89results about How to "Maintain dynamic balance" patented technology

The invention belongs to the technical field of logistics platforms, and relates to a logistics guarantee deposit pricing method based on intelligent risk assessment, which comprises the steps of introducing a weighted risk assessment model to assess a risk level, introducing a business basic guarantee deposit calculation model to support a pricing interval of guarantee deposit, determining an appropriate overall risk coefficient according to the risk level, and calculating the risk level according to the overall risk coefficient. And finally, combining the overall risk coefficient with a business basic guarantee deposit calculation model, thereby matching a proper pricing guarantee deposit. The evaluation of the weighted risk evaluation model comprehensively considers each risk factor, and identifies and determines key factors affecting the transportation risk. The key factors of the transportation risk comprise the cargo value, the transportation distance, the cargo quantity, the transportation mode risk coefficient and the driver reputation, and the weighted risk assessment model performs analysis by taking the key factors as evaluation indexes and finally assesses the transportation risk. According to the invention, through analysis of logistics transaction data, the actual risk level of the transaction can be accurately assessed, and personalized requirements of deposit setting are met.

The invention provides an innovative vector propulsion system of a low-altitude airship, aims to provide accurate attitude adjustment and path planning capabilities for the low-altitude airship in a complex space environment, and consists of a plurality of key components, comprising an executing mechanism, a power driving module, a vector rotating mechanism, a propeller connecting mechanism, a detecting module and a propeller control system. The core characteristic of the airship is that adjusted vector thrust can be applied to any direction in a three-dimensional space so as to respond to real-time attitude adjustment and control requirements, so that accurate vertical rising, lateral flying and rotating operation of the airship in a limited space are realized; due to the unique design, the influence of the thrust direction change on the gravity center of the airship is reduced to the maximum extent, and therefore it is ensured that the low-altitude airship keeps the stable posture, and meanwhile fine control is achieved; the system is further integrated with a set of independent control system so as to guarantee accurate output of thrust angles, meanwhile, the overall structure is light and handy, the system particularly meets the requirements of low-altitude small airships, and the maneuverability and adaptability of the system in a narrow space are enhanced.

The invention relates to the technical field of railway line flaw detection, in particular to railway line automatic comprehensive flaw detection equipment which comprises two steel rails and a flaw detection car and further comprises a C-shaped mounting plate, a buffer assembly, a waist detection mechanism and a bottom detection mechanism. A first fixing rod is transversely arranged in the C-shaped mounting plate, fixing sleeves are slidably connected to the two ends of the first fixing rod correspondingly, and balance assemblies are arranged at the ends, away from each other, of the two fixing sleeves correspondingly. The device has the advantages that different detection assemblies are arranged for different detection areas, so that steel rail detection of different parts is more efficient and accurate, it is ensured that different types of defects can be detected, the detection period is shortened, the balance assembly and the buffer assembly cooperate with each other to enable the head detection assembly to keep a dynamic balance state, and the detection efficiency is improved. The probe is effectively protected from vibration damage, and the adaptability of the probe to the change of the steel rail and the detection stability of the probe are improved.

The invention discloses a main shaft system of a multi-wire cutting machine and a synchronous control method of the main shaft system, the multi-wire cutting machine comprises three main shafts and three driving rollers, the three main shafts are driven by three driving motors to rotate respectively, and the three driving rollers are installed on the three main shafts respectively; the driving motors are servo motors and can control the rotating speed of the main shaft and feed back the torque of the main shaft. The main shaft synchronous control method of the multi-wire cutting machine comprises the steps that torques fed back by the three main shafts are compared, when the torque fed back by one main shaft is too large, the rotating speeds of the other two main shafts are adjusted, the torques fed back by the three main shafts tend to be consistent, and the peripheral linear speeds of the three driving rollers tend to be consistent. In the invention, the cutting line is driven by multiple spindles, so that the load of each spindle can be equally divided, the linear speed of each spindle tends to be consistent, and the equipment can continuously and stably run.

