CN105711756A - Insulated mounting method for bottom-surface inside vertical supports of A-type independent liquid cargo tank - Google Patents
Insulated mounting method for bottom-surface inside vertical supports of A-type independent liquid cargo tank Download PDFInfo
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- CN105711756A CN105711756A CN201410723699.4A CN201410723699A CN105711756A CN 105711756 A CN105711756 A CN 105711756A CN 201410723699 A CN201410723699 A CN 201410723699A CN 105711756 A CN105711756 A CN 105711756A
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- cargo tank
- vertical bearing
- inside bottom
- expanded material
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Abstract
The invention provides an insulated mounting method for bottom-surface inside vertical supports of an A-type independent liquid cargo tank. The bottom-surface inside vertical supports comprise rib plates, mounting panels, stow-wood grooves and stow-woods. The insulated mounting mainly comprises: using foaming materials to protect each bottom-surface inside vertical support, and preventing heat loss caused by heat transfer between metals. Main steps of the method comprise: surface cleaning for the liquid cargo tank and the bottom-surface inside vertical supports, spraying of an anticorrosive coating, spraying of the foaming material, perfusion of the foaming material through die cavities, and spraying of a protective coating. Through the steps, the problem of inconvenience for insulated mounting of the bottom-surface inside vertical supports can be effectively solved, and because the method is directed at a structure characteristic of the A-type independent liquid cargo tank and spraying of the foaming material and perfusion of the foaming material are adopted at the same time, the insulated effect can be effectively ensured, the tightness of insulated mounting can be guaranteed, and heat outside the liquid cargo tank is prevented from transferred into the liquid cargo tank.
Description
Technical field
The present invention relates to the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface.
Background technology
Liquefied gas carrier is the specialized ships for Low Temperature Liquid goods such as conveying liquified oil gas, liquefied natural gas, and these liquid goods are loaded in the cargo tank of liquefied gas carrier, because the temperature of liquid goods is low, so the outer surface at cargo tank to install insulation.The main purpose of cargo tank insulation is to reduce the evaporation capacity of liquid goods to prevent the heat of outside from entering cargo tank inside.
According to loading the type of liquid goods and working space and other aspects, the cargo tank on liquefied gas carrier is divided into A type, Type B and three kinds of C type, and wherein A type independent liquid cargo tank is mainly slab construction, has complete time shielding；Type B independent liquid cargo tank is slab construction or is spherical tank formula, has part time shielding；C type independent liquid cargo tank is spherical tank formula, without time shielding.Architectural characteristic according to above-mentioned three kinds of cargo tanks and the difference of performance requirement, its methods installing insulation there is also difference.Wherein A type independent liquid cargo tank is connected with hull by a support system, in cargo tank, liquid goods temperature is low, extraneous temperature is far longer than this temperature, so insulation must be reached with a set of effective insulation system and prevent the heat of outside from entering the purpose of cargo tank, reduce the evaporation capacity of liquid in cargo tank cabin；But A type independent liquid cargo tank structure is complicated, and the supporting construction being connected with cargo tank is numerous, for instance anti-rolling bearing, anti-pitching bearing, the vertical bearing in bottom surface etc.；Wherein the vertical bearing in bottom surface includes again the vertical bearing of inside bottom surface and the vertical bearing of outer side bottom surface, the vertical bearing of described inside bottom surface is arranged on the cargo tank both sides near ship length direction centrage, the installation site of the vertical bearing of described outer side bottom surface is at the marginal position of centrage both sides, cargo tank ship length direction, the contact area of the vertical bearing of described outer side bottom surface and cargo tank is more than the contact area of the vertical bearing of inside bottom surface Yu cargo tank, and the load that the vertical bearing of described outer side bottom surface bears is more than the load born of the vertical bearing of inside bottom surface, the vertical bearing of inside bottom surface plays the effect of the auxiliary vertical seat supports cargo tank of outer side bottom surface.
More than comprehensive, not only to solve the insulation of cargo tank main part, more to focus on the insulation between component and cargo tank such as these bearings.The structure of these components often type is complicated, structure is interlocked, inconvenience is not only installed, and technology requires height, also easily occurs that careless omission causes hull general defect, so how better installing insulation on these components is the problem that those skilled in the art need to solve.
Summary of the invention
The technical problem to be solved in the present invention is in that the installation method of the A type vertical bearing insulation of independent liquid cargo tank inside bottom surface providing a kind of step simple, easy to operate, to overcome the drawbacks described above of prior art.
