375 results about "Electromagnetic flowmeter" patented technology

The invention discloses an AI-based raw water pretreatment dosing intelligent control system and method, and relates to the technical field of artificial intelligence, and the system comprises a sensor layer, an edge calculation layer, a cloud platform layer and an execution layer. The sensor layer consists of a distributed sensor network, comprises a turbidity meter, a pH electrode, an electromagnetic flowmeter, a COD (Chemical Oxygen Demand) online monitor and a distributed optical fiber temperature measuring device, covers a raw water inlet, a mixing tank and a sedimentation tank node, and transmits a signal to the edge calculation layer through an RS485 bus. According to the raw water pretreatment dosing intelligent control system and method provided by the invention, through multi-modal data fusion and a dynamic prediction model, the water quality of raw water is accurately sensed and predicted, the dosing amount is adjusted in advance, the hysteresis of a coagulation reaction is effectively compensated, the standard reaching rate of the water quality is improved, and by utilizing an NSGA-II multi-target optimization algorithm, the quality of the raw water is effectively improved. The medicament cost and the treatment effect are balanced, excessive dosing of medicaments in a traditional mode is avoided, and the operation cost is reduced.

The invention discloses a non-linear error correction method for an electromagnetic flowmeter based on machine learning. The non-linear error correction method comprises the steps that 1, original monitoring data, working condition parameters and a reference calibration flow value of the electromagnetic flowmeter are collected; 2, performing data preprocessing to obtain a standard feature vector sequence and an original error sequence; 3, performing cycle and trend error feature modeling on the standard feature vector sequence through an improved TimeMixer network; 4, taking the original error sequence as a supervision label, and calculating a joint loss function; 5, designing a double-stage error correction strategy to carry out trend correction and period correction, and generating a corrected flow value sequence; 6, executing physical consistency constraint on the corrected flow value sequence to generate a credible corrected flow value sequence; and step 7, updating the improved TimeMixer network and the credible correction flow value sequence. According to the invention, the measurement precision and the operation stability of the electromagnetic flowmeter under non-linear interference are improved.

The invention discloses a rolled piece temperature control system based on a steel rolling process, which relates to the technical field of steel rolling and comprises a detection module, a control module, an execution module and a cooling module, the detection module comprises infrared thermometer arrays, an ultrasonic thickness gauge, an electromagnetic flowmeter, a pressure transmitter and a thermal resistance thermometer, and the infrared thermometer arrays are used for being arranged in front of and behind a cooling section and respectively collecting initial temperatures before entering a cooling system. Through the self-adaptive PID algorithm, the finite difference heat conduction model and the Smith pre-estimation compensation strategy are combined, the problem of control delay caused by the large lag characteristic in the cooling process is solved, control parameters can be dynamically adjusted according to the rolling speed, the steel grade characteristic and the like, temperature adjustment better fits the actual working condition, and the control precision is improved. The phenomenon of supercooling or insufficient cooling in a traditional control mode is fundamentally avoided, and the uniformity and stability of the performance of rolled pieces are guaranteed.

The invention relates to the technical field of flow detection, and discloses a pipeline type electromagnetic flowmeter which comprises a mounting pipe body and an electromagnetic flowmeter main body mounted on the mounting pipe body, and further comprises a cylindrical cavity formed in the mounting pipe body, a rotating sleeve is rotationally connected in the cylindrical cavity, the rotating sleeve and the mounting pipe body are coaxially arranged, and the electromagnetic flowmeter main body is arranged in the cylindrical cavity. A rotating assembly for driving the rotating sleeve to rotate is arranged on the mounting pipe body; a partition plate is installed in the rotating sleeve, the partition plate divides the interior of the rotating sleeve into two filtering spaces with semicircular sections, a circular baffle is fixed to the end, close to the electromagnetic flowmeter body, of the rotating sleeve, and a semicircular baffle is fixed to the end, away from the electromagnetic flowmeter body, of the interior of the cylindrical cavity. Through the design of the two filter barrels, when one of the filter barrels is cleaned, shutdown is not needed, water flow filtration and water flow conveying are not affected, and backwashing can be carried out.

