139 results about "Electromagnetic flow" patented technology

An electromagnetic flow control method for reducing inclusions in a small-size cast billet. During continuous casting of the small-size cast billet, an electromagnetic stirring device having a Z-direction electromagnetic force is provided at a mold (3) and is capable of controlling the flow of molten steel in the mold, and carrying out Z-direction acceleration on a peripheral region of the molten steel while promoting circumferential rotational stirring of the molten steel in the mold. The method can reduce the impingement depth of the molten steel from a submerged entry nozzle in the mold, thereby having positive effects on promoting the flotation of the inclusions and improving the quality of the cast billet.

The application discloses a pipe jacking construction grouting control method and belongs to the technical field of pipe jacking construction. The purpose is to provide accurate control for the grouting technology in pipe jacking construction. According to the density of stratum, the grouting amount is monitored and controlled in real time through flow meter monitoring and electric switch control. Meanwhile, the grouting holes are arranged along the ring direction on different grouting sections in the pipe jacking direction, so that the grouting can penetrate the whole section, and the wrapping of grouting on the whole pipe jacking section is improved. A plurality of uniformly distributed grouting holes are arranged on the pipe wall of the prefabricated pipe section along the ring direction. A one-way valve is arranged at the outer end of the grouting hole, and a joint for connecting a grouting branch pipe is arranged at the inner end of the grouting hole. A total electromagnetic flow meter, a total electromagnetic pressure gauge and a total electromagnetic ball valve are connected to the grouting main pipe. A branch pipe electromagnetic flow meter, a branch pipe electromagnetic pressure gauge and a branch pipe electromagnetic ball valve are respectively connected to each grouting branch pipe. A plurality of vibration exciters and vibration sensors are fixed on the inner wall of the prefabricated pipe section along the ring direction.

In the system, an electromagnetic simulation module establishes a transformer three-dimensional electromagnetic field model based on a finite element method, and calculates magnetic field distribution, winding eddy current loss and iron core hysteresis loss to obtain loss data; the fluid-solid coupling calculation module is connected with the electromagnetic simulation module so as to simulate a transformer oil flowing and heat conduction process based on computational fluid dynamics; the optimization design module is connected with the fluid-solid coupling calculation module so as to perform parametric modeling and optimization on the winding structure, the cooling channel and the cooling fin layout through the hot spot position and temperature distribution based on a multi-target genetic algorithm and an agent model; the state evaluation and heat dissipation adjustment module is connected with the data interaction layer so as to analyze the health state of the transformer based on sensor data and simulation results, predict the hot-spot temperature trend and dynamically adjust operation parameters of the cooling system through a self-adaptive heat dissipation adjustment algorithm.

The invention discloses an automatic mixing control device for natural rubber latex and acid liquor. The device is provided with a latex pool (1) and an acid liquor pool (2), a latex pipeline (3) is connected below the latex pool (1), an electromagnetic valve (4) is arranged on the latex pipeline (3), and an electromagnetic flowmeter (6) is arranged at the rear part of the electromagnetic valve (4). An acid liquor pipeline (10) is connected below the acid liquor pool (2), an electric control valve (11) is arranged on the acid liquor pipeline (10), and a turbine flowmeter (13) is arranged at the rear end of the electric control valve (11). The tail ends of the latex pipeline (3) and the acid liquor pipeline (10) are provided with a glue-acid mixing pool (16), a glue-acid mixing pipeline (17) is arranged behind the glue-acid mixing pool pipeline (16), and the tail end of the glue-acid mixing pipeline (17) is provided with a PH value measuring probe (19) and a PH value measuring instrument (18). The device has the beneficial effects that the automation of the latex solidification acid preparation process is realized, the labor cost is reduced, the production efficiency is improved, and the stability of the product quality is ensured.

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 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.

The application discloses a kind of by temperature field and airflow field in situ adaptive control component shape laser additive manufacturing system and method thereof.Laser additive manufacturing system includes sealed protective cavity, total control unit, temperature field monitoring-control unit and airflow field monitoring-control unit.Temperature field monitoring-control unit includes infrared thermometer, thermocouple temperature measuring element and induction heating coil;Airflow field monitoring-control unit includes protective gas pipeline, electromagnetic flow regulating valve, oxygen content monitor and vacuum air filter.Total control unit includes temperature field control module and airflow field control module.Total control unit carries out in situ adaptive control to the temperature field of laser additive manufacturing by temperature field control module, improves the distribution of temperature field in the whole process of additive manufacturing, reduces the molten pool temperature gradient in the process of laser additive manufacturing, improves forming defect, and improves material performance.

