39 results about "Planar flow" patented technology

To provide a seat pad capable of appropriately integrally molding a flow path lid and a duct with a pad body while suppressing leakage of a foaming raw material and to provide a mold for the seat pad.SOLUTION: The seat pad includes a pad body having a recessed ventilation passage 14, a planar duct 30 forming an inner peripheral wall of the ventilation passage 14, and a planar flow passage lid 20 covering the ventilation passage 14. The duct 30 and the flow passage lid 20 are molded in a predetermined shape in advance, and are foam-molded integrally with the pad main body. The flow passage lid 20 is set on a back surface side forming surface 5a in an overlapped state, and has a lid bending part 24 bent to the sheet surface side so as to form a recess capable of receiving a bank part 5b projecting from the back surface side forming surface 5a in its peripheral edge part 23. The duct 30 has a seat surface part 34 extending along a region deviated from the ventilation passage 14. The seat surface part 34 is applied to the projecting tip of the lid bent part 24 so as to form a first gap S1 into which the foaming material flows to the flow passage lid 20.SELECTED DRAWING: Figure 12

There is described herein a computer-implemented method for determining operating parameters of a planar flow caster in a metal foil fabrication process. The planar flow caster has a melt distribution receptacle through which a molten metal is extruded, and a cooling surface for cooling and solidifying the molten metal as the molten metal flows onto the cooling surface. The method includes capturing visual data of the melt distribution receptacle, molten metal and cooling surface of the planar flow caster during operation, and applying at least one machine learning model to the visual data to determine one or more operating parameters of the metal foil fabrication process.

This application discloses a high-silicon steel strip and its preparation apparatus, method, and application, belonging to the field of non-oriented high-silicon steel technology. The preparation apparatus includes: a crucible for planar flow casting equipment, with a heater surrounding the crucible for heating and holding the master alloy to form high-silicon steel liquid; a nozzle gap at the bottom of the crucible; a cooling copper roller located below the crucible for cooling and rapidly solidifying the high-silicon steel liquid to form an initial high-silicon steel strip of a certain thickness; and a rolling protection device located near the cooling copper roller, which creates a locally sealed atmosphere by introducing inert gas and continuously acts on the area between the high-silicon steel liquid and the cooling copper roller during the casting process. The technical solution of this application sets a rolling protection device near the surface of the cooling copper roller during the solidification process of the high-silicon steel liquid. This rolling protection device combines forced rolling and local inert atmosphere protection functions to improve the wettability of the steel liquid to the cooling copper roller and the forming stability.

A planar flow casting melt-delivery arrangement (220, 220A) configured for the production of metallic foils from a metallic material, the melt-delivery arrangement (220, 220A) comprising a high temperature receptacle (124, 124A) that includes: at least one chamber (240, 240A, 242, 242A) configured to hold a metallic melt therein; a nozzle (222, 222A) having at least one nozzle aperture (227, 227A) configured for the egress of the metallic melt from the at least one chamber (240, 240A, 242, 242A) for foil formation; and at least one filter (246, 246A, 246B) located within the at least one chamber (240, 240A, 242, 242A), each filter (246, 246A, 246B) configured to remove impurities from the metallic melt flowing therethrough.

A heat exchanger comprises a plurality of cells formed by a stack of alternate planar flow-guide plates (1) and heat transfer plates (2), each heat transfer plate having at least three apertures (3, 4, 6) therethrough, each aperture defining a part of a respective one of at least three fluid flow paths in the heat exchanger. Each flow-guide plate has apertures therethrough corresponding to at least two of the flow paths and a larger aperture (5, 7, 8) therethrough configured to guide fluid in the remaining flow path across the face of the heat transfer plates between which the flow-guide plate is located, each successive flow-guide plate in the stack forming part of a different flow path from the preceding one in the stack.

A cooling roller for producing non-oriented silicon steel ultra-thin strip by plane flow casting, which is composed of a cooling copper roller, characterized in that a nickel plating layer is provided on the surface of the cooling copper roller, and the thickness of the nickel plating layer is controlled to be 30-60 microns; the preparation method comprises the following steps: oil removal; pickling; alkali washing; chemical nickel plating; rinsing; drying; standby. The application can ensure that the B 50 ≥1.63T, P 1T / 400Hz ≤10.21W / kg, thickness is 0.02-0.16 mm, the nickel plating layer is formed by chemical nickel plating on the surface of the cooling copper roller, the adhesion of the cooling copper roller can be increased by 10% compared with that of the cooling copper roller, the production cost is relatively reduced by 25% compared with the current one, the surface of the cooling copper roller is not easy to be oxidized, and the qualified rate of the prepared non-oriented silicon steel ultra-thin strip is increased from the current 76% to not less than 85%.

