CN109197744B - Tumbler type culture area tidal current pump oxygenation device - Google Patents
Tumbler type culture area tidal current pump oxygenation device Download PDFInfo
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- CN109197744B CN109197744B CN201811236472.1A CN201811236472A CN109197744B CN 109197744 B CN109197744 B CN 109197744B CN 201811236472 A CN201811236472 A CN 201811236472A CN 109197744 B CN109197744 B CN 109197744B
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- 238000006213 oxygenation reaction Methods 0.000 title claims abstract description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 8
- 239000001301 oxygen Substances 0.000 claims abstract description 8
- 239000000463 material Substances 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000009360 aquaculture Methods 0.000 claims 2
- 244000144974 aquaculture Species 0.000 claims 2
- 206010021143 Hypoxia Diseases 0.000 abstract description 11
- 238000013461 design Methods 0.000 abstract description 3
- 206010002660 Anoxia Diseases 0.000 abstract description 2
- 241000976983 Anoxia Species 0.000 abstract description 2
- 230000007953 anoxia Effects 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000000694 effects Effects 0.000 description 3
- 230000007954 hypoxia Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000013517 stratification Methods 0.000 description 3
- 230000006378 damage Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241000251511 Holothuroidea Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 244000061176 Nicotiana tabacum Species 0.000 description 1
- 235000002637 Nicotiana tabacum Nutrition 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 230000000035 biogenic effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000004177 carbon cycle Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01K—ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS
- A01K63/00—Receptacles for live fish, e.g. aquaria; Terraria
- A01K63/04—Arrangements for treating water specially adapted to receptacles for live fish
- A01K63/042—Introducing gases into the water, e.g. aerators, air pumps
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Marine Sciences & Fisheries (AREA)
- Animal Husbandry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The invention discloses a tumbler type tidal current pump oxygenation device for a culture area, and belongs to the technical field of solving ocean anoxia; the two tidal pumps are arranged in the tumbler type device, so that one pump always keeps upright when the device is arranged on the seabed, the device is simple in structure and flexible in design, the tidal pump consists of a section of 90-degree bent pipe and a section of vertical pipe, the guide plate of the bent pipe part can enable the pump port to always face the flow direction, the horizontal tidal flow forms downward flow through the bent pipe to relieve the anoxic phenomenon of a culture area, and enough oxygen is provided for benthic organisms.
Description
Technical Field
The invention relates to the technical field of solving ocean anoxia, in particular to a tidal current pump oxygenation device for a culture area.
Background
In recent decades, the eutrophication of water body is intensified year by year under the influence of human activities, so that the oxygen deficiency of the water body at the bottom layer of the near coast is in a continuous rising trend. Dissolved oxygen in the ocean is an important biogenic factor parameter and is also a key factor for the maintenance and development of the ocean ecosystem. Usually, DO concentration in the water body is defined as 2mg/L and is in an anoxic state, and when the DO concentration in the water body is greater than 2mg/L, most aquatic organisms in the ocean are dead.
The water body is seriously damaged by oxygen deficiency, the variety of marine species can be reduced by the oxygen deficiency event, the community structure of marine organisms is changed, and the abundance of fishes and benthonic animals is reduced, so that the fishery production is influenced, and the direct or indirect economic loss is brought. Sea cucumber is killed in large scale in a sea area of nearly 200 kilometers such as a horse-raising island of a tobacco station due to seasonal hypoxia, and the annual economic loss reaches hundreds of millions of yuan.
Ocean anoxic events not only affect the ocean biochemical processes, but also alter global carbon and nitrogen cycles, thereby causing serious damage to the entire ecosystem. The phenomenon of ocean hypoxia has become more and more intense in the world, which has led scientists to pay more attention, and how to solve the problem of hypoxia becomes one of the hot spots in the current ocean field research.
The existing methods for solving the problem of oxygen deficiency proposed by scientists include deep water injection, a bubble generator, a density flow generator and the like, but the methods have the defects of energy consumption, difficulty in solving the energy problem in deep sea areas, large volume of the devices and inflexibility in use.
