8results about "Volume/mass flow by mechanical effects" patented technology

The present invention discloses a minute flow rate measuring device and measuring method based on the mass method, the measuring device comprising: an internal evaporation prevention cover; an external evaporation prevention assembly; a weighing balance; a liquid collection container; a packing assembly provided inside the liquid collection container, made of a low water absorption material, breathable, and having a containment cavity for containing the liquid to be measured between its lower end and the bottom of the liquid collection container; a capillary receiving tube having a liquid receiving port and a liquid discharge port at its upper and lower ends, respectively, with its lower end extending vertically through the packing assembly into the containment cavity and its upper end curving horizontally through the internal evaporation prevention cover; and a discharge tube installed horizontally, with its outlet passing through the external evaporation prevention assembly and aligned horizontally with the liquid receiving port, and maintaining a first interval, thereby drawing the liquid discharged from the outlet into the liquid receiving port at intervals.

This invention discloses a device for measuring the transverse distribution of unit width flow rate in a vegetated water flow system. The device is longitudinally arranged with a uniform flow control zone, a vegetated water flow simulation zone, and a thin-walled weir zone. Multiple thin-walled weirs are evenly distributed at the tail end of the thin-walled weir zone, and weir plates extend forward from the thin-walled weirs into the vegetated water flow simulation zone. A water level regulating device is installed at the connection point between adjacent weir plates and the vegetated water flow simulation zone. A first water level gauge group is located in the first 1 / 3 of the vegetated water flow simulation zone, a second water level gauge group is located in the second 2 / 3, a third water level gauge group is located in the inlet area at the front of the thin-walled weir zone, and a movable fourth water level gauge group is located in the thin-walled weir zone. The device is simple and easy to implement, and the water level regulating device has a simple structure, making it suitable for reducing the influence and errors of experimental devices in various complex water flow structures. The device offers rigorous scientific technology, simple operation, wide applicability, and strong applicability, facilitating physical model experiments.

The present disclosure is directed to a method for determining a fluid pressure (p) at a fluid flow meter (5) being installed in a pipe network (1) that is supplied with fluid at a varying and / or variable input pressure (pin), wherein the method comprises the following steps: - recording input pressure information, wherein the input pressure information allows to determine a difference (Δp) between the input pressure (pin) in at least one first considered time-window and the input pressure (pin) in at least one second considered time-window; - aggregating, in the fluid flow meter (5), at least during the at least one first considered time-window and during the at least one second considered time-window, statistical data of a plurality of fluid flow events and / or fluid volume consumption events; - providing the aggregated statistical data in regular intervals and / or on demand to a head-end system (HES) that has access to the input pressure information; and - determining, by the head-end system (HES), a fluid pressure (p) at the fluid flow meter (5) based on - a change in the aggregated statistical data between the at least one first considered time-window and the at least one second considered time-window, and - the difference (Δp) between the input pressure (pin) in the at least one first considered time-window and the input pressure (pin) in the at least one second considered time-window.

A flow measurement device for assessing free surface fluid flow that includes a void container defining a void chamber and including an upper opening configured to receive the free surface fluid flow, a measurement container defining a measurement chamber in fluid communication with the void chamber via at least one through opening, an exit orifice defined in the measurement container and configured to allow fluid to drain from the measurement chamber at a known outflow rate based on fluid level, and at least one capacitive sensor configured to measure a level of fluid in the measurement chamber. A fluid path is defined through the upper opening, into the void chamber, through the at least one through opening, into the measurement chamber, and through the exit orifice.

This utility model discloses a real-time steam flow monitoring device, including a steam chamber and a steam transmission pipeline connected to the steam chamber; a monitoring unit disposed at the connection between the steam transmission pipeline and the steam chamber; wherein, the monitoring unit includes: a rotating shaft rotatably disposed within the steam transmission pipeline, one end of the rotating shaft extending into the steam chamber and having a fan blade disposed thereon; a rotating component disposed on the inner wall of the steam transmission pipeline; and a speed measuring component disposed on the wall of the steam chamber. The device can be installed on the steam transmission pipeline and the inner wall of the steam chamber by disassembling the connection between the steam transmission pipeline and the steam chamber by loosening bolts, thus avoiding the inconvenience of cutting as in existing methods. Furthermore, the fan blade on the rotating shaft, in conjunction with the speed measuring component, allows for real-time monitoring of the steam flow rate by adjusting the fan blade speed, making the process simpler and faster.

We provide a system for measuring the flow rate of fluids, including liquids. [Solution] The present invention relates to a system (11) for measuring the flow rate of a liquid-containing fluid, comprising a body (1100) through which a fluid flows, at least one rotor (1101) configured to be rotated by the fluid, and a device (111) for measuring the rotational speed of the rotor (1101). The measuring device (111) comprises an optical module (1111) configured to transmit incident light to the vanes (1101b) of the rotor (1101) in a direction substantially perpendicular to the rotation axis (A) of the rotor (1101), and to receive reflected light from the vanes (1101b). The measuring device (111) further comprises a conversion module (1113) configured to determine the rotational speed of the rotor (1101) and the flow rate of the fluid in accordance with the reflected light emission.

A cartridge-style flow sensor for sensing fluid flow within a manifold. The sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A encoder / sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller automatically issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit. The cartridge hydraulic flow sensor is easily and releasably engaged to a cavity of a hydraulic circuit manifold.