In order to solve above-mentioned technical problem, the present invention adopts the following technical scheme that the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface, the vertical bearing of described inside bottom surface is arranged on the centrage both sides near length direction, the described cargo tank bottom surface, the vertical bearing of described inside bottom surface includes the installation panel being connected by multiple floors with cargo tank, described installation panel bottom surface is provided with chock groove, being provided with chock in described chock groove, the installation method of described insulation comprises the following steps:
One, after cargo tank completes, outer surface and the vertical bearing of inside bottom surface to cargo tank carry out polishing rust cleaning；
Two, cargo tank outer surface after polishing and the vertical bearing rust prevention by applying liquid material priming paint of inside bottom surface, carries out removing surface after anti-corrosive primer solidifies, removes water, oil, dust and other pollutant cargo tank outer surface；
Three, at the vertical bearing spraying corrosion resistant coating of the outer surface of cargo tank and inside bottom surface；
Four, at the anticorrosive coat surface spraying expanded material of cargo tank; the expanded material thickness of spraying is 110mm～135mm; after cargo tank has sprayed; to the vertical abutment portion spray coating foaming material of inside bottom surface installed between panel and cargo tank; expanded material covers all floors, protects coating to expanded material surface spraying after the dry tack free of material to be foamed；
Five, a die cavity is made, described die cavity includes frame and base plate, die cavity is provided with perfusing hole, described base plate has the through hole matched with chock, die cavity frame is enclosed within chock upward and passes through supports support, the base plate of described die cavity does not contact with chock groove, and the upper end-face edge of die cavity frame abuts in the expanded material surface sprayed, and then passes through perfusing hole to mould intra-bladder instillation expanded material；
Six, by after full for perfusion in die cavity expanded material, stand one hour, then by the die cavity demoulding；
Seven, after the die cavity demoulding, coating is protected to the surface spraying of the expanded material of dry perfusion, after protection curing of coatings, the vertical bearing insulation installation of inside bottom surface of cargo tank.
Preferably, the spraying of the expanded material in step 4 reaches the thickness of 110mm～135mm for 4～6 times.
Preferably, in step 5, by cavity sleeve on chock before, lay a pull-up module at die cavity inner surface.
Preferably, in step 5, by cavity sleeve on chock after, packing matcrial between the through hole and chock of die cavity base plate.
Preferably, in described step 6 after the die cavity demoulding, the lower edge at least 20mm of the bottom surface distance chock groove after the expanded material solidification of perfusion.
Preferably, after step 6 terminates, the angle seam place between expanded material and the expanded material of perfusion of spraying arranges sealant, and the angle seam place between expanded material and the chock of perfusion arranges sealant.
Preferably, the protection coating layer thickness in described step 7 is 1mm.
Preferably, edge, any one place at least 50mm of the floor of the outer surface distance vertical bearing of inside bottom surface of described expanded material.
As it has been described above, the installation method of the present invention a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface, have the advantages that
The present invention is directed to the construction features of the A type vertical bearing of independent liquid cargo tank inside bottom surface, adopt spray coating foaming material and perfusion expanded material simultaneously, therefore insulation effect can effectively be ensured, it is ensured that insulating mounting tight, it is prevented that inside the incoming cargo tank of heat outside cargo tank.Additionally, the operating process of the present invention is simple, common staff and operable, it is not necessary to the cost plenty of time goes study.The present invention makes the vertical bearing of cargo tank, inside bottom surface and the organic sealing entirety of insulation three passerby one, efficiently solves the vertical bearing of inside bottom surface and is susceptible to conducting problem and loses the situation of temperature.The present invention is made that contribution for modern liquefied gas carrier field, has popularizing value widely.
Accompanying drawing explanation
Fig. 1 be cargo tank with the installation of liquefied gas carrier hull after schematic diagram.
Fig. 2 is the schematic diagram that insulation do not installed by the vertical bearing of cargo tank inside bottom surface.
Fig. 3 is the vertical bearing scheme of installation of the inside bottom surface on cargo tank bottom surface.
Fig. 4 is the schematic diagram of the spray coating foaming material of the present invention.
Fig. 5 is the schematic diagram of the perfusion expanded material of the present invention.
Fig. 6 is the schematic diagram that the present invention installs insulation.
Fig. 7 is A place enlarged drawing in Fig. 6.
Fig. 8 is B place enlarged drawing in Fig. 6.
Fig. 9 is C place direction view in Fig. 6.
Figure 10 is D-D place view in Fig. 6.
