70 results about "Single stage" patented technology

A power tool includes a housing, a motor being controlled to run at a speed between 15,000 rpm and 32,000 rpm, an output spindle, a rotary impact assembly configured to transmit rotational motion with intermittent rotational impacts from a cam shaft to the output spindle, a hammer of the rotary impact assembly having an inertia between 400 kg·mm2 and 3,000 kg·mm2, and a single stage compound planetary transmission including a first planet gear meshed with a sun gear and a second planet gear meshed with a ring gear, the compound planet gear being carried by a planet carrier to achieve a gear reduction ratio between 14:1 and 30:1. The power tool is configured to achieve a fastening torque of at least 900 foot-pounds (a) in a time of less than 3.5 seconds, and / or (b) with an input energy of less than 2,500 Joules.

A power tool includes a housing, a motor being controlled to run at a speed between 15000 rpm and 32000 rpm, an output spindle, a rotary impact assembly configured to transmit rotational motion with intermittent rotational impacts from a cam shaft to the output spindle, a hammer of the rotary impact assembly having an inertia between 400 kg·mm2 and 3000 kg·mm2, and a single stage compound planetary transmission including a first planet gear meshed with a sun gear and a second planet gear meshed with a ring gear, the compound planet gear being carried by a planet carrier to achieve a gear reduction ratio between 14:1 and 30:1. The power tool is configured to achieve a fastening torque of at least 900 foot-pounds (a) in a time of less than 3.5 seconds, and / or (b) with an input energy of less than 2500 Joules.

The invention relates to a light-weight type planetary line gear reducer which comprises a sun gear, a planetary gear, an inner gear ring and a planetary carrier which are all light-weight type line gears, the sun gear is located in the center of the inner gear ring, the sun gear and the planetary carrier are both coaxially and rotationally installed on the inner gear ring, and the planetary gear is installed on the planetary carrier in a heteroaxial rotation mode and can rotate around the axis of the planetary gear. And the tooth surface normal of any contact point of the planet gear is collinear with the tooth surface normal of the corresponding contact point of the sun gear and the inner gear ring at the same time, the contact line is a cylindrical spiral line, and the transmission ratio and the spiral radius are decoupled. Through the space curve meshing theory, the reduction ratio exceeding 30 can be achieved through a single stage, the stage number of the planetary reducer is reduced, the force flow transmission path is remarkably shortened, the overall weight is reduced, and meanwhile the bearing capacity and reliability are improved; the technical problems that in the prior art, when the large reduction ratio is achieved, the multi-stage series connection structure is complex, the weight is increased, the transmission and positioning precision is reduced, and the load dispersing capacity is limited are systematically solved.

To provide a system capable of operating re-pellet production and PP band production from a simple flexible container in an almost unmanned state.SOLUTION: This system is equipped with a first single stage extruder 2 for pelletizing the crushed product of a used simple flexible container bag 1 and the single stage extruder 2 has a cylinder 21, a laser filter, a dual piston screen changer 3 and a die part 24. The crushed product supplied to the single-stage extruder 2 together with pellets as necessary is melted at a temperature of 190 °C or higher and 230 °C or lower, sewing threads contained in the melted crushed product are removed with a screen of 120 mesh or less using a laser filter, and foreign matter is removed with a screen of 120 mesh or less using a screen changer 3 or the like. The first recycled resin melt from which the sewing threads and foreign matter have been removed is pelletized in the die part 24.SELECTED DRAWING: Figure 2

The application relates to the technical field of high-speed centrifugal blowers, and discloses a single-stage air-floating blower which comprises an outer shell body, an inner shell body, a first end cover, a second end cover, a third end cover, a fourth end cover, a stator, a rotor shaft, a thrust disc, a volute body, a gas compression impeller, a main fan, an auxiliary fan, a radial air-floating bearing and an axial air-floating bearing. The main fan is arranged to cool the stator, the rotor and the radial air-floating bearing, the auxiliary fan is arranged to cool the axial air-floating bearing, and after the auxiliary fan cools the axial air-floating bearing, the cooling gas in the channel can flow into the cooling channel of the main fan. Compared with the previous air-floating blower scheme, the cooling efficiency between the stator and the rotor is improved, and the air amount entering the axial air-floating bearing is increased by arranging the auxiliary fan.