This utility model belongs to the field of drainage structure parts for hot chambers, and discloses a permeable screw with threaded grooves and holes. It includes a head, a screw body, a special metal washer, and a drainage channel. Using a screwdriver and the head, the screw is screwed into the threaded opening of the hot chamber body. The screw threads engage with the threaded grooves of the hole for fixation, and the rounded tip avoids damage to the internal threads. During liquid discharge, the drainage channel forms a three-dimensional flow guiding network consisting of a through channel and drainage holes. Under pressure, the liquid rises and overflows along the through channel. The special metal washer is fitted onto the smooth rod section, and its drainage annular groove and water inlet form a planar flow guiding system. Changing the number of washer grooves allows for flow rate adjustment. This utility model has a compact and reasonable structural design, strong pressure and temperature resistance, and a simple structure. It is suitable for draining liquids from some general-purpose chemical experimental reactors, eliminating the need for expensive temperature and pressure resistant regulating valves, making it easy to use and with low maintenance costs.

The present invention relates to a column 140 for a gas chromatograph. The column 140 of the present invention is a 3D column having a carrier part 142 with a plurality of channels 143, a plurality of first and second connecting passages 1461, 1462, each connecting two adjacent first openings 1431 or second openings 1432, and first and second covers 1441, 1442 coupled to the carrier part 142, thereby providing a three-dimensional continuous flow path. Alternatively, the column may have a carrier part with a continuous planar flow path defined by open channels formed in the carrier part, a cover part attached to the carrier part with a plurality of filling holes arranged along the open channels, and a sealing member for sealing the filling holes. The present invention also relates to a manufacturing method.

The invention relates to a filter cartridge having at least one filter medium body. On the outflow side, the filter cartridge is supported by a grid section of the support element. The grid sections have planar flow openings and are preferably formed by ribs which intersect one another. The support element has at least one locking mechanism which is integrally formed with the grid section and by means of which the filter cartridge can be locked on a housing cover of the filter device. A sealing element is held on the support element, which sealing element seals the filter cartridge relative to the housing cover in the locked state. When the filter housing is opened, the filter cartridge is retained at the housing cover due to the locking. Consequently, dirt accumulated on the unpurified side (between the filter cartridge and the housing cover) does not enter the housing lower part with the outlet on the purified side.

The invention provides a planar flow battery stack structure, and belongs to the technical field of flow batteries. The electric pile structure comprises a positive electrode array and a negative electrode array, the positive electrode array and the negative electrode array comprise positive electrode plates and negative electrode plates which are separated from each other, the number of the positive electrode plates is the same as that of the negative electrode plates, and the positive electrode plates and the negative electrode plates are in one-to-one correspondence; the positive plates in the battery units are connected with the negative plates of the adjacent battery units through external wires, so that the battery units are connected in series in sequence; the positive current collector is arranged on the positive plate of the first battery unit at the head end of the series path; the negative current collector is arranged on the negative plate of the last battery unit at the tail end of the series path; and the diaphragm is arranged between the positive electrode array and the negative electrode array. According to the invention, a plurality of battery units are connected in series in a manner of tiling the electrodes, so that the purposes of increasing current and voltage in the direction of one plane are achieved.

[Problem] A purpose of the invention is to improve dust collection efficiency while reducing pressure loss in a cyclone. [Solution] A cyclone 1, 11, 21 according to the invention includes: an outer cylinder 3 provided at an upper portion of a rotating cylinder 2; an inner cylinder 4 provided concentrically within the outer cylinder 3; a flow straightening member 5 in a space immediately below the inner cylinder 4, in which a plurality of planar flow straightening plates, each having a curved surface formed in at least a lower half thereof, are provided at equal angular intervals around an axis of the inner cylinder 4, and the curved surface of each planar flow straightening plate is provided in the same direction as a swirling flow flowing around an inner circumference of the inner cylinder 4; an inlet tube 6 provided tangentially to an outer circumference of the outer cylinder 3; a drop port 8 provided at a lower portion of the rotating cylinder 2; and a re-scattering prevention member 9, 19, 29 provided at a lower end portion of the flow straightening member 5. The re-scattering prevention member may have a cylindrical, inverted conical or inverted truncated conical shape.