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 sodium silicate production filtering equipment and a method thereof, and belongs to the technical field of filter press equipment and control methods thereof, the sodium silicate production filtering equipment comprises a main body frame, the main body frame comprises two parallel bearing steel beams, and two ends of the bearing steel beams are respectively connected with a head baffle and a tail baffle; the filter plate group is arranged between the two bearing steel beams and can slide along the bearing steel beams; the hydraulic pressing part is mounted on the tail baffle and is used for pushing a pressing plate to apply pressure to the filter plate group; the feeding pipeline is connected to the feeding port of the head baffle, and a feeding pump, an electromagnetic flowmeter and an inlet pressure sensor are sequentially arranged on the feeding pipeline; the pump power monitoring unit is installed on a power supply cable of the feeding pump and used for collecting the working current of a motor, and invalid intervention operation is avoided through an accurate decision-making mechanism.

A flow control valve for assembly with an actuator (22). The flow control valve includes a valve body (30) having one or more inlets (42, 44) to receive pressure and a passageway (46) having a length that spans between a first opening (50) and a second opening (52). A sealing member (32) assembled with the passageway and includes an outlet (74) to receive pressure. The sealing member includes a plunger opening for a plunger that assembles with a movable component (80) of the actuator such that the plunger is movable between an open position and a closed position. A biasing member (36) assembled with the sealing member and the movable component of the actuator. In the closed position the biasing member biases the plunger against the sealing member and pressure through the one or more inlets pushes against the movable component to further move the plunger against the sealing member to seal the plunger opening in the closed position.

The utility model relates to the technical field of electromagnetic flow meters, and discloses an assembly type electromagnetic flow meter which comprises an electromagnetic flow meter body, pipelines are installed at the two ends of the electromagnetic flow meter body, connecting assemblies are arranged at the joints of the electromagnetic flow meter body and the pipelines, and each connecting assembly comprises a first connecting ring connected to the surface of the corresponding pipeline in a sealed and rotating mode. Second connecting rings are fixedly connected to the two ends of the electromagnetic flowmeter, clamping blocks are fixedly connected to the surfaces of the ends, close to the electromagnetic flowmeter, of the first connecting rings, clamping grooves are formed in the surfaces of the second connecting rings, limiting grooves are formed in the second connecting rings, and limiting plates are arranged in the second connecting rings. According to the electromagnetic flowmeter, flange connection is replaced through the arrangement of the connecting assembly, the situation that a large number of screws need to be screwed is avoided, the electromagnetic flowmeter and the pipeline can be rapidly connected, and when the electromagnetic flowmeter needs to be disassembled, the electromagnetic flowmeter can also be rapidly disassembled.

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 invention relates to the technical field of geological disaster measurement, in particular to measurement marking equipment for geological disaster survey operation, which comprises an outer box, a drilling mechanism is arranged on the right side of the outer box, and the drilling mechanism comprises a drill rod, a base plate and a first hydraulic cylinder; a storage rack is further arranged in the movable cavity and can move back and forth in a reciprocating mode. The inclinometer pipe is further provided with a plurality of detection holes distributed from top to bottom, and sensors of different types can be movably connected into the detection holes so as to complete monitoring operation of different environmental parameters. A liquid storage cavity is further formed in the outer box and located on the left side of the second hydraulic cylinder, a liquid pump is arranged in the liquid storage cavity, the bottom end of the liquid storage cavity is further connected with a grouting pipe through a liquid conveying pipe, one end of the liquid conveying pipe is connected with the liquid pump, and an electromagnetic flow control valve is further arranged on the grouting pipe. According to the invention, the accuracy and the installation stability of the measurement marking operation of the inclinometer pipe are improved, and meanwhile, the upgrading conversion from the traditional physical measurement marking to the intelligent-integrated-multi-source fusion measurement environment information acquisition station of the geological disaster investigation operation is also 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.

The invention provides a dynamic cooling structure and a dynamic cooling method of a triazole continuous crystallizer, and relates to the technical field of triazole crystallization, the dynamic cooling structure comprises a cooling jacket, the cooling jacket comprises an inner attaching layer, a middle cooling liquid cavity and an outer heat preservation layer, the middle cooling liquid cavity is provided with a spiral plate, and the inner attaching layer is in contact with the crystallizer; a plurality of first thermometers are axially arranged in the crystallizer, the middle-layer cooling liquid cavity is connected with a water inlet pipe and a water outlet pipe in a penetrating mode, an electromagnetic flow valve is arranged on the water inlet pipe, a controller is arranged on the crystallizer, and the controller is electrically connected with the first thermometers and the electromagnetic flow valve. The inner attaching layer is tightly attached to the crystallizer, so that the heat conduction path is shortened; a spiral plate in the middle-layer cooling liquid cavity can guide cooling water to form ordered turbulent flow, so that the temperature dead angle of a traditional cooling cavity is reduced, and the heat exchange area and the heat exchange efficiency are greatly increased; the temperature field in the crystallizer is uniformly distributed, and the overall service life of the crystallizer is prolonged.