The stage capable of fixing the equipment comprises an aluminum alloy steel frame and a plurality of stage plates installed on the aluminum alloy steel frame, a through hole is formed in the middle area of each stage plate, the inner walls of the two sides of each through hole are jointly connected with a movable plate in a rotating mode, and three fixing assemblies are evenly arranged on the top of each movable plate. The three fixing assemblies each comprise a fixing base, the fixing bases are fixedly connected with the movable plate, pressing rods are placed at the tops of the fixing bases, and stroke holes penetrating to the bottoms are formed in the tops of the pressing rods. According to the utility model, through the arrangement of the through hole, the movable plate, the fixed assembly, the shadow weight, the mounting groove, the shell, the self-locking driving assembly, the transmission assembly and the connecting shaft, the movable plate can be turned over when needed, so that the fixed assembly is located above a stage, and the ground microphone can be pressed and fixed conveniently; and the falling and breaking of the floor microphone caused by the conditions of accidental touch, user emotion excitation misoperation and the like are avoided.

A single stage water separator apparatus (1) comprises: a water separator housing (2) comprising a water separation chamber (3) and a water collection chamber (4); a water-carrying volume inflow port (8) defining a water-carrying volume inflow channel (11) for directing a water-carrying volume flow into the water separation chamber (3); a water volumetric flow outlet port (10) defining a water volumetric flow outlet channel (12) for directing a water volumetric flow out of the water collection chamber (4); an unloaded water volume flow outlet port (9) defining an unloaded water volume flow outlet channel (13) for directing an unloaded water volume flow out of the separation chamber (3); and an immersion tube (5) comprising an immersion tube portion (7) immersed in the water separation chamber (3) and for fluidly connecting the unloaded water volume outflow port (9) with the water separation chamber (3).

The invention provides a fan and electric equipment, and belongs to the field of fans. The fan comprises a centrifugal impeller, an air inlet cover, an axial flow impeller and a fluid director. The air inlet cover is arranged on the outer side of the centrifugal impeller in a covering mode and provided with an air inlet located in the upstream of the centrifugal impeller and an air channel communicated with the air inlet and used for guiding airflow to be exhausted in the axial direction of the draught fan. The axial flow impeller is arranged at the downstream of the air duct and is used for doing work on air flow exhausted by the air duct; the fluid director is arranged on the downstream portion of the axial flow impeller and used for guiding airflow exhausted from the axial flow impeller to flow in the axial direction of the draught fan. Compared with a single-stage acting structure, the fan and the electric equipment provided by the invention are more beneficial to improving the overall pressure rise and suction capacity and reducing noise, so that airflow is stably output in the axial direction, and the quality of an airflow outlet flow field and the energy utilization efficiency are improved.

The invention belongs to the technical field of water treatment, and particularly relates to a modularized multi-stage membrane distillation synchronous concentration device and method. The device comprises one or two of a concentration module and a desalination module, the concentration module and the desalination module comprise the following devices which are stacked in sequence: a concentration piece, a porous membrane and a vacuum piece; each group of the sequentially stacked devices forms a membrane separation unit, and the number of the membrane separation units is one or more. The system adopts an innovative multi-stage modular expansion framework, and the core of the system is an inter-stage isolation structure based on gradient pressure balance. The whole process integration of front-end desalination and impurity removal, middle-end gradient concentration and tail-end pure water production is realized in the same set of plate and frame type assembly. According to the structure, the hydrophobic microporous membranes and the plate frame type assemblies are alternately stacked to form the concentration chamber and the desalination chamber, flexible expansion from a single stage to multiple stages is supported, and high concentration and desalination application scenes with different scales and treatment requirements are perfectly adapted.

Preform design is a crucial step in hot forging of metals. Embodiments of present disclosure provide a method and system of generating preform design for single stage hot forging of metals. The method optimizes the preform geometry using three key aspects: geometry, grain size, and forging force by a multi-objective optimization technique. Initially, parameters of a preform of a product and a single stage hot forging press are obtained which are used to generate initial set of geometric variations of the preform using a multi-objective optimization technique. This set is refined iteratively for a predefined number of iterations. At each iteration, a fitness value associated with each geometric variation is computed based on geometry, grain size, and force fitness value, and a new set of geometric variations are generated based on the fitness value which is used in the next iteration.

