CN109229298B - Corrosion-resistant marine organism-proof device for ship - Google Patents
Corrosion-resistant marine organism-proof device for ship Download PDFInfo
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- CN109229298B CN109229298B CN201811055045.3A CN201811055045A CN109229298B CN 109229298 B CN109229298 B CN 109229298B CN 201811055045 A CN201811055045 A CN 201811055045A CN 109229298 B CN109229298 B CN 109229298B
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- conductive
- rotating shaft
- side wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B59/00—Hull protection specially adapted for vessels; Cleaning devices specially adapted for vessels
- B63B59/04—Preventing hull fouling
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
Abstract
The invention discloses an anti-corrosion and anti-marine organism device for a ship.A rotating shaft and a first positive electrode are arranged on a central shaft in a sea chest and consist of a plurality of electrode rods which are arranged at intervals to form a circular array, the periphery of the rotating shaft is coaxially provided with a plurality of circular arrays, and the first end of an electrolytic bin is communicated with an outlet of the sea chest; the second positive electrode is rotatably arranged in the electrolytic bin and comprises a conductive shell, the conductive shell is of a cylindrical cavity structure, the central axis of the conductive shell is respectively superposed with the central axes of the electrolytic bin and the seabed door, a plurality of electrode plates are led out from the radial inner side wall of the conductive shell to the cavity in the cavity of the conductive shell, and the electrode plates are sequentially arranged in the conductive shell at intervals to form a bent one-way channel; the periphery of the conductive shell is axially provided with a helical blade which is in conductive connection with the conductive shell; the invention effectively solves the technical problem of low treatment efficiency of seawater corrosion prevention and marine organism prevention.
Description
Technical Field
The invention relates to the technical field of ship corrosion prevention, in particular to a corrosion and marine organism prevention device for a ship.
Background
The ship hull, steel structure, sea water pipeline and sea water cooling system in the marine environment are all damaged by the double hazards of sea water corrosion and marine organism pollution. In seawater, there is severe electrochemical corrosion, and certain corrosion protection measures need to be taken. The paint protection technology uses paint to form a film on the surface of a protected member, plays a role in corrosion protection, is an effective method for corrosion protection, and is widely applied. However, due to the influence of the integrity of the film-forming coating, such as coating defects, collision damage, aging, coating capillary pore penetration and the like, certain corrosion influence still exists, the safety of a ship body, a steel structure and the like is endangered, and the subsequent maintenance cost is influenced. Therefore, further additional protective measures need to be taken.
The attachment and growth of marine organisms in the seawater pipeline and the cooling system can reduce the effective diameters of the seawater cooling pipeline and the heat exchanger condensation pipeline, reduce the flow of seawater and reduce the cooling efficiency; once the attached organisms in the pipeline fall off, the attached organisms can block the valve and the pipe orifice of the cooler, and the pipeline is completely blocked in serious conditions, so that the shutdown and production halt are caused, and huge economic loss is caused. In addition, marine fouling may also increase the vessel's sailing resistance; promote corrosion and cause crevice corrosion; failure of instrumentation and equipment in seawater; absorbing sound energy to disable or defeat the acoustic instrument; the cross-sectional area of the piles and columns of the buildings in the sea is increased, and the impact force of waves and ocean currents is increased; changing the depth of floating bodies in water such as mines and the like; blocking the meshes; compete for attaching bases and baits with cultured shellfish and algae. Therefore, the fouling problem caused by the attachment of marine organisms is always troubled by human beings since the development and utilization of marine resources.
At present, marine biofouling is mainly controlled by physical methods. Specifically, the physical method usually employs an impressed current method, i.e., electrolysis of heavy metals such as copper and aluminum, electrolysis of seawater, etc., and the principle is to kill and inhibit marine organisms by ions generated by an electrochemical method, or to recombine chemical ions to form a certain colloidal protective layer to slow down the corrosion rate. However, the current method has limited antifouling capacity and treatment capacity, and cannot rapidly treat water to reach the use standard.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and to provide at least the advantages described later.
The invention also aims to provide an anticorrosion marine organism prevention device for ships, which is provided with an aluminum electrode and a copper electrode which rotate synchronously, so that seawater is fully contacted with the aluminum electrode and the copper electrode to generate more cuprous ions and aluminum ions, the treatment capacity of the seawater is improved, meanwhile, the automatic decontamination effect on the surfaces of the aluminum electrode and the copper electrode is realized along with the rotation of the aluminum electrode and the copper electrode, and the reduction of the electrolytic activity caused by the covering of the surfaces of the aluminum electrode and the copper electrode in a static state is prevented.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided an anticorrosive marine growth prevention device for a ship, comprising:
the sea chest door is characterized in that a rotating shaft is arranged on an inner central shaft of the sea chest door, the rotating shaft is made of conductive metal, a filter plate is installed at the inlet of the sea chest door, the first end of the rotating shaft is rotatably installed in the center of the filter plate, and the rotating shaft is in insulation connection with the filter plate;
the first positive electrode consists of a plurality of electrode rods which are arranged at intervals to form a circular array, the periphery of the rotating shaft is coaxially provided with a plurality of circular arrays, the circular arrays are connected in a conductive interval mode, and the circular array at the innermost side is connected to the rotating shaft in an insulating mode;
the electrolytic bin is of a conductive cylindrical cavity structure, and a first end of the electrolytic bin is communicated with an outlet of the seabed door;
the second positive electrode is rotatably arranged in the electrolytic bin and comprises a conductive shell, the conductive shell is of a cylindrical cavity structure, a central shaft of the conductive shell is respectively superposed with central shafts of the electrolytic bin and the seabed door, a plurality of electrode plates are led out from the radial inner side wall of the conductive shell to the cavity in the cavity of the conductive shell, and the electrode plates are sequentially arranged in the conductive shell at intervals to form a bent unidirectional channel; the periphery of the conductive shell is axially provided with a helical blade, the helical blade is screwed into the second axial end of the electrolytic bin, and the helical blade is electrically connected with the conductive shell; and
the constant current instrument is provided with three positive electrode output ends, wherein a first positive electrode output end is connected with the first positive electrode, a second positive electrode output end is connected with the second positive electrode, a third positive electrode output end is connected with the rotating shaft, and a negative electrode output end of the constant current instrument is respectively connected with the submarine gate and the electrolytic bin shell;
the two axial ends of the second anode electrode are rotatably arranged on the inner side walls of the two axial ends of the electrolytic bin, a motor is arranged on the outer side of the second end of the electrolytic bin, and a rotating shaft of the motor penetrates through the side wall of the second end of the electrolytic bin and is connected with the center of the second end of the second anode electrode; the space between the outer side of the conductive shell and the electrolytic bin is communicated with the outlet of the seabed door, a first through hole is arranged on the radial side wall of the second end of the conductive shell in a penetrating way, a second through hole is arranged in the center of the side wall of the first end of the conductive shell, the second through hole extends outwards to form a circular interface, a first hollow-out insulating connecting seat is arranged in the circular interface, an output pipeline is sleeved on the periphery of the circular interface, the first end of the output pipeline is connected with the round interface in a rotating and sealing way, the first end of the output pipeline is communicated with the inside of the conductive shell through a hollow-out part on the first insulating connecting seat, the second end of the output pipeline is led out from the channel between the seabed door and the electrolytic bin, and a water delivery pump is arranged at the second end of the output pipeline, and the second end of the rotating shaft penetrates through the output pipeline and is connected to the first insulation connecting seat.
