17results about How to "Small circulation resistance" patented technology

This utility model discloses a multi-way valve, a thermal management system, and a vehicle. The multi-way valve includes a housing and a valve core. The multi-way valve has a first state in which the first flow port of the second flow channel is fully connected to the switching flow channel, and the first flow ports of both first flow channels are partially connected to the switching flow channel. Each first flow channel includes a first flow section and a second flow section that are bent and connected. The end of the first flow section away from the second flow section forms the first flow port, and the end of the second flow section away from the first flow section forms the second flow port. The angle between the central axis of the first flow section and the central axis of the second flow section of at least one first flow channel is α, where 120°≤α≤130°. The angle between the two sidewalls of the switching flow channel on the cross-section of the valve core is β, where 115°≤β≤135°. According to the embodiments of this utility model, by designing the values ​​of α and β to be within a suitable range, the flow resistance of the fluid within the multi-way valve can be effectively reduced.

The application discloses a dry-type transformer production equipment and belongs to the field of transformer production. The device comprises a rack, a negative pressure dust collection workbench arranged at the middle part of the rack, a support arranged above the negative pressure dust collection workbench, two groups of support plates arranged at the top of the rack, a driving shaft one rotatably arranged in one group of the support plates, a driving shaft two rotatably arranged in the other group of the support plates, and clamping pieces arranged at the output ends of the driving shaft one and the driving shaft two and used for clamping an insulating cylinder. The negative pressure dust collection workbench is arranged at the middle part of the rack to adsorb and blow away the copper scraps and insulating dust. A hierarchical pressure relief gas path composed of a buffer pipe, a gradually expanding inverted conical middle nozzle and a circular corner exhaust hole pressure reduction circular plate is arranged to weaken the high pressure of the air compressor starting and stopping transient peak value, and the hierarchical pressure relief gas path is cooperated with the air compressor to improve the yield of the dry-type transformer winding.

The utility model provides a kind of roasting furnace energy-saving smoke exhaust device, it is related to roasting furnace technical field, including flue gas pipeline main body, flue gas pipeline split body and support structure, the flue gas pipeline main body left and right sides are equipped with support structure, the flue gas pipeline split body is equipped in flue gas pipeline main body below, the flue gas pipeline main body is fixedly connected with flue gas pipeline split body and inside intercommunication, the utility model replaces traditional slope flue structure using direct connection type metal smoke exhaust device, constructs the efficient path of roasting furnace fire well mouth direct annular total flue. Especially designed reducing pipe perfect cover furnace mouth, effectively eliminates the local resistance at interface, cancels the slope flue and intercommunication cover, reduces flue gas flow resistance, the utility model is installed using hoisting mode, and recycling is carried out around the use of roasting furnace, by improving the pass rate of flue gas, effectively utilize flue gas waste heat to preheat graphite, save energy, achieve energy-saving production.

The utility model relates to the technical field of downflow evaporation cold technology, and specifically provides a downflow integrated evaporation cold all-in-one machine, adopts the structural form of half coil pipe half filler to integrate upper and lower box bodies, a fan, a water spraying system and the like into an integrated device, which is different from the downflow evaporation cold structure of the past upper and lower split body, the all-in-one machine is designed according to the integral type, cancels the bottom frame structure, reduces product cost, forms an advantage in price, the filler is detachable, maintenance is convenient, is equipped with multiple small diameter fans (8 level motors), within the energy-saving range stipulated in the new national standard, can select primary or secondary energy efficiency motor according to customer demand, conforms to the development demand of the high-quality direction of the industry energy saving, water saving, high efficiency, low noise and the like. The appearance of the all-in-one machine is planned and designed according to the size of a container, satisfies the overseas market demand, is compact in structure, saves installation space, and is reliable in operation.