The invention discloses an optimization system for intelligent operation and maintenance of a new energy generator set. The optimization system comprises a data acquisition module for acquiring operation state data and external environment data of the generator set through a sensor network; the data processing and storage module is used for carrying out preliminary data processing by utilizing edge computing equipment; the algorithm model module comprises a maintenance optimization model and a dynamic energy efficiency optimization model based on reinforcement learning; the invention discloses an optimization method for intelligent operation and maintenance of a new energy generator set. The optimization method comprises the following steps: S1, data acquisition and preprocessing; s2, constructing a maintenance optimization model based on reinforcement learning; s3, constructing a dynamic energy efficiency optimization model; s4, fault prediction and maintenance strategy optimization; and S5, system integration and feedback execution. According to the method, the operation parameters of the generator set are adjusted in real time, it is guaranteed that the generator set is always in the optimal operation state under different external environment conditions, and the dual purposes of maximum utilization of resources and minimum energy consumption are achieved.

The invention discloses a combustion chamber control method for coal seam in-situ gasification mining and application of the combustion chamber control method. The method comprises the steps that whether the injection-production point retreating time is met or not is judged according to the flow of a production well and / or the high calorific value of produced gas; if yes, an injection-production point retreating mode is selected according to the type of a production well pipeline, the retreating distance, a retreating injection point and / or a production point are / is determined according to the thickness of a coal seam and the size of a current combustion cavity, and the injection well and the production well are double horizontal wells for conducting in-situ gasification production on the coal seam. According to the method, stable combustion of the deep coal seam combustion cavity can be achieved, stability of the output gas flow and the heat value is guaranteed, and long-time benefit mining is guaranteed.

The invention relates to the technical field of brake-by-wire, in particular to a high-precision brake-by-wire mechanism of a composite mobile robot and a braking method of the high-precision brake-by-wire mechanism, the high-precision brake-by-wire mechanism comprises a controller and a braking mechanism part, and the controller comprises a hydraulic control loop system and a braking line control system; the brake mechanism part comprises a left wheel set mechanism, a right wheel set mechanism and a brake mechanism; the braking method comprises the following specific steps that S1, hydraulic pressure is transmitted; s2, real-time braking force is monitored; s3, feeding back a braking force value; s4, adjusting; the design that the brake motor controls hydraulic brake is adopted, the torque unbalance caused by the uneven road surface is more accurately treated, and the advanced dynamic balance compensation mechanism ensures that the stability of the brake effect and the dynamic balance of the vehicle can be maintained even under the complex road surface condition.

The invention relates to the technical field of aquatic product oxygenation, and discloses an aquatic product oxygenation system and method based on an aquatic product floating head monitoring system, and the system comprises an oxygenation judgment module which is configured to collect the floating head condition of fishes in a to-be-detected water area, and judges whether the to-be-detected water area needs to be oxygenated or not; the oxygenation calculation module is configured to collect the content of dissolved oxygen in the water area to be detected and calculate the oxygenation content required by the water area according to the standard oxygen content of the water area; the oxygenation adjusting module is configured to collect the real-time air pressure value of the water area and adjust the oxygenation content needed by the water area for the first time according to the real-time air pressure value; the oxygenation adjusting module is further configured to collect the temperature of the water area in real time, conduct secondary adjustment on the oxygenation content needed by the water area according to the environmental factors, and conduct oxygenation on the water area with the oxygenation content needed by the water area after secondary adjustment as the final needed oxygenation content; and a storage module. According to the invention, efficient and accurate oxygenation control is realized through multi-dimensional data acquisition and intelligent judgment.

