Cultivation liquid tank structure of closed cultivation work ship

Abstract

The utility model provides a culture liquid tank structure of a closed culture work ship, which is characterized in that the four corners of a culture liquid tank are provided with break angles, so that the orthographic projection of the culture liquid tank on a horizontal plane forms an octagonal structure, four long sides are distributed in a rectangular shape, the distance between the two opposite long sides is B, the length of the other four short sides formed by the break angles is a, 0.25 < = a / B < = 0.4; a water inlet pipe is arranged in the culture liquid cabin, and a water outlet is formed in the bottom of the culture liquid cabin; the bottom of the culture liquid cabin is horizontal. The average flow velocity and the effective utilization rate of energy in the culture liquid cabin are greatly improved; the flow field form is changed into a flow state with uniform flow velocity and no low-flow-velocity dead angle from a non-uniform flow velocity and obvious low-flow-velocity dead angle area; vortex in the pool is stable, obvious vortex columns are arranged in a middle water outlet area, and vortex rings on the pool wall have huge energy. The culture liquid tank structure is good in fish adaptability, high in self-cleaning capacity, high in effective energy utilization rate and capable of effectively utilizing culture space.

Description

Technical Field

[0001] The utility model relates to the technical field of aquaculture liquid tanks, in particular to a closed aquaculture liquid tank structure for aquaculture work boats. Background Art

[0002] Closed aquaculture vessels are a comprehensive offshore fishery production platform with autonomous navigation capabilities. They mainly produce through onboard tank farming, and also have the functions of primary processing, storage and transportation of aquatic products. Aquaculture vessels can select sea areas with suitable water temperatures for north-south relay farming through cruising aquaculture, while selecting lower water with fewer pathogens to solve the problem of parasitic diseases, and can actively avoid natural disasters such as super typhoons or red tides, effectively solving the uncertainty of traditional open cage farming that relies on weather. In addition, the flow field of the closed aquaculture cabin can be artificially created with a specific water flow environment, and a flow rate suitable for fish growth can be selected to improve aquaculture efficiency and quality. At the same time, it can also effectively collect pollution and prevent biological escape.

[0003] At present, the structure of the aquaculture tank of the closed aquaculture vessel is as follows: Figures 1 to 4 As shown, a right-angle design is adopted, that is, the positive projection of the aquaculture tank on the horizontal plane is a square or rectangle, with a top tank, an intermediate tank and a bottom tank. The top tank tapers from the top of the intermediate tank to the top of the top tank; the bottom tank tapers from the bottom of the intermediate tank to the bottom of the bottom tank. There is a water inlet pipe in the aquaculture tank and a water outlet at the bottom. This structure has low flow velocity areas and dead corners of water flow, which are mainly distributed in the four corners. The flow field conditions in the aquaculture tank are poor, and the advantages in aquaculture efficiency and self-cleaning are insufficient, making it difficult to meet the needs of high-quality and high-value aquaculture. Therefore, how to improve the flow field conditions in the aquaculture tank of the aquaculture ship through basic structure design optimization, improve the aquaculture efficiency and self-cleaning performance, is an important technical problem that needs to be solved in this field, and it is also an important condition to help the new model of aquaculture ships achieve intensive development and promote aquaculture to the deep sea. Utility Model Content

[0004] In response to the above technical problems, a closed aquaculture liquid tank structure for aquaculture work boat is provided. The utility model mainly changes the basic structure of the aquaculture liquid tank, changes the right angles of the four corners of the aquaculture liquid tank into folded angles, thereby realizing an increase in the average flow velocity, uniformity and fluid energy in the aquaculture liquid tank. It is an aquaculture liquid tank structure that takes into account good fish suitability, strong self-cleaning ability, high energy efficiency and effective use of aquaculture space.

[0005] The technical means adopted by the utility model are as follows:

[0006] A closed aquaculture tank structure for aquaculture workboat, wherein the aquaculture tank has folded corners at the four corners, so that the orthographic projection of the aquaculture tank on the horizontal plane forms an octagonal structure, wherein the four long sides are distributed in a rectangular shape, and the distance between two long sides arranged opposite to each other is B, and the length of the other four short sides formed by the folded corners is a, and 0.25≤a / B≤0.4;

[0007] A water inlet pipe is arranged in the aquaculture liquid tank, and a water outlet is arranged at the bottom of the aquaculture liquid tank; and the bottom of the aquaculture liquid tank is horizontal.