Preferably, the center of the inner side wall of the filter plate is provided with a first bearing, the first bearing and the filter plate are arranged in an insulating manner, the first end of the rotating shaft is rotatably connected to the center of the filter plate through the first bearing, and the rotating shaft is composed of a titanium substrate and a ceramic metal oxide coating covering the outer surface of the titanium substrate.
Preferably, the specific structure of the first anode electrode includes:
the conductive connecting seat comprises a plurality of concentrically arranged conductive ring bodies and a supporting piece which is conductively connected between every two adjacent conductive ring bodies, a plurality of conductive connecting buckles are arranged on the conductive ring bodies at equal intervals, a conductive contact ring is arranged on the periphery of the conductive ring body on the outermost side at concentric intervals, and the conductive contact ring is conductively connected with the conductive connecting seat;
the insulating connecting buckles are concentrically arranged at the centers of the conductive connecting seats, the insulating connecting buckles are connected with the conductive ring bodies on the innermost side, the insulating connecting buckles are fixed on the periphery of the rotating shaft, at least two ends of the rotating shaft are respectively provided with one conductive connecting seat, and the conductive connecting buckles on the conductive connecting seats correspond to one another; and
the two ends of the electrode bar are respectively connected to the conductive connecting seats at the two ends of the rotating shaft through the conductive connecting buckles, and the conductive ring bodies at the two sides and the electrode bar connected between the conductive ring bodies form a circular array.
Preferably, the electrode rod and the support member are made of aluminum, the length of the electrode rod is smaller than that of the rotating shaft, the first anode electrode and the inner wall of the sea chest are arranged at intervals, a first conductive contact head penetrates through the side wall of the sea chest corresponding to one of the conductive connecting seats, and the conductive contact ring is connected with the first positive output end through the first conductive contact head;
the first conductive contact head comprises a conductive rod and a conductive shoe, the conductive rod vertically penetrates through the side wall of the sea chest, the conductive rod is connected with the side wall of the sea chest in an insulating mode, the first positive output end is connected with the outer side end of the conductive rod, the conductive shoe is arranged at the inner side end of the conductive rod, a guide groove in sliding fit with the conductive contact ring is formed in the conductive shoe, a conductive contact part is arranged in the guide groove, and the conductive contact part is in conductive connection with the bottom of the guide groove through an elastic piece.
Preferably, a fan wheel is arranged at the inlet of the sea chest and located between the filter plate and the first positive electrode, the diameter of the fan wheel is not smaller than that of the conductive connecting seat, a second bearing is arranged at the first end of the rotating shaft in an insulating mode, and the center of the fan wheel is arranged on the rotating shaft in a rotating mode through the second bearing.
Preferably, a metal plate is arranged between the sea chest outlet and the first anode electrode, the center of the metal plate is connected to the rotating shaft, the material of the metal plate is consistent with that of the rotating shaft, the diameter of the metal plate is not smaller than that of the conductive connecting seat, and a plurality of third through holes are formed in the metal plate in a penetrating mode.
Preferably, the subsea door is communicated with the electrolytic bin through a pipeline, the subsea door, the pipeline and the electrolytic bin shell are connected to form an equipotential body, and the pipeline is connected with the negative electrode output end of the constant current instrument;
the second end of the rotating shaft penetrates through the pipeline and is connected with a first insulation connecting seat on the second anode electrode, a second conductive contact head penetrates through the side wall of the pipeline and is located in the pipeline, a ring body protrusion is arranged on the rotating shaft in a protruding mode, the ring body protrusion is in conductive sliding contact with the second conductive contact head, the rotating shaft passes through the second conductive contact head and is connected with the third anode output end, and the second conductive contact head is consistent with the first conductive contact head in structure.
Preferably, a plurality of electrode plates are respectively led out from two opposite sides of the inner side wall of the conductive shell, the electrode plates are arranged in parallel, the electrode plates on the two sides are mutually staggered, and a certain distance is reserved between the electrode plates and the inner side wall of the conductive shell on the opposite side; the electrode plate inclines towards the first end of the electrolytic bin, and the inclination angle is 30-70 degrees.
Preferably, the second anode is made of copper, the first end of the conductive shell is connected with the inner side wall of the first end of the electrolytic bin through an insulating ring gasket, the insulating ring gasket is arranged on the periphery of the inlet of the electrolytic bin, a first annular guide rail is arranged on the side wall of the second end of the insulating ring gasket, a first rolling piece is arranged on the side wall of the first end of the conductive shell, and the first rolling piece is limited to move in the first annular guide rail;
the second through hole is positioned in the center of the insulating ring gasket, the insulating ring gasket radially penetrates through a plurality of fourth through holes, and the fourth through holes are communicated with the pipeline and the outer space of the conductive shell;
the outer diameter of the output pipeline is smaller than the inner diameter of the pipeline, at least one rotary sealing ring is arranged between the inner side wall of the first end of the output pipeline and the outer side wall of the circular connector, and the output pipeline is fixed on the pipeline and is led out from the pipeline.
