CN1468509A

CN1468509A - Elevated live cage

Info

Publication number: CN1468509A
Application number: CNA021353166A
Authority: CN
Inventors: 关长涛; 林德芳; 黄滨; 黄文强; 尉云乐; 丁士钊
Original assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Current assignee: Yellow Sea Fisheries Research Institute Chinese Academy of Fishery Sciences
Priority date: 2002-07-20
Filing date: 2002-07-20
Publication date: 2004-01-21
Anticipated expiration: 2022-07-20
Also published as: CN1178574C

Abstract

The elevated net cage consists of net cage and inflating and deflating elevator, and the inflating and deflating elevator is one sink-float barrel below the net cage and connected to the net cage via rope or linking rod. The sink-float barrel includes an upper sealed cavity, a lower inflating cavity with bottom opening, an air inflating pipe through the sealed cavity and with one end communicated to the inflating cavity and the other end connected to a float body, and the sink-float barrel is connected via rope to a weight. The inflating and deflating elevator has control system comprising terminal control box, air inlet and outlet valves in air pipe, compressed air cylinder or air compressor, with the air outlet valve being a remote controlled one. The elevated net cage may ascend and descend smoothly and reliably and may be remote controlled.

Description

Elevated live cage

Affiliated technical field

The invention belongs to the mariculture isolated plant, is a kind of elevated live cage specifically.

Background technology

Utilizing wave height to increase the Wave Theory of specific dampings such as being with the equal difference of the depth of water, net cage is deposited to certain depth water layer under water, is the important technique measure of net cage wind wave resistance.Elevated live cage has four kinds of patterns basically in the world at present.A kind of is the dish-shaped net cage of U.S. Ocean Spar Technology company.The similar flying saucer of this net cage appearance and modeling utilizes the control of gin pole and balance to realize the net cage lifting.Second kind is the steel-tube construction sink and emerge type net cage of Japan, and this net cage utilizes the filling of several type inflatable floats, draining, and fixedly float and balance are controlled the lifting of net cage.The third is the two-tube circular net cage of state such as Norway exploitation, come-up and dive that this net cage utilization is inflated in the net cage frame hollow circular tube, draining realizes net cage.The 4th kind is to adopt water pump notes, drainage pattern, and water filling and draining realize lifting in buoyancy aid, but because the restriction on the net cage water-filling float structure can not be used multistage pump and immersible pump, so practical application is few.The two-tube circular net cage of Norway is controlled bad grasp in net cage lifting process balance.So the net cage lifting technology still improves ripe inadequately.

Summary of the invention

The objective of the invention is to be tending towards maximizing at present net cage for sea farming, culture the sea area by the inner bay phytal zone to the open sea area of 20-30m deep water current situation, solve the wind wave resistance technology of net cage, improve net cage integral body and resist the ability of high wind, billow, thereby avoid net cage breakage and the broken fish of net to escape the economic loss that is caused.

And higher at external elevated live cage cost, what have does not resolve key technical problems such as infall process balance control, the invention provides a kind of elevated live cage, simple in structure, easy to operate, not only make the net cage lifting steadily, reliably, and can realize the Remote operation of settlement Control.

Technical scheme of the present invention is: a kind of elevated live cage, by net cage frame, etting, heavy stone, rope, bracing ring, fill the exhaust elevator and form, it is characterized in that the described exhaust elevator that fills is that a tube that drifts along that is arranged under the net cage is connected with net cage by rope or connecting rod, a top of drifting along is a sealed cavity, there is an appendix to pass in the inflatable chamber that sealed cavity feeds a bottom of drifting along, the appendix other end connects a buoyancy aid, a bottom surface of drifting along has the inflatable chamber opening, and the tube that drifts along connects a heavy stone by rope.

The inflatable chamber opening of a described bottom of drifting along is circular a closing in, and the closing in edge is provided with a circle, evenly has a plurality of air vents on the inclination annular wall of mouth.

Described control system of filling the exhaust elevator is made up of inlet and outlet valve, compressed gas cylinder or air compressor in terminal control cabinet, the appendix.

Air bleeding valve in the described appendix is a distance type valve.

The described tube bottom edge that drifts along is provided with the rete cord plate, has the rope connecting hole on the rete cord plate, and rope one end that connects heavy stone penetrates respectively in the corresponding rope connecting hole and connects.

