162 results about "Flow transducer" patented technology

The invention relates to a flow sensor comprising:—a housing (100), wherein the housing (100) has an inlet channel (110) for receiving the fluid measuring medium, an outlet channel (120) for discharging the fluid measuring medium, a measuring channel (130) extending between the inlet channel (110) and outlet channel (120) and at least one secondary channel (140) extending between the inlet channel (110) and the outlet channel (120), and more particularly connected in parallel to the measuring channel (130);-a sensor element (200) arranged in the measuring channel (130) for sensing a physical measurement variable with regard to a flow of the fluid measuring medium; and -a first more particularly 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 in relation to a first fluid transfer (150) or a second fluid transfer (160) into at least one first position (P1) and a second position (P2), wherein the first closure element (300), in the second position (P2), closes the first fluid transfer (150) or the fluid transfer (160), and wherein the first fluid transfer (150) or the second fluid transfer (160) is not closed in the first position (P1) of the first closure element (300), as well as a system that contains the flow sensor according to the invention.

A monitoring apparatus for monitoring fluid flow into or out of a patient comprises a fluid flow sensor and an output means. The fluid flow sensor is configured to attach to a fluid line fluidly connected to the patient and measure fluid volume data comprising data proportional to the volume of fluid which has passed through the fluid line over a time period. The monitoring apparatus is configured to determine, using the fluid volume data, a volume of fluid which has passed through the fluid line over the time period. The output means is configured to provide an output based on the volume of fluid and the time period.

The application provides an integrated streamlined hydrogen filling gun capable of real-time monitoring and flow regulation and a control method, relates to the field of high-pressure hydrogen filling of a hydrogen storage system of a hydrogen fuel cell vehicle, and comprises a main valve body, a stop valve, a first filter, a redundant one-way valve, a flow regulating valve, a second filter, a temperature sensor, a pressure sensor and a flow sensor. The temperature sensor is used for monitoring the temperature T in the valve body in real time. When T < T1, the pressure sensor is started to monitor the real-time pressure. When T1 <= T < T2, cooling is started until T < T1. When the real-time pressure P < P1, the flow sensor is started to monitor the pre-filling flow. When the pre-filling flow Q is in a first flow threshold range, hydrogen is filled at a first flow. When P1 <= P < P2, hydrogen is filled at a second flow. When P2 <= P < P3, hydrogen is filled at a third flow. When P = P3, the stop valve is closed to stop hydrogen filling. The hydrogen filling gun adopts a streamlined valve body, has high integration, can adapt to filling requirements of multiple pressure grades, and is safe and efficient.

The utility model provides a kind of excavator hydraulic system and excavator, it is related to excavator manufacturing technical field;Among them, the excavator hydraulic system, comprising: hydraulic line;Communication pipeline, one end of the communication pipeline is communicated with the hydraulic line, and the other end is communicated with hydraulic oil collecting device;Flow sensor is arranged on the communication pipeline, for detecting the flow signal of the hydraulic oil that is discharged on the hydraulic line via the communication pipeline;Control unit, with the flow sensor electric connection, the control unit obtains the flow signal of the flow sensor, obtains exhaust detection result according to the flow signal;Display unit, with the control unit electric connection, the display unit obtains the exhaust detection result from the control unit, and displays the exhaust detection result.The utility model's scheme can improve the working efficiency of hydraulic system exhaust.

A method and system for controlling the intake gas pressure of a ventilator, and a computer program product. The method comprises: acquiring a flow signal collected by a gas path flow sensor (101) and generating a collected flow function (S201); on the basis of the collected flow function, performing time domain signal reconstruction to generate a reconstructed signal (S203); on the basis of the reconstructed signal and a pressure signal collected by a pressure sensor (105), obtaining an estimated patient end pressure signal (S205); and on the basis of the estimated patient end pressure signal serving as a feedback signal for intake gas pressure closed-loop regulation, controlling the rotation speed of a fan (103) (S207). The collected flow signal undergoes time domain signal reconstruction to obtain the real-time flow reconstructed signal, so as to implement phase compensation of the collected signal, thereby implementing pressure control having a good tracking effect, and reducing device development costs.