This invention provides a highly integrated underground pressure regulating device, belonging to the field of gas pressure regulating boxes, comprising a ventilation venting signal tower and an underground pressure regulating box. The ventilation venting signal tower is connected to the underground pressure regulating box via a pipeline assembly. The underground pressure regulating box includes a box body and two integrated pressure regulating devices. The box body has two receiving cavities, each containing one integrated pressure regulating device. One side of the box body is connected to a main inlet pipe and a secondary inlet pipe, and the other side of the box body is connected to a main outlet pipe and a secondary outlet pipe. The main inlet pipe, one of the receiving cavities, and the main outlet pipe are connected; the secondary inlet pipe, the other receiving cavity, and the secondary outlet pipe are connected. An inlet valve is installed on each of the main and secondary inlet pipes, and an outlet valve is installed on each of the main and secondary outlet pipes. The purpose is to solve the problem of the large footprint of underground pressure regulating devices. The achieved technical effect is a reduction in the footprint.

The application discloses a multi-pass combined valve, and belongs to the technical field of valves.The valve comprises a valve body, one common pipeline and a plurality of branch pipelines arranged in the valve body; the common pipeline penetrates the valve body along the straight center of the upper and lower end faces of the valve body, and the end of the common pipeline located on one end face of the valve body is a common port, and the end of the common pipeline located on the other end face of the valve body is a common valve cavity; the plurality of branch pipelines are respectively connected with the common pipeline in the valve body; the plurality of branch pipelines comprise one inclined pipeline and a plurality of straight-through pipelines; one end of each straight-through pipeline is perpendicularly connected with the common pipeline, and an angle alpha is formed between the inclined pipeline and the common pipeline, and 0°< alpha < 90°. The inclined pipeline cooperates with the grouped straight-through pipelines, so that the size of the intersection nodes can be reduced, the medium residues and the flow dead angle can be reduced, the flow resistance and the processing difficulty can be reduced, the space utilization rate and the manufacturing cost can be considered, and the multi-system flow demand can be adapted.

This application discloses a cooling assembly for an electric motor, an electric motor, and a vehicle. The cooling assembly includes an inlet and an outlet arranged within a sealed cavity. Both the inlet and outlet are provided with cooling fluid inlets, forming a circulating flow channel within the motor and the sealed cavity. The middle section of the circulating flow channel is a disc-shaped cooling space, in which the cooling fluid directly contacts the winding unit. One of the orientations of the disc surface and the disc wall of the cooling space is the cooling fluid inflow direction, and the other is the cooling fluid outflow direction. In this application, the cooling fluid in the cooling space can form a diffuse inflow field surrounding the winding unit through the directional distribution of the inlet, ensuring sufficient contact between the cooling fluid and the winding unit. After heat exchange, the cooling fluid is led out by the outlet. The cooling fluid enters from the axial or circumferential end face of the cooling space and exits from the circumferential or axial end face, allowing the cooling space to cover the entire area of ​​the disc-shaped cooling space, significantly improving the heat dissipation effect.

The utility model relates to a hydraulic base which comprises a base body, a hydraulic flow channel is arranged in the base body, and the hydraulic flow channel comprises a hydraulic pump port connected with a hydraulic pump, a hydraulic motor port connected with a hydraulic motor and a channel enabling the hydraulic pump port and the hydraulic motor port to be communicated. And the channel is a round channel which is formed by drilling and has a smooth and straight inner wall. The utility model further relates to a wheel-side hydrostatic transmission continuously variable transmission which comprises a shell, a hydraulic pump, a hydraulic motor and a transmission gear set are arranged in the shell, and the hydraulic pump and the hydraulic motor are installed on the hydraulic base. According to the scheme, the hydraulic base and the wheel-side hydrostatic transmission continuously variable transmission have the advantages of being easy to manufacture, small in resistance of a liquid flowing channel and high in transmission efficiency, and are stable in performance and longer in service life.