The invention relates to the related technical field of regulation and control components, and discloses a regulation and control component-based intelligent sofa self-adaptive control system, which comprises an inclination angle sensing module, the inclination angle sensing module is used for detecting the real-time space attitude of a detected component, and the data of the real-time space attitude comprises the X-axis rotation offset, the Y-axis rotation offset, the Z-axis rotation offset and the time; the posture adjusting module is used for driving the manipulated assembly to adjust the three-dimensional posture; the damping regulation and control module is arranged in the posture regulation module and is used for providing adjustable damping for the manipulated assembly; a plurality of tension adjusting assemblies are distributed on the periphery of the adjusting disc, the bottoms of the tension adjusting assemblies are connected with a pull rope, when the balance box inclines, a transmission conical head in the tension adjusting assembly in a certain direction can be driven by the pull rope to move downwards, and the situation that the whole device is unbalanced and topples due to excessive inclination of the balance box is avoided.

The invention discloses a bodybuilding weight-bearing skipping rope, and relates to the technical field of bodybuilding equipment, the bodybuilding weight-bearing skipping rope comprises a rope body and two handles, the two handles are connected with the two ends of the rope body respectively, the rope body is hollow, a plurality of weighting pieces are arranged in the rope body, fixing pieces for fixing the ends of the rope body are arranged in the handles, and the handles are connected with the rope body. The rope body is internally provided with a plurality of weighting pieces, the weighting pieces are connected in the handle in a sliding mode, a rotating disc is arranged at the end, opposite to the connecting end of the handle and the rope body, of the handle, and the rotating disc penetrates through the end of the handle through a rope to be connected with the fixing piece. Due to the flexibility, the skipping rope can adapt to different exercise levels and targets, and the length of the rope body can be adjusted through the fixing piece.

The present application discloses an automated detection system and method for butterfly gas cylinder processing technology, belonging to the field of butterfly gas cylinder detection technology. The automated detection system includes a clamping unit for fixing the inner liner of the butterfly gas cylinder, a pressure detection unit, a temperature detection unit and a pressure regulating unit. The automated detection method uses the automated detection system. The pressure sensor of the pressure detection unit is arranged at different positions of the inner liner of the butterfly gas cylinder to realize real-time monitoring of the pressure at different positions. When the pressure difference between the external pressure and the internal pressure of the inner liner of the butterfly gas cylinder exceeds a certain range, the pressure of the inner liner of the butterfly gas cylinder is timely adjusted through the gas channel of the clamping unit by the pressure regulating unit, so that the pressure difference between the external pressure and the internal pressure of the inner liner of the butterfly gas cylinder is kept within a reasonable range, so that the internal and external pressures of the thin-walled butterfly gas cylinder liner are kept in dynamic balance at any same time or any same period during the winding process and the high-temperature curing stage.

The invention discloses a micro-grid control method and device based on variable virtual inertia and damping, a medium and a product, and relates to the technical field of micro-grid distributed photovoltaic coordination stability control systems. Simulating dynamic characteristics of the synchronous generator by introducing virtual inertia and a damping coefficient; performing adaptive adjustment on virtual inertia and a damping coefficient in the virtual synchronous machine model by using the small signal model; modeling the micro-grid based on the virtual synchronous machine model to obtain a micro-grid model; the micro-grid model comprises a photovoltaic array model, an energy storage device model and a virtual synchronous machine model; and based on the micro-grid model, determining control parameters of the micro-grid by using a primary function network algorithm. According to the method, the rationality of micro-grid control is improved by adjusting the virtual inertia and the damping coefficient.

The utility model discloses circumference drilling equipment for PE water supply pipe production, which comprises a drilling machine body and a clamping mechanism arranged on the top of the drilling machine body, the drilling machine body comprises a base, the clamping mechanism comprises sliding blocks correspondingly arranged on the left side and the right side of the base, and the opposite sides of the sliding blocks are fixedly connected with second electric push rods. The equipment has the advantages of being convenient to adjust and efficient in clamping, and the problems that part of drilling equipment is inconvenient to adjust according to the specifications of the PE water supply pipes, the clamping effect on the water supply pipes is not ideal, more time needs to be consumed for adjusting the equipment every time the PE water supply pipes of different specifications are replaced for drilling operation, the working efficiency and the productivity are reduced, and the production cost is reduced are solved. And meanwhile, due to unstable clamping, the pipe can slide or vibrate too much in the drilling process, the safety risk of operators is increased, meanwhile, extra pressure can be generated on a drill bit, and the drill bit can be fractured or excessively abraded.

