CN204599011U - The tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring - Google Patents
The tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring Download PDFInfo
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- CN204599011U CN204599011U CN201520246864.1U CN201520246864U CN204599011U CN 204599011 U CN204599011 U CN 204599011U CN 201520246864 U CN201520246864 U CN 201520246864U CN 204599011 U CN204599011 U CN 204599011U
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- wave resistance
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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Abstract
The matrix pattern framework of steel pipe manufacturing, end, corner installing hanger, side is welded with steel railing and handrail, border steel pipe and central authorities' intersection steel pipe part filled plastics foaming body, another part installing two packs into/blow off valve, one packs into/draining pipe valve, each joint leads cable heaving pile tubing string bottom surface, and the equal sleeved floating block of free suspending weight assembly of corner, the free suspending weight assembly of corner hangs pouring weight, and fasten the hawser of lower main push-towing rope rope and stretch-draw damping sheet, by the hawser tying damping sheet of stretch-draw damping sheet, breeding net clothes hanging is connected on handrail and lower main push-towing rope rope, from mooring line one end be placed in mud face pouring weight and be connected, the pouring weight that the other end hangs with free suspending weight assembly is connected, for more reliable, the outer mooring mooring of affix.Wind wave resistance, from mooring, ecological, environmental protective, can, with fluctuation in stage heave, be the maximum feature of tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring.
Description
Technical field
The tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring, that the various degree of depth of solution is (shallow, in, the new-type economical net cage in waters deeply), when outstanding typhoon is not withdrawn or does not sink, still have reliable wind wave resistance safety, propose from mooring and the new paragon that outer mooring is combined, the invention belongs to ocean engineering field.
Background technology
Cage culture is the pith of marine economy, the net cage that the polyvinyl piping materials (being called for short HDPE) introduced by Norway at present makes is in full flourish, in the yellow Bohai Sea, the East Sea, the South Sea, all in a large amount of use, this with the floating of HDPE material making or floating type net cage, although floating type net cage has sink-float function, before typhoon, can certain depth be sunken to, evade the wave stroke that the water surface is maximum, but still have following fatal defect from this net cage of practice:
1. be not suitable with the impact of ocean current, just may deform when current speed only reaches 0.257m/s according to observations, when flow velocity reaches 1m/s, body is held in loss 80% cage culture, be limited by ocean current like this, just lose the better culture resources of a large amount of water quality give-and-take conditions.
2. because this kind of net cage of above-mentioned reason can only use at right up and down inner bay, because raiser swarms in this narrow and small inner bay, cause water quality in gulf very severe, even stinking smell assaulting one's nostrils, fish poor quality, fish disease is many, coastal city loses a most valuable line seascape, this just forces local government in order to city development, have to go by force to drive inner bay, offshore cage culture family, as Guangdong is being cleared up from west to Dongdu, toll breakdown inner bay fish culture net cage, but the technical support used because not having open waters, this can catch Wu Fish with regard to making the fisherman in these past be in, again without the very difficult condition of Hai Kegeng.
3.HDPE net cage intensity is low, plane stiffness is poor, easy unstability, and typhoon institute was to all causing local net cage to be annihilated in recent years, by the Oceanic and Fisheries Room 2011, Hainan Province dispatch in the end of the year " the guiding suggestion about resuming production after deep-water net cage culture calamity ", mooring techno-absence is main cause.
