Cultivation cabin capable of changing water based on ocean wave energy and semi-submersible type sea-skimming cultivation work ship

Abstract

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.

Description

Technical Field

[0001] The present invention relates to the technical field of fishery equipment, and in particular to an aquaculture cabin and a semi-submersible sea-going aquaculture vessel for exchanging water based on ocean wave energy. Background Art

[0002] Fish farming facilities include nearshore and offshore. Shore-based fish farming is widely used, but its main drawbacks are severe pollution and frequent red tides. Offshore aquaculture is currently mainly used in the Norwegian coast, and its main drawbacks are high construction and operating costs. Based on the above reasons, a Chinese patent publication with publication number CN106035169B discloses an offshore aquaculture facility based on a modified bulk cargo ship, comprising a hull, with several aquaculture cabins disposed beneath the deck of the hull. The aquaculture cabins are equipped with a water exchange system, with several water exchange holes circumferentially disposed in the aquaculture cabins connected to sea-going openings, a ballast pump water exchange port at the bottom of the aquaculture cabin, and an aeration device disposed on the sidewall of the aquaculture cabin, with the aeration outlet of the aeration device located at the bottom of the aquaculture cabin.

[0003] This patent uses ocean currents to exchange water. The ocean current water exchange requires the movement of the ship, so that the external seawater drives the seawater in the aquaculture cabin to move slightly under the action of inertia. The hull itself moves quickly under the action of power to achieve surface exchange of internal and external water bodies. This method has the problems of uneven water exchange and high energy consumption. Summary of the Invention

[0004] The present invention addresses the shortcomings of uneven water exchange and high energy consumption in the existing aquaculture vessels' method of changing water with the help of ocean currents. The first purpose of the present invention is to provide an aquaculture cabin based on ocean wave energy for water exchange, which can significantly reduce energy consumption and improve the uniformity of water exchange.

[0005] In order to solve the above technical problems, the present invention is solved by the following technical solutions: The aquaculture cabin that uses ocean wave energy to exchange water includes a cabin, a sea-connected water exchange port is provided on the side of the cabin, a water outlet pipe connected to the seabed water exchange port is provided at the bottom of the cabin, and a first one-way valve for draining water from the cabin to the outside is provided on the water outlet pipe. When surge waves enter the cabin from the water exchange port and generate a pressure difference exceeding a preset pressure, the first one-way valve opens for one-way drainage until the pressure difference between the inside and outside is the same.

[0006] By adopting the above scheme, a water exchange port is provided on the side of the aquaculture cabin and an outlet pipe with a first one-way valve is provided at the bottom. The pressure difference formed by the surge wave is used to drive the first one-way valve to open, thereby realizing automatic one-way drainage from the cabin to the ocean. When the pressure difference is the same, the first one-way valve is closed. The above design achieves the purpose of water exchange and can discharge the old water at the bottom in time to improve the uniformity of water exchange. This mechanism not only exchanges water evenly, but also realizes wave energy-driven water exchange that does not rely on the navigation of the ship, solving the problem of uneven water exchange and high energy consumption caused by the movement of the ship due to existing ocean current water exchange, and the drainage process automatically starts and stops with the wave cycle, adapting to the characteristics of the marine environment.

[0007] Preferably, a first stop valve is connected in series on the water outlet pipe.

[0008] By adopting the above solution, the first stop valve is connected in series with the water outlet pipe, and the opening and closing of the water outlet pipe can be controlled manually or remotely, thereby enhancing the controllability of the water exchange system, making it easier to close the water outlet pipe during maintenance, water exchange mode switching or emergency situations, and improving the flexibility and safety of the system.

[0009] Preferably, a water inlet pipe connected to the seabed water exchange port is provided at the bottom of the cabin, and a second stop valve is provided on the water inlet pipe.

[0010] By adopting the above solution, an inlet pipe with a second stop valve is added to increase the bottom water inlet path for the breeding cabin. In conjunction with the outlet pipe, two-way water flow control can be achieved, supporting multiple water exchange modes, such as displacement water exchange. The stop valve can independently control the water inlet on and off to meet the needs of different breeding scenarios.

[0011] Preferably, a second one-way valve is provided on the water inlet pipe for one-way water intake from outside to the cabin.

[0012] By adopting the above solution, a second one-way valve is set in the water inlet pipe to limit the water flow to only one direction from the outside to the cabin, preventing the water in the cabin from flowing back to the outside, ensuring the stability of water inlet, avoiding water turbulence caused by the reverse impact of waves, and ensuring water exchange efficiency.

[0013] The second object of the present invention is to provide a semi-submersible sea-going aquaculture vessel, comprising a hull, wherein the aquaculture cabin for exchanging water based on ocean wave energy is provided below the deck of the hull.

