113results about "Volume flow proportion measurement" patented technology

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 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.

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.

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).

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.

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 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.

Sensor arrangement (10) for determining at least one parameter of a fluid medium flowing through a channel structure (22), in particular an intake air mass flow of an internal combustion engine, wherein the sensor arrangement (10) comprises a sensor housing (12), in particular a plug-in sensor inserted or insertable into a flow tube, in which the channel structure (22) is formed, and at least one sensor chip (42) arranged in the channel structure (22) for determining the parameter of the fluid medium, wherein the sensor housing (12) has an inlet (34) into the channel structure (22), which points against a main flow direction (36) of the fluid medium, and an outlet (82) from the channel structure (22), wherein the channel structure (22) is bounded by channel walls (94, 96), wherein the channel structure (22) comprises a main channel (24) and a measuring channel (28), wherein the measuring channel (28) is separated from the main channel (24). branches off,wherein the sensor chip (42) is arranged in the measuring channel (28), wherein the main channel (24) and the measuring channel (28) are joined in a junction section (88) which adjoins an outlet section (92) with the outlet (82) from the channel structure (22), wherein at least one channel wall (94) of the channel walls (94, 96) in the outlet section (92) has curved wall sections (98, 100, 102), wherein the curved wall sections (98, 100, 102) are configured such that a tangent (104) at a transition (106) between two curved wall sections (98, 100, 102) extends in the direction of the measuring channel (28), characterized in that the sensor housing (12) defines a longitudinal extension direction (120) which is perpendicular to an end face (30) of the sensor housing (12), wherein the outlet (82) is inclined relative to the longitudinal direction (120) in the main flow direction (36) and the curved wall sections (98, 100,102) are arranged on a channel wall (94) facing away from the measuring channel (28) in the outlet section (92).

The present invention relates to a thermal flow sensor (1) for a flow meter. The thermal flow sensor (1) comprises a main channel portion (3b), a sensor tube (4), and a thermally conductive frame element (13). The main channel portion (3b) comprises a main channel (3) for a medium whose flow rate is to be determined. The sensor tube (4) comprises a first tube portion (5) with an inlet (6) fluidly connected to the main channel (3), a second tube portion (8) with an outlet (9) fluidly connected to the main channel (3) on the opposite side of the inlet (6), a sensing portion (11) connected to the first tube portion (5) and the second tube portion (8) so that the fluid flows from the inlet (6) to the outlet (9) through the sensor tube (4), and at least two sensing heating elements (12) for measuring a temperature or power difference within the sensor tube (4) to determine the flow rate. A thermally conductive frame element (13) contacts the first tube portion (5), the second tube portion (8) and the main channel portion (3b) to equalize the temperature gradient across the first tube portion (5), the second tube portion (8) and the main channel portion (3b). The thermally conductive frame element 13 is a printed circuit board (PCB) 14.

The utility model discloses a self-gravity infrared system octane number standard fuel automatic sample matching device, which relates to the technical field of sample matching and comprises a sample matching frame, a supporting plate is arranged on one side of the inner top of the sample matching frame, a plurality of gallon barrels are arranged on the top of the supporting plate, and weight detection components are arranged at the bottoms of the gallon barrels. A plurality of measuring tubes are arranged on the other side of the top of the sample distribution frame, a mixing assembly matched with the measuring tubes is arranged on one side of the inner bottom of the sample distribution frame, and infrared detection devices matched with the mixing assembly are arranged at the two ends of the outer portion of the sample distribution frame. According to the utility model, the weight of materials in the gallon barrel can be monitored in real time, the accuracy of each-time sample preparation is ensured, according to weight data fed back by the weighing sensor, when the materials in the gallon barrel reach a fixed value of blanking, the pinch valve is opened through the controller, the materials are conveyed into the hose, and the materials naturally flow into the hose under the action of self-gravity, so that the sampling accuracy is ensured. And no additional pump or pressurization equipment is needed.