This invention proposes a device for intelligent regulation of urban water volume and pressure, relating to the field of intelligent management of urban water supply. It includes a water pump, valves, and a filter. The input end of the water pump is fixedly connected to a first pipe, and a detection component is provided on the inner wall of the first pipe. The output end of the water pump is fixedly connected to a second pipe, and the valve is located on the outer surface of the second pipe. This invention uses a first pressure sensor, a first flow sensor, and a water quality sensor in the detection component to detect the pressure, flow rate, and water quality of the water flowing within the device. This facilitates the collection of data on water pressure, volume, and quality, enabling subsequent intelligent regulation of the water supply. By regulating the water supply through the water pump and valve, and in conjunction with the collection of water pressure and volume data, intelligent regulation of water volume and pressure is achieved. The filter removes smaller impurities from the regulated water, thereby improving water quality.

A system includes a flow sensor contained within a flow sensor housing, a base, and a seal. The base houses a controller that generates at least one operation modification signal, and the flow sensor is separable from and mountable onto the base. A bottom surface of the flow sensor housing includes the seal. The seal forms a liquid-tight engagement between the flow sensor housing and the base when the flow sensor is mounted onto the base.

The technology described herein can identify usage information for a sensor. In one example, an anesthesia device can include a processor to obtain usage information from a first flow sensor coupled to the anesthesia device. The processor can also determine that the usage information exceeds a predetermined limit and generate an alert indicating that the first flow sensor is to be replaced.

The invention relates to a high-sensitivity MEMS flow sensor and a manufacturing method thereof.The high-sensitivity MEMS flow sensor comprises a sensor chip, a metal base and a measuring runner, the sensor chip comprises a substrate, and a porous silicon area is formed in the substrate; the first dielectric layer is formed on the substrate and the upper surface of the porous silicon region; the heating resistor array is formed on the upper surface of the first dielectric layer and is positioned right above the porous silicon region; the thermopile array is formed on the upper surface of the first dielectric layer and located over the porous silicon area, and the thermopile array and the heating resistor array are alternately arranged in the direction of the gas flow channel; the electric isolation layer covers the heating resistor array and the thermopile array; the metal interconnection structure is formed on the upper surface of the electric isolation layer and is connected with the thermopile array; the electrode is connected with the metal interconnection structure; and the second dielectric layer covers the electrical isolation layer and the metal interconnection structure. A multi-pair symmetrical distribution structure in which the thermopiles and the heaters are alternately arranged is adopted, so that the measurement sensitivity of the flowmeter is remarkably improved.

A flow rate sensor that can be integrated with a component of a fluid system includes a housing having fluid ports attached to the component and an internal cavity having a spindle and a rotor comprised of a plurality of paddles attached to a hub rotatably mounted on the spindle. The paddles rotate the hub around the spindle when a fluid is introduced into the cavity from a fluid port. A magnetic element attached to the hub rotates along with the rotor. A magnetic switch located in a sealed compartment is in magnetic alignment with the magnetic field produced by the magnetic element. Rotation of the magnetic element causes the magnetic switch to generate electrical signals corresponding to the rate of fluid flowing into the sensor from the component.

A Mass Flow Sensor (MFS) is provided and includes an MFS housing, a mounting structure, having a mounting structure top and a mounting structure bottom, wherein the MFS housing is associated with the mounting structure top, a first sensor leg, wherein the first sensor leg extends away from the mounting structure bottom and includes a first temperature measurement device and a heating element. The MFS further includes a second sensor leg, wherein the second sensor leg extends away from the mounting structure and includes a second temperature measurement device and an airfoil structure, wherein the airfoil structure defines an airfoil cavity and is associated with the mounting structure bottom to contain the first sensor leg and the second sensor leg.

This utility model discloses a blood collection tube aspiration volume detection device, which includes an upper water tank, a water outlet component installed at the bottom of the upper water tank, an air inlet component installed on the upper water tank, a lower water tank located below the upper water tank, a lower water tank bracket installed on the outer wall of the lower water tank, a water outlet valve installed on the outer wall of the lower water tank, a liquid outlet pipe connected to the water outlet valve, a flow sensor installed on the liquid outlet pipe, a drain needle connected to the flow sensor, and a blood collection tube sleeved on the drain needle. The upper water tank includes a water container and an upper cover installed on top of the water container. The water container is installed on the lower water tank bracket. The water outlet component is located inside the lower water tank. Without air pressure, the water in the water container cannot flow out, and the water level returns to the level before the blood collection tube aspiration, thereby ensuring the consistency of the water level in each detection and thus guaranteeing the accuracy of each detection.