1. Name of the designed product: water suction pump (single-stage cyclone). 2. Use of the designed product: for pumping water. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The invention relates to the technical field of wind power generation, and discloses an offshore large-scale wind power plant micro-siting method, device, equipment and product, which considers the influence of different wind directions to accurately calculate a wind speed value and can more truly reflect the wind energy resource condition during the actual operation of a wind driven generator. Furthermore, by taking the total generating capacity as a guide, through a particle swarm optimization algorithm, the wake effect is optimized for different wind conditions, the influence of the wake effect on the generating capacity of the wind power plant can be reduced on the premise of ensuring the solving efficiency, and meanwhile, through collaborative optimization, the splitting property of optimization only in a single stage in a traditional method is avoided, and the optimization efficiency is improved. And the overall power generation efficiency of the wind power plant is effectively improved. And finally, according to the optimized optimal layout position of the wind driven generator, a target layout scheme of the to-be-built offshore large-scale wind power plant is determined, actual construction can be guided, reasonable layout of the wind power plant in the planning stage is guaranteed, wake flow loss is reduced, and the power generation level of the wind power plant is improved.

The utility model relates to a kind of evaporators of high-efficiency gas-liquid separation, a kind of evaporators of high-efficiency gas-liquid separation, including first cylinder and the first head connected in the bottom of the first cylinder, the evaporator further includes second head, the second head is covered in the first head portion and with the first head forms first cavity, in the second head surface also be provided with the first steam inlet of first cavity.This embodiment's high-efficiency gas-liquid separation evaporator is heated twice by using first cavity design, that is, by the first head and second head form first cavity, by setting first steam inlet in first cavity, the problem of insufficient heating efficiency of traditional single stage is solved, so that the material not fully separated obtains supplemental heat energy, fully separates again, improves production efficiency and precision.

The present application relates to the technical field of carbon emission in new energy comprehensive utilization, and provides a wind-solar-storage hydrogen-ammonia-alcohol project full life cycle carbon emission quantification method and system, through collecting activity data, carbon emission factor data and project design life of each stage of the project life cycle, determining the full life cycle accounting boundary covering the collection of raw materials to the end of life, and respectively carrying out carbon emission quantification for the early preparation stage, construction stage, operation and maintenance stage and decommissioning stage, finally the total net carbon emission of the project full life cycle is obtained by summarizing, so that the characteristics of the wind-solar-storage hydrogen-ammonia-alcohol project system, such as complex composition, multiple links and various data types, can be targeted, a unified carbon emission quantification path with stage corresponding relationship is established, the problems of unclear boundary and incomplete results caused by the existing method of only accounting for single equipment, single process or single stage are avoided, and the systematization and integrity of the full life cycle carbon emission accounting are improved.

The invention relates to a concrete skewback segment crack simulation analysis method, and belongs to the field of concrete construction. According to the technical scheme, the concrete skewback segment crack simulation analysis method comprises the following steps that S1, simulation analysis basic conditions are determined, specifically, concrete damage parameters are set, and finite element software is selected; s2, constructing a concrete skewback segment simulation model by adopting an extended finite element method, defining a level set function to characterize a crack interface through a level set method, and constructing a displacement function by adopting a discontinuous shape function; s3, setting a concrete crack initiation criterion and a concrete crack propagation direction criterion; and S4, anti-cracking simulation analysis is conducted on the construction stage and the operation stage of the skewback section, and the cracking state and stress field distribution of skewback section concrete are obtained. According to the method, the anti-cracking performance under the load effect in the operation stage is evaluated, the whole-stage cracking state and the stress field distribution rule are output, a whole-cycle data support is provided for engineering practice, and the problem that single-stage analysis and evaluation are one-sided in the traditional technology is solved.