Preferably, a first insulating spacer is arranged on the inner side wall of the second end of the electrolytic bin, an annular conductive sliding rail is arranged between the second end of the conductive shell and the first insulating spacer, a second rolling part is arranged on the side wall of the second end of the conductive shell, the second rolling part moves in the annular conductive sliding rail, and the conductive shell is in conductive contact with the annular conductive sliding rail;
the motor is arranged on the outer side wall of the second end of the electrolytic bin through a second insulating spacer, a second insulating connecting seat is arranged in the center of the outer side wall of the second end of the conductive shell, a rotating shaft of the motor sequentially penetrates through the second insulating spacer, the side wall of the second end of the electrolytic bin, the first insulating spacer and the second insulating connecting seat to be fixed, and the rotating shaft is connected with the outer side wall of the second end of the electrolytic bin through an insulating sliding ring;
the side wall of the second end of the electrolytic bin is provided with a conductor in a penetrating mode, the first end of the conductor is in conductive contact with the annular conductive sliding rail, the second end of the conductor is led out of the electrolytic bin and is connected with the second anode output end of the constant current instrument, and the conductor is in sealing contact with the outer side wall of the second end of the electrolytic bin through an insulating piece.
The invention at least comprises the following beneficial effects:
1. the invention is provided with the aluminum electrode and the copper electrode which rotate synchronously, so that seawater is fully contacted with the aluminum electrode and the copper electrode to generate more cuprous ions and aluminum ions, the corrosion-resistant and marine organism-resistant treatment efficiency of the seawater is improved, and the rapid water taking is realized;
2. the aluminum electrode and the copper electrode synchronously and rapidly rotate, so that the automatic decontamination capability of the surfaces of the aluminum electrode and the copper electrode is improved, the electrolytic activity is prevented from being reduced due to the fact that the surfaces of the aluminum electrode and the copper electrode are covered in a static state, and the treatment efficiency of seawater is further improved;
3. the electric field distribution is optimized, a rotating shaft with positive electricity is arranged in the sea chest at the same time, and the sea chest and the electrolytic bin shell are connected with negative electricity, so that the cathodic protection effect on the sea chest and the electrolytic bin is achieved, and the corrosion of seawater on the sea chest and the electrolytic bin is effectively prevented;
4. the aluminum electrode and the copper electrode are respectively used as anode electrodes, and are equivalent to a constructed impressed current cathodic protection system relative to a shell with negative potential, so that the corrosion resistance of a sea chest and an electrolytic bin is further improved.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of the overall structure of the apparatus of the present invention;
FIG. 2 is a schematic view of the structure of the portion A in FIG. 1;
FIG. 3 is a side view of a first anode electrode;
FIG. 4 is a schematic diagram of a first conductive contact;
FIG. 5 is a schematic structural view of a second anode electrode;
FIG. 6 is a radial cross-sectional view of a second anode electrode;
FIG. 7 is a radial side view of a second anode electrode;
fig. 8 is a schematic structural diagram of a part B in fig. 1.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description text.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
First embodiment
As shown in fig. 1 to 8, the present invention provides an anticorrosive marine growth prevention apparatus for a ship, comprising: the subsea door 10 and its internal components, the electrolysis chamber 50 and its internal components, the motor 90 and the galvanostat. The constant current instrument can be a common model in the field of seawater corrosion prevention, and has no special requirement.
Wherein, the entry setting of undersea door 10 is at the axial first end of undersea door 10, and the export setting is at the axial second end of undersea door 10, and undersea door 10 sets to have certain axial length for the sea water flows through sufficient distance in undersea door 10, guarantees the sea water and fully contacts with first positive electrode in undersea door 10, improves the treatment effeciency to the sea water.
Be provided with a rotation axis 40 in the undersea door 10 on the center pin, rotation axis 40 is conductive metal, a filter plate 11 is installed to the entrance of undersea door 10, carries out prefilter to the sea water, the first end rotation of rotation axis 40 is installed filter plate 11 center, just rotation axis 40 with filter plate 11 insulation is connected. Specifically, a first bearing 111 is arranged in the center of the inner side wall of the filter plate 11, the first bearing 111 and the filter plate 11 are arranged in an insulating manner, and the first end of the rotating shaft 40 is rotatably connected to the center of the filter plate 11 through the first bearing 111.
In this embodiment, the rotating shaft 40 is simultaneously used as an auxiliary anode in a cathodic protection system to perform cathodic protection on the outer shell of the subsea door 10, so that the rotating shaft 40 is composed of a titanium substrate and a ceramic metal oxide coating covering the outer surface of the titanium substrate, and the ceramic metal oxide coating may be formed by mixing one or more of ruthenium oxide, iridium oxide, palladium oxide, platinum metal oxide and one or more of titanium oxide, tin oxide, and tantalum oxide non-noble metal oxide.