Disclosure of Invention
The invention aims to provide a tumbler type tidal current pump oxygen increasing device for a culture area, which can realize oxygen increase in the culture area by using a tidal current pump, solves the problem of oxygen deficiency of bottom seawater, provides enough oxygen for benthos, and has flexible design and simple structure.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a tidal current pump oxygenation device in a tumbler type culture area comprises: the pile fixing device comprises a first tidal pump, a first guide plate, a second tidal pump, a second guide plate, a first pile fixing frame, a second pile fixing frame, a third pile fixing frame and pile fixing nails; the first tidal pump and the second tidal pump are identical in structure and are respectively formed by communicating a section of 90-degree elbow pipe with a section of vertical downdraft pipe, the first guide plate is fixed on the elbow pipe of the first tidal pump, and the second guide plate is fixed on the elbow pipe of the second tidal pump; one end of the first pile fixing frame is fixedly connected with one end of the second pile fixing frame, the other end of the second pile fixing frame is fixedly connected with one end of the third pile fixing frame, the first pile fixing frame, the second pile fixing frame and the third pile fixing frame are mutually vertical, a plurality of pile fixing nails are arranged on the lower surface of the plane where the first pile fixing frame and the second pile fixing frame are located, and a plurality of pile fixing nails are also arranged on the lower surface of the plane where the second pile fixing frame and the third pile fixing frame are located; the vertical downflow pipe of the first tidal pump is sleeved in the first pile fixing frame and is rotationally connected with the first pile fixing frame, and the vertical downflow pipe of the second tidal pump is sleeved in the third pile fixing frame and is rotationally connected with the third pile fixing frame.
Furthermore, a clamp is clamped on the vertical downpipe.
Further, the first tidal pump, the first guide plate, the second tidal pump and the second guide plate are all made of PVC.
Further, the first pile fixing frame, the second pile fixing frame and the third pile fixing frame are made of stainless steel.
Further, the material of the pile fixing nail is 45 steel.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention has simple structure, strong anti-interference performance, reliable use and easy installation and disassembly.
2. The device is simple to operate and has no complicated operation steps.
3. The tidal pump can generate artificial down flow, and the problem of oxygen deficiency at the seabed is solved.
4. Two tidal pumps are arranged at two ends of a tumbler type frame formed by connecting a first pile fixing frame, a second pile fixing frame and a third pile fixing frame, so that one pump always keeps upright when the device is arranged at the sea bottom.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view at A in FIG. 1;
FIG. 3 is a schematic diagram of the physical mechanism of the tidal pump of the present invention;
FIG. 4 is a graph of the results of an experiment according to the present invention;
in the figure: the device comprises a first tidal pump 1, a first guide plate 2, a second tidal pump 3, a second guide plate 4, a first pile fixing frame 5, a second pile fixing frame 6, a third pile fixing frame 7, pile fixing nails 8, an elbow 9, a vertical downcomer 10 and a hoop 11.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. In the following description and in the drawings, the same numbers in different drawings identify the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus consistent with certain aspects of the invention, as detailed in the claims below. Various embodiments of the present description are described in an incremental manner.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a tidal current pump oxygenation device for a tumbler-type cultivation area, including: the system comprises a first tidal pump 1, a first guide plate 2, a second tidal pump 3, a second guide plate 4, a first pile fixing frame 5, a second pile fixing frame 6, a third pile fixing frame 7 and pile fixing nails 8; the first tidal pump 1 and the second tidal pump 3 are identical in structure and are formed by communicating a section of 90-degree elbow 9 with a section of vertical downdraft tube 10, the first guide plate 2 is fixed on the elbow 9 of the first tidal pump 1, and the second guide plate 4 is fixed on the elbow 9 of the second tidal pump 3; one end of the first pile fixing frame 5 is fixedly connected with one end of the second pile fixing frame 6, the other end of the second pile fixing frame 6 is fixedly connected with one end of the third pile fixing frame 7, the first pile fixing frame 5, the second pile fixing frame 6 and the third pile fixing frame 7 are mutually vertical, a plurality of pile fixing nails 8 are arranged on the lower surface of the plane where the first pile fixing frame 5 and the second pile fixing frame 6 are located, and a plurality of pile fixing nails 8 are also arranged on the lower surface of the plane where the second pile fixing frame 6 and the third pile fixing frame 7 are located; the vertical downdraft pipe 10 of the first tidal pump 1 is sleeved in the first pile fixing frame 5 and is rotationally connected with the first pile fixing frame 5, and the vertical downdraft pipe 10 of the second tidal pump 3 is sleeved in the third pile fixing frame 7 and is rotationally connected with the third pile fixing frame 7.
Further, a clamp 11 is clamped on the vertical downpipe 10, the clamp 11 of the vertical downpipe 10 on the first tidal pump 1 is clamped at the outer end of the first pile fixing frame 5, and the clamp 11 is used for preventing the first tidal pump 1 from falling out of the first pile fixing frame 5. The clip 11 of the vertical downcomer 10 on the second tidal pump 3 is clipped at the outer end of the third pile holder 7 and the clip 11 is used to prevent the second tidal pump 3 from falling out of the third pile holder 7, as shown in figure 2.
