2498 results about "Submersible pump" patented technology

The invention relates to a marine fishery breeding work ship deep water taking device and method, the marine fishery breeding work ship deep water taking device comprises a water taking cantilever, a submersible pump, a guide roller, a rolling part and a lifting device, the water taking cantilever is connected with a ship body through a rotation pair, and the water taking cantilever can stably descend underwater and keep the accurate water taking depth; the water taking method comprises the steps that the position and angle of a water taking cantilever are adjusted through a winding and unwinding winch, a temperature sensor at the water taking cantilever end monitors the seawater temperature in real time, and when the temperature reaches a preset value, a submersible pump is started to extract deep seawater; compared with a traditional method, the device has the characteristics of compact structure, simple operation, high efficiency and reliability; the problems that underwater butt joint is difficult, a hose is prone to damage and the like are solved, and operation efficiency and safety are remarkably improved; through the connection of the flexible short pipe, the flexibility and the stability in the water taking process are ensured, and meanwhile, the labor intensity of operators is reduced; the technology can be widely applied to marine fishery breeding, especially extraction of deep cold water resources, and has remarkable energy-saving, environment-friendly and economic benefits.

In some embodiments, a system for producing fluid from a well can include an electrical submersible pump (ESP) disposed in a wellbore of the well and configured to pump the fluid. The system may further include a distributed acoustic sensing (DAS) system, for example having an interrogator unit and a fiber optic cable extending downhole in the wellbore. An end of the fiber optic cable can be disposed downhole relative to the ESP. In embodiments, the system may further include a controller configured to receive data from the DAS system, process the data to detect a slug, determine a parameter of the detected slug, and alter operation of the ESP in response to determining that the parameter exceeds a threshold.

The invention relates to the technical field of oil exploitation, and provides a CFD-based electric submersible pump oil-gas-water three-phase flow adaptability analysis method and system, and the method comprises the steps: constructing a three-dimensional geometric model of an electric submersible pump, carrying out the initial grid division through CFD software, and optimizing the grid density through a self-adaptive grid refinement algorithm; setting oil well boundary conditions, a turbulence model and cavitation model parameters; steady-state and unsteady-state simulation calculation is carried out, and a flow field distribution diagram in the electric submersible pump is obtained; key performance parameters are extracted; simulating flow characteristics of oil-gas-water three-phase flow by adopting a turbulence model optimization algorithm based on multiphase flow coupling and combining a turbulence model, a multiphase flow model, an interphase turbulence correction term and an interphase interaction force model; and carrying out adaptability analysis on the oil-gas-water three-phase flow of the electric submersible pump. All-around technical support can be provided for design, operation and maintenance of the electric submersible pump, and technical progress and development of the oil exploitation industry are powerfully promoted.

The present invention relates to a method and system for detecting an anomaly of an electrical submersible pump, ESP. Specifically, the proposed invention provides: physics-based anomaly assessment, automatic data imputation using virtual sensors network (203), automatic continual learning based on automatic model drift detection, automatic failure prevention based on reinforcement learning, remaining useful life (RUL) estimation, and cohort analysis.

The invention belongs to the technical field of oil well production management, and discloses an electric submersible pump well group management system and method based on digital twinning. According to the method, operation data of an electric submersible pump unit and environmental data in a shaft are collected in real time, a multi-scale digital twinborn model is constructed for the received data, and the mechanical structure and electrical characteristics of the electric submersible pump unit, the multiphase flow dynamic state in the shaft and geological pressure field data are obtained; trend prediction is carried out on operation parameters, energy efficiency indexes and health states of the multi-scale digital twin model of each well; through a machine learning algorithm and an expert knowledge base, trend prediction data is associated with a historical health database, early warning and intelligent diagnosis of equipment faults are completed, and a maintenance strategy is generated. The method can assist managers to make decisions based on the historical health database. According to the invention, unified management and intelligent well patrol of multiple well sites can be realized, and the oil well production management efficiency is greatly improved.

