164results about "Volume flow proportion measurement" patented technology

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 invention relates to the technical field of flow monitoring, and discloses an internal flow monitoring system for a mine paste filling anti-blocking pipe. Comprising a filling pipeline identification module, a risk pipeline analysis module, a pipeline analogue simulation module, a simulated pipeline simulation model, an attenuation rate calculation module, a flow attenuation rate calculation module, a pipeline flow early warning module and a pipeline flow early warning module, wherein the filling pipeline identification module is used for identifying filling pipelines in a filling pipe network; the risk pipeline analysis module is used for identifying risk pipelines with blockage risks; corresponding flow early warning information is formulated; according to the method, the flow change conditions of the risk pipeline at different time lines can be continuously monitored, and meanwhile, an analysis basis can be provided for the probability and severity of paste blockage in a subsequent filling pipe network; the dynamic change trend of the paste flow in the filling pipe network is accurately and flexibly monitored from the physical structure level and the virtual digital level, and the phenomenon that the filling pipe network is blocked by the paste is effectively avoided.

An arrangement for providing a fluid flow to a sensor, comprising a flow distributor plate (10) positioned in a flow channel, the flow distributor plate comprising a first surface (12a) and a second surface (12b) defining therebetween a fluid collection space (16); a plurality of holes (14) each forming a fluid flow channel through the flow distributor plate; and flow openings (18) in the side of each hole (14) of the plurality of holes configured to convey a part of the fluid flow in the hole (14) into the fluid collection space (16); the arrangement further comprising a sample flow guide (20) downstream of the second surface (12b) and configured to convey the fluid from the fluid collection space towards a sensor (90).

The embodiment of the invention provides multi-phase fluid proportion measuring equipment, method and device and a storage medium thereof, and relates to the field of oil and gas engineering. According to the device, an atom interference gravity sensor is arranged outside a multi-phase fluid area, the atom interference gravity sensor and the multi-phase fluid area are arranged in a spaced mode at a preset spacing distance, and the atom interference gravity sensor is used for detecting a gravity disturbance sequence generated by the multi-phase fluid area; the flow proportion measuring device is in signal connection with the atom interference gravity sensor, and the flow proportion measuring device is used for obtaining gravity disturbance and determining the multiphase fluid proportion of the multiphase fluid area in combination with the density inversion equation set of the multiphase fluid area and the multiphase proportion recognition model. The equipment measures the proportion condition of each phase of fluid based on gravity disturbance, and interference of high-pressure, high-temperature and high-salt environments of a wellhead on a measurement result can be avoided.

The problem to be solved by the present invention is to obtain an internal combustion engine control device capable of appropriately correcting an output value of a flow rate sensor provided in an intake flow path of the internal combustion engine and reducing an error between a corrected air flow rate and an actual air flow rate. A control device (100) for an internal combustion engine (10) of the present invention includes a CPU (103) that computes an intake air amount of the internal combustion engine based on a sensor signal of an air flow sensor (12) provided in an intake passage (15), computes a pulsation rate from a pulsation amplitude and an average air amount of the intake air amount, and calculates a correction value for correcting a pulsation error of the intake air amount using the pulsation rate and an engine rotation speed of the internal combustion engine. A computation device includes an engine pulsation correction map (131), a blow-by pulsation correction map (132), and a criteria determination unit (133) that selects and uses one of these two correction maps for calculation of the correction value based on a parameter for determining an operation area of the internal combustion engine.

The invention relates to a flow sensor comprising:-a housing (100), the housing (100) having an inlet channel (110) for receiving a fluid measurement medium, an outlet channel (120) for discharging the fluid measurement medium, a measurement channel (130) extending between the inlet channel (110) and the outlet channel (120), and a flow sensor (130) extending between the inlet channel (110) and the outlet channel (120), and more particularly at least one auxiliary channel (140) extending parallel to the measuring channel (130); -a sensor element (200) arranged in the measurement channel (130) for sensing a physical measurement variable relating to a flow rate of the fluid measurement medium; and-a first, in particular bolt-shaped, closure element (300) wherein the first closure element (300) is designed and attached to the housing (100) such that the first closure element (300) can be moved relative to the first fluid transport element (150) or the second fluid transport element (160) into at least one first position (P1) and one second position (P2), the first closure element (300) closes the first fluid transport element (150) or the second fluid transport element (160) in the second position (P2), and wherein the first fluid transport element (150) or the second fluid transport element (160) is not closed in the first position (P1) of the first closure element (300). The invention also relates to a system comprising a flow sensor according to the invention.

The invention relates to a cover element for a flow measuring device, comprising a positive-locking receptacle for the bypass channel and pin-shaped flow resistance elements for throttling the fluid flow and fixing the cover element. The invention further relates to a flow measuring device comprising a main channel, a bypass channel, a measuring element, and such a cover element, thereby achieving a cost-effective and simple implementation of the bypass channel.