[0008] Preferably, the aquaculture liquid tank is divided into a top tank, a middle tank and a bottom tank from top to bottom;

[0009] The topside tank tapers from the top of the middle tank to the top of the topside tank;

[0010] The hopper tank tapers from the bottom of the middle tank to the bottom of the hopper tank.

[0011] Preferably, the water inlet pipe is parallel to the middle of the side wall of the aquaculture tank, and perpendicular to the bottom of the aquaculture tank, and extends from top to bottom to the bottom of the aquaculture tank, and a plurality of horizontally arranged water outlet holes are arranged on the side wall of the water inlet pipe from top to bottom. The distance between the water inlet pipe and the side wall is 0.02m.

[0012] Preferably, the water outlet is located at the bottom center of the aquaculture liquid tank.

[0013] Compared with the prior art, the utility model has the following advantages:

[0014] Compared with the basic structure of the aquaculture tank of the conventional closed aquaculture ship, the average flow velocity and energy efficiency in the aquaculture tank of the utility model are greatly improved; the flow field shape changes from uneven flow velocity and obvious low flow velocity dead corner area to uniform flow velocity and no low flow velocity dead corner; the vortex in the pool is stable, there is an obvious vortex column in the middle drain area, and the vortex ring on the pool wall has huge energy. It is a aquaculture tank structure that takes into account good fish suitability, strong self-cleaning ability, high energy efficiency and effective use of aquaculture space.

[0015] Based on the above reasons, the utility model can be widely promoted in the fields of aquaculture vessels and the like. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a side view of a traditional aquaculture liquid tank in the background technology of the utility model when it is set on an aquaculture ship.

[0018] Figure 2 It is a top view of a traditional aquaculture liquid tank in the background technology of the utility model when it is set on a aquaculture ship.

[0019] Figure 3 It is a three-dimensional view of a traditional aquaculture liquid tank in the background technology of the utility model.

[0020] Figure 4 It is a top view of a traditional aquaculture liquid tank in the background technology of the utility model.

[0021] Figure 5 It is a three-dimensional view of the aquaculture liquid tank structure of a closed aquaculture vessel in a specific implementation manner of the utility model.

[0022] Figure 6 It is a top view of the aquaculture liquid tank structure of a closed aquaculture vessel in a specific implementation manner of the utility model.

[0023] Figure 7 The different water depths h in the aquaculture tank model in the specific implementation mode of the utility model z Comparison of the average flow velocity in each section.

[0024] Figure 8 The water depth h in the aquaculture tank model in the specific implementation mode of the utility model z =Comparison chart of velocity cloud diagram of 0.03m section.

[0025] Fig. 9 It is a comparison diagram of vortex distribution at a water inlet speed of 0.8 m / s in a culture liquid tank model in an embodiment of the utility model.

[0026] Fig.10 It is a comparison diagram of vortex distribution at a water inlet speed of 1.0 m / s in a culture liquid tank model in an embodiment of the utility model.

[0027] Fig.11 It is a comparison diagram of vortex distribution at a water inlet speed of 1.2 m / s in a culture liquid tank model in an embodiment of the utility model.

