CN105711737A - Insulated mounting method for bottom-surface middle rolling prevention supports of A-type independent liquid cargo tank - Google Patents
Insulated mounting method for bottom-surface middle rolling prevention supports of A-type independent liquid cargo tank Download PDFInfo
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- CN105711737A CN105711737A CN201410723710.7A CN201410723710A CN105711737A CN 105711737 A CN105711737 A CN 105711737A CN 201410723710 A CN201410723710 A CN 201410723710A CN 105711737 A CN105711737 A CN 105711737A
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- cargo tank
- rolling bearing
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- expanded material
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Abstract
The invention provides an insulated mounting method for bottom-surface middle rolling prevention supports of an A-type independent liquid cargo tank. The bottom-surface middle rolling prevention 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 middle rolling prevention 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 middle rolling prevention 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 middle rolling prevention 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 anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank 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 end face anti-rolling bearing, the anti-rolling in bottom surface bearing, anti-pitching bearing, vertical bearing etc.；Wherein the anti-rolling in bottom surface includes anti-rolling bearing in the middle of two ends, bottom surface anti-rolling bearing and bottom surface, the anti-rolling bearing in two ends, described bottom surface is arranged on the cargo tank two ends along ship length side, in the middle of described bottom surface, anti-rolling bearing is arranged on the centre position of cargo tank bottom surface, namely between the anti-rolling bearing in two ends, bottom surface, according to actual loading situation and cargo tank duty in use between cargo tank and hull, the volume of the anti-rolling bearing in two ends, described bottom surface is more than the volume of air defence rolling bearing in bottom surface, and then the bearing capacity of the anti-rolling in two ends, bottom surface bearing is higher, structure is more complicated, in the middle of bottom surface, anti-rolling bearing primarily serves the effect of the anti-rolling bearing in auxiliary two ends, 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 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 middle anti-rolling bearing insulation in A type independent liquid cargo tank 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 anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank bottom surface, in the middle of described bottom surface, anti-rolling bearing is arranged on the centre position of described cargo tank bottom surface, in the middle of described bottom surface, the left and right of anti-rolling bearing is respectively arranged at two ends with vertical installation panel, described installation panel is connected with the bottom surface of cargo tank by multiple floors, said two is installed the outside of panel and is respectively equipped with chock groove, described chock groove is equipped with chock, it is characterized in that, the installation method of described insulation comprises the following steps:
One, after cargo tank completes, the middle anti-rolling bearing of outer surface and bottom surface of cargo tank is carried out polishing rust cleaning；
Two, the middle anti-rolling bearing rust prevention by applying liquid material priming paint of cargo tank outer surface and bottom surface after polishing, carries out removing surface after anti-corrosive primer solidifies, removes water, oil, dust and other pollutant cargo tank outer surface；
Three, anti-rolling bearing spraying corrosion resistant coating in the middle of the outer surface of cargo tank and bottom surface；
Four, at the anticorrosive coat surface spraying expanded material of cargo tank, the expanded material thickness of spraying is 110mm～135mm, and material surface to be foamed dries backward expanded material surface spraying protection coating；
Five, in the middle of bottom surface, anti-rolling bearing arranges a die cavity, described die cavity includes frame and base plate, die cavity is provided with perfusing hole, described frame has the through hole matched with the chock at two ends, left and right respectively, described die cavity frame is arranged on the middle anti-rolling bearing in bottom surface upward, the upper end-face edge of die cavity frame abuts in the expanded material surface sprayed, and described die cavity is positioned by support member, and the base plate of described die cavity does not contact with floor, installation panel and chock groove；Then pass 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, anti-rolling bearing insulation installation in the middle of the 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, before being arranged on by die cavity on the middle anti-rolling bearing in bottom surface, lay a pull-up module at die cavity inner surface.
Preferably, in step 5, after die cavity being arranged on the middle anti-rolling bearing in bottom surface, packing matcrial between the through hole and chock of die cavity frame.
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, after the step 6 die cavity demoulding, the left side of the expanded material of perfusion distance left end chock and the right side at least 5mm of right-hand member chock.
Preferably, the protection coating layer thickness in described step 7 is 1mm.
Preferably, edge, any one place at least 50mm of the floor of anti-rolling bearing in the middle of the outer surface distance bottom surface of described expanded material.