4. the sink-float function of floating type HDPE net cage; make net cage can be sunken to certain depth before typhoon, evade the wave stroke that the water surface is maximum, but improper owing to applying waters; dive wind wave resistance effect is little; because until 2014, China there is no the net cage being placed in Deepwater Open Sea district; owing to having a series of technology and difficult management; also large fund input is needed to build off-lying sea base and the boats and ships that shuttle back and forth, so being placed in Deepwater Open Sea district is not part nothing the matter.The existing so-called deep water mesh cage said is within being placed in depth of water 20m in fact, and offshore, less than 20km, compares offshore, inner bay net cage water slightly dark, the net cage that road is slightly far a little.This shallow, middle depth of water waters, wave effect is not obvious with depth attenuation, because only have as the ratio d/ λ > 0.5 of the depth of water with wavelength, when being deep water waters, wave effect is just obvious with depth attenuation, just may be down to 1/5 of the water surface in the water particle speed at half depth of water place, the place that this few Nian Congnan shied to North Platform wind, the destruction of the net cage equal entire PLA is exactly clear proof.To this, Inst of Huanghai Sea Marine Products, Chinese Academy of Aquatic Product Science customs director great waves, Lin Defang, Huang Bin, in China's " research and development of deep-sea wind wave resistance engineering " literary composition that yellow civilian Strong writes in the research of national " 863 " planning item (see reference document 1), in discussion in the precipitation layer of elevated live cage is stressed, be prototype to arrange the depth of water be 20m, article is thought " to the wave resistance of the net cage dive originally generally believed; subtract stream effect, also to be needed to be re-recognized by a large amount of experiments." therefore, address this problem and also must set about from reinforcement net cage intensity and rigidity, fit structure pattern and strengthening mooring are set about improving, and we praise measure and are:
A. made by polyvinyl piping materials (being called for short HDPE) and use the much higher steel tubing of intensity instead, some technical standard order tensile yield strength >=19mpa economized of HDPE, HDPE tensile yield strength is the highest is just 26mpa, therefore, even if adopt best HDPE also less than the 1/10! of steel
B. the main float tube of HDPE net cage mostly is diameter 250mm, wall thickness 15mm at present, and cross sectional moment of inertia is also not enough, and more Large Diameter Pipeline should be adopted to make.
C. hydrodynamic performances is chosen good, the version that capacity of anti-storm is strong.The novel tension leg type of free suspending weight as developed before recent two decades is exactly desirable version, and the type structure has following features:
● structure centre of buoyancy upper, center of gravity under, there is permanent stability and unconditionally balance, can not turning over.
● structure buoyancy is much larger than dead-weight balanced buoyancy, the buoyancy compartment of enough large buoyancy couples together with the ballast tank being positioned at the enough large ballast of column bottom, after the two is in poised state, therebetween just tension force is created, assuming that wind, wave, the horizontal force produced under flowing common action, it makes buoyancy aid generation depart from, if horizontal force produces the tilting complex torque of up time Needles, buoyancy then produces inverse time Needles righting moment, the two is just in time reverse, namely buoyancy can make it get back to equalization point by acting in opposition, thus realizes dynamic equilibrium, the principle of compliant type anchoring that Here it is.
● dynamic balance adds the reliability of mooring, and mooring force adds the restoring force of self for mooring force that outside provides.
● when being in poised state, structure has just had upright self-buoyancy, if net cage, with regard to energy self-stabilization, keeps box-shaped constant at seat the end.
D. adopt additional floating block, increase net cage buoyancy, to highlight tension leg loading characteristic.
E. hang at tension leg suspending weight block again and sit end pouring weight, this pouring weight and tension leg suspending weight interblock are long, and by putting down, between low tide two concrete ballast body, cable is lax determining, such net cage just with fluctuation in stage heave, and can have from mooring property.
F. adopt 4 Xiang Group to close form structure globalities better, anchoring system and waters availability higher, favourable reduction cost.
G. adopt bibliography [2] " can with the tension leg type deep water mesh cage of fluctuation in stage heave " patent, reduce net cage net cage mountain peak ripple with damping sheet, reduce net cage breakage risk.Meanwhile, cultivation fish Dung just and residual bait drop on damping sheet, mud face can not be fallen into and roll up pollution source, but be converted into other fish and species nutrient, make net cage become ecological environment-friendly type net cage.
H. bibliography [4] " air bag regulate buoyancy can with the flexible structure tension leg type deep water mesh cage of fluctuation in stage heave " patent is adopted, propose airbag aeration exhaust and make cylinder water filling or draining, air bag was just in case lost efficacy, note/draining the pipe valve still can installed by this casing routinely and note/blow off valve realize variable buoyancy function, be actually the dual safety guaranteeing buoyancy safety, solve sink and emerge type net cage note/draining puzzlement all the time.