The invention relates to the technical field of gate valve control systems, and discloses a pilot gate valve intelligent control system for a hydraulic valve, which comprises a valve body, and the valve body comprises a main valve clack, a hydraulic cavity, a pilot valve assembly, an intelligent control unit, a multi-source sensor, a human-computer interaction interface and a cloud server. According to the pilot gate valve intelligent control system for the hydraulic valve, a valve operation digital mirror image is built through the multi-source sensor set, the pressure sensor captures the pressure difference of a main valve, a reference is provided for water hammer suppression and the like, the electromagnetic flowmeter conducts non-contact measurement and adapts to multiple media, abrasion errors are avoided, and the magnetostriction displacement sensor monitors valve clack micro-motion; the vibration sensor carries out early warning on hidden dangers such as sealing abrasion through three-axis data, the temperature sensor corrects interference of fluid characteristics on control, the five sensors work cooperatively, all-directional monitoring of fluid parameters and mechanical states is achieved, data are accurately input for intelligent control, and efficient and stable operation of the valve is guaranteed.

According to the high-frequency corrosion-resistant pipeline type electromagnetic flowmeter, a first installation area used for installing a high-frequency magnetic field generation assembly is formed between the inner wall of a conductive outer pipe and the outer wall of an insulating inner pipe, and the high-frequency magnetic field generation assembly is not attached to the conductive outer pipe and the insulating inner pipe; when the wear-resistant lining and the insulating inner pipe are damaged to cause seepage of a corrosive medium, the high-frequency magnetic field generation assembly can be prevented from being corroded by the seeping corrosive medium; an isolation shell is arranged in the second installation area, a groove is formed in the end, facing the measurement channel, of the isolation shell, a through hole is formed in the bottom wall of the groove, a ceramic membrane used for sealing the through hole is arranged in the groove, the surface, facing the measurement channel, of the ceramic membrane is flush with the inner wall of the corrosion-resistant lining, and inert conductive liquid is arranged in the isolation shell. The electrode assembly comprises two measuring electrodes which are correspondingly soaked in the isolation shell, and the ceramic membrane prevents a corrosive medium in the to-be-measured liquid from entering the isolation shell, so that the measuring electrodes are prevented from being corroded.

The utility model relates to an ultrahigh frequency resonance excitation low power consumption electromagnetic flowmeter and a special chip thereof, a sensor core is installed in a sensor core waterproof box, the sensor core waterproof box is installed at the middle position of a sensor core support, and the sensor core waterproof box divides a measuring pipeline in the sensor core support into two parts. Signal processing PCBs are installed on the front face and the back face of the sensor core support respectively, special chips are arranged in the two signal processing PCBs respectively, and the sensor core support is installed in a metal pipeline. According to the utility model, the purpose of reducing power consumption is realized by shortening the excitation time and forming resonance by using inductance and capacitance of the excitation coil; and the excitation coil and the measurement electrode are manufactured by adopting the multi-layer PCB, so that the manufacturing cost is greatly reduced.

The electromagnetic flowmeter comprises a shell and a sphere, connecting pipes are fixedly connected to the two ends of the surface of the shell, first connecting flanges are fixedly connected to the ends, away from each other, of the two connecting pipes, a fixing cylinder is fixedly connected to the center of the top of the shell, and a second connecting flange is fixedly connected to the top end of the fixing cylinder; the sphere is rotationally connected to the center in the shell, a communicating groove is horizontally formed in the shell in a penetrating mode, a rotating mechanism for rotating the sphere is arranged in the shell, and indicating mechanisms are arranged on the two symmetrical sides of the surface of the shell. Through the arrangement of the ball body, the magnetic field coil can be conveniently placed during use, meanwhile, the magnetic field coil can be conveniently protected, and in the use process, the ball body can be rotated to facilitate connection and disconnection of fluid in the shell, so that the use effect of the device is improved, and meanwhile, a rotating disc can be driven to rotate; the flow direction of the fluid of the device can be facilitated through the indicating arrow arranged on the surface of the turntable, and the mounting convenience of the device is improved.

