33 results about "Saltwater intrusion" patented technology

A saltwater intrusion prevention system for use at an interface between a fresh water body and a saltwater body includes a water recovery subsystem for recovering fresh water from a fresh water body. A retention reservoir in fluid communication with the water recovery subsystem receives and redirects the recovered fresh water. A saltwater intrusion barrier subsystem in fluid communication with the retention reservoir is positioned at an interface of the fresh water body and the saltwater body. The saltwater intrusion barrier subsystem includes a plurality of submerged return discharge ports for vertically ejecting the recovered fresh water for providing hydraulic mounding zone, and a fine air bubbler header for creating a mixing zone. The hydraulic mounding zone and the mixing zone increase the density of the fresh water for offsetting saltwater from the saltwater body.

The invention discloses a water drive reservoir natural water invasion, water injection and production balance state determining method comprising the following steps: acquiring a reservoir average single-well fluid productivity index and a reservoir average single-well water injectivity index; acquiring the maximum bottom hole flowing pressure of the reservoir water injection well; determining the reservoir water injection rate, the reservoir water influx and the reservoir liquid production capacity; determining the relation of the natural water influx, water injection rate and liquid production capacity under the condition of production balance based on the principle of material balance; and drawing a water invasion, water injection and production balance curve based on the principle of material balance, and finding out the 'balance point' of the reservoir. According to the invention, the relational expression which must be met for the realization of stable output of a reservoir along with the increase in water content is calculated out, and a theoretical basis is laid for reservoir stable output analysis. The production pressure difference, average pumping well bottom hole flowing pressure and reservoir pressure level required for the realization of stable output of an instance reservoir in different water cut periods in the future under different well spacing densities and different injector-to-producer ratios are analyzed, and the result provides a technical support for efficient and reasonable development of water drive reservoirs.

A marine propulsion device includes an engine, a propeller, a drive shaft, an exhaust path, a water intrusion detecting portion and a recording portion. The drive shaft is configured to transmit driving force from the engine to the propeller. The exhaust path allows exhaust air from the engine to pass therethrough. The water intrusion detecting portion is configured to detect a water intrusion potential indicating a possibility of water intrusion into the engine through the exhaust path. The recording portion is configured to record a detection result of the water intrusion detecting portion.

The invention relates to the technical field of preventing seawater intrusion. For controlling the seawater intrusion of the confined aquifer, the technical scheme adopted in the present invention is: a numerical simulation method for controlling the seawater intrusion of the confined aquifer by the aeration method, comprising the following steps: Step 1: Establishing groundwater gas-liquid two-phase flow and solute transport The model, including basic governing equations and auxiliary equations, does not consider the influence of temperature on the system; Step 2: Model solution; Step 3: Model boundary conditions determination; Step 4: Model verification: using groundwater gas-liquid two-phase flow and solute transport The model simulates and analyzes the static balance of the confined aquifer under the combined action of salt and fresh water, and compares and verifies it with the calculation results of existing literature; Step 5: Analyze the effect of the aeration method on the control of seawater intrusion in the confined aquifer. The invention is mainly applied to prevent seawater intrusion.

Disclosed is a swimwear by which water intrusion via the chest can be prevented. Specifically disclosed is a swimwear having a neckline part, right and left armhole parts and a first water intrusion-preventing part, characterized in that said first water intrusion-preventing part is positioned so as to connect said right and left armhole parts, and said first water intrusion-preventing part increases the tensile strength at 10% elongation of the swimwear material at least by 0.2 N, compared with the case where the first water intrusion-preventing part is not provided.

The invention discloses a fully automatic floating platform integrating seawater desalination and irrigation and its application, and relates to the technical field of seawater desalination and irrigation energy saving and emission reduction, including a full passive solar distillation module, an irrigation module, a connection module and a buoyancy device; a full passive solar energy The distillation module includes a water tank, an automatic water replenishment evaporator, a collection tank, a daylighting plate, a condensation plate, and a baffle; the automatic water replenishment evaporator includes a board wall, a foam block, and a fiber cotton cloth. The end of the condensation plate away from the daylighting plate is provided with a heat conduction plate extending to the inside of the water tank ; The lower surface of the lighting board is coated with a transparent anti-fog coating; the irrigation module includes a water storage part filled with soil and hydrogel, and the mass-to-number ratio of soil and hydrogel is 10:1 to 2:1; the connection module Including chute, pipeline, buoyancy device including several floating blocks; used in seawater desalination, offshore planting, fully passive seawater evaporation, improving light energy utilization rate, seawater evaporation efficiency, preventing seawater backflow, convenient for later maintenance, and realizing fully automatic integration of floating platform change.

The invention relates to a predication based river water-source heat pump water intake control method and system for a seawater jacking area. The predication based river water-source heat pump water intake control method comprises the following steps: providing a river water-source heat pump water intake control system, and predicating time characteristic parameters of river water-source heat pumpoperation according to historical operation data of the river water-source heat pump water intake control system; obtaining river historical tide data, comparing and analyzing the river historical tide data with tide forecast data obtained by networking, and predicating specific time that seawater flows backwards and reaches a water intake position of a river water-source heat pump during flood tide every day; inputting the data into the system, utilizing a statistical regression analysis method for a machine learning method to intelligently train, and calculating the optimal dynamic water intake control method which corresponds to different time points after training. The river water-source heat pump water intake control system operates according to the dynamic water intake control method, can be ensured to stably extract fresh water from river flow in the seawater jacking action area throughout the year through dual control of large data predication and system real-time monitoring,and can realize long-term stable and reliable operation.

The invention provides a governing system for underground water subjected to seawater intrusion, and a construction method of the governing system. According to the conditions of geology, topography,an underground quaternary aquifer and the natural slope of the aquifer from the upstream part of an underground water area to a seawater intrusion water inlet section, a seawater-preventing dike is constructed at a seawater intrusion water inlet, and a plurality of automatic opening-closing valves are distributed on the seawater-preventing dike; and under the condition of the seawater normal waterlevel elevation or tidal wind wave water level elevation, the seawater-preventing dike can thoroughly block a seawater intrusion water inlet channel, thus seawater cannot invade the inner side of theseawater-preventing dike in an intrusion mode, and water on the inner side of the seawater-preventing dike utilizes natural hydraulic kinetic energy generated by upstream underground water of the underground water area through the downstream slope to break through valve plates of the automatic opening-closing valves to be discharged. According to the governing system, the self-cleaning function of a seawater intrusion area is achieved, thus the governing problem of the seawater intrusion area is solved, ecological self-restoration is achieved, the environment is protected, and the cost is saved.