WO2022134469A1

WO2022134469A1 - Deep seawater pumping device using evaporation

Info

Publication number: WO2022134469A1
Application number: PCT/CN2021/096767
Authority: WO
Inventors: 李强; 王凯甬; 舒明瑞; 王经纬; 李明阳; 张晓华; 郑修宇; 古锦韬
Original assignee: 清华大学深圳国际研究生院
Priority date: 2020-12-21
Filing date: 2021-05-28
Publication date: 2022-06-30
Also published as: CN112483476A

Abstract

A deep seawater pumping device using evaporation, comprising a buoyancy structure, a porous water-absorbing material-based surface evaporation body (1) provided on the buoyancy structure, a porous water-absorbing material-based lower water-absorbing body (4), and a deep-to-surface water-passing pipeline (6); the surface evaporation body (1) is provided above a sea surface (7) and comprises a suspending protrusion portion extending in a horizontal direction, the upper end of the lower water-absorbing body (4) is connected to the lower end of the surface evaporation body (1), the lower end of the lower water-absorbing body (4) is connected to an upper end opening of the deep-to-surface water-passing pipeline (6), and a lower end opening of the deep-to-surface water-passing pipeline (6) is in communication with a deep seawater region.

Description

A deep sea water pumping device utilizing evaporation

technical field

The present invention relates to seawater aquaculture, in particular to a deep seawater pumping device utilizing evaporation.

Background technique

Due to the existence of a stratified structure in the ocean, the water exchange between the surface seawater and the deep seawater in the ocean is relatively difficult. The surface seawater has a higher sunshine-rich temperature, a higher oxygen content, and a lower nutrient salt concentration. The main area where plants and other sea creatures live; the temperature of deep seawater is low and the oxygen content is low, but it is rich in nutrients such as nutrient salts. It is the living area of scallops, oysters, corals and other benthic organisms. Strong sunlight radiation in summer will cause the sea surface temperature to be too high, affecting the survival of fish and phytoplankton. A cooling method is needed to maintain the temperature of the sea surface water in a suitable range to ensure the safety of breeding. At the same time, the supply of nutrients in the surface seawater is generally lacking, while the nutrients in the deep seawater are excessive. Oxygen can be transported into deep seawater through air pumps and pipelines to increase the oxygen content in deep seawater, but this method has obvious disadvantages. The work of the impeller pump requires a long-term stable source of energy supply. The energy supply in the marine environment is The higher cost is also prone to failure, requiring higher labor maintenance costs and initial construction costs.

It should be noted that the information disclosed in the above Background section is only for understanding of the background of the application, and therefore may include information that does not form the prior art known to a person of ordinary skill in the art.

SUMMARY OF THE INVENTION

If a channel can be provided to lead the nutrients in the deep seawater to the sea surface, it will improve the ecological environment of the sea surface and increase the aquaculture production on the sea surface. However, there is currently no effective technical equipment that can directly transport deep seawater upwards to surface seawater for a long time.

The main purpose of the present invention is to solve the above technical problems and provide a deep sea water pumping device utilizing evaporation.

To achieve the above object, the present invention adopts the following technical solutions:

A deep sea water pumping device utilizing evaporation, comprising a buoyancy structure, a surface layer evaporating body arranged on the buoyancy structure, a lower water absorbing body and a deep-surface water channel, wherein the surface layer evaporating body is arranged above the sea surface and There is an overhang extending in the horizontal direction, the upper end of the lower water absorbing body is connected with the lower end of the surface evaporation body, the lower end of the lower water absorbing body is connected with the upper end opening of the deep-surface water channel, the The lower end opening of the deep-to-surface water passage is connected to the deep seawater area, and the evaporation of water on the surface evaporative body forms a local negative pressure in the deep-to-surface water passage, so that the deep seawater keeps transporting upward to the surface to evaporate At the same time as part of the deep seawater is evaporated, another part of the deep seawater forms water droplets at the overhang of the surface evaporation body and falls into the surface seawater.

further:

The surface evaporation body and the lower water absorption body are sponge materials.

The surface evaporation body is a surface evaporation blade spread out from the center to the periphery in a flat structure.

The surface evaporation leaves are mushroom-shaped with a top canopy.

The deep-surface-layer water-passing pipeline is a vertical through-pipe.

It also includes a water absorbing support connected between the surface layer evaporating body and the lower water absorbing body.

The water-absorbing support is a sponge material.

The buoyancy structure includes a sea surface buoy, and the sea surface buoy is fixed on the upper end of the deep-surface water channel.

Also included is an anchoring device by which the deep sea water pumping device is anchored on the seabed.

The anchoring device includes a cable affixed to the deep-to-surface water conduit.

