11results about "Volume flow measuring devices" patented technology

The application discloses a kind of hydropower station multi-point water taking measurement systems, it is related to hydropower station water taking measurement and hydraulic transient signal processing technical field, to each water taking branch according to round to exert codebook micro water hammer excitation carrying water taking branch identification and round identification and output reference template, obtains transient observation signal in pre-set observation position and obtains candidate event based on reference template and outputs verification pass event and verification fail event;Impulse response is updated in calibration window and generates water taking branch uncertainty index;Verification pass event generates physical consistency token quantity and generates write budget;Calculate congestion risk index and generate event priority and only allow to write minimum event frame in conservative mode;Virtual continuous page type real extraction buffer pool unit executes page type real extraction mapping to form writable window;Event frame settlement unit generates event frame;Measurement calculation and output unit outputs water taking branch instantaneous flow, water taking branch water taking and measurement confidence index.

The present invention provides a machine tool 1000 for machining a workpiece using a machining fluid. The machine tool 1000 comprises a workspace 1 for machining a workpiece, at least one fluid consumption unit 2 capable of supplying a machining fluid for workpiece machining to the workspace 1, a hydraulic system 3 that supplies the machining fluid to at least one fluid consumption unit 2, and a control device 4 for controlling the machine tool. The hydraulic system 3 comprises a pump 32 for transporting the machining fluid, an inlet 35 through which the machining fluid transported by the pump 32 is guided to at least one fluid consumption unit 2, a first measuring unit 351a and a second measuring unit 351b assigned to the inlet, and a flow rate measuring device 351. These are each configured to detect the flow rate of the machining fluid in the inlet 35. In this example, the control device 4 is configured to control the machine tool 1000 based on a first measured value detected by the first measuring unit 351a and / or a second measured value of the flow rate of the machining fluid passing through the inlet 35 detected by the second measuring unit 351b.

The subject matter of this specification can be embodied in, among other things, a fluid flow measurement apparatus includes an inlet configured to flow a dynamic fluid flow, an outlet configured to flow the dynamic fluid flow, a first fluid conduit fluidically connected between the inlet and the outlet, configured with a first predetermined geometry, and configured to flow a first portion of the dynamic fluid flow, a second fluid conduit fluidically connected between the inlet and the outlet, configured with a second predetermined geometry, and configured to flow a second portion of the dynamic fluid flow, and a first flow meter configured to measure the second portion of the dynamic fluid flow.

The invention relates to a flow meter (100) for determining a flow rate of a fluid in a medium conduit (200), comprising: - a sensor base (101) comprising an obstruction body (102) and a sensor main body (103), - an electronics unit (300) and - a signal interface (400), wherein - the obstruction body (102) is arranged essentially upstream of the sensor main body (103) in a flow direction, - the sensor main body (103) comprises a support body piece (110) and a substrate assembly (111) having at least one ceramic substrate (108, 109), and - a gas flow meter - sensor unit (104) and a vortex counter - sensor unit (105) are arranged on the substrate assembly (111).

The present specification relates to the technical field of two-phase flow measurement, and particularly relates to a gas-liquid two-phase flow measurement method and device, computer equipment and a storage medium. The method comprises obtaining a measured volume flow, a measured mass flow and a measured density corresponding to a gas-liquid two-phase flow to be measured by a measurement device; collecting and calculating a first accurate density corresponding to a target liquid, and calculating a second accurate density corresponding to a target gas based on a gas pressure, a gas temperature and the target gas; substituting the measured volume flow, the measured mass flow, the measured density, the first accurate density and the second accurate density into a fitting formula to obtain fitting data; and processing the first accurate density, the second accurate density, the measured volume flow, the fitting data and the measured mass flow by using a mass separation formula to obtain a target gas mass flow and a target liquid mass flow corresponding to the target gas and the target liquid respectively, so that the mass flow of each phase can be determined conveniently and accurately.

This application discloses a hydrogen flow measurement device and apparatus. The hydrogen flow measurement device includes a first Coriolis flow meter, a second Coriolis flow meter, a third Coriolis flow meter, a first proportional solenoid valve, a second proportional solenoid valve, and a control unit. The full-scale values ​​of the first, second, and third Coriolis flow meters decrease sequentially. The first end of the first Coriolis flow meter is the flow inlet, and the second end is connected to both the first end of the second Coriolis flow meter and the first end of the first proportional solenoid valve. The second end of the second Coriolis flow meter is connected to both the first end of the third Coriolis flow meter and the first end of the second proportional solenoid valve. The second ends of the first and second proportional solenoid valves, together with the second end of the third Coriolis flow meter, serve as the flow outlet. The signal output terminal of the control unit is connected to the control terminals of each device.

Fuel cell system (2) comprising at least one fuel cell (4) having an anode and a cathode (8), and an air supply system (10) configured and designed to supply air from the environment (12) to the at least one fuel cell (4). The air supply system (10) comprises a hot-film HFM sensor (16) and a PFM sensor (20) configured and designed to measure the air mass flow rate (q). Kath ) from a pressure, a pressure difference and a temperature of the airflow. The air supply system (10) is designed and configured to determine the air mass flow rate (q). Kath ) at low air mass flows using the HFM sensor (16) and to determine the air mass flow (q Kath ) to determine at medium to high air mass flows using the PFM sensor (20).

A system includes a pipe, a multiphase fluid, and a measurement unit. The multiphase fluid is disposed within the pipe. The measurement unit is connected to the pipe and includes a cylindrical structure, a first magnet, a second magnet, a first coil, and a second coil. The cylindrical structure is submersed in the multiphase fluid and has a first end and a second end. The first magnet is connected to the first end of the cylindrical structure, and the second magnet is connected to the second end of the cylindrical structure. The first coil is wound around the outer circumferential surface of the pipe in a location corresponding to a location of the first magnet disposed within the orifice. The second coil is wound around the outer circumferential surface of the pipe in a location corresponding to a location of the second magnet disposed within the orifice.

A flow measurement apparatus can include a main flow passage, a variable flow restrictor, a bypass flow passage having an inlet connected with the main flow passage upstream of the variable flow restrictor and an outlet connected with the main flow passage downstream of the variable flow restrictor, and a mass flowmeter connected in the bypass flow passage between the inlet and the outlet. A method can include connecting a flow measurement apparatus, so that a fluid flow in a well also flows through the flow measurement apparatus, and varying a restriction to the fluid flow through the variable flow restrictor in response to a change in a flow rate of the fluid flow.

This utility model discloses a combined multiphase flow metering device, belonging to the field of multiphase flow meter technology. It includes a connecting pipe, with several inlet pipes uniformly and equidistantly fixedly connected to one side of the connecting pipe. A first valve is fixedly installed in the middle of each inlet pipe, and an inlet port is provided at the end of each inlet pipe. This combined multiphase flow metering device, by setting up inlet pipes, a first connecting piece, fixing bolts, and a delivery pipe, and by using the first and second connecting pieces in conjunction with the fixing bolts, achieves a quick, convenient, and stable connection between the delivery pipe and the inlet pipe. This modular connection method greatly simplifies the on-site installation process, reduces operational difficulty, and makes maintenance and replacement of the delivery pipe more convenient and faster. Furthermore, it allows for flexible adjustment of the number and position of the delivery pipes according to actual needs to adapt to different production requirements and fluid characteristics, thereby enhancing the versatility and flexibility of the device.