The shaft end of an input shaft of the parallel shaft gearbox type speed reducer is connected with a motor shaft through a locking ring, the locking ring comprises a locking ring body and an installation body, the locking ring body comprises a deformation part and a base body part which are symmetrically distributed, the deformation part and the base body part are both of a semi-annular structure, and the installation body is connected with the deformation part. An adjustable locking hole is formed between the deformation part and the base body part, the deformation part and the near end of the base body part are integrated, an adjusting notch is formed in the far end, and screw holes are formed in the far ends of the deformation part and the base body part; two first balance holes are formed in the outer end face of the lock ring body in the axial direction, and the two first balance holes and the screw holes of the deformation part and the base body part form dynamic balance. According to the speed reducer, the locking ring is arranged at the end of the input shaft so as to achieve lossless hooping and quick disassembly and assembly of the motor shaft, friction is reduced, the total heating value is reduced, the grease leakage phenomenon of the sealing ring is reduced to a certain extent, the overall dynamic balance state of the locking ring can be kept through the balance hole formed in the locking ring, and the service life of the speed reducer is prolonged. And unbalanced vibration and noise in the transmission process are reduced.

The invention discloses a washing machine drive control circuit and a control method and device thereof. The method comprises the steps that in the rotating process of an inner barrel of the washing machine, the bus voltage and the input voltage of a washing machine driving control circuit are obtained; setting a reference voltage of the washing machine driving control circuit according to the input voltage; and adjusting the bus voltage through a bus voltage stabilization controller in the washing machine driving control circuit so as to enable the voltage difference value between the bus voltage and the reference voltage to be smaller than the voltage difference threshold value. The technical problem that the safety of a driving control circuit device is threatened due to the fact that the bus voltage is too high when the washing machine is braked and stopped in the related technology is solved.

The embodiment of the present disclosure provides an offshore monitoring system. In a specific embodiment, the system comprises an offshore anchoring platform and a float; the offshore anchoring platform is provided with a traction assembly for connecting the float; the float is provided with an aerial wind power generation assembly, a monitoring assembly, a wireless communication assembly, a controller and a first energy storage unit, the monitoring assembly comprises a target monitoring assembly and a meteorological monitoring assembly; the controller is used for acquiring a first state of charge of the first energy storage unit, and controlling the running states of the aerial wind power generation assembly, the target monitoring assembly, the meteorological monitoring assembly, the wireless communication assembly and the first energy storage unit according to meteorological information acquired by the meteorological monitoring assembly. The embodiment can realize the dynamic balance among energy production, energy storage and load, and the integration of source acquisition and information sensing depth.

The application provides an organic synthesis steam recovery device and relates to the technical field of steam recovery.The device comprises a steam recovery tank and an air floatation separation tank arranged in the steam recovery tank, the steam recovery tank is internally provided with a spiral cold water pipe and a spiral partition plate, the air floatation separation tank is internally provided with an organic matter separation pipe and a gas overflow port provided with a gas diffusing plate, steam enters from a steam inlet, and then is countercurrently convected and condensed along the spiral partition plate and the spiral cold water pipe, condensed water and uncondensed gas enter the air floatation separation tank after being refined into bubbles by the gas diffusing plate, and through secondary condensation and air floatation during the rising process of the bubbles, organic matter impurities and pure condensed water are separated, compared with a traditional device, the application solves the problems of insufficient condensation, difficult impurity separation and loose structure, has the advantages of complete heat energy recovery, accurate organic matter separation and stable and compact operation, and is suitable for efficient treatment and resource recycling of high-temperature steam containing impurities in the organic synthesis industry.