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.

A mounting tool configured to mount a measuring device inserted into a pipe, such as a flowmeter, includes: a receiving device configured to receive a sensor neck of the measuring device; a pointer device configured to indicate an alignment of the mounting tool fastened to the receiving device; and a fastening device, wherein the receiving device includes a body with two end faces that run parallel to one another, and an edge surface connecting the end faces, wherein on at least one of the end faces the body has a first marking configured to be brought into alignment with a second marking of the sensor neck, wherein the pointer device has a laser by which an alignment of the mounting tool can be adjusted.

The present invention discloses a multiphase flowmeter for mixed gas and liquid, and relates to the field of flow measurement technology. The present invention includes a measuring chamber, a conductive electrode plate, a permanent magnet and a detection assembly. By arranging multiple measuring temperature plates and a reference temperature measuring plate in the measuring chamber, controlling the temperature with a heating wire, and combining the design of a temperature conducting block and a heat receiving block, accurate measurement of the fluid flow rate is achieved. The device converts temperature changes into resistance changes through mechanical displacement transmission, thereby obtaining the flow rate information of the fluid. By utilizing the combination of the conductive electrode plate and the permanent magnet, electromagnetic induction is used to measure the potential difference generated by the conductive liquid in the magnetic field to determine the volume ratio of gas and liquid in the fluid.

Combustion device with mass flow sensor. Combustion device comprising a burner (1), a side channel (24), and a feed channel (11); wherein the side channel (24) includes an inlet, an outlet, and a mass flow sensor (13) located between the inlet and the outlet of the side channel (24); wherein the mass flow sensor (13) is configured to detect a signal corresponding to a flow rate (15) of a fluid through the side channel (24); wherein the mass flow sensor (13) is flush with the inner wall of the side channel (24) or projects into the side channel (24); wherein the side channel (24) comprises a first section and a second section; wherein the first section of the side channel (24) is different from the second section of the side channel (24); wherein the first section of the side channel (24) includes the mass flow sensor (13); and wherein the first section of the side channel (24) projects into the feed channel (11).and wherein the first section of the side channel (24) projects into the supply channel (11) such that the mass flow sensor (13) is arranged within the supply channel (11).

Gas meter (10) comprising: - a containment casing (11), - an inlet mouth (15) and an outlet mouth (16) for the passage of a gas flow, respectively entering inside the meter (10) and exiting the meter (10), - a detection module (19) which is housed inside the containment casing (11) and which is configured to detect at least one parameter of the gas entering / passing through the meter itself, said detection module (19) comprising a measurement duct (20) for the passage of the gas to be detected, - a plurality of through holes (50) which are obtained on the side walls of an outlet duct (40), or on a wall of an outlet structure, which is housed inside said containment casing (11) and it is fluidly connected, preferably sealed, upstream with the measurement duct (20) of the detection module (19) and downstream it is connected, preferably sealed, with the outlet mouth (16) of the meter (10), said plurality of through holes (50) defining a plurality of passages for the gas towards the outlet mouth (16) without crossing the detection module (19).

The utility model discloses a metering device and flue gas treatment equipment. The metering device comprises a first pipe, a second pipe, a purging pipe, a proportional valve and a purging valve; the first pipe is used for conveying compressed air; the second pipe and the first pipe are arranged in parallel at an interval; the second pipe is used for conveying a reducing agent; the first end of the purging pipe is communicated to the first pipe, the second end of the purging pipe is communicated to the second pipe, and the purging pipe is a hose; the proportional valve is arranged on the second pipe; the purging valve is arranged on the purging pipe and used for controlling the purging pipe to be connected or disconnected. Therefore, the first pipe and the second pipe are arranged in parallel at an interval, the space environment of the interval between the first pipe and the second pipe is simple, parts of the metering device can be maintained or replaced in the interval, and the operation of maintaining or replacing the parts of the metering device is convenient; and a hose is arranged, so that the purging pipe is convenient to place.

The present invention discloses a detection method and a detection device for the replacement requirement of an oilfield produced water filter plate, including: S1. Collect data in real time according to the filtration state of the filter plate to determine the first flow rate at the water intake inlet and the second flow rate at the filtration outlet; S2. Judge whether to start the flushing step according to the obtained first flow rate and second flow rate; S3. Calculate the change rate and passing ratio of the passing property of the flushing liquid according to the real-time monitoring data of the flow rate in the flushing step; S4. Calculate the change rate of the real-time current of the filter plate, the replacement coefficient and the average change rate of the current under the flushing state according to the real-time monitoring data of the resistance in the flushing step; S5. Measure the weight of the solid particles on the filter support plate in the buffer chamber after flushing and judge the change rate of the solid particle weight according to the historical data; S6. Judge the service life of the filter plate. The present invention can accurately and scientifically judge whether the filter plate needs to be replaced under the condition of non-stop operation.

