6 results about "Volume rate" patented technology

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.

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.

The present invention particularly relates to a control device (8) for a peristaltic pump (5) delivering a medium in a pulsating pressure cycle, the control device (8) controlling the speed of the peristaltic pump (5) in such a way as to not exceed the pressure limit (p) in the delivery line (9). Grenz Achieving maximum volumetric flow rate (Q) under these conditions max One task is to guide the actual pressure in the output line (9) as close as possible to the pressure limit (p). Grenz Or minimize the distance to it. To solve this problem, a method based at least on the pressure (p) in the output line (9) is proposed. ist To calculate the predicted pressure (p) for each pressure cycle (P) within the expected maximum pressure of the pressure cycle (P). futur And by using this predicted pressure, the maximum volumetric flow rate (Q) is limited. max This causes the pressure (p) in the output pipeline (9) to increase. ist ) does not exceed the pressure limit (p) in the pressure cycle (P) Grenz This invention also relates to related aspects.

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.