306 results about "Water exchange" patented technology

The invention provides an ecological circulation barrel-in-barrel culture data acquisition method and system, and relates to the technical field of intelligent control, and the method comprises the steps: carrying out the feature extraction of a historical data flow through a multivariable coupling analysis model, carrying out the mode matching through a preset environment threshold interval and a culture environment state matrix, and obtaining a culture environment state matrix; generating a water quality health degree evaluation index and an ecological imbalance early warning signal; and analyzing the water quality health degree evaluation index and the ecological imbalance early warning signal based on a fuzzy control algorithm, dynamically calculating a final feeding amount curve and a water change intensity function, and generating a regulation and control instruction set containing the feeding frequency, the bait particle size and the water pump rotating speed. According to the invention, real-time evaluation and accurate intervention of the water quality health state can be realized.

The invention relates to an ecological irrigation area hydrological connectivity assessment method, device and equipment and a medium. According to the method, a monitoring data set is generated by collecting time sequence data of parameters such as flow; analyzing a dynamic water quantity exchange relation between water bodies based on the time sequence data, and generating a water quantity exchange relation matrix; constructing an irrigation area hydrological network topology model by using the matrix; key connection nodes are identified through a node centrality calculation and threshold screening mechanism, and a hierarchical node importance list is generated; performing connectivity quantitative analysis in combination with the topological model and the node list, and outputting a three-dimensional evaluation vector; generating a regulation and control strategy based on an evaluation result, and outputting a priority regulation and control sequence of the key nodes; and the monitoring network and the model are dynamically optimized by regulating and controlling feedback data. Therefore, the dynamic characteristics of the hydrological network are captured, the accuracy of key node identification is improved, a scientific basis is provided for optimization design and risk early warning of an irrigation area network, and meanwhile, the reliability and adaptability of overall evaluation are improved through a closed-loop feedback mechanism.

The present application relates to the technical field of resource assessment, and particularly relates to a system and method for accurately assessing water resource quantity in an inland river basin, comprising the following steps: arranging a multi-modal sensor network in the inland river basin, collecting hydrological characteristic data of the inland river and surrounding wetlands, extracting implicit water exchange characteristic indexes between the inland river and the wetlands, including wetland groundwater recharge, inland river boundary seepage rate and seasonal water exchange amplitude; based on the implicit water exchange characteristic indexes between the inland river and the wetlands, establishing an inland river-wetland implicit water exchange dynamic model; embedding the inland river-wetland implicit water exchange dynamic model into the water cycle system of the inland river basin, and comprehensively calculating the surface water resource quantity and the groundwater resource quantity in the basin. Through the implicit water exchange between the wetlands and the inland river, the present application eliminates the wetland consumption part, so that the water resource quantity calculation is more accurate.

A charging and refuelling station for an autonomous cleaning robot including; a charging mechanism including a sprung mount resiliently supported on the charging and refuelling station, a swivel mount pivotally supported on the sprung mount, the swivel mount supporting contact plates for contacting charging contact plates of the autonomous cleaning robot when docked at the station; and a water exchange system including a tap for fresh water refilling of the autonomous cleaning robot, and a draining system including a drain tank for receiving water draining from the autonomous cleaning robot.

The invention discloses a breathable plant leaf biomimetic material with antifouling, self-cleaning and spectrum simulation properties and a preparation method of the breathable plant leaf biomimetic material. The breathable plant leaf biomimetic material can be applied to a base material through a two-step coating method. The first layer is a mesophyll-like porous dual-network hydrogel structure, hyperspectral pigment and moisture absorption salt are dispersed in the first layer, spectral characteristics of plant leaves in visible light and near infrared bands are simulated, and a water transpiration function controlled by plant pores is reproduced through a pore structure and a salt medium, so that stable spectral response and dynamic water exchange are realized; and the second layer is a leaf-skin-imitated coating, and has long-term stable antifouling and self-cleaning characteristics through a liquid-like super-smooth hydrophobic surface structure. The plant leaf spectrum simulation coating has anti-mud and hydrophobic properties, can still keep an excellent plant leaf spectrum simulation effect after being washed by rainwater, and can realize high-weather-resistance spectrum simulation.