The first anode electrode 30 is composed of a plurality of electrode bars 35, and the specific structure of the first anode electrode 30 includes:
the conductive connection seat comprises a plurality of conductive ring bodies 34 which are concentrically arranged and a supporting piece 32 which is conductively connected between every two adjacent conductive ring bodies 34, so that the conductive ring bodies 34 are mutually conductively connected, and each conductive ring body 34 is coaxially arranged with the rotating shaft 40; a plurality of conductive connecting buckles 31 are arranged on the conductive ring body 34 at equal intervals, the conductive connecting buckles 31 can be conductive hoops or conductive buckles, buckles and the like, a conductive contact ring 341 is concentrically arranged on the periphery of the conductive ring body 34 on the outermost side at intervals, and the conductive contact ring 341 is in conductive connection with the conductive connecting seat to play a role in connection between the conductive connecting seat and a power supply;
the insulating connection buckle 33 is concentrically arranged at the center of the conductive connection seat, specifically, the insulating connection buckle 33 is connected with the innermost conductive ring body 34, the insulating connection buckle 33 is fixed on the periphery of the rotating shaft 40, so that the conductive connection seat is in insulating connection with the rotating shaft 40, in this embodiment, two ends of the rotating shaft 40 are respectively provided with one conductive connection seat, or a conductive connection seat can be also arranged at the center of the rotating shaft 40, and the conductive connection buckles 31 on each conductive connection seat correspond to one another;
the two ends of the electrode bar 35 are respectively connected to the conductive connecting seats at the two ends of the rotating shaft 40 through the conductive connecting buckles 31, so that the electrode bar 35 and the conductive connecting seats form an integrated conductive structure, that is, the conductive ring bodies 34 at the two sides are arranged at intervals to form a plurality of electrode bars 35, the conductive ring bodies 34 at the two sides and the electrode bars 35 connected therebetween form a circular array, the periphery of the rotating shaft 40 is coaxially provided with a plurality of circular arrays, and the number of the circular arrays can be specifically adjusted according to the internal size of the sea chest 10.
In this embodiment, 4 circular arrays are concentrically arranged, the conductive intervals among the circular arrays are arranged, the electrode rods 35 on each circular array are arranged at intervals, and the centers of the circular arrays are arranged on the periphery of the rotating shaft 40 in an insulating manner through the insulating connecting buckles 33, so that a three-dimensional anode structure with a circulation gap is formed. The first anode electrode 30 is axially arranged inside the sea chest 10, the inlet of the sea chest 10 is arranged at the first end of the first anode electrode 30, and the outlet of the sea chest 10 is arranged at the second end of the first anode electrode 30, therefore, in the process of flowing through the sea chest 10, seawater must flow through the axial second end from the axial first end of the first anode electrode 30, the effective contact distance between the seawater and the first anode electrode 30 is increased, and the electrolysis efficiency of the first anode electrode 30 to the seawater is improved.
In this embodiment, the electrode rod 35 and the supporting member 32 are made of aluminum, so that the first anode electrode 30 forms an aluminum electrode with a three-dimensional structure, the length of the electrode rod 35 is less than the length of the rotating shaft 40, the first anode electrode 30 and the inner wall of the sea chest 10 are arranged at an interval, a first conductive contact 12 penetrates through the side wall of the sea chest 10 corresponding to the conductive connection seat at the second end of the rotating shaft, and the conductive contact ring 341 is connected with the first positive output end of the constant current instrument through the first conductive contact 12, so that the potential on the first anode electrode 30 is between 0.5V and 8V.
The electrolytic reaction is carried out on the seawater by applying positive voltage to the aluminum electrode, and aluminum ion floccules are produced in the seawater and attached to the surfaces of containers, equipment and pipelines so as to play a role in anticorrosion protection. The seawater is fully contacted with the aluminum electrode with the three-dimensional structure in the sea chest 10, the electrolytic treatment efficiency of the aluminum electrode to the seawater is improved, and the anticorrosion protection capability to the equipment is effectively improved.
In this embodiment, the first conductive contact 12 includes a conductive rod 121 and a conductive shoe 122, the conductive rod 121 vertically penetrates through the sidewall of the subsea door 10, the conductive rod 121 is connected to the sidewall of the subsea door 10 in an insulating manner, a first positive output terminal of the galvanostat is connected to an outer end of the conductive rod 121, the conductive shoe 122 is disposed on an inner end of the conductive rod 121, that is, in the subsea door, the conductive shoe 122 is provided with a guide groove 126 slidably engaged with the conductive contact ring 341, a conductive contact portion 125 is disposed in the guide groove 126, the conductive contact portion 125 is electrically connected to a bottom of the guide groove 126 through an elastic member 127, during the rotation of the first positive electrode 30, the first positive electrode 30 is connected to the first positive output terminal of the galvanostat through the conductive contact ring 341 and the first conductive contact 12, the conductive contact ring 341 is connected to the conductive rod 121 through the conductive contact portion and the elastic member 127, the elastic member 127 absorbs vibration or radial displacement during rotation of the first anode electrode 30, so that the first anode electrode 30 is in sliding conductive contact with the first conductive contact 12, improving stability of rotational operation of the first anode electrode 30.
In this embodiment, the electrolytic bin 50 is a conductive cylindrical cavity structure, an inlet at a first end of the electrolytic bin 50 is communicated with an outlet of the sea chest 10, and the outlet of the sea chest 10 is the same as the inlet of the electrolytic bin 50 in size. Specifically, the subsea door 10 is communicated with the electrolytic bin 50 through a pipeline 20, the subsea door 10, the pipeline 20 and the electrolytic bin 50 are connected to form an equipotential body, the pipeline 20 is connected with the negative output end of the galvanostat to jointly form a cathode body, the output current of the negative output end of the galvanostat is 15A-40A, and the potential on the cathode body is-0.5V-1.2V.
The second anode electrode 60 is rotatably arranged in the electrolytic bin 50, the second anode electrode 60 comprises a conductive shell 69, the conductive shell 69 is a cylindrical cavity structure, the central axis of the conductive shell 69 is respectively overlapped with the central axes of the electrolytic bin 50 and the subsea door 10, that is, the conductive shell 69 is arranged at the axial center of the electrolytic bin 50, a plurality of electrode plates 62 are led out from the radial inner side wall of the conductive shell 69 to the cavity in the cavity of the conductive shell 69, and the electrode plates 62 are sequentially arranged in the conductive shell 69 at intervals to form a bent unidirectional channel; the seawater flows out of the conductive shell 69 after flowing through the bent one-way channel, and the bent one-way channel increases the flowing path of the seawater, so that the seawater is fully contacted with the conductive shell 69 and the electrode plate 62, and the electrolysis efficiency is improved.