I. outer mooring adopts bibliography [7] the tree-shaped single point mooring system patent No.: ZL201420521171.4, and net cage mooring adopts the float-type anchoring system of mooring Large marine production store oil wheel, makes net cage be in elastic bearing, realizes the power of unloading and subtracts power.
Tension leg type net cage TLC (Tension Leg Cages, referred to as TLC type net cage) oceanography institute of University Of Hainan anticipatory remark the 6th phase << fishery modernization >> in 2002 writes articles < and introduces a kind of marine fish farming tension leg net cage > and 2003.2 again write articles in " China Fisheries economy " the inspiration > that < investigates Norway offshore tension leg fish culture in net pen subsequently, point out that author passes through the investigation to Norway's seawater cage, tension leg fish culture in net pen is proposed very suitable to China's southeastern coastal areas popularization, advantage author assessment for tension leg net cage is: 1. capacity of anti-storm is stronger, it is introduced, TLC type net cage has lived through the test of the high stormy waves of 11.7m wave, safe and sound.The simpler cost of 2 structure is lower, and tension leg net cage compares with flexible cylindrical and rigidity biconial (dish-like as figure below) net cage, and structure is simpler, thus reduces cost.
But domesticly do not introduce TLC net cage so far, reason is failed by economic measures, the high withdrawal resistance solving balance tension can lean on the solid problem of Anchor.The knowledge that inventor herein builds based on offshore platform and experience, the difficult problem that the high withdrawal resistance proposing solution balance tension can lean on Anchor solid, and grind create series economic and practical, the tension leg type net cage of strong operability, in this patent by above-mentioned for reasonable combination technology, seek a kind of safer, more reliable, Anti-Typhoon, be applicable to ocean current comparatively urgency and the novel net cage without the open sea area of shield, particularly do not rely on water filling to sink these technical measures, can resist strenuously live typhoon by net cage system, it is deep-water netted case resisting wind and wave truly, simultaneously in this patent will first in the world, propose to be combined with additional mooring from mooring, and the innovation scheme of free suspending weight additional buoyancy block, it is far reaching that this tension leg type net cage for excellent performance is applied.
Bibliography
[1] " research and development of China's deep-sea wind wave resistance engineering " Inst of Huanghai Sea Marine Products, Chinese Academy of Aquatic Product Science customs director great waves, Lin Defang, Huang Bin, Huang Wen Strong
[2] " can with the tension leg type deep water mesh cage of the fluctuation in stage heave " patent No. 201320095246.2 inventor: ancient country dimension patentee: ancient country ties up
[3] " the tension leg type deep water mesh cage of band surface operations platform " patent No.: ZL201320111630.7 inventor: ancient country dimension patentee: ancient country ties up
[4] " air bag regulate buoyancy can with the flexible structure tension leg type deep water mesh cage of fluctuation in stage heave " patent No. ZL201320623481.2 inventor: ancient country dimension patentee: ancient country ties up
[5] " the anti-floating type tension leg structure HDPE net cage swinging plate of band " patent No.: ZL201420225823.X inventor: ancient country dimension patentee: ancient country ties up
[6] " free suspending weight is anti-the swings plate floating type belt tension leg Structure Quasi flexible environment friendly type HDPE net cage " patent No.: ZL 201420268075.3 inventor: ancient country dimension patentee: ancient country ties up
[7] " tree-shaped single point mooring system " patent No.: ZL201420521171.4 inventor: ancient country dimension patentee: ancient country ties up
Summary of the invention
In order to break through the limitation of HDPE net cage, seek a kind of safety, reliably, Anti-Typhoon, be applicable to the novel net cage in the comparatively anxious and unobstructed open sea area of ocean current, particularly do not rely on water filling and to sink these technical measures, by net cage system ability, do not sink also can resist live typhoon as oil platform, should adopt aforesaid method, be transformed from many aspects to HDPE net cage.For this reason, the technical solution of the utility model is:
1. the matrix pattern framework of steel tubing making, framework corner steel tube end part installing hanger, steel railing and steel handrail is welded with by net side, pond, one section in border steel pipe and central right-angled intersection two steel pipe, for the permanent buoyant tank of filled plastics foaming body, central authorities' right-angled intersection steel pipe part, / blow off valve is packed into for being equiped with two, one to pack into the/variable buoyancy compartment of draining pipe valve, a set of import/exhaust pipe valve coordinates internal airbag, another set of blow off valve is backup, to realize the reliable water filling drain function of variable buoyancy compartment.