The utility model provides an electromagnetic flowmeter sensor which comprises a flow guide pipe assembly, a flow guide pipe, a flow guide pipe, a flow guide pipe, a flow guide pipe and a flow guide pipe assembly, wherein the flow guide pipe assembly is internally provided with a flow guide cavity; the shell is arranged outside the flow guide pipe assembly in a sleeving manner; the two coils are arranged on the inner wall of the shell; the electrode penetrates through the wall surface of the flow guide pipe assembly, and one end of the electrode extends into the flow guide cavity and is used for being in contact with a to-be-detected medium; the converter connecting assembly is arranged on the shell; the coil is connected with the converter connecting assembly through the first lead; the electrode is connected with the converter connecting assembly through the second lead; and the two ends of the shell are respectively connected with one flange. The coil is installed on the shell, the weight borne by the flow guide pipe can be reduced, the wall thickness of the flow guide pipe is reduced, cost is reduced, the first lead and the second lead are connected with the converter through the converter connecting assembly, and reliable connection of the leads can be achieved.

The invention discloses an elastic city rainwater garden layout optimization method and system self-adaptive to climate change, and relates to the technical field of sponge city drainage optimization. Multi-dimensional data are collected in real time through an ultrasonic liquid level sensor, an electromagnetic flowmeter and a meteorological radar, a physical model is constructed, and a weighted flow value is generated in combination with LSTM; intelligent prediction under the constraint of the physical law is achieved, threshold matching and deviation correction are conducted based on the weighted flow value, and the pipe diameter adjusting amount is calculated; and constructing a three-color matrix execution feedback strategy containing prediction precision, drainage efficiency and equipment loss. The problems that a traditional scheme is poor in dynamic adaptability, single in model and free of closed-loop feedback are solved, and the elasticity of a drainage system to cope with climate changes is improved.

The utility model is applicable to the technical field of electromagnetic flow meters, and provides an electromagnetic flow meter beneficial to descaling, which comprises a measuring tube and a shell sleeved on the measuring tube, an electromagnetic measuring mechanism used for detecting the internal flow of the measuring tube is arranged on the shell, an accommodating groove is arranged on the inner wall of the measuring tube, and the accommodating groove is communicated with the measuring tube. The two sides of the containing groove extend out of the left side and the right side of the shell respectively, a built-in scraping plate matched with the containing groove is arranged in the containing groove, the built-in scraping plate and the containing groove are arranged to be in an isosceles triangle shape, and a control mechanism used for controlling the built-in scraping plate to slide in the measuring pipe is arranged on the measuring pipe. According to the device, the problem that a measuring circuit is disconnected due to the fact that scale attached to the surface of the electrode is insulated is avoided as much as possible, the measuring precision of the electromagnetic flowmeter during working is guaranteed, and meanwhile when the electromagnetic flowmeter is not used, the built-in scraper is contracted into the containing groove and does not affect flowing of liquid in the measuring pipe; and the fluid flow measurement accuracy of the electromagnetic flowmeter is ensured.

The utility model relates to a corrosion-resistant electromagnetic flowmeter. Two ends of the measuring pipeline are respectively provided with a left-end flange and a right-end flange, the measuring pipeline, the left-end flange and the right-end flange are made of engineering plastics and are of an integrated injection molding structure, and an upper measuring electrode and a lower measuring electrode which are longitudinally opposite are arranged in the middle of the top wall and the middle of the bottom wall of the measuring pipeline; the device further comprises a front shell and a rear shell which clamp the measuring pipeline in the middle, coil supports are arranged in the front shell and the rear shell, excitation coils are installed on the coil supports, and the two excitation coils are located in front of the middle of the measuring pipeline and behind the middle of the measuring pipeline respectively. A front half flange plate is arranged at the top of the front shell, a rear half flange plate is arranged at the top of the rear shell, the front half flange plate and the rear half flange plate form a top flange when the front shell and the rear shell are assembled in a butt joint mode, the gauge head is provided with a display screen in the front and a gauge head support at the bottom, and the bottom of the gauge head support is fixedly connected with the top flange. According to the corrosion-resistant electromagnetic flowmeter, the corrosion-resistant capacity is improved on the basis that the structural characteristics of the flowmeter body are guaranteed.

The embodiment of the present application provides a flow calculation method, device, electronic device and storage medium. The method includes: calculating the difference between the observed value and the predicted value of the electromagnetic flowmeter at the target moment as the residual corresponding to the target moment; calculating the degree of discreteness between the residual corresponding to the target moment and the residual corresponding to each same-window moment as the residual fluctuation corresponding to the target moment, wherein the same-window moment is other moments in the same time window as the target moment; taking the first weight as the weight of the observed value at the target moment and the second weight as the weight of the predicted value at the target moment, performing weighted summation on the observed value and the predicted value at the target moment to obtain the calculated value at the target moment, wherein the first weight is positively correlated with the residual fluctuation corresponding to the target moment, and the second weight is negatively correlated with the residual fluctuation corresponding to the target moment. Applying the embodiment of the present application can improve the accuracy of flow calculation.