A monitoring device for monitoring a flow of a fluid like a breathing gas comprises a main flow path (10) for the fluid between an inlet (11) and an outlet (12). A flow sensor (15) is associated with the main flow path. A flow restrictor (14) is arranged in the main flow path. A secondary flow path (20) for the fluid branches off from the main flow path upstream of the flow restrictor and merges with the main flow path downstream of the flow restrictor. The secondary flow path has higher flow resistance than the main flow path. At least one fluid property sensor (24; 25) for determining at least one property of the fluid in the secondary flow path (20) is associated with the secondary flow path (20). Also disclosed is a ventilation system that comprises the monitoring device and a patient interface (30).

Provided herein generally are methods of accounting for hydrogen (H2) in a natural gas (NG) stream, i.e., a NG / H2 blend, from a public NG utility to residential and / or business facility fuel cell (FC) systems, where the NG / H2 blend powers the FC systems and the volume of NG / H2 blend supplied to each FC systems is measured. Such measurements along with other data of the operation of the FC system, such as the volume of NG / H2 blend or an increased volume of NG, can be reported or transmitted to the public NG utility for each residential and / or business facility FC system supplied with the NG / H2 blend, where a reduced carbon footprint can be determined for the use of the NG / H2 blend by the FC system(s).

Various embodiments include a combustion apparatus. An example apparatus includes: a burner; a side duct; and a feed duct. The side duct comprises an inlet, an outlet, and a mass flow sensor between the inlet and the outlet of the side duct. The mass flow sensor is configured to detect a signal corresponding to an amount of flow of a fluid through the side duct. The side duct comprises a first portion and a second portion. The first portion of the side duct comprises the mass flow sensor. The first portion of the side duct is arranged within the feed duct.

The present application belongs to the technical field of flow meter, disclose a kind of two-phase flow meter and detection method for detecting gas phase, liquid phase simultaneously, two-phase flow meter includes main pipeline, detection mechanism, confluence mechanism, detection mechanism includes gas flow meter, liquid flow meter, first separation component and second separation component;Main pipeline is connected with the import of first separation component, second separation component is connected on one end of first separation component, gas flow meter is connected on the other end pipeline of first separation component, one end of second separation component is connected with liquid flow meter pipeline, the other end of second separation component is connected with gas flow meter pipeline, confluence mechanism is connected with the one end of gas flow meter away from first separation component and the one end of liquid flow meter away from second separation component.The present application improves the flow detection precision of gas-liquid mixed fluid, and then improves the quality of gas-liquid mixed fluid for production.

The invention relates to the technical field of flow measurement, and particularly discloses a mixed particle multichannel dynamic flow measurement and analysis device which comprises a machine body, a plurality of fixing holes are formed in the top end and the bottom end of the machine body, conveying pipes are installed in the fixing holes, and the conveying pipes close to the two ends of the machine body are arc-shaped. Fixing plates are installed above and below the machine body, the fixing plates are located on the side face of the end, away from the machine body, of the conveying pipe, placing holes are formed in the side, close to the fixing plates, of the outer wall of the conveying pipe, fixing rings are installed in the conveying pipe and located on the side face of the placing holes, electromagnet rings are installed at the tops of the fixing rings, and check blocks are placed in the electromagnet rings; and a conical iron block is mounted at the top of the stop block. When the material flow reaches a specified value, the top end of the fixing ring is automatically and quickly sealed through the check block, the conical iron block and the weight of materials on the conical iron block.

The invention provides a physical quantity measuring device capable of improving design freedom. A physical quantity measurement device (15) is provided with: a lead frame (40); a flow rate detection element (41) that is mounted on the lead frame (40) and detects an air flow rate; a semiconductor chip (42) mounted on the lead frame (40) and connected to the flow rate detection element (41) via a lead wire (44); a plurality of terminals (43A) that include terminals (43A2) connected to the semiconductor chip (42) via wires (45A) and that are bent; a suspension pin (46A) disposed adjacent to one terminal (43A1) of the plurality of terminals (43A), the one terminal (43A1) being located on the side closer to the flow rate detection element (41); and a resin body (48) partially covering the lead frame (40), the flow rate detection element (41), the semiconductor chip (42), the plurality of terminals (43A), and the suspension pin (46A). The potential of the suspension pin (46A) is the same as the potential of one terminal (43A1). The distance (W1) between the suspension pin (46A) and the one terminal (43A1) is narrower than the distance (W2) between the one terminal (43A1) and the other terminal (43A2) adjacent to the one terminal (43A1).