The invention belongs to the technical field of inter-basin underground water circulation flux estimation, and particularly relates to an infiltration and lateral inflow separated underground water flux remote sensing estimation method and system. The method includes: acquiring a multi-source remote sensing data set of a research area; performing partition correction on evapotranspiration data of different land utilization type areas in the research area; the method comprises the following steps: dividing a research region into equal-area units, identifying a vertical dominant unit and a lateral dominant unit, and further determining a cross-basin underground water exchange zone; and solving a local vertical infiltration amount by using the vertical dominant unit and interpolating to form a background field, establishing a combined equation set which takes the background field as an initial value and takes the dynamic characteristic parameters of the underground water as additional constraints for the lateral dominant unit, solving to obtain an external lateral inflow amount, and further obtaining a cross-basin underground water circulation flux. According to the method, the vertical dominant unit and the lateral dominant unit are identified, and the cross-basin groundwater circulation flux is quantitatively estimated.

The invention relates to the technical field of intelligent agricultural intelligent irrigation control, and discloses an intelligent irrigation analysis control system based on a crop growth period. The system comprises a crop image sequence, soil humidity profile data and a regional meteorological sequence. And the data analysis module is used for performing multi-stage growth state interpretation on the image sequence, generating a crop structure state profile in each growth period, performing vertical moisture exchange identification on the soil humidity data, and generating a root zone moisture dynamic map. And the habitat mapping and stress evaluation module synchronously executes habitat adaptability mapping and moisture stress risk mapping. And the irrigation decision module corrects the habitat mapping result according to the stress evaluation result and generates an irrigation decision profile. And the control instruction generation module generates a partition valve control instruction in combination with the decision profile and the alternate irrigation rule. According to the invention, deep fusion analysis of the crop growth state, the root zone moisture and the meteorological environment is realized, and the irrigation decision accuracy and the water resource utilization efficiency are improved.

The invention provides an urban inland inundation simulation method and a risk early-warning risk-avoiding system based on coupling of a one-dimensional model and a two-dimensional model. The method comprises the following steps: performing one-dimensional and two-dimensional hydrodynamic simulation on urban inland inundation rainstorm and flood based on SWMM and OpenFOAM; establishing a water exchange interface between the first model and the second model, dynamically calculating exchange flow according to a water level relationship, and establishing and executing a two-dimensional model coupling mechanism; based on a coupling mechanism, running simulation and outputting data and results; building an urban model based on a Cesium platform, and inputting flood routing data obtained based on model coupling to realize visual simulation of urban inland inundation flood routing; a risk early-warning risk-avoiding system is built on the basis of a visual result and in combination with emergency management theoretical knowledge and comprises a waterlogging simulation module, an early-warning module, a risk zoning module and a risk-avoiding transfer module; risk area division of a target area is realized based on double factors of water depth and flow velocity, and a corresponding optimal risk avoiding route is planned based on a Dijkstra algorithm.

The invention discloses a clear water circulation intelligent scheduling method and system based on water environment situation driving, and the method comprises the steps: carrying out the automatic model configuration based on a multi-mode automatic selection algorithm driven by the water environment situation, and driving the running water scheduling simulation; online simulation calculation of clear water circulation forecasting scheduling and forecasting and early warning of clear water circulation are achieved; a clear water loop scheduling decision-making platform is established by combining a WebGL visualization technology with a WebGis technology, and refined simulation rehearsal of various scheduling scenes on a three-dimensional terrain is realized; through a clear water circulation multi-target scheduling decision scheme optimization method, according to a clear water circulation scheduling result, optimization of a plurality of scheduling schemes is realized, factors such as water change amount, engineering operation time, gate water discharge amount, pump station water diversion amount and the like are brought into an evaluation index system, and a clear water circulation multi-target scheduling decision scheme which not only meets the clear water circulation requirement but also meets the water circulation requirement is optimized. The scheduling time can be saved to the greatest extent, the cost is reduced, and the experience judgment error of a scheduling decision maker is reduced.

