CN106995036B - The restorative procedure of diamond shape independent liquid cargo tank protective layer - Google Patents
The restorative procedure of diamond shape independent liquid cargo tank protective layer Download PDFInfo
- Publication number
- CN106995036B CN106995036B CN201610044427.0A CN201610044427A CN106995036B CN 106995036 B CN106995036 B CN 106995036B CN 201610044427 A CN201610044427 A CN 201610044427A CN 106995036 B CN106995036 B CN 106995036B
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- Prior art keywords
- protective layer
- area
- repaired
- cargo tank
- defect
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Classifications
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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
- B63B71/00—Designing vessels; Predicting their performance
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B11/00—Interior subdivision of hulls
- B63B11/02—Arrangement of bulkheads, e.g. defining cargo spaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B81/00—Repairing or maintaining vessels
Abstract
The present invention provides a kind of restorative procedure of diamond shape independent liquid cargo tank protective layer; the protective layer is laid on the insulating layer of the cargo tank, and the reparation of the protective layer includes mainly inspection to protective layer, determines area to be repaired, cleaned to area to be repaired, being repaired to area to be repaired.The present invention is according to the difference of protective layer defect kind, using different restorative procedures, it is ensured that the laying covering of protective layer energy continuous uniform is on the insulating layer, it is ensured that the insulating layer of cargo tank is not damaged by the external world.The advantage that there are also repairing effects is good by the present invention, repairing quality is high.
Description
Technical field
The present invention relates to the restorative procedures of diamond shape independent liquid cargo tank protective layer in liquefied gas carrier more particularly to liquefied gas carrier.
Background technique
The design temperature of large-scale full-cool liquefied gas carrier (VLGC) is generally -50 degree.Diamond shape independent tank is independent liquid goods
The one kind in cabin, diamond shape independent liquid cargo tank (hereinafter referred to as cargo tank) load cargo temperature it is low, it is therefore necessary to a set of row it
Effective insulation system achievees the effect that keep the temperature and prevent temperature from spreading.Currently, the insulation system of cargo tank is mainly by insulating
Insulating layer (abbreviation insulating layer) and sealer (abbreviation protective layer) two parts composition.This two-part laying must have strictly
Operational procedure to ensure reliable in quality.Also there is stringent inspection to check that program, accurate detection go out to protect after the completion of construction
Existing for sheath the defects of crackle, and repair in time.If the defect of the protective layer cannot repair in time, can to insulate
Layer loses due protection and becomes easy and be damaged.And once insulating layer is damaged, breakage will form notch, in turn
So that the thermal insulating ability decline of entire cargo tank, also affects the operation of hull if serious.Therefore, how high in time
It is those skilled in the art's technical issues that need to address that defective protective layer is repaired on effect ground.
Summary of the invention
The technical problem to be solved in the present invention is that providing a kind of diamond shape independent liquid cargo tank guarantor with strong points, reliable operation
The restorative procedure of sheath.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of diamond shape independent liquid cargo tank protective layer
Restorative procedure, the protective layer is laid on the insulating layer of the cargo tank, and the reparation of the protective layer includes the following steps：
After S1, protective layer are laid, check protective layer thering is the region of crackle and defect to make a mark and conduct
Area to be repaired；
S2, area to be repaired is cleaned using detergent；
S3, the temperature and humidity for measuring repairing environment, the temperature of area to be repaired are higher than 0 DEG C, and 5 DEG C~50 DEG C of room temperature,
Humidity is not higher than 75%；
S4, when area to be repaired is that crackle and maximum width are less than or equal to 1mm, spray new protective layer, spraying area edge
Crackle peripherally and outwardly extend at least 200mm；When area to be repaired is crackle and maximum width is greater than 1mm, first in crackle
Filler is filled, then sprays new protective layer, spraying area peripherally and outwardly extends at least 200mm along crackle；Work as area to be repaired
For defect and when defect area is greater than 3mm2, defect area is first expanded at least one times, is then filled in the defect after expansion
Filler, finally sprays new protective layer, spraying area along defect after expansion peripherally and outwardly extension at least 200mm.
Preferably, in S2, the detergent is ethylene glycol ethyl ether or methylene chloride.
Preferably, in S4, when area to be repaired is crackle and maximum width is greater than 1mm, after filling filler 3~5 days
New protective layer is sprayed again.
Preferably, in S4, when area to be repaired is defect and defect area is greater than 3mm2, after filling filler 3~5 days
New protective layer is sprayed again.
