CN112547465B - Spraying method of anticorrosive paint for outer surface of marine pipeline of ship - Google Patents
Spraying method of anticorrosive paint for outer surface of marine pipeline of ship Download PDFInfo
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- CN112547465B CN112547465B CN202011167851.7A CN202011167851A CN112547465B CN 112547465 B CN112547465 B CN 112547465B CN 202011167851 A CN202011167851 A CN 202011167851A CN 112547465 B CN112547465 B CN 112547465B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B16/00—Spray booths
- B05B16/20—Arrangements for spraying in combination with other operations, e.g. drying; Arrangements enabling a combination of spraying operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B9/00—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour
- B05B9/03—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material
- B05B9/04—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump
- B05B9/0403—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material
- B05B9/0423—Spraying apparatus for discharge of liquids or other fluent material, without essentially mixing with gas or vapour characterised by means for supplying liquid or other fluent material with pressurised or compressible container; with pump with pumps for liquids or other fluent material for supplying liquid or other fluent material to several spraying apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2504/00—Epoxy polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2602/00—Organic fillers
Abstract
The invention provides a spraying method of anticorrosive paint on the outer surface of a marine pipeline, and spraying equipment is provided and comprises a paint liquefying device, a high-pressure pump, a plurality of parallel tracks, a traveling device, a circular hose support and a hose; the track is on a parallel with the axis of treating the spraying pipeline, the track is located hose support's outside, wherein the running gear on the more than one track passes through connecting rod connection hose support, install laser curing device on the orbital running gear of all the other, the export of high-pressure pump is connected to the one end of hose, the through-hole of the connecting block of fixed connection bottom the track is passed at the middle part, the through-hole that the other end passed hose support is around a week on hose support's interior anchor ring, be located and offer threaded hole on the pipe wall of the hose of hose support interior anchor ring, threaded hole in-connection has infundibulate spraying mouth, the pipe surface of the lower extreme of spraying mouth is threaded. The coating flowing phenomenon caused by uneven coating is avoided, and the aim of optimizing the spraying effect is fulfilled.
Description
Technical Field
The invention belongs to the field of coatings and coating equipment, and particularly relates to a spraying method of an anticorrosive coating for the outer surface of a marine pipeline.
Background
The coating with the functions of corrosion prevention, water prevention and protection is a material which is very needed in engineering construction. In particular, the protection of pipelines such as underground pipelines, bridges, tunnel engineering, ship seawater pipelines and the like requires a protective layer to be coated and is expected to be cured quickly.
The construction method of the existing coating comprises various modes such as brush coating, spray coating, roller coating, curtain coating and the like. The brushing and coating method is the brushing and coating method which is the most widely applied construction at present, the construction is simple, the operation is convenient, but the pure manual operation is needed during the construction, the labor intensity is high, the damage to the body of workers is large, the coating is wasted, brush marks are easy to leave during the coating process, and the flatness and the decorative effect of the construction surface are seriously influenced. The roll coating method is high in speed and automation operation, high in coating speed and production efficiency, does not generate paint mist or splash paint mist, only adapts to plane coating, is not applicable to coated objects with other shapes, is easy to generate roll marks on a coating film, and easily generates change in viscosity of the coating in the roll coating process to influence the coating effect. The spraying method is convenient to operate, the automation degree is high, the labor intensity of constructors is reduced, the spraying surface is even and flat, and a spraying machine or a spraying machine on the market at present mainly ensures that the coating has certain kinetic energy in a mode of extruding liquid coating at high speed or extruding air to drive the liquid coating and collides with the spraying surface to achieve the spraying effect, so that severe coating splashing is caused, the coating is wasted, surrounding objects are easy to spray, and coating particles floating everywhere can harm human health. The spraying equipment in the prior art is usually suitable for large walls and is difficult to be suitable for spraying special-shaped construction surfaces such as pipelines.
