136 results about "Thermocline" patented technology

The present invention relates to a bottom-to-surface link system for an underwater pipe installed at great depth, the system comprising:firstly a vertical tower constituted by at least one float (5, 14) associated with an anchor system (6, 8, 16) and carrying at least one vertical riser (9, 15) suitable for going down to the sea bed (18); andsecondly at least one link pipe (4, 3) extending from said float (5, 14) to a surface support (1). According to the invention, said link pipe is a riser whose wall is constituted by a rigid steel tube, and said float (5, 14) is installed at a depth situated below the last thermocline (29).

A thermocline storage tank is presented, which includes a barrier member that floats between the two fluids stored at different temperatures, physically separating and insulating them. The floating barrier includes a number of design features that broaden its application scope, enabling it for use in fields like thermal storage systems of solar power plants.

The invention provides an outer cooling system with stored cold for a direct current converter valve and an operation method of the outer cooling system. The outer cooling system comprises an air cooler, a plate heat exchanger, a water chilling unit, a frequency fixed cold pump, a buffer tank, a thermocline type cold storage groove, a frequency conversion cold pump and a cooling water pump. The plate heat exchanger is divided into a hot side and a cold side. The outer cooling system with stored cold for the direct current converter valve is characterized in that at the hot side of the plate heat exchanger, a cooled device is connected with the air cooler, the plate heat exchanger and the cooling water pump in series so that a circulating loop can be formed; at the cold side of the plate heat exchanger, the thermocline type cold storage groove and the frequency conversion cold pump are connected in series so that a cold storage tank cold supply branch can be formed, the water chilling unit, the frequency fixed cold pump and the buffer tank are connected in series so that a water chilling unit cold supply branch can be formed, and the cold storage tank cold supply branch and the water chilling unit cold supply branch are connected with the plate heat exchanger in series after being connected in parallel so that a cold-side circulating cold supply loop can be formed. Compared with the prior art, the outer cooling system with stored cold for the direct current converter valve and the operation method of the outer cooling system have the advantages that the cold storage temperature difference range is wide, the high-temperature resistant capacity is achieved in summer, and the anti-freezing capacity is achieved through heat storage in winter.

Underwater power generation for an underwater vessel is provided when the vessel transits through an underwater thermocline. At least a portion of the shell of the vessel is made from a thermally conductive material. Thermo-to-electric energy converters are electrically coupled together with each converter having a first surface thermally coupled to the shell's inner surface. A phase change material is thermally coupled to each opposing second surface of the converters. The phase change material has a phase change temperature that is between the upper and lower temperature extremes of the underwater thermocline's temperature range. The converters generate electrical power as the underwater vessel transits through the underwater thermocline.

The invention belongs to the technical field of thermoelectricity and relates to a cogeneration unit with a heat storage device and a peak shaving method of the cogeneration unit. The cogeneration unit comprises a turbine, a heating network heater, the heat storage device and a heating network circulation water pump. A phase-change material thermocline heat storage tank and an adjusting system of the phase-change material thermocline heat storage tank are adopted in the heat storage device. The heat storage device is arranged behind the heating network heater, and part of discharged water of the heating network heater serves as a heat storage heat source. When the unit participates in peak shaving and the heat generating amount changes, the working state of the heat storage device is changed by opening and closing a valve. When the heat generating amount of the unit is large, heat is supplied through the heating network heater, and the heat storage device stores heat. When the heat generating amount is small, the heat storage device releases heat to replace part of extracted steam of the heating network heater to heat return water of a heating network, and after the return water is mixed with the discharged water of the heating network heater, the mixed water is sent to a heating station. It is ensured that the heating quality is not changed when the heat generating amount of the unit is changed, the capability of the cogeneration unit for participating in peak shaving of a power grid is improved, positive significance is achieved for absorption of renewable energy such as wind power, and the method is suitable for the cogeneration unit participating in peak shaving of the power grid.