The utility model relates to the technical field of pipeline flow metering equipment, in particular to a pipeline type electromagnetic flowmeter which comprises a measuring pipe, a lining arranged in the measuring pipe and a meter head arranged on the measuring pipe, two shells of semi-circular ring structures are arranged on the measuring pipe in a sleeved mode, and a first bolt is arranged between the two shells. The two shells are connected through a first bolt, limiting rings are arranged in the two shells, one sides of the limiting rings are installed on the inner walls of the shells, magnet exciting coils are arranged in the limiting rings in a sleeved mode, the two sides of the magnet exciting coils make contact with the shells and the measuring tube respectively, two electrodes are arranged between the two shells and located on the two sides of the shells respectively, and the two electrodes are arranged on the two sides of the shells respectively. The two sides of the two shells are each provided with a sleeve hole of a semicircular structure, the sleeve holes are located in the edges of the shells, and the electrodes are clamped in the sleeve holes. The utility model provides a pipeline type electromagnetic flowmeter which is convenient to maintain an assembled electrode and a magnet exciting coil, reduces interference on the magnet exciting coil, and is used for overcoming the defects in the prior art.

The invention relates to the technical field of oil field oil production engineering, in particular to an underground data acquisition unit with flow, pressure and temperature monitoring functions and a method. The method is suitable for underground working condition monitoring of submersible motor type lifting equipment such as submersible screw pumps, submersible plunger pumps and submersible centrifugal pumps. The unit comprises a pressure-resistant shell, wherein a central pipe, an electromagnetic flowmeter, two pressure and temperature sensors and an underground parameter collector are integrated in the pressure-resistant shell; the two sensors are used for measuring the temperature and pressure of liquid flow of the central pipe and the temperature and pressure of an oil casing annulus respectively; the electromagnetic flowmeter measures the flow, and real-time temperature and pressure data are used for compensation to improve the precision. The unit is further provided with a collecting pipe, an upper end, a lower end, a connecting sliding ring, an annulus / oil pipe inner testing channel, a sealing rubber ring and the like. Through the integrated design, synchronous high-precision in-situ monitoring of underground key parameters is achieved, the problem that underground data of multiple instruments are not synchronous is solved, and a reliable data terminal is provided for an intelligent oil field.

The invention provides a drilling fluid flow monitoring device and method suitable for a mud runway, relates to the field of petroleum drilling ground testing instruments, and solves the problem that an existing monitoring method is low in overflow prediction precision and cannot find overflow in time. The device comprises a flow measuring unit (1), and the left side and the right side of the flow measuring unit (1) are connected with a flow guide unit (2) and a flow blocking unit (4) through flange plates respectively. The upper part of the diversion unit (2) is connected with the video monitoring unit (3); the flow measuring unit (1) is an electromagnetic flowmeter and is used for measuring the outlet displacement; the flow guide unit (2) is used for guiding drilling fluid to flow to the flow meter; and the flow choking unit (4) is used for controlling stable flow of the drilling fluid. According to the drilling fluid flow monitoring device suitable for the mud runway, real-time accurate monitoring of the flow of a drilling fluid outlet can be achieved, then monitoring of overflow and leakage of the drilling fluid is achieved, and well control safety is ensured.

The utility model relates to electromagnetic flowmeter technical field, the utility model discloses a kind of electromagnetic flowmeter transmitter with temperature measurement, including through power supply circuit and signal isolation circuit connection control circuit and signal processing circuit, the signal processing circuit includes the wiring terminal J8 of realizing multiple wiring mode;Based on the selective connection temperature sensor of wiring terminal J8, temperature signal is connected to the input end of operational amplifier UT1A by analog switch U18 output, based on the input end of analog-digital converter U19 connected to the output end of operational amplifier UT1A;The control pin of analog-digital converter U19 is connected to control circuit, for controlling the collection and transmission of data, the utility model is through integrated multifunction and flexible measurement mode, high precision, high flexibility, low cost, high reliability and strong anti-interference ability are realized, the efficiency and performance of industrial measurement system are significantly improved.

