CN112124521A - Installation method of transverse ring insulation module of liquid cargo tank of LNG ship - Google Patents
Installation method of transverse ring insulation module of liquid cargo tank of LNG ship Download PDFInfo
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- CN112124521A CN112124521A CN202010310729.4A CN202010310729A CN112124521A CN 112124521 A CN112124521 A CN 112124521A CN 202010310729 A CN202010310729 A CN 202010310729A CN 112124521 A CN112124521 A CN 112124521A
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- 238000009413 insulation Methods 0.000 title claims abstract description 159
- 238000009434 installation Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000007788 liquid Substances 0.000 title claims abstract description 15
- 239000011491 glass wool Substances 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 239000011347 resin Substances 0.000 claims description 18
- 229920005989 resin Polymers 0.000 claims description 18
- 238000003825 pressing Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
- B63B73/20—Building or assembling prefabricated vessel modules or parts other than hull blocks, e.g. engine rooms, rudders, propellers, superstructures, berths, holds or tanks
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Abstract
The invention discloses an installation method of a transverse ring insulation module of a liquid cargo tank of an LNG ship, which comprises the following steps: s1, manufacturing a transverse ring insulation module according to the shape of a transverse corner area of the liquid cargo tank, wherein the cross section of the transverse ring insulation module is V-shaped; s2, drawing installation datum lines along the transverse direction and the longitudinal direction of the liquid cargo tank; s3, installing a transverse ring insulation module at a transverse corner area with a downward opening; s4, installing a transverse ring insulation module at a transverse corner area with an upward opening; and S5, installing glass wool between the adjacent transverse ring insulation modules. The invention has high installation precision, can quickly and accurately measure the distance between the transverse ring insulation module and the installation datum line through a specially-made adjusting tool, and greatly improves the installation efficiency.
Description
Technical Field
The invention belongs to the field of an LNG ship cargo hold containment system, and particularly relates to an installation method of a transverse ring insulation module of an LNG ship cargo hold.
Background
The Mark 3 type containment system is a mainstream LNG ship containment system at present, and is insulated by an insulating module, and the insulating module is connected with a ship body through resin. The insulating module is many, heavy, the installation accuracy is high, the installation cycle is long, insulating module installation cycle direct influence whole maintenance system's installation cycle, and especially horizontal insulating module's of ring individual weight exceeds 300 kilograms, and can not bump the resin of bad insulating module bottom in the installation, and the installation accuracy reaches 1 millimeter, relies on the unable installation of accomplishing horizontal insulating module of ring of manpower.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the installation method of the transverse ring insulation module of the liquid cargo tank of the LNG ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides an installation method of a transverse ring insulation module of a liquid cargo tank ship of an LNG ship, which comprises the following steps:
s1, manufacturing a transverse ring insulation module according to the shape of a transverse corner area of the liquid cargo tank, wherein the cross section of the transverse ring insulation module is V-shaped, two rows of fixing bolts are symmetrically arranged on the inner side of the transverse ring insulation module along a middle broken line, two rows of mounting holes are symmetrically arranged along the middle line, and the positions of the mounting holes are matched with those of mounting bolts on a bulkhead;
s2, drawing installation datum lines along the transverse direction and the longitudinal direction of the liquid cargo tank;
s3, installing a transverse ring insulation module at a transverse corner area with a downward opening; the method specifically comprises the following steps:
s31, coating resin on the outer side of the transverse ring insulation module, enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to an installation area by using a flat car;
s32, lifting the transverse ring insulation module by using a forklift, installing the transverse ring insulation module on a machine head of a manipulator, arranging a fixing hole a corresponding to the position of a fixing bolt on the machine head of the manipulator, and enabling the fixing bolt to penetrate through the fixing hole a and be fixed through a fixing nut;
s33, adjusting the manipulator, aligning the mounting hole on the transverse ring insulation module with the mounting bolt on the bulkhead, mounting the transverse ring insulation module on the bulkhead, screwing the mounting nut, ensuring that the mounting bolt and the mounting hole can move relatively, and mounting the adjusting tool;