The invention discloses a natural layering water cold accumulation device. The device comprises a cold accumulation trough, an upper high-temperature water pipe and a lower low-temperature water pipe communicated inside and outside the cold accumulation trough, an upper water distributor communicated with the upper high-temperature water pipe and provided with an upward water distributing nozzle, and a lower water distributor communicated with the lower low-temperature water pipe and provided with a downward water distributing nozzle. The natural layering water cold accumulation device is characterized in that the water distributing nozzles are provided with nozzle angles and flow deflectors arranged in the axial direction of the water distributors along the nozzle angles. The device reduces the thickness of a thermocline by 0.1 m and the practical water distributing height of the upper water distributor and the lower water distributor by 0.1 m respectively; and meanwhile, the device effectively increases the utilization rate of the capacity of a cold water accumulation trough and increases the effective cold accumulation height and effective cold release height of the cold water accumulation trough by 0.3 m, thereby realizing efficient cold accumulation and cold release.

Disclosed are a single-tank/double-tank combined heat accumulation system for solar thermal power generation, and a heat accumulation method of the single-tank/double-tank combined heat accumulation system. The single-tank/double-tank combined heat accumulation system for solar thermal power generation comprises a single-tank thermocline heat accumulation subsystem, a double-tank heat accumulation subsystem, connecting pipelines, valves and the like. The single-tank thermocline heat accumulation subsystem comprises a single thermocline storage tank which is filled with heat-accumulating medium and which is covered with an insulation layer, and the top and bottom of the storage tank are provided with opening passages respectively, used for allowing fluid to access the accumulation tank. The double-tank heat accumulation subsystem comprises a cold fluid storage tank and a hot fluid storage tank both covered with insulation layers, cold fluid and hot fluid are stored in the tanks respectively, and the tanks are provided with a cold fluid pump and a hot fluid pump respectively, and each tank is provided with a fluid inlet pipe. Operating modes of the single-tank/double-tank combined heat accumulation system for solar thermal power generation include radiation-fluctuation-free continuous heat accumulation in daytime, radiation-fluctuation alternate heat accumulation and discharge in daytime, continuous heat discharge after disappearance of radiation, and auxiliary heat release in system stoppage and before starting.

This invention is a heat pump double water circulating system of sea thermocline simulation test bed. It belongs to the field of ocean ship engineering technology. It includes water groove, compressor, condenser, temperature controlling expansion valve, evaporator, back water pump, flowmeter, cold water tank, cold water pump, hot water pump, globe valve, water compensating valve, frequency conversion controller, control element and thermometer. This invention uses heat pump double water circulating system, which makes water conveniently transfer heat and reach the needed temperature. The cold and hot water in the water tank is controlled within 0.1m/s-0.6m/s. The temperature of cold and hot water is controlled within 8deg.C-15deg.C. It stimulates the temperature distribution and flow state of sea thermocline under the control of human being. It can greatly save the water resource and electric energy.

A system for mapping a thermocline in a body of fluid includes a thermocline detection and monitoring module, a persistent data storage module; and a plurality of distributed sensors, including intelligent sensors, connected with the at least one thermocline detection and monitoring module and the persistent data storage module by one or more control-level programming and communication methods. The thennocline detection and monitoring module can monitor the thermocline at sampling intervals to collect and fuse measurement data from the plurality of sensors to capture thermocline changes as events, correlate measurement data and events, store measurement data in the persistent data storage module along with previously acquired measurement data for comparison and tracking, characterize the thermocline as a function of spatial location, depth, and time, create and maintain reports that describe the thermocline characteristics, status, trends, and provide multimodal notifications of events to different users.

An electronic fishing device for facilitating trolling a fish-catching element in water and a related system, method, and use, the fishing device including: a first sensing element for obtaining a first indication relating to water temperature, a second sensing element for obtaining a second indication relating to the depth of the device, a steering member for adjusting the depth of the device, a processing unit for controlling, via the first and/or second indication provided by the first and second sensing elements, the steering member so as to guide the device relative to at least one element selected from the group consisting of: the position of the thermocline layer, a predetermined depth, and a predetermined temperature. In addition to fishing the disclosed device may be utilized in marine or other underwater research.