The application belongs to the technical field of raw material feeding, and particularly relates to a plastic raw material feeding device. In view of the problem that the existing control device needs to be equipped with a quantitative controller and a flow sensor on each pipeline, resulting in high cost of the whole device, the following scheme is proposed. The device comprises a storage tank, a feeding inlet is formed in the upper surface of the storage tank, and an adjusting mechanism for adjusting the pipeline is arranged on one side of the storage tank. The step motor drives the driving wheel to rotate, and then drives the belt to drive the driven wheel to rotate. Under the cooperation of the transmission rod, the mounting disc rotates, and the other connecting head on the mounting disc is aligned with the connecting pipe. Since each conveying pipe can be connected with different equipment through a hose, different connecting heads can realize the centralized feeding function for different equipment, and only one quantitative electromagnetic valve is needed to realize quantitative operation, thereby improving the practicability.

The present disclosure provides an inflation system for inflating inflatable objects, such as aircraft tires. The inflation system includes a flow sensor arranged to sense a flow rate of pressurized air supplied to an inflatable object by way of a supply path. The inflation system also includes a computing system. The computing system is configured to inflate, using feedback from the flow sensor, the inflatable object with a learned volume of pressurized air specific to the inflatable object.

This invention discloses an integrated anti-clogging and cooling device and control method for gas turbine intake systems, belonging to the technical field of gas turbine intake systems. The device includes a filter frame body, a zoned spray assembly within it, a water-carrying-in prevention guide assembly on the outlet side, and an intelligent control assembly. The zoned spray assembly sets differentiated nozzle densities according to the intake flow distribution. The water-carrying-in prevention guide assembly includes a guide plate, a cyclone separator diffuser, corrugated plates, and a water collection tank. The intelligent control assembly includes temperature, differential pressure, humidity, load, and flow sensors. The controller selectively executes a cooling-only mode, a cooling + anti-clogging mode, or a shutdown protection mode based on the comparison between the intake air temperature and the filter differential pressure, and links the existing backflushing system and drain valve. The method also includes adaptively adjusting the spray parameters according to the rate of decrease in differential pressure. This invention achieves integrated filtration, cooling, and anti-clogging, effectively preventing water carryover and low-temperature icing, improving the operating efficiency and safety of the gas turbine.

This application relates to a method and system for fault monitoring of thermal flow sensors based on multi-source data fusion. The method includes: dividing historical operating status data at various time points into multiple data subsets according to a preset time window; updating a first graph object based on the features of each graph node and the correlation strength of edge features corresponding to the data subsets to construct a time-series subgraph corresponding to multiple fault category labels and training a first defect detection model; dividing current operating status data into a time-series subgraph to be detected corresponding to multiple data subsets to be detected according to a preset time window; inputting the time-series subgraph to be detected into the first defect detection model to determine the preliminary fault detection result of the thermal flow sensor to be detected; and correcting the first fault category based on domain knowledge graph and text feature data to determine a second fault category and its corresponding natural language description. This application can accurately identify complex faults caused by multi-parameter collaboration.

This invention provides an intelligent pressure regulating valve for a marine LNG supply system, relating to the field of marine propulsion system technology. The intelligent pressure regulating valve includes a valve body assembly, a sensor assembly, and an embedded control unit. The valve body assembly includes an actuator, a valve body, a valve seat, a valve core, and a valve stem. The valve body has an inlet flow channel and an outlet flow channel, with sensor interfaces located on the walls of both channels. The actuator, through valve stem transmission, changes the relative position of the valve core and valve seat, controlling the valve core opening. The sensor assembly includes an inlet pressure sensor, an outlet pressure sensor, a temperature sensor, and a flow sensor, monitoring the inlet pressure, outlet pressure, inlet temperature, and outlet flow rate, respectively. This invention directly integrates the sensors onto the valve body, eliminating the risk of pipeline breakage and leakage due to ship vibration, ensuring convenient and universal sensor maintenance, and achieving real-time valve control and fault diagnosis based on the built-in control and monitoring system.