As it has been described above, the installation method of anti-rolling bearing insulation in the middle of the present invention a kind of A type independent liquid cargo tank bottom surface, have the advantages that
The present invention is directed to the construction features of anti-rolling bearing in the middle of A type independent liquid cargo tank 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 anti-rolling bearing and the organic sealing entirety of insulation three passerby one in the middle of cargo tank, bottom surface, efficiently solves anti-rolling bearing in the middle of bottom surface and is susceptible to conducting problem and loses warm situation.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 the middle of cargo tank bottom surface, insulation do not installed by anti-rolling bearing.
Fig. 3 is anti-rolling bearing scheme of installation in the middle of the 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-C place direction view in Fig. 6.
Figure 10 is D-D place direction view in Fig. 6.
In figure: the 1 anti-rolling bearing in two ends, cargo tank 11 bottom surface
Anti-rolling bearing 2 floor in the middle of 12 bottom surfaces
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 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 shown in Figure 3, the bottom surface of cargo tank 1 includes anti-rolling bearing 12 in the middle of the anti-rolling in two ends, bottom surface bearing 11 and bottom surface, wherein the anti-rolling bearing 11 in two ends, bottom surface is positioned at the two ends along ship length direction, cargo tank 1 bottom surface, and in the middle of bottom surface, anti-rolling bearing 12 is in the centre position of cargo tank 1 bottom surface.
The installation method of anti-rolling bearing insulation in the middle of the present invention a kind of A type independent liquid cargo tank bottom surface, as shown in Figure 1, Figure 2, Figure 3 shows, in the middle of described bottom surface, anti-rolling bearing 12 is arranged on the centre position of described cargo tank 1 bottom surface, in the middle of described bottom surface, the left and right of anti-rolling bearing 12 is respectively arranged at two ends with vertical installation panel 21, described installation panel 21 is connected with the bottom surface of cargo tank 1 by multiple floors 2, said two is installed the outside of panel 21 and is respectively equipped 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, anti-rolling bearing 12 entirety in the middle of cargo tank 1 outer surface and bottom surface 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.
The middle anti-rolling bearing 12 rust prevention by applying liquid material priming paint of cargo tank outer surface and bottom surface after polishing, 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, anti-rolling bearing 12 in the middle of cargo tank outer surface and bottom surface is carried out removing surface, remove the water on anti-corrosive primer surface, oil, dust and other pollutant；After cleaning is good, anti-rolling bearing 12 spraying corrosion resistant coating in the middle of the outer surface and bottom surface 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 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, it is preferred that coating thickness is 120mm.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, anti-rolling bearing 12 arranges one die cavity of making in the middle of bottom surface, described die cavity includes frame 41 and base plate 42, described die cavity can hold anti-rolling seat structure in the middle of the whole bottom surface including each floor 2, it is ensured that the tightness of the insulating mounting of anti-rolling bearing 12 in the middle of whole bottom surface.Die cavity is provided with perfusing hole, and perfusing hole is generally located on the marginal position of frame 41, to prevent the expanded material 32 of follow-up perfusion from revealing；Described frame 41 has the through hole matched respectively with chock 23, described die cavity frame 41 is arranged on the middle anti-rolling bearing 12 in bottom surface upward, the upper end-face edge of die cavity frame 41 abuts in expanded material 32 surface sprayed, described die cavity supports location by support member 5, and described support member 5 is oil cylinder or jack etc..After on middle to die cavity installation and bottom surface anti-rolling bearing 12, packing matcrial between the through hole and chock 23 of die cavity frame 41, 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 floor 2, installation panel 21 and chock groove 22, its purpose is to guarantee the tightness of insulation, it is prevented that floor 2, installation panel 21 and chock groove 22 transmit with extraneous generation heat.
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, described die cavity lays a pull-up module at die cavity inner surface, and then facilitates the die cavity demoulding before being arranged on the middle anti-rolling bearing 12 in bottom surface.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 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, 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.Chock 23 structure at two ends, left and right, equivalently-sized, as shown in Figure 8, to guarantee after the die cavity demoulding that the expanded material 32 of perfusion is apart from the right side of the left side of left end chock 23 and right-hand member chock 23 at least 5mm, namely allows chock 23 protrude from the surface at least 5mm of expanded material 32.Additionally, as shown in Figure 8, the distance of expanded material 32 outer surface installing the lower surface distance perfusion of panel 21 is at least 20mm, further functions as insulation effect.