s34, detaching and removing the manipulator, and finely adjusting the position of the transverse ring insulation module by adjusting the tool to ensure that the distance between the edge of the transverse ring insulation module and the installation reference line is half of the width of the glass wool and the error is +/-1.5 mm;
s35, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, measuring the vertical distance between the inner side of the transverse ring insulation module and the bulkhead by using a caliper, and stopping applying the torque when the error between the measured value and the set value is +/-1.5 mm and the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm;
s36, after the resin is hardened, applying torsion again, and screwing down the mounting nut;
s4, installing a transverse ring insulation module at a transverse corner area with an upward opening; the method specifically comprises the following steps:
s41, coating resin on the outer side of the transverse ring insulation module, enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to an installation area by using a flat car;
s42, lifting the transverse ring insulation module by using a forklift, installing two hoisting tools at two ends of the transverse ring insulation module, arranging fixing holes b corresponding to the fixing bolts on the hoisting tools, and enabling the fixing bolts to penetrate through the fixing holes b and to be fixed through fixing nuts;
s43, sequentially penetrating a round steel through the round holes in the two hoisting tools, placing the two ends of the round steel on the support, manually turning the transverse ring insulation module, and enabling the transverse ring insulation module to rotate along the round steel to enable the outer side of the transverse ring insulation module to face downwards;
s44, hooking a hoisting hole on the hoisting tool by using a winch or a hoist, aligning a mounting hole on the transverse ring insulation module with a mounting bolt on a bulkhead under the assistance of manpower, mounting the transverse ring insulation module on the bulkhead, screwing a mounting nut, ensuring that the mounting bolt and the mounting hole can move relatively, and mounting an adjusting tool;
s45, dismantling and moving away a winch or a winch, and finely adjusting the position of the transverse ring insulation module by adjusting the tool to enable the distance between the edge of the transverse ring insulation module and the installation reference line to be half of the width of the glass wool, wherein the error is +/-1.5 mm;
s46, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, measuring the vertical distance between the inner side of the transverse ring insulation module and the bulkhead by using a caliper, and stopping applying the torque when the error between the measured value and the set value is +/-1.5 mm and the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm;
s47, after the resin is hardened, applying torsion again, and screwing down the mounting nut;
and S5, installing glass wool between the adjacent transverse ring insulation modules.
Preferably, a step of installing a wedge on the bulkhead is further included between the step S2 and the step S3, the flatness is checked after the installation of the wedge, the outer side of the transverse ring insulating module is attached to the bulkhead, and a region of the transverse ring insulating module, which is in contact with the wedge, is not coated with resin.
As a preferred technical solution, in S3 and S4, the transverse ring insulating modules are installed in sequence from the transverse ring insulating module on one side first to the transverse ring insulating module on the other side, and the transverse ring insulating modules on each side are installed in sequence from top to bottom.
Preferably, the vertical distance between the inner side of the transverse ring insulation module and the bulkhead is 170 mm.
Preferably, the distance between the end of the transverse ring insulation module and the installation reference line is 15 mm.
As preferred technical scheme, the hoist and mount frock includes corner steel sheet, floor and circle sleeve pipe, the corner steel sheet is the steel sheet that the cross-section is the v style of calligraphy, with the inside wall phase-match of horizontal ring insulation module, the both ends of corner steel sheet are provided with fixed orifices b, the circle sleeve pipe set up in the inboard of corner steel sheet department of buckling, the circle sleeve pipe with corner steel sheet welded fastening, the circle sleeve pipe runs through and is provided with the round hole, it is fixed that the floor is passed through at the both ends of corner steel sheet, be provided with the hole for hoist on the floor.
According to the preferable technical scheme, the adjusting tool comprises a fixing plate, a threaded column and a pressing block, the threaded plate is installed on one side of the fixing plate, a threaded hole penetrates through the threaded plate, the threaded column is in threaded connection with the threaded hole, and the pressing block is installed at one end of the threaded column.