The coating plays a crucial role in marine corrosion protection. However, the coating often has micro-cracks hidden inside due to the influence of seawater corrosion. Once defects are generated in the coating, the surface of the coating is discontinuous, so that the damage of the coating is aggravated, and the service life of the coating is greatly shortened.
Therefore, it is needed to provide a ship pipeline coating with uniform spraying and low pollution, and a construction method thereof, which are suitable for special-shaped construction surfaces of pipelines.
Disclosure of Invention
The invention provides a spraying method of an anticorrosive paint on the outer surface of a marine pipeline, which avoids the phenomenon of paint flow caused by uneven coating, thereby achieving the purpose of optimizing the spraying effect.
The purpose of the invention is realized by the following technical scheme:
a spraying method of anticorrosive paint on the outer surface of a marine pipeline of a ship comprises the steps of firstly melting anticorrosive paint powder into liquid, and then spraying the liquid onto the inner surface of the marine pipeline through spraying equipment;
the anticorrosive coating powder is obtained by mixing an epoxy resin coating and a self-repairing microcapsule; the weight ratio of the epoxy resin coating to the self-repairing microcapsule is 100: 3; the self-repairing microcapsule comprises a core material and a wall material wrapping the core material, wherein the core material is tung oil, the wall material is calcium alginate which is a reaction product of a sodium alginate solution and a calcium chloride solution, the sodium alginate solution, the tung oil and an emulsifier are mixed, the mixture is placed in a tissue triturator and stirred for 5min at a rotating speed of 6000r/min to form oil-in-water emulsion drops, and the emulsion is obtained after standing and defoaming; dripping the emulsion into a calcium chloride solution under the pressure of 0.43MPa, filtering out the microcapsule by a 400-mesh paper funnel, washing away unreacted calcium chloride on the surface by deionized water, pre-freezing the microcapsule in a refrigerator for 5 hours, and freeze-drying the microcapsule for 12 hours by a freeze dryer to obtain self-repairing microcapsule powder; the concentration of the sodium alginate solution is 0.5%, the concentration of the calcium chloride solution is 5%, the weight ratio of the sodium alginate to the tung oil is 1:1, and the weight ratio of the sodium alginate to the emulsifier is 5: 1;
the spraying equipment comprises a coating liquefying device 11, a high-pressure pump 10 communicated with the coating liquefying device 11 through a pipeline, a plurality of parallel rails 6 fixed through a supporting structure 15, a walking device arranged on the rails 6, a circular hose support 3 and a hose 13; track 6 be on a parallel with the axis of treating spraying pipeline 1, track 6 be located hose support 3's outside, the running gear on one of them track 6 passes through connecting rod 16 and connects hose support 3, installs laser curing device 8 on remaining track 6's the running gear, the export at high-pressure pump 10 of one end connection of hose 13, the through-hole of fixed connection at the connecting block 9 of track 6 bottom is passed at the middle part, the through-hole 17 that the other end passed hose support 3 is around a week on hose support 3's the interior anchor ring, set up threaded hole on the pipe wall of the hose 13 that is located hose support 3 interior anchor ring, threaded hole in-connection have infundibulate spraying mouth 12, the surface of the pipe lower extreme of spraying mouth 12 have the screw thread.
As a more preferable technical scheme of the invention, the traveling device comprises a base 18, a driving bevel gear 19, a driven bevel gear 21 and an output wheel 20, wherein a traveling speed reducer 4 is installed on the driving bevel gear 19, the traveling speed reducer 4 is connected with a traveling servo motor 5, the driving bevel gear 19 is in key connection with an output shaft of the traveling speed reducer 4 and is meshed with the driven bevel gear 21, a transmission shaft is fixed on the base 18, the driven bevel gear 19 and the output wheel 20 are installed on the transmission shaft, teeth of the output wheel 20 are meshed with tooth grooves 7 on a track 6, a guide wheel is fixedly connected on the base, and the guide wheel is placed in grooves on two sides of the track 6.