The utility model discloses a kind of high-performance single-stage transmission gearboxes, it is related to gear box field, including gear box and the high-speed shaft being set to gear box inside, the outside wall of gear box is equipped with heat sink by bolt fixation;The side of gear box is equipped with oil inlet pipeline, and the one end of oil inlet pipeline is fixedly provided with oil inlet flange, and the pipe wall of oil inlet pipeline is fixedly provided with multiple branch pipes, and the one end of multiple branch pipes is fixedly provided with pipe joint, and the top of gear box is fixedly provided with multiple lubricating passages, and lubricating passage is communicated with the oil tank of each part in gear box needing lubrication.The utility model improves heat dissipation efficiency by heat sink and external circulation lubrication design, reduces heat accumulation;Adopt high-speed bearing configuration and conical surface sealing structure, solve bearing failure and oil leakage problem under high speed;Gear modification reduces noise, welding joint inner baffle prevents air-permeable cap oil leakage, and can be modified using existing casting box, save cost.

1. Name of the designed product: pipe pump (vertical single stage). 2. Use of the designed product: for conveying liquid on the pipe. 3. Design points of the designed product: in shape. 4. Picture or photo best showing the design points: perspective view 1.

This invention discloses a control method for a assignable joystick for stage equipment, comprising the following steps: S1, dynamically assigning control of the physical joystick to a single stage device or a predefined equipment group consisting of multiple stage devices based on the stage control interface; S2, automatically loading the corresponding control mapping rules and joystick behavior configuration according to the assignment target; S3, adaptively and dynamically adjusting the force feedback intensity, dead zone size, and stroke damping of the physical joystick according to the device type and real-time load of the assignment target to provide a matching device operation feel; S4, sampling the analog signal generated by manipulating the physical joystick through a high-precision ADC and converting it into control commands; S5, sending the control commands through the device control channel to drive the single target device or target device group to move smoothly according to an S-shaped speed curve, and updating the real-time status data of the device and the control assignment information of the joystick to the global status data model.

A single stage servo valve assembly comprising: a drive assembly (1000); and a valve body assembly (2000), the valve body assembly defining a valve body (2001) extending along a valve body axis (X) between a first valve body end and a second valve body end; a supply port (101), a control port (102) and a return port (103) formed through the valve body each defining a respective fluid flow channel, having a fluid flow axis, providing fluid communication between an interior of the valve body and an exterior of the valve body, wherein the drive assembly operates to control the flow of fluid between the supply port, the control port and the return port, via the interior of the valve body, in response to an electric command signal; wherein a first nozzle (201A) is located in the valve body between the supply port and the control port and a second nozzle (201B) is located between the return port and the control port, the first nozzle defining a first fluid flow path from the supply port to the control port and the second nozzle defining a second fluid flow path between the control port and the return port; wherein the drive assembly comprises a flapper means (501, 510) extending in a direction essentially perpendicular to the valve body axis from a first end in connection with the drive assembly to a second end that extends into a space (S) between the first nozzle and the second nozzle, the second end being moveable by means of the drive means, relative to the nozzles; the assembly characterised in that the drive means comprises a first motor (600A) located on a first side of the valve body and a second motor (600B) located on a second side of the valve body opposite the first side as defined with respect to the valve body axis, and wherein the flapper means comprises a first elongate flapper (501) extending along a first flapper axis YA from a first end (502) in driving engagement with the first motor to a second end (503) in the space (S), and a second elongate flapper (510) extending from a first end (511) in driving engagement with the second motor along a second flapper axis YB to a second end (512) in the space (S), wherein the second end of the first flapper is located adjacent the first nozzle and the second end of the second flapper is located adjacent the second nozzle.

A method for producing at least two hollow bodies (3, 4), each having an opening (1, 2), on a multi-stage press, in which a semi-finished product (5) is first heated to a forming temperature and then formed in one or more successive forming steps into a pot-shaped molded part (6) which has a base section (10) and the two hollow bodies (3, 4), each having different diameters (d1, d2), which are arranged concentrically and in a stepped manner and are connected to one another by an annular web (8) arranged substantially transversely to a central axis (7) of the molded part (6), and in which the base section (10) of the molded part (6) is subsequently removed and the hollow bodies (3, 4) are each separated from the annular web (8) by axially directed shear forces, wherein the removal of the base section (10) from the molded part (6) and the separation of the hollow bodies (3,4) from the annular web (8) in a single stage of the multi-stage press.,