Described net cage bottom connects with the rope that the tube that drifts along is connected heavy stone by two ropes at least.

Described appendix stretches into one section of a top seal cavity that drifts along and is stereoplasm tube, and its upper end links to each other with pneumatic connector by screw thread, and sealing ring is set between the two, and the upper end of pneumatic connector picks out soft appendix, and pneumatic connector is provided with fender bracket outward.

The present invention compared with prior art has many advantages and good effect:

(1) adopt the steady lifting that the exhaust elevator can be realized net cage integral body of filling of the present invention, avoid other elevated live cage sink or floating-upward process in problems such as the net cage that occurs whole uneven and the net cage upset that causes or angle of inclination be excessive.

(2) length by adjust connecting the rope between tube and the heavy stone of drifting along or by control fill, the unlatching size of drain tap, can realize the control of net cage ascending, descending water layer and the control of net cage ascending, descending speed.

(3) charge valve and air bleeding valve are housed in the appendix, air bleeding valve is a distance type valve, by the receiving remote command signal, realizes the remote control operation to the net cage lifting.

(4) by realizing the lifting of net cage, the destruction that can effectively avoid typhoon that net cage is caused guarantees the safety of net cage as the carrier platform of breeding fish.

(5) net cage is deposited to certain water layer, can reduces because the harm that generation of sea surface red tide and water environment pollution etc. cause fish culture in net pen.

(6) the present invention can be used for the lifting control of any structure net cage, and it is low to have cost, and lifting control steadily, reliably, and is easy to operate, characteristics such as long service life.

Description of drawings

Fig. 1 is the circular elevated live cage overall structure of HDPE of the present invention figure;

Fig. 2 is an axial section structure chart that drifts along of elevated live cage of the present invention;

Fig. 3 is a upward view that drifts along of elevated live cage of the present invention.

Embodiment

Referring to Fig. 1-Fig. 3; a kind of elevated live cage; by net cage frame 2; etting 3; heavy stone 8; 9; rope 5; bracing ring 6; filling the exhaust elevator forms; filling the exhaust elevator and be one is arranged at circle under the net cage tube 7 that drifts along and is connected (or welding) with the coating steel pipe bracing ring 6 of net cage by rope 5 (or connecting rod); drift along the tube 7 tops be sealed cavity; there is a hard appendix 13 to pass in the inflatable chamber that sealed cavity feeds tube 7 bottoms of drifting along; its upper end of exposing tube 7 end faces that drift along links to each other with a pneumatic connector 17 by screw thread; rubber seal 12 is set between the two; airline hose 4 other ends that the upper end of pneumatic connector 17 picks out connect a buoyancy aid 1, outside pneumatic connector 17 angle steel fender bracket 16 are set.The inflatable chamber opening offered of tube 7 bottom surfaces that drifts along is circular a closing in, and the closing in edge is provided with a circle 15, evenly has a plurality of air vents 18 on the inclination annular wall of mouth.When inflation in the tube 7 that drifts along, when air vent 18 exhausts on the tube 7 that drifts along, can stop inflation.Tube 7 bottom margins that drift along are provided with rete cord plate 14, have the rope connecting hole on the rete cord plate 14, and rope 11 1 ends that connect heavy stone 8 penetrate respectively in the corresponding rope connecting hole and connect.The bracing ring 6 of net cage bottom connects by four ropes 10 are connected heavy stone 8 with the tube 7 that drifts along rope 11.Net cage frame 2 connects corresponding little heavy stone 9 by many ropes 5.

Fill the control system of exhaust elevator and be made up of inlet and outlet valve, compressed gas cylinder or air compressor in terminal control cabinet, the appendix, its air bleeding valve is a distance type valve.