Specifically, a plurality of electrode plates 62 are respectively led out from two opposite sides of the inner side wall of the conductive shell 69, the electrode plates 62 are arranged in parallel at intervals, the electrode plates 62 on the two sides are staggered with each other, and the electrode plates 62 are spaced from the inner side wall of the conductive shell 69 on the opposite side at a certain distance, so as to provide a circulation caliber with a certain size for seawater; the electrode plate 62 is inclined at an angle of 45 ° towards the first end of the electrolytic cell 50.
The periphery of the conductive shell 69 is provided with a helical blade 63 along the axial direction, the helical blade is screwed to the second axial end of the electrolytic bin, the helical blade 63 is in conductive connection with the conductive shell 69, so that the helical blade 63, the conductive shell 69 and the electrode plate 62 form an anode body with a specific three-dimensional structure, the electrolytic bin 50 is also set to have a certain axial length, and the second anode electrode 60 is axially installed in the electrolytic bin 50, so that the effective contact distance between seawater and the second anode electrode 60 is increased, and the electrolytic efficiency of the second anode electrode 60 on seawater is improved.
In this embodiment, the space between the outside of the conductive housing 69 and the electrolytic bin 50 is communicated with the outlet of the sea chest 10, seawater electrolyzed by the first anode electrode 30 enters the space between the outside of the conductive housing 69 and the electrolytic bin 50 through the pipeline 20, a first through hole 611 is formed in the radial side wall of the second end of the conductive housing 69 in a penetrating manner, a second through hole 612 is formed in the center of the side wall of the first end of the conductive housing 69, a circular connector 64 extends outwards from the second through hole 612, the outer diameter of the circular connector 64 is smaller than the inner diameter of the pipeline 20, a first hollow-out insulating connecting seat 65 is arranged in the circular connector 64, specifically, the outer periphery of the first insulating connecting seat 65 is connected to the inner periphery of the circular connector 64 through a plurality of insulating members 68, and the insulating members 68 are arranged at intervals, so that the inside and outside of the circular connector 64 is.
The periphery of the circular interface 64 is sleeved with an output pipeline 70, a first end of the output pipeline 70 is connected with the circular interface 64 in a rotating and sealing manner, specifically, the outer diameter of the output pipeline 70 is smaller than the inner diameter of the pipeline 20, at least one rotating seal ring 642 is arranged between the inner side wall of the first end of the output pipeline 70 and the outer side wall of the circular interface 64, so that the first end of the output pipeline 70 is connected with the circular interface 64 in a rotating and sealing manner, and as shown in fig. 5, annular grooves 641 for installing the rotating seal rings 642 are arranged at the periphery of the circular interface 64 at intervals.
The outlet pipe 70 is fixed to the pipe 20 and leads out of the pipe 20. After the output pipeline 70 is connected with the circular interface 64 in a sealing manner, the first end of the output pipeline 70 is communicated with the inside of the conductive shell 69 through the hollow on the first insulation connecting seat 65, the second end of the output pipeline 70 is led out from the pipeline 20 between the sea chest 10 and the electrolytic bin 50, and a water delivery pump 80 is arranged at the second end of the output pipeline 70 and used for pumping out the treated seawater and delivering the seawater into the water treatment equipment.
The second through hole 612 is located in the center of the insulating ring pad 52, the insulating ring pad 52 radially penetrates through a plurality of fourth through holes 521, and the fourth through holes 521 communicate the pipeline 20 with the space outside the conductive shell 69, so that seawater electrolyzed by the first anode 30 enters the space between the outside of the conductive shell 69 and the electrolytic bin 50 through the pipeline 20 and the fourth through holes 521.
The second end of the rotating shaft 40 is connected to the first insulating connecting seat 65 through the output pipe 70. Specifically, the second end of the rotating shaft 40 penetrates through the pipeline 20 and is connected with the first insulating connection seat 65 on the second anode electrode 60, a second conductive contact 43 penetrates through the side wall of the pipeline 20, a ring protrusion 13 is convexly arranged on the rotating shaft 40 in the pipeline 20, and the ring protrusion 13 is in conductive sliding contact with the second conductive contact 43, so that the rotating shaft 40 is conductively connected with the second conductive contact 43. The second conductive contact 43 conforms to the structure of the first conductive contact 12.
Meanwhile, a metal plate 42 is arranged between the outlet of the sea chest 10 and the first anode electrode 30, the center of the metal plate 42 is connected to the rotating shaft 40, so that the metal plate 42 and the rotating shaft 40 form an integrated conductive structure, the material of the metal plate 42 is the same as that of the rotating shaft 40, the diameter of the metal plate 42 is not smaller than that of the conductive connecting seat, a plurality of third through holes are formed in the metal plate 42 in a penetrating mode and used for providing a circulation channel for sea water, meanwhile, the circulation path of the sea water in the sea chest is optimized, the flow rate of the sea water is balanced, particularly, the flow rate of the sea water near the inner wall of the sea chest is increased, and the sea water is prevented from being deposited near the inner wall of the sea chest to enrich sea creatures and cause adhesion and corrosion to the sea chest. The rotating shaft 40 is connected to the third positive output terminal through the second conductive contact 43, so that the potential on the rotating shaft 40 is between 0.8V and 2V. The submarine gate 10 is a cathode, so that a cathodic protection system for impressed current is formed, electric field distribution is optimized, the cathodic protection effect on the submarine gate 10 is achieved, and the corrosion of seawater on the submarine gate 10 is effectively prevented.
In this embodiment, the first end of the conductive housing 69 is connected to the inner side wall of the first end of the electrolytic bin 50 through the insulating ring pad 52, so that the first end of the conductive housing 69 is connected to the electrolytic bin 50 in an insulating manner, the insulating ring pad 52 is disposed on the inner side wall of the first end of the electrolytic bin 50 at the periphery of the inlet of the electrolytic bin 50, the second end of the insulating ring pad 52 is provided with a first annular guide rail, correspondingly, the outer side wall of the first end of the conductive housing 69 is provided with a second annular guide rail 67, a first rolling member 54 is disposed between the first annular guide rail and the second annular guide rail 67, and the first rolling member 54 is a ball, so that the first end of the conductive housing 69 is rotatably disposed on the inner side wall of the first end of the electrolytic bin 50 in the axial direction through the first.