The invention discloses a device and a method for synchronously testing high-temperature stability and drainage performance of a porous asphalt pavement. The device is mainly composed of a load simulation system, a drainage system and a temperature control system. The load simulation system applies controllable intermittent repeated load to the test piece through a pressurizing mechanism and a load sensor, and a dynamic creep test is carried out to evaluate the high-temperature stability of the pavement. The drainage system comprises a vertical spray head which is annularly arranged, two water seepage pipes, an annular semi-closed glass wall, an electromagnetic flow sensor and a high-precision scale drainage collection container, and is used for carrying out a variable water head water seepage test through simultaneous load simulation, and evaluating the drainage performance by detecting the seepage flow of a test piece within a set time. The temperature control system is used for accurately controlling the test environment temperature. According to the invention, synchronous testing of high-temperature stability and drainage performance is realized, testing time and labor cost are significantly reduced, interaction of two performances under actual working conditions is simulated, and the testing result has higher engineering guidance value.

The utility model provides an electromagnetic flowmeter convenient to operate. The electromagnetic flow meter convenient to operate comprises an electromagnetic flow meter body; the two flange plates are fixedly connected to the two ends of the electromagnetic flowmeter respectively, mounting holes are formed in one ends of the two flange plates, a first bayonet is formed in one end of one flange plate, a limiting ring is mounted in the first bayonet, a first conical filter cone is fixedly connected to one end of the limiting ring, and a second conical filter cone is fixedly connected to the other end of the limiting ring. The tip end of the first conical filter cone is fixedly connected with a blow-off pipe, the other end of the blow-off pipe is fixedly connected with a sewage storage pipe, and the other end of the sewage storage pipe is fixedly connected with an external threaded pipe. According to the electromagnetic flowmeter convenient to operate, impurities are prevented from being in direct contact with the inner wall of the electromagnetic flowmeter through the design, the impurity attachment period is shortened, meanwhile, the filtered impurities are convenient for workers to clean, and the operation difficulty in the impurity cleaning process of the electromagnetic flowmeter is reduced.

The invention discloses a watering cart spraying flow control method with the optimal moisture content of earth and stone as the target. The method comprises the steps that initial parameters of filling earth and stone are determined; the water spraying device is connected with water spraying vehicle equipment, the water spraying vehicle equipment comprises a water spraying vehicle and a strip-type spray head which is communicated with a water outlet of the water spraying vehicle and used for continuous strip-type water spraying, and an electromagnetic flow valve is arranged on a pipeline between the water outlet of the water spraying vehicle and the strip-type spray head. And constructing a water sprinkling quantity-vehicle speed-water content coupling model, and optimizing the sprinkling flow according to the initial parameters, the paving indexes, the driving speed of the sprinkling vehicle and the effective sprinkling width. According to the invention, by establishing the quantitative coupling relation model among the sprinkling amount, the vehicle speed and the water content and comprehensively considering the initial water content, the optimal water content, the paving thickness, the sprinkling parameters and other factors of the soil and stone materials, automatic calculation and optimization of the sprinkling flow of the sprinkling vehicle are realized, the randomness of judgment depending on manual experience in the past is avoided, and the accuracy and the reliability of the sprinkling flow are improved. And the watering operation is converted from experience driving to data driving.

The present application relates to the technical field of smelting furnace, and provides a melting and preserving integrated furnace for non-ferrous metal recycling, which is characterized by comprising a furnace body, an electromagnetic rolling stirring device and an electromagnetic propeller, the furnace body has a feeding cavity, a cold chamber and a hot chamber which are sequentially communicated, a spoiler wall is arranged between the feeding cavity and the cold chamber, the lower part of the spoiler wall is provided with a liquid passage, the electromagnetic rolling stirring device is arranged at the lower part outside the feeding cavity, the electromagnetic rolling stirring device is configured to drive part of the molten liquid in the feeding cavity to enter the cold chamber through the liquid passage, and drive part of the molten liquid in the feeding cavity to impact the spoiler wall and roll downward, so as to stir the raw materials by means of the solution, and the electromagnetic propeller is arranged on the outer bottom wall of the furnace body. The melting and preserving integrated furnace provided by the present application realizes the circulation of the molten liquid in the furnace cavity of the smelting furnace through the cooperation of the electromagnetic rolling stirring device and the electromagnetic propeller, and solves the technical problem that the existing technology adopts the graphite rotor to circulate the cold and hot molten liquid, which is easy to mix impurities.

