276results about "Volume/mass flow by mechanical effects" patented technology

The invention discloses a three-rotor flow meter device, a control method and a control system, the three-rotor flow meter device comprises a shell, a plurality of rotors and a data acquisition unit, and the data acquisition unit is used for acquiring multi-modal data such as front and back pressure difference, medium temperature, absolute viscosity, vibration spectrum and rotating speed of the rotors in real time. The control system carries out real-time fusion and processing on collected original data through a decision making unit, calculates simulation slip flow based on a digital twinning dynamic compensation model, and corrects pulse equivalent in real time through an execution unit, so that high-precision dynamic compensation of flow output is achieved, and it is ensured that measurement errors are always within a preset range. Meanwhile, the system has an intelligent early warning function, and early fault diagnosis and predictive maintenance can be realized based on multi-parameter threshold comparison. According to the three-rotor flow meter, the measurement precision, stability and reliability of the three-rotor flow meter under the complex working condition are remarkably improved, and the three-rotor flow meter is particularly suitable for flow measurement under the high-viscosity medium condition.

A flow sensor for sensing fluid flow. The flow sensor includes an exterior, interior, a circuit board, and first and second ports. The first and second ports permit fluid to flow into and out of the interior. A Hall Effect Sensor in the interior detects the number of revolutions of an impeller. An electric coupler interfaces with the flow sensor and a transmitter for communication of the revolutions of the impeller to a controller. The controller determines the rate of fluid flow in a conduit. The controller issues a command signal to a component of a hydraulic system to alter the rate of fluid flow in the conduit.

The invention discloses a metal tube float flowmeter based on an intelligent sensor, and relates to the technical field of float flowmeters, the metal tube float flowmeter comprises a tube body and a detection mechanism, an instrument is fixed on the outer side of the tube body through a bolt and used for realizing flow display, the instrument is connected with a Hall element, the detection mechanism used for flow detection is installed in the tube body, and the Hall element is connected with the detection mechanism. And the locking mechanism is used for realizing initial locking of the detection mechanism. According to the metal tube float flowmeter based on the intelligent sensor, the elastic regulation and control mechanism is arranged at the position of the liquid inlet of the tube body, peak kinetic energy of fluid is actively absorbed through elastic deformation of the first spring, and therefore the fluid entering the tube body can be buffered, pulsating flow of the external input fluid is effectively converted into stable flow, and the flow rate of the fluid is increased. Jumping of the floater body is greatly reduced, the problem that reading is difficult due to jumping of the floater body can be solved, the positive error of an average measured value caused by pulsation can be avoided, and the accuracy of detection data is guaranteed.

The invention relates to the technical field of measurement, in particular to the technical field of monitoring the state of invisible fluid by measuring and estimating the flow of the fluid through pulsed light signals, and particularly discloses a hydropower station gallery grouting state monitoring method based on pulsed light signal measurement. The method comprises the steps of grouting hole background parameter collection, real-time grouting process parameter collection, data processing and abnormal feature extraction, the grouting state is judged according to a matching result, and feedback decisions of grouting system maintenance, pressurization, pressure reduction, intermittent grouting or stop of replacement of new grout are given. The method can objectively and directly confirm that the target fracture and the stratum are filled with the grout, a non-tampering original data chain is provided for grouting quality evaluation, and the long-term safety and reliability of hidden projects such as hydropower station dams and dam foundations are greatly improved.

The invention provides a water meter variable-pitch impeller assembly which comprises an impeller shell, a water meter variable-pitch impeller, a water meter variable-pitch impeller, a water meter variable-pitch impeller and a water meter variable-pitch impeller. The multiple blades are evenly distributed in the circumferential direction, the blades are rotationally installed on the side wall of the impeller shell through blade shafts, and the rotating axes of the blades are perpendicular to and intersect with the axis of the impeller shell; the first bevel gear is arranged at the end part of the blade shaft; the inner barrel is fixed in the mounting cavity and is coaxial with the impeller shell; the second bevel gear is coaxial with the inner cylinder body, is rotatably mounted at the upper end of the inner cylinder body, and is meshed with each first bevel gear; and the motor is coaxially fixed in the inner barrel, the output end of the motor is connected with the second bevel gear and used for driving the second bevel gear to rotate, and then the deflection direction and the deflection angle of the blades can be adjusted. According to the variable-pitch impeller assembly of the water meter, the rotary blades are adopted, the deflection angle and direction of the blades can be accurately controlled, the variable-pitch impeller assembly can adapt to different water flow environments, the application range is wide, the service life is long, and bidirectional accurate metering can be achieved.

