CN105711754B - The insulating mounting method of A type independent liquid cargo tank segment foldings - Google Patents
The insulating mounting method of A type independent liquid cargo tank segment foldings Download PDFInfo
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- CN105711754B CN105711754B CN201410723472.XA CN201410723472A CN105711754B CN 105711754 B CN105711754 B CN 105711754B CN 201410723472 A CN201410723472 A CN 201410723472A CN 105711754 B CN105711754 B CN 105711754B
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Abstract
The present invention provides a kind of insulating mounting method of A types independent liquid cargo tank segment folding; the present invention is applied after the segmented welding of cargo tank is closed up; the present invention mainly gets up the used insulation protection in commissure between each segmentation; prevent that position while welding from causing thermal losses, key step of the invention includes commissure removing surface between segmentation, spraying corrosion resistant coating, spray coating foaming material, passes through die cavity and irrigate expanded material, sprayed protection coating.When can efficiently solve cargo tank segment folding by above-mentioned steps the problem of insulating mounting inconvenience, and because the present invention is directed to the design feature of A type independent liquid cargo tanks, simultaneously using spray coating foaming material and perfusion expanded material, therefore insulation effect can effectively be ensured, ensure the tight of insulating mounting, prevent the heat outside cargo tank to be passed to inside cargo tank.
Description
Technical field
The present invention relates to a kind of insulating mounting method of A types independent liquid cargo tank segment folding,
Background technology
Liquefied gas carrier is the specialized ships for the Low Temperature Liquid goods such as conveying liquified oil gas, liquefied natural gas, these liquid goods
It is loaded in the cargo tank of liquefied gas carrier, because the temperature of liquid goods is low, insulation is installed in the outer surface of cargo tank.Liquid goods
The main purpose of cabin insulation is to reduce the evaporation capacity of liquid goods to prevent the heat of outside from entering inside cargo tank.
According to the type of loading liquid goods and workplace and other aspects, the cargo tank on liquefied gas carrier is divided into A types, B
Three kinds of type and c-type, wherein A types independent liquid cargo tank is mainly slab construction, there is complete shielding；Type B independent liquid cargo tank is flat
Harden structure is spherical tank formula, there is part time shielding；C-type independent liquid cargo tank is spherical tank formula, without time shielding.According to above-mentioned three kinds of liquid
The architectural characteristic of cargo hold and the difference of performance requirement, it installs the methods of insulation, and there is also difference.Wherein A types independence liquid goods
Cabin is connected by support system with hull, and liquid goods temperature is low in cargo tank, and extraneous temperature is far longer than this temperature, so must
It must be reached insulation with a set of effective insulation system and be prevented that the heat of outside from entering the purpose of cargo tank, reduces liquid goods
The evaporation capacity of liquid in the cabin of cabin；But A type independent liquid cargo tanks are complicated, do not only have the supporting construction being connected with cargo tank, also have
The functional structure such as dome and hydrops groove.In addition, because cargo tank sufficiently bulky, it is necessary to sectional construction and then weld closes up,
So how insulation is preferably installed after closing up is that those skilled in the art need to solve the problems, such as.
