equation of the AD section curve, and obtains the complete curve of the outer wall of the expansion section; step (3), calculates the displacement thickness of the boundary layer; obtains the boundary layer curve Step (4), obtain the complete curve of contraction section; Step (5), obtain the complete curve of test section; The present invention makes test area increase, and test section Mach number root mean square deviation, axial Mach number gradient and airflow Parameters such as deflection angle meet the advanced indicators of the national military standard.

The invention provides a guiding type nozzle capable of generating a rotational water flow. The guiding type nozzle comprises a water inlet pipeline, a water outlet pipeline and a transition pipeline,wherein the water inlet pipeline, the transition pipeline and the water outlet pipeline communicate in series to form a nozzle channel; the guiding type nozzle further comprises a fixing shaft, a guide vane body wheel hub and guide vanes; the fixing shaft is placed in the nozzle channel through fixing baffles; the guide vane body wheel hub is supported on the fixing shaft by a bearing; the guidevanes are disposed on the guide vane body wheel hub; one end of the transition pipeline is connected with the water inlet pipeline through a first trumpet-shaped contraction pipeline; the other end ofthe transition pipeline is connected with the water outlet pipeline through a second trumpet-shaped contraction pipeline; the diameter of the transition pipeline is smaller than the diameter of the water inlet pipeline; and the diameter of the water outlet pipeline is smaller than the diameter of the transition pipeline. The guiding type nozzle is capable of generating the rotational water flow,thereby reducing water consumption and cleaning well.

The invention belongs to a field of the visual simulation of a flood routing. Aiming at realizing the three-dimensional dynamic whole-process simulation of the storm surge and the flood routings, the safety management of seawalls, a quick scientific assessment of the storm surge disaster, and the scientific formulation and the implementation of rescue and relief work, the technical scheme provided is the three-dimensional dynamic whole-process simulation of the storm surge and the flood routings, comprising the following steps: (1) establishing three-dimensional mathematical models of the storm surge and the flood routings in complex flooding areas; (2) drawing bathymetric charts of the storm surge and the flood submerging in complex flooding areas (3) dynamically simulating liquid phase flows of the storm surge and the flood routings in complex flooding areas; (4) carrying out the dynamics calculation of the storm surge and the flood routings in complex areas; (5) establishing virtual-real coupling models of the storm surge and the flood routings in complex areas; (6) carrying out the post processing and the visual output of the three-dimensional dynamic whole-process simulation. The method is mainly applied in the three-dimensional dynamic whole-process simulation of the storm surge and the flood.