The invention discloses simulating testing device and method for temperature difference-sediment coupling density current of a stratified reservoir. The device comprises a reservoir model, a buffering tank, a muddy water tank, a water draining tank, etc. The method comprises the steps of 1) switching on an air conditioner to control the temperature of water in the reservoir model through a condensing pipe, so as to form an epilimnion, a thermocline and an isothermal layer from top to bottom in a sequence; 2) preparing sand-containing muddy water with a certain concentration in the muddy water tank, uniformly agitating, measuring the temperature of water in the muddy water tank and the reservoir model, switching on the pump and adjusting the flow rate to reach a value as requirement, opening and adjusting a water outlet valve at a draining opening in the bottom part of the reservoir model at the same time to enable Q (input) to be equal to Q (output), and then starting to time; 3) selecting five sections at intervals of 50cm, 50cm, 50cm and 30cm from left to right along the horizontal direction of the reservoir model from the water outlet, arranging a sampling opening at every vertical interval of 5cm in each section, sampling at regular intervals, and measuring the temperature of water at different level of each section; 4) measuring the turbidity the water sample obtained in step (3), and analyzing the data.

The invention discloses a deepwater reservoir water temperature layering intelligent self-adjustment and improvement device and method. The deepwater reservoir water temperature layering intelligent self-adjustment and improvement device comprises a shell, an underwater position indicator, a depth measuring instrument, a density measuring instrument, a data processor and a varactor propelling device, wherein the underwater position indicator, the depth measuring instrument, the density measuring instrument, the data processor and the varactor propelling device are attached to the shell. The upper portion of the shell is in an ellipsoid streamline shape, the middle and lower portions of the shell are cylindrical and in smooth connection with the upper portion of the shell, a solid load bearing disc is embedded in the tail end of the shell, the outer circumference of the solid load bearing disc is sleeved with a swivel, and empennages are fixed to the outer sides of the swivel. The varactor propelling device comprises an air storage tank, a valve controller, a valve, an engine, a varactor propelling cabin, a hydraulic rod and a piston. According to the deepwater reservoir water temperature layering intelligent self-adjustment and improvement device, the position of a thermocline of a reservoir can be automatically determined according to the water body vertical density gradient, then the deepwater reservoir water temperature layering intelligent self-adjustment and improvement device can perform up-and-down reciprocating movement by changing the buoyancy of the deepwater reservoir water temperature layering intelligent self-adjustment and improvement device to promote water bodies above and below the thermocline to be mixed to break the thermocline, the water environment of the layering type reservoir is improved, and the deepwater reservoir water temperature layering intelligent self-adjustment and improvement device has the high practical value in the aspect of treating the water environment of the layering type reservoir.

The invention relates to an improved system for regulating and controlling the water environment of a deep water aquaculture pond. In a facility system for regulating and controlling the water quality of the deep water aquaculture pond, the side part of the deep water aquaculture pond (1) with a water depth of over three meters is vertically provided with a draw well (3) with the same depth as the pond (1); the bottom of the pond (1) is communicated with the draw well (3) through an intake pipe (2); water conveying equipment (4) is arranged on the upper port of the draw well (3); the outlet of the water conveying equipment (4) is communicated with the upper layer of the pond (1) through a water return pipe (5); the water conveying equipment (4) can also be communicated with the upper layer of the pond (1) through a water body treating facility and the water return pipe (5); the water conveying equipment (4) is a low-lift axial-flow pump or an aeration water elevator; and the water treating facility (6) is an artificial wetland or an aeration biochemical filter chamber. The system can break the thermocline of the deep water pond, improves, regulates and controls the aquaculture environment of the pond and has the characteristics of energy conservation, emission reduction, cycle, simple structure, convenient construction, easy maintenance and high popularization and application values and social and economic benefits.