Preferably, in S4, when area to be repaired is crackle and maximum width is less than or equal to 1mm, new protection thickness
Degree is not more than 1mm.
Preferably, in S4, when area to be repaired is crackle and maximum width is greater than 1mm, the thickness of new protective layer is not
Greater than 1mm.
Preferably, in S4, when area to be repaired is defect and defect area is greater than 3mm2, the thickness of new protective layer is not
Greater than 1mm.
Preferably, in S4, when repairing area to be repaired, a room temperature and humidity, room temperature and humidity are recorded per hour
Repair when job requirement is unsatisfactory for suspend.
As described above, the restorative procedure of diamond shape independent liquid cargo tank protective layer of the present invention, has the advantages that：
The present invention is according to the difference of cargo tank protective layer defect kind, using different restorative procedures, it is ensured that protective layer
The laying covering of energy continuous uniform is on the insulating layer, it is ensured that the insulating layer of cargo tank is not damaged by the external world.Through the invention to guarantor
The repairing effect that sheath carries out specific aim reparation is good, repairing quality is high, guarantees the integrality of cargo tank protective layer entirety.
Detailed description of the invention
Fig. 1 is the cargo tank structure sectional view in the present invention.
Fig. 2 is the first crackle view of protective layer in the present invention.
Fig. 3 is the reparation view of the first crackle of protective layer in the present invention.
Fig. 4 is second of crackle view of protective layer in the present invention.
Fig. 5 is the reparation view of second of crackle of protective layer in the present invention.
Fig. 6 is protective layer defect view in the present invention.
Fig. 7 is the reparation view of protective layer defect in the present invention.
In figure：1, cargo tank 2, insulating layer
3, protective layer 31, new protective layer
32, new protective layer 33, new protective layer
4, crackle 5, crackle
51, filler 6, defect
61, filler
Specific embodiment
Structure depicted in Figure of description, ratio, size etc., only to cooperate the revealed content of specification, with
Understand for those skilled in the art and read, be not intended to limit the invention enforceable qualifications, therefore does not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size can be generated not influencing the present invention
Under effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Meanwhile
Cited such as "upper", "lower", "front", "rear", " centre " term in this specification are merely convenient to being illustrated for narration, and
It is non-that to limit the scope of the invention, relativeness is altered or modified, under the content of no substantial changes in technology, when
Also it is considered as the enforceable scope of the present invention.
Diamond shape independent liquid cargo tank is one kind of independent liquid cargo tank, is placed in liquefied gas carrier and is used to load oil gas or natural
The cryogenic cargos such as gas.In order to allow independent liquid cargo tank (hereinafter referred to as cargo tank) to play the role of keeping the temperature and prevent temperature from spreading, such as
Shown in Fig. 1, need successively to lay insulating layer 2 and protective layer 3 in the outer surface of cargo tank 1, the insulating layer 2 plays heat-insulation and heat-preservation
Effect, protective layer 3 is laid on insulating layer 2 and plays a protective role to insulating layer 2.The present invention is the reparation of the protective layer 3
Method, specifically, the reparation of the protective layer 3 includes the following steps in conjunction with Fig. 1-Fig. 7：
Firstly, check after the laying of protective layer 3 is good and is fully cured protective layer 3, there are crackle and defect
Region makes a mark and as area to be repaired.When inspection, the length and width of crackle is measured with graduated scale by manually estimating,
Go out the area of defect by the size estimation of measurement.In addition, then protective layer 3 answers hand herein for that can tear the protective layer 3 fallen manually
It is dynamic to remove and wait subsequent unified reparation.In this step by the data markers measured area to be repaired or unified record in order to
It is subsequent that different defects are targetedly repaired.
After protective layer 3 checks well, area to be repaired is cleaned using detergent, removal dust, oil, rouge and water
Deng.The detergent is the detergents such as ethylene glycol ethyl ether or methylene chloride.
After area to be repaired is cleaned, the temperature and humidity of repairing environment is measured, the temperature of area to be repaired is higher than 0
DEG C, 5 DEG C~50 DEG C of room temperature, humidity is not higher than 75%.Because new protective layer 31 is to spray the insulating layer 2 that is laid in fluid form
On, if area to be repaired temperature is lower than 0 DEG C, new protective layer 31 is easy to freeze, and is unfavorable for carrying out defective locations effective
Ground reparation；And room temperature is too low or the excessively high bonding that also will affect new protective layer 31 with insulating layer 2；Humidity is excessive to will lead to new protection
Layer 31 should not solidify.