In figure: the 1 cargo tank 11 vertical bearing of inside bottom surface
12 outer side bottom surface vertical bearing 2 floor
21 install panel 22 chock groove
23 chock 31 expanded materials
32 expanded material 41 frames
42 base plate 5 support members
61 protection coatings 62 protect coating
7 sealant 8 perfusing holes
9 hulls
Detailed description of the invention
The structure of Figure of description depicted, ratio, size etc., all only in order to coordinate the disclosed content of description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of the present invention, therefore do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, under not affecting effect that the present invention can be generated by and the purpose that can reach, all should still drop in the scope that disclosed technology contents can be contained.Simultaneously, in this specification cited as " on ", D score, "front", "rear", the term such as " centre ", it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents without essence, when being also considered as the enforceable category of the present invention.
As it is shown on figure 3, the bottom surface of cargo tank 1 includes the vertical bearing of inside bottom surface 11 and the vertical bearing 12 of outer side bottom surface.
The installation method of the present invention a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface, as shown in Figure 1, Figure 2, Figure 3 shows, the vertical bearing of described inside bottom surface 11 is arranged on the centrage both sides in described cargo tank 1 sole length direction, and the length direction of cargo tank 1 is exactly the length direction of hull.The vertical bearing of inside bottom surface 11 of described cargo tank 1 matches with the vertical cooperation bearing on hull 9 inner bottom, the vertical bearing of described inside bottom surface 11 includes the installation panel 21 being connected by multiple floors 2 with cargo tank 1, described installation panel 21 bottom surface is provided with chock groove 22, is provided with chock 23 in described chock groove 22.In conjunction with Fig. 1-Figure 10, the installation method of insulation of the present invention comprises the following steps:
First, after cargo tank 1 completes, cargo tank 1 outer surface and inside bottom surface vertical bearing 11 entirety is carried out polishing rust cleaning, because cargo tank 1 volume is big, weight is big, so it is all cargo tank part of the whole that above-mentioned cargo tank 1 completes, then each several part is lifted in hull 9 and carries out complete cross section splicing.
Cargo tank outer surface after polishing and the vertical bearing 11 rust prevention by applying liquid material priming paint of inside bottom surface, described anti-corrosive primer is the material such as iron oxide red or aluminium powder, and preferred in the present embodiment, described anti-corrosive primer is inorganic silicon yellow zinc chromate primer paint.After anti-corrosive primer solidifies, the vertical bearing 11 of cargo tank outer surface and inside bottom surface is carried out removing surface, removes the water on anti-corrosive primer surface, oil, dust and other pollutant；After cleaning is good, at outer surface and inside bottom surface vertical bearing 11 spraying corrosion resistant coating of cargo tank 1.Described anticorrosive coat is possible not only to prevent water or dampness from entering into follow-up expanded material, and the tensile strength being joined directly together higher than expanded material and cargo tank 1 due to the tensile strength of this anticorrosive coat material, therefore can also improve the bonding situation of cargo tank 1 low-temperature steel surface and expanded material.Described anticorrosive coat material is inorganic zinc primer.
After anticorrosive coat solidifies, as shown in Figure 3, Figure 4, spray coating foaming material 31 on the anticorrosive coat of cargo tank outer surface, the thickness of the expanded material 31 of spraying is 110mm～135mm, after cargo tank 1 has sprayed, to the inside bottom surface vertical bearing 11 part spray coating foaming material 31 installed between panel 21 and cargo tank 1, expanded material 31 covers all floors 2, the space formed is filled up expanded material 31 between adjacent floor 2 simultaneously.In order to make the expanded material thickness of cargo tank outer surface in above-mentioned size range, so expanded material 31 sprays several times, so that the staff of spraying checks the thickness of spraying at any time, reducing error, guarantee coating quality, the staff of spraying can check the thickness of expanded material by elongated ferrum pin.Draw according to actual tests operation, spray the thickness that can reach 110mm～135mm for 4～6 times, and be complete spray coating operations with the minimum time under the premise ensureing coating quality.Also to ensure that each spraying is all spray next layer again after last layer expanded material surface cure when spraying, it is prevented that because expanded material 31 does not solidify and affects insulated heat effect.After the spraying of expanded material 31 terminates; after the dry tack free of material 31 to be foamed; coating 61 is protected to the surface spraying of expanded material 31; described protection coating 61 is to play the effect of mechanical protection and waterproof; the thickness at least 1mm of protection coating 61, by protecting coating 61 can better ensure the service behaviour of entirety.Protection coating 61 sprays several times, and the thickness once sprayed is at about 0.5mm.