The invention discloses a trace antimony-containing high-silicon steel thin strip and a preparation method thereof, and belongs to the field of high-performance soft magnetic materials and advanced manufacturing processes thereof. The high-silicon steel thin strip containing trace antimony comprises the following chemical components in percentage by mass: 4.5-7.0% of Si, 0.01-0.50% of Sb, less than or equal to 0.002% of C, less than or equal to 0.002% of N, less than or equal to 0.002% of O, less than or equal to 0.002% of S and the balance of Fe and inevitable impurities. The preparation method comprises the following steps: smelting according to design components; a thin strip with the thickness ranging from 0.03 mm to 0.15 mm is prepared through a plane flow casting technology; and carrying out low-strain leveling rolling with the total rolling reduction of less than or equal to 30%, and carrying out annealing treatment. The method has the advantages that the finally obtained high-silicon steel thin strip is uniform in thickness, excellent in surface quality and outstanding in magnetic performance.

Pellet interstice oxygen expulsion device, based on the principle of two-step expulsion of oxygen filled in pellets, includes an upper connecting pipe, a separation cylinder, a bottom quadrangular pyramid cylinder, an outer quadrangular pyramid cylinder, a gas collecting pipe, an inner quadrangular pyramid cylinder, a middle quadrangular pyramid cylinder, and a lower connecting pipe. The side length of the top plate of the separation cylinder is 1.5 to 2 times the inner diameter of the transport pipe, the height of the top cavity of the separation cylinder is 1 to 2 times the inner diameter of the transport pipe and the negative pressure is -20 Pa to -60 Pa, and the height of the top cavity of the inner quadrangular pyramid cylinder is 1 to 2 times the inner diameter of the transport pipe. After the balloons in the top cavity of the separation cylinder are separated, the induced draft fan sucks the main filled oxygen. 50% of the clean gas forms a planar flow through the side plate of the bottom quadrangular pyramid cylinder to drive the remaining filled oxygen near the wall of the separation cylinder, and the remaining 50% of the clean gas forms a parallel flow in the top cavity of the inner quadrangular pyramid cylinder to drive the remaining filled oxygen in the center. The pellet safe transport and smelting device for hydrogen reduction smelting in iron and steel enterprises can use the present invention. The invention has safe pellet transport, stable static pressure distribution, no deflagration, and does not carry filled oxygen into the smelting furnace.

The present invention provides a method and a system for preparing an extremely thin strip of high magnetic induction oriented silicon steel. The method includes: melting molten steel with required components to a certain temperature, stirring evenly, and then spraying it onto a rapidly rotating crystallization roll in a planar flow casting state successively through a tundish, a nozzle package, and a nozzle, so that the alloy steel liquid solidifies instantaneously to form a planar flow casting steel strip; then entering a nitrogen protection area for cooling, and automatically coiling it into a silicon steel thin strip coil by a coiler after cooling; finally, through non-uniform diameter rolling by a cold rolling mill, heating and crystallization treatment by a continuous annealing furnace, coating an Al2O3 isolation layer, and secondary crystallization in a high-temperature bell-type furnace, an extremely thin strip finished product of high magnetic induction oriented silicon steel is finally obtained. The present invention can achieve rapid solidification of molten steel, and has the advantages of simple equipment, convenient operation, large preparation quantity, dense material, and low cost.

Closure plate for preloading a plate reactor comprising a stack of plates for planar flow of fluid or fluids, said flow being bounded by said plates, wherein said plates have a given width and a given length, wherein the closure plate comprises a sheet with a face to face against a top of said stack, wherein the face has a convexity lengthwise said sheet, said convexity having a convex cross-section. Plate reactor comprising one said stack of plates and said one or two closure plates for preloading. Method of manufacturing a respective closure plate for preloading and a respective plate reactor.

The invention relates to a column (140) for a gas chromatograph. The invention suggests that the column (140) is a 3D-column comprising a carrier part (142) with a plurality of channels (143), a number of first and second connecting passages (1461, 1462) each coupling two adjacent first openings (1431) or second openings (1432) and a first and a second cover (1441, 1442) coupled to the carrier part (142), such that a 3-dimensional continuous flow path is provided. In the alternative, the column has a carrier part with a continuous planar flow path defined by an open channel formed into the carrier part, a cover part attached to the latter with a plurality of filling holes arranged along the open channel and a sealing member sealingly closing the filling holes. The invention also relates to a manufacturing method.