The invention discloses an electromagnetic flowmeter flow prediction method based on magnetic sensor identification analysis, and relates to the technical field of electromagnetic flow measurement, and the method comprises the steps: collecting a magnetic field intensity signal in real time, modulating an excitation coil based on a high-frequency pulse to generate an alternating magnetic field, and outputting an original magnetic field signal matrix containing space-time information; the flow velocity field predicted value and the attention weight vector are jointly optimized through a gradient propagation algorithm to minimize the mean square error of the predicted flow velocity and the ultrasonic Doppler reference value, and a calibrated flow value is output; and calculating a real-time confidence score based on the calibrated flow value, and when the score is lower than a preset threshold, performing online fine tuning on the attention weight vector by using an elastic weight consolidation algorithm, and outputting an anti-interference flow prediction result. The differential Maxwell equation constraint is embedded, the flow velocity field and the material parameters are optimized in a combined mode, and dual verification of the measurement result of the electromagnetic flowmeter on the aspects of data precision and physical rules is achieved.

The invention discloses a water flow test method and system based on an electromagnetic flowmeter, and relates to the technical field of automatic control, and the method comprises the following steps: obtaining historical impedance data of an electrode, and carrying out data analysis to obtain electrode conductivity fluctuation data; analyzing the water quality of the to-be-detected area, establishing a water quality conductivity characteristic model, and correcting the conductivity fluctuation data of the electrode; acquiring electrode pollution characteristics, and dynamically predicting the water quality pollution level of the to-be-detected area in combination with the corrected electrode conductivity fluctuation data; according to a pollution level prediction result, obtaining the influence intensity of pollution on an electrode signal, and dynamically adjusting the excitation frequency and amplitude; through the method based on electrode conductivity fluctuation data correction, water quality pollution level dynamic prediction and excitation frequency and amplitude self-adaptive adjustment, the problem that in the prior art, the measurement precision of an electromagnetic flowmeter is reduced in a complex water quality environment is solved.

The invention discloses a protection device for working of an electromagnetic flowmeter, and relates to the technical field of metering auxiliary devices. The protection device for working of the electromagnetic flowmeter comprises the electromagnetic flowmeter, the electromagnetic flowmeter comprises a sensor pipe, the top of the sensor pipe is fixedly connected with a flow converter, the front face of the sensor pipe communicates with a top degassing mechanism, and the top degassing mechanism comprises an adapter pipe communicating with the front face of the sensor pipe; the top of the adapter pipe communicates with a top exhaust valve, and the left side and the right side of the adapter pipe are both fixedly connected with ultrasonic bubble removing assemblies. According to the protective device for working of the electromagnetic flow meter, by arranging the top degassing mechanism, the series flow cooling mechanism and the shielding supporting mechanism, while physical protection is achieved on the flow meter, bubbles in measured fluid are rapidly removed, the measurement precision of the electromagnetic flow meter in the fluid containing the gas is improved in an auxiliary mode, and the service life of the flow meter is prolonged.

This application discloses a grounding ring and an electromagnetic flowmeter. The grounding ring includes an insulating component with an annular structure and a first conductor component. The first conductor component is connected to the annular inner wall of the insulating component, and its side radially away from the insulating component along the annular structure contacts the fluid medium, serving to connect an external grounding line and the fluid medium. The electromagnetic flowmeter includes the grounding ring. This design achieves conductivity and corrosion resistance through the first conductor component, and utilizes the insulating component to provide structural support and insulation isolation. Compared to grounding rings in related technologies that use precious metals throughout, this design significantly reduces the amount of precious metals used while ensuring conductivity and corrosion resistance, thus lowering material procurement, manufacturing, and subsequent maintenance costs, achieving both functionality and economy.