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.

Detection device for a physical quantity (300), comprising: a housing (301) having a connection (303) and forming part of a through-passage (100); and a support body (600) which is configured to support a flow rate detection element (601), wherein the housing (301) has a neutralization area (500), wherein the carrier body (600) is arranged in the housing (301) such that a detection unit of the flow rate detection element (601) faces the neutralization area (500), and wherein in the housing (301) a contact section with the carrier body (600) and a surface of the neutralization area (500) are essentially flush.

The electronic control device of the present application is provided with: a flow rate calculation section that calculates the flow rate of intake air from an output signal of a flow rate measuring device attached to an intake pipe; a flow rate correction value calculation section that calculates an average value, a maximum value, a minimum value, and an amplitude of a signal of one or more frequencies included in the output signal of the flow rate measuring device and above a fundamental frequency of the output signal of the flow rate measuring device, for a prescribed period, of the flow rate of intake air calculated by the flow rate calculation section, and calculates a correction value for the flow rate of intake air from the calculation results; and a flow rate correction section that corrects the flow rate of intake air according to the correction value.

A method for detecting a leak rate of a displacement pump (2,15) integrated in a laboratory automation apparatus (1) comprising a valve (4,10), the displacement pump and a pressure sensor (3); a) closing the valve (4,10); b) pressurizing the system (21) with a liquid to an initial pressure P1 using the displacement pump (2,15); c) monitoring the pressure by the pressure sensor (3) during time period Δt starting from initial pressure P1 at time t1; d) detecting a second pressure P2 at t2 at the end of the time period Δt, wherein pressure P2 is below pressure P1 when leakage occurs; e) repressurizing the system to pressure P1 by displacing an additional volume ΔV of the liquid using the displacement pump (2,15), and f) calculating the leak rate by dividing the additional volume ΔV by the predetermined time period Δt.

A physical quantity measurement device is provided which is capable of measuring a component in a fluid to be measured even when the fluid contains droplets such as fine water droplets. The physical quantity measurement device includes, at an inlet opening (5) of a sub-channel (7), an inflow direction regulator (13) which includes guide pieces (12) each of which is inclined at predetermined angle θ with respect to the flow direction in a main channel (1). The angle θ of inflow direction regulator (13) is set to a value that is greater than 90 degrees in relation to the flow direction of the main channel (1).

The invention relates to a portable, handheld spirometer (1) comprising a MEMS-based thermal fluid flow sensor (13, 13.1, 13.2) for generating a signal in response to a fluid flow generated during inhalation or exhalation; and a microcontroller (14) for calculating the fluid flow from the signal generated by the flow sensor (13, 13.1, 13.2). The spirometer (1) may be connected to other devices, such as a smartphone or a personal computer or any other computing unit which is adapted to collect, store, analyse, exchange and / or display data. The invention further describes the use of the spirometer (1) in measuring a user's lung performance and / or monitoring it over time. Furthermore, the spirometer (1) may be provided in a system together with an air quality measurement device for determining the air quality at a location of interest; and a computing unit for collecting, analysing and correlating the user's lung performance data obtained from the spirometer (1) with the air quality data, and optionally geolocalisation data of said location.

The invention relates to the technical field of transport boxes, and discloses an intelligent transport box which comprises an outer box body, an inner box isolation box is clamped in the middle of the outer box body, an inner box body is clamped in the middle of the inner box isolation box, and an outer box cover is clamped at the upper end of the outer box body. An air purifier is fixedly arranged on the inner wall of one side of the inner box isolation box, a power supply control box is fixedly arranged on the inner wall of the other side of the inner box isolation box, a semiconductor detector is fixedly arranged on the inner wall of one side of the inner box body, and an air purification ventilation valve is fixedly arranged at the lower end of the middle of one side of the outer box body. According to the device, a real-time semiconductor radiation monitoring instrument is arranged in the device at the same time so that abnormal conditions can be found in time, a semiconductor refrigeration plate is installed in the power supply control box, the temperature in the box body can be controlled through the power supply control box, and the device is provided with multiple layers of anti-radiation shells, so that the anti-radiation performance of the device is improved, and people can use the device conveniently.

Pressure control methods and devices are provided. A pressure controller includes a control valve configured to control pressure of a fluid in a flow path, a flow restrictor disposed in the flow path, and distal and proximal pressure sensors. The distal pressure sensor detects fluid pressure at the flow restrictor at a location distal from the control valve, and the proximal pressure sensor detects fluid pressure at the flow restrictor at a location proximal to the control valve. The pressure controller further includes a controller configured to: 1) control actuation of the control valve based on pressure as detected by the distal pressure sensor and a pressure setpoint, and 2) determine a mass flow rate based on pressure as detected by the distal and proximal pressure sensors.