In the implementation process of the present invention, shown in Fig. 3, Fig. 7, Fig. 8 and Figure 10, 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 anti-rolling bearing 12 in the middle of its outer surface distance bottom surface 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 anti-rolling bearing insulation in the middle of a kind of A of present invention type independent liquid cargo tank bottom surface, it is possible to facilitate the insulating mounting at anti-rolling bearing place in the middle of A type independent liquid cargo tank 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 anti-rolling bearing insulation in the middle of an A type independent liquid cargo tank bottom surface, it is characterized in that, in the middle of described bottom surface, anti-rolling bearing (12) is arranged on the centre position of described cargo tank (1) bottom surface, in the middle of described bottom surface, the left and right of anti-rolling bearing (12) is respectively arranged at two ends with vertical installation panel (21), described installation panel (21) is connected by the bottom surface of multiple floors (2) with cargo tank (1), said two is installed the outside of panel (21) and is respectively equipped with chock groove (22), described chock groove (22) is equipped with chock (23), the installation method of described insulation comprises the following steps:
One, after cargo tank (1) completes, the middle anti-rolling bearing (12) of outer surface and bottom surface of cargo tank (1) is carried out polishing rust cleaning；
Two, middle anti-rolling bearing (12) the rust prevention by applying liquid material priming paint of cargo tank outer surface and bottom surface after polishing, carries out removing surface after anti-corrosive primer solidifies, removes water, oil, dust and other pollutant cargo tank outer surface；
Three, anti-rolling bearing (12) spraying corrosion resistant coating in the middle of the outer surface of cargo tank (1) and bottom surface；
Four, at anticorrosive coat surface spraying expanded material (31) of cargo tank (1); expanded material (31) thickness of spraying is 110mm～135mm, protects coating (61) to expanded material (3) surface spraying after material to be foamed (31) dry tack free；
Five, in the middle of bottom surface, anti-rolling bearing (12) arranges a die cavity, described die cavity includes frame (41) and base plate (42), die cavity is provided with perfusing hole, described frame (41) has the through hole matched with the chock (23) at two ends, left and right respectively, described die cavity frame (41) is arranged on the middle anti-rolling bearing (12) in bottom surface upward, the upper end-face edge of die cavity frame (41) abuts in expanded material (31) surface sprayed, described die cavity is by support member (5) location, the base plate (42) of described die cavity not with floor (2), panel (21) is installed contact with chock groove (22)；Then pass 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, in the middle of the bottom surface of cargo tank (1), anti-rolling bearing (12) insulating mounting completes.
2. the installation method of anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank 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 anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank bottom surface according to claim 1, it is characterized in that: in step 5, before being arranged on by die cavity on the anti-rolling bearing (12) in centre, bottom surface, lay a pull-up module at die cavity inner surface.
4. the installation method of anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank bottom surface according to claim 1, it is characterized in that: in step 5, after die cavity being arranged on the anti-rolling bearing (12) in centre, bottom surface, packing matcrial between the through hole and chock (23) of die cavity frame (41).
5. the installation method of anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank 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).
6. the installation method of anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank bottom surface according to claim 1, it is characterized in that: after the step 6 die cavity demoulding, the left side of the expanded material (32) of perfusion distance left end chock (23) and the right side at least 5mm of right-hand member chock (23).
7. the installation method of anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank 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 anti-rolling bearing insulation in the middle of a kind of A type independent liquid cargo tank bottom surface according to claim 1, it is characterised in that: edge, any one place at least 50mm of the floor (2) of anti-rolling bearing (12) in the middle of the outer surface distance bottom surface of described expanded material (31,32).
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| CN201410723710.7A CN105711737B (en) | 2014-12-03 | 2014-12-03 | The installation method of anti-rolling bearing insulation in the middle of A type independent liquid cargo tanks bottom surface |
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| CN201410723710.7A CN105711737B (en) | 2014-12-03 | 2014-12-03 | The installation method of anti-rolling bearing insulation in the middle of A type independent liquid cargo tanks bottom surface |
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| CN105711737B CN105711737B (en) | 2017-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106314692A (en) * | 2016-08-29 | 2017-01-11 | 上海斯达瑞船舶海洋工程服务有限公司 | Shaking stopping device of independent type cargo hold and installation method of shaking stopping device |
| CN113682430A (en) * | 2021-09-17 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Insulated mounting method for top rolling-stopping support of B-type independent liquid cargo tank |
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| CN113682430A (en) * | 2021-09-17 | 2021-11-23 | 沪东中华造船(集团)有限公司 | Insulated mounting method for top rolling-stopping support of B-type independent liquid cargo tank |
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| CN105711737B (en) | 2017-10-27 |
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