Its lifting operation principle is as follows:

If net cage gross weight or heavy only power (not comprising heavy stone 8, little heavy stone 9 and the tube 7 that drifts along) are P ₁, net buoyancy is F ₁, the clean heavy power of the tube 7 that drifts along is P ₂, net buoyancy is F during come-up ₂, heavy stone 8 clean heavy power are P ₃, little heavy stone 9 total clean heavy power are P ₄(1) net cage sinks: by counterweight, make

P (P = Σ_{i = 1}^{4} P_{i}) > F_{1}

(during sinking, water inlet in the inflatable chamber of tube 7 bottoms of drifting along has only clean heavy power, no buoyancy), at this moment, the gravity of net cage is greater than buoyancy, and net cage sinks; (2) after net cage sank to heavy stone 8 contact seabeds, the down force that heavy stone 8 acts on net cage was zero, at this moment

Σ_{i = 1}^{3} P_{i} < F_{1} <, Σ_{i = 1}^{4} P_{i}

Be the net cage overall buoyancy greater than heavy power, but can not mention sinking stone 8, net cage is in near-bottom quick condition under water; (3) net cage come-up: by fill, the control system of exhaust elevator and appendix 4 be to the inflation interacvity air-filling of the tube 7 that drifts along, and gets rid of a tube maritime interior waters, the buoyancy of the tube 7 that drifts along increases, when increasing to gross buoyancy

F (F = Σ_{i = 1}^{2} F_{i})

Greater than total heavy power

P (P = Σ_{i = 1}^{4} P_{i})

The time, net cage begins come-up.Wherein, design the tube 7 total net buoyancy F that drift along ₂Less than big heavy stone weight P ₃Thereby the tube 7 of can guaranteeing to drift along can not float at the bottom of the contact net always.Tube 7 the buoyancy that drifts along this moment increases gradually, and therefore, net cage floats gradually; (4) along with net cage frame 2 floats gradually, surface, the net cage overall buoyancy reduces gradually, and when total net buoyancy F equaled always to sink power P only, net cage was in poised state.Close the inlet and outlet valve this moment, and net cage is bubbled through the water column.(5) next interim when typhoon, open air bleeding valve, exhausts in the tube 7 that drifts along, water inlet, net cage sinks; After typhoon, close air bleeding valve, open intake valve, inflation, draining, net cage come-up.

Above lifting process can manually be controlled, and also can realize operation automatically by the reception of remote signal.

Claims

1, a kind of elevated live cage, by net cage frame, etting, heavy stone, rope, bracing ring, fill the exhaust elevator and form, it is characterized in that the described exhaust elevator that fills is that a tube that drifts along that is arranged under the net cage is connected with net cage by rope or connecting rod, a top of drifting along is a sealed cavity, there is an appendix to pass in the inflatable chamber that sealed cavity feeds a bottom of drifting along, the appendix other end connects a buoyancy aid, a bottom surface of drifting along has the inflatable chamber opening, and the tube that drifts along connects a heavy stone by rope.

2, according to the described elevated live cage of claim 1, the inflatable chamber opening that it is characterized in that a described bottom of drifting along is circular a closing in, and the closing in edge is provided with a circle, evenly has a plurality of air vents on the inclination annular wall of mouth.

3,, it is characterized in that described control system of filling the exhaust elevator is made up of inlet and outlet valve, compressed gas cylinder or air compressor in terminal control cabinet, the appendix according to claim 1 or 2 described elevated live cages.

4,, it is characterized in that the air bleeding valve in the described appendix is a distance type valve according to the described elevated live cage of claim 3.

5, according to claim 1 or 2 described elevated live cages, it is characterized in that the described tube bottom edge that drifts along is provided with the rete cord plate, have the rope connecting hole on the rete cord plate, rope one end that connects heavy stone penetrates respectively in the corresponding rope connecting hole and connects.

6,, it is characterized in that described net cage bottom connects with the rope that the tube that drifts along is connected heavy stone by two ropes at least according to claim 1 or 2 described elevated live cages.

7, according to claim 1 or 2 described elevated live cages; it is characterized in that described appendix stretches into one section of a top seal cavity that drifts along and is stereoplasm tube; its upper end links to each other with pneumatic connector by screw thread; sealing ring is set between the two; the upper end of pneumatic connector picks out soft appendix, and pneumatic connector is provided with fender bracket outward.

8, according to the described elevated live cage of claim 6; it is characterized in that described appendix stretches into one section of a top seal cavity that drifts along and is stereoplasm tube; its upper end links to each other with pneumatic connector by screw thread; sealing ring is set between the two; the upper end of pneumatic connector picks out soft appendix, and pneumatic connector is provided with fender bracket outward.