258 results about "Electromagnetic flowmeter" patented technology

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.

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 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 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 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.

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 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.

The invention relates to the technical field of electromagnetic flow meters, in particular to an online calibration method and system for an electromagnetic flow meter and the electromagnetic flow meter. The online calibration method analyzes an error source of baseline drift on the basis of the basic principle of the electromagnetic flow meter, establishes an error estimation function, and determines the error estimation function when the flow is stable. Various coefficients of an error estimation function are adjusted by continuously using newly obtained baseline offset, excitation coil resistance and electrode liquid connection resistance, so that the error estimation function can track the state change of the electromagnetic flowmeter, online calibration is carried out on the electromagnetic flowmeter by utilizing each flow stabilization period, and the error estimation precision is continuously improved. After an estimation error is calculated through the error estimation function optimized through the steps, the measured induced electromotive force can be corrected, baseline drift is eliminated, and therefore on the premise that the normal measurement process of the electromagnetic flowmeter is not interrupted, key parameters such as baseline offset can be calibrated through a gap with stable flow.

The utility model relates to the technical field of fluid mechanics measurement, and discloses an electromagnetic flowmeter which comprises a bent pipe, an octagonal lining is fixedly connected to the interior of the bent pipe, reserved holes are formed in the left side and the right side of the interior of the octagonal lining, and a shell is fixedly connected to the outer wall of the front side of the bent pipe. Flat-top electrodes are fixedly connected to the left side and the right side of the interior of the shell, the adjacent ends of the two flat-top electrodes penetrate through the left side and the right side of the bent pipe and are slidably connected with the interiors of the corresponding reserved holes, a plurality of coils are fixedly connected to the inner wall of the shell at equal intervals, and a connecting pipe is fixedly connected to the top of the shell; the top of the connecting pipe is fixedly connected with a converter. According to the electromagnetic flowmeter, the flow velocity fluctuation is reduced by the conductive fluid flowing through the elbow and the octagonal lining, the flat-top electrode is in contact with the fluid through the preformed hole, and the flow field fluctuation near the electrode is reduced, so that the measurement precision of the electromagnetic flowmeter is remarkably improved, and the measurement error is effectively reduced.

The application provides a electromagnetic flowmeter flow test tool calibration device, which comprises a first component and a second component, a quick release mechanism for quick assembly and disassembly of the first component and the second component, a multi-diameter connecting part arranged on one end of the second component connected with a to-be-tested electromagnetic flowmeter for realizing connection of the multi-diameter to-be-tested electromagnetic flowmeter, and a connecting mechanism arranged on the second component for quick connection of the to-be-tested electromagnetic flowmeters with different diameters and the multi-diameter connecting part. According to the application, different specifications of to-be-tested electromagnetic flowmeters can be replaced on a test pipeline, the first component is preassembled on the test pipeline and the second component is preassembled on the to-be-tested flowmeter through quick assembly and disassembly, and the quick release mechanism is used for connection, so that the cumbersome disassembly and assembly of traditional flange bolts are avoided; when the flowmeter is replaced, the pipeline connection can be completed by only operating the quick release mechanism, the replacement time is greatly shortened, and batch and efficient calibration of multi-diameter flowmeters is realized.

The application relates to the technical field of measuring instrument detection, and discloses an empty pipe detection method and system of an electromagnetic flowmeter and an electromagnetic flowmeter. The method comprises the following steps: applying an excitation signal to a signal electrode within a preset time period; wherein the preset time period is the front section of each half excitation period of the excitation signal; acquiring a to-be-sampled signal within the preset time period, and calculating an empty pipe detection voltage between the signal electrode and a grounding electrode according to the to-be-sampled signal; calculating the conductivity of a pipe medium according to a first preset value, a second preset value and the empty pipe detection voltage; and detecting whether the electromagnetic flowmeter is in an empty pipe state according to the conductivity. The embodiment of the application can reduce the influence of common-mode signals on empty pipe detection, and further improves the empty pipe detection accuracy of the electromagnetic flowmeter.