This application proposes a sensor control method and system for intelligent terminals based on ant colony optimization (ACO) algorithm. The method includes: determining scene nodes and their characteristics, and task priorities along a route; determining the current scene node; controlling each intelligent terminal to periodically broadcast via a low-power communication module; evaluating the efficiency-to-energy ratio and mapping the results to pheromone concentration in the ACO algorithm; selecting intelligent terminals as detection nodes; and controlling the detection nodes to generate sensor schemes and perform detection according to these schemes. This application achieves scene-based, refined, and adaptive sensor control through the synergy of scene adaptation, dynamic evaluation, intelligent point selection, and refined control. This ensures precise matching of sensor control strategies with environmental requirements, guarantees a dynamic balance between energy consumption and accuracy, and optimizes sensor resource allocation, comprehensively improving the accuracy, adaptability, and energy economy of intelligent terminal sensor control.

The invention provides a pressure adjusting method and device, electronic equipment and a storage medium. A load change signal of a steam turbine and main steam pressure of a boiler are monitored, and whether a main steam pressure set value is locked or not is judged based on the load change signal; under the condition that it is determined that the main steam pressure set value is locked, the air exhaust flow needing to be subjected to pressure compensation on the boiler is determined, and pressure compensation is conducted on the boiler according to the air exhaust flow; and based on the load change signal and the main steam pressure, the pressure change optimal rate is calculated, and the main steam pressure of the boiler is adjusted according to the pressure change optimal rate. Compared with the prior art, it can be ensured that the boiler operates under the optimal working condition, and the combustion efficiency and the heat efficiency are improved; according to the optimal pressure change rate calculated according to the load change signal and the main steam pressure, the main steam pressure of the boiler is adjusted, energy efficiency loss caused by too fast or too slow pressure change can be avoided, and the operation efficiency of the boiler is further optimized.

The utility model discloses a novel warmer panel which comprises a panel body, the top of the panel body is provided with a fixed shell, the top of the fixed shell is provided with a movable shell, through an elastic clamping mechanism of a clamping block and a clamping groove, rapid assembly of the warmer panel is achieved, the assembly efficiency is remarkably improved, and the practicability is high. By means of the gap between the movable shell and the fixed shell and the compression and reset functions of the spring, the position of the movable shell can be automatically adjusted, the movable shell is allowed to incline and stretch out and draw back by a certain amplitude in the fixed shell, the installation inclination of the heater main machine is effectively adapted, it is ensured that the movable shell is tightly attached to the main machine air outlet all the time, and the service life of the heater main machine is prolonged. And the dynamic balance of the fitting degree of the air outlet is ensured, and the use stability and the heat efficiency of the warmer are improved, so that the problem that a gap is large due to mismatching of installation is avoided, the air leakage phenomenon is greatly reduced, and high practicability and market popularization value are achieved.

This invention belongs to the field of metallurgical coking technology and discloses an environmentally friendly and safe start-up method for a coal moisture conditioning system. This method addresses problems such as unstable moisture control, dust emission, equipment thermal stress damage, and explosion-proof safety risks during the start-up process of a coal moisture conditioning system. It achieves safe and stable startup through an innovative sequential operation process of multi-system collaborative control. Core technologies include: a stepped frequency conversion start-up program for the dryer starting at 5Hz and increasing by 5Hz every 10 seconds; a differentiated coal feed control strategy and steam temperature rise curve configured according to the shutdown time; maintaining a stable micro-negative pressure in the system through air-coal linkage control; using flue gas replacement control to keep the oxygen content below the safety threshold; and pre-setting fully automatic operating parameters for the condensate system. This invention effectively solves the technical difficulties in traditional start-up processes, achieving a stable startup with no dust emission, low equipment impact, and compliance with explosion-proof specifications, resulting in significant safety, environmental, and economic benefits.