The application provides an inconel alloy foil and a preparation method thereof, and comprises the following steps: according to a preset alloy component ratio, feeding refined materials of each component of the alloy into a vacuum melting furnace to perform vacuum melting, and preparing a molten metal obtained by the vacuum melting into an inconel alloy cast strip with a target thickness through a plane flow casting process; cooling the plane flow cast inconel alloy extremely thin strip of the inconel alloy cast strip to room temperature under a protective atmosphere to obtain a room temperature cast strip; performing one rolling pass of cold finish rolling on the extremely thin strip of the room temperature cast strip through a rolling mill to obtain a semi-finished foil; and performing heat treatment on the semi-finished foil. The application can solve the problems in the prior art, such as a long and complicated process flow, a low yield, a waste of a large amount of resources and energy, poor uniformity of a prepared finished product, and poor mechanical properties.

The present invention relates to a method for annealing an ultra-thin strip of non-oriented silicon steel, belonging to the field of heat treatment of metal materials, and solves the problems that the existing annealing method for the ultra-thin strip of silicon steel by planar flow casting has a relatively complicated process, high cost, and at least one problem such as high iron loss, bending, oxidation, insufficient magnetic induction, etc. after annealing. A method for annealing an ultra-thin strip of non-oriented silicon steel: S1. Perform vacuum treatment on a vacuum tube furnace, introduce an inert gas, and raise the temperature; S2. When the annealing temperature is reached, place the sample in the cooling zone of the vacuum tube furnace, close the furnace door, and introduce a reducing gas; the sample is an ultra-thin strip of non-oriented silicon steel obtained by the planar flow casting method; S3. Push the sample to the heat preservation zone for annealing; S4. Push the sample to the cooling zone, stop introducing the reducing gas, and only introduce the inert gas. After the reducing gas is exhausted, take out the sample. The present invention provides an annealing method with a simple process and low cost, and improves the comprehensive performance of the ultra-thin strip of non-oriented silicon steel: P 1.0 / 1000Hz ≤40 W / kg, B 5000 ≥1.66 T, with good flatness and quality.

This invention discloses a method and system for selecting drag-reducing materials in water conveyance projects. The selection method includes: S1 applying the drag-reducing material to be tested onto a test sample and placing it in a water conveyance test section; S2 adjusting the average flow velocity of the cross-section of the water conveyance test section until the water flow enters the square resistance zone, and calculating the comprehensive roughness of the water conveyance test section while maintaining a constant flow state; S3 calculating the roughness of the test sample coated with drag-reducing material; S4 acquiring a two-dimensional planar flow field along the water flow direction in the water conveyance test section, and obtaining the near-wall average flow velocity and vertical velocity gradient of the test sample coated with drag-reducing material from the vertical velocity distribution; S5 obtaining the drag-reducing effect of the drag-reducing material based on the roughness, near-wall average flow velocity, and vertical velocity gradient of the test sample before and after applying the drag-reducing material; S6 repeating S1 to S5 until the drag-reducing effect of all the drag-reducing materials to be tested is obtained, and then selecting drag-reducing materials that meet the design requirements based on the design requirements of the water conveyance project.

A turbo compressor (10) comprises: an intermediate flow path (30) through which a refrigerant flows between a first impeller (11) and a second impeller (21); a diffuser flow path (40) through which the refrigerant that has flowed out from the second impeller (21) flows; and a volute flow path (50) through which the refrigerant that has passed through the diffuser flow path (40) flows. The diffuser flow path (40) includes a planar flow path (43) extending in a radial direction, and a curved flow path (44) bent to the opposite side to a refrigerant inflow side in an axial direction with respect to the planar flow path (43). The volute flow path (50) extends in a circumferential direction and is connected to the curved flow path (44). A maximum value (Rv) of the outer diameter of the volute flow path (50) is equal to or less than a maximum value (Rr) of the outer diameter of the intermediate flow path (30).

The present invention relates to a planar graphite runner plate for a slurry flow battery and a flow battery, the planar graphite runner plate comprises a conductive plate body having at least one slurry inlet, at least one slurry outlet and a main functional surface for directly facing an ion exchange membrane, the main functional surface is provided with a plurality of convex flow channels which are parallel to one another, and a shallow channel is formed between every two adjacent convex flow channels, so that a shallow plane flow cavity is formed. Compared with the prior art, blockage is fundamentally avoided, pumping energy consumption and shearing damage to slurry particles are greatly reduced, the battery structure is simplified, and the energy efficiency and long-term operation stability of the slurry flow battery are remarkably improved.