[0014] By adopting the above scheme, the aforementioned aquaculture cabin is applied to a semi-submersible aquaculture vessel, so that the vessel has the ability to exchange water using wave energy, breaking through the high energy consumption bottleneck of traditional offshore aquaculture vessels, reducing operating costs, adapting to the offshore environment, and expanding aquaculture scenarios.

[0015] Preferably, several breeding cabins are provided, and dry compartments for laying pipelines and valves are provided between adjacent breeding cabins. The dry compartments are provided with stairs connected to the deck, and the seabed water exchange port is provided in the dry compartment.

[0016] The above solution optimizes space utilization and facilitates the installation and maintenance of pipelines and valves; the stairway ensures the safety of personnel operations, and the dry bulkhead protects equipment from direct impact of seawater.

[0017] Preferably, a water exchange channel is arranged at the bottom of the breeding cabin near the two sides, and the water exchange channel includes a main channel extending to both ends of the hull and extending to all breeding cabins, a branch channel extending from the autonomous channel to each dry compartment, and a water passage channel extending from the autonomous channel to the seabed water exchange port in each dry compartment, and at least one set of water inlet pipes and water outlet pipes are connected in parallel to the branch channel.

[0018] Using the above solution, the water exchange channel is refined into a main channel, branch channels and water flow channels. The branch channels are connected in parallel with the water inlet pipe and the water outlet pipe to build a complete water flow distribution system, which enables independent water exchange in each breeding cabin. The water flow path is clear and controllable, and can simultaneously support different water exchange modes, such as dilution and replacement.

[0019] Preferably, a third stop valve is provided on the water passage.

[0020] By adopting the above solution, a third shut-off valve is set in the water channel, which can independently control the on and off of the water channel, making it convenient to repair and debug the water exchange channel, or adjust the water flow rate according to aquaculture needs, thereby improving the local control accuracy of the system.

[0021] Preferably, an oxygen sensor for measuring the oxygen content of seawater, a temperature sensor for measuring the temperature, and a flow meter for measuring the flow rate are provided in the breeding cabin.

[0022] By adopting the above scheme, we can timely grasp the changes in the aquaculture environment, provide data support for the adjustment of water exchange strategy, ensure the survival conditions of fish, and reduce aquaculture risks.

[0023] Preferably, a bilge water suction port and a bilge water level alarm device are provided at the lowest point of the bottom of the dry bulkhead.

[0024] With the above solution, a bilge water suction port and a liquid level alarm device are installed at the bottom of the dry bulkhead, which can promptly handle accumulated water and issue an early warning to prevent bilge water from silting up and damaging equipment. The liquid level alarm ensures timely response to abnormal situations, improving system safety and maintenance efficiency.

[0025] Due to the adoption of the above technical solutions, the present invention has significant technical effects: it uses wave energy to drive water exchange, without relying on ship navigation or other additional equipment, and can achieve 48 water exchanges per day under 1.5-meter waves, which significantly reduces energy consumption compared to traditional ocean current water exchange; it is equipped with multiple breeding cabins and equipped with water exchange channels to support batch breeding and meet the needs of large-scale offshore breeding. The breeding ship has the advantages of low energy consumption, high automation and uniform water exchange, which significantly reduces the operating cost of offshore breeding and solves the pain points of high cost and high energy consumption of traditional offshore breeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the ocean wave energy water exchange system of the semi-submersible sea-going aquaculture vessel in this embodiment; Figure 2 It is a cross-sectional view of the aquaculture cabin according to this embodiment that uses ocean wave energy to exchange water.

[0027] The names of the parts indicated by the numerical labels in the above drawings are as follows: 1. Breeding tank; 2. Dry compartment; 3. Seabed water exchange port; 4. Main channel; 5. Water passage; 6. Third stop valve; 7. Outlet pipe; 8. First stop valve; 9. First one-way valve; 10. Inlet pipe; 11. Second stop valve; 12. Second one-way valve; 13. Sea water exchange port. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Semi-submersible sea-going aquaculture vessel, refer to Figure 1-Figure 2 As shown, it includes a hull, and 7 independent aquaculture cabins 1 based on ocean wave energy water exchange are arranged at intervals along the length direction of the hull below the deck of the hull, numbered NO.1-NO.7, and dry compartments 2 are arranged between adjacent aquaculture cabins 1. The aquaculture cabins 1 and the dry compartments 2 are integrated with a water exchange system based on wave energy.