After above-mentioned work is carried out, start to repair area to be repaired, uses different reparations for different defects
Method.With reference to Fig. 2, Fig. 3, when area to be repaired is crackle 4 and maximum width is less than or equal to 1mm, the new protective layer of direct spraying
31, by verification experimental verification, spraying area enables to this area to be repaired when peripherally and outwardly extending at least 200mm along crackle 4
New protective layer 31 and original 3 transition of protective layer it is abundant, bonding effect is more preferable.Because new protective layer 31 is to spray in liquid form
It applies, so a small amount of new protective layer 31, which can penetrate into crackle 4, plays repair when spraying.It is new to protect when repairing this defect
The thickness of layer 31 is not more than 1mm.After having sprayed new protective layer 31, the sum of the thickness of new protective layer 31 and original protective layer 3
It is greater than 1mm..
With reference to Fig. 4, Fig. 5, when area to be repaired is crackle 5 and maximum width is greater than 1mm, need first to fill in crackle
Then filler 51 sprays new protective layer 32.By verification experimental verification, spraying area peripherally and outwardly extends at least 200mm along crackle 5
When enable to the new protective layer 32 of this area to be repaired and original 3 transition of protective layer abundant, bonding effect is good.The filler
51 be Ma Supreme Being rouge or sealed binder.When repairing this defect, in order to guarantee repairing effect, sprayed again after filling filler 3~5 days
Then new protective layer 32 sprays new protective layer 32 according to the solidification situation of filler the purpose is to first filler be allowed to be fully cured.By
Test is drawn a conclusion：Spraying that new protective layer 32 is ideal after filling 3 days of filler, filler solidification effect at this time is good,
The whole duty cycle can be effectively ensured.When practical operation, need before spraying new protective layer 32 first to having had been filled with
Filler 51 is checked：Whether the thickness for first checking for filler 51 meets the requirements, ungratified to be modified, is levelling；Then again
It sees whether filler 51, protective layer 3 and insulating layer 2 bond completely, is unsatisfactory for being filled again with filler 51 for bonding requirement, Zhi Daoman
Sufficient job requirement.When repairing this defect, in order to save filler while guaranteeing repairing effect, the thickness of new protective layer 32 is little
In 1mm.After having sprayed new protective layer 32, the sum of the thickness of new protective layer 32 and original protective layer 3 is greater than 1mm..
With reference to Fig. 6, Fig. 7, when area to be repaired is defect 6 and defect area is greater than 3mm2, first 6 area of defect is expanded
At least one times, filler then is filled in the defect after expansion, finally sprays new protective layer 33, spraying area is lacked along after expansion
The peripherally and outwardly extension at least 200mm of damage.Why the area of defect 6 is expanded, is the protective layer 3 because of 6 edge of defect
More crisp, the protective layer 3 that 6 edge of defect is likely to result in when spraying new protective layer 33 is broken, so influence new protective layer 33 with
The bonding effect of protective layer 3 originally.By verification experimental verification, spraying area along defect after expansion peripherally and outwardly extension at least
When 200mm, enable to the new protective layer 33 of this area to be repaired and original 3 transition of protective layer abundant, bonding effect is more preferable.
The filler 61 is Ma Supreme Being rouge or sealed binder.When repairing this defect, in order to guarantee repairing effect, in filling filler 3~5 days
Spray new protective layer 33 again afterwards, purpose is also first filler to be allowed to be fully cured, and then sprays new protect according to the solidification situation of filler
Sheath 33.It draws a conclusion through overtesting：Spray that new protective layer 33 is ideal after filling 5 days of filler, filler at this time is solid
Change works well, and the whole duty cycle can be effectively ensured.When practical operation, spray before new protective layer 33 first to filler 61
It is checked, whether the thickness that also first check for filler 61 meets the requirements, ungratified to be modified, is levelling；Then it sees again
Whether filler 61, protective layer 3 and insulating layer 2 bond completely, being filled again with filler 61 for bonding requirement are unsatisfactory for, until meeting
Job requirement.When repairing this defect, in order to save filler while guaranteeing repairing effect, the thickness of new protective layer 33 is not more than
1mm.After having sprayed new protective layer 33, the sum of the thickness of new protective layer 33 and original protective layer 3 is greater than 1mm..