Further, the materials of the first tidal pump 1, the first guide plate 2, the second tidal pump 3 and the second guide plate 4 are all PVC.
Further, the first pile fixing frame 5, the second pile fixing frame 6 and the third pile fixing frame 7 are made of stainless steel.
Further, the material of the pile fixing nail 8 is 45 steel.
The descent flow rate of the tidal pump is mainly determined by the tidal flow rate, relative density difference. The device adopts the structure of tumbler formula to guarantee always that a tidal pump downwash pipe can be upright all the time, makes the elbow portion can remain the level all the time, and solid stake nail 8 on the device is used for reducing the area of contact of solid pile rack and coast, prevents the ground and the coast contact of whole solid pile rack to reduce the injury to benthos, the effect of the guide plate of return bend department makes the pump mouth face towards the direction of flowing all the time.
Theoretical feasibility verification:
as shown in fig. 3, which is a schematic diagram of the physical mechanism of a tidal pump, the horizontal flow rate decreases due to a choking effect as the flow passes through the elbow inlet of the tidal pump. This deceleration will increase the static pressure at the inlet, if large enough to overcome stratification, driving a downflow in the tidal pump, according to bernoulli's principle. The law of conservation of energy (equation (1)) finds wide application in the engineering analysis of turbulent duct flow, irrespective of the detailed structure of the flow field. The kinetic energy of the horizontal flow should be large enough to ensure a continuous downflow, where the molecular viscosity and turbulent eddies dissipate the remaining kinetic energy of the downflow.
max(hk-hρ,0)＝hf (1)
Wherein h iskIs dynamic head, hρIs the density difference head, hfIs the fluid motion head loss.
The pump down flow capability can be studied from a physical model of the pump by similarity principles, which are based on characteristic dimensionless numbers, including both geometric similarity and dynamic similarity, controlling the flow field dynamics, thereby reducing experimental time and cost. Geometric similarity requires that all dimensions involved in the prototype be scaled in a common scale so that no deformation of the flow structure occurs in the prototype-to-model conversion. The scaled dimensions include pipe diameter D, pipe length L, bend radius R, average horizontal plane h0Depth of spring layer h0-h2And the length h of the pump immersion below the spring layer1。
Where the indices m and p refer to the model and prototype, respectively, r refers to the ratio from model to prototype, h2Is the characteristic length of the dense bottom water, DrThe design is 80:1, taking into account the limitations of water depth in the experiment.
In an artificial down-flow, the stratification resistance and inertial forces dominate, while the remaining forces are relatively small. The ratio of these two principal forces is a dimensionless Richardson number, indicating the dynamic importance of stratification under horizontal flow conditions.
Wherein Ri is the dimensionless Richardson number, U is the flow rate of the horizontal stream,
is the ratio of the relative density difference in the fluid, g is the gravitational acceleration, and H is the immersion length below the spring layer. Ri can be expressed as the ratio of the density difference head to the kinetic headHalf of that, dynamic similarity can be achieved by equating the value to the model and prototype.
Wherein v ishIs the horizontal flow velocity, p, at the upper bend entryiAnd ρoThe density of water above and below the spring layer, respectively.
All variables relating to the basic characteristics of the downwash, e.g. the downwash Q in the prototype, can be interchanged between the model and the prototypedIs achieved by multiplying the model by the following coefficients in the model.
The correctness of the theoretical model was verified by comparing the experimental results shown in fig. 4, the independent variable being the dimensionless Richardson number Ri, and the dependent variable being the ratio of the dynamic head of the descending flow to the incident dynamic head, representing the relative intensity of the descending flow. The relationship between these two variables may be determined by
Equation (6) is written.
Wherein ξtIs the overall loss factor related to the reynolds number and pump geometry, which is influenced very little by the reynolds number and is almost constant at a constant of 1.33. Due to similarity, this relationship in the prototype should follow a scale model. The experimental result is basically consistent with the theory, has negative deviation in principle, and proves the effectiveness of the tidal pump model in predicting the descending flow in practice.
