260 results about "Electromagnetic flow" patented technology

The invention belongs to the technical field of flowmeter verification, and discloses a two-phase flow analysis system and method based on a differential pressure flowmeter and an electromagnetic flowmeter. The method comprises the steps that a differential pressure flow meter and an electromagnetic flow meter are arranged on adjacent sections of a pipeline, the electromagnetic flow meter collects voltage signals and analyzes the voltage signals to obtain liquid phase volume flow, and liquid phase mass flow is obtained by combining temperature correction; the differential pressure flowmeter calculates the gas density by using an ideal gas law according to the temperature and the pressure; inputting multi-sensor time sequence data into the weight optimization model, and optimizing the volume gas content and the total mass flow rate; baseline parameters are calibrated during full-pipe single-phase flow to obtain zero drift, and real-time temperature and pressure dynamic correction are combined, so that the metering precision and the working condition adaptability are improved; the problem of verification deviation of a traditional flowmeter is solved, high precision and high reliability of complex gas-liquid two-phase flow metering are achieved, and efficient and reliable technical support is provided for two-phase flow precise metering and process control in the fields of chemical engineering, energy and the like.

The invention relates to the technical field of electromagnetic flowmeter grinding, in particular to a grinding device for electromagnetic flowmeter machining. The device comprises a machine tool base, a grinding mechanism is arranged on the upper side of the machine tool base, a plurality of grinding belts are arranged on the grinding mechanism, a moving device is arranged on one side of the grinding mechanism, the moving device moves on the upper side of the machine tool base, and an electromagnetic flowmeter tube is arranged on the moving device. In the process that the grinding mechanism is inserted into the electromagnetic flow meter tube, the end grinding piece drives the grinding belt to enter the electromagnetic flow meter tube, so that the inner wall of the electromagnetic flow meter tube is ground at the position, with few meshes, on the grinding belt, and large particles on the inner wall of the electromagnetic flow meter tube are ground away; and meanwhile, in the process that the grinding mechanism grinds the electromagnetic flowmeter pipe, the spirally arranged end grinding piece guides chippings ground by the grinding belt in the direction away from the grinding mechanism, and the chippings are rapidly discharged from the interior of the electromagnetic flowmeter pipe.

The embodiment of the invention provides a signal processing method and device and electronic equipment. In the embodiment of the invention, when the original voltage information collected by the electromagnetic flow monitoring equipment is obtained, the bias voltage correction is carried out on each piece of original voltage information to eliminate the voltage bias interference, and the peak interference elimination is carried out by identifying the abnormal sampling point with the peak noise. Voltage information under different sampling points is filtered to eliminate noise interference information except voltage information matched with output signal characteristics of the electromagnetic flow monitoring equipment, and on the basis, voltage information corresponding to a target sampling point in a set range and a standard voltage signal are subjected to cross-correlation, so that the output signal characteristics of the electromagnetic flow monitoring equipment are improved. The effective voltage information is extracted to be used for fluid characteristic measurement of the measured object, so that a large amount of noise interference in the collected original voltage information is effectively inhibited, and the accuracy of a measurement result output by the electromagnetic flow monitoring equipment, namely the fluid characteristics, is improved.

The invention discloses a high-overload distribution transformer design method based on geometric dimension reduction and multi-objective optimization, and the method comprises the steps: simplifying the three-dimensional structure of a transformer based on the axial symmetry characteristics of the transformer, building a two-dimensional axial symmetry model, and reserving the key geometric characteristics of an iron core, a winding and transformer oil; based on the two-dimensional axisymmetric model, constructing an electromagnetic-flow-heat multi-physics field coupling simulation model, calculating electromagnetic field distribution, and simulating oil flow and temperature field distribution in the transformer; based on the finite element simulation data and an improved four-vector multi-objective optimization algorithm, establishing a multi-objective optimization model, carrying out collaborative optimization on transformer structure parameters, and outputting a Pareto optimal solution set; and determining an optimal design scheme of the electromagnetic structure of the transformer according to the Pareto optimal solution set. Through the improved four-vector multi-objective optimization algorithm, the local development and global exploration capabilities are comprehensively improved, and the accuracy and diversity of the optimization scheme are improved.

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.

According to the slab continuous casting water gap electromagnetic flow control device and method, static magnetic fields are arranged on the outer side of a slab continuous casting submersed water gap above a molten steel meniscus in a slab continuous casting crystallizer, and the arrangement modes of the static magnetic fields include the single magnetic field mode and the double magnetic field mode; in the single magnetic field form, a static magnetic field is perpendicular to the center line of the submersed nozzle, namely the static magnetic field is perpendicular to the gravity action direction; the static magnetic field is generated by at least two magnetic field generators which are arranged on the two sides of the submersed nozzle and distributed in an axial symmetry mode. The magnetic field generator is of an annular structure and surrounds the submersed nozzle and the magnetic field generator by a circle; the static magnetic field is perpendicular to the center line of the submersed nozzle, namely the static magnetic field is perpendicular to the gravity action direction; the static magnetic field is generated by at least two magnetic field generators which are arranged on the two sides of the submersed nozzle and distributed in an axial symmetry mode. The static magnetic field forms a closed loop after passing through the two C-shaped magnet yokes, and the C-shaped magnet yokes are symmetrically arranged along the submersed nozzle axis. And the C-shaped magnet yoke is made of a magnetic conductive material.