[Problem] To improve dust collecting efficiency while reducing the pressure loss of a cyclone. [Solution] This cyclone 1 comprises: an outer cylinder 3 provided at the upper part of a revolving cylinder 2 and expanded in diameter downward; an inner cylinder 4 concentrically provided in the outer cylinder 3; a conical part 9 provided at the lower end of the outer cylinder 3 and contracted in diameter downward; a flow straightening member 5 which is provided in the space directly below the inner cylinder 4 and in which a plurality of planar flow straightening plates, each having a curved surface formed in at least the lower half thereof, is provided at equal angular intervals around the axis of the inner cylinder 4, the curved surface of each planar flow straightening plate being oriented in a direction opposite to the swirling flow flowing around the inner periphery of the inner cylinder 4; an inflow cylinder 6 provided in the tangential direction to the outer periphery of the outer cylinder 3; and a drop port 8 provided at the lower part of the revolving cylinder 2. An inner diameter D2 of the lower end of the outer cylinder 3 can be 1.1-2.2 times an inner diameter D1 of the upper end of the outer cylinder 3. The height of the outer cylinder 3 can be 0.8-1.6 times the inner diameter D1 of the upper end of the outer cylinder 3.

The invention relates to a column (140) for a gas chromatograph. The invention suggests that the column (140) is a 3D column comprising a carrier portion (142) having a plurality of channels (143), a plurality of first connecting passages (1461) and a plurality of second connecting passages (1462) each coupling two adjacent first openings (1431) or second openings (1432), and a first cover (1441) and a second cover (1442) coupled to the carrier portion (142) such that a three-dimensional continuous flow path is provided. In an alternative, the column has a carrier portion having a continuous planar flow path defined by an open channel formed into the carrier portion, a cover portion attached to the carrier portion, the cover portion having a plurality of filling holes arranged along the open channel, and a sealing member attached to the cover portion, the sealing member sealingly closes the filling hole. The invention also relates to a manufacturing method.

The application relates to a high-vacuum pumping speed test air inlet flow distribution mechanism, which comprises a connecting flange, an air inlet pipe connected to one side of the connecting flange, and a planar flow distribution plate, a first connecting rod, a first conical flow distribution plate, a second connecting rod and a second conical flow distribution plate connected to the other side of the connecting flange in sequence. The flow distribution plate based on the double-stage conical flow distribution structure can ensure that the gas molecules collide at least twice when entering the back, realizes a good equilibrium state, has the advantage of small air release amount, avoids the beam effect caused by the traditional elbow air inlet, reduces the measurement uncertainty of the background vacuum, and can improve the test efficiency and the reliability of the test results.

The application discloses a method for simulating the planar flow field of a braided river channel, comprising the following steps: preparing a two-dimensional calculation grid of the river channel; interpolating the terrain of the grid points to complete fine modeling of the planar area riverbed topography of the braided river channel; numerically discretizing two-dimensional hydrodynamic control equations on the two-dimensional calculation grid to construct a basic two-dimensional hydrodynamic solver; establishing a dry-wet dynamic boundary processing module in a memory and compensation mode, making it work in coordination with the hydrodynamic solver, and jointly forming a complete two-dimensional hydrodynamic model; setting the import and export flow, water level open boundary conditions for the target river section of the braided river channel, simulating the planar flow field of the braided river channel, saving the water level distribution and flow field results calculated by the model on a hard disk, and displaying on a computer screen to feedback to the user. The application solves the problems of too large error, poor effect or weak method universality of the braided river channel planar flow field simulation method in the river simulation technical field.

To reduce the size of a turbo compressor while maintaining fluid efficiency. A turbo compressor (10) includes an intermediate flow path (30) through which a refrigerant flows between a first impeller (11) and a second impeller (21), a diffuser flow path (40) through which the refrigerant flowing out of the second impeller (21) flows, and a volute flow path (50) through which the refrigerant that has passed through the diffuser flow path (40) flows. The diffuser flow path (40) includes a planar flow path (43) extending in the radial direction and a curved flow path (44) bent in the axial direction opposite to the refrigerant inlet side with respect to the planar flow path (43), and the volute flow path (50) extends in the circumferential direction and is connected to the curved flow path (44), and a maximum outer diameter (Rv) of the volute flow path (50) is equal to or smaller than a maximum outer diameter (Rr) of the intermediate flow path (30).