The invention discloses a control method of a forklift for lowering a yacht. The forklift comprises a forklift body, an executing mechanism with a plurality of lifting oil cylinders, a fork arm and an oil outlet channel. The executing mechanism drives the fork arm to move up and down through the lifting oil cylinders. The lifting oil cylinder discharges oil to the oil outlet channel, so that the fork arm moves downwards; speed limiting valves and electromagnetic flow meters are arranged at the respective connecting ends of the lifting oil cylinders and the oil outlet channel; the electromagnetic flowmeter monitors the flow of the speed limiting valve in real time; the speed limiting valves are arranged in parallel and are uniformly controlled by a control unit; and by arranging the speed limiting valve, the oil discharging flow is effectively limited, the situation that an oil outlet channel is damaged and impacts the yacht is avoided, and the operation safety is remarkably improved.

The utility model relates to the field of electromagnetic flow meters, and provides a modular electromagnetic flow meter connecting device which comprises a first unit module and a second unit module, and the first unit module is connected with a circuit board in an inserted mode; the second unit module is connected with the first unit module in an inserted mode, and a lead is fixed to the second unit module. The utility model has the effect of improving the convenience of operations such as connection, disconnection and exchange of the lead and the unit module.

1. Name of this product design: Flow meter converter housing. 2. Application of this design: This design is used for the metal housing of converters for flow meters such as electromagnetic flow meters and mass flow meters. 3. The key design features of this product are its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the technical field of flow meters, in particular to an electromagnetic flow meter which comprises a sensor and a converter, the sensor comprises a measuring guide pipe and a lining embedded in the inner wall of the measuring guide pipe, and the two ends of the measuring guide pipe are respectively provided with a flange plate. The two ends of the lining extend to the end faces of the two flange plates along the inner wall of the measuring guide pipe, a flow channel is further formed in the lining, the measuring guide pipe comprises an upper pipe body and a lower pipe body which are symmetrical along the axis of the flow channel, and the upper pipe body and the lower pipe body are buckled to form a mounting channel allowing the lining to be embedded therein. The upper pipe body and the lower pipe body are buckled, the upper pipe body and the lower pipe body are detachably connected through at least two sets of connecting assemblies, and the two sets of connecting assemblies are arranged at the buckling positions of the two sides of the upper pipe body and the two sides of the lower pipe body respectively. And the lining is arranged between the upper pipe body and the lower pipe body, so that the lining is convenient to disassemble and independently replace, and the maintenance cost is greatly reduced.

The utility model discloses an electromagnetic flowmeter without a straight pipe section, which comprises an electromagnetic flowmeter main body, the left end and the right end of the electromagnetic flowmeter main body are respectively provided with a first flange plate and a second flange plate, and the right side surface of the first flange plate and the left side surface of the second flange plate are respectively and fixedly connected with a sealing sleeve. According to the device, through cooperation of the locking rod and the locking cap, the sealing sleeve can tightly clamp the two ends of the electromagnetic flow meter body, the stability of connection between the electromagnetic flow meter body and the sealing sleeve is ensured, sealing of the electromagnetic flow meter body is effectively achieved through cooperation of a second arc-shaped groove and a sealing ring and a first arc-shaped groove, and the sealing effect of the electromagnetic flow meter body is improved. The electromagnetic flowmeter has the advantages that fluid leakage is prevented, the electromagnetic flowmeter body can be accurately positioned through cooperation of the positioning ring, the clamping groove and the rubber pad, the fluid leakage phenomenon can be effectively prevented, the adjustment frequency in the installation or maintenance process is reduced, and the working efficiency and the installation precision are remarkably improved.

The utility model discloses an adjustable metering detection device, and relates to the technical field of water flow metering detection devices. The adjustable metering detection device comprises an electromagnetic flow meter body, a displayer is arranged on the electromagnetic flow meter body, flange plates are arranged at the two ends of the electromagnetic flow meter body, the electromagnetic flow meter body is provided with a connecting block, and a telescopic base is arranged at the bottom of the connecting block. An adjusting assembly is arranged between the connecting block and the telescopic base and used for adjusting the telescopic length of the telescopic base. According to the adjustable metering detection device, the adjusting assembly is adopted and matched with the connecting block and the telescopic base, the height of the electromagnetic flow meter is conveniently adjusted, the electromagnetic flow meter is lifted to the same height as a to-be-connected pipeline by rotating a handle in the adjusting assembly, threaded holes between flange plates are automatically aligned when the electromagnetic flow meter reaches the same height, and the flange plates are connected through bolts; and the pipeline and the electromagnetic flowmeter can be connected in a labor-saving manner, so that the construction cost is reduced.

