16 results about "Volume rate" patented technology

A method of forming an extrusion, the method including steps of: receiving a flow of extrudable material; extruding a plurality of flow streams from the flow of extrudable material; inducing a change in volumetric flow rate of at least one of the flow streams relative to another one of the flow streams; and combining each of the flow streams to form an extrudate having a velocity gradient.

A system (400), method, and computer program product are disclosed for indirectly measuring a volumetric flow rate (453) generated by a compressor (110) in an environment with known intake pressure. The compressor is connected with a measurement volume which extends to a closing check valve in the downstream of the compressor. The check valve is adapted to separate the compressor from the piping system supplying the consumer. The pressure sensor is located between the compressor and the check valve. An activation module (410) sends an activation instruction (I1) to the pressure sensor for capturing a time series of pressure values (p) and corresponding timestamps (t) at a sampling rate set to capture three to one hundred pressure values during the time required for the compressor to pump the measurement volume to the operating working pressure at which the check valve is open. Once the compressor is activated, the system stores the captured pressure value and its timestamp in memory (420). A regression module (430) calculates a slope (433) of a linear regression line of pressure values captured during a regression time window between a point in time of activation of the compressor and a point in time at which the compressor reaches the operating working pressure. A volume flow (453) generated by the compressor is calculated by multiplying the slope (433) by a scaling factor defined as a ratio of the measured volume to the intake pressure.

A flow measurement apparatus can include a main flow passage having a flowmeter, a bypass flow passage connected in parallel with the main flow passage, the bypass flow passage having a flow restrictor, a mass flowmeter, and at least one sensor configured to measure a pressure differential across the mass flowmeter, and a control system configured to determine at least one rheological parameter of a non-Newtonian fluid based on outputs of the sensor and the mass flowmeter. A method for measuring a rheological fluid property of a non-Newtonian fluid can include measuring a volumetric flow rate through a flowmeter connected in a main flow passage, measuring a differential pressure across a mass flowmeter in a bypass flow passage, measuring a mass flow rate through the bypass flow passage, and determining the rheological fluid property from the differential pressure and the mass flow rate through the bypass flow passage.

1. Name of the product in this design: Electromagnetic Flu Flow Meter. 2. Purpose of this design: A high-precision flow meter for measuring the volumetric flow rate of conductive liquids based on the law of electromagnetic induction. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

This invention relates to the field of geological engineering, specifically to a method and system for quantitatively analyzing the diffusion effect of synergistic grouting in water-rich soft rock fracturing and seepage. The method includes: conducting parameter tests and obtaining time-varying characteristic parameters through orthogonal experiments; establishing a coupled dynamic model including the grout volumetric flow rate equation, seepage motion equation, and flow continuity equation to obtain the spatiotemporal distribution of the grout field, the flow distribution coefficient of the dual-domain coupling, and the grouting parameters at different grouting times; constructing an index system with synergistic effects and obtaining quantitative values ​​of the diffusion effect. This invention constructs a dual-domain coupled dynamic model that couples the grout volumetric flow rate equation, seepage motion equation, flow continuity equation, and stress continuity equation, modifies the classical flow law to adapt to the grout yield stress characteristics, and achieves transient analysis through finite element numerical solution. It can output the spatiotemporal distribution of the grout field, the flow distribution coefficient, and the grouting parameters, and determine the micro-zone division boundary threshold based on experimental data.

Exemplary embodiments can determine the temperature setpoint of the outlet heater or cooler (114) based on available information without requiring user input or with only minimal user input. Exemplary embodiments can estimate the temperature setpoint of the outlet heater (114) based on available information such as the pressure increase along the column (110), the temperature at the inlet (6) of the column (110), and the volumetric flow rate. In some cases, the estimate can be normalized for column dimensions such as length and diameter. A tailing factor can also be used to determine the estimate. The estimate is computationally not burdensome and can be recalculated while the column is in use.

The invention relates to a method for determining a volume flow rate (ΔV / Δt) of a fill material (2) in a container (3) using a level measuring device (1), comprising the following method steps: Emitting high-frequency signals (S HF ) surface of the filling material and reception of corresponding reception signals (R HF ); Determination of fill level values ​​(L i-n , L i ) and / or a change in fill level over time (ΔL / Δt) based on the received signals (R HF ); Determination of the volume flow rate (ΔV / Δt) using a known linearization model, and the change in fill level over time (ΔL / Δt), or using a volume difference (ΔV) resulting from the linearization model and the fill level values ​​(L i-n , L i) and a corresponding time difference (Δt). The invention is therefore based on the finding that a volumetric flow rate (ΔV / Δt) or flow rate can also be determined based on level measurement, provided that the linearization model is available for the corresponding container. An advantage of the method according to the invention is that, in processes that inherently require level measurement, separate flow meters at the inlet (31) or outlet (32) of the container (2) can be dispensed with.

This invention discloses a supercritical medium metering method and regulating device. The metering method includes: S1, acquiring real-time state information of the metering medium and determining its real-time state; S2, metering the volumetric flow rate of the metering medium according to its different real-time states; and S3, calculating the mass flow rate using the medium density ρ, medium temperature, and the measured volumetric flow rate. This invention solves the problem of the narrow applicability of existing supercritical medium regulating methods.