The invention discloses an intelligent energy efficiency estimation method and system for a submersible pump, and belongs to the technical field of submersible pump energy efficiency optimization, and the method comprises the steps of submersible pump data collection, submersible pump feature engineering, energy efficiency loss evaluation, conveying medium evaluation and submersible pump energy efficiency estimation. According to the invention, a dual-path comprehensive energy efficiency estimation method combining energy efficiency loss evaluation and conveying medium evaluation is adopted, and two intelligent functions are combined, so that multi-dimensional and whole-process accurate evaluation of the operation state of the equipment is realized, and the accuracy and reliability of energy efficiency estimation are improved; energy consumption loss evaluation is carried out by adopting a flow vibration analysis method based on fuzzy intensity, so that accurate identification and quantitative analysis of various loss characteristics under complex working conditions are realized, the equipment state monitoring sensitivity is improved, and the accuracy and reliability of energy efficiency loss evaluation are enhanced; a multi-factor medium correction coefficient calculation method combined with coupling loss graph neural network prediction is adopted to carry out conveying medium evaluation, and online intelligent perception and dynamic correction of medium characteristics are achieved.

The invention belongs to the technical field of intelligent control of electric submersible pumps, and discloses a ground control system and control method of an electric submersible pump. A sensor module of the system is used for collecting operation data of the electric submersible pump in real time; the intelligent calculation module is used for analyzing and calculating the collected real-time operation data of the electric submersible pump to obtain optimized control parameters; the control execution module is used for generating a corresponding instruction according to the optimized parameters and accurately adjusting the steering, rotating speed and stroke parameters of the servo motor; the real-time monitoring and feedback optimization module is used for monitoring the system state after execution of the control execution module in real time and judging whether system operation is abnormal or not according to a real-time monitoring result; and the alarm optimization adjustment module is used for dynamically optimizing the control strategy of the electric submersible pump based on the parameter abnormal condition fed back by the real-time monitoring module after the abnormal state of the system is detected. The control efficiency of the electric submersible pump is effectively improved, and the problem that in the prior art, a control method is low in efficiency is solved.

The invention discloses a well submersible pump hydraulic design data modeling method, which comprises five steps of sensing acquisition, hydraulic data enhancement, hydraulic performance prediction, intelligent material matching and modeling output, relates to the technical field of pump hydraulic modeling analysis, and particularly relates to a well submersible pump hydraulic design data modeling method and system. A physical information confrontation generative network is combined with a space-time Kriging interpolation algorithm to enhance three-dimensional flow field data; a multi-modal graph neural network fusing physical control loss is constructed, and dynamic prediction of performance indexes such as pump body efficiency, lift and net positive suction head is achieved; based on a corrosion-wear coupling model and a reinforcement learning algorithm, the service life, the cost and the machinability of candidate materials are evaluated, an optimal combination is intelligently recommended, and systematic support is provided for design of an efficient, low-cost and long-service-life submersible pump for a well.

A fiber optic sensing system is disclosed for improved accuracy analysis of an ESP operating downhole. The fiber optic system continues to operate and transmit data after a down hole power cable has been grounded and cannot transmit data over the downhole power cable. Analysis of harmonics and power quality up to the two hundredth harmonic are measured and analyzed. Transient peaks along the complete cable run are measured and analyzed along with measures of electrical frequency; and 3 Phase Voltage & Current at the motor.

The invention discloses a long-shaft submerged pump, and belongs to the technical field of submerged pumps, the long-shaft submerged pump comprises a shell, a double-shaft driving assembly is rotatably connected in the shell, the double-shaft driving assembly comprises a first driving shaft and a second driving shaft which are coaxially arranged, the first driving shaft is connected with a rotary driving assembly, the first driving shaft is fixedly connected with a first impeller, and the second driving shaft is fixedly connected with a second impeller. A first internal spline is fixedly connected to the inner wall of the first driving shaft, the second driving shaft comprises an upper shaft and a lower shaft, the upper shaft penetrates through the first driving shaft and is in sliding connection with the first driving shaft, a second convex ring, a first external spline and a second external spline are fixedly connected to the outer wall of the upper shaft, and the second convex ring is connected with a lifting driving assembly; the lower shaft is rotationally connected into the shell, a second impeller is fixedly connected to the outer wall of the lower shaft, and a second inner spline is fixedly connected to the inner wall of the lower shaft. According to the long-shaft submerged pump with the structure, the lift of the submerged pump can be adjusted without disassembling the submerged pump, and the long-shaft submerged pump is convenient and fast to use.