The invention discloses a marine ecological regulation and control system which comprises a lifting type pile leg, an ecological control cabin, a supporting truss and a hydraulic regulation and control supporting arm. The pile legs are fixed to the seabed, support the system and are adjustable in height. The supporting trusses are symmetrically distributed, are connected with the ecological control cabin and the pile legs and are provided with water inlets and water outlets; the hydraulic regulation and control support arm is connected with the lower end of the pile leg and extends to the near seabed to realize full-water-layer regulation and control. The system is provided with a power supply device and a light guide system, and the light guide system conveys natural light to an underwater irradiation probe through a light guide plate, a sunlight collector and an optical fiber to realize deepwater light supplement. The circulating water system is composed of a water pump and a pipeline and drives double-layer water to circulate. The control system integrates monitoring and intelligent regulation and control functions, and links all parts to operate. According to the invention, the whole water layer marine ecological protection and regulation effect from shallow water circulation to deep ecological restoration is improved, the illumination compensation, water exchange and energy self-sufficiency capabilities are enhanced, and the automation, intelligence and long-term operation level of the system are improved.

The invention provides an arid region salt marsh grassland wetland water supplement regulation and control method and a related device, and the method comprises the steps: determining the ecological water demand and deficiency corresponding to a target region according to the wetland vegetation evapotranspiration, precipitation and underground water-soil water exchange flux of the target region in a target time period, the target area is any area in the salt marsh grassland wetland in the arid area; determining a water quantity adaptive gap corresponding to the target area according to the earth surface water supplementing quantity and the ecological water demand deficit quantity of the target area in the target time period; and performing water supplementing regulation and control on the target area according to the water quantity adaptive gap. According to the accurate evaluation result of the water volume adaptation gap, a refined drip irrigation technology is adopted to carry out ecological water supplementation on the salt marsh grassland wetland, the requirements of plants for water in all stages of the whole life cycle are ensured, and the stability and adaptability of a wetland ecological system are improved; and multi-target collaborative development of hydrological communication, biodiversity improvement, habitat optimization and the like of the wetland ecosystem is realized.

The invention discloses a karst area surface water and underground water exchange capacity inversion method based on a temperature tracing method. The method comprises the following steps: collecting temperature time sequence data of different horizontal positions and different riverbed depths of karst area surface water / river water and riverbed profiles; the method comprises the following steps: directly utilizing observed surface water temperature data as boundary conditions of a temperature tracing model, and constructing a new two-dimensional heat transfer mathematical model for describing a temperature tracing process of a karst area to be measured; and exporting an analytical solution of the constructed mathematical model by adopting a Green function method, and coupling a particle swarm optimization algorithm, so that the limitation that a traditional temperature tracing model can only invert the vertical exchange capacity is broken, and automatic inversion of the two-dimensional surface water and underground water exchange capacity of the karst area is realized. A new technical means is provided for research on interaction of surface water and underground water in the karst area and water circulation in the karst area, and the method can be widely applied to the fields of numerical simulation of a karst underground water system, water resource evaluation, ecological environment research and the like.

The invention discloses a cofferdam pond gate control system based on the Internet of Things, and belongs to the technical field of gate control, and the cofferdam pond gate control system specifically comprises the steps that a data acquisition module obtains satellite tide data and meteorological monitoring data through an Internet of Things control center; the tide level prediction module inputs the two types of data into a multi-model fusion mechanism, integrates an astronomical tide model based on gravity calculation and a meteorological tide model based on wind pressure coupling, and generates a comprehensive tide level curve according to dynamic weight fusion; the height analysis module determines the upper limit of the opening height in the flood period by taking the real-time tide level as the reference flushing retarding interval according to the comprehensive tide level curve, and dynamically adjusts the theoretical opening height of the water changing port in combination with the water head rate in the ebb period; the gate control module generates a gate lifting instruction and issues the gate lifting instruction to the driving unit through the Internet of Things to control the sectional type sealing plate to act, and it is ensured that the error between the actual opening height and the theoretical value is within the preset range; according to the invention, environment dynamic response of tide regulation and control is realized.