According to above it will be appreciated that, cargo tank 1 is the installation carrying out insulating in segmentation, then complete cross section splicing again, complete cross section splicing is generally adopted the mode of welding, welding can produce high temperature, high temperature is easily caused by the thawing of expanded material, burning, even cause fire, so for the generation preventing this dangerous situation, a segment distance to be reserved in the position of the expanded material 31 of spraying and the position having the operations such as welding, thermal cutting, its distance at least to have 500mm, and then guarantees that heat does not interfere with expanded material 31.
After completing above-mentioned work, in conjunction with Fig. 3, Fig. 4, Fig. 5, Fig. 9, Figure 10, make a die cavity, described die cavity includes frame 41 and base plate 42, described die cavity can hold the vertical seat structure of whole inside bottom surface including each floor 2, it is ensured that the tightness of the insulating mounting of the vertical bearing 11 of whole inside bottom surface.Described die cavity is provided with perfusing hole 8, and perfusing hole 8 is generally located on the marginal position of upper end, to prevent the expanded material 32 of follow-up perfusion from revealing；Having the through hole matched with chock 23 on described base plate 42, be enclosed within chock 23 upward by die cavity frame 41 and support location by support member 5, described support member 5 is oil cylinder or jack etc..By cavity sleeve on chock 23 after, packing matcrial between the through hole and chock 23 of die cavity base plate 42, it is prevented that expanded material 32 that may be present is revealed.When installing die cavity, the base plate 42 of die cavity does not contact with chock groove 22, and the upper end-face edge of die cavity frame 41 abuts in expanded material 32 surface sprayed.That die cavity base plate 42 does not contact with chock groove 22 in order that will also fill full expanded material 32 between chock 23 and chock groove 22 when guaranteeing follow-up perfusion expanded material, and prevent chock groove 22 to be exposed and cause insulation imprecision.
After die cavity is had good positioning, by perfusing hole 8 to mould intra-bladder instillation expanded material 32.In this step, for the ease of die cavity in expanded material 3 curing and demolding, described cavity sleeve on chock 23 before, lay a pull-up module at die cavity inner surface, and then facilitate the die cavity demoulding.Stand one hour after die cavity is filled expanded material 3, the expanded material in die cavity is allowed to solidify, support member 5 is removed after solidifying by expanded material 32, to the die cavity demoulding, as shown in Figure 8, draw after the die cavity demoulding through practical operation, the lower edge at least 20mm of the bottom surface distance chock groove 22 after expanded material 32 solidification of perfusion；As Figure 6-Figure 8, after the die cavity demoulding, the angle seam place between the expanded material 31 and the expanded material 32 of perfusion of spraying arranges sealant 7, and the angle seam between expanded material 32 and the chock 23 of perfusion is also provided with sealant 7, is further ensured that insulation effect；Then protecting coating 62 to the surface spraying of the expanded material 32 of dry perfusion, protect coating 62 thickness at least 1mm, protection coating 62 sprays several times, and the thickness once sprayed is at about 0.5mm.
In the implementation process of the present invention, in conjunction with Fig. 3 and Fig. 7, no matter being the expanded material 31 of spraying or the expanded material 32 irrigated, edge, any one place at least 50mm of the floor 2 of its outer surface distance vertical bearing of inside bottom surface 11 after hardening, to guarantee insulation effect.
Heretofore described expanded material 31,32 is polyurethane material, and the spray coating foaming of polyurethane material is a kind of heat preserving mode comparing high praise, through the application of multiple test and low-temperature insulation aspect, is a kind of reliable and durable heat preserving method.Additionally, polyurethane foam material itself has, heat conductivity is low, rate of closed hole is high and some physical features of good mechanical property, and elastic properties of materials is better, it is possible to the deformation of the cargo tank that adaptive temperature difference causes.
The material of heretofore described protection coating 61,62 is polyhydric alcohol or isocyanide amine ester material.
In sum, the installation method of a kind of A of present invention type vertical bearing insulation of independent liquid cargo tank inside bottom surface, it is possible to facilitate the insulating mounting at the vertical bearing place of A type independent liquid cargo tank inside bottom surface.So, the present invention effectively overcomes practical problems more of the prior art thus having significantly high value and using meaning.
Above-mentioned embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention.The present invention also has many aspects can improve under the premise of overall thought, all for those skilled in the art under the spirit and category of the present invention, above-described embodiment can modified or changing.Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention.