The invention relates to the technical field of pipeline joints, in particular to a connecting and locking pipe joint for quickly mounting a pump pipe of a portable submersible pump, which comprises a pipe head, a locking structure, a rotating structure, a taking and placing structure, an adjusting structure and a compensating structure, the pipe head can be quickly and firmly connected through the locking structure to adapt to different pipe pump intervals, the connection stability and the sealing performance are improved, the installation difficulty is reduced, and the installation time is shortened; through the rotating structure, the taking and placing structure and the adjusting structure, the pipe joint can be conveniently carried, meanwhile, the position and angle of the grip can be flexibly adjusted according to site requirements after installation, the pipeline joint is stably supported, and the working stability is enhanced; the compensation structure enables the connecting pipe to slide and rotate, when the length of the pump pipe is changed due to the water level or other factors, automatic compensation can be achieved, sealing performance and normal work can be maintained, connection of the connecting pipe and the drainage pipe can be assisted, the connecting efficiency is improved, it is ensured that the submersible pump continuously and efficiently pumps water in the water level fluctuation scene, and the maintenance workload is reduced.

The invention belongs to the technical field of underwater operation, and relates to a maintenance device for a lower hinged support of a dock gate and a construction method thereof. The device comprises a waterproof cover box, a diving barge, a hoisting system and a drainage assembly, the waterproof cover box comprises a cover body and a channel well, openings are formed in the bottom and the top of the cover body, the bottom face of the cover body is in sealed compression joint with the surrounding structure of the lower hinged support to be maintained, the channel well is connected to the opening in the top of the cover body in a sealed mode, and the top face of the channel well is higher than the water surface. The diving barge is provided with a plurality of hydraulic supporting legs capable of ascending and descending so that the diving barge can be supported in the horizontal door pit. The hoisting system comprises a tower frame and an arm frame which are arranged on the diving barge, and one end of the arm frame is located above the cover body and connected with the cover body in a pressing mode; the drainage assembly comprises a submersible pump and a drainage pipe, the submersible pump is arranged in the cover body, one end of the drainage pipe is connected with the submersible pump, and the other end is led to the water surface through the channel well. According to the method, a stable dry operation environment can be rapidly constructed at the dock gate lower hinged support to be maintained, rapid maintenance is achieved, pollution to a sea area is avoided, and operation safety is improved.

The invention relates to the technical field of highway engineering, and discloses an environment-friendly dust falling device for highway engineering construction, which comprises a vehicle body, a box body is fixedly connected to the top of the vehicle body, a lifting plate is arranged above the box body, and a dust falling mechanism is arranged on the box body. The dust falling mechanism comprises a water tank, a submersible pump, a folding pipe, a hollow pipe, a first motor, a connecting pipe, a three-way pipe and an atomizing nozzle, the water tank is fixedly connected to the top of the inner wall of the box body, and the submersible pump is arranged at the bottom of the inner wall of the water tank. An electromagnet can be driven to move according to the wind direction of a construction site by arranging a wind indicator, an atomizing nozzle can be driven to rotate according to the wind direction of the site by arranging a first motor, a hollow pipe, a rotating disc, a clamping base, the electromagnet, a spring and a magnet block, the atomizing nozzle is opposite to the wind direction, and therefore water mist sprayed by the atomizing nozzle can make better contact with dust; therefore, the dust falling effect of the construction site is improved.