This invention provides a smart, energy-saving water meter with anti-drip function and its installation method, belonging to the field of water meter technology. The smart, energy-saving, anti-drip water meter includes a water meter, two water inlets fixedly connected to both sides of the water meter, a sleeve fixedly connected to the circumferential surface of one of the water inlets, and a locking mechanism including a first fixing ring, a second fixing ring, bolts, bolt rings, and a water pipe. Four bolts are provided. The water pipe is located inside the sleeve. The bolt rings are fixedly connected to the circumferential surface of the water pipe, the first fixing ring is fixedly connected to the circumferential surface of the sleeve, the second fixing ring is fixedly connected to the circumferential surface of the water pipe, and the bolt rings are threaded to the inner circumferential wall of the sleeve via a threaded rod and nut. When it is necessary to fix the water pipe and the sleeve, they can be connected through the locking mechanism. This ensures stability when the sleeve and the water inlet are connected and prevents leakage during water use, protecting the stable operation of the water source.

The invention provides a helical vane type water meter, and belongs to the technical field of water meters. The partition plate is arranged in the water inlet cavity of the flow channel of the shell and located on the side far away from the water inlet, water flow entering the water inlet cavity can be blocked at the far end, the turbulent flow influence caused by direct impact of the water flow is avoided, the monitoring precision is improved, and meanwhile, the water flow is prevented from entering the water inlet cavity. The impeller assembly is rotationally installed in the fluid director which is formed by directly connecting and combining the upper fluid guiding part and the lower fluid guiding part, so that the structure for supporting the impeller assembly is simpler, the number of structures needing to be matched with each other is small, the problem that the two ends of a rotating shaft of an integrated impeller are not coaxial due to machining and assembling precision is solved, structural errors are reduced, and the machining efficiency is improved. Besides, one end of the rotating shaft of the integrated impeller extends out of the fluid director and then is provided with a magnet, the magnet is isolated from water flow, the problem that the magnet is interfered by impurities such as rust existing in the water flow is avoided, the monitoring precision of the water meter is further improved, and the service life is prolonged.

A system may include a disposable flow sensor and a base for the disposable flow sensor. A method may include scanning, with an optical scanner of the base for the disposable flow sensor, a flow sensor label attached to the disposable flow sensor to decode a flow sensor identifier associated with the flow sensor, scanning, with the optical scanner of the base for the disposable flow sensor, a patient label attached to a patient to decode a patient identifier associated with the patient, and connecting the disposable flow sensor to the base.

To provide a water meter unit control system capable of detecting water leaks with high accuracy.SOLUTION: A water meter unit 10, a waterworks department side information terminal 20 and / or a user side information terminal 30 are connected in a communicable state through a network. The water meter unit 10 includes a water meter 1 for measuring the flow rate of water flowing in plumbing, a valve 2 provided on an upstream side or a downstream side of the water meter 1 in the plumbing, and a control unit 3 for controlling the water meter 1 and the valve 2. The control unit 3 detects a water leak in the case of determining that water is caused to flow after the elapse of a prescribed continuous usable time on the basis of a measurement result of the water rate of water by the water meter 1, and notifies the waterworks department side information terminal 20 and / or the user side information terminal 30 of the water leak of the plumbing through the network.SELECTED DRAWING: Figure 1

An agricultural system for determining a header throughput of a harvester includes a header having a frame and an auger assembly supported relative to the frame. The auger assembly includes an auger configured to direct a flow of harvested materials through the header, and an auger support assembly, the auger support assembly having an auger support member configured to support the auger relative to the frame, with the auger being rotatable relative to the auger support member. The agricultural system further includes a sensor associated with the auger assembly, where the sensor is configured to generate data associated with a load-related parameter of the auger support assembly. Additionally, the agricultural system includes a computing system communicatively coupled to the sensor and configured to receive the data generated by the sensor and to determine a header throughput based at least in part on the data.

A traverse mechanism for measuring flow characteristics in a fluid flow path is provided. The traverse mechanism includes a rotating member configured to rotate 360 degrees about an axis in a circumferential direction. The traverse mechanism also includes a probe coupled to the rotating member. The probe extends in a radial direction relative to the axis through a portion the rotating member into the fluid flow path. Rotation of the rotating member enables the probe to map or measure one or more flow characteristic in the fluid flow path 360 degrees about the axis in the circumferential direction.