2 in order to add the tension leg characteristic of macrostructure, cable heaving pile tubing string sleeved floating block is led in each joint bottom surface, the free suspending weight bar assembly also sleeved floating block of corner, lower suspension pouring weight, connecting line fastens lower main push-towing rope rope, below lower main push-towing rope rope, fasten another hawser for stretch-draw damping sheet, at this moment damping sheet in stretch-draw on hawser, damping sheet composite material skin or curtain are made, and establish the buoyant mass of the plastic foam material of perforate in the middle of damping sheet.
3 pouring weights hung with free suspending weight bar assembly from mooring line one end are connected, the other end is connected with the pouring weight being placed in mud face, double interblock length of warping winch is that tensioning state is as the criterion with high tide level, namely put down, between low tide pouring weight, cable is lax, such net cage just can with fluctuation in stage heave, and have from mooring property, namely outer mooring is not had can to survive in high sea yet, in order under extreme conditions survive, the outer mooring of affix, another mooring line i.e., one is bound on steel tube end part hanger, other end is bound in float-type anchoring system, corresponding auxiliary mooring line, one is bound on suspending weight bar assembly, other end is bound on mooring line
4. breeding net clothing top is articulated on the handrail of net cage, and bottom fastens on lower main push-towing rope rope jacket, and etting hawser of putting more energy into is bound in framework joint and leads on cable heaving pile tubing string, realizes the duplicate protection to etting.
5. matrix pattern framework joint lead cable heaving pile tubing string, simultaneously for placing tune pouring weight, by tune pouring weight net cage floading condition is finely tuned.
This patent application ocean engineering is ripe; reliably; the technology of extensive successful Application; for raiser provides a more firm, the better ecological environment-friendly type net cage of economy rational in infrastructure, workable, economical and practical, stronger. be combined with additional mooring from mooring, and the innovation scheme of free suspending weight additional buoyancy block; substantially increase net cage safety; outstanding advantage will become and march deep-sea, benefit fisherman, the reliable equipment of protection of the environment.
Accompanying drawing explanation
Fig. 1 is the utility model structural plan schematic diagram;
Fig. 2 is that the utility model structure cabin function divides floor map, and import/exhaust pipe valve, enters/draining pipe valve horizontal layout intention;
Fig. 3 is the vertical schematic diagram of the utility model structure;
Fig. 4 is that A amplifies axonometric three-dimensional view, represents plastic foam material, shrouding, main hanger in the pipe that joint place welds, leads cable heaving pile tubing string, railing and handrail and each parts connection diagram, particularly illustrate and be set with buoyant mass;
Fig. 5 is B amplification view, represents each parts connection diagram of free suspending weight bar assembly, particularly illustrates and be set with buoyant mass;
Fig. 6 is the pouring weight axonometric three-dimensional view with concrete for making;
Fig. 7 is 2--2 cutaway view, represents that central variable buoyancy compartment steel pipe Inner puts air bag, import/exhaust pipe valve, note/draining pipe valve and railing post and arranges schematic diagram;
Fig. 8 is C amplification view, represents central right-angled intersection fastener for connection welding method;
Fig. 9 is damping sheet horizontal layout schematic diagram;
Figure 10 is that damping sheet connects axonometric three-dimensional view, describes damping sheet drawknot cable and the method for attachment of free suspending weight assembly especially;
Figure 11 is that damping is prevented swinging plate central authorities floating block axonometric three-dimensional view;
Figure 12 adjusts pouring weight scheme of installation;
Figure 13 adjusts pouring weight axonometric three-dimensional view;
Figure 14 is that elevation is arranged in mooring, and additional mooring is float-type anchoring system;
Figure 15 is mooring plane of arrangement figure, and additional mooring is float-type anchoring system;
Figure 16 arranges elevation from anchoring system;
Figure 17 is that etting and etting are put more energy into hawser tying axonometric three-dimensional view.