A method for controlling a permanent magnet (PM) synchronous motor in an ESP application is provided. A load angle of the PM motor is estimated. A voltage adjustment value is determined for the PM motor based at least on the estimated load angle of the PM motor. A voltage to be applied to the PM motor is determined based on the voltage adjustment value.

The invention relates to the technical field of submersible pumps, and discloses a submersible digital pump and a digital control system, the digital control system comprises a data acquisition module, a calculation module, an identification module, a strategy module and a control module; wherein the data acquisition module is used for acquiring operation parameters and state parameters of the submersible digital pump; the calculation module is used for calculating the operation efficiency and the efficiency deviation value of the submersible digital pump; the identification module is used for identifying the load responsiveness and the structure collaboration of the efficiency deviation value and identifying the low-efficiency operation condition of the submersible digital pump; the strategy module is used for formulating an efficiency adjustment strategy; and the control module generates a rotating speed control instruction based on the efficiency adjustment strategy, and adjusts the operation efficiency of the submersible digital pump in the low-efficiency operation condition based on the rotating speed control instruction. According to the application, intelligent identification and self-adaptive regulation and control of the operation efficiency of the submersible digital pump are realized, and the operation stability of the submersible digital pump is improved.

The invention discloses a regulation and control method, device and equipment for an electric submersible pump layered producing well simulation model and a medium, relates to the technical field of computers, is applied to an intelligent agent and comprises the steps that current state information of the current environment where the electric submersible pump layered producing well simulation model is located is obtained; determining a regulation action according to a depth deterministic strategy gradient algorithm and based on the current state information; the regulation action is a regulation preset parameter; the preset parameters are one or more of the motor operation frequency of the electric submersible pump layered producing well, the diameter of a wellhead oil nozzle and the opening degree of each layer of inflow control device; the electric submersible pump layered producing well simulation model is regulated and controlled based on the regulation and control action, and the working performance corresponding to the regulated and controlled model is determined; judging whether the working performance meets a preset condition or not; and if not, skipping to the step of acquiring the current state information corresponding to the current environment where the electric submersible pump layered producing well simulation model is located until the working performance meets the preset condition. The speed and precision of regulation and control can be improved.

The invention discloses an energy-saving and efficiency-improving submersible pump for an integrated pump gate. The energy-saving and efficiency-improving submersible pump comprises a gate body and a submersible pump body, the pump body part comprises an impeller, a rotating shaft and a pump shell, the inducer is arranged at the upstream end of the impeller, and the impeller comprises impeller blades and a hub; the device is characterized in that a step part is arranged on the peripheral surface of the lower end part of the hub, the inducer comprises inducing blades and an adjusting cylinder, the upper end of the adjusting cylinder is connected with the step part, the lower end of the adjusting cylinder is connected with an adjusting cap, a drainage cavity is formed among the adjusting cap, the adjusting cylinder and the lower end part of the hub, a first through hole is formed in the adjusting cap, and a second through hole is formed in the adjusting cylinder; third through holes are formed in the induction blades, and the third through holes penetrate to the blade tops of the induction blades. The suction performance of the submersible pump can be improved, the influence of boundary layers between the induction blades and impeller blades and secondary flow on liquid flowing is reduced, and therefore the hydraulic performance and efficiency of the submersible pump can be improved, and the good effects of energy saving and efficiency improving are achieved.

The invention belongs to the technical field of oil-gas field development, and discloses an intelligent separate mining process pipe column suitable for slim holes and an implementation method. The intelligent separate mining process pipe column comprises a sand control pipe column and a control pipe column, wherein the sand control pipe column comprises a sand control screen pipe located in an open hole section, a sand control top packer located at the front end of the sand control screen pipe and at least one open hole segmented sand control packer used for segmenting the open hole section to form a plurality of sub open hole sections; the bottom-hole regulator string at least comprises bottom-hole regulators located in all the sub open hole sections, electric control setting packers which are matched with the open hole segmented sand control packers in a setting mode and connected with the adjacent bottom-hole regulators, a lower intelligent node connected with the bottom-hole regulator at the foremost end and a releasing tool connected with the lower intelligent node; the production pipe column at least comprises an upper intelligent node and an electric submersible pump which are sequentially connected from bottom to top. The upper intelligent node is connected with the ground control device through a first steel pipe cable, the bottom-hole regulator is connected with the lower intelligent node through a second steel pipe cable, and the upper intelligent node penetrates through the releasing tool to be in magnetic coupling connection with the lower intelligent node.