As a more excellent technical scheme of the invention: the emulsifier is one of OP-10, Arabic gum powder, sodium dodecyl benzene sulfonate and TWEEN80, or the mixture of two of the OP-10, the Arabic gum powder, the sodium dodecyl benzene sulfonate and the TWEEN 80.
As a more excellent technical scheme of the invention: the epoxy resin coating is E-12(604) epoxy resin.
As a more excellent technical scheme of the invention: the liquefaction temperature of the anti-corrosion coating powder is 180-190 ℃.
As a more excellent technical scheme of the invention: the coating liquefaction device 11 comprises a heating base and a sealed material tank positioned on the heating base, and the material tank is communicated with an inlet of the high-pressure pump 10.
As a more excellent technical scheme of the invention: the inner circumferential surface of the hose support 3 is evenly provided with clamping ports 2, and the hose is clamped in the clamping ports 2.
As a more excellent technical scheme of the invention: the base 18 is detachably connected with one end of the connecting rod 16, and the other end of the connecting rod 16 is detachably connected with the hose bracket 3.
As a more preferable technical scheme of the invention, the high-pressure pump 10, the motor 5 and the laser curing device 8 are in control connection with a control system.
As a more preferable technical scheme of the invention, the two tracks 6 which are connected with the hose bracket 3 through the walking device by the connecting rods 16 are uniformly distributed at the left side and the right side of the hose bracket 3.
As a more preferable technical scheme of the invention, the two tracks 6 provided with the laser curing devices 8 are uniformly distributed on the upper side and the lower side of the hose bracket 3.
As a more preferable technical scheme of the invention, one end of the hose 13 in the hose bracket 3 is connected to the inner ring surface of the hose bracket 3 through a fixed lock buckle.
The beneficial effects are as follows:
the anticorrosive paint provided by the invention solves the wall flowing phenomenon in the prior art through brushing or other spraying modes through special spraying equipment, and has better uniformity and dispersibility.
Drawings
FIG. 1 is a schematic view of the construction of the spray coating device of the present invention;
FIG. 2 is a schematic view of the construction of the spray apparatus of the present invention (another angle);
FIG. 3 is a schematic view of the construction of the spray apparatus of the present invention (another angle);
FIG. 4 is a schematic structural view of the walking device of the present invention;
FIG. 5 is a schematic view of the construction of the spray nozzle of the present invention;
FIG. 6 shows the results of the salt spray test for corrosion resistance of the experimental group coating of example 1 of the present invention.
Detailed Description
As shown in fig. 1-3, the present invention provides a spraying apparatus for ship seawater pipeline anticorrosive paint, comprising a paint liquefying device 11, a high pressure pump 10 communicated with the pipeline of the paint liquefying device 11, a plurality of parallel tracks 6 fixed by a supporting structure 15, a traveling device installed on the tracks 6, a circular hose support 3 and a hose 13; track 6 be on a parallel with the axis of treating spraying pipeline 1, track 6 be located hose support 3's outside, the running gear on one of them track 6 passes through connecting rod 16 and connects hose support 3, installs laser curing device 8 on remaining track 6's the running gear, the export at high-pressure pump 10 of one end connection of hose 13, the through-hole of fixed connection at the connecting block 9 of track 6 bottom is passed at the middle part, the through-hole 17 that the other end passed hose support 3 is around a week on hose support 3's the interior anchor ring, set up threaded hole on the pipe wall of the hose 13 that is located hose support 3 interior anchor ring, threaded hole in-connection have infundibulate spraying mouth 12, the surface of the pipe lower extreme of spraying mouth 12 have the screw thread.