The present invention discloses a spindle system of a multi-wire cutting machine and a synchronous control method thereof. The multi-wire cutting machine includes three spindles and three active rollers. The three spindles are driven to rotate by three driving motors respectively, and the three active rollers are respectively installed on the three spindles; the driving motors are all servo motors, which can control the rotation speed of the spindles respectively and can feedback the torque of the spindles; the spindle synchronous control method of the multi-wire cutting machine: compare the torques fed back by the three spindles, when the torque fed back by one of the spindles is too large, adjust the rotation speeds of the other two spindles, the torques fed back by the three spindles tend to be consistent, and the peripheral line speeds of the three active rollers tend to be consistent. In the present invention, the cutting line adopts multi-spindle drive, which can evenly distribute the loads of each spindle, keep the axis speeds of each spindle consistent, and keep the equipment able to operate continuously and stably.

The present invention relates to an iron-based catalyst, a preparation method thereof, and an application thereof in the treatment of organic waste gas by heterogeneous catalytic oxidation. The iron-based catalyst comprises a MnO2 solid carrier and a catalyst active component loaded in the MnO2 solid carrier; the catalyst active component comprises Ag and Fe. The catalyst active component uses a metal salt solution as a precursor substance and is loaded on a carrier by an impregnation method. The catalyst of the present invention solves the problems existing in the existing commercial iron-based catalysts for heterogeneous catalytic oxidation, such as easy loss of iron ions, easy imbalance of catalyst component ratios, low catalyst activity at room temperature, and easy agglomeration of the catalyst. It can be applied to the scenario of heterogeneous catalytic oxidation treatment of organic waste gas for a long time.

This invention relates to the field of camera technology and discloses a continuously adjustable gimbal including a swashplate dynamic balancing assembly. The swashplate dynamic balancing assembly includes a stator, a rotor, a swashplate assembly, and an angle adjustment mechanism. The rotor is disposed within the cavity of the stator and can rotate within the stator. The swashplate assembly includes a swashplate, a universal joint slide, and an elastic element. An eccentric hole is provided within the stator, and the elastic element is disposed within the eccentric hole. The movable end of the elastic element is connected to the universal joint slide, and the bottom surface of the universal joint slide abuts against the surface of the swashplate. The swashplate and the rotor's rotational end face form a certain angle. The rotor's rotation drives the universal joint slide to perform circular motion along the swashplate surface. The distance between the universal joint slide and the rotor's rotational end face gradually decreases, compressing the elastic element. The reverse force of the elastic element, combined with the eccentric distance of the elastic element, provides a reverse torque, maintaining dynamic balance during rotor rotation. Furthermore, applying this swashplate dynamic balancing assembly to the pitch adjustment of a gimbal can achieve dynamic balance during the pitch adjustment process, providing a balanced effect with stepless adjustment and flexible and convenient operation.

The present application relates to a kind of electromagnetic underwater acoustic transducers, including shell, it is arranged in liquid-filled pipeline;Displacement amplifier module is arranged in shell, displacement amplifier module includes drive panel, oil cylinder and radiation panel, radiation panel is retractably arranged below oil cylinder, radiation panel side and liquid in liquid-filled pipeline contact, drive panel is retractably arranged above oil cylinder;Water pressure balancer module is arranged above drive panel;Electromagnetic actuator module is arranged in shell and is outside water pressure balancer module.The present application passes through water pressure balancer module and transmits the hydraulic pressure outside shell to drive panel, so that the drive panel and radiation panel on both sides of oil cylinder keep hydraulic balance, in through electromagnetic actuator module drive keep hydraulic balance after the drive panel and radiation panel movement, make radiation panel emit amplitude opposite, phase same acoustic wave to offset noise, so that transducer can eliminate sound in the pipeline of greater pressure.

The utility model relates to the technical field of balance mechanisms, in particular to a tension dynamic balance mechanism in the non-setting adhesive label unwinding process. In order to solve the problem that the quality of finished products is affected due to wrinkles generated when materials pass through a guide roller due to unstable tension, the following technical scheme is provided: the label tape tension adjusting device comprises a bottom plate, a tape pressing assembly in contact with a label tape, and an adjusting mechanism for driving the tape pressing assembly to adjust the tension of the label tape; the dynamic sensing assembly is used for controlling the belt pressing assembly to adjust, and the adjusting mechanism is connected with the belt pressing assembly through the dynamic sensing assembly. According to the utility model, the tension can be automatically adjusted in the unwinding process of the label tape, and the dynamic balance of the tension is ensured, so that the label tape is prevented from being damaged in the unwinding process, and the product quality is improved.