The utility model relates to the field of flow metering instruments, in particular to a plug-in type electromagnetic flowmeter which comprises a meter head, a measuring tube arranged on the meter head, a measuring probe arranged at the bottom of the measuring tube, a ball valve sleeved on the measuring tube and a base sleeved on the ball valve. A nut is arranged at the end, away from the ball valve, of the sealing pipe and communicated with the sealing pipe, a threaded hole and a conical hole are sequentially formed in the end, close to the ball valve, of the sealing pipe in the direction away from the ball valve, the hole diameter of the conical hole is gradually decreased in the direction away from the ball valve, a first pressing ring is sleeved with the conical hole, and a gland is sleeved with the threaded hole in a threaded mode. A sleeve hole is formed in the middle of the gland, the measuring tube is sleeved with the sleeve hole, the first pressing ring is extruded in the conical hole through the gland and the nut, and the measuring tube is sleeved with the first pressing ring in an interference mode. The utility model provides the plug-in type electromagnetic flowmeter which improves the sealing effect of the measuring tube and reduces stress concentration.

The invention discloses an electromagnetic networking flow measurement system which solves the problems that an existing radar flow meter is prone to being interfered by wind power, an ultrasonic flow meter is complex to install and debug and prone to being influenced by water flow impurities, and a single ultrasonic flow meter is low in precision. The system comprises a radar water level gauge, an electromagnetic flowmeter host, a connecting cable, an electromagnetic flow velocity sensor, a vertical rod and a water storage structure, three electromagnetic flow velocity sensors are arranged in the water storage structure, a connecting cable is electrically connected with the sensors and a host, and a model algorithm is arranged in the host. Multiple electromagnetic sensor networking is combined with an electromagnetic fluid induction technology, a radar water level gauge and a host algorithm are matched, and flow velocity, water level and flow parameters can be accurately collected and output; the sensor is small in fluid-imitating appearance resistance, high in system waterproofness, convenient to disassemble and assemble, small in size and low in cost, a high-precision scheme is provided for flow measurement of medium and large channels, and the flow measurement efficiency and reliability are effectively improved.

When a plug-in type electromagnetic flowmeter body needs to be mounted at the upper end of an upper hoop, the plug-in type electromagnetic flowmeter body is inserted into the middle of a mounting table, and a positioning hole in a fixed disc is matched with a limiting rod to preliminarily limit the fixed disc, so that the plug-in type electromagnetic flowmeter body cannot rotate; then a rotating ring is reversely rotated by holding a grip with a hand, a first mounting seat pushes a connecting rod, and the connecting rod pushes a fixing block on one side of a second mounting seat, so that a positioning rod moves into a groove cavity of an annular groove, and finally, the positioning rod is clamped into the groove cavity of the annular groove, and locking of a fixing disc is completed; and when the positioning rod is inserted into the annular groove, the second mounting seat and the first magnetic block are magnetically attracted, so that the rotating ring is not easy to deviate due to vibration, and the mounting operation of the plug-in type electromagnetic flowmeter body is simpler and quicker.

The utility model discloses a novel intelligent electromagnetic flowmeter which comprises a connecting body, a rotating shaft is rotatably installed in the connecting body through a connecting mechanism, a turbine is fixedly installed on the outer wall of the rotating shaft, two installation sleeves are fixedly installed on the outer wall of the rotating shaft, and the outer walls of the two installation sleeves are fixedly connected with wiping plates through fixing mechanisms. An instrument is fixedly mounted on the outer wall of the connecting body, a mounting plate is fixedly mounted on the outer wall of the instrument, a protective cover is slidably mounted on the upper end face of the mounting plate through a connecting mechanism, and two buckles are fixedly mounted on the upper end face of the mounting plate. By arranging the turbine, the rotating shaft, the mounting sleeve, the wiping plate and other components, the turbine can drive the rotating shaft to rotate between the two connecting plates when rotating, and at the moment, the rotating shaft can drive the mounting sleeve to rotate, so that the mounting sleeve can drive the wiping plate to rotate in a manner of being attached to the inner wall of the connecting body through the fixing rod, and the interior of the connecting body can be cleaned conveniently; and impurity accumulation in the fluid is avoided.