In some embodiments, the traveling device includes a base 18, a driving bevel gear 19, a driven bevel gear 21 and an output wheel 20, the driving bevel gear 19 is provided with a traveling speed reducer 4, the traveling speed reducer 4 is connected with a traveling servo motor 5, the driving bevel gear 19 is in key connection with an output shaft of the traveling speed reducer 4 and is meshed with the driven bevel gear 21, a transmission shaft is fixed on the base 18, the driven bevel gear 19 and the output wheel 20 are installed on the transmission shaft, teeth of the output wheel 20 are meshed with tooth grooves on the track 6, the base is fixedly connected with a guide wheel, and the guide wheel is placed in grooves on two sides of the track 6.
In some embodiments, the emulsifier is one of OP-10, gum arabic powder, sodium dodecylbenzenesulfonate, TWEEN80, or a mixture of two thereof.
In some embodiments, the epoxy coating is an E-12(604) epoxy.
In some embodiments, the liquefaction temperature of the anti-corrosion coating powder is 180-190 ℃.
In some embodiments, the coating liquefaction device 11 includes a heating base and a sealed material tank on the heating base, the material tank being in communication with the inlet of the high pressure pump 10.
In some embodiments, the hose support 3 has clamping ports 2 uniformly distributed on its inner circumferential surface, and the hose is clamped in the clamping ports 2.
In some embodiments, the base 18 is detachably connected to one end of the connecting rod 16, and the other end of the connecting rod 16 is detachably connected to the hose support 3. The hose support 3 can be replaced according to different diameters of the pipeline 1.
In some embodiments, the high-pressure pump 10, the motor 5 and the laser curing device 8 are in control connection with a control system.
In some embodiments, the two tracks 6 connected to the hose bracket 3 through the running gear via the connecting rod 16 are uniformly distributed on the left and right sides of the hose bracket 3.
In some embodiments, the two rails 6 provided with the laser curing device 8 are uniformly distributed on the upper and lower sides of the hose bracket 3.
In some embodiments, the end of the hose 13 inside the hose support 3 is connected to the inner annular surface of the hose support 3 by a fixed lock.
In some embodiments, the high-pressure pump 10, the motor 5 and the laser curing device 8 are in control connection with a control system. The laser curing device is a laser.
Example 1
Firstly, melting anticorrosive paint powder into liquid, and spraying the liquid onto the inner surface of a seawater pipeline through spraying equipment; the anticorrosive coating powder is obtained by mixing an epoxy resin coating and a self-repairing microcapsule; the weight ratio of the epoxy resin coating to the self-repairing microcapsule is 100: 3; the self-repairing microcapsule comprises a core material and a wall material wrapping the core material, wherein the core material is tung oil, the wall material is calcium alginate which is a reaction product of a sodium alginate solution and a calcium chloride solution, the sodium alginate solution, the tung oil and OP-10 are mixed, the mixture is placed in a tissue triturator and stirred for 5min at the rotating speed of 6000r/min to form oil-in-water emulsion drops, and the emulsion is obtained after standing and defoaming; dripping the emulsion into a calcium chloride solution under the pressure of 0.43MPa, filtering out the microcapsule by a 400-mesh paper funnel, washing away unreacted calcium chloride on the surface by deionized water, pre-freezing the microcapsule in a refrigerator for 5 hours, and freeze-drying the microcapsule for 12 hours by a freeze dryer to obtain self-repairing microcapsule powder; the concentration of the sodium alginate solution is 0.5%, the concentration of the calcium chloride solution is 5%, the weight ratio of the sodium alginate to the tung oil is 1:1, and the weight ratio of the sodium alginate to the OP-10 is 5: 1.
firstly, one end of a hose 13 is connected with a high-pressure pump 10, the other end of the hose passes through a hole in a hose support 3, the hose is wound on the inner surface of the hose support 3 and then is installed in a clamping port 2 for fixation, the end with threads of a spraying nozzle 12 is installed in the threaded hole of the hose 13, the number of the installed spraying nozzles 12 is selected according to the spraying requirement, and the threaded holes in the rest hoses 13 are sealed by bolts. The length of the hose 13 is equal to or greater than the length of the sprayed pipe 1.