The utility model relates to petroleum exploitation technical field especially is a kind of automatic swabbing liquid metering detection device, including main part, the side surface fixedly connected with control assembly of main part, the top of control assembly is provided with flow control subassembly;The utility model discloses through the cooperation of flow sensor and liquid level sensor, the accurate measurement and real-time monitoring of swabbing liquid flow can be realized, while the measurement accuracy is high, is not influenced by swabbing liquid viscosity and impurity content, adaptability is strong, liquid level sensor is connected with controller, when liquid level height reaches the upper limit or lower limit set, controller will send corresponding control signal, realizes automatic start-stop measurement process, prevents swabbing liquid overflow or inaccurate measurement occurs, using advanced control algorithm of controller, can automatically adjust the opening of valve plate and start-stop of measurement process according to real-time monitoring data, realizes the automation and intelligentization of entire measurement process, greatly improves work efficiency.

This invention relates to the field of circulating fluidized bed boiler technology, specifically to a low-resistance structure and control method for a boiler primary air duct. It is applied to the air duct between the air preheater outlet and the circulating fluidized bed boiler. The air duct consists of an upper air duct and a lower air duct connected together. A flow sensor is installed inside the upper air duct. Both the upper and lower air ducts include rectangular bends. Inside each rectangular bend, at least one fixed arc-shaped guide plate and multiple movable arc-shaped deflector plates are installed. One end of each arc-shaped guide plate is connected to a rotating shaft. A drive mechanism is installed outside the air duct, and a fine-tuning device is installed at the end of the rotating shaft. Based on the pressure and flow rate obtained from the flow sensor within the air duct, the target spacing of the arc-shaped guide plates is determined. A control command is generated and sent to the drive mechanism to adjust the arc-shaped guide plates to the target spacing. The fine-tuning device then performs small-amplitude reciprocating adjustments to the arc-shaped guide plates, maintaining optimal fluidization and minimal air duct resistance, thus avoiding energy loss due to excessive flow.

A method for monitoring ventilation leaks in a medical ventilation device and the medical ventilation device itself are disclosed. The medical ventilation device is configured with a unique intentional leak pressure-flow correspondence to correspond to various types of interface accessories that can be worn on the breathing area of ​​the ventilated individual. The method includes: acquiring a flow signal collected by a flow sensor of the medical ventilation device and determining the total leakage based on the flow signal; acquiring a pressure signal collected by a pressure sensor of the medical ventilation device; invoking the unique intentional leak pressure-flow correspondence and determining the intentional leakage of the interface accessory based on the pressure signal and the pressure-flow correspondence; and determining the unintentional leakage of the interface accessory based on the difference between the total leakage and the intentional leakage. This application achieves automatic monitoring of unintentional leaks without requiring the user to select an applicable pressure-flow correspondence.

The utility model discloses a kind of gas active safety defense devices, it is related to gas safety equipment technical field, including shell, one side in the shell is equipped with air inlet pipe, another side in the shell is equipped with air outlet pipe, one end of the air inlet pipe and the air outlet pipe respectively with gas pipeline air inlet pipe and gas pipeline air outlet pipe intercommunication after penetrating out the shell, another end of the air inlet pipe and the air outlet pipe is communicated with gas meter after penetrating out the shell;Valve is installed on the air inlet pipe, valve front pressure sensor and valve rear pressure sensor are respectively installed on the air inlet pipe located the two sides of valve before and after;Flow sensor is installed on the air outlet pipe.The utility model gas active safety defense device can detect the data of gas pipeline in real time, can determine that gas pipeline under pressure, overpressure, gas over flow, leakage, earthquake and other abnormalities in time, and actively cut off gas pipeline, greatly improve the security of gas use.

An automatic inhalation system which includes a gas supply system which includes a high pressure system and a medium pressure system, a breathing loop; wherein gas enters the breathing loop from the gas supply system; and wherein the breathing loop further comprises an inhale limb and an exhale limb each comprising at least one flow sensor, at least one CO2 sensor, and at least one O2 sensor. The system further includes a controller, wherein the gas supply system and breathing loop are in digital communication with the controller via an I2C bus and a set of analog inputs; and a touchscreen, wherein the touchscreen displays the diagnostic information on a UI accessed through a password-protected user management system; wherein the system is used to administer gas treatments to patients based on a preset protocol that may be started by either an operator or administrator and edited only by an administrator.