The present invention has the following beneficial effects:

The invention provides a pump-suction device capable of long-term continuous directional transportation of deep seawater to the sea surface, the device can generate vertical seawater exchange, and can utilize the evaporation effect of solar energy and wind energy for a long time. Suction deep, nutrient-rich and cooler seawater, transport it to the sea surface, increase the nutrient concentration of the sea surface, and reduce the sea surface temperature; at the same time, it enhances the vertical convection of the seawater and increases the temperature and oxygen content of the deep seawater. , thus providing a stable transport channel for temperature exchange, oxygen content exchange and nutrient exchange between deep seawater and surface seawater.

By using the invention, the temperature of the surface seawater can be lowered, thereby reducing the adverse effects of the high sea surface temperature in summer on the cultured organisms in the surface seawater. It can increase the nutrient concentration of the surface seawater, thereby increasing the biomass in the surface seawater and improving the ecological environment of the sea surface; at the same time, it can enhance the vertical exchange of seawater, and also increase the temperature and oxygen content of the deep seawater to a certain extent. Thereby, a growth environment favorable for scallops, oysters and other deep sea creatures can be created, which is favorable for increasing production and improving their quality.

Description of drawings

FIG. 1 is a schematic structural diagram of a deep sea water pumping device according to an embodiment of the present invention.

Detailed ways

Embodiments of the present invention will be described in detail below. It should be emphasized that the following description is exemplary only, and is not intended to limit the scope of the invention and its application.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the connection can be used for fixing or for coupling or communication.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that The device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first", "second" may expressly or implicitly include one or more of that feature. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise expressly and specifically defined.

Referring to FIG. 1 , in one embodiment, a deep seawater pumping device utilizing evaporation includes a buoyancy structure, a surface layer evaporation body 1 arranged on the buoyancy structure, a lower water absorption body 4 and a deep-to-surface water passage The pipeline 6, the surface evaporation body 1 and the lower water absorption body 4 are porous water absorption materials, the surface evaporation body 1 is arranged above the sea surface 7 and has an overhang extending in the horizontal direction, and the upper end of the lower water absorption body 4 is connected to the water absorbing body. The lower end of the surface evaporation body 1 is connected, the lower end of the lower water absorbing body 4 is connected with the upper end opening of the deep-surface water channel 6, and the lower end opening of the deep-surface water channel 6 is connected to the deep sea area, so The evaporation of water on the surface evaporating body 1 forms a local negative pressure in the deep-surface water channel 6, so that the deep seawater keeps being transported upward to the surface evaporating body 1. While part of the deep seawater is evaporated, another A part of the deep seawater forms water droplets at the overhang of the surface evaporation body 1 and falls into the surface seawater.

According to the needs of practical applications, the surface evaporation body 1 generally has a giant size.

During its operation, the deep-surface water conduit 6 is always connected to the surface seawater and the deep seawater, and the lower water absorbing body 4 is always immersed in the seawater, so that the entire lower water absorbing body 4 is kept in a moist state, and the upper end of the lower water absorbing body 4 is connected to the surface layer evaporating body. The lower ends of 1 are directly connected, and solar energy and wind energy can drive the evaporation of water on the surface evaporating body 1, and form a local negative pressure in the deep-surface water-passing pipeline 6, so that the seawater in the pipeline 6 can be kept upwardly transported, and the deep seawater transportation can be realized. transported to the surface seawater. The surface layer evaporating body 1 is always saturated with water, and water droplets are formed at the overhang and fall into the surface layer seawater, thereby reducing the temperature of the surface layer seawater and increasing the content of nutrient salts. Since the temperature of the seawater in the deep-surface water passage 6 is lower than the temperature of the external seawater, the heat conduction through the pipe wall can also have a cooling effect on the surface seawater.

In a preferred embodiment, the surface evaporation body and the lower water absorption body are sponge materials. It should be understood that other porous water-absorbing materials may also be used and are not limited to sponge materials.

Referring to FIG. 1 , in a preferred embodiment, the surface evaporation body 1 is a surface evaporation blade spread out from the center to the periphery in a flat structure. In a more preferred embodiment, the surface evaporation blades are mushroom-shaped with a top canopy.

It should be understood that the surface layer evaporating body 1 is not limited to the above-mentioned preferred forms, as long as the structural forms that can effectively absorb water, evaporate and drip water to the sea surface are applicable to the present invention.

Referring to FIG. 1 , in a preferred embodiment, the deep-to-surface water conduit 6 is a vertical through conduit 6 . It should be understood that the vertical pipes 6 are not required, and other forms of pipes 6 capable of transporting water from the deep to the sea surface may also be used.

Referring to FIG. 1 , in a preferred embodiment, a water absorbing support 2 connected between the surface evaporation body 1 and the lower water absorbing body 4 is further included. The absorbent support 2 may be a sponge material. The water absorbing support member 2 may adopt a structural form with higher strength than the surface evaporation body 1 and the lower water absorption body 4 , so as to better support the surface evaporation body 1 .

The buoyancy structure includes a sea surface buoy 3 , and the sea surface buoy 3 is fixed on the upper end of the deep-surface water channel 6 . In addition, the buoyancy structure can also be directly fixed with the sponge structure.