[0030] The water exchange system includes a seawater exchange port 13, a water exchange channel, an inlet pipe 10, an outlet pipe 7, a submarine water exchange port 3, and a valve assembly. The seawater exchange ports 13 are located on both sides of the aquaculture tank 1, with several horizontally spaced apart on each side. The inlet pipe 10 and outlet pipe 7 form an inlet and outlet pipeline. These inlet and outlet pipes are located on both sides of the bottom of the aquaculture tank 1, with two sets on each side, each extending from the aquaculture tank 1 into the dry compartment 2. The submarine water exchange ports 3 are located in the dry compartment 2, with two installed in each dry compartment 2.

[0031] The water exchange channel includes a main channel 4, a branch channel and a water transfer channel 5. The main channel 4 adopts a DN900 seamless steel pipe and is arranged along the bottom of the hull near the two sides, extending from the rear wall of the NO.1 breeding cabin 1 to the front wall of the NO.7 breeding cabin, running through the entire ship; the branch channel and the independent channel 4 extend 6 meters along the rear wall of the NO.2-NO.7 breeding cabin 1 toward the middle of the ship, and are connected to the water inlet pipe 10 and the water outlet pipe 7 of the breeding cabin to realize independent water supply for each cabin; the water transfer channel 5 and the independent channel 4 extend to the seabed water exchange port 3 in each dry compartment 2.

[0032] The valve assembly includes a first one-way valve 9 and a first stop valve 8 arranged in series on the outlet pipe 7, a second one-way valve 12 and a second stop valve 11 arranged in series on the water inlet pipe 10, and a third stop valve 6 arranged on the water passage 5. The flow direction of the first one-way valve 9 is one-way flow from the cabin of the breeding cabin 1 to the outside. When the surge causes the pressure difference between the inside and outside of the cabin to exceed the preset value, it automatically opens and automatically closes after balance; the flow direction of the second one-way valve 12 is one-way flow from the outside to the cabin of the breeding cabin. The second one-way valve 12 only allows external seawater to flow into the cabin to prevent the water in the cabin from flowing back.

[0033] The first one-way valve 9 and the second one-way valve 12 are both spring one-way valves; the first stop valve 8, the second stop valve 11 and the third stop valve 6 are all remote-controlled butterfly valves, preferably wireless remote-controlled butterfly valves, which are equipped with a Bluetooth module or a Wi-Fi module. A controller is provided in the console, which is connected to the Bluetooth module or the Wi-Fi module. The controller realizes remote switching of these wireless remote-controlled butterfly valves through existing logic programming.

[0034] In addition to piping and valves, dry bulkhead compartment 2 is also equipped with lighting and ventilation, such as two 50W LED explosion-proof lights and an axial fan, to maintain a safe operating environment. Dry bulkhead compartment 2 is also equipped with safety devices, including a bilge water suction port located at the lowest point of the bilge, connected to a marine bilge pump to promptly drain accumulated water. A bilge water level alarm is also installed, which triggers an alarm when the water level exceeds a preset height to prevent equipment flooding. Each dry bulkhead compartment 2 also has a vertical stairway extending from the deck to the bilge, conveniently allowing personnel to enter and exit.

[0035] Each breeding cabin 1 is equipped with an oxygen sensor, a temperature sensor, a flow meter and an alarm. These components are connected to the controller. When it is detected that the oxygen content is not within the preset value range, the temperature is not within the preset value range, or the flow rate is not within the preset value range, these components will send a signal to the controller, and the controller will control the alarm to sound an alarm.

[0036] A water exchange pump is provided in the cabin of each aquaculture cabin 1. The water exchange pump is connected to the water inlet pipe 10 and the water outlet pipe 7 and is linked through the controller valve assembly. For example, the water exchange pump can cooperate with the water inlet pipe 10 to operate. When fresh seawater needs to be quickly replenished, the water exchange pump is linked with the second stop valve 11 to accelerate the external seawater through the water inlet pipe 10 and inject it into the cabin through the second one-way valve 12; when the wave energy is insufficient or forced drainage is required, the water exchange pump can actively drain water through the outlet pipe 7, artificially create a pressure difference between the inside and outside of the cabin, force the first one-way valve 9 to open, and assist in realizing water exchange. The water exchange pump forms a cooperatively controlled water flow regulation path by connecting with the above-mentioned water inlet pipe 10 and outlet pipe 7, and cooperates with the valve assembly and sensor system to achieve precise regulation of the water body in the aquaculture cabin 1.

[0037] Ocean wave energy water exchange includes the following water exchange modes: Dilution-type water exchange: When the surge is in a naturally fluctuating state, if the external wave height is higher than the height of the cabin's sea-going water exchange port 13, the surge will flow directly into the cabin through the sea-going water exchange port 13, causing the water level in the cabin to rise with the wave crest; when the surge switches from the crest to the trough, the external water level is lower than the water level in the cabin, and the seawater in the cabin will naturally flow out to the sea through the sea-going water exchange port 13, completing a surface water exchange.