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 invention discloses a switch cabinet condensation mechanism analysis method based on a multi-physical coupling field and a fractal theory, and the method comprises the steps: building a three-dimensional simulation model of a switch cabinet based on a solidworks environment; based on electromagnetic-flow-heat-wet coupling field simulation, judging parts easy to damp and condense; establishing a prediction model of condensation distribution in the switch cabinet based on a fractal theory; analyzing the condensation development process of the edge extraction condensation image based on an improved morphological method; the condensation development sequence of insulating parts in the switch cabinet is determined by simulating the diffusion process of wet air in the switch cabinet on the basis of multiple physical fields, the method is simple in principle, the parts, prone to generating condensation, in the switch cabinet can be accurately positioned, and the generation and development process of the condensation can be clearly analyzed and predicted.

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 belongs to the technical field of electromagnetic flow meters, and particularly relates to an anti-blocking intelligent electromagnetic flow meter. Comprising a converter arranged on the upper side of a shell, a first lining and a second lining, the first lining and the second lining are arranged in the shell, a sensor is installed on the first lining, and the first lining is rotationally connected with a flow guide ring; the flow guide ring is provided with a flow guide face and a plurality of first filtering holes. The solid particles are guided to the axis of the first lining through the flow guide surface, so that the solid particles in the two-phase flow are far away from the inner wall of the first lining, and the probability that the position, close to the sensor, of the inner wall of the first lining is scratched by the solid particles in the two-phase flow is reduced in the long-term use process; the surface smoothness of the inner wall, close to the sensor, of the first lining is guaranteed, so that the probability that solid particles are attached and accumulated in the position, close to the sensor, of the first lining and even cause blockage is reduced, and the accuracy of two-phase flow monitoring by the sensor is guaranteed.

The utility model discloses a caustic soda dosing system which comprises a stock solution pool, a dilution tank, a first water ejector and a second water ejector, the stock solution pool is connected with a chemical inlet through a first connecting pipe, and a water inlet of the first water ejector is connected with pressure water through a second connecting pipe. A liquid inlet of the first water ejector is connected with the stock solution pool through a third connecting pipe, a water outlet of the first water ejector is connected with the dilution tank through a fourth connecting pipe, a water inlet of the second water ejector is connected with pressure water through a fifth connecting pipe, a liquid inlet of the second water ejector is connected with the dilution tank through a sixth connecting pipe, and a water outlet of the third water ejector is connected with the third connecting pipe. A water outlet of the second water ejector is connected with a feeding point through a seventh connecting pipe, and the sixth connecting pipe is sequentially provided with an electromagnetic flow meter and a rotor flow meter. The device is simple in structure, high in feeding efficiency, accurate in metering, accurate in feeding and accurate in control of the pH value of factory water, improves the pH stability of the factory water, ensures the safety of water quality, and meets the requirements of batch water treatment.

The utility model belongs to the technical field of vending machines, and particularly relates to a hydrogen-rich water vending machine which comprises a cabinet body, a control system, a hydrogen production machine, a water-hydrogen mixing system, a water supply system, a pressure storage tank, an electromagnetic flow valve and an output pipe. The control system is arranged on the outer side of the cabinet body and comprises a control panel; the hydrogen production machine, the water-hydrogen mixing system, the water supply system, the pressure storage tank and the electromagnetic flow valve are arranged in the cabinet body; the water-hydrogen mixing system comprises two input ports and an output port, the water supply system is connected with one input port through a pipeline, the hydrogen production machine is connected with the other input port through a pipeline, the output port is connected with the storage tank through a pipeline, one end of the electromagnetic flow valve is connected with the pressure storage tank, and the other end of the electromagnetic flow valve is connected with the output pipe; the electromagnetic flow valve is opened, and the water in the pressure storage tank is output from the output pipe under the pressure of the water.