Claims (8)
1. the installation method of the A type vertical bearing insulation of independent liquid cargo tank inside bottom surface, it is characterized in that, the vertical bearing of described inside bottom surface (11) is arranged on the centrage both sides near length direction, described cargo tank (1) bottom surface, the vertical bearing of described inside bottom surface (11) includes the installation panel (21) being connected by multiple floors (2) with cargo tank (1), described installation panel (21) bottom surface is provided with chock groove (22), being provided with chock (23) in described chock groove (22), the installation method of described insulation comprises the following steps:
One, after cargo tank (1) completes, outer surface and the vertical bearing of inside bottom surface (11) to cargo tank (1) carry out polishing rust cleaning；
Two, cargo tank outer surface after polishing and inside bottom surface vertical bearing (11) rust prevention by applying liquid material priming paint, carries out removing surface after anti-corrosive primer solidifies, removes water, oil, dust and other pollutant cargo tank outer surface；
Three, at the outer surface of cargo tank (1) and (11) spraying corrosion resistant coating；
Four, at anticorrosive coat surface spraying expanded material (31) of cargo tank (1); expanded material (31) thickness of spraying is 110mm～135mm; after cargo tank (1) has sprayed; to the inside bottom surface vertical bearing (11) part spray coating foaming material (31) installed between panel (21) and cargo tank (1); expanded material (31) covers all floors (2), protects coating (61) to expanded material (3) surface spraying after the dry tack free of material to be foamed (31)；
Five, make a die cavity, described die cavity includes frame (41) and base plate (42), die cavity is provided with perfusing hole (8), described base plate (42) has the through hole matched with chock (23), die cavity frame (41) is enclosed within chock (23) upward above and supported by support member (5), the base plate (42) of described die cavity does not contact with chock groove (22), the upper end-face edge of die cavity frame (41) abuts in expanded material (31) surface sprayed, then pass through perfusing hole (8) to mould intra-bladder instillation expanded material (32)；
Six, by after full for perfusion in die cavity expanded material (32), stand one hour, then by the die cavity demoulding；
Seven, after the die cavity demoulding; coating (62) is protected to the surface spraying of the expanded material (32) of dry perfusion; after protection coating (62) solidifies, inside bottom surface vertical bearing (11) insulating mounting of cargo tank (1) completes.
2. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterised in that: expanded material (31) spraying in step 4 reaches the thickness of 110mm～135mm for 4～6 times.
3. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterised in that: in step 5, by cavity sleeve before chock (23) is upper, lay a pull-up module at die cavity inner surface.
4. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterized in that: in step 5, by cavity sleeve after chock (23) is upper, packing matcrial between the through hole and chock (23) of die cavity base plate (42).
5. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterized in that: in described step 6 after the die cavity demoulding, the lower edge at least 20mm of bottom surface distance chock groove (22) after expanded material (32) solidification of perfusion.
6. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterized in that: after step 6 terminates, angle seam place between the expanded material (31) and the expanded material (32) of perfusion of spraying arranges sealant (7), and the angle seam place between expanded material (32) and the chock (23) of perfusion arranges sealant (7).
7. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterised in that: protection coating (62) thickness in described step 7 is 1mm.
8. the installation method of a kind of A type vertical bearing insulation of independent liquid cargo tank inside bottom surface according to claim 1, it is characterised in that: edge, any one place at least 50mm of the floor (2) of the outer surface distance vertical bearing of inside bottom surface (11) of described expanded material (31,32).
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| CN201410723699.4A CN105711756B (en) | 2014-12-03 | 2014-12-03 | The installation method of the vertical bearing insulation of A type independent liquid cargo tank inside bottom surfaces |
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| CN201410723699.4A CN105711756B (en) | 2014-12-03 | 2014-12-03 | The installation method of the vertical bearing insulation of A type independent liquid cargo tank inside bottom surfaces |
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| CN105711756B CN105711756B (en) | 2017-11-21 |
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Cited By (2)
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| CN109606546A (en) * | 2018-10-31 | 2019-04-12 | 沪东中华造船(集团)有限公司 | A kind of vertical method for supporting for the Type B fuel compartment at container ship step |
| CN114228914A (en) * | 2022-02-10 | 2022-03-25 | 江南造船(集团)有限责任公司 | Heat insulation system of B-type liquid cargo tank and B-type liquid cargo tank |
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| CN105711756B (en) | 2017-11-21 |
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