[0038] In this process, water dilution is achieved only through the two-way flow of the sea water exchange port 13. The characteristic is that the water exchange volume is large but only involves the surface water body, which is suitable for quickly updating the surface water quality in the cabin, but the replacement is not sufficient; Displacement water exchange: When a surge enters the cabin through the seawater exchange port 13, and the amount of water flowing in makes the water level in the cabin significantly higher than the external seawater level, that is, the pressure difference between the inside and outside of the cabin exceeds the preset threshold of the first one-way valve 9, the first one-way valve 9 automatically opens; at this time, the seawater in the cabin is discharged to the outside through the outlet pipe 7 at the bottom until the water level inside and outside the cabin is balanced and the pressure difference disappears, and the first one-way valve 9 automatically closes.

[0039] During this process, the water inlet of the sea water exchange port 13 and the drainage of the bottom water outlet pipe 7 form a coordinated system to achieve full replacement of the water in the cabin. The characteristics are that the water exchange volume is small but the water body is updated more thoroughly, which is suitable for scenarios that require deep improvement of the water quality in the cabin.

[0040] When the waves are relatively gentle and the pressure difference does not reach the threshold of the first one-way valve 9, only the dilution water exchange is triggered; when the wave intensity is large enough and the pressure difference exceeds the threshold, the displacement water exchange is automatically triggered. At this time, the surface flow of the dilution water exchange may still exist, but the core completes the full-tank replacement through the bottom pipe.

[0041] This workboat effectively solves the problems of traditional offshore aquaculture, such as high energy consumption, high costs, and uneven water changes, and provides an efficient solution for large-scale offshore aquaculture.

[0042] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A breeding cabin based on ocean wave energy water exchange, comprising a cabin, a sea water exchange port (13) is provided on the side of the cabin, and is characterized by: A water outlet pipe (7) communicating with a seabed water exchange port (3) is provided at the bottom of the cabin. A first one-way valve (9) for discharging water from the cabin to the outside is provided on the water outlet pipe (7). When a surge enters the cabin from the water exchange port and generates a pressure difference exceeding a preset value, the first one-way valve (9) opens to perform one-way drainage until the pressure difference between the inside and the outside is the same.

2. The aquaculture cabin based on ocean wave energy water exchange according to claim 1 is characterized in that: A first stop valve (8) is connected in series to the water outlet pipe (7).

3. The aquaculture cabin based on ocean wave energy water exchange according to claim 2, characterized in that: A water inlet pipe (10) communicating with the seabed water exchange port (3) is provided at the bottom of the cabin, and a second stop valve (11) is provided on the water inlet pipe (10).

4. The aquaculture cabin based on ocean wave energy water exchange according to claim 3 is characterized in that: A second one-way valve (12) for one-way water inflow from the outside to the cabin is provided on the water inlet pipe (10).

5. A semi-submersible sea-going aquaculture vessel, comprising a hull, characterized in that: A breeding cabin for exchanging water based on ocean wave energy as described in any one of claims 1 to 4 is provided under the deck of the hull.

6. The semi-submersible sea-going aquaculture vessel according to claim 5, characterized in that: A plurality of breeding cabins (1) are provided, and dry compartments (2) for laying pipelines and valves are provided between adjacent breeding cabins (1). The dry compartments (2) are provided with ladders connected to the deck, and a seabed water exchange port (3) is provided in the dry compartments (2).

7. The semi-submersible sea-going aquaculture vessel according to claim 6, characterized in that: A water exchange channel is arranged at a position near both sides of the bottom of the aquaculture cabin (1), and the water exchange channel includes a main channel (4) extending to both ends of the hull and extending to all aquaculture cabins (1), a branch channel extending from the main channel (4) to each dry compartment (2), and a water passage (5) extending from the main channel (4) to a seabed water exchange port (3) in each dry compartment (2), and at least one set of water inlet pipes (10) and water outlet pipes (7) are connected in parallel to the branch channel.

8. The semi-submersible sea-going aquaculture vessel according to claim 7, characterized in that: A third stop valve (6) is provided on the water passage (5).

9. The semi-submersible sea-going aquaculture vessel according to claim 5, characterized in that: An oxygen sensor for measuring the oxygen content of seawater, a temperature sensor for measuring the temperature, and a flow meter for measuring the flow rate are arranged in the aquaculture cabin (1).

10. The semi-submersible sea-going aquaculture vessel according to any one of claims 6 to 9, characterized in that: A bilge water suction port and a bilge water level alarm device are provided at the lowest point of the bottom of the dry bulkhead (2).

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