CN105711751A - Insulated mounting method for corner floating check devices of A-type independent liquid cargo tank - Google Patents
Insulated mounting method for corner floating check devices of A-type independent liquid cargo tank Download PDFInfo
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- CN105711751A CN105711751A CN201410723703.7A CN201410723703A CN105711751A CN 105711751 A CN105711751 A CN 105711751A CN 201410723703 A CN201410723703 A CN 201410723703A CN 105711751 A CN105711751 A CN 105711751A
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- cargo tank
- corner
- stopping device
- floatation stopping
- expanded material
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Abstract
The invention provides an insulated mounting method for corner floating check devices of an A-type independent liquid cargo tank. The corner floating check devices comprise rib plates, mounting panels, stow-wood grooves and stow-woods. The insulated mounting mainly comprises: using foaming materials to protect each corner floating check device, 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 corner floating check devices, 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 corner floating check devices 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 independent liquid cargo tank corner floatation stopping device insulation.
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, vertical bearing, floatation stopping device etc.；Wherein floatation stopping device includes again end face floatation stopping device and corner floatation stopping device, described end face floatation stopping device is used for preventing cargo tank end face from contacting with hull and damaging cargo tank, and described corner floatation stopping device is for preventing the corner of cargo tank from contacting with hull and damaging cargo tank.
More than comprehensive, not only to solve the insulation of cargo tank main part, more to focus on the insulation of the components such as these bearings and cargo tank composition compound body.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 supporting members 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 independent liquid cargo tank corner floatation stopping device insulation 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 independent liquid cargo tank corner floatation stopping device insulation, described corner floatation stopping device is arranged on the corner location that described cargo tank end face intersects with side, described corner floatation stopping device includes the installation panel being connected by multiple floors with cargo tank, described installation panel is angularly disposed, described installed surface plate top 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 corner floatation stopping device to cargo tank carry out polishing rust cleaning；
Two, cargo tank outer surface after polishing and corner floatation stopping device 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 and corner floatation stopping device spraying corrosion resistant coating；
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 corner floatation stopping device part spray coating foaming material installed between panel and cargo tank; expanded material covers whole floors, and material surface to be foamed dries backward expanded material surface spraying protection coating；
Five, a die cavity is set on the floatation stopping device of corner, described die cavity includes frame and cover plate, die cavity is provided with perfusing hole, described cover plate has the through hole matched with chock, after die cavity being arranged on the floatation stopping device of corner, the cover plate of described die cavity does not contact with chock groove, and the edge of die cavity frame is pasted onto 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, protecting coating to the surface spraying of the expanded material of dry perfusion, after protection curing of coatings, the corner floatation stopping device insulating mounting of cargo tank completes.
Preferably, in step 4, the spraying of the expanded material on cargo tank reaches the thickness of 110mm～135mm for 4～6 times.
Preferably, in step 5, before being arranged on by die cavity on the floatation stopping device of corner, lay a pull-up module at die cavity inner surface.
Preferably, in step 5, after die cavity being arranged on the floatation stopping device of corner, packing matcrial between the through hole and chock of die cavity cover plate.
Preferably, after the described step 6 die cavity demoulding, the end face at least 5mm of the expanded material distance chock of perfusion.
Preferably, after step 6 terminates, the angle seam place between expanded material and the expanded material of perfusion of spraying arranges sealant.
Preferably, the protection coating layer thickness in described step 7 is 1mm.
Preferably, any plate face at least 50mm of the floor of the outer surface distance corner floatation stopping device of described expanded material.
Preferably, any corner angle at least 25mm of the floor of the outer surface distance corner floatation stopping device of described invention material
As it has been described above, the installation method of the present invention a kind of A type independent liquid cargo tank corner floatation stopping device insulation, have the advantages that
The present invention is directed to the construction features of A type independent liquid cargo tank corner floatation stopping device, 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 organic sealing entirety of cargo tank, corner floatation stopping device and insulation three passerby one, efficiently solves corner floatation stopping device 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 in Fig. 1, H place corner floatation stopping device does not install insulation.
Fig. 3 is the corner floatation stopping device scheme of installation on cargo tank.
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-C place direction view in Fig. 6.
In figure: 1 cargo tank 11 corner floatation stopping device
12 end face floatation stopping device 2 floors
21 install panel 22 chock groove
23 chock 31 expanded materials
32 expanded material 41 frames
Coating protected by 42 cover plates 61
62 protection coating 7 sealants
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, be provided with corner floatation stopping device 11 between the end face of cargo tank 1 and side, the end face of cargo tank 1 is provided with end face floatation stopping device 12.