Wherein: 1. permanent buoyant tank steel pipe, 101. plastic foam material, 102. shrouding, 2. variable buoyancy compartment steel pipe, the 201. import/exhaust pipe valves connected with air bag, 202. intake/exhaust valve pipe valve import/exhaust pipe valves for subsequent use, 203. enter/draining pipe valve, 204. air bag, 205. welding are with connecting short tube, 206. corner welding line, 3. lead cable heaving pile tubing string assembly, 301. standpipe, 302. standpipe stiffeners, 303 adjust pouring weight 304 to adjust pouring weight through hole, 305. tubaeform plastics guide holes, 4. free suspending weight assembly, the 401. suspending weight bodies of rod, 402. suspension ring, 403. buoyant mass, 404. connection cable, 405. pouring weight concrete for making, 406. pouring weight end face suspension hooks, 407. pouring weight bottom surface suspension hooks, 408. from mooring line, 5. main hanger assembly, 501. shackle plate, 502. loser, 503. add Strong ring, 6. railing post, 601. railing post stiffeners, 7. handrail tube, 8. descend main push-towing rope rope, 9. lead cable heaving pile tubing string link, 10. etting, 1001. ettings are put more energy into hawser, 11. mooring lines, 12. damping sheet drawknot cables, 13. damping sheet assemblies, the damping sheet that 1301. composite material skin or curtain are made, 1302. damping sheets connect keyhole, 1303. drawknot rope, the damping sheet floating block of 1304. perforates, 1305 damping sheet drawknot cable joining shackles, 14. float-type anchoring systems.
Embodiment
Because the utility model has followed the essential structure of traditional steel framework, be easy to make, add that clear explanation done again by drawing, as long as conscientious construction in line with the drawings, but should following points be paid close attention to:
1. pipeline section connects: pipeline section is long is generally 6m, and will reach design length by spreading, consider the welding method of spreading, lay special stress on will adapt to Site Welding.
2. the making of hanger class: hanger assembly 5, this kind of member stress is large, damage impact large, in Offshore Engineering Components classification, belong to special class and a class, postwelding will do ultrasonic examination inspection, and net cage makes and limit by cost, ocean engineering requirement can not be applied mechanically, but following requirement is reasonable, feasible, should strictly observe in making:
Strictly observe building process, Material selec-tion should select the steel that solderability is good, welding link should have perfect welding procedure, weld seam detection program, and welding personnel should hold qualified welder's certificate, forbids without card or rank deficient personnel welding.
3. the anticorrosion of structure has kinds of schemes available, can be required to determine by service life and owner.
After completing each structure manufacture by land, can proceed to the Attention problems stage, its program is:
1. before descending water, cable heaving pile tubing string lower end sleeved floating block 403 is led in each joint bottom surface, and the free suspending weight bar assembly also sleeved floating block 403 of corner, buoyant mass 403 is market commercialisation products, and market is bought.
2. first install float-type anchoring system 14 at assigned address, fasten mooring line 11, cable-end fastens mark ball float;
3. the utility model has taken into full account the operability of Attention problems, net cage frame can haul out sea as HDPE-sample is floating, suspension hook bottom pouring weight 405, mount one or one group of pouring weight again, after release position, hawser is worn to be suspended to and is led cable heaving pile tubing string upper end, this process is as pipeline poling, very conventional operation, then hang or push water, each hawser is fastened under diver assists, fasten etting, so far Attention problems work is completed, note it being suspension hook bottom pouring weight 405, mount one or one group of pouring weight again, cable is long to be controlled except being tensioning state except high tide level, flat, between low tide two concrete ballast body, cable is lax.
Find out that from above Attention problems is similar with HDPE net cage, but the utility model can rise and fall, with fluctuation in stage heave, self-stabilization, multiple protective, stronger more just, more reliable, the ecological, environmental protective of mooring, economical and practical, be a desirable deep water mesh cage.