The anticorrosive coating obtained in the embodiment 1 is filled into a material tank of a coating liquefaction device 11, after the anticorrosive coating is heated to be liquefied at 180 ℃, a high-pressure pump 10 is opened, liquid enters the high-pressure pump 10 and then enters a hose 13, a hose support 3 moves forwards under the driving of a walking device, a laser curing device 8 also moves forwards under the driving of the walking device to cure the sprayed coating, a spraying nozzle 12 on the hose 13 on the inner surface of the hose support 3 sprays the coating on the outer pipe wall, and a laser curing device behind the spraying nozzle solidifies the coating on the inner pipe wall. The motor 5 is a stepping motor.
The pipes obtained by spraying according to the above examples showed no flow wall phenomenon, and had a coating thickness of 60 to 80 μm, and the inner wall of the pipe 1 sprayed according to the above example 1 was used as an experimental group, and the coating layer provided with an epoxy resin was used as a blank control group.
The coatings of the experimental groups were subjected to an X scratch test:
the coating was scratched through with a scalpel once. The X-scratches crossed the diagonal but did not penetrate, were about 2cm in length, 4 μm in scribe width, 60 degrees included angle, and were cut through the coating once with a scalpel.
And (4) placing the scratched sample into a scanning electron microscope for testing, and obtaining an initial scratch picture. And (5) introducing the picture into the CAD to obtain the area of the scratch area.
And after 24h, putting the sample into the scanning electron microscope again for observation, and obtaining a repaired picture. And (4) importing the photo into the CAD to obtain the areas of the repair area and the scratch area, and calculating the self-repair rate.
The test results were as follows:
and respectively taking three parallel samples from the control group coating and the experimental group coating, respectively taking three test areas from each sample, carrying out self-repair detection on the samples, and taking the average value of the self-repair detection results as the self-repair rate of the sample coating.
The self-repair rates of the control group coating samples 1, 2 and 3 in the three test areas are shown in table 1, and the average self-repair rates are 2.58%, 2.88% and 3.09%, respectively, so that the self-repair rate of the pure epoxy coating is 2.85%.
TABLE 1 self-repair Rate for control samples 1, 2, 3 in three test zones
The self-repair rates of the experimental group coating samples 1, 2 and 3 in the three test areas are shown in table 2, and the average self-repair rates are 96.04%, 96.80% and 94.52%, respectively, so that the self-repair rate of the experimental group self-repair coating is 95.79%. The experimental group coating has a self-repairing effect compared with the control group coating.
TABLE 2 self-repair Rate of the experimental group samples 1, 2, 3 in the three test zones
And (3) performing an anti-corrosion test on the coating salt spray test of the experimental group:
respectively taking three parallel samples of the pure epoxy resin coating and the bionic intelligent repeatable self-repairing coating, carrying out X-shaped marking on the samples, and then putting the samples into a salt spray testing machine for salt spray corrosion. The result shows that as shown in fig. 6, the pure epoxy resin coating 192h is corroded, the epoxy coating containing 3% of self-repairing microcapsules is not corroded, the corrosion resistance time of the self-repairing coating is prolonged, and the corrosion resistance of the metal is improved compared with the pure epoxy resin coating.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like of the present invention shall be included in the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A spraying method of anticorrosive paint for the outer surface of a marine pipeline of ships is characterized by comprising the following steps: firstly, melting anticorrosive paint powder into liquid, and spraying the liquid onto the inner surface of a seawater pipeline through spraying equipment;
