116results about "Volume flow measuring devices" patented technology

The compressor air inlet pressure stabilizing device comprises a compressor, and the compressor is provided with an air inlet; the compressor air inlet pressure stabilizing device is characterized by further comprising an air inlet pipeline, a regulation and control assembly, a Venturi tube, a first flow monitor, a second flow monitor and a central control module; the air outlet end of the air inlet pipeline is communicated with the air inlet; the regulation and control assembly is arranged on the air inlet pipeline and located at the air inlet. The regulation and control assembly has a degree of freedom of moving in the radial direction of the air inlet pipeline and is used for opening and closing the air inlet; the venturi tube is coaxially arranged in the gas inlet pipeline; the first flow monitor is arranged at the air inlet end of the air inlet pipeline; the second flow monitor is arranged between the regulation and control assembly and the air inlet; the central control module is electrically connected with the first flow monitor, the second flow monitor and a power source of the regulation and control assembly. The method has the technical effects of automatically adjusting the air pressure before entering the compressor and prolonging the service life of the compressor.

The embodiment of the invention provides a substance measuring device and a substance measuring method, the substance measuring device comprises a pressure difference forming pipe, and the apertures of at least two positions in the pressure difference forming pipe are different; the pressure sensor is arranged at the upstream of the pressure difference forming pipe and is used for detecting pressure data in the pressure difference forming pipe; the temperature sensor is arranged on the pressure difference forming pipe and is used for detecting temperature data of a multiphase object to be detected; the microwave resonance sensor is connected with the pressure difference forming pipe, the microwave resonance sensor comprises a channel, and the channel is communicated with the pressure difference forming pipe and used for collecting resonance data caused by the multiphase matter to be measured; and the pressure difference sensor is arranged on the pressure difference forming pipe and is used for detecting the pressure difference of at least two positions of the pressure difference forming pipe.

The application discloses a vortex frequency extraction and moisture phase separation flow measurement method combined with disturbance wave frequency characteristics, including a conductance ring sensor and a vortex flowmeter, comprising: a pressure sensor, a conductance ring sensor, a vortex flowmeter, a temperature sensor, an excitation electrode, a measurement electrode, a vortex generator, a piezoelectric probe, temperature, pressure and vortex signals s(t) are collected by a collection card, liquid film fluctuation signals δ(t) are collected by a high-speed AD-DA module and an FPGA, the conductance ring sensor 2 is used for dynamically monitoring the change of the liquid film thickness of the pipe wall, and then the fluctuation frequency, i.e., the disturbance wave frequency, is extracted, the vortex flowmeter is used for dynamically monitoring the vortex frequency, the relationship between the disturbance wave frequency characteristics and the vortex stability is utilized, and the extraction precision of the moisture two-phase vortex characteristic frequency is improved. The application utilizes liquid film fluctuation frequency information to extract the vortex frequency and correct over-reading, does not need to calibrate the liquid film thickness, has low requirements on the medium conductivity, and has a wide range of measurement medium.

The invention discloses an oil and gas well multiphase flow metering system based on edge calculation. Comprising a multi-parameter collaborative acquisition and dynamic adaptation module, an improved electrical tomography data reconstruction and feature extraction module, a slug flow form identification and dynamic parameter analysis module, a multi-phase flow mass flow dynamic modeling and parameter coupling module, an edge end real-time calculation and data compression encoding module and a remote data interaction and storage module. According to the system, through cooperation of multiple modules, parameters such as pressure and temperature are collected, a dielectric distribution image is reconstructed through an improved model, characteristic quantity is extracted, a slug flow stage is recognized, parameters are calculated, a mapping relation is constructed, coupling influences are processed, operation coding is completed by means of edge calculation, and data storage and transmission are achieved. According to the system, the defects that in the prior art, model parameter adjustment is incomplete, and real-time performance is poor due to dependence on cloud computing are overcome, and accurate and efficient metering of multiphase flow is achieved.

The invention provides a multiphase flow metering automatic control method and device, a medium and a program product, and is applied to an automatic control system of a multiphase flow metering device.The method comprises the steps that metering data from a mass flow meter, a gas flow meter and a liquid level meter are obtained, time synchronization processing and unification processing are conducted on the metering data, and a standardized data set is generated; based on the standardized data set, characteristic parameters representing the multiphase flow state are extracted, and a state parameter set used for describing the current flow state is generated; when at least one index in the state parameter set meets an abnormal judgment condition, an abnormal flow state is judged, and a corrected liquid level value is generated; and based on the deviation value between the corrected liquid level value and the reference liquid level, a feedback control signal is calculated, and the opening degree of the valve is dynamically adjusted, so that the liquid level of the fluid in the outlet pipeline is automatically maintained within the preset height range. According to the automatic adjusting mechanism, the liquid level in the outlet pipeline can be automatically adjusted within the preset height range, and stable output of the liquid phase is achieved.