The invention relates to the field of fish tank cleaning, in particular discloses a water exchanger. The water exchanger comprises a pressing balloon, a switch valve, a communicating pipe, a connecting pipe, a cleaning brush head and a water outlet joint. The cleaning brush head is equipped with multiple cleaning bristles and water inlet holes. Through the invention, the user can use one hand to press the pressing balloon to absorb water and rotate the switch valve to adjust the size of the water outlet channel and control the water flow rate. The user can use his spare hand to assist with water absorption or handle emergencies. Therefore, the use of the invention is more flexible and convenient.

The invention discloses a space remote sensing image analysis method for detecting surface water and underground water exchange in a river region based on surface temperature, and belongs to the field of remote sensing detection surface temperature anomaly analysis. According to the method, background field construction is carried out on pixels in a space by combining single-scene high-resolution surface temperature data and land cover classification data, and temperature thermal anomaly of a river main stream is extracted by adopting an adjacent pixel temperature anomaly analysis method, namely, the temperature thermal anomaly of the river main stream is extracted by analyzing subtle change of surface temperature in a remote sensing image; and identifying abnormal pixels which are obviously different from the temperature characteristics of the surrounding area. The abnormal pixels often correspond to areas where surface water and underground water exchange is active, such as permeable zones, spring water exposure points and the like. The method can be applied to drainage basin water resource management and ecological protection, and the conversion path and intensity between surface water and underground water can be deduced by further analyzing and processing the abnormal pixels extracted by the method and combining background information such as geology and hydrology.

The invention provides a stable seawater environment monitoring device based on multi-parameter measurement, relates to the technical field of marine environment multi-parameter monitoring, and aims to solve the problems of small underwater measurement data volume, measurement accuracy and seawater sample timeliness. A seawater measurement group I is used for monitoring underwater salinity, temperature, dissolved oxygen, pH, turbidity and chlorophyll a; the second seawater measuring set monitors underwater depth and ocean current, a servo motor is installed on the inner side of the counterweight well, a seawater environment measuring assembly is installed at the lower end of the servo motor, and a cleaning and water changing assembly is installed in the middle of the seawater environment measuring assembly. Through the sound wave emission technology, seawater depth change and ocean current motion data can be accurately captured in real time, the blank of lack of the two key parameters in traditional monitoring is effectively filled up, meanwhile, the cleaning and water changing assembly not only filters biological seedlings from entering the inner side of the counterweight well, but also cleans the outer side of the seawater environment measuring assembly, and the water quality is improved. And the measured data is not influenced by attachments.

The utility model discloses an intelligent water meter anti-freezing structure which comprises an intelligent water meter body, a base is fixedly installed on the top of the intelligent water meter body, a clamping groove is formed in the top of the base, a protective cover shell matched with the clamping groove is arranged in the clamping groove in an inserted mode, a cavity is formed in the protective cover shell, and an electric heating wire is arranged in the cavity. A plurality of heat conduction fins are symmetrically and fixedly installed on the sides, close to each other, of the cavities, one ends of the heat conduction fins penetrate out of the cavities and are inserted into the protective cover shell, and a temperature sensor is fixedly installed on the top side of the interior of the protective cover shell; the base and the protective cover shell are arranged at the top of the intelligent water meter body for primary heat preservation, the cavity is formed in the protective cover shell, water in the cavity is heated through the electric heating wire, the heated water exchanges heat with air in the protective cover shell through the heat conduction fins, and the heat exchange efficiency is improved. Therefore, the phenomenon that the glass and the display part of the intelligent water meter main body are frozen to be damaged is avoided.

The application relates to the technical field of phase change material preparation, in particular to a heterocyclic aramid phase change heat storage film and a preparation method thereof. After low-temperature polymerization of heterocyclic aramid fibers is completed, the phase change material is coated in situ, an oil-in-oil emulsion is obtained, water exchange is directly carried out, and after drying, a heterocyclic aramid-based phase change film is obtained. The film is dense, and the coating effect is good. Since the prepared phase change film is an integral film material, the phase change film can be directly applied, the processes such as intermediate drying and resolubilization are avoided, the whole process is simple and efficient, the cycle is short, high-end equipment is not depended on, the production cost is low, the coating density is high, the phase change material can be prevented from leaking during phase change, the phase change film has the properties of flame retardation, temperature resistance, excellent mechanical strength and excellent ultraviolet shielding and aging resistance, and the problems of a complicated preparation process, harsh conditions and high cost of the existing phase change heat storage film are solved.