The content of the invention
The technical problem to be solved in the present invention is to provide the A types independent liquid cargo tank point that a kind of step is simple and convenient to operate
The insulating mounting method that section is closed up, to overcome the drawbacks described above of prior art.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme that：A kind of A types independent liquid cargo tank segment folding
Insulating mounting method, be divided into multiple sectional constructions, the insulating mounting method bag of the segment folding during cargo tank manufacture
Include following steps：
First, respectively in expanded material thick surface spraying 105mm~135mm after each sectional construction of cargo tank is complete, often
Commissure at least 500mm when the expanded material distance sprayed in individual segmentation is closed up, unnecessary expanded material will remove, really
Recognize and meet that carrying out welding to multiple segmentations after construction requirement closes up；
2nd, after cargo tank integrally closes up, there is no the position of spray coating foaming material around the commissure and weld seam to cargo tank
Put and carry out polishing derusting, rust prevention by applying liquid material priming paint again after polishing derusting, it is clear after anti-corrosive primer solidification to carry out surface to anti-corrosion primer
Reason, water, oil, dust and other pollutants are removed, then to spraying corrosion resistant coating again；
3rd, insulating mounting, the both sides at top welding seam are carried out to the commissure of horizontal level at the top and bottom of cargo tank
Cover plate is pasted on expanded material and at bottom welding seam on the expanded material of both sides, baffle plate is connected with the cover plate, baffle plate is positioned at weldering
At seam between the expanded material of both sides, the cover plate is provided with fill orifice, the foaming material of the cover plate, baffle plate and commissure both sides
The outer surface of material and cargo tank surrounds die cavity, and die cavity irrigates expanded material thereto after enclosing well；
4th, after the expanded material solidification of perfusion, cover plate is removed, to the expanded material surface spraying protective coating of perfusion；
5th, insulating mounting is carried out to the commissure of cargo tank sidewall sections, on the expanded material of side wall commissure both sides
Cover plate is pasted, baffle plate is connected with the cover plate, baffle plate is located between the expanded material of commissure both sides, and the cover plate, which is provided with, to be filled
Orifice, the outer surface of the cover plate, the expanded material of baffle plate and commissure both sides and cargo tank surrounds die cavity, after die cavity encloses well
Expanded material is irrigated thereto；
6th, after the expanded material solidification of perfusion, cover plate is removed, to the expanded material surface spraying protective coating of perfusion,
Complete the insulating mounting of cargo tank segment folding.
Preferably, the expanded material of the expanded material thickness irrigated in step 3 and step 5 and cargo tank surface spraying is thick
Degree is consistent.
Preferably, before cover plate is pasted onto on expanded material in step 3 and step 5, applied in cover plate and baffle inner wall
If one layer of release sheet.
Preferably, the expanded material surface of die cavity bottom surface tilts down in the step 5.
Further, the angle of inclination on the expanded material surface is 10 °~20 °.
Preferably, after removing cover plate in step 4 and step 6, in the expanded material of cargo tank spraying and the foaming of perfusion
Sealant is set at the angle seam between material.
Preferably, the protective coating thickness in the step 4 and step 6 is at least 1mm.
As described above, a kind of insulating mounting method of A types independent liquid cargo tank segment folding of the present invention, has below beneficial to effect
Fruit：
The present invention is directed to the design feature after A type independent liquid cargo tank segment foldings, while uses spray coating foaming material and filling
Note expanded material, therefore can effectively ensure insulation effect, it is ensured that insulating mounting it is tight, prevent the heat outside cargo tank
Inside incoming cargo tank.In addition, the operating process of the present invention is simple, common staff is operable, during without spending a large amount of
Between go to learn.The present invention makes the vertical bearing of cargo tank, outer side bottom surface and insulation three passerby one, and organically sealing is overall, effectively
Ground solves the vertical bearing of outer side bottom surface and conducting problem easily occurs and loses the situation of temperature.The present invention is modern liquefied gas carrier field
Contribution is made that, there is extensive popularizing value.
Brief description of the drawings
Fig. 1 is the segmental structure schematic diagram of cargo tank.
Fig. 2 is schematic diagram after cargo tank segment folding.
Fig. 3 is the enlarged drawing for not laying expanded material at A in Fig. 2.
Fig. 4 is the enlarged drawing of the laying expanded material at A in Fig. 2.