The invention discloses a clinical specimen self-adaptive liquid taking device, and relates to the technical field of medical auxiliary equipment, and the clinical specimen self-adaptive liquid taking device comprises a mobile operation table, a volume measurement module, a processing module, a liquid taking metering module and a man-machine interaction module. According to the device, through deep fusion of the volume measurement module and the temperature compensation unit, the precision limitation of traditional manual estimation of the sample volume is broken through, the liquid and tissue density can be dynamically corrected according to the environment temperature, and accurate measurement of the sample volume is achieved; the processing module automatically calculates the amount of the stationary liquid meeting the industry specification based on the accurate volume data, and through real-time feedback and closed-loop control of an electromagnetic flowmeter of the liquid taking and metering module, it is ensured that the amount of the stationary liquid meets the requirement for complete immersion of the specimen, excessive waste is avoided, and the cost is reduced. Autolysis and deterioration of specimen tissues caused by insufficient stationary liquid are effectively prevented, a high-quality specimen basis is provided for pathological diagnosis, and the accuracy of diagnosis results is guaranteed.

The application provides a water plugging device and method for realizing visual analysis under different flow rate conditions, which comprises a plastic pipe frame, a plastic cylinder sleeve supported on the top of the plastic pipe frame through a steel pipe elbow and a steel cylinder guard frame, the plastic cylinder sleeve is connected with an air pressure tank through a rubber conduit hole and a rubber pipe, the air pressure tank is provided with a grouting opening and is used for storing special magnetic slurry, the plastic cylinder sleeve is connected with a power supply through a valve, a direct current intelligent electromagnetic flowmeter and a rubber pipe, one end of the plastic cylinder sleeve is connected with a water tank through a self-made steel frame mold and a water pipe, the other end of the plastic cylinder sleeve is provided with a magnetic self-aggregation magnetic bar, and the magnetic self-aggregation magnetic bar is connected with a pressure test pump through a rubber pipe. The water plugging device can be used for simulating the water plugging example under the water gushing condition of a real karst area tunnel, can effectively control the water gushing disaster, and avoids serious economic loss and heavy casualties.

The invention discloses a double-excitation double-electrode electromagnetic flowmeter for high-frequency pulsating fluid measurement. The double-excitation double-electrode electromagnetic flowmeter comprises a pipe body structure and a control circuit. The pipe body structure comprises a lining and a guide pipe; the inner side face of the guide pipe is covered with a lining. A first group and a second group of electrodes are arranged in the conduit; a first group and a second group of coils are arranged at corresponding positions of the first group and the second group of electrodes in the inner cavity of the catheter; first and second magnetic field shielding covers sleeve the circumferential outer side of the conduit; the first and second groups of coils are respectively positioned inside the first and second magnetic field shielding covers; an annular grounding electrode is arranged between the first group of electrodes and the second group of electrodes; the annular grounding electrode is connected to the conduit through the grounding fastening electrode; the control circuit comprises a CPU module; the CPU module generates complementary periodic excitation waveforms to excite the coil, controls acquisition of electrode signals and is used for calculating flow data of fluid in the conduit. According to the invention, high-fidelity and continuous measurement of the flow of the high-frequency pulsating fluid can be realized, and the measurement precision is ensured.

This invention discloses a top-sealed water flow rate testing device for a water-cooled magnet coil, comprising a container assembly and a water-blocking assembly. The water-blocking assembly, used to block the coil under test, is disposed inside the container assembly, dividing the interior of the container assembly into a high-pressure water zone and a low-pressure water zone. The container assembly is provided with an inlet and an outlet, the inlet communicating with the high-pressure water zone and the outlet communicating with the low-pressure water zone. The water-blocking assembly includes a sealing cap and a sealing ring. The sealing cap is disposed on top of the central through-hole of the coil under test, and the outer side of the sealing ring is sealed to the inner wall of the container assembly, while the inner side is sealed to the coil under test. The advantage of this invention is that, through the setting of the water-blocking assembly, the inlet is connected to an external cooling water supply system. The flow rate entering the high-pressure water zone from the inlet can be measured by measuring the water flow rate entering the inlet using an electromagnetic flow meter, thereby realizing the testing of the water flow rate of a single coil under test.