When occurring defect of the area no more than 3mm2 on protective layer 3, visually it is hardly visible, whole to cargo tank 1
Influence also can be ignored substantially, therefore not need to be repaired.And when occurring intensive needle pore defect on protective layer 3,
Directly new protective layer is sprayed in defect area.
In practical operation, no matter which kind of defect is repaired, requires to record a room temperature and humidity, room per hour
Mild humidity is unsatisfactory for patch work when job requirement and suspends, and then uses the relevant devices such as thermoregulator, dehumidifier by room
In mild humidity regulation to claimed range, or is handled by shipyard according to special status and restart repair.
In conclusion the restorative procedure of diamond shape independent liquid cargo tank protective layer of the present invention, it can be effectively to the protection of cargo tank
Layer is repaired, reliable operation, high-efficient.So the present invention effectively overcome some practical problems in the prior art to
There is very high utility value and uses meaning.
The principle of the present invention and its effect is only illustrated in above embodiment, and is not intended to limit the present invention.This hair
It is bright to be improved under the premise of without prejudice to overall thought there are many more aspect, it all can be for those skilled in the art
Without prejudice under spirit and scope of the invention, can carry out modifications and changes to above-described embodiment.Therefore, technical field such as
Middle all equivalent modifications for being completed without departing from the spirit and technical ideas disclosed in the present invention of tool usually intellectual or
Change, should be covered by the claims of the present invention.
Claims (8)
1. a kind of restorative procedure of diamond shape independent liquid cargo tank protective layer, the protective layer is laid in the insulating layer of the cargo tank
On, which is characterized in that the reparation of the protective layer includes the following steps：
After S1, protective layer are laid, check protective layer thering is the region of crackle and defect to make a mark and as to be repaired
Multiple region；
S2, area to be repaired is cleaned using detergent；
S3, the temperature and humidity for measuring repairing environment, the temperature of area to be repaired are higher than 0 DEG C, and 5 DEG C~50 DEG C of room temperature, humidity
Not higher than 75%；
S4, when area to be repaired is that crackle and maximum width are less than or equal to 1mm, spray new protective layer, spraying area is along splitting
Line peripherally and outwardly extends at least 200mm；When area to be repaired is crackle and maximum width is greater than 1mm, first filled in crackle
Filler, then sprays new protective layer, and spraying area peripherally and outwardly extends at least 200mm along crackle；When area to be repaired is scarce
Damage and defect area be greater than 3mm2 when, first by defect area expand at least one times, then fill filler in the defect after expansion,
Finally spray new protective layer, spraying area along defect after expansion peripherally and outwardly extension at least 200mm.
2. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S2, institute
Stating detergent is ethylene glycol ethyl ether or methylene chloride.
3. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4, when
For crackle and when maximum width is greater than 1mm, filling sprays new protective layer after filler 3~5 days again for area to be repaired.
4. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4, when
For defect and when defect area is greater than 3mm2, filling sprays new protective layer after filler 3~5 days again for area to be repaired.
5. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4, when
For crackle and when maximum width is less than or equal to 1mm, the new degree for protecting thickness is not more than 1mm for area to be repaired.
6. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4, when
For crackle and when maximum width is greater than 1mm, the thickness of new protective layer is not more than 1mm for area to be repaired.
7. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4, when
For defect and when defect area is greater than 3mm2, the thickness of new protective layer is not more than 1mm for area to be repaired.
8. the restorative procedure of diamond shape independent liquid cargo tank protective layer according to claim 1, it is characterised in that：In S4,
When repairing area to be repaired, records a room temperature per hour and humidity, room temperature and humidity are unsatisfactory for repair when job requirement
Pause.
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| CN201610044427.0A CN106995036B (en) | 2016-01-22 | 2016-01-22 | The restorative procedure of diamond shape independent liquid cargo tank protective layer |
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| CN201610044427.0A CN106995036B (en) | 2016-01-22 | 2016-01-22 | The restorative procedure of diamond shape independent liquid cargo tank protective layer |
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| CN113277033B (en) * | 2021-05-24 | 2022-11-11 | 中国舰船研究设计中心 | Minor bulkhead crack repair method |
| JP2024510062A (en) * | 2022-01-24 | 2024-03-06 | 寧徳時代新能源科技股▲分▼有限公司 | Housing and its repair method, related secondary batteries, battery modules, battery packs, and power consumption devices |
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