In a preferred embodiment, the deep sea water pumping device further includes an anchoring device 5 , and the deep sea water pumping device is anchored on the seabed 8 through the anchoring device 5 .

The anchoring device 5 includes a cable fixed on the deep-surface water conduit 6 .

It should be understood that the anchoring device is to enable the deep sea water pumping device to work more stably and stably, and is not necessary for realizing the present invention.

The deep sea water pumping device of the embodiment of the present invention utilizes the evaporation of solar energy and wind energy, and can lift deep sea water to the sea surface for a long time. A single external energy source can be deployed in a wide range, which is suitable for large-scale applications.

The specific embodiments of the present invention are described below with further examples.

As shown in FIG. 1 , a deep sea water pumping device utilizing evaporation according to a specific embodiment includes surface evaporation blades, a water absorbing support 2, a sea surface float 3, a lower water absorbing body 4, an anchoring device 5, and a vertically penetrating deep layer. To the surface water pipeline 6. When it is working, the whole equipment is anchored by the sea surface buoy 3 and the anchoring device 5, and the pipeline 6 is always connected to the surface seawater and the deep seawater. The lower water absorbing body 4 is always immersed in seawater, so that the entire lower water absorbing body 4 is kept in a wet state. The upper end of the lower water absorbing body 4 is connected with the lower end of the surface evaporation blade through the water absorbing support 2 . Solar energy and wind energy can drive the evaporation of water on the surface evaporation blades, and a local negative pressure is formed in the tube, so that the seawater in the pipeline 6 can be transported upward, and the deep seawater can be transported to the surface seawater. Surface evaporation The leaves are always saturated with water, and water droplets are formed at the sharp edges of the leaves and fall into the surface seawater, thereby reducing the temperature of the surface seawater and increasing the content of nutrient salts. The temperature of the seawater in the pipeline 6 is lower than the temperature of the external seawater, and the heat conduction through the wall of the pipeline 6 can also have a cooling effect on the surface seawater.

The Background of the Invention section may contain background information about the problem or environment of the invention and is not necessarily a description of the prior art. Therefore, what is contained in the Background section is not an admission of prior art by the applicant.

The above content is a further detailed description of the present invention in conjunction with specific/preferred embodiments, and it cannot be considered that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art to which the present invention pertains, without departing from the concept of the present invention, they can also make several substitutions or modifications to the described embodiments, and these substitutions or modifications should be regarded as It belongs to the protection scope of the present invention. In the description of this specification, reference to the terms "one embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples" or the like is meant to be used in conjunction with the description A particular feature, structure, material, or characteristic described by an example or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other. Although the embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions and alterations can be made herein without departing from the scope of the patent application.

Claims

A deep sea water pumping device utilizing evaporation, which is characterized in that it comprises a buoyancy structure, a surface evaporation body based on a porous water-absorbing material, a lower water-absorbing body based on the porous water-absorbing material, and a deep-surface-layer communication body arranged on the buoyancy structure. Water pipeline, the surface evaporation body is arranged above the sea surface and has an overhang extending in the horizontal direction, the upper end of the lower water absorption body is connected with the lower end of the surface evaporation body, and the lower end of the lower water absorption body is connected to the water pipeline. The upper end opening of the deep-surface water-passing pipeline is connected, the lower-end opening of the deep-surface water-passing pipeline is connected to the deep sea area, and the evaporation of water on the surface-layer evaporating body forms a local negative in the deep-surface water-passing pipeline. pressure, so that the deep seawater keeps being transported upward to the surface evaporating body, while a part of the deep seawater is evaporated, another part of the deep seawater forms water droplets at the overhang of the surface evaporating body and falls into the surface seawater.
The deep sea water pumping device according to claim 1, wherein the surface evaporation body and the lower water absorption body are made of sponge material.
The deep sea water pumping device according to claim 1 or 2, wherein the surface evaporation body is a surface evaporation blade spread out from the center to the periphery in a flat structure.
The deep sea water pumping device according to claim 3, characterized in that, the surface evaporation blades are mushroom-shaped with a top canopy.
The deep sea water pumping device according to any one of claims 1 to 4, characterized in that, the deep-surface water-passing pipeline is a vertical through-pipe.
The deep sea water pumping device according to any one of claims 1 to 5, further comprising a water absorbing support connected between the surface evaporation body and the lower water absorbing body.
The deep sea water pumping device according to claim 6, wherein the water absorbing support is made of sponge material.
The deep sea water pumping device according to any one of claims 1 to 7, wherein the buoyancy structure comprises a sea surface buoy, and the sea surface buoy is fixed on the upper end of the deep-surface water channel.
The deep sea water pumping device according to any one of claims 1 to 8, further comprising an anchoring device, and the deep sea water pumping device is anchored on the seabed by the anchoring device.
The deep sea water pumping device according to claim 9, wherein the anchoring device comprises a cable fixed on the deep-surface water channel.