The utility model relates to a novel material lining structure of an electromagnetic flow instrument, and belongs to the technical field of novel material lining structures of electromagnetic flow instruments. Comprising an electromagnetic meter main body, a meter head fixed on the top surface of the electromagnetic meter main body, a lining pipe fixed on the inner wall of the electromagnetic meter main body, a protective layer fixed on the inner circumferential wall of the lining pipe, and a supporting mechanism arranged in the lining pipe, the supporting mechanism comprises an annular bin slidably connected to the interior of the lining pipe, a plurality of supporting plates arranged on the peripheral wall of the annular bin, and guide rods fixed to the sides, facing the annular bin, of the supporting plates and slidably connected with the annular bin. The connecting plates are fixed to the sides, away from the supporting plates, of the guide rods; and the driving assembly is arranged in the annular bin and used for controlling the multiple supporting plates to move. According to the novel material lining structure of the electromagnetic flow meter, the protective layer has better residual chlorine resistance, and meanwhile, the inner wall of the protective layer is smooth, so that the scaling problem caused by long-term use can be prevented.

The application discloses a low-power excitation system and method of an electromagnetic water meter and an electromagnetic flowmeter, which applies pre-excitation technology, and first applies a fast narrow pulse signal to a coil and a magnetic core for primary excitation, so as to prepare for reducing the coercive force of a magnetic field in secondary excitation; then, a wide pulse is applied for secondary excitation. The combined excitation mode can shorten the overall excitation time and reduce the influence of differential interference caused by rapid change of the magnetic field. In the method, the application also abandons the traditional constant-current and constant-voltage excitation technology, and instead fully utilizes the flow signal sensed by the coil and the magnetic core in the charging and discharging process, so that the excitation time of the wide pulse is significantly shortened, the overall operation power consumption is reduced, and the measurement accuracy problem caused by the change of the power supply voltage is overcome by combining the excitation power supply voltage compensation technology.

The application provides a mud level detection device for a non-full pipe electromagnetic flowmeter, which comprises a conduit for fluid flow, a sensing belt and a circuit board assembly arranged on the outer wall of the conduit; the sensing belt is arranged on the fluid flow area of the inner wall of the conduit, and the sensing belt comprises a plurality of sensing probes which are uniformly distributed along the circumference of the conduit. The mud level detection device can detect the electric conductivity of different positions through the sensing probes. Since the electric conductivity of different media is different, when each pair of adjacent probes is in the same medium, the electric conductivity values are relatively close, when two adjacent probes are in different media, the relative electric conductivity values change greatly, and when the two adjacent probes are in another medium, the difference between the electric conductivity values continues to expand. By comparing these electric conductivity signals, the corresponding pair of sensing probes when the electric conductivity changes can be found, and the position of the pair of sensing probes represents the demarcation point of the mud and water, so that the accurate detection of the mud level is realized.

1. Name of the product in this design: Converter (integrated right angle). 2. Application of this design: This design is used for electromagnetic flow meters. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

According to the acid-base tank area feed port valve group, the feed tank and the corrosion-resistant pump are connected through the pipeline, during working, the first valve, the second valve and the third valve are manually opened, and when acid or alkali in the feed tank passes through the corrosion-resistant pump and is discharged to the acid-base tank, the final outlet end of the valve group needs to be higher than the acid-base tank; the turning position of the bent pipe is arranged at the position higher than the position where the acid-base tank needs to be unloaded, the electric ball valve comprises a wireless connection module and a control module, the electromagnetic flowmeter is fixedly installed on the support, acid or base flows through the electromagnetic flowmeter, and the flow of the flowing-out acid or base can be set through the electromagnetic flowmeter. After the set flow is reached, a wireless signal is sent to the electric ball valve to close the electric ball valve, the electric ball valve can also be actively closed and opened through an external controller, the end, fixedly connected with the electromagnetic flowmeter, of the discharging tee joint is the first end, the second end of the discharging tee joint is horizontally arranged, and the second end of the discharging tee joint discharges materials to the acid-base tank when working.