The utility model discloses a device for preparing deuterium-depleted water by utilizing multi-stage cascade membrane distillation, and mainly solves the problems that the existing hydrogen isotope water separation device is complicated in structure and process flow and higher in early-stage equipment arrangement cost. The device comprises a raw material supply device, a plurality of M * N cascade membrane rectification modules, a cooling water device, a heating device and a condensation collection device, wherein M represents the number of rows and is greater than or equal to 1; n represents the column number, Ngt; 1. Compared with a traditional water rectification scheme, the membrane rectification device is small, low in manufacturing cost and convenient to operate; through the reasonable cascade design, the next stage can utilize the waste heat of the raw material water of the previous stage, the heat loss of the raw material water in the cold and hot circulation process is reduced, and compared with a single stage, the energy consumption can be reduced; meanwhile, through multi-stage cascade connection, the defect that the single-stage membrane distillation separation factor is low is overcome, the deuterium abundance of the deuterium-depleted aquatic product is reduced, and the overall yield is increased.

The fixed flow regulating valve comprises at least one valve body unit, and each valve body unit comprises a valve sleeve, an upper-layer valve plate, a lower-layer valve plate and a valve element. The upper-layer valve plate and the lower-layer valve plate are located in the valve sleeve, and valve holes used for forming small hole throttling for liquid flow are formed in the upper-layer valve plate and the lower-layer valve plate correspondingly. The valve element is located between the upper-layer valve plate and the lower-layer valve plate, the valve element is provided with a structural part in an isosceles triangle shape, vortex mixing throttling of liquid flow is formed on the side face of the structural part, and reverse flowing throttling of the liquid flow is formed at the end of the bottom side of the structural part; and collision throttling of liquid flow is formed between the bottom side of the structural part and the lower-layer valve plate. According to the regulating valve, a special-shaped channel is formed by the valve plate, the valve element and the valve sleeve, so that multiple links and multiple types of throttling effects of small hole throttling, vortex mixing throttling, reverse flow throttling and collision throttling can be carried out on liquid flow in a single stage, the throttling effect of single-stage throttling is enhanced, and the size of the valve is reduced.

The dental handpiece telescopic handpiece comprises a speed reduction part and a telescopic part, the speed reduction part comprises a transmission shaft and a gear, one end of the transmission shaft is connected with a power source, and the other end of the transmission shaft is connected with a connecting gear; the telescopic part comprises a fixed transmission shaft, a telescopic assembly and a movement assembly, one end of the fixed transmission shaft is connected with the gear, the other end is connected with one end of the telescopic assembly, and the other end of the telescopic assembly is connected with the movement assembly; the telescopic assembly comprises a telescopic transmission shaft and a shaft sleeve sleeving the telescopic transmission shaft, the telescopic transmission shaft extends into an inner cavity in one end of the fixed transmission shaft, the shaft sleeve wraps the outer wall of the fixed transmission shaft, and the telescopic transmission shaft and the shaft sleeve can slide relative to the fixed transmission shaft. The machine head adopts single-stage speed reduction and is low in noise, high in transmission efficiency, simple in structure, convenient to assemble, high in production efficiency and low in cost, and the telescopic transmission shaft can stretch and retract relative to the fixed transmission shaft, so that the distance between the machine head assembly and the fixed transmission shaft is adjusted, and a user can treat teeth at different positions conveniently.

A fuel tank shutoff valve assembly configured to selectively vent fuel vapors from a fuel tank to a vapor recovery canister includes a housing having an inlet and an outlet. The valve assembly is fluidly coupled between the fuel tank and the vapor recovery canister. The inlet is fluidly coupled to a vapor space of the fuel tank and the outlet is fluidly coupled to the vapor recovery canister. The housing generally defines an inlet cavity, a flow passage cavity defining a flow passage cavity axis, an overpressure relief (OPR) cavity defining an OPR cavity axis, and an outlet cavity. The flow passage cavity axis and the OPR cavity axis are collinear.