[0028] Fig.12 is the energy effective utilization coefficient η in the aquaculture tank model in the specific implementation mode of the utility model e . DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0031] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0032] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be clear that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0033] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise stated, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present utility model: the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0034] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below their position devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0035] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0036] like Figures 5 to 12 As shown, a closed aquaculture tank structure of aquaculture work boat, multiple aquaculture tanks are symmetrically arranged in the aquaculture work boat, and the four corners of the aquaculture tanks have angled corners, so that the positive projection of the aquaculture tanks on the horizontal plane forms an octagonal structure, wherein the four long sides 1 are distributed in a rectangular shape, and the distance between the two long sides 1 arranged oppositely is B, and the length of the other four short sides 2 formed by the angled corners is a, and 0.25≤a / B≤0.4; a water inlet pipe 3 is arranged in the aquaculture tank, and a water outlet 4 is arranged at the bottom center of the aquaculture tank; the bottom of the aquaculture tank is horizontal and has no slope. The aquaculture tank is divided into a top tank 5, an intermediate tank 6 and a bottom tank 7 from top to bottom; the top tank 5 gradually shrinks from the top of the intermediate tank 6 to the top of the top tank 5; the bottom tank 7 gradually shrinks from the bottom of the intermediate tank 6 to the bottom of the bottom tank 7, which plays a role in reducing sway and conforms to the hull structure. The water inlet pipe 3 is parallel to the middle of the side wall of the aquaculture liquid tank, and perpendicular to the bottom of the aquaculture liquid tank, and extends from top to bottom to the bottom of the aquaculture liquid tank. A plurality of horizontally arranged water outlet holes are arranged on the side wall of the water inlet pipe 3 from top to bottom.

[0037] The aquaculture tank model is used to verify the average flow velocity, flow velocity distribution uniformity, and flow state in the aquaculture tank. The scale of the model disclosed in this specific embodiment and the actual aquaculture tank is 1:40, and the effective aquaculture water volume of the model is 0.09728m 3, using the traditional aquaculture liquid tank in the background technology as a comparison, the size of the traditional aquaculture liquid tank is the same as that of the aquaculture liquid tank in this specific embodiment, but the shape and structure are different.

[0038] like Figure 7 In the figure, when a / B is 0, it is a traditional aquaculture liquid tank. It can be clearly seen that when a / B reaches about 0.35, the average flow velocity of the cross-section at 0.03m, 0.1m, and 0.2m in this specific implementation method is 35% higher than that of the traditional aquaculture liquid tank.

[0039] from Figure 8 It can be clearly seen in the aquaculture tank model that, compared with the traditional structure, the velocity of each cross section is larger and evenly distributed, there is no obvious low velocity area, and it has better fish suitability and water environment. In the figure, a is a traditional aquaculture tank, b is a / B=0.05 in this specific implementation, c is a / B=0.10 in this specific implementation, d is a / B=0.15 in this specific implementation, ... and so on. i is a / B=0.40 in this specific implementation, Figures 9 to 11 The same is true.

[0040] from Figures 9-11 It can be clearly seen in the aquaculture tank model that, compared with the traditional structure, the vortex in the pool is stable, there is an obvious vortex column in the middle drain area, and the vortex ring on the pool wall has huge energy, which is beneficial to improving the self-cleaning performance of the aquaculture tank system.

[0041] from Fig.12 It can be clearly seen that the effective energy utilization rate of the aquaculture liquid tank model is increased by 70% compared with the traditional structure.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A closed aquaculture tank structure for aquaculture vessels, characterized in that: The aquaculture tank has folded corners at the four corners, so that the orthographic projection of the aquaculture tank on the horizontal plane forms an octagonal structure, wherein the four long sides are distributed in a rectangular shape, and the distance between two long sides arranged opposite to each other is B, and the length of the other four short sides formed by the folded corners is a, and 0.25≤a / B≤0.4; A water inlet pipe is arranged in the aquaculture liquid tank, and a water outlet is arranged at the bottom of the aquaculture liquid tank; and the bottom of the aquaculture liquid tank is horizontal.

2. The closed aquaculture tank structure of aquaculture workboat according to claim 1, characterized in that: The aquaculture liquid tank is divided into a top side tank, an intermediate tank and a bottom side tank from top to bottom; The topside tank tapers from the top of the middle tank to the top of the topside tank; The hopper tank tapers from the bottom of the middle tank to the bottom of the hopper tank.

3. The closed aquaculture tank structure of aquaculture workboat according to claim 1, characterized in that: The water inlet pipe is parallel to the middle of the side wall of the aquaculture liquid tank, and perpendicular to the bottom of the aquaculture liquid tank, and extends from top to bottom to the bottom of the aquaculture liquid tank. A plurality of horizontally arranged water outlet holes are arranged on the side wall of the water inlet pipe from top to bottom.

4. The closed aquaculture tank structure of aquaculture workboat according to claim 1, characterized in that: The water outlet is located at the bottom center of the aquaculture liquid tank.

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