The invention discloses a large-pipe-diameter flow measuring device which comprises a rectifying grating, a reducing branch pipe, a stop valve assembly and a flow meter, and the rectifying grating is arranged on the inner wall of a main pipe; the inlet section of the reducing branch pipe extends into the main pipe, is arranged at the center of the main pipe and is positioned at the downstream position of the rectifying grid, the outlet section of the reducing branch pipe is communicated with the main pipe again, and the pipe orifice of the inlet section of the reducing branch pipe is of a reducing structure; the stop valve assembly is arranged in the reducing branch pipe; the flow meter is arranged at the middle section of the reducing branch pipe, a data processing module is arranged in the flow meter, and the data processing module can calculate the fluid flow in the main pipe through the measured flow in the reducing branch pipe by combining parameters such as the pipe diameter proportional relation of the main pipe and the reducing branch pipe. The flow state of fluid is effectively improved, and the precision of flow measurement in the whole large-pipe-diameter main pipe is improved.

The utility model relates to the technical field of medical apparatus and instruments, and provides a flow testing device which comprises a water storage tank, a flow meter and a flow meter, an inlet of the constant liquid level tank is communicated with an outlet of the water storage tank through a connecting pipe, and when the switch is turned on, the experimental water in the water storage tank flows into the constant liquid level tank through the connecting pipe; an overflow port is formed in the side wall, close to the top, of the constant-liquid-level tank, and when the water level in the constant-liquid-level tank exceeds the overflow port, redundant experimental water is discharged through the overflow port, so that the water level of the constant-liquid-level tank is kept constant; one end of the test hose is connected with the outlet of the constant liquid level tank; and the test connector is connected with one end, far away from the constant liquid level tank, of the test hose and is used for connecting a tested medical pipeline. Compared with the prior art, the flow testing device provided by the utility model has the advantages that the whole flow testing device is simple and effective in design and operation method, software and electronic components do not need to be matched for use, and the flow testing device is more friendly to operators.

A measurement system that can be used at a patient's bedside to monitor the amount of blood withdrawn from the patient. The system uses disposable sensors and electronics to accurately measure the amount of blood withdrawn from the patient in real time using a paddle wheel sensor. The rotation of the paddle wheel is correlated to the amount of blood withdrawn and collected from the patient.

The invention discloses a performance testing device and a performance evaluation method of a greenhouse gas analyzer. The device comprises a multi-port selector valve, a plurality of input ports of the multi-port selector valve are respectively connected with first to nth input gas paths, and an output port of the multi-port selector valve is respectively connected with a gas path of an instrument to be tested and a gas path of a standard instrument through a three-way interface; the to-be-measured instrument gas path and the standard instrument gas path are the same in gas path structure and comprise a stop valve and a three-way connector which are connected in sequence, one of the three-way connectors is used for being connected with the rotor flow meter, the other one of the three-way connectors is used for being connected with the mass flow controller, and the mass flow controller is used for being connected with the to-be-measured instrument or the standard instrument. The test requirements of performance evaluation of the greenhouse gas analyzer, including calibration and linear test, repeatability and drift test, water vapor correction test and the like, can be met, relatively complex matrix effect test and comparison test between instruments can also be performed, and the condition that a test pretreatment device is repeatedly built in the long-term test process is avoided.

Apparatus can comprise a conduit with at least one slot of a plurality of slots comprising an intermediate length including a maximum width that is less than a maximum width of a first end portion and / or a maximum width of a second end portion of the slot. In some embodiments, methods produce a glass ribbon with an apparatus comprising at least one slot within a peripheral wall of a conduit. In some embodiments, methods are provided for determining a volumetric flow profile dQ(x) / dx of molten material flowing through a slot in a peripheral wall of a conduit. In some embodiments, methods and apparatus provide a slot extending through an outer peripheral surface of a peripheral wall of a conduit that can comprise a width profile d(x) along a length of the slot to achieve a predetermined volumetric flow profile dQ(x) / dx of molten material through the slot.

Implementations of a fluid flow sensing assembly may include a first shell coupled with a second shell including a central vane structure; a blade assembly rotatably coupled within the central vane structure, the blade assembly including one or more flags extending from a central hub; and a one or more fluid flow sensor elements coupled with the second shell of the flow sensor, the one or more fluid flow sensor elements configured to detect motion of the one or more flags where the assembly may be configured to be coupled with one or more scent diffusers.