The invention belongs to the technical field of plastic plate machining, and particularly relates to a soft plastic plate cutting device and process. The cutting assembly comprises a moving box; the bottom of the moving box is fixedly connected with a connector; a cutting knife is rotationally connected into the top of the moving box; a submersible pump is fixedly connected into the bottom of the moving box; the inner side wall of the moving box is fixedly connected with a group of atomizing nozzles; a guide pipe is communicated between the atomizing nozzle and the submersible pump; and a porous cover is arranged outside the atomizing nozzle. The cutting knife is cooled in a water mist mode, the cooling uniformity of the cutting knife can be improved, the motion resistance of the cutting knife can be reduced, a large amount of water cannot be left on the surface of the cutting knife and thrown out by the cutting knife, in addition, part of water mist escapes outwards through the top of the moving box, and therefore plastic powder generated in the cutting process is captured; and the pollution degree of raised dust to the working environment is reduced.

The anti-blocking submersible pump comprises a pump body, the pump body comprises a driving part, a pump cavity part and a liquid inlet part, the pump cavity part is located between the driving part and the liquid inlet part, the pump cavity part is provided with an impeller, the driving part is provided with a driving rod, the liquid inlet part is provided with a liquid inlet cylinder and a cutting cylinder, the liquid inlet cylinder is arranged on the outer wall of the cutting cylinder in a sleeving mode, and the cutting cylinder is provided with an impeller. The cutting cylinder abuts against the inner wall of the liquid inlet cylinder, the cutting cylinder is connected with the driving rod, the liquid inlet cylinder is provided with a liquid inlet hole, the cutting cylinder is provided with a cutting hole, and the cutting hole is used for cutting aquatic plants. The cutting barrel is arranged, when strip-shaped foreign matter such as aquatic plants penetrates through the liquid inlet hole and the cutting hole to enter the liquid inlet part, the hole wall of the cutting hole of the rotating cutting barrel and the hole wall of the liquid inlet hole have the cutting effect similar to shearing through scissors, and therefore the situation that the aquatic plants enter and wind the impeller is reduced, and the situation that the liquid inlet barrel is blocked is reduced; the working stability of the pump body is improved.

The utility model belongs to the technical field of submersible pump motors, and particularly relates to submersible pump motor press-fitting equipment which is used for press-fitting forming of a pump shell, a stator, a rotor and a rear cover and comprises a rack and a rotary table device which is installed on the rack, a plurality of material carrying seats are arranged on the rotary table device, and the rotary table device drives the material carrying seats to be switched to set stations; the material cleaning device is used for cleaning the interior of the pump shell; the material heating device is used for heating the pump shell; the material changing device is used for moving the heated pump shell to the material heating device; the first press-fitting device is mounted on the rack and used for obtaining the heated pump shell and pressing the pump shell and the stator; the material control device is installed on the machine frame, and the material control device turns over the pump shell so that the rotor and the rear cover can be installed; the second press-fitting device is arranged on the rack and used for press-fitting the rotor and the rear cover on the pump shell; and the discharging device is located on the side of the rack, and after the material control device conveys the pump shell assembled with the stator, the rotor and the rear cover out of the station, the discharging device conducts discharging.