The invention discloses a device and a method for destroying water temperature layering by internal waves generated by aeration induction in a layered lake reservoir. According to the device and method, a temperature controller is used for controlling starting and stopping an external air conditioner and accurately adjusting and controlling the temperature of water in a model reservoir, and further the water body at the bottom in the model reservoir is cooled by using an air-conditioning condensing pipe; meanwhile, an air compressor is used for conveying air to an air inlet of an aerator, and then conveying the air to an aeration chamber through diffusion holes of the aerator; when undissolved residual gas is gradually accumulated to the lower edge of a water sealing plate of the aeration chamber, gas in the aeration chamber can rapidly spill to an ascending barrel in the middle and carry the water body at the bottom to ascend; meanwhile, gas in the aeration chamber is accumulated again, and thus a periodic ascending water flow is formed in the ascending barrel; an outlet of the aerator is formed in a thermocline with temperature gradient, the water flow periodically flowing out from the outlet of the aerator can serve as an interference source which induces to generate internal waves in the model reservoir, and the water temperature layering can be efficiently destroyed by using the powerful mixing effect of the internal waves.

The present invention relates to a marine thermocline simulation system for testing underwater carrier. Said simulation system includes water channel, water tank, control/display unit, hot water circulating pump, electrically-controlled hot water pump, electrically-controlled cold water pump, temperature display, thermal couple A, flowmeter, frequency conversion controller, data-collecting unit, electroheater, cut-off valve A, cooling tower, cut-off valve B, overflow pipe, thermal couple B and cut-off valve C. Said invention also its working principle and concrete operation method.

The invention relates to a physical model for affecting a layered reservoir water temperature structure by silt carrying flow and an experimental method, and belongs to the technical field of water environment research in water resource and hydropower engineering. According to the method, the influence on the vertical water temperature of a reservoir by the silt carrying flow can be simulated in alaboratory by controlling the inflow sand content, water temperature and initial vertical water temperature distribution of environmental water. A PIV two-dimensional flow field measuring device is adopted to effectively capture the silt carrying flow, density current forward flow field distribution is formed, and important flow field verifying data are provided for model verification of numerical simulation. Quartz sand is adopted to simulate suspended sediments in the silt carrying flow in testing, and the phenomenon that the silt carrying flow forms bottom density currents and inter-layerdensity currents to influence the water temperature structure is successfully simulated. An electrical heating bar is adopted in a heating device for heating at a water temperature thermocline position, the heating speed is higher compared with that of an existing lamplight heating mode, the thermocline position can be controlled conveniently, and the initial temperature field can be controlled more accurately.

The invention provides an actual measurement method of an ecological regulation and control range of an artificial fish reef area. The actual measurement method is used for representing flow field regulation and control and material conveying ranges of the artificial fish reef area in a marine ranching by using the water temperature difference phenomenon at a seasonal thermocline layer, namely a surface and bottom layer, existing in offshore sea areas of the subtropics from last spring to early autumn and through synchronously observing the vertical difference value of water temperature through a plurality of temperature chains. According to the actual measurement method, more than 9 stations carry out synchronous observation, wherein the synchronous observation time at every turn is more than 12.5h, observation is carried out during the grand tide, the moderate tide and the neap tide once respectively, and the regulation and control range of the artificial fish reef area is completely estimated. Approximately considered by the actual measurement method, the core putting area of the whole artificial fish reef cluster is a regulation and control range core area; stations are uniformly deployed in a marine area range regulated and controlled by the artificial fish reef area, the stations in which the temperature difference of the surface bottom layer is remarkably reduced is in a fish reef cluster regulation and control range, all stations in which the temperature different is remarkably reduced under the same tide condition are wired, and the area of closed region at the most peripheral wiring area is the artificial fish reel area regulation and control range under the tide condition.