The utility model relates to an electromagnetic flowmeter which comprises a measuring tube, a shell is arranged on the outer side of the measuring tube, a lining is arranged on the inner side of the measuring tube, connecting flanges are arranged at the two ends of the measuring tube respectively, a pressure measuring assembly and a flow speed collecting electrode are arranged on the measuring tube and the lining, and the pressure measuring assembly is located on the inner side of the shell. The pressure measuring assembly comprises a lining, a pressure tapping pipe arranged on the measuring pipe, a first pressure tapping hole formed in the lining on the outer side of an inner cavity of the pressure tapping pipe, and a connecting sleeve arranged at the end, away from the measuring pipe, of the pressure tapping pipe. The second pressure tapping hole is formed in the connecting sleeve on the outer side of the inner cavity of the pressure tapping pipe; the pressure sensor is arranged in the connecting sleeve at one end, far away from the pressure tapping pipe, of the second pressure tapping hole; and excitation coils are respectively arranged on the measuring tube above the flow velocity acquisition electrode and the measuring tube below the flow velocity acquisition electrode. The flow parameter of the conductive liquid medium can be fed back, and the pressure parameter can be stably fed back. The utility model has the advantages of convenient use and wide market prospect.

The present invention provides a partially filled electromagnetic flowmeter for measuring sewage flow, comprising a conduit, electrodes, and an electrode cleaning device, one for each electrode. The electrode cleaning device comprises a push rod movably mounted on the conduit, a telescopic drive mechanism for driving the cleaning end of the push rod toward or away from the electrode, and a rotary drive mechanism for driving the push rod to rotate and clean the electrode. The mud level detection device comprises a sensor probe disposed in a fluid flow area on the inner wall of the conduit. The sensor probes are evenly distributed along the circumference of the conduit and detect the conductivity of corresponding locations through each of the sensor probes. The mud level location is determined based on changes in the conductivity of each location. This solves the technical problem in the prior art of silt affecting electrode sewage flow measurement and silt level monitoring.

According to the detection device of the electromagnetic flowmeter and the detection method of the detection device, the method that programs are used for automatically calculating and configuring parameters is adopted, the parameters do not need to be modified manually, and the purposes of saving time and labor in detection and improving efficiency are achieved. The flow coefficient is automatically calculated through a program, parameters are set through the upper computer, convenience and rapidness are achieved, and errors are not prone to occurring. In addition, in the checking process, switching of checking flow points is automatically carried out in the upper computer, and if the target flow is not reached, automatic adjustment can also be carried out. The calculation and setting of the flow coefficient are also executed on the upper computer. After the inspection is finished, the upper computer automatically outputs a table of inspection results, and a conclusion whether the inspection results are qualified or not is given in the table. In this way, the manual participation process is greatly reduced, the operation is very convenient and rapid, and errors are not prone to occurring.

The invention discloses an electromagnetic flow meter, which relates to the technical field of flow meters, and comprises a test tube, a coil I, a coil II, a coil I, a coil II, a coil I and a coil II, the two electrode assemblies are symmetrically arranged on the test tube, and the two electrode assemblies are perpendicular to the coil I and the coil II; the lining assembly is arranged in the test tube in a sleeving manner; the lining assembly is provided with the first lining and the second lining, rapid replacement is achieved in a detachable connection mode, and the maintenance efficiency is effectively improved; abrasion visualization is achieved through an indicating rod and scales, a transparent protective cover and a humidity sensor are matched, displacement of the second lining can be visually judged through manual inspection, and damage and leakage of the lining assembly can be warned through sudden humidity rise; automatic abrasion judgment of the lining assembly is achieved through three-level early warning of the pressure sensor, an output signal can be directly connected to an industrial control system, early warning is achieved in advance, and sudden shutdown is avoided.

The invention relates to the field of flow metering, in particular to a mine electromagnetic flowmeter which comprises a shell, a lining and an electrode, the lining is arranged in the shell, the electrode is rotatably mounted in the lining, a water storage cavity is formed in the shell, a water spraying opening communicated with the water storage cavity is formed in the lining, the water spraying opening faces the electrode, and the water spraying opening is communicated with the water storage cavity. And the water storage cavity is connected with an energy storage device. The electrode is driven to rotate by flowing water flow in a pipeline, so that multiple sides of the electrode can be flushed by the water flow, energy and water are stored by water pressure, stored energy is released when the water flow stops, and water is drained and stored through the released energy to flush dirt remaining on the electrode, so that the scaling speed of the electrode is slowed down, and the cleaning frequency of the electrode is reduced; the problems that the electrode scaling speed of the mine electromagnetic flowmeter is high, the electrode cleaning period is frequent, electrode abrasion is accelerated, the electrode corrosion rate is increased, and the service life of the mine electromagnetic flowmeter and the electrode measurement accuracy are affected are solved.