Claims (5)
1. The utility model provides a tidal current pump oxygenation device in tumbler formula culture area which characterized in that includes: the pile fixing device comprises a first tidal pump, a first guide plate, a second tidal pump, a second guide plate, a first pile fixing frame, a second pile fixing frame, a third pile fixing frame and pile fixing nails; the first tidal pump and the second tidal pump are identical in structure and are respectively formed by communicating a section of 90-degree elbow pipe with a section of vertical downdraft pipe, the first guide plate is fixed on the elbow pipe of the first tidal pump, and the second guide plate is fixed on the elbow pipe of the second tidal pump; one end of the first pile fixing frame is fixedly connected with one end of the second pile fixing frame, the other end of the second pile fixing frame is fixedly connected with one end of the third pile fixing frame, the first pile fixing frame, the second pile fixing frame and the third pile fixing frame are mutually vertical, a plurality of pile fixing nails are arranged on the lower surface of the plane where the first pile fixing frame and the second pile fixing frame are located, and a plurality of pile fixing nails are also arranged on the lower surface of the plane where the second pile fixing frame and the third pile fixing frame are located; the vertical downflow pipe of the first tidal pump is sleeved in the first pile fixing frame and is rotationally connected with the first pile fixing frame, and the vertical downflow pipe of the second tidal pump is sleeved in the third pile fixing frame and is rotationally connected with the third pile fixing frame; the first tidal pump and the second tidal pump are arranged at two ends of a tumbler type frame formed by connecting the first pile fixing frame, the second pile fixing frame and the third pile fixing frame, so that a vertical downdraft pipe of the first tidal pump or the second tidal pump is always vertical and an elbow pipe of the first tidal pump or the second tidal pump is always horizontal when the tumbler type cultivation area tidal current pump oxygen increasing device is arranged on the seabed.
2. The tumbler-type aquaculture area tidal current pump oxygen increasing device as claimed in claim 1, wherein a clamp is clamped on the vertical downpipe.
3. The tidal current pump oxygenation device in a tumbler-type farm of claim 1, wherein the first tidal pump, the first flow guide plate, the second tidal pump, and the second flow guide plate are all made of PVC.
4. The tidal current pump oxygenation device in a tumbler type culture area of claim 1, wherein the first pile fixing frame, the second pile fixing frame and the third pile fixing frame are made of stainless steel.
5. The tumbler-type aquaculture area tidal current pump oxygen increasing device as claimed in claim 1, wherein the material of the fixing pegs is 45 steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811236472.1A CN109197744B (en) | 2018-10-23 | 2018-10-23 | Tumbler type culture area tidal current pump oxygenation device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811236472.1A CN109197744B (en) | 2018-10-23 | 2018-10-23 | Tumbler type culture area tidal current pump oxygenation device |
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| Publication Number | Publication Date |
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| CN109197744A CN109197744A (en) | 2019-01-15 |
| CN109197744B true CN109197744B (en) | 2021-01-26 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1347830A (en) * | 2000-10-08 | 2002-05-08 | 刘岗 | Assembled seamless container and its constituting system |
| CN203015639U (en) * | 2013-01-04 | 2013-06-26 | 杨成胜 | Multi-side three-dimensional fish bank |
| ES2555706A2 (en) * | 2014-07-01 | 2016-01-07 | Fº JAVIER PORRAS VILA | Mobile toy with oblique axes and weight at the ends of these axes (Machine-translation by Google Translate, not legally binding) |
| CN105660491A (en) * | 2016-03-24 | 2016-06-15 | 浙江大学 | Artificial downwelling device |
| CN105918230A (en) * | 2016-04-26 | 2016-09-07 | 浙江大学 | Tide pump artificial downwelling device |
-
2018
- 2018-10-23 CN CN201811236472.1A patent/CN109197744B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1347830A (en) * | 2000-10-08 | 2002-05-08 | 刘岗 | Assembled seamless container and its constituting system |
| CN203015639U (en) * | 2013-01-04 | 2013-06-26 | 杨成胜 | Multi-side three-dimensional fish bank |
| ES2555706A2 (en) * | 2014-07-01 | 2016-01-07 | Fº JAVIER PORRAS VILA | Mobile toy with oblique axes and weight at the ends of these axes (Machine-translation by Google Translate, not legally binding) |
| CN105660491A (en) * | 2016-03-24 | 2016-06-15 | 浙江大学 | Artificial downwelling device |
| CN105918230A (en) * | 2016-04-26 | 2016-09-07 | 浙江大学 | Tide pump artificial downwelling device |
Non-Patent Citations (1)
| Title |
|---|
| 《不倒钉的危害！（不容小视）》;金牛liyiheng;《金牛liyiheng的博客》;20140422;第1页 * |
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