The invention belongs to the technical field of improvement and restoration of reservoir water ecology, and relates to a method for improving water temperature stratification characteristic of a channel reservoir tributary bay by internal wave. During a water temperature stratification period of the tributary bay, fluctuation is generated from letdown flow, and water level of a reservoir fluctuates, so that tide is formed at the estuary of the tributary bay. Tide type inflow and outflow are formed between the bay and a trunk reservoir and have shear effect at the thermocline, so that tide interval wave is generated near the thermocline. Water of the thermocline flows reversely since the tide internal wave transmits along the thermocline, so that alternate flow is generated, water temperature fields are mixed, and then water temperature stratification is improved. Deepwater reservoir equal-density stratification water is aroused to generate internal wave under reservoir regulation, andthus natural underwater stirring movement is formed. The method is easy to implement, has influence to large-scope water, improves water dynamic strength remarkably, suppresses water temperature stratification and achieves the purposes of improving water ecological environments.

The invention belongs to the technical field of cool storage devices and particularly relates to a thermocline-free cool storage device which solves the problems that a thermocline of an existing cool storage device influences the effective volume for cool storage and the like. The thermocline-free cool storage device comprises a cool storage tank with a cavity. A first bag and a second bag are arranged in the cool storage tank. The whole cavity is filled with the first bag and the second bag. A cool storage liquid filling and releasing control mechanism is arranged between the first bag and the second bag and can enable cool storage liquid in the first bag to be injected into the second bag so as to control the first bag to shrink and the second bag to expand and enable cool storage liquid in the second bag to be injected into the first bag so as to control the second bag to shrink and the first bag to expand. The cool storage liquid filling and releasing control mechanism is connected with a terminal. The thermocline-free cool storage device has the advantages of being simple and reasonable in structure, good in cool storage effect, high in cool storage efficiency, capable of eliminating influence of the thermocline on the effective cool storage volume, uniform in temperature distribution, small in occupied area, convenient to use and low in operating cost.

The invention provides an autonomous depth-fixed suspension underwater acoustic remote-control transmitting device which comprises a main floating body, a buoyancy force adjusting device, a CTD (conductive Temperature Depth) sensor, a comprehensive controller, an encoder, a power amplifier, a transmitting transducer, an anti-collision sonar and a power manager, wherein the other components are installed in a watertight cabin in the main floating body; the CTD sensor is used for synchronously measuring depth and sound velocity and sending a measuring result to the comprehensive controller; the comprehensive controller is used for receiving the depth and sound velocity measured by the CTD sensor, judging whether thermocline exists according to the relationship that the sound velocity changes with the depth, selecting the transmitting depth of remote control signals according to a judgment result and sending a selecting result to the buoyancy force adjusting device, and is also used for controlling the encoder to generate remote control encoding signals. After the autonomous depth-fixed suspension underwater acoustic remote-control transmitting device is arranged, completely autonomous depth-fixed suspension operation can be achieved, appropriate remote control signal transmitting depth can be automatically selected, and thermocline under a severe hydrologic condition can be avoided so as to reduce sound transmission loss.

The invention discloses a water distribution system, which is arranged in an energy storage pool and mainly comprises a plurality of overflow type water distributors and a plurality of partitioning falling-curtains, wherein the overflow type water distributors are arranged on the top and the bottom of the pool; the partitioning falling-curtains are used for partitioning the pool into small ranges; and flow equalizing baffles are arranged in the overflow type water distributors. According to the scheme, the flow equalizing baffles are arranged in the water distributors, so that the water distribution area is increased and the water flow speed is reduced and is more uniform to achieve an effect that static stratification of pool water is realized according to water temperature; meanwhile, the water pool is partitioned into a plurality of small water distribution systems by the partitioning falling-curtains to form a similarly honeycomb structure, so that transverse interference of the water pool is greatly reduced, and meanwhile, the pool water is more finely controlled; the thickness of a thermocline is reduced as much as possible by the scheme, so that the space requirement of the water pool is greatly reduced; and the thickness of the thermocline is compressed to be 5-10 cm, so that the utilization efficiency of the energy storage pool is increased, the energy efficiency of the energy storage system is improved, and the effects of energy conservation and environmental friendliness are achieved.