Flow guide plate (1) for an electrochemical cell (3), comprising at least one planar flow guide area (5) having a center (7) and a periphery (9), wherein at least one flow guide (11) is arranged in the flow guide area (5), which fluidically connects a media inlet (13) with a media outlet (15), wherein a) a first flow guide section (17) of the flow guide (11) leads from the media inlet (13) arranged in the periphery (9) to the center (7) and transitions in the center (7) into a second flow guide section (19) of the flow guide (11), which leads from the center (7) back to the media outlet (15) also arranged in the periphery (9), or b) the first flow guide section (17) leads from the media inlet (13) arranged in the center (7) to the periphery (9) and in the periphery (9) transitions into the second flow guidance section (19),which leads from the periphery (9) back to the media outlet (15) also arranged in the center (7), wherein the first flow guidance section (17) and the second flow guidance section (19) run parallel to each other, characterized in that the flow guidance plate (1) has, in addition to the at least one media inlet (13) and the at least one media outlet (15) for a medium, at least one passage opening (23) for the same medium, wherein the passage opening (23) for the same medium is not fluidically connected to the flow guidance area (5), wherein the at least one passage opening (23) and the at least one media inlet (13) and / or the at least one media outlet (15) have the same cross-sectional size and shape, wherein the flow guidance plate (1) is designed in such a way thatthat, starting from a first position of the flow guide plate (1) in space, after a rotation of the flow guide plate (1) by a certain angle, the passage opening (23) in a second position of the flow guide plate (1) in space comes to be located at a first location where a functional opening, selected from the media inlet (13) and the media outlet (15), is arranged in the first position, and the functional opening in the second position comes to be located at a second location where the passage opening (23) is arranged in the first position.

This invention provides a method, a motion trajectory tracking method, and a system for calibrating the center of a vortex in a planar flow field. It determines the sizes of a maximum and minimum value filter, as well as the DBSCAN clustering algorithm parameters, based on the characteristics of the planar vortex flow field. Local maxima are calculated using the maximum value filter, and local minima are calculated using the minimum value filter. The local maxima and minima are sorted to calculate preliminary marker points for the vortex center. These preliminary marker points are then clustered and merged according to the DBSCAN clustering algorithm parameters. The preliminary marker point with the highest intensity value in each cluster is designated as the vortex center location. This invention fully considers the complexity of the planar vortex flow field itself, as vortex sizes can vary significantly in different scenarios. By adaptively adjusting and setting the filter sizes and DBSCAN clustering algorithm parameters, and combining the preliminary marker points calculated by the filters with the clustering algorithm, accurate calibration of the vortex center location is achieved in different scenarios.

The present invention relates to a manufacturing apparatus comprising: a main housing providing a working surface in a manufacturing space; an optical system for providing a beam to irradiate the powder in the build platform region of the working surface to produce the component layer by layer; and a shielding gas system for providing a planar flow of shielding gas in the manufacturing space. The protective gas system has a discharge opening structure and a suction opening structure for flowing gas into the manufacturing space and extracting gas therefrom. The discharge opening structure and the suction opening structure are arranged on opposite sides of the main housing such that a flat flow of shielding gas flows through a working surface between the opposite sides of the main housing. The shielding gas system has a secondary outlet opening for flowing the gas into the manufacturing space in the direction of the shielding gas planar flow, the secondary outlet opening being designed to form a secondary shielding gas flow which defines a flow profile of the shielding gas planar flow.

This invention provides an external drive feedback control method for a flow control valve, comprising the following steps: S1, a servo motor outputs rotational power to a planetary gear reducer, which then transmits the driving force to a three-stage rotary valve; S2, by controlling the rotational angle, the oil flow capacity and direction of the three-stage rotary valve are controlled, thereby achieving different valve body functions; S3, the sealed chamber of the flow counting component achieves relative rotation of the metering rotor under the action of the first pressure oil, and then the power is transmitted to the encoder through the first transmission shaft connected by a spline. The encoder's precise rotational angle measurement then achieves a high-precision feedback electrical signal output to the control system; S4, closed-loop control of the valve orifice flow. This invention targets a planar flow distribution valve core structure, employing an ultra-low pulsation volumetric flow counting component. By counting the valve orifice flow, high-precision measurement of the valve orifice flow is achieved. The feedback method is simple, the feedback structure is simple, the feedback links are few, and the control is precise.