The utility model discloses a flow measuring device which comprises a first flow meter, a second flow meter and a flow monitoring device which are arranged in a pipeline, the measuring range of the first flow meter is larger than that of the second flow meter, the flow monitoring device is used for detecting the flow in the pipeline, and a preset value is set in the flow monitoring device. The preset value is smaller than the measuring range of the first flowmeter; the flow monitoring device has two states, when the actual flow in the pipeline is larger than a preset value, the flow monitoring device is in the first state, and when the actual flow in the pipeline is smaller than the preset value, the flow monitoring device is in the second state. The medium flow can be respectively and accurately measured regardless of the size of the medium flow, the phenomena of flow measurement errors and distortion are eliminated, energy measurement is more accurate, and cost analysis is specific and easy to control.

To remove the dead volume in the sensor assembly of a mass flow controller.SOLUTION: A sensor assembly 16 of a mass flow controller includes: a first reservoir 22 coupled to a first pressure transducer 18 and communicating with a sampling flow path 64; a second reservoir 24 coupled to a second pressure transducer 20, communicating with the first reservoir 22 via a flow-through path 26, and further communicating with another sampling flow path 66; and a restrictor 68 disposed in the flow-through path 26 so as to face the first and second pressure transducers 18 and 20.SELECTED DRAWING: Figure 2A

A flow sensor configured to sense a flow rate of a fluid. The flow sensor includes a first nozzle and a second nozzle. The first nozzle is configured to receive a first portion of a fluid flowing within a flow path and develop a first differential pressure. The second nozzle is configured to receive a second portion of the fluid flowing within the flow path and develop a second differential pressure. Control circuitry is configured to determine the flow rate using at least one of the first differential or the second differential pressure.

The invention discloses an oil-gas-water three-phase flow measuring device and method based on a uniform-speed tube vortex street and a microwave antenna, and relates to the technical field of three-phase flow detection. The device comprises a bluff body, a pressure difference transmitter, a power divider and a microwave signal source, the bluff body is vertically placed at the central position in a target pipeline, two cavities, namely a high-pressure cavity and a low-pressure cavity, are formed in the bluff body, the high-pressure cavity and the low-pressure cavity are both connected with the pressure difference transmitter, one end of the bluff body is connected with a power divider, and the power divider is further connected with a microwave signal source; the high-pressure cavity is arranged on the incident flow surface of the bluff body, and the incident flow surface is the front side surface of the bluff body; the low-pressure cavity is arranged on the back flow surface of the bluff body; and the back flow surface is the rear side surface of the bluff body. The gas content and the water content of the oil-gas-water three-phase mass flow can be measured while the oil-gas-water three-phase mass flow is accurately calculated, the manufacturing cost of the measuring device is reduced, and the structure of the device is optimized.

The invention discloses a municipal pipe network inflow detection method and device, and relates to the field of municipal pipe network devices. A municipal pipe network inflow detection method comprises the steps that firstly, flow limiters are installed in an upstream pipe network and a downstream pipe network of a municipal pipe network, and at the moment, water in the municipal pipe network flows through the flow limiters; 2, electrifying and starting a current limiter; 3, detecting the liquid flow of an inlet and an outlet in the pipe network through a flow limiter, and recording data of a sunny day and a rainy day respectively; 4, according to the liquid level values of the inlet and the outlet of the flow limiter in the to-be-monitored pipe network in the sunny day, calculating the liquid level difference of the structure of the flow limiter in the to-be-monitored pipe network in the sunny day; impurities accumulated at the bottom of the flow limiter are effectively removed by expanding the settled impurities through the expansion air bag, directionally blowing through the air injection plate and cooperating with filter screen interception and knocking cleaning, the problem that liquid flowing is affected by impurity blockage is avoided, the liquid level detection stability is guaranteed, and manual regular cleaning is not needed.

A fluid measurement system is configured to measure fluid consumption of a vehicle. The fluid measurement system includes a housing coupled to the vehicle and including a supply inlet, a supply outlet, a return inlet, and a return outlet. The system includes a flow rate measurement module having a plurality of flow meters disposed within the housing, including a supply flow meter configured to measure a supply flow rate and disposed between the supply inlet and the supply outlet; and a return flow meter configured to measure a return flow rate and disposed between the return inlet and the return outlet; and a processor configured to calculate, based on the supply flow rate and the return flow rate, a fluid consumption rate, and transmit the fluid consumption rate.