The present invention describes a process for producing a food product, more specifically a ready-to-eat instant rice block that can be reconstituted with a uniquely crispy and sensorially appealing texture in a reduced preparation time, either by conventional cooking or microwave heating. The present process comprises the steps of dosing the rice grains into individual portions; continuous cooking in a two-compartment tunnel with constant water exchange; block molding and compaction; dehydration by frying; and cooling and packaging.

The present invention relates to the technical field of automatic water exchange for aquaculture devices, and more specifically, to an automatic water exchange device suitable for leech aquaculture, comprising a breeding box, wherein a grid and a pair of touch switches are provided inside the breeding box. The breeding box is also provided with a drive device and a drainage mechanism, wherein the drive device comprises a push plate that moves inside the breeding box and a pair of slide rods that move with the push plate. The automatic water exchange device suitable for leech aquaculture accurately controls water intake and drainage operations through the movement of the push plate, and automatically discharges and replenishes aquaculture water by combining the siphon principle, thereby reducing the frequency of manual intervention. The meshing design of the slide rod and the transmission part synchronously drives the rotation of the rotating part during the water exchange process, and utilizes a scraper to automatically scrape dirt intercepted by the filter into a slag discharge trough, effectively preventing filter blockage and maintaining water quality cleanliness, thereby achieving the coordinated operation of water exchange and dirt cleaning, and significantly improving the management efficiency of the leech aquaculture environment.

The invention relates to the technical field of vacuum heat treatment, in particular to a vacuum heat treatment furnace rapid cooling system and a vacuum furnace, comprising a driving pump, a liquid metal pipeline, an in-furnace heat exchanger, liquid metal, an out-furnace heat exchanger, a cooling water pipeline and cooling water; the in-furnace heat exchanger is positioned in the vacuum heat treatment furnace; the driving pump drives normal-temperature liquid metal, the liquid metal is conveyed into the in-furnace heat exchanger through the liquid metal pipeline, heat is absorbed, and high-temperature liquid metal is formed and reaches the out-furnace heat exchanger under driving of the driving pump; the cooling water pipeline conveys cooling water into the outside-furnace heat exchanger, the cooling water exchanges heat with the high-temperature liquid metal in the outside-furnace heat exchanger, and normal-temperature liquid metal is formed; through the special structural design, the characteristics of high heat conductivity and high boiling point of liquid metal can be utilized, the cooling rate of the rapid cooling system of the vacuum heat treatment furnace is increased, high pressure generated by high temperature in the system is reduced, and the probability that the rapid cooling system has safety accidents when water serves as a cooling medium to operate is reduced.

The invention provides a surface water-underground water integrated simulation method and system coupled with a glacier module, the method is based on an extended SWAT-GL model, rainfall, accumulated snow melt water and glacier melt water are jointly used as daily effective rainfall input, infiltration supply and river water level are transmitted to MODFLOW through a daily interface, and the water level of the MODFLOW is effectively simulated. And simulating underground water head change and surface water-underground water exchange capacity by utilizing a three-dimensional underground water flow equation, and feeding back a result to SWAT-GL river water balance, thereby realizing bidirectional dynamic coupling of the glacier-accumulated snow-surface-underground water whole process. The system breaks through the limitation that glacier mass balance and groundwater dynamics are difficult to depict synchronously in cold region simulation, can reveal a supply and regulation mechanism of glacier melt water to a groundwater system under the driving of climate change under a fine time scale, and remarkably improves the simulation capability of a cold region water circulation key process.