The invention discloses a cooling assembly of a motor, the motor and a vehicle, the cooling assembly comprises an inflow piece and an outflow piece which are arranged in a sealing cavity in the axial direction, the inflow piece and the outflow piece define a cooling space, and the inflow piece and the outflow piece are each provided with a cooling fluid flowing opening. The winding unit comprises a cooling space and an outflow part, the outflow part is arranged in the cooling space so that cooling fluid can be injected into and led out of the cooling space, at least part of the winding unit penetrates through the inflow part to stretch into the cooling space and makes direct contact with the cooling fluid in the cooling space, and the extension length of the outflow part in the axial direction is larger than the extension length of the inflow part in the axial direction. Cooling fluid can form a cooling fluid flow field wrapping the periphery of the winding unit through directional flow distribution of the flow inlet piece, the cooling fluid is led out through the flow outlet piece after heat exchange is completed, the heat dissipation effect is guaranteed, the axial extension length of the flow inlet piece is smaller than that of the flow outlet piece, the heat exchange area can be increased, the flow speed of the cooling fluid in the iron core gap can be increased, and the heat dissipation effect is enhanced.

This utility model provides a low-temperature storage device for rice, relating to the technical field of low-temperature rice storage. It includes a low-temperature storage component, which internally houses a spiral assembly and a tilting assembly. An insulation component is located on the inner side of the low-temperature storage component. The low-temperature storage component includes a storage tank, with a ventilation pipe inside the storage tank. The spiral assembly includes a motor, with a drive shaft mounted at the bottom of the motor. A spiral conveyor is located outside the drive shaft, and a scraper is mounted at the bottom of the spiral conveyor. This utility model uses an electric motor to drive the drive shaft, which in turn drives the spiral conveyor. The scraper helps to scrape up the rice on the partition, and the spiral thrust of the conveyor pushes the rice at the bottom upwards, breaking up the dense layer formed at the bottom of the storage tank and promoting the circulation of cold air inside the storage tank, thereby ensuring storage quality.

The invention provides a reversing fan, an engine and a working method, relates to the technical field of engine cooling, and aims to solve the problem that a displacement sensor in an existing reversing fan is in a high-pressure oil environment for a long time, so that the detection precision and efficiency are insufficient. The internal space of the shell is effectively divided into the hydraulic working cavity and the isolation detection cavity which are isolated through fluid by means of the piston and the sealing assembly, the hydraulic working cavity is specially used for bearing high-pressure hydraulic oil to drive the piston to generate axial displacement and be in linkage with fan blade variable pitch, and leakage of the hydraulic oil is blocked through the sealing assembly; the displacement sensor assembly arranged in the isolation detection cavity can perform displacement reading in a pressure-free and oil-free dry environment, so that the sensor is prevented from being impacted by hydraulic oil pressure and soaked by fluid, and the accuracy and the operation stability of piston displacement detection are improved; and the service life of the electronic component is effectively prolonged.

The utility model discloses a kind of hot air uniform distribution structures of circulating oven, it is related to circulating oven technical field.The utility model includes oven body, rotatingly connected with rotating lever in oven body, the surface of rotating lever is fixedly connected with deflector, oven body one side is fixedly connected with shell, shell one side is fixedly connected with transmission motor.The utility model is set through transmission motor, can drive reciprocating screw rod to rotate, to drive threaded sleeve and connecting plate transverse movement, make scraper automatic cleaning dust on the surface of filter plate, effectively reduce hot air flow resistance, maintain the high efficient heat exchange performance of circulating oven, simultaneously, the gear plate of moving plate bottom is engaged transmission with gear, to drive rotating lever and deflector periodic swing, make hot air form dynamic uniform distribution in oven, avoid local overheating or drying uneven problem, not only improve the uniformity and stability of hot air distribution, can also reduce energy consumption.

This invention belongs to the field of tobacco paper technology, and provides a formed paper for use in paper filter rods and its preparation method. The formed paper has a three-layer gradient porous composite structure, including a permeable support layer, a high-efficiency adsorption layer, and a liquid-locking and anti-seepage layer stacked sequentially, with interconnected pores between the layers. The permeable support layer is formed from a permeable support layer slurry, the raw materials of which include low-beaten softwood pulp and cationic starch, obtained through gelatinization. The high-efficiency adsorption layer is formed from a high-efficiency adsorption layer slurry, the raw materials of which include enzymatically modified grafted fibers, tobacco-derived modified porous carbon carrier, tourmaline powder, and a foaming agent, obtained through a wet compounding and foaming process. The liquid-locking and anti-seepage layer is formed from a liquid-locking and anti-seepage layer slurry, the raw materials of which include enzymatically modified grafted fibers and modified pectin-chitosan composite adhesive, obtained through mixing and dispersion. This invention features high permeability, high tar selective adsorption rate, and high aroma retention rate.