The first insulating spacer 51 is arranged on the inner side wall of the second end of the electrolytic bin 50, so that the second end of the electrolytic bin 50 is arranged in an insulating manner with the second anode electrode 60, an annular conductive sliding rail 55 is arranged between the second end of the conductive shell 69 and the first insulating spacer 51, correspondingly, a third annular guide rail 66 is arranged on the outer side wall of the second end of the conductive shell 69, a second rolling part 53 is arranged between the annular conductive sliding rail 55 and the third annular guide rail 66, and the second rolling part 53 is a ball, so that the second end side wall of the conductive shell 69 is rotatably arranged on the inner side wall of the axial second end of the electrolytic bin 50 through the second rolling part 53, and the conductive shell 69 is in conductive contact with the annular conductive sliding rail 55.
Meanwhile, a conductor 56 penetrates through the side wall of the second end of the electrolytic bin 50, the first end of the conductor 56 is in conductive contact with the annular conductive slide rail 55, the second end of the conductor 56 is led out of the electrolytic bin 50 and is connected with the second positive electrode output end of the constant current instrument, and the conductor 56 is in sealing contact with the outer side wall of the second end of the electrolytic bin 50 through an insulating part 57.
The second anode electrode 60 is made of copper, that is, the second anode electrode 60 constitutes a copper electrode with a three-dimensional structure, and the second anode output end of the whole second anode electrode 60 galvanostat is connected, so that the potential on the second anode electrode 60 is between 0.5V and 8V. By applying positive voltage to the copper electrode, the electrolytic reaction is carried out on the seawater, and copper ions are produced in the seawater, so that strains such as marine organisms are effectively killed, the marine organisms are prevented from being attached to the surfaces of containers, equipment and pipelines, and the effect of preventing the marine organisms from generating is achieved.
The seawater electrolyzed by the first anode 30 enters the space between the outer side of the conductive shell 69 and the electrolytic bin 50 through the pipeline 20 and the fourth through hole 521, the seawater flows from the first end to the second end of the electrolytic bin in the space, in the process, the seawater spirally advances under the action of the spiral blade 63 on the periphery of the conductive shell 69, so that the seawater is fully contacted with the spiral blade 63, the outer surface of the conductive shell 69 and the spiral blade 63 are used as a part of a copper electrode, the seawater is pre-electrolyzed to generate cuprous ions, then the cuprous ions enter the second end in the conductive shell 69 from the first through hole 611, the seawater flows to the first end in the conductive shell 69 from the second end in the conductive shell 69, in the process, the seawater passes through the bent one-way channel formed by the electrode plate 62 in the conductive shell 69, and flows out from the conductive shell 69 after passing through the bent one-way channel, the bent one-way channel increases the flowing path of seawater, when the pre-electrolyzed seawater is fully contacted with the inner side wall of the conductive shell 69 and the electrode plate 62, the electrolysis efficiency is further improved, the generated cuprous ions fully kill the biological bacteria in the seawater, and the capability of preventing the seawater from generating marine organisms is improved.
After the seawater is pre-electrolyzed and re-electrolyzed, the electrolytic sterilization efficiency of the copper electrode on the seawater is effectively improved.
In this embodiment, the motor 90 is disposed on the outer sidewall of the second end of the electrolytic cell 50 through a second insulating spacer 91, a second insulating connecting seat 93 is disposed in the center of the outer sidewall of the second end of the conductive housing 69, and a rotating shaft 92 of the motor 90 sequentially penetrates through the second insulating spacer 91, the second end sidewall of the electrolytic cell 50, the first insulating spacer 51 and the second insulating connecting seat 93 to be fixed, so that the motor is drivingly connected to the second anode, and the rotating shaft is connected to the outer sidewall of the second end of the electrolytic cell 50 through an insulating slip ring 94.
When the sea water is taken by the ship, the motor drives the second anode electrode to rotate, and meanwhile, the second anode electrode is synchronously connected with the first anode electrode through the rotating shaft, so that the aluminum electrode, the copper electrode and the rotating shaft are synchronously rotated, the sea water is fully contacted with the aluminum electrode and the copper electrode, more cuprous ions and aluminum ions are generated, the corrosion prevention and marine organism prevention treatment efficiency of the sea water is improved, and the quick water taking is realized. In the prior art, the seawater needs to be placed in a submarine door in advance for a long time to be taken, which wastes time and labor.
Meanwhile, the automatic decontamination capability of the surfaces of the aluminum electrode and the copper electrode is improved along with the synchronous and rapid rotation of the aluminum electrode and the copper electrode, and because impurities such as marine organisms are not easy to be enriched on the aluminum electrode and the copper electrode which move rapidly, the marine organisms which are unstable in adhesion can be separated under the high-speed rotation, the self-cleaning function is realized, the surfaces of the aluminum electrode and the copper electrode are prevented from being covered under the static state to reduce the electrolytic activity, and the treatment efficiency of seawater is further improved.
Further, in the present invention, the electric field distribution is optimized, specifically, the rotating shaft 40 with positive electricity is simultaneously disposed in the sea chest 10, and the shells of the sea chest 10 and the electrolytic bin 50 are negatively charged, so as to achieve the effect of cathodic protection on the sea chest 10 and the electrolytic bin 50, and effectively prevent the sea water from corroding the sea chest 10 and the electrolytic bin 50. In addition, the aluminum electrode and the copper electrode are respectively used as positive electrodes, and are also equivalent to a constructed impressed current cathodic protection system relative to a shell with negative potential, so that the corrosion resistance of the sea chest 10 and the electrolytic bin 50 is further improved.