Fig. 5 is the enlarged drawing for not laying expanded material at B in Fig. 2
Fig. 6 is the enlarged drawing for not laying expanded material at B in Fig. 2
In figure：12 commissures of segmentation
The expanded material of 31 expanded material 32
The cover plate of 41 cover plate 42
The die cavity of 51 die cavity 52
6 protective coatings
Embodiment
Structure, ratio, size depicted in Figure of description etc., only to coordinate the content disclosed in specification, with
Understand for those skilled in the art and read, be not limited to the enforceable qualifications of the present invention, therefore do not have technically
Essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size, can be generated not influenceing the present invention
Under effect and the purpose that can reach, all should still it fall in the range of disclosed technology contents can be covered.Meanwhile
Cited such as " on ", " under ", "front", "rear", " centre " term, are merely convenient to the clear of narration in this specification, and
It is not used to limit the enforceable scope of the present invention, its relativeness is altered or modified, in the case where changing technology contents without essence, when
Also it is considered as the enforceable category of the present invention.
As depicted in figs. 1 and 2, because cargo tank is sufficiently bulky, cargo tank is divided into multiple sectional constructions when manufacturing, point
Carry out welding again after section is constructed and close up, with reference to shown in Fig. 1-Fig. 6, a kind of A types independent liquid cargo tank segment folding of the present invention it is exhausted
Edge installation method comprises the following steps：
Each segmentation 1 of cargo tank sprayed several times on the surface of each segmentation respectively after having built reach 105mm~
Expanded material 31 thick 135mm, the preferred thickness in the present embodiment is 120mm；The expanded material sprayed in each segmentation 1
At least 500mm of commissure 2 when 31 distances are closed up, unnecessary expanded material 31 will remove, and confirmation meets after construction requirement to more
Individual segmentation 1 carries out welding and closed up.In the present embodiment, it is necessary to spray 1mm or so guarantor after the dry tack free of expanded material 31
Coating is protected, the material of the protective coating is polyalcohol or isocyanide amine ester material；In addition, in order to avoid damaging spraying when closing up
Expanded material 31, to wait the expanded material 31 of spraying to carry out overall close up after being fully cured again.
As shown in figs 1 to 6, cargo tank closes up by the way of welding, after cargo tank integrally closes up, to cargo tank point
The position for not having spray coating foaming material around commissure 2 and weld seam between section 1 carries out polishing derusting, is sprayed again after polishing derusting
Anti-corrosive primer is applied, removing surface is carried out to anti-corrosion primer after anti-corrosive primer solidification, removes water, oil, dust and other pollutants,
Then to spraying corrosion resistant coating again.The anticorrosive coat can not only prevent water or moisture enters follow-up expanded material, and
Because the tensile strength of this anti-corrosion layer material is higher than the tensile strength that expanded material and cargo tank are joined directly together, therefore can also improve
The bonding situation of cargo tank low temperature steel surface and expanded material.The anti-corrosion layer material is inorganic zinc primer.
With reference to Fig. 3, Fig. 4, after the corrosion-inhibiting coating solidification, expanded material is carried out to the commissure 2 between each segmentation 1
Laying, wherein the described some of commissure 2 is located at the top surface of cargo tank, some is located at the bottom surface of cargo tank, and some is located at liquid goods
The side wall in cabin, in Specific construction, different positions can be constructed simultaneously, according to operating mode substep can also be needed to carry out
Construction.Drawn according to the practical operation of inventor, the sequence of construction of the last side wall in first top surface, again bottom surface is ideal, and reason exists
In will not be impacted after first carrying out insulating mounting to the commissure 2 of cargo tank top surface to the insulating mounting of other commissures 2；
If insulating mounting first is carried out to the commissure 2 of cargo tank side wall, then in the construction of commissure 2 to cargo tank top surface,
Insulation probably to side wall if the debris on cargo tank top surface, instrument drop impacts.So in the present embodiment
Insulating mounting first is carried out to the commissure 2 of cargo tank top horizontal position, then the commissure 2 of cargo tank bottom level position is entered
Row insulating mounting, insulating mounting finally is carried out to the commissure 2 of cargo tank sidewall locations.During concrete operations, at top welding seam
Cover plate 41 is pasted on the expanded material 31 of both sides and at bottom welding seam on the expanded material 31 of both sides, gear is connected with the cover plate 41
Plate, the baffle plate are located between the expanded material 31 of the both sides of commissure 2, and the cover plate 41 is provided with fill orifice, the cover plate 41,
Baffle plate and the outer surface of the expanded material of commissure both sides 31 and cargo tank surround die cavity 51 jointly, after die cavity 51 encloses well,
Packing matcrial between baffle plate and expanded material 31, the expanded material 32 for preventing from subsequently irrigating are revealed.Pass through after ready
Fill orifice irrigates expanded material 32 into die cavity 51.A period of time (at least one hour) is stood, when the expanded material 32 of perfusion is solid
After change, cover plate 41 is removed, to the expanded material surface spraying protective coating 6 of perfusion, at least 1mm of protective coating 6 is thick, wherein
If commissure 2 is located near cargo tank dome, the protective coating at least 3mm is thick.