Claims (6)
1. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring, feature is the matrix pattern framework that steel tubing makes, framework corner steel tube end part installing hanger, steel railing and steel handrail is welded with by net side, pond, one section in border steel pipe and central right-angled intersection two steel pipe, for the permanent buoyant tank of filled plastics foaming body, central authorities' right-angled intersection steel pipe part, / blow off valve is packed into for being equiped with two, one to pack into the/variable buoyancy compartment of draining pipe valve, a set of import/exhaust pipe valve coordinates internal airbag, and another set of blow off valve is backup.
2. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system according to claim 1 mooring, feature is that cable heaving pile tubing string sleeved floating block is led in each joint bottom surface, the free suspending weight bar assembly also sleeved floating block of corner, lower suspension pouring weight, connecting line fastens lower main push-towing rope rope, another hawser for stretch-draw damping sheet is fastened below lower main push-towing rope rope, damping sheet in stretch-draw on hawser at this moment, damping sheet composite material skin or curtain are made, and establish the buoyant mass of the plastic foam material of perforate in the middle of damping sheet.
3. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system according to claim 1 mooring, feature is that the pouring weight hung with free suspending weight bar assembly from mooring line one end is connected, the other end is connected with the pouring weight being placed in mud face, double interblock length of warping winch is that tensioning state is as the criterion with high tide level, and namely between flat, low tide pouring weight, cable is lax.
4. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system according to claim 1 mooring, feature is additional outer mooring, mooring line one is bound on steel tube end part hanger, other end is bound in float-type anchoring system, corresponding auxiliary mooring line, one is bound on suspending weight bar assembly, and other end is bound on mooring line.
5. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system according to claim 1 mooring, feature is that breeding net clothing top is articulated on the handrail of net cage, bottom fastens on lower main push-towing rope rope jacket, and etting hawser of putting more energy into is bound in framework joint and leads on cable heaving pile tubing string.
6. the tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system according to claim 1 mooring, feature be matrix pattern framework joint lead cable heaving pile tubing string, simultaneously for placing tune pouring weight.
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| CN201520246864.1U CN204599011U (en) | 2015-04-21 | 2015-04-21 | The tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring |
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| CN201520246864.1U CN204599011U (en) | 2015-04-21 | 2015-04-21 | The tension leg wind wave resistance net cage of free suspending weight additional buoyancy block dual system mooring |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889777A (en) * | 2018-01-17 | 2018-04-10 | 济南昌林气囊容器厂有限公司 | A kind of float structure of floatable deep-sea air bag aquaculture net cage |
| CN110786280A (en) * | 2018-08-02 | 2020-02-14 | 天津市海王星海上工程技术股份有限公司 | Stretching type bottom-sitting net cage |
| CN112640824A (en) * | 2020-11-13 | 2021-04-13 | 浙大宁波理工学院 | Multifunctional assembled concrete seawater net cage |
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2015
- 2015-04-21 CN CN201520246864.1U patent/CN204599011U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107889777A (en) * | 2018-01-17 | 2018-04-10 | 济南昌林气囊容器厂有限公司 | A kind of float structure of floatable deep-sea air bag aquaculture net cage |
| CN110786280A (en) * | 2018-08-02 | 2020-02-14 | 天津市海王星海上工程技术股份有限公司 | Stretching type bottom-sitting net cage |
| CN112640824A (en) * | 2020-11-13 | 2021-04-13 | 浙大宁波理工学院 | Multifunctional assembled concrete seawater net cage |
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Effective date of registration: 20170306 Address after: 570208 Hainan Province, Haikou city haidiandao Meilan District No. 1 South Zhao Wan Xing Lu Liwan Lok Hin 804 Patentee after: China Ocean Engineering (Hainan) Co., Ltd. Address before: 510260 Guangdong city of Guangzhou province Haizhuqu District Xingang West Tsui discovery Graceland home A-601 Patentee before: Gu Guowei |
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Granted publication date: 20150902 Termination date: 20180421 |