As a preferred technical scheme, the threaded column is provided with scale marks, and zero scale points of the scale marks are arranged on one side, far away from the threaded column, of the pressing block.
Preferably, when the adjusting tool is used, the end of the fixing plate is overlapped with the installation reference line, the adjusting threaded column is crushed and pressed on the side of the transverse ring insulation module, and the scale at the alignment position of the threaded column and the end of the fixing plate is read, namely the distance between the end of the transverse ring insulation module and the installation reference line.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention has high installation precision, can quickly and accurately measure the distance between the transverse ring insulation module and the installation datum line through a specially-made adjusting tool, and greatly improves the installation efficiency.
(2) According to the invention, different mounting methods are adopted for the transverse ring insulation modules at different angular regions, the mounting sequence is that one side is mounted firstly and the modules are mounted from top to bottom, so that the reciprocating carrying of the tool is avoided, and the manpower and material resources are saved.
(3) According to the invention, the adjacent transverse ring insulation modules and the transverse ring insulation modules are filled with glass wool, so that heat conduction between the transverse ring insulation modules is avoided, and the heat insulation and insulation effects are good.
(4) According to the invention, the wedge block is arranged on the bulkhead and is made of insulating materials, and the wedge block can ensure the installation flatness of the transverse ring insulating module and improve the installation precision.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cargo tank of an LNG carrier.
Fig. 2 is a schematic structural diagram of the hoisting tool.
Fig. 3 is a schematic view of an installation structure of the hoisting tool and the transverse ring insulation module.
Fig. 4 is a schematic structural diagram of the adjusting tool.
Wherein the reference numerals are specified as follows: hoisting tool 1, angle steel plate 11, ribbed slab 12, circular sleeve 13, adjusting tool 2, fixing plate 21, threaded plate 22, threaded column 23 and pressing block 24.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
As shown in fig. 1, the cargo tank of the LNG ship in this embodiment is a structure having a small front bulkhead and a large rear bulkhead, and includes 8 tank sidewalls, and the structure includes 16 lateral corner regions, where corresponding corner edges are BA, DA, BE, DE, BH, DH, BF, DF, BJ, DJ, BG, BK, DG, DK, BC, and DC, where the lateral corner regions corresponding to BA, DA, BE, DE, BH, DH, BF, DF, BJ, and DJ have downward openings, and the lateral corner regions corresponding to BG, BK, DG, DK, BC, and DC have upward openings.
As shown in fig. 2, this embodiment provides a hoist and mount frock 1, including corner steel sheet 11, floor 12 and round sleeve 13, corner steel sheet 11 is the steel sheet of v style of calligraphy for the cross-section, with the inside wall phase-match of horizontal ring insulation module, the both ends of corner steel sheet 11 are provided with fixed orifices b, round sleeve 13 sets up in the inboard of corner steel sheet 11 buckling department, round sleeve 13 and corner steel sheet 11 welded fastening, round sleeve 13 runs through and is provided with the round hole, floor 12 is fixed through at the both ends of corner steel sheet 11, be provided with the hole for hoist on floor 12.
As shown in fig. 4, the present embodiment provides an adjusting tool 2, which includes a fixing plate 21, a threaded plate 22, a threaded column 23, and a pressing block 24, wherein the threaded plate 22 is installed on one side of the fixing plate 21, a threaded hole is formed in the threaded plate 22 in a penetrating manner, the threaded column 23 is in threaded connection with the threaded hole, and the pressing block 24 is installed at one end of the threaded column 23. The threaded column 23 is provided with scale marks, and zero scale points of the scale marks are arranged on one side of the pressing block 24, which is far away from the threaded column 23.