The invention discloses an adhesive compound with an adhesive property optimized based on metal hydroxides as well as a preparation method and application of the adhesive compound, and belongs to the technical field of biological adhesives. The present invention relates to an adhesive composition comprising an adhesive precursor consisting of a protein-polyphenol composite hydrogel and a hydrogen bond destructive small molecule compound capable of network reconstitution comprising beta-folding formation in aqueous phase grafting comprising a metal hydroxide having the characteristics of: (a) a hydration enthalpy value of from-1000 kJ / mol to-4000 kJ / mol; (b) a dissociation constant of from 6 pKa to 13.5 pKa; (c) a water exchange rate of 105 S <-1 > to 10 < 10 > S <-1 >. The adhesion compound can be networked to form an advanced structure when encountering water, not only can generate underwater lap joint shear strength of more than 1MPa, but also can tolerate underwater long-term soaking and temperature change from-196 DEG C to 100 DEG C, and meanwhile, the adhesion compound also has good biocompatibility, can meet the requirement of the environment in a human body on tissue adhesion safety, and has good application prospects. Stability suitable for in vivo tissue repair and industrial applications is exhibited.

The invention relates to the technical field of sewage treatment equipment, and discloses a bipolar water machine based on a composite membrane exchange water treatment technology, which comprises a bottom frame, a working table arranged on the upper surface of the bottom frame, a clamping module fixedly connected to the upper surface of the working table, an electrodialysis module arranged on the upper surface of the working table, and a cleaning module arranged in the electrodialysis module, the cleaning module actively cleans sediments and impurities on the surface of a membrane, the filtering module achieves solution filtering and automatic backwashing, the gas collecting module collects hydrogen and oxygen, the hydrogen and the oxygen are introduced into the combustor to be combusted, and then sewage is heated; the problems of efficiency reduction caused by membrane pollution and insufficient treatment efficiency in a low-temperature environment in traditional equipment are solved by actively cleaning impurities on the surface of the membrane and optimizing temperature control and energy recovery, and the water treatment efficiency and quality are remarkably improved.

The utility model discloses a roller of circuit board horizontal processing equipment. A plurality of convex rollers and concave rollers are alternately arranged in sequence; the single side diameter of the concave roller is smaller than that of the convex roller; the diameter of the concave roller is 2 / 3 to 7 / 8 of that of the convex roller; the length of the concave roller is more than or equal to three times that of the convex roller; the convex roller wheels and the concave roller wheels which are small in height difference are arranged, the width between every two adjacent convex roller wheels is large, the convex roller wheels make contact with the plate face in a small area, the problem that foreign matter adheres to the plate face is solved, the concave roller wheels are large in diameter, impact of sprayed liquid medicine can be effectively blocked, meanwhile, a certain space is formed between the concave roller wheels and the surface of a to-be-machined plate, and the surface of the to-be-machined plate is protected. The whole structure prevents the problem that spraying liquid medicine is difficult to retain on the plate surface of the to-be-processed plate; the state that the liquid medicine can be retained but cannot be excessively retained can be formed, and the effect that the force of liquid medicine exchange is moderate is achieved.

The invention relates to the technical field of fishery equipment, and discloses a culture cabin capable of changing water based on ocean wave energy and a semi-submersible type sea-opening culture work ship, the culture cabin comprises a ship body, the culture cabin is arranged below a deck of the ship body, the culture cabin comprises a cabin, a sea-opening water changing opening is formed in the broadside of the cabin, and a water outlet pipeline communicated with a seabed water changing opening is arranged at the bottom of the cabin; and a first one-way valve for draining water outwards from the cabin is arranged on the water outlet pipeline, and when surges enter the cabin from the sea-opening water changing opening and generate pressure difference exceeding preset pressure, the first one-way valve is opened to conduct one-way water draining to the outside of the ship till the inner pressure difference and the outer pressure difference are the same, the cultivation work ship utilizes wave energy to drive water changing, energy consumption can be remarkably reduced, and water changing uniformity can be improved. The seawater quality can meet the culture requirement, and the operation cost of open-sea culture is reduced.