the anticorrosive coating powder is obtained by mixing an epoxy resin coating and a self-repairing microcapsule; the weight ratio of the epoxy resin coating to the self-repairing microcapsule is 100: 3; the self-repairing microcapsule comprises a core material and a wall material wrapping the core material, wherein the core material is tung oil, the wall material is calcium alginate which is a reaction product of a sodium alginate solution and a calcium chloride solution, the sodium alginate solution, the tung oil and an emulsifier are mixed, the mixture is placed in a tissue triturator and stirred for 5min at a rotating speed of 6000r/min to form oil-in-water emulsion drops, and the emulsion is obtained after standing and defoaming; dripping the emulsion into a calcium chloride solution under the pressure of 0.43MPa, filtering out the microcapsule by a 400-mesh paper funnel, washing away unreacted calcium chloride on the surface by deionized water, pre-freezing the microcapsule in a refrigerator for 5 hours, and freeze-drying the microcapsule for 12 hours by a freeze dryer to obtain self-repairing microcapsule powder; the concentration of the sodium alginate solution is 0.5%, the concentration of the calcium chloride solution is 5%, the weight ratio of the sodium alginate to the tung oil is 1:1, and the weight ratio of the sodium alginate to the emulsifier is 5: 1;
the spraying equipment comprises a coating liquefying device (11), a high-pressure pump (10) communicated with a pipeline of the coating liquefying device (11), a plurality of parallel tracks (6) fixed through a supporting structure (15), a walking device arranged on the tracks (6), a circular hose support (3) and a hose (13); the track (6) is parallel to the axis of the pipeline (1) to be sprayed, the track (6) is positioned outside the hose support (3), the running gear on more than one track (6) is connected with the hose support (3) through a connecting rod (16), the running gear on the rest tracks (6) is provided with a laser curing device (8), one end of the hose (13) is connected with the outlet of the high-pressure pump (10), the middle part of the hose passes through a through hole of a connecting block (9) fixedly connected to the bottom of the track (6), the other end of the hose passes through a through hole (17) of the hose support (3) and winds around the inner ring surface of the hose support (3), and the pipe wall of the hose (13) positioned on the inner ring surface of the hose support (3) is provided with a threaded hole, a funnel-shaped spraying nozzle (12) is connected in the threaded hole, and the outer surface of a circular tube at the lower end of the spraying nozzle (12) is provided with threads;
the walking device comprises a base (18), a driving bevel gear (19), a driven bevel gear (21) and an output wheel (20), a walking speed reducer (4) is arranged on the driving bevel gear (19), the walking speed reducer (4) is connected with a walking servo motor (5), the driving bevel gear (19) is in key connection with an output shaft of the traveling speed reducer (4), and is meshed with a driven conical gear (21), a transmission shaft is fixed on a base (18), a driven bevel gear (21) and an output wheel (20) are arranged on the track, the teeth of the output wheel (20) are meshed with the tooth grooves on the track (6), the base on fixedly connected with leading wheel, the leading wheel place in the recess of track (6) both sides.
2. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the emulsifier is one of OP-10, Arabic gum powder, sodium dodecyl benzene sulfonate and TWEEN80, or the mixture of two of the OP-10, the Arabic gum powder, the sodium dodecyl benzene sulfonate and the TWEEN 80.
3. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the epoxy resin coating is E-12(604) epoxy resin.
4. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the liquefaction temperature of the anti-corrosion coating powder is 180-190 ℃.
5. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the coating liquefaction device (11) comprises a heating base and a sealed material box positioned on the heating base, and the material box is communicated with an inlet of the high-pressure pump (10).
6. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the inner circumferential surface of the hose support (3) is evenly provided with clamping ports (2), and the hose (13) is clamped in the clamping ports (2).
7. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the high-pressure pump (10), the motor (5) and the laser curing device (8) are in control connection with a control system.
8. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: the two tracks (6) of the travelling device which are connected with the hose bracket (3) through connecting rods (16) are uniformly distributed at the left side and the right side of the hose bracket (3); the two tracks (6) provided with the laser curing devices (8) are uniformly distributed on the upper side and the lower side of the hose support (3).
9. The spraying method of the anticorrosive paint for the outer surface of the marine pipeline of the ship as claimed in claim 1, characterized in that: one end of a hose (13) in the hose bracket (3) is connected to the inner ring surface of the hose bracket (3) through a fixed lock catch.
Priority Applications (1)
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