The embodiment provides an installation method of a transverse ring insulation module of a liquid cargo tank of an LNG ship, which comprises the following steps:
s1, manufacturing a transverse ring insulation module according to the shape of a transverse corner area of the liquid cargo tank, wherein the cross section of the transverse ring insulation module is V-shaped, two rows of fixing bolts are symmetrically arranged on the inner side of the transverse ring insulation module along a middle broken line, two rows of mounting holes are symmetrically arranged along the middle broken line, and the positions of the mounting holes are matched with the mounting bolts on the tank wall.
S2, drawing installation datum lines along the transverse direction and the longitudinal direction of the liquid cargo tank; the installation reference line is used for controlling the distance between the adjacent transverse ring insulation modules, and the gap between the transverse ring insulation modules is used for installing glass wool. And installing a wedge block on the cabin wall, wherein the wedge block is made of an insulating material with certain elasticity. And after the wedge block is installed, the flatness is checked, the outer side of the transverse ring insulation module is attached to the wedge block when the transverse ring insulation module is installed on the bulkhead, and the area, in contact with the wedge block, of the transverse ring insulation module is not coated with resin.
S3, installing transverse ring insulation modules at transverse corner regions with downward openings, namely the transverse ring insulation modules corresponding to the transverse corner regions at the corner edges of BA, DA, BE, DE, BH, DH, BF, DF, BJ and DJ in the sequence of BA/DA/BE/BH/BF/BJ/DE/DH/DF/DJ; the method specifically comprises the following steps:
and S31, coating resin on the outer side of the transverse ring insulation module (resin is not coated on the position attached with the wedge block), enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to an installation area by using a flat car.
And S32, lifting the transverse ring insulation module by using a forklift, installing the transverse ring insulation module on a machine head of the manipulator, arranging a fixing hole a corresponding to the position of the fixing bolt on the machine head of the manipulator, and enabling the fixing bolt to penetrate through the fixing hole a and be fixed through a fixing nut.
And S33, adjusting the mechanical arm, wherein the mechanical arm can move up and down at a certain angle, aligning the mounting hole in the transverse ring insulation module with the mounting bolt on the bulkhead, mounting the transverse ring insulation module on the bulkhead, screwing the mounting nut, ensuring that the mounting bolt and the mounting hole can move relatively, and mounting the adjusting tool 2.
And S34, removing and moving the manipulator, and finely adjusting the position of the transverse ring insulation module through the adjusting tool 2, wherein the mounting hole is a long hole, and the mounting bolt and the mounting hole can move relatively, so that the adjustment can be carried out. After the adjustment is finished, the distance between the edge of the transverse ring insulation module and the installation reference line is half of the width of the glass wool, namely 15mm, and the error is +/-1.5 mm. When the fixture is used, the end part of the fixing plate 21 is overlapped with the installation reference line, the adjusting threaded column 23 is crushed and pressed on the side part of the transverse ring insulation module, and the scale at the alignment position of the threaded column 23 and the end part of the fixing plate 21 is read, namely the distance between the end part of the transverse ring insulation module and the installation reference line.
S35, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, wherein the height of the transverse ring insulation module is adjustable because the wedge block is elastic, a caliper is used to measure the vertical distance between the inner side of the transverse ring insulation module and the bulkhead, and when the error between the measured value and the set value is +/-1.5 mm, the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm, the application of the torque is stopped.
And S36, after the resin is hardened, applying torsion again and screwing the mounting nut.
S4, installing transverse ring insulation modules at transverse corner areas with upward openings, namely transverse ring insulation modules corresponding to the transverse corner areas at corner edges of BG, BK, DG and DK, wherein the installing sequence is BG, BK, DG and DK; the method specifically comprises the following steps:
and S41, coating resin on the outer side of the transverse ring insulation module, enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to the installation area by using a flat car.
S42, lifting the transverse ring insulation module by using a forklift, installing two hoisting tools 1 at two ends of the transverse ring insulation module, arranging fixing holes b corresponding to the positions of the fixing bolts on the hoisting tools 1, and enabling the fixing bolts to penetrate through the fixing holes b and to be fixed through fixing nuts. The assembled structure is shown in fig. 3.