With reference to Fig. 5, Fig. 6, after the insulating mounting of commissure 2 of cargo tank top surface and bottom surface is good, to cargo tank sidewall sections
Commissure 2 carries out insulating mounting, and cover plate 42, the cover plate 42 are pasted on the expanded material 31 of cargo tank side wall commissure both sides
On be connected with baffle plate, the baffle plate is located between the expanded material 31 of the both sides of commissure 2, and the cover plate 42 is provided with fill orifice, institute
The outer surface of the expanded material 31 and cargo tank of stating cover plate 42, baffle plate and commissure both sides surrounds die cavity 52, die cavity 52 jointly
After enclosing well, the packing matcrial between baffle plate and expanded material 31, the expanded material 32 for preventing from subsequently irrigating is revealed.Prepare just
Expanded material 32 is irrigated into die cavity 52 by fill orifice after thread.A period of time (at least one hour) is stood, when the foaming of perfusion
After material 32 solidifies, cover plate 42 is removed, to the expanded material surface spraying protective coating 6 of perfusion, the protective coating 6 is at least
1mm is thick.When irrigating expanded material 32 in this step, because expanded material 32 is by Action of Gravity Field, so it can be along die cavity
52 inwalls flow downward, if allowing cured expanded material 31 and the 32 upper and lower perpendicular contact of expanded material of perfusion, then when
The dry solidification of expanded material 32 of perfusion can form irregular contact surface with the expanded material 31 of solidification, will result in insulation peace
The problems such as dress is not up to standard, and insulation effect is affected, so in order that the expanded material 32 of perfusion and the expanded material 31 of solidification
Contact is more preferable and keeps contact surface smooth, and then makes insulation effect more preferably, the expanded material of the bottom surface of die cavity 52 described in this step
31 surfaces tilt down.Preferably, the angle of inclination on the surface of expanded material 31 is 10 °~20 °, and wherein angle of inclination is
Contact best results at 15 °.
After protective coating 6 solidifies in cargo tank side wall, the insulating mounting of cargo tank segment folding is completed.
The consistency of thickness of expanded material 31 of the thickness of expanded material 32 irrigated in the present invention and cargo tank surface spraying, and then
Ensure the smooth of cargo tank outer wall entirety.
In the present embodiment, before cover plate 41,42 is pasted onto on expanded material 31, in cover plate 41,42 and baffle plate
Wall lays one layer of release sheet, in order to subsequently remove cover plate 41,42.
In the present embodiment, the angle seam on cargo tank between the expanded material 31 of all sprayings and the expanded material 32 of perfusion
Place is respectively provided with sealant, further sealing, to ensure insulation effect.
Heretofore described protective coating 6 sprays several times in spraying, and the thickness once sprayed is in 0.5mm or so.
Heretofore described expanded material 31,32 is polyurethane material, and the spray coating foaming of polyurethane material is a kind of ratio
It is a kind of reliable and durable insulation by the application in terms of a variety of tests and low-temperature insulation compared with the heat preserving mode of high praise
Method.In addition, polyurethane foam material has in itself, thermal conductivity factor is low, rate of closed hole is high and some physics of good mechanical property are special
Sign, and elastic properties of materials is preferable, the deformation of cargo tank caused by can adapt to temperature difference.