The installation method of the present invention a kind of A type independent liquid cargo tank corner floatation stopping device insulation, as shown in Figure 1, Figure 2, Figure 3 shows, described corner floatation stopping device 11 is arranged on the corner location that described cargo tank 1 end face intersects with side, described corner floatation stopping device 11 includes the installation panel 21 being connected by multiple floors 2 with cargo tank 1, described installation panel 21 is angularly disposed, described installation panel 21 end face is provided with chock groove 22, is provided with chock 23 in described chock groove 22.In conjunction with Fig. 1-Fig. 9, 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 corner floatation stopping device 11 entirety are 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 corner floatation stopping device 11 rust prevention by applying liquid material priming paint, 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, cargo tank outer surface and corner floatation stopping device 11 are 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 corner floatation stopping device 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 corner floatation stopping device 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, corner floatation stopping device 11 arranges a die cavity, described die cavity includes frame 41 and cover plate 42, described frame 41 and cover plate 42 form die cavity by the mode spliced, described die cavity can hold whole corner floatation stopping device 11 structure including each floor 2, it is ensured that the tightness of the insulating mounting of whole corner floatation stopping device 11.Described die cavity is provided with perfusing hole, and perfusing hole is generally located on the upper end-face edge position that die cavity is overall, to prevent the expanded material 32 of follow-up perfusion from revealing；Described cover plate 42 has the through hole matched with chock 23.When installing die cavity, cover plate 42 is enclosed within chock 23, then frame 41 and cover plate 42 are stitched together, the edge of frame 41 is pasted onto expanded material 32 surface sprayed again, last packing matcrial between the through hole and chock 23 of cover plate 42, it is prevented that expanded material 32 that may be present is revealed.When installing die cavity, guarantee that the cover plate 42 of die cavity does not contact with chock groove 22, to also fill full expanded material 32 between chock 23 and chock groove 22 when its purpose is to guarantee follow-up perfusion expanded material, and prevent chock groove 22 to be exposed and cause insulation imprecision.As shown in Figure 8, after the described step 6 die cavity demoulding, the expanded material 32 of perfusion is apart from the end face at least 5mm of chock 23, and namely the distance of the expanded material 32 that chock 23 protrudes from perfusion is at least 5mm.
After die cavity is had good positioning, by perfusing hole to mould intra-bladder instillation expanded material 32.In this step, for the ease of die cavity in expanded material 3 curing and demolding, before described die cavity is arranged on corner floatation stopping device 11, lays 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, to the die cavity demoulding after expanded material 32 solidification, as Figure 6-Figure 8, after the die cavity demoulding, 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. 8, no matter it is the expanded material 31 of spraying or the expanded material 32 irrigated, any plate face at least 50mm of the floor 2 of its outer surface distance corner floatation stopping device 11 after hardening；Any corner angle of outer surface distance corner floatation stopping device 11 floor 2 of described expanded material 31,32 and any corner angle at least 25mm of chock groove 22, to guarantee insulation effect.Additionally, as shown in Figure 8, the expanded material 32 outer surface at least 50mm of chock 23 Edge Distance perfusion, further function as the effect of insulation.
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 independent liquid cargo tank corner floatation stopping device insulation, it is possible to facilitate the insulating mounting at floatation stopping device place, A type independent liquid cargo tank corner.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 (9)
1. the installation method of an A type independent liquid cargo tank corner floatation stopping device insulation, it is characterized in that, described corner floatation stopping device (11) is arranged on the corner location that described cargo tank (1) end face intersects with side, described corner floatation stopping device (11) includes the installation panel (21) being connected by multiple floors (2) with cargo tank (1), described installation panel (21) is angularly disposed, described installation panel (21) end face is provided with chock groove (22), described chock groove (22) is provided with chock (23), the installation method of described insulation comprises the following steps:
One, after cargo tank (1) completes, outer surface and corner floatation stopping device (11) to cargo tank (1) carry out polishing rust cleaning；
Two, cargo tank outer surface after polishing and corner floatation stopping device (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 corner floatation stopping device (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 corner floatation stopping device (11) part spray coating foaming material (31) installed between panel (21) and cargo tank (1); expanded material (31) covers whole floor (2), protects coating (61) to expanded material (3) surface spraying after material to be foamed (31) dry tack free；
Five, a die cavity is set on corner floatation stopping device (11), described die cavity includes frame (41) and cover plate (42), die cavity is provided with perfusing hole, described cover plate (42) has the through hole matched with chock (23), after die cavity being arranged on corner floatation stopping device (11), the cover plate (42) of described die cavity does not contact with chock groove (22), the edge of die cavity frame (41) is pasted onto expanded material (31) surface sprayed, and then passes through perfusing hole 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, corner floatation stopping device (11) insulating mounting of cargo tank (1) completes.
2. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterised in that: in step 4, the spraying of the expanded material (31) on cargo tank (1) reaches the thickness of 110mm～135mm for 4～6 times.
3. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterised in that: in step 5, before being arranged on by die cavity on corner floatation stopping device (11), lay a pull-up module at die cavity inner surface.
4. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterized in that: in step 5, after die cavity being arranged on corner floatation stopping device (11), packing matcrial between the through hole and chock (23) of die cavity cover plate (42).
5. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterised in that: after the described step 6 die cavity demoulding, the end face at least 5mm of the expanded material (32) distance chock (23) of perfusion.
6. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterized in that: after step 6 terminates, the angle seam place between the expanded material (31) and the expanded material (32) of perfusion of spraying arranges sealant (7).
7. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, 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 independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterised in that: any plate face at least 50mm of the floor (2) of outer surface distance corner floatation stopping device (11) of described expanded material (31,32).
9. the installation method of a kind of A type independent liquid cargo tank corner according to claim 1 floatation stopping device insulation, it is characterised in that: any corner angle of the floor (2) of outer surface distance corner floatation stopping device (11) of described expanded material (31,32) and any corner angle at least 25mm of chock groove (22).
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| CN201410723703.7A CN105711751B (en) | 2014-12-03 | 2014-12-03 | The installation method of A type independent liquid cargo tanks corner floatation stopping device insulation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113911265A (en) * | 2021-10-15 | 2022-01-11 | 沪东中华造船(集团)有限公司 | Container ship containment system and B-type independent fuel compartment insulation structure thereof |
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