The high-frequency electromagnetic flowmeter comprises an electromagnetic flow converter and an electromagnetic flow sensor, the electromagnetic flow converter is electrically connected with the electromagnetic flow sensor, and the electromagnetic flow converter comprises an A / D analog-to-digital converter, a differential amplifier, a single-chip microcomputer, an electronic switch group and a direct-current constant-current source. The electromagnetic flow sensor comprises a measuring conduit, a measuring electrode, a magnetic conductive piece, a temperature sensor and a magnet exciting coil; according to the electromagnetic flowmeter, the high-frequency three-valued rectangular wave is adopted as excitation current, a flow signal with the sampling frequency one time higher than the excitation frequency is generated through induction, and therefore the noise interference restraining capacity of the electromagnetic flowmeter is improved; by adopting a technical measure which is the same as that of suppressing power frequency interference by low-frequency rectangular waves, the purposes of amplifying flow signals and suppressing power frequency series mode interference and common mode interference are achieved, and the production cost is reduced; the temperature sensor is additionally arranged in the electromagnetic flow sensor, so that the high-frequency electromagnetic flow meter can compensate and correct measurement errors caused by temperature changes.

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 a portable measuring apparatus (100) for measuring at least one sap flow in a plant, said plant having an external envelope, said apparatus (100) comprising: - a microwave transmitter (10) for emitting a microwave electromagnetic flow towards a first part of the external envelope of said plant so as to heat an internal portion of said plant; - a thermal sensor (20) arranged to capture thermal radiation from said plant over time, - a processing unit (30) configured to determine, from the thermal radiation captured by the thermal sensor, a displacement of the heat front over time in said plant and to estimate, on the basis of the displacement of the heat front, the sap flow Figure for the abstract: Fig. 2

An electromagnetic flow meter (10) includes an excitation coil (3) that is arranged in a measuring tube (1), and that generates a magnetic field in a direction perpendicular to a tube axis of the measuring tube (1), a return magnetic path (6) that is arranged on a side surface in a circumferential direction of a tube axis including the excitation coil (3) in the measuring tube (1), and that concentrates the magnetic field generated by the excitation coil (3) to an inside of the measuring tube (1), and a return magnetic-path auxiliary member that is arranged on at least one of an outer diameter side and an inner diameter side in the direction perpendicular to the tube axis of the excitation coil (3), and that complements a function of the return magnetic path (6).

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.

The utility model discloses a quench tower for condensed water in the related technical field of gas treatment devices, which comprises a water storage barrel and a quench barrel, one end of the water storage barrel is fixedly connected with a filter box, a filter frame is embedded in the filter box, the other end of the filter box is fixedly connected with the quench barrel, and the quench barrel is fixedly connected with the filter frame. The other end of the quenching barrel is fixedly connected with an end cover, an exhaust pipe is arranged on the end cover, and the exhaust pipe is fixedly connected with the end cover through a fixing frame. Through the design of the quenching frame, the refrigeration box and convection of waste gas and cold liquid, full contact with the waste gas is facilitated, the heat exchange efficiency is improved, practicability and economical efficiency are good, through the design of the concentration sensor, the electromagnetic flow valve and the air extracting pump, exhausted gas can be monitored, the power of the air extracting pump is adjusted in real time, and the service life of the air extracting pump is prolonged. The discharge of toxic and harmful substances is avoided, the working efficiency is ensured, and the practicability of the device is further improved.

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 a filling machine with a splash-proof structure for printing ink production, and aims to solve the problems that an existing filling machine with a splash-proof structure for printing ink production cannot carry out splash-proof on filling bottles of different models; the technical problems that in the printing ink filling process, the filling amount is too large or too small, and in the filling bottle conveying process, the filling bottle deviates from the position of a filling head easily are solved, a filling bottle conveying mechanism is arranged at one end of the filling table, and a printing ink storage box is arranged at the other end of the filling table; a loading beam is further arranged in the middle of the filling table, the top end of the loading beam is connected with a filling head through an electric push rod, one side of the filling head is connected with a hose through an electromagnetic flow valve, the other end of the hose is connected with a suction pipe through a suction pump, and a through groove is formed in the middle of one side of the loading beam; according to the anti-splashing sealing disc, ink is prevented from splashing to the outside from the opening of the filling bottle, so that the sealing disc is suitable for splashing prevention of filling bottles of different models.

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 utility model relates to the technical field of electromagnetic flow velocity sensors, and discloses a high-precision multi-electrode insertion electromagnetic flow velocity sensor, which comprises a pipeline, the top of the pipeline is fixedly connected with a mounting seat, the upper surface of the mounting seat is attached with a connecting flange, a mounting hole is arranged in the mounting seat, and the connecting flange is connected with the mounting hole. A fixing bolt is arranged in the connecting flange, the outer wall of the fixing bolt is in threaded connection with the interior of the mounting seat, a fixing ring is fixedly connected to the outer wall of the connecting flange, the outer wall of the fixing ring is attached to the outer wall of the pipeline, and a hinge is fixedly connected to one end of the fixing ring. According to the plug-in type electromagnetic flow velocity sensor, the problem that measurement data is unstable or inaccurate due to the fact that a traditional plug-in type electromagnetic flow velocity sensor is difficult to install and fix accurately and stably is solved, stable and accurate installation is achieved, the sensor is kept stable in long-term use, the flow velocity can be accurately measured, and high-precision data can be provided.

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.