The material of heretofore described protective coating 6 is polyalcohol or isocyanide amine ester material.
In summary, a kind of insulating mounting method of A types independent liquid cargo tank segment folding of the present invention, can facilitate A types only
The insulating mounting that vertical cargo tank indexing is closed up, and the present invention's is simple to operate, is easily mastered, so the present invention effectively overcomes
Some practical problems of the prior art are so as to having very high value and using meaning.
The principle and its effect of the above-mentioned embodiment only illustrative present invention, not for the limitation present invention.This hair
It is bright to also have many aspects to be improved on the premise of without prejudice to overall thought, all can be for those skilled in the art
Without prejudice under the spirit and scope of the present invention, modifications and changes can be carried out to above-described embodiment.Therefore, art such as
Middle tool usually intellectual without departing from disclosed spirit and all equivalent modifications for being completed under technological thought or
Change, should be covered by the claim of the present invention.
Claims (7)
- A kind of 1. insulating mounting method of A types independent liquid cargo tank segment folding, it is characterised in that be divided into during the cargo tank manufacture Multiple sectional constructions, the insulating mounting method of the segment folding comprise the following steps：First, respectively in expanded material (31) thick surface spraying 105mm~135mm after each segmentation (1) of cargo tank has been built, Commissure (2) at least 500mm when expanded material (31) distance sprayed on each segmentation (1) is closed up, unnecessary foaming Material will remove, and confirmation meets that carrying out welding to multiple segmentations (1) after construction requirement closes up；2nd, after cargo tank integrally closes up, to there is no the position of spray coating foaming material around the commissure (2) of cargo tank and weld seam Carry out polishing derusting, rust prevention by applying liquid material priming paint again after polishing derusting, removing surface carried out to anti-corrosion primer after anti-corrosive primer solidification, Water, oil, dust and other pollutants are removed, then spraying corrosion resistant coating again；3rd, insulating mounting, the hair of both sides at top welding seam are carried out to the commissure (2) of horizontal level at the top and bottom of cargo tank Cover plate (41) is pasted on foam material (31) and at bottom welding seam on the expanded material (31) of both sides, gear is connected with the cover plate (41) Plate, baffle plate are located between the expanded material (31) of commissure both sides, and the cover plate (41) is provided with fill orifice, the cover plate (41), baffle plate and the outer surface of the expanded material of commissure both sides (31) and cargo tank surround die cavity (51), and die cavity (51) encloses Expanded material (32) is irrigated thereto after good；4th, after expanded material (32) solidification of perfusion, cover plate (41) is removed, painting is protected to the expanded material surface spraying of perfusion Layer (6)；5th, insulating mounting, the expanded material (31) in side wall commissure both sides are carried out to the commissure (2) of cargo tank sidewall sections It is upper to paste cover plate (42), baffle plate is connected with the cover plate (42), baffle plate is located between the expanded material (31) of commissure both sides, institute State cover plate (42) and be provided with fill orifice, the expanded material (31) and cargo tank of the cover plate (42), baffle plate and commissure both sides Outer surface surround die cavity (52), die cavity (52) enclose it is good after irrigate expanded material (32) thereto；6th, after expanded material (32) solidification of perfusion, cover plate (42) is removed, painting is protected to the expanded material surface spraying of perfusion Layer (6), complete the insulating mounting of cargo tank segment folding.
- 2. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 1, it is characterised in that：Step Three and step 5 in expanded material (32) thickness that irrigates and cargo tank surface spraying expanded material (31) consistency of thickness.
- 3. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 1, it is characterised in that：Step Three and step 5 in cover plate (41,42) is pasted onto on expanded material (31) before, laid in cover plate (41,42) and baffle inner wall One layer of release sheet.