The present disclosure relates to a cryogenic cleaning device comprising a body and an attachment element for attaching the body to a vacuum chamber of an analytical instrument to provide a fluid path between the body and the vacuum chamber. The surface is configured to accumulate gas molecules received into the body via the fluid path by condensing and / or adsorbing the gas molecules on the surface when cooled by the single stage refrigeration system. The pump is configured to pump accumulated gas molecules during baking of the cryogenic cleaning device. A valve of the cryogenic cleaning device is movable between a first position, in which the fluid path is open to allow the gas molecules to exit from the vacuum chamber into the body, and a second position, in which the fluid path is closed to prevent the gas molecules from being received into the body.

The invention relates to DC fault management in a power system. Embodiments herein provide a protection method (700) of protecting a modular multilevel converter (80) for DC fault protection in a symmetric single stage configuration. The MMC for each of the at least one phase comprises a branch (70) comprising a first branch and a second branch, the second branch comprising pilot valves connected in series. Furthermore, the branches of the MMC (80) are connected in series between the DC poles (25, 30). The method (700) comprises measuring DC pole voltages relative to a common ground and determining a DC fault (21) accordingly identifying a DC pole-to-ground fault of one of the DC poles. Upon determining the DC fault, the method (700) includes controlling a pilot valve (52, 54) of a second branch (55) of each branch (70) to bypass the DC poles through the second branch (55) for protecting the DC poles other than the DC poles identified with the DC fault.

This invention offers a solution for optimizing wind energy production. The Biomimetic Nurse Shark Turbine (BNST) derives its design from the hydrodynamic shape of a nurse shark's tail, applied to a horizontal-axis turbine. It integrates into the air manifolds of an Aero-MINE system as a single stage or stacked in multiple stages. The turbine is powered by the accelerated airflow in the Aero-MINE's intake duct. The wind blowing over the Aero-MINES creates a low-pressure zone between the airfoils, designed according to NACA duct principles, allowing the air to be channeled through internal ducts. This air is then routed to a manifold, where it drives the TBRN turbine and a generator located inside the structure, thus generating electricity. This biomimetic system reduces dependence on fossil fuels by producing clean wind energy. It minimizes CO2 emissions, with a potential reduction of up to 4 million tons of CO2 equivalent per year through integration with existing stand-alone photovoltaic systems on commercial buildings. Aero-MINEs are designed for modular use, integrated into buildings or as standalone units.

A system for processing oil and gas at an offshore facility includes a single stage separation module. A gas stream from the single stage separation module is pressurized in a primary compressor, and then is used to heat the incoming oil and gas upstream of the single stage separation module. Flash gas from treatment of an oil stream from the single stage separation module is pressurized in a flash gas compressor and then is used to heat glycol utilized in a gas dehydration unit. The pressurized flash gas is then commingled with the gas stream from the single stage separation module upstream of the primary compressor.

The invention relates to a radial single-stage pump (1) having a pump impeller (3) which comprises a plurality of guide vanes (3a) which extend in an axial direction. The invention further relates to a sensor cleaning device (6) having a radial single-stage pump (1) of this type and to a vehicle (7) having a radial single-stage pump (1) of this type or a sensor cleaning device (6) of this type.

The utility model relates to the technical field of automobile damping equipment, in particular to a two-in-one bipolar damping support capable of effectively reducing vibration of an air compressor. The support comprises an adapter piece, a limiting pin, a damping bolt, an elastic damping piece and a buffer gasket, wherein a threaded hole for screwing the damping bolt is formed in the adapter piece; the limiting pin is provided with a U-shaped mounting position which extends up and down and is used for mounting the damping bolt, and a mounting hole is formed in the bottom of the U-shaped mounting position for the damping bolt to penetrate through; the periphery of the limiting pin is provided with an installation groove used for installing the elastic damping piece. The damping bolt is sleeved with a damping spring, a spring bush is arranged in the U-shaped installation position, and the damping spring is located between the head of the damping bolt and the bottom face of the spring bush. The buffer gasket is arranged at the bottom of the limiting pin and provided with a penetrating hole for the damping bolt to penetrate through. The technical problems that in the prior art, a single-stage damping support is single in damping frequency band, and a two-stage damping support is complex in structure, difficult to produce and limited in arrangement are effectively solved.