The utility model relates to the technical field of pressure detection, and discloses a hydraulic engineering pressure detection device. The hydraulic engineering pressure detection device comprises a protective shell, a protective cover, a water pipe, fan blades, a detection processor and a display meter, the protective cover is rotatably arranged on the upper portion of the protective shell, the water pipe is arranged on the protective shell, the detection processor is installed in the protective shell, the fan blades are arranged on the detection processor, and the display meter is arranged on the protective shell. The fan blades rotate in the water pipe, a display meter is arranged at the top of the detection processor, the wireless transmission device is arranged in the protection shell and electrically connected with the detection processor, the interface is formed in the wireless transmission device, and the connecting wire is connected to the wireless transmission device. And data detected by the detection processor can be transmitted to remote monitoring equipment through the radio transmitter, so that automatic transmission of the data is realized, and manual field acquisition is not needed.

The utility model relates to the technical field of flow statistics, and provides a flow meter capable of automatically detecting the water flow direction, which comprises a shell, a magnetic rotor, a first Hall sensor, a second Hall sensor and an MCU (Microprogrammed Control Unit), the shell is provided with an inner cavity, the magnetic rotor is arranged in the inner cavity, and the magnetic rotor is provided with a plurality of magnetic curved-surface blades; the first Hall sensor and the second Hall sensor are arranged at intervals along the axis direction of the magnetic rotor, and the distance between the first Hall sensor and the second Hall sensor is smaller than the height of the magnetic rotor but not equal to one half of the height of the magnetic rotor. The beneficial effects or advantages of the technical scheme of the utility model are that the first Hall sensor and the second Hall sensor which are in unique position relation are arranged, the MCU calculates the time of the two Hall sensors for sensing the magnetic curved-surface blade, and whether the magnetic rotor rotates anticlockwise or clockwise is judged by comparing the time; therefore, whether the water flow direction is forward or reverse is automatically detected.

The invention provides a micro flow measurement method and device based on computer vision and electronic equipment, and relates to the technical field of flow measurement. The micro-flow measuring method based on computer vision comprises the following steps: acquiring a grayscale image of a mechanical float flowmeter through which a fluid to be tested flows by using an image acquisition device; wherein the size of the grayscale image is a preset size value, and the shooting angle of the grayscale image is a preset shooting angle; according to a preset size value, a preset shooting angle and the gray level image, scale line position information of a floater in the mechanical floater flowmeter is determined; and determining the current flow value of the to-be-tested fluid according to the scale line position information of the floater. According to the invention, the automatic measurement of the trace flow can be efficiently realized at low cost.

The invention relates to the technical field of water meter equipment, in particular to a metering mechanism of a horizontal helical vane type water meter, which comprises a flange cover, a bracket, an impeller, a rectifier, a central gear, a transmission gear set and a baffle plate, and a rotating shaft of the impeller is rotatably supported between the rectifier and the baffle plate. The first gear and the second gear are meshed with each other to form the first gear pair used for converting rotary motion of the impeller into rotary motion of the transmission gear shaft, the first gear pair can be effectively meshed under any working condition due to the fact that the first gear and the second gear are both involute cylindrical gears, and even if the impeller axially moves by 5 mm to the maximum, the first gear pair can be effectively meshed with the second gear pair. Due to the characteristics of the cylindrical gears, meshing of the cylindrical gears cannot be separated, only slight relative sliding in the tooth width direction exists, influences on transmission stability and efficiency are extremely small, the contact area of the cylindrical gears is far smaller than the sliding contact area between the worm gear and the worm, and friction resistance of the cylindrical gears can be remarkably reduced.

The invention provides a self-adaptive dual-mode flow metering device and method for a riverway ecological water replenishing recharge well, and relates to the technical field of hydrological monitoring. The device monitors the water level in the well in real time by arranging a second water level sensor, and a control unit intelligently judges whether the current recharge working condition is a water falling working condition or a full pipe flow working condition according to the water level information; further, a volume method or a flow velocity method is autonomously selected for flow measurement, and continuous, accurate and automatic monitoring of the flow under the full-working-condition operation condition of the recharge well is achieved; under the water drop working condition, the electric on-off valve is closed to accumulate water flow in the cylindrical measuring cylinder, and the average flow is calculated based on the water level in the cylinder measured by the first water level sensor; under the full pipe flow working condition, the valve is kept open, and the instantaneous flow is calculated based on the section average flow velocity measured by the Doppler flow meter; and due to automatic switching of the two modes, the reliability and adaptability of flow monitoring of the recharge well in a complex dynamic environment are remarkably improved.