This invention provides flow path sensing for a flow therapy device, which includes a sensing chamber for measuring the flow rate of gas supplied to a patient. The sensing chamber may be located after a blower and / or a mixer. The sensing chamber may include an ultrasonic transducer, a temperature sensor, a heated temperature sensing element, and / or a gas concentration sensor. The gas flow path used in conjunction with the sensor system prevents the generation of undesirable vortices in the gas flow that could cause anomalies in flow measurement.

The present invention discloses a metering method for an intelligent water meter, which relates to the technical field of water meter metering. It includes: arranging at least three water flow monitoring units in a target intelligent water meter through a combination method to obtain a monitoring unit set, and the monitoring unit set is used for individual metering and combined metering; through a first acquisition method, obtaining the water consumption segmented data of a target user to obtain segmented data items, and the segmented data items are used for segmenting the water consumption data of the target user. By arranging at least three water flow monitoring units in the target intelligent water meter in the present invention, and through the first acquisition method, obtaining the water consumption segmented data of the target user, and then through a second acquisition method, obtaining the temperature data and humidity data of the monitoring unit set, and matching the monitoring unit set through a matching method to obtain a target water flow monitoring unit, thus achieving an intelligent metering effect of automatically selecting a suitable water flow monitoring unit for metering according to different environments.

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 utility model relates to a cyclone separation type multiphase flow metering device, which belongs to the technical field of gas-liquid separators and comprises a cyclone separator, and a detection device for metering and detecting multiphase flow is arranged on the outer side of the cyclone separator. The detection device comprises a linkage valve controller fixedly connected to the upper side of the cyclone separator, a double-flange differential pressure liquid level meter fixedly connected to the side face of the cyclone separator and a gas differential pressure transmitter fixedly connected to the right end of the upper side of the cyclone separator. According to the cyclone separation type multiphase flow metering device, the gas-liquid outlet valve position is controlled through the linkage valve, then the liquid level of the cyclone separator is controlled, the cyclone separator is in a relatively stable state, the optimal separation effect is achieved, then the liquid flow is metered through the combination of the floating target flowmeter and the double-flange differential pressure transmitter, and the metering efficiency is improved. The gas flow is metered through the gas differential pressure transmitter and the temperature and pressure transmitter.

The invention relates to a device (1) comprising: a pipe (10); a Coriolis mass flowmeter (20) for measuring the mass flow of a medium flowing through the pipe; wherein a first pressure sensor (31) is attached in or on an inlet side portion of the pipe and a second pressure sensor (32) is attached in or on an outlet side portion of the pipe, and / or wherein a pressure difference sensor (33) is configured to detect a pressure difference between the inlet side portion of the pipe and the outlet side portion of the pipe, wherein the pressure sensors and / or the pressure difference sensor are configured to measure the medium pressure and to determine for each determination of the pressure difference a volume flow rate of the medium through the pipe; wherein a first monitoring sensor (41) is attached in or on the inlet side portion of the pipe and a second monitoring sensor (42) is attached in or on the outlet side portion of the pipe, wherein the monitoring sensors are configured to monitor a measurement variable different from the medium pressure in order to identify a static medium state.

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 chemical injection system for a resource extraction system includes a controller having a memory and a processor. The memory stores instructions that cause the processor to receive a first pressure from a first pressure sensor of the resource extraction system, receive a second pressure from a second pressure sensor of the resource extraction system, determine a flowrate of a produced fluid of the resource extraction system based on the first pressure and the second pressure, determine an ion concentration of the produced fluid, and adjust an injection rate of a chemical into the resource extraction system based on the flowrate of the produced fluid, the ion concentration of the produced fluid, or both.

A gas-liquid two-phase mass flow metering device based on critical flow mainly comprises an inlet straight pipe, a reducing pipe, a throat pipe, an expansion pipe, an outlet straight pipe, a temperature sensor, a pressure sensor, a differential pressure sensor, an ultrasonic transmitting probe, an ultrasonic receiving probe and the like. A swirler is arranged in the inlet straight pipe and used for adjusting the flow pattern, and the throat part is used for accelerating gas and liquid to form gas-liquid two-phase critical flow. The flow velocity of the gas-liquid mixture in the throat pipe is ingeniously obtained by measuring ultrasonic propagation, and then simultaneous measurement of the gas flow and the liquid flow is achieved in combination with a throttling equation. The method is not affected by factors such as pipeline gas-liquid phase flow patterns, radioactive measurement methods such as gamma rays are not adopted, and the method has the advantages of being low in operation cost, convenient to operate, high in measurement precision and the like.