The utility model discloses automatic packaging equipment for high-calcium powder production in the related technical field of packaging equipment, which comprises a main frame and an upper support arranged above the main frame, a storage charging barrel is fixedly arranged above the upper support, an electromagnetic flow valve is mounted on a discharge pipe at the lower end of the storage charging barrel, and the electromagnetic flow valve is connected with the main frame. And a placing seat is arranged in the middle of the upper part of the main rack. The packaging equipment is provided with the suction cup type opening supporting device, the metering and discharging device and the thermoplastic sealing device, automatic metering, bagging and sealing operation of high-calcium powder can be achieved, the automation degree is high, the pressure sensor is arranged in the containing base, the metered weight can be rechecked, it is ensured that the packaging weight of the high-calcium powder meets the standard, and the packaging efficiency is improved. The opening supporting device adsorbs and opens the outer side of the packaging bag through an air pump and a suction cup, feeding cannot be interfered in the opening process, practicability is high, the thermoplastic sealing device is of a height-adjustable structure, and the sealing effect of the packaging bag can be guaranteed.

The application provides a continuous reforming uniform mixing feed experiment system and method of a coiled tube heat exchanger, wherein: a first distribution orifice plate, a second distribution orifice plate and an outlet tube plate are sequentially and horizontally detachably arranged from an inlet end to an outlet end of a mixing cavity, a center tube extends upward from the bottom of the mixing cavity to between the second distribution orifice plate and the outlet tube plate and is vertically detachably arranged; a nozzle section between the second distribution orifice plate and the outlet tube plate on the center tube is detachably provided with a spray head; a gas flow meter and a blower are arranged on a gas pipeline connected to the bottom of the mixing cavity; a water pump and an electromagnetic flow meter are arranged on a water pipeline connected between a water storage tank and the bottom of the mixing cavity; the outlet end of the mixing cavity is provided with a tapered outlet that is contracted, and the tapered outlet is connected to the water storage tank through an outer pipeline to form a circulating pipeline. The round hole spray head is replaced by a nozzle spray head, the atomization capacity of the liquid phase is improved, and the gas-liquid mixing effect of the gas-liquid mixing device in the downcomer tank is improved.

This invention relates to the field of hydrogeological exploration technology and discloses a method for accurately predicting aquifer inflow by integrating conventional and electromagnetic flow logging. The method includes the following steps: Step 1: Well logging data acquisition. Electromagnetic flow logging and conventional logging are performed simultaneously in the target exploration borehole to obtain static and dynamic flow response amplitude curves, apparent resistivity curves, natural gamma curves, and sonic transit time data. This method for accurately predicting aquifer inflow by integrating conventional and electromagnetic flow logging data constructs a key parameter system covering four dimensions: "water storage space - recharge power - water storage capacity - permeability resistance." It also utilizes the powerful nonlinear fitting capability of a generalized regression neural network (GRNN) to establish a prediction model, effectively overcoming the shortcomings of traditional theoretical formulas in adapting to complex geological conditions.

The application relates to the technical field of magnetic sensors, and discloses a non-contact downhole high-temperature electromagnetic flowmeter and a resonant excitation magnetic closed-loop control method, which comprises the following steps: a ground processing unit is connected with a downhole measurement assembly through a data cable, the downhole measurement assembly comprises a control measurement nipple and a sensor nipple; the control measurement nipple comprises a resonant excitation magnetic circuit; the sensor nipple comprises an excitation coil and signal electrodes, the excitation coil is connected with the resonant excitation magnetic circuit; the signal electrodes are connected with the control measurement nipple; the signal electrodes transmit the collected induced voltage signals to the control measurement nipple, the signals are processed by the control measurement nipple, and then the processed signals are transmitted to the ground processing unit to calculate electromagnetic flow; wherein the resonant excitation magnetic circuit is used for generating a control signal to drive the excitation coil to generate an alternating magnetic field, monitoring the current phase error of the excitation coil, and dynamically adjusting the current phase error so that the circuit is in a resonant state. The application overcomes the problem of large zero drift of the traditional high-frequency excitation technology, and improves the precision and service life of the electromagnetic flowmeter.