The high-precision flowmeter comprises a rotor, a metering chamber, a mechanical counter and a scraper mechanism, a water inlet and a water outlet are formed in the two ends of the metering chamber respectively, the rotor is rotatably connected into the metering chamber, one end of the rotor penetrates through the side wall of the metering chamber to be connected with the mechanical counter, and the other end of the rotor is connected with the scraper mechanism. One end of each scraper mechanism is connected with the side wall of the rotor, the other end of each scraper mechanism abuts against the inner wall of the metering chamber, and the scraper mechanisms are annularly arrayed around the center line of the rotor at intervals. Due to the adoption of the technical scheme, when the high-precision flow meter is used for metering industrial water, the length of the scraper mechanism can be adjusted, so that the situation that the scraper mechanism is stuck under the influence of temperature difference is reduced to a certain extent, and normal use of the flow meter is ensured to a certain extent.

The present disclosure provides a method of controlling abeverage appliance to prepare a beverage. The method includes receiving a flow sensor signal indicative of an estimate of a flow rate delivered by a hydraulic system (160) of the beverage appliance (10), determining a power indicator indicative of power being consumed by a heater (170) during at least a portion of a preparation process, determining a volumetric indicator indicative of an estimate of volume of fluid delivered by the hydraulic system during the preparation based on the estimate of the flow rate and the power indicator, and controlling the hydraulic system according to the volumetric indicator. The beverage appliance includes a controller (100) with memory (120) and a processor (110) configured to perform the method.

The invention relates to the technical field of crude oil extraction, and discloses a wellhead crude oil output metering device and method.The wellhead crude oil output metering device comprises a separation mechanism, the separation mechanism further comprises an equipment base, the characteristic of high-pressure bubble removal is utilized, a pushing spring and a sealing sliding plate are arranged in equipment, and when the pressure borne by the pushing spring is larger, the sealing sliding plate can seal the pushing spring; when the liquid falls on the sealing sliding plate and the gas is accumulated on the inner wall of the precipitation barrel, the pressure of the precipitation barrel is increased and the sealing sliding plate moves downwards to force the pushing spring to accumulate mechanical power when the raw materials are continuously input into the equipment along with the raw material pipe; a high-pressure environment is formed in the precipitation barrel under the reaction generated by pushing the spring and the raw materials are continuously input into the raw material pipe, and bubbles generated by crude oil falling in the high-pressure environment are broken, so that the bubbles are prevented from floating on the surface of liquid and influencing the metering detection of the metering mechanism on the crude oil.

A coaxial connector (1) comprising a body (2) with an outer wall (3) and an inner wall (4) supported within an outer wall by a bridge portion (5) extending across an outer flow path W. The connector seals with coaxial pipes (P1-4) at inlet / outlet ends (7 / 8). An auxiliary port (31) extends through a side wall of the body across the bridge portion (5) without breaking into the outer flow path W and extending into an inner flow path B. A tubular tool (50) for preparing a coaxial pipe has first end has a stop face (53) for an outer pipe. The side wall has an opening with visible mark (56) to allow a line to be drawn on the inner pipe at a fixed distance from the end of the outer pipe.

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

The present application relates to the field of gas measurement, especially to a resolution-adjustable micro gas flowmeter, comprising a shell, a base fixedly arranged at the bottom of the shell, an air inlet pipe through-arranged on the base, a top cover arranged at the top of the shell, an air outlet pipe and a liquid inlet arranged on the top cover respectively, the air inlet pipe and the air outlet pipe being communicated with the inner cavity of the shell, a pivot rotatably installed in the shell, a counter connected to one end of the pivot, a plurality of partitions uniformly arranged on the circumferential outer wall of the pivot, and a side plate fixedly arranged between the two ends of adjacent two partitions, wherein the pivot is driven to rotate continuously by the rotating and reciprocating bubble trapping and releasing process realized by the gas collection cavity, the rotation process of the pivot is counted by the counter, the gas flow can be accurately detected, the gas collection amount required when the gas collection cavity floats can be realized by controlling the expansion and contraction degree of the air bag, and the resolution adjustment of the gas flow detection is realized.