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 present invention addresses the problem of providing an electrical circuit device enabling a reduction in thermal stress acting on an interface between a conductor piece and a sealing material, and suppression of peeling of the sealing material from a housing. This invention is characterized in that a physical quantity measurement device 20 constituting an electrical circuit device is provided with a housing 201 having a circuit chamber 235 that opens on a front surface 221, three or more conductor pieces 301 that are insert-molded in the housing 201 and have distal end parts 312a lined up and exposed in the circuit chamber, a circuit board 207 accommodated in the circuit chamber, wires 303 connecting between the three or more conductor pieces and the circuit board, and a sealing material 211 that fills the circuit chamber, the three or more conductor pieces being configured such that distal end parts 312a, 313a, which are located in the middle, have a smaller cross-sectional area than that of distal end parts 311a, 314a that are located at the two ends of the alignment direction.

An apparatus for controlling a flow rate of a gas is disclosed herein, including a flow restriction element configured to restrict a flow rate of a gas; a pressure regulator coupled to an inlet of the flow restriction element, wherein the pressure regulator is configured to control a pressure of the gas between the pressure regulator and the flow restriction element; a flow meter coupled to an outlet of the flow restriction element, wherein the flow meter is configured to measure the flow rate of the gas at the outlet of the flow restriction element; and a controller operatively coupled to the pressure regulator and the flow meter, wherein the controller receives the flow rate measurement of the flow meter, determines a pressure setting associated with a target flow rate, and causes the pressure regulator to have the pressure setting.

This invention relates to the field of heat dissipation technology for electronic devices, aiming to solve the problem that existing technologies cannot accurately test the flow rate of the manifold in a liquid-cooled heat dissipation chassis. It provides a method for testing the flow distribution of a liquid-cooled chassis, comprising the following steps: S1: Designing a flow rate and differential pressure testing device to test the liquid-cooled module and determine whether it meets the requirements; S2: Designing a variable flow resistance liquid-cooled test card, constructing a flow rate-differential pressure calculation and testing model, inserting the variable flow resistance liquid-cooled test card into the flow rate and pressure testing device, and adjusting the variable flow resistance liquid-cooled test card to maintain a consistent pressure difference between the liquid-cooled module and its inlet and outlet ends at the rated flow rate; S3: Establishing the flow rate and differential pressure equation and plotting the flow rate and differential pressure curve; S4: Inserting the adjusted variable flow resistance liquid-cooled test card into the liquid-cooled chassis for testing, obtaining and analyzing the flow data based on the flow rate and differential pressure curve, and determining the uniformity of the flow distribution.

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.

Flow measuring device (1) comprising a housing (11), a cover (31) and a subchannel (12) formed by the housing (11) and the cover (31) in a cooperating manner, wherein the flow measuring device (1) comprises: a printed circuit board (15) which is mounted on the housing (31) and of which part is arranged in the sub-channel (12); a carrier body (10) which is mounted on the circuit board (15) and of which a part is arranged in the subchannel (12); a flow measuring element (4) which is mounted on the carrier body (10) and whose measuring surface is arranged in the lower channel (12); a first cavity (32) formed from a surface of the carrier body (10) and a surface of the circuit board (15) in which the flow measuring element (4) is arranged on one surface side of the carrier body (10) such that the measuring surface of the flow measuring element (4) faces the surface of the part of the circuit board (15) arranged in the subchannel; a second cavity (33) formed by a surface opposite one surface of the circuit board (15) and the housing (11); and a third cavity (34) which is formed from one of the surfaces opposite the support body (10) and the cover (31).

Methods and systems for mitigating condensation in a sensor module of a combustion appliance are disclosed. In one example, a fluid flow from a main conduit is cooled with a passive heat exchanger. A sensor of a sensor module may be heated to a temperature above the cooled fluid flow. Cooling the incoming fluid flow with a passive heat exchanger and / or heating the downstream flow sensor may help mitigate condensation in the sensor module, and in particular, on the sensor device. This may help increase the reliability of the system.