The invention discloses a temperature control system, a control method thereof and a security cabin, and belongs to the technical field of emergency refuge.The temperature control system comprises a cabin body cooling module, an in-cabin cooling module and a spraying module, the cabin body cooling module makes contact with a cabin body, so that cooling water exchanges heat with the cabin body, the temperature of the cabin body is reduced, and the in-cabin cooling module is arranged in the cabin body and used for cooling the cabin body. According to the temperature control system and the security cabin with the temperature control system, the cooling water and the space in the cabin are subjected to heat exchange so as to reduce the temperature in the cabin, the spraying module can spray the cooling water to the outside of the cabin body so as to reduce the environment temperature outside the cabin, the water tank is further arranged and used for continuously supplying water under the condition that external water supply is cut off, and the control method of the temperature control system and the security cabin with the temperature control system are provided. According to the temperature control system, temperature isolation of the inner space and the outer space of the cabin and effective cooling of the inner space and the outer space of the cabin can be achieved at the same time, it is guaranteed that the cabin and personnel in the cabin are in a safe state, and life safety and health of the personnel are effectively guaranteed.

The utility model relates to the technical field of LED modules, and discloses an LED module with a waterproof function, which comprises a mounting seat, an LED lamp body fixedly connected to the upper surface of the mounting seat, a protective cover sleeved on the upper surface of the mounting seat, and a sealing assembly arranged on the upper surface of the mounting seat. The protective cover is mounted on the upper surface of the mounting seat, so that the outer surface of the coaming is in contact with the inner wall of the fixing part, a clamping part arranged on the inner wall of the fixing part is clamped into a clamping groove formed in the outer surface of the coaming, connection between the mounting seat and the protective cover is tighter, and meanwhile water vapor can form condensate water on the outer surface of the fixing part; according to the LED lamp provided by the utility model, the condensate water exchanges heat with heat emitted by the LED lamp body, and the condensate water can slide down along with the inclined surface of the outer surface of the guide piece when being accumulated too much and is discharged from the through hole, so that the LED lamp body is subjected to excessive heat, and the service life is not influenced.

The invention relates to the technical field of aquaculture, in particular to an accurate regulation and control method for micropterus salmoides culture water quality. According to the micropterus salmoides culture water quality regulation and control method, a culture water body meets one or more of the following conditions: (1) adding photosynthetic bacteria into the culture water body every day, and controlling the final concentration of the photosynthetic bacteria in the water body to be 10 < 6 >-10 < 7 > CFU / mL; (2) adjusting the content of dissolved oxygen in the culture water body to 5.5-7.5 mg / L; (3) adjusting the temperature of the culture water to 26 + / -1 DEG C in the daytime and 23 + / -1 DEG C at night. The total nitrogen, total organic carbon and chemical oxygen demand can be obviously reduced through day and night temperature regulation and addition of photosynthetic bacteria, the water change demand is reduced, and the eutrophication risk is reduced; meanwhile, the specific growth rate (SGR) and the weight growth rate (WGH) are improved, the immune and antioxidant indexes are optimized, and the aeration energy consumption is reduced by controlling dissolved oxygen to be 7.0 mg / L.

The utility model discloses an integrated fry and spray cultivation system which comprises a system body, the system body comprises a culture pond and a water treatment pond, the water treatment pond is erected in the center of the culture pond, the water treatment pond comprises a bottom plate, a side retaining wall and a top guide plate which are arranged from bottom to top, and water passing holes are formed in the lower portion and the upper portion of the side retaining wall respectively; the periphery of the top guide plate is connected with the top of the side retaining wall, and the middle of the top guide plate is inverted-cone-shaped; and an aeration disc is arranged above the bottom plate of the water treatment tank. According to the utility model, a factory-like circulating water concept is adopted, water circulation power depends on a gas pushing and flow guiding mode, and the operation is simple; the area of a water passing hole for water exchange is large, so that on the premise of ensuring the water exchange capacity, the water flow rate is greatly reduced, and the problem of blockage of the escape-proof mesh is solved; the system is integrated, miniaturized and convenient to transport, install and move, the construction cost of a single set is low, the system can operate independently, multiple sets can operate in a combined mode, the flexibility of the system is improved, and the applicability of the system is improved.