The application discloses a kind of balance valves, including valve body, deformable diaphragm, first opening, second opening and greater than.Wherein, valve body has cavity inside;Deformable diaphragm is arranged in cavity, and it is divided into first sub-cavity and second sub-cavity;First opening is arranged in valve body, for communicating first sub-cavity with external environment;Second opening is arranged in valve body, for communicating second sub-cavity with external environment;Interface is arranged in valve body, for communicating second sub-cavity with external load device.The deformable diaphragm in the balance valve of the application can be deformed based on the pressure difference between external environment and the inside of external load device, so as to maintain the dynamic balance of pressure inside and outside load device.

This invention discloses a method for configuring the number of charging piles based on big data analysis, belonging to the field of smart energy management technology. The method includes the following steps: collecting traffic flow data, vehicle charging record data, power grid load curve data, and meteorological time data; uniformly numbering the timestamps of all data to generate a time misalignment sensitive list; and comparing data from different sources at minute-level time intervals based on the time misalignment sensitive list, calculating the offset position of adjacent data in the time series, and forming a rhythm superposition contact point table. This invention achieves time unification of multi-source data and elimination of false peaks by establishing a time misalignment sensitive list, a rhythm superposition contact point table, and a false peak identification index, thereby improving the accuracy and spatial matching of charging pile configuration. Furthermore, by combining a high-mismatch area list and a dynamic sampling control mechanism, it performs quota rollback and optimization adjustments based on real-time traffic and charging demand, achieving intelligent and dynamic balance in charging pile configuration.

The utility model discloses a repairing structure for a damaged auxiliary lattice of a super-large-diameter steel cylinder cofferdam, which comprises two steel cylinder main lattices, a landside arc steel plate auxiliary lattice connected between the landsides of the two steel cylinder main lattices, a seaside arc steel plate auxiliary lattice connected between the seasides of the two steel cylinder main lattices, an inner retention wall, an outer retention wall and a water stop wall, a sand bag body and blow-filling sand. The inner retention wall is arranged close to the sea side of the landside arc steel plate secondary grid; the outer retention wall is arranged close to the land side of the seaside arc steel plate secondary grid; the water stopping wall is arranged in a seabed mud surface on the sea side of the outer water retaining wall; the sand bag bodies are stacked on a seabed mud surface in an area defined by the seaside of the outer retention wall and the seaside arc steel plate auxiliary grids; the hydraulic reclamation sand is arranged on the seabed mud surface in the area defined by the two steel cylinder main grids, the inner water retaining wall and the outer water retaining wall. According to the utility model, the auxiliary grids on the sea and land sides can be simultaneously repaired, and the problems that the cofferdam auxiliary grids are damaged due to extremely severe weather, so that a water stop cofferdam cannot be formed, and the subsequent land forming process cannot be carried out can be solved.

The invention discloses a porous polyurethane skeleton interface evaporator based on MXene / carbon black synergistic photothermal conversion and a preparation method and application thereof.The method comprises the steps that a Ti3AlC2 precursor is selectively etched through a lithium salt-acid system, and MXene powder is prepared; polyvinylpyrrolidone is dissolved in distilled water to form a dispersion medium, carbon black and MXene powder are added into the dispersion medium for uniform dispersion, and a composite photo-thermal dispersion system is constructed; then, polyurethane foam is immersed in the dispersion system, through adsorption and drying treatment, the photo-thermal material is stably loaded on the surface of a foam framework and in internal pore channels, and therefore the composite photo-thermal evaporator with the high light absorption capacity and the efficient water transportation performance is obtained. The preparation method is simple in technological process, wide in raw material source, low in cost and environmentally friendly, and the prepared photo-thermal evaporator is suitable for high-salinity wastewater treatment and has a good application prospect in the field of water-salt-energy synergistic utilization.