The invention discloses an intelligent identification metering method and an automatic calibration method for multi-source signal fusion of optical identification and a vibration probe. An automatic charging device, a stirring barrel, an environmental noise simulation device, a test pipeline, the vibration probe, an optical sensor, a data acquisition instrument, an upper computer and a slurry pump are included. The automatic charging device is installed in front of the stirring barrel, materials can conveniently enter the system, the environment noise simulation device simulates environment vibration, the probe is placed in the testing pipeline and transmits data to the upper computer through the data acquisition instrument, and the slurry pump is connected between the stirring barrel and the testing pipeline. The electromagnetic flowmeter solves the limitation of a traditional electromagnetic flowmeter, and is suitable for complex working conditions in the fields of mining industry, metallurgy and the like.

The invention provides a portable light quantum mass absorption coefficient calibration device and method, and relates to the technical field of mixed-phase fluid measurement, the portable light quantum mass absorption coefficient calibration device comprises a shell, the shell is provided with a cavity communicated with the outside and a cover plate used for sealing the cavity, the cavity is internally provided with a light quantum probe, a light quantum source, a placement container and a processor, the placement container is detachably arranged on the shell, and the processor is arranged on the shell. The containing container is arranged between the light quantum probe and the light quantum source, the light quantum probe and the light quantum source are both electrically connected with the processor, and by the adoption of the mass absorption coefficient calibration device, the mass absorption coefficient calibration device which is convenient to carry and used for on-site actual flow calibration can be achieved by simplifying equipment.

The application discloses an oil and gas well multiphase flow metering system based on edge computing, comprising a multi-parameter cooperative acquisition and dynamic adaptation module, an improved electrical tomography data reconstruction and feature extraction module, a slug flow pattern recognition and dynamic parameter analysis module, a multiphase flow quality dynamic modeling and parameter coupling module, an edge real-time calculation and data compression and encoding module, and a remote data interaction and storage module. Through the cooperation of multiple modules, the system acquires parameters such as pressure and temperature, reconstructs the dielectric distribution image through the improved model, extracts the characteristic quantity, recognizes the slug flow stage and calculates the parameters, constructs the mapping relationship and processes the coupling influence, completes the operation and encoding with the help of edge computing, and realizes data storage and transmission. The system solves the defects of imperfect model parameter adjustment and poor real-time performance caused by dependence on cloud computing in the prior art, and realizes accurate and efficient metering of multiphase flow.

This application relates to a compressor intake pressure stabilizing device, including a compressor with an intake port; characterized in that the compressor intake pressure stabilizing device further includes an intake pipe, a regulating component, a venturi tube, a first flow monitor, a second flow monitor, and a central control module; the outlet end of the intake pipe is connected to the intake port; the regulating component is disposed on the intake pipe and located at the intake port; the regulating component has a degree of freedom to move radially along the intake pipe for opening and closing the intake port; the venturi tube is coaxially disposed within the intake pipe; the first flow monitor is disposed at the intake end of the intake pipe; the second flow monitor is disposed between the regulating component and the intake port; the central control module is electrically connected to the power sources of the first flow monitor, the second flow monitor, and the regulating component respectively; this application has the technical effect of automatically adjusting the air pressure before entering the compressor and improving the service life of the compressor.

The application discloses a kind of gas-solid two-phase flow flow monitoring devices, including measuring end and monitoring end;The measuring end includes probe, connecting rod, wind speed module and strain gauge, wherein probe is fixed on the inner wall of flow passage by connecting rod, and strain gauge is arranged on the connecting rod;Wind speed module is arranged in flow passage;The monitoring end includes control unit, control unit includes subtracter, first divider and second divider, and strain gauge and wind speed module are electrically connected with the input end of subtracter;The output end of subtracter and probe are electrically connected with the input end of first divider, and the first divider and second divider are electrically connected.The application can continuously monitor large flow particle flow online, and has good air tightness, and will not cause fluid leakage.

The invention discloses a mud concentration determining system and method for a dredging construction pipeline and a storage medium. In the system, a signal acquisition device is used for acquiring the side wall voltage and clear water conductivity of a first mud discharge pipe when a mud conveying device conveys clear water, the side wall voltage and mud temperature of a second mud discharge pipe when mud is conveyed, and the cooling water conductivity and cooling water temperature of cooling water in a mud pump cooling device; transmitting the acquired data to a signal processing device; the signal processing equipment is used for determining the conductivity of carrier liquid in the slurry according to the temperature of the slurry, the temperature of the cooling water and the conductivity of the cooling water; the signal processing equipment is used for determining the mud conductivity according to the carrier liquid conductivity in the mud, the clear water conductivity, the first mud discharge pipe side wall voltage and the second mud discharge pipe side wall voltage; and the signal processing equipment is used for determining the slurry concentration of the slurry discharge pipe when the slurry conveying equipment conveys the slurry based on the conductivity of the carrier liquid in the slurry and the conductivity of the slurry. The practicability and the precision of determining the slurry concentration are improved.

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).