An extrusion system comprising an extruder and a valve (100), configured to extrude a viscoelastic extruded material from the extruder, with the extruded material flowing through the valve at a volumetric flow rate V, said valve having ac onstriction portion (101) comprising at least a first movable portion (102), with across-sectional area C (103) orthogonal to the extruded material flow direction x and a length L along the extruded material flow direction x, moving towards and away from a center axis of the flow channel to vary the opening width, in which the cross-sectional area C varies along the direction x such that |dC / dx| is inferior to 0.03 m and preferably below 0.01 m throughout the entire length of the valve; and the elongation rate to length ratio ε / L is inferior to 100 m-1.s-1, preferably inferior to 50 m-1.s-1 and preferably inferior to 15 m-1.s-1 throughout the entire length of the valve.

A volumetric flow rate measuring and metering device for fluid solids has an upright channel through which a flow of bulk material can pass. A velocity sensor measures the velocity of the flow. An actuator controls an operable occlusion device relative to the lower end of the channel. A controller, receiving velocity data from the velocity sensor, operates the actuator at least partially based on the information contained in the velocity data to cause the bulk material to flow through the channel in a consolidated cylindrical flow at the location of the velocity sensor.

The invention relates to a branch switch state determination method, system and device of a multi-branch pipeline and a medium, and the determination method comprises the steps: obtaining the fluid flow speed of each branch of the pipeline in different switch states, and calculating the initial volume flow of each branch; the initial volume flow is corrected through the pipeline parameters and the fluid parameters of the branches in the theoretical working state and the actual working state so as to obtain the standard condition volume flow of the branches, and finally the total standard condition volume flow under different branch switching schemes is generated according to the standard condition volume flow of the branches in different switching states. The optimal branch switching scheme is determined according to the total standard condition volume flow and the preset target, on one hand, it is ensured that the standard condition volume flow of the pipeline can reach the preset target, and on the other hand, by correcting the volume flow of each branch, the metering precision is improved, the accuracy of metering data is ensured, and the pipeline transmission difference of the pipeline meets the requirement.

1. Name of the product in this design: Vortex Flow Meter. 2. Application of this design: This product is used for the accurate measurement of the volumetric flow rate of liquids and the temperature of the medium in pipelines. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to the technical field of profound hypothermia measurement, and provides a low-temperature fluid flow reference device and method based on mass method and volume method mixed measurement, and the device comprises a fluid supply module which is used for providing low-temperature fluid; an inlet of the testing pipeline is connected with the fluid supply module, and a detected flowmeter is arranged on the testing pipeline; the low-temperature and constant-temperature module is used for providing a low-temperature and constant-temperature testing environment for the detected flowmeter; the standard receiving tank is communicated with the outlet of the test pipeline; the liquid level meter is arranged in the standard receiving tank, and the liquid level meter is used for measuring the liquid level height change delta h in the test time period delta t; and the weighing unit is arranged at the bottom of the standard receiving tank, and the weighing unit is used for measuring the fluid mass increment delta m of the standard receiving tank in the test time period delta t. According to the invention, synchronous and independent measurement of mass flow and volume flow is realized in a single standard container, real-time cross validation of data is realized, each fault of the device is found in time, and the reliability and confidence of a measurement result are improved.

This invention relates to a fluid velocity and flow rate detection method based on attitude recognition, belonging to the field of fluid detection technology. The method includes: installing an elastic steel sheet with a first sensor mounted at its free end inside a fluid pipe; acquiring an initial position reference value in an empty pipe state and calibrating it to obtain a full-pipe static position calibration value; when fluid is present in the pipe, the first sensor acquires acceleration detection data and three-dimensional motion trajectory data in real time, and obtains attitude change data by calculating the difference between the three-dimensional motion trajectory data and the position calibration value; integrating the acceleration detection data to obtain a basic fluid velocity value, and correcting it with the attitude change data to obtain the actual flow velocity; acquiring pipe inlet and outlet pressure and fluid temperature data to fit a calibration coefficient for the operating conditions, and calculating and outputting the real-time volumetric flow rate by combining the actual flow velocity and the pipe cross-sectional area. This invention improves the accuracy of the detection reference through dual-reference calibration and multi-dimensional data acquisition, adapts to various operating conditions, and enhances detection robustness and accuracy.

This invention provides a method for early warning of material blockage at a transfer station, comprising: obtaining the volumetric flow rate P of the material at the entrance of the transfer station within a statistical time period T. in and the volumetric flow rate P of the material at the transfer station outlet out The difference in material volumetric flow rate dP between the inlet and outlet is obtained; based on the difference in material volumetric flow rate dP, the allowable cross-sectional area S of material to pass through when a blockage occurs in the transfer station is estimated. k Based on the material volumetric flow rate P measured m times in The average value and the cross-sectional area S predicted m times k Permissible material volumetric flow rate P 估 The average value is used to determine whether the transfer station needs to perform a blockage clearing warning. This invention also provides an early warning system using the aforementioned warning method. This invention can dynamically estimate the cross-sectional area S. k The changes in these parameters allow for accurate prediction of the degree of material blockage at transfer stations.