The present disclosure provides an inflation system (100) for inflating an inflatable object, such as an aircraft tire (104). The inflation system (100) includes a flow sensor (118) arranged to sense a flow of pressurized air supplied to the inflatable object through a supply path (112). The inflation system (100) also includes a computing system (130). The computing system (130) is configured to use feedback from the flow sensor (118) to inflate the inflatable object with an acquired volume (148) of pressurized air specific to the inflatable object.

A system and method for in ground heat exchange, including at least one first array and one second array, each first and second array comprising a plurality of capped pipes; at least one temperature sensor; and at least one flow rate sensor, a plurality of flow rate valves connected to each first array and second array, the flow rate valves configured to facilitate flow of a liquid through the system; at least one pump attached to the flow rate valves for modulating the flow rate of the system; and a heat pump, wherein the system is configured to provide heating and cooling to a building.

This utility model relates to the field of conformal coating production technology and discloses an additive dispensing device for conformal coating production. The device includes a mixing tank with three supporting legs arranged circumferentially at the bottom. A first motor is mounted on the top of the mixing tank. This additive dispensing device uses a control device to control a second motor to drive a winding device in forward and reverse rotation. The winding device winds or releases a pull rope, which in turn causes a baffle to slide inside the feed cylinder, thereby controlling the amount of additive dispensed. Simultaneously, a flow sensor monitors the additive flow rate in real time and feeds the data back to the control device. The control device controls the second motor according to a preset dispensing amount, achieving precise dispensing, significantly reducing manual operation, improving the performance stability of the conformal coating, and reducing batch-to-batch product performance differences.

This invention relates to the field of heat pump technology and provides an adsorption heat pump system, including a first adsorption bed, a second adsorption bed, a condenser, an evaporator, and an intelligent controller. The first and second adsorption beds are connected in parallel between the condenser and the evaporator. Temperature sensors and flow sensors are installed on both the first and second adsorption beds. A first valve group is installed on the pipeline between the first and second adsorption beds and the condenser and evaporator. The intelligent controller is electrically connected to each sensor and the first valve group. The intelligent controller determines the desorption or adsorption completion status of the two adsorption beds based on the detection results of each sensor, ensuring that one bed is always in a desorption state and the other in an adsorption state, providing a continuous and stable heat source for subsequent steam preparation or heating. Simultaneously, by deeply coupling the adsorption heat pump system with a steam booster system, continuous high-temperature steam preparation is achieved, improving the system's steam supply temperature and pressure levels.

The utility model discloses a split type flow sensor, including flow sensor probe, flow sensor probe passes through high temperature cable connection signal acquisition amplifier module, be provided with a plurality of cable interfaces on the signal acquisition amplifier module, be provided with quick detach assembly on flow sensor probe, quick detach assembly installs on the detection flange, the utility model relates to flow sensor technical field, the flow sensor of this split type design, will sensitive probe and electronic module separate, and the probe is connected with the detection flange of the closed valve through quick detach assembly, supports high -risk environment fast safe dismounting, high temperature FEP cable remote transmission signal makes electronic module far away from the severe working condition, guarantees precision and life, cable protection component alleviates stress, significantly reduces maintenance cost and risk, improves system adaptability and reliability.

The utility model discloses a filling device for ink manufacturing belongs to filling device technical field. The utility model discloses an electric push rod, fixed frame, storage tank subassembly and stirring subassembly: electric push rod is four, and the rectangular distribution is in the fixed frame bottom end, is used for the synchronous regulation storage tank height to adapt to different specifications container, and the storage tank subassembly contains storage tank, the discharge pipe, is equipped with flow sensor and solenoid valve on the discharge pipe, can real -time monitoring flow and realizes quantitative filling, and the stirring subassembly is fixedly connected with the storage tank top screw thread groove through the apron, and its motor drive paddle rotation scraping wall stirring, and the air pump cooperation air pressure sensor maintains the stable pressure in the jar, ensures that the ink is mixed and stable discharge even. Through electric push rod height adjustment, stirring subassembly anti -precipitation design, flow and air pressure double precision control, solved the traditional filling device stirring not enough, and the problem of poor adaptability of container and unstable air pressure, has high self -adaptation, mixes evenly, and maintenance is convenient.