Second embodiment
On the basis of the first embodiment, an air impeller 41 is arranged at an inlet of the sea chest 10, the air impeller 41 is located between the filter plate 11 and the first positive electrode 30, the diameter of the air impeller 41 is not smaller than that of the conductive connection seat, a second bearing 411 is arranged at a first end of the rotating shaft 40 in an insulating manner, the center of the air impeller 41 is rotatably arranged on the rotating shaft 40 through the second bearing 411, the air impeller 41 is driven to rotate along with the inflow of the sea water into the sea chest in the water taking process, the area distribution of the air impeller 41 is basically the same as the whole radial cross section of the sea chest, the incoming sea water is driven by the rotation of the air impeller 41 to be uniformly brought into the sea chest, the flow equalizing effect on the sea water is achieved, the flow path of the sea water in the sea chest is optimized, the flow rate of the sea water is equalized, and particularly the flow rate of the sea water near the inner wall of the sea chest is increased, the marine organism is prevented from being enriched due to the deposition of seawater near the inner wall of the sea chest, and the adhesion and corrosion to the sea chest are avoided.
From the above, the invention is provided with the aluminum electrode and the copper electrode which rotate synchronously, so that the seawater is fully contacted with the aluminum electrode and the copper electrode to generate more cuprous ions and aluminum ions, the corrosion-resistant and marine organism-resistant treatment efficiency of the seawater is improved, and the rapid water taking is realized; meanwhile, the aluminum electrode and the copper electrode synchronously and rapidly rotate, so that the automatic decontamination capability of the surfaces of the aluminum electrode and the copper electrode is improved, the surfaces of the aluminum electrode and the copper electrode are prevented from being covered under a static state to reduce the electrolytic activity, and the treatment efficiency of the seawater is further improved; furthermore, the electric field distribution is optimized, the rotating shaft with positive electricity is arranged in the sea chest, and the sea chest and the electrolytic bin shell are connected with negative electricity, so that the cathode protection effect on the sea chest and the electrolytic bin is achieved, and the corrosion of seawater on the sea chest and the electrolytic bin is effectively prevented; and the aluminum electrode and the copper electrode are respectively used as anode electrodes, and are equivalent to a constructed impressed current cathodic protection system relative to a shell with negative potential, so that the corrosion resistance of the sea chest and the electrolytic bin is further improved.
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in various fields of endeavor to which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (10)
1. An anti-corrosive marine growth prevention device for a marine vessel, comprising:
the sea chest door is characterized in that a rotating shaft is arranged on an inner central shaft of the sea chest door, the rotating shaft is made of conductive metal, a filter plate is installed at the inlet of the sea chest door, the first end of the rotating shaft is rotatably installed in the center of the filter plate, and the rotating shaft is in insulation connection with the filter plate;
the first positive electrode consists of a plurality of electrode rods which are arranged at intervals to form a circular array, the periphery of the rotating shaft is coaxially provided with a plurality of circular arrays, the circular arrays are connected in a conductive interval mode, and the circular array at the innermost side is connected to the rotating shaft in an insulating mode;
the electrolytic bin is of a conductive cylindrical cavity structure, and a first end of the electrolytic bin is communicated with an outlet of the seabed door;
the second positive electrode is rotatably arranged in the electrolytic bin and comprises a conductive shell, the conductive shell is of a cylindrical cavity structure, a central shaft of the conductive shell is respectively superposed with central shafts of the electrolytic bin and the seabed door, a plurality of electrode plates are led out from the radial inner side wall of the conductive shell to the cavity in the cavity of the conductive shell, and the electrode plates are sequentially arranged in the conductive shell at intervals to form a bent unidirectional channel; the periphery of the conductive shell is axially provided with a helical blade, the helical blade is screwed into the second axial end of the electrolytic bin, and the helical blade is electrically connected with the conductive shell; and
the constant current instrument is provided with three positive electrode output ends, wherein a first positive electrode output end is connected with the first positive electrode, a second positive electrode output end is connected with the second positive electrode, a third positive electrode output end is connected with the rotating shaft, and a negative electrode output end of the constant current instrument is respectively connected with the submarine gate and the electrolytic bin shell;
the two axial ends of the second anode electrode are rotatably arranged on the inner side walls of the two axial ends of the electrolytic bin, a motor is arranged on the outer side of the second end of the electrolytic bin, and a rotating shaft of the motor penetrates through the side wall of the second end of the electrolytic bin and is connected with the center of the second end of the second anode electrode; the space between the outer side of the conductive shell and the electrolytic bin is communicated with the outlet of the seabed door, a first through hole is arranged on the radial side wall of the second end of the conductive shell in a penetrating way, a second through hole is arranged in the center of the side wall of the first end of the conductive shell, the second through hole extends outwards to form a circular interface, a first hollow-out insulating connecting seat is arranged in the circular interface, an output pipeline is sleeved on the periphery of the circular interface, the first end of the output pipeline is connected with the round interface in a rotating and sealing way, the first end of the output pipeline is communicated with the inside of the conductive shell through a hollow-out part on the first insulating connecting seat, the second end of the output pipeline is led out from the channel between the seabed door and the electrolytic bin, and a water delivery pump is arranged at the second end of the output pipeline, and the second end of the rotating shaft penetrates through the output pipeline and is connected to the first insulation connecting seat.
2. The corrosion-resistant and marine organism resistant device according to claim 1, wherein a first bearing is disposed at the center of the inner side wall of the filter plate, the first bearing is insulated from the filter plate, the first end of the rotating shaft is rotatably connected to the center of the filter plate through the first bearing, and the rotating shaft is composed of a titanium substrate and a ceramic metal oxide coating covering the outer surface of the titanium substrate.
3. An anticorrosive marine growth preventing device for a marine vessel according to claim 2, wherein the specific structure of the first anode electrode comprises:
the conductive connecting seat comprises a plurality of concentrically arranged conductive ring bodies and a supporting piece which is conductively connected between every two adjacent conductive ring bodies, a plurality of conductive connecting buckles are arranged on the conductive ring bodies at equal intervals, a conductive contact ring is arranged on the periphery of the conductive ring body on the outermost side at concentric intervals, and the conductive contact ring is conductively connected with the conductive connecting seat;
the insulating connecting buckles are concentrically arranged at the centers of the conductive connecting seats, the insulating connecting buckles are connected with the conductive ring bodies on the innermost side, the insulating connecting buckles are fixed on the periphery of the rotating shaft, at least two ends of the rotating shaft are respectively provided with one conductive connecting seat, and the conductive connecting buckles on the conductive connecting seats correspond to one another; and
the two ends of the electrode bar are respectively connected to the conductive connecting seats at the two ends of the rotating shaft through the conductive connecting buckles, and the conductive ring bodies at the two sides and the electrode bar connected between the conductive ring bodies form a circular array.