The application provides a structure for reducing the flow resistance of a bearing cavity ventilation pipe, wherein the ventilation pipe is configured with an oil blocking structure protruding from the bearing cavity wall surface by a predetermined distance at one end of the ventilation pipe extending into the bearing cavity, the oil blocking structure is used for blocking the lubricating oil of the bearing cavity wall surface from entering the ventilation pipe along the ventilation air, and the lubricating oil of the bearing cavity wall surface cannot enter the ventilation pipe by gravity after being blocked. The scheme provided by the application significantly reduces the lubricating oil entering the ventilation pipe, significantly reduces the flow resistance of the ventilation pipe without increasing the diameter of the ventilation pipe, is beneficial to reducing the pressure of the bearing cavity, improves the sealing pressure difference under the condition that the sealing induced air pressure is the same, and prevents lubricating oil leakage.

The application relates to the field of vehicle silencers, in particular to a silencer assembly for a vehicle and the vehicle, which comprises a purification device, a first silencer and a second silencer, the air inlet end of the purification device is adapted to be connected with the air outlet end of an engine, the first silencer is arranged downstream of the purification device, and the second silencer is arranged downstream of the first silencer; wherein the first silencer is internally provided with a silencing piece, a plurality of silencing elastic sheets are arranged on the silencing piece and are spaced from each other, the second silencer is internally provided with a silencing cavity, a silencing pipe which is in communication with the first silencer is arranged in the silencing cavity, the silencing pipe is formed with a silencing hole which is in communication with the silencing cavity, through the plurality of silencing elastic sheets which are spaced from each other in the first silencer, the silencing elastic sheets are subjected to forced vibration under the impact of airflow, the vibration generates anti-phase sound waves to realize noise cancellation and energy dissipation of the noise, the influence of exhaust back pressure in the silencer assembly is reduced, and the contradiction between noise control and back pressure rise is balanced.

The application discloses a humidifying type plate air cooler, which comprises a frame, a wind circulation mechanism and a water circulation mechanism.The frame serves as the skeleton of the device.The wind circulation mechanism comprises an air inlet installed on the side wall of the frame, and the air inlet is communicated with an air outlet installed on the top end of the frame.A heat exchange plate bundle is installed in the air inlet and communicated with the air outlet.The water circulation mechanism comprises a water storage tank installed on the bottom of the frame, and the water storage tank is communicated with a spraying assembly, and the outlet of the spraying assembly is correspondingly arranged on the heat exchange plate bundle.The application solves the problems of the original finned tube surface easy to scale and difficult to clean, influences the process cooling effect of the device and the service life of the device, prolongs the service life of the device, reduces the air side resistance and the energy consumption of the device, and greatly reduces the operation cost and the overall investment cost of the device.

The present invention discloses a hierarchically porous CO2 adsorption material and a preparation method thereof. The hierarchically porous CO2 adsorption material is prepared by photocuring 3D printing a photosensitive resin made of a photopolymerizable ionic liquid monomer, an amino-containing comonomer, a multi-functional crosslinking agent, a non-reactive pore-forming agent, etc., and then removing the pore-forming agent by supercritical drying. The present invention realizes the molecular-level uniform distribution of amino active sites, avoids the defects of traditional post-modification processes, and successfully constructs a multi-level pore structure conducive to gas mass transfer by combining polymerization-induced phase separation and supercritical drying. The prepared material has excellent CO2 adsorption performance and cycle stability, with an adsorption capacity of 4.5 mmol / g at 25 °C and 0.1 MPa, and a performance retention rate > 95% after 5 cycles.