- 4. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 1, it is characterised in that：It is described Expanded material (31) surface of die cavity (52) bottom surface tilts down in step 5.
- 5. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 4, it is characterised in that：It is described The angle of inclination on expanded material (31) surface of die cavity (52) bottom surface is 10 °~20 °.
- 6. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 1, it is characterised in that：Step Four and step 6 in remove cover plate (41,42) after, cargo tank spraying expanded material (31) and irrigate expanded material (32) Between angle seam at set sealant.
- 7. the insulating mounting method of A types independent liquid cargo tank segment folding according to claim 1, it is characterised in that：It is described Protective coating (6) thickness in step 4 and step 6 is at least 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410723472.XA CN105711754B (en) | 2014-12-03 | 2014-12-03 | The insulating mounting method of A type independent liquid cargo tank segment foldings |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410723472.XA CN105711754B (en) | 2014-12-03 | 2014-12-03 | The insulating mounting method of A type independent liquid cargo tank segment foldings |
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| CN105711754A CN105711754A (en) | 2016-06-29 |
| CN105711754B true CN105711754B (en) | 2018-02-06 |
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| CN201410723472.XA Active CN105711754B (en) | 2014-12-03 | 2014-12-03 | The insulating mounting method of A type independent liquid cargo tank segment foldings |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107284603B (en) * | 2017-05-15 | 2019-04-16 | 沪东中华造船(集团)有限公司 | LNG liquid vault segment is the same as tire manufacture, stage by stage folding method |
| CN107953969B (en) * | 2017-11-15 | 2019-05-21 | 广州文冲船厂有限责任公司 | A kind of pitch goods tank segment folding localization method |
| CN113772042A (en) * | 2021-09-26 | 2021-12-10 | 沪东中华造船(集团)有限公司 | Cargo compartment segmentation design method for 8-million-cubic-level thin-film LNG ship and cargo compartment segmentation |
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| US3931424A (en) * | 1973-12-13 | 1976-01-06 | Rockwell International Corporation | Prefabricated thermal insulation structure and method |
| CN102442408A (en) * | 2010-10-09 | 2012-05-09 | 江南造船(集团)有限责任公司 | Vertical supporting structure for cargo tank and inboard bottom of full-refrigerated liquefied gas carrier and mounting method of vertical supporting structure |
| CN102923250A (en) * | 2012-06-27 | 2013-02-13 | 武汉一冶钢结构有限责任公司 | Installation method of shipborne liquid cargo tank saddle seat reinforced by using laminated wood |
| CN103832543A (en) * | 2014-03-19 | 2014-06-04 | 上海江南长兴重工有限责任公司 | Installing structure of liquid tank of large liquefied gas carrier and installation locating method of liquid tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4066184A (en) * | 1976-07-13 | 1978-01-03 | Conch L.N.G. | Thermal insulation systems |
| JP3398723B2 (en) * | 1993-12-01 | 2003-04-21 | 株式会社アイ・エイチ・アイ マリンユナイテッド | Self-supporting rectangular tank for liquid carrier and supporting device therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3931424A (en) * | 1973-12-13 | 1976-01-06 | Rockwell International Corporation | Prefabricated thermal insulation structure and method |
| CN102442408A (en) * | 2010-10-09 | 2012-05-09 | 江南造船(集团)有限责任公司 | Vertical supporting structure for cargo tank and inboard bottom of full-refrigerated liquefied gas carrier and mounting method of vertical supporting structure |
| CN102923250A (en) * | 2012-06-27 | 2013-02-13 | 武汉一冶钢结构有限责任公司 | Installation method of shipborne liquid cargo tank saddle seat reinforced by using laminated wood |
| CN103832543A (en) * | 2014-03-19 | 2014-06-04 | 上海江南长兴重工有限责任公司 | Installing structure of liquid tank of large liquefied gas carrier and installation locating method of liquid tank |
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