The utility model discloses a combined ultrasonic cleaning machine, particularly relates to the technical field of ultrasonic cleaning machines, and comprises an ultrasonic cleaning machine main body, the top of the ultrasonic cleaning machine main body is provided with a first cleaning tank, a second cleaning tank and a third cleaning tank which are sequentially distributed from left to right; water is stored in the first cleaning tank, the second cleaning tank and the third cleaning tank, and a net bag is arranged in the first cleaning tank. According to the ultrasonic cleaning machine, articles are cleaned three times, the articles are cleaned more cleanly, the two grooves are used for collecting sewage dripping in the moving process of the net bag, the sewage is prevented from polluting the surface of the ultrasonic cleaning machine body, then the submersible pump and the spray gun are used for automatically flushing the first cleaning tank, the second cleaning tank and the third cleaning tank, and the cleaning efficiency is improved. And the gooseneck pipe is pulled to adjust the position of the spray gun, and meanwhile, sundries are scraped out of the water collecting cavity through the frame and the filter screen, so that a user can conveniently clean the ultrasonic cleaning machine body.

The gravel geology pit-in-pit dewatering construction method comprises the following steps that a foundation pit dewatering tube well is excavated and arranged on the side edge of a large foundation pit, and the water level is lowered to the preset elevation; a local ultra-deep position dewatering well with the preset depth is excavated and arranged on the side edge of the pit in the pit, and a dewatering well protection cage formed by binding a reinforcing steel bar structure in a well pipe shape and densely covering a steel wire net is arranged; a submersible pump is put into the precipitation well protection cage, and the submersible pump is started for pit-in-pit precipitation; keeping rainfall, and carrying out formwork construction of a concrete cushion layer in the pit; and after the concrete cushion layer of the pit-in-pit reaches the strength, form removal is conducted, the submersible pump is taken out, the dewatering well at the local ultra-deep position is backfilled, and cushion layer construction of the large foundation pit is conducted. According to the construction method, formwork erecting construction of the concrete cushion layer in the pit is firstly carried out, then the dewatering well at the local ultra-deep position is backfilled, and then cushion layer construction of the large foundation pit is carried out, so that the integrity is guaranteed; by means of the dewatering well protection cage, the dewatering effect is guaranteed, cost is reduced, the dewatering well protection cage is denser after backfilling, and the structural strength is improved.

The present disclosure relates to a wellhead penetrator system comprising a penetrator body comprising a hollowed cylindrical frame connecting a top end to a bottom end; a cable seal located within the penetrator body, comprising: a cylindrical core made of a polymer having three cylinder-shaped port holes configured to each provide a path for of the three insulated electrical wires; a top side, wherein the port holes extend upward from the top side of the cable seal; and a bottom side facing into the cavity located in the bottom end of the penetrator body, wherein the port holes extend downward from the bottom side of the cable seal; and a follower comprising a cylindrical metal body and cylindrical holes, wherein the follower seats against the bottom side of the cable seal so that port holes of the cable seal protrude through the cylindrical holes of the follower.

Continuous gross rate of each of a plurality of wells is estimated. Information provided by sensors configured with each of a plurality of electrical submersible pumps is received. Information associated with a respective model of each of the plurality of electrical submersible pumps is accessed. Utilizing at least one of artificial intelligence and machine learning, the information provided by sensors and the information associated with the respective model of each of the plurality of electrical submersible pumps is processed to estimate a first gross rate of each of the plurality of wells. A second gross rate of each of the plurality of wells is estimated via a pipeline simulation that applies a physics-based model. A continuous gross rate for each of the plurality of wells is estimated as a function the first gross rate and the second gross rate.

The invention belongs to the technical field of water pumps, and particularly relates to a variable-frequency submersible pump water shortage detection method which comprises the following steps: S1, initializing a single chip microcomputer, and setting no-load power PS and a temperature change threshold TS; s2, processing water pump driving and other functional processes; s3, the temperature Ti, the voltage Ui and the current Ii are detected regularly; s4, the operation power Pi of the water pump is calculated according to the formula Pi = UiIi; s5, if the number of times that the water pump operation power Pi is smaller than the no-load power PS exceeds 50% within the continuous preset time, the step S8 is executed; otherwise, executing the step S6; s6, the temperature difference value delta Ti between the current temperature Ti and the previous temperature Ti-1 is calculated; s7, if the temperature difference values delta Ti of continuous preset times are all larger than the temperature change threshold TS, the step S8 is executed; otherwise, executing the step S2; and S8, setting a water shortage mark, stopping driving of the water pump, and returning to the step S2. Damage caused by the fact that the water level only submerges the pump body but the motor and the variable frequency driving plate are exposed in the air can be effectively avoided.

