Fish Egg Habitat Construction with Adjustable River Flow Guidance
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Solution Overview
Problem
Existing technologies cause damage to fish eggs through micro-current formation and struggle to collect and hatch adhesive and demersal eggs in natural rivers, with poor adaptability to water level and flow variations, and lack protection for fish diversity in dam upstream and downstream regions.
Innovation Solution
A habitat construction apparatus with a floating top cover, telescopic lifting posts, and a double-layer adjusting plate that adjusts water flow, combined with a fish monitoring and positioning system, air pumps for micro-currents, and a substrate for egg attachment, to adapt to river conditions and facilitate egg hatching and larval release across dams.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a micro-current environment is formed through a stirring process, then the water flow demand of fish eggs is met, but the fish eggs are damaged
Solution Approach 1:
The patent extracts the harmful stirring action from the incubation system and replaces it with a natural water flow guidance mechanism. The V-shaped guiding wall structure channels water flow naturally along the incubation box without requiring active stirring, thus meeting the water flow demands of fish eggs while avoiding mechanical damage from stirring processes
Solution Approach 2:
The V-shaped guiding wall acts as an intermediary element that mediates between the water flow source and the fish eggs. It redirects and softens the water flow, creating a gentle current that satisfies the eggs' oxygenation needs while preventing direct impact and damage to the eggs
2Reliability
If research techniques are limited to artificial aquaculture fields, then controlled hatching conditions are achieved, but adaptability to natural rivers with large daily variation in water level and flow is poor
Solution Approach 1:
The patent implements a telescopic lifting post mechanism that enables dynamic adjustment of the incubation box height. This dynamic structure can adapt to varying water levels in natural rivers, allowing the system to maintain reliable hatching conditions while accommodating the versatility needed for different hydrological conditions
Solution Approach 2:
The incubation box is designed with multi-functional capabilities to operate effectively in both artificial aquaculture environments and natural river conditions. The universal design incorporates adjustable height mechanisms and flow guidance features that make the system adaptable across different water environments while maintaining hatching reliability
3Ease of manufacture
If the apparatus structure is simplified for ease of manufacture, then manufacturing cost is reduced, but the ability to adjust water flow and construct appropriate habitat environment is compromised
Solution Approach 1:
The apparatus is segmented into modular components including the incubation box, V-shaped guiding wall, and telescopic lifting post. This segmentation allows for simplified manufacturing of individual parts while maintaining the overall water flow adjustment capability through the coordinated assembly of these manageable modules
Solution Approach 2:
The telescopic lifting post provides a dynamic adjustment mechanism that can be manufactured relatively simply yet delivers significant functional capability. The extendable structure allows the apparatus to adjust its height and adapt to different water conditions without requiring complex manufacturing processes
4Adaptability or versatility
If fish eggs are collected and incubated in natural rivers, then fish diversity protection is improved, but the adaptability to large daily variation in water level and flow is poor
Solution Approach 1:
The dynamic telescopic lifting post mechanism enables the incubation box to adjust its position vertically, allowing the system to maintain reliable operation despite large daily variations in water level and flow while collecting and incubating fish eggs in natural rivers for diversity protection
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The apparatus effectively constructs suitable habitats for fish eggs, reduces predation risks, and facilitates dam crossing, promoting fish population reproduction and biodiversity while adapting to river flow and level changes, thus protecting fish resources and ecosystems.
Implementation Method 1
an air pump, and the air pump is used to spray air through the micro nozzles to form micro-currents
Implementation Method 2
a floating device and a temporary tank set on the floating device
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
The present invention relates to the field of fish habitat protection, and specifically to a habitat construction apparatus oriented to reproduction requirements of fishes with adhesive and demersal eggs and an operation method. The habitat construction apparatus includes a base (4), a top cover (3), an anchoring component (5), an elevation assembly, a double-layer adjusting plate, a propeller (42), a fish monitoring and positioning system, an intelligent control system, and a rechargeable battery (9). Movable sheets (63) of the intelligent double-layer adjusting plate provided in the present invention can swing vertically by 0° to 90°, which helps to adjust a water flow field and construct an appropriate habitat threshold in an egg collection region. The habitat construction apparatus can be used as a prototype observation and experiment platform for habitat environment sensitivity, fish school size and species quantity, fish egg production, and the like, promote natural reproduction of fish population, overcome deficiencies in artificial fish stocking, help to alleviate the contradiction between the development and utilization of hydroelectric resources and water ecological protection, and can be used as an important technical support for water ecological restoration and fish resource protection.