4. An anti-corrosive marine growth prevention device for a marine vessel according to claim 3, wherein the electrode rod and the supporting member are made of aluminum, the length of the electrode rod is less than that of the rotating shaft, the first anode electrode is spaced apart from the inner wall of the sea chest, a first conductive contact head is penetratingly disposed on the side wall of the sea chest corresponding to one of the conductive connection seats, and the conductive contact ring is connected to the first anode output end through the first conductive contact head;
the first conductive contact head comprises a conductive rod and a conductive shoe, the conductive rod vertically penetrates through the side wall of the sea chest, the conductive rod is connected with the side wall of the sea chest in an insulating mode, the first positive output end is connected with the outer side end of the conductive rod, the conductive shoe is arranged at the inner side end of the conductive rod, a guide groove in sliding fit with the conductive contact ring is formed in the conductive shoe, a conductive contact part is arranged in the guide groove, and the conductive contact part is in conductive connection with the bottom of the guide groove through an elastic piece.
5. An anticorrosion and marine organism prevention device for a ship according to claim 4, wherein a wind impeller is arranged at the inlet of the sea chest and is positioned between the filter plate and the first positive electrode, the diameter of the wind impeller is not smaller than that of the conductive connecting seat, a second bearing is arranged at the first end of the rotating shaft in an insulating manner, and the center of the wind impeller is rotatably arranged on the rotating shaft through the second bearing.
6. An anti-corrosion and anti-marine organism device for a ship according to claim 5, wherein a metal plate is arranged between the outlet of the sea chest and the first anode electrode, the center of the metal plate is connected to the rotating shaft, the material of the metal plate is the same as that of the rotating shaft, the diameter of the metal plate is not smaller than that of the conductive connecting seat, and a plurality of third through holes are formed in the metal plate in a penetrating manner.
7. An anticorrosion marine organism prevention device for a ship according to claim 6, wherein the sea chest is communicated with the electrolysis chamber through a pipeline, the sea chest, the pipeline and the electrolysis chamber shell are connected to form an equipotential body, and the pipeline is connected with a negative electrode output end of the constant current instrument;
the second end of the rotating shaft penetrates through the pipeline and is connected with a first insulation connecting seat on the second anode electrode, a second conductive contact head penetrates through the side wall of the pipeline and is located in the pipeline, a ring body protrusion is arranged on the rotating shaft in a protruding mode, the ring body protrusion is in conductive sliding contact with the second conductive contact head, the rotating shaft passes through the second conductive contact head and is connected with the third anode output end, and the second conductive contact head is consistent with the first conductive contact head in structure.
8. An anti-corrosion and anti-marine-creature device for a ship according to claim 7, wherein a plurality of electrode plates are respectively led out from two opposite sides of the inner side wall of the conductive shell, the electrode plates are arranged in parallel, the electrode plates on two sides are staggered with each other, and the electrode plates are spaced from the inner side wall of the conductive shell on the opposite side by a certain distance; the electrode plate inclines towards the first end of the electrolytic bin, and the inclination angle is 30-70 degrees.
9. An anticorrosion and anti-marine-creature device for a ship according to claim 8, wherein the second anode is made of copper, the first end of the conductive shell is connected with the inner side wall of the first end of the electrolytic bin through an insulating ring gasket, the insulating ring gasket is arranged on the periphery of the inlet of the electrolytic bin, a first annular guide rail is arranged on the side wall of the second end of the insulating ring gasket, a first rolling member is arranged on the side wall of the first end of the conductive shell, and the first rolling member is limited to move in the first annular guide rail;
the second through hole is positioned in the center of the insulating ring gasket, the insulating ring gasket radially penetrates through a plurality of fourth through holes, and the fourth through holes are communicated with the pipeline and the outer space of the conductive shell;
the outer diameter of the output pipeline is smaller than the inner diameter of the pipeline, at least one rotary sealing ring is arranged between the inner side wall of the first end of the output pipeline and the outer side wall of the circular connector, and the output pipeline is fixed on the pipeline and is led out from the pipeline.
10. An anticorrosion and anti-marine-creature device for a ship according to claim 9, wherein a first insulating spacer is disposed on an inner side wall of the second end of the electrolytic cell, an annular conductive sliding rail is disposed between the second end of the conductive housing and the first insulating spacer, a second rolling member is disposed on a side wall of the second end of the conductive housing, the second rolling member is movable in the annular conductive sliding rail, and the conductive housing is in conductive contact with the annular conductive sliding rail;
the motor is arranged on the outer side wall of the second end of the electrolytic bin through a second insulating spacer, a second insulating connecting seat is arranged in the center of the outer side wall of the second end of the conductive shell, a rotating shaft of the motor sequentially penetrates through the second insulating spacer, the side wall of the second end of the electrolytic bin, the first insulating spacer and the second insulating connecting seat to be fixed, and the rotating shaft is connected with the outer side wall of the second end of the electrolytic bin through an insulating sliding ring;
the side wall of the second end of the electrolytic bin is provided with a conductor in a penetrating mode, the first end of the conductor is in conductive contact with the annular conductive sliding rail, the second end of the conductor is led out of the electrolytic bin and is connected with the second anode output end of the constant current instrument, and the conductor is in sealing contact with the outer side wall of the second end of the electrolytic bin through an insulating piece.
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| CN110406644B (en) * | 2019-09-04 | 2024-04-02 | 镇江麒麟船舶设备有限公司 | Marine organism prevention device for ship |
| CN113212686B (en) * | 2021-05-07 | 2024-02-20 | 陆雨轩 | Hull surface cleaning equipment and working method thereof |
| CN114104193A (en) * | 2021-12-02 | 2022-03-01 | 渤海造船厂集团有限公司 | Ship bottom suction grille device and corrosion prevention method |
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