The invention relates to the field of petroleum engineering, and provides a steady-state real-time collaborative optimization method and system for an offshore oil underwater production system. The method comprises the four steps of underwater production system health state evaluation, redundant electric submersible pump active and standby dynamic alternation model establishment, underwater production system production strategy evaluation and underwater production system multi-target collaborative optimization model establishment. The invention discloses a steady-state real-time collaborative optimization system for an offshore oil underwater production system. Comprising an underwater production system health state evaluation subsystem installed on an underwater control module, and a redundant electric submersible pump main-standby dynamic alternation subsystem installed on an underground mechanical module. The production strategy evaluation subsystem of the underwater production system is installed on an overwater control station; and the multi-target collaborative optimization subsystem of the underwater production system is installed on an underwater control module.

A dam termite nest integrated positioning grouting killing device and method comprises a drilling grouting device, the drilling grouting device is connected with a pressure pump through a first connecting pipe, the pressure pump is connected with a submersible pump and a water pipe through a three-way pipe, the water pipe is connected with a stirring tank through a fourth connecting pipe, and termite nest filler is arranged in the stirring tank. The termite nest filling agent is connected with a pressure pump through a sludge pump and is poured and filled into a dam termite nest through a drilling and grouting device; the drilling grouting device is provided with a lifting drill bit, the lifting drill bit is of a hollow structure and communicated with the first connecting pipe, and the lifting drill bit is connected with one or more hollow drill pipes. The termite nest located in the dam is accurately found through the drilling and grouting device, then the termite nest filler is used for filling to complete the grouting and killing function, positioning is accurate, the killing effect is good, and the dosage of chemicals is small.

The invention relates to the technical field of water quality detection, in particular to a water quality detection device convenient to operate, which comprises a ship body, a propeller is arranged at the bottom of the ship body, a water taking mechanism, a water storage mechanism and a water purification mechanism are arranged on the ship body, the water storage mechanism comprises a water storage container fixed on the ship body, and a drainage pipe is arranged at the bottom of the water storage container. A rotating seat is arranged at the top end of the water storage container, a driven gear is concentrically fixed on the outer wall of the rotating seat, the driven gear is driven by a first motor mounted on the outer wall of the water storage container, an electric push rod is mounted at the top end of the rotating seat, the telescopic end of the electric push rod extends into the water storage container, and a detector is fixed to the telescopic end. According to the device, the ship body and the propeller are arranged, so that the device can be moved to different positions in a river channel, and meanwhile, the height of the submersible pump in the river channel can be adjusted by winding and unwinding the submersible pump through the winding disc, so that water samples at different positions and different depths can be collected.

The utility model relates to the technical field of submersible pumps, and discloses a well submersible pump self-adaptive to water depth, which comprises a mounting ring seat and a submersible pump, a locking column is mounted on the outer wall of the mounting ring seat, threads are arranged at the contact position of the locking column and the mounting ring seat, and a rotating handle for rotating is mounted at the outer end of the locking column. According to the well submersible pump capable of self-adapting to the water depth, after the submersible pump is put into a water well, the buoyancy plate floats on the water surface, so that the distance between a water inlet in the bottom end of the submersible pump and the water surface is adjusted, use is convenient, and manual hoisting control over the depth through a rope on the ground is not needed; the buoyancy plate can move up and down along with the water surface, so that a water inlet in the bottom end of the submersible pump keeps the same distance with the water surface all the time, the supporting screw is prevented from getting close to the water surface to suck impurities floating on the water surface, manual water pump position adjustment is not needed, and use is convenient.