S43, sequentially passing a round steel through the round holes in the two hoisting tools 1, placing the two ends of the round steel on the support, manually turning the transverse ring insulation module, and enabling the transverse ring insulation module to rotate along the round steel, so that the outer side of the transverse ring insulation module faces downwards.
S44, the steps are divided into two conditions, for the installation of the transverse ring insulation modules at the transverse corner regions of BG and BK, 2 windlasses are installed on a scaffold on the layer above the transverse corner regions, the hoisting hooks of the windlasses are hung on the hoisting holes, the fishhooks of the two windlasses are lifted alternately, the inclination angle of the transverse ring insulation module is adjusted, the installation holes in the transverse ring insulation module are aligned with the installation bolts on the bulkhead through manual assistance, the transverse ring insulation module is installed on the bulkhead, the installation nuts are screwed on, the relative movement between the installation bolts and the installation holes is ensured, and the adjusting tool 2 is installed. For the installation of the transverse ring insulation modules at the DG and DK transverse corner regions, a winch is placed above the installed layer, a disc on the winch tightly props against a bulkhead and is fixed with the winch, a winch lifting hook is hung on a hoisting hole through a steel wire rope, a mounting hole in the transverse ring insulation module is aligned with a mounting bolt on the bulkhead through manual assistance, the transverse ring insulation module is installed on the bulkhead, a mounting nut is screwed on the mounting bolt, the mounting bolt and the mounting hole can move relatively, and the adjusting tool 2 is installed.
And S45, dismantling and moving away the winch or the winch, and finely adjusting the position of the transverse ring insulation module by adjusting the tool 2 to enable the distance between the edge of the transverse ring insulation module and the installation reference line to be half of the width of the glass wool, wherein the error is +/-1.5 mm. When the adjusting tool 2 is used, the end of the fixing plate 21 coincides with the installation reference line, the adjusting threaded column 23 collapses and is pressed on the side of the transverse ring insulation module, and the scale at the alignment position of the threaded column 23 and the end of the fixing plate 21 is read, namely the distance between the end of the transverse ring insulation module and the installation reference line.
And S46, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, measuring the vertical distance between the inner side of the transverse ring insulation module and the bulkhead by using a caliper, and stopping applying the torque when the error between the measured value and the set value is +/-1.5 mm and the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm.
And S47, after the resin is hardened, applying torsion again and screwing the mounting nut.
And S5, installing glass wool between the adjacent transverse ring insulation modules.
Wherein the vertical distance between the inner side of the transverse ring insulation module and the bulkhead is set to be 170 mm.
Wherein, the distance between the end of the transverse ring insulation module and the installation datum line is 15 mm.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (9)
1. The method for installing the transverse ring insulation module of the liquid cargo tank of the LNG ship is characterized by comprising the following steps of:
s1, manufacturing a transverse ring insulation module according to the shape of a transverse corner area of the liquid cargo tank, wherein the cross section of the transverse ring insulation module is V-shaped, two rows of fixing bolts are symmetrically arranged on the inner side of the transverse ring insulation module along a middle broken line, two rows of mounting holes are symmetrically arranged along the middle line, and the positions of the mounting holes are matched with those of mounting bolts on a bulkhead;
s2, drawing installation datum lines along the transverse direction and the longitudinal direction of the liquid cargo tank;
s3, installing a transverse ring insulation module at a transverse corner area with a downward opening; the method specifically comprises the following steps:
s31, coating resin on the outer side of the transverse ring insulation module, enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to an installation area by using a flat car;
s32, lifting the transverse ring insulation module by using a forklift, installing the transverse ring insulation module on a machine head of a manipulator, arranging a fixing hole a corresponding to the position of a fixing bolt on the machine head of the manipulator, and enabling the fixing bolt to penetrate through the fixing hole a and be fixed through a fixing nut;
s33, adjusting the manipulator, aligning the mounting hole on the transverse ring insulation module with the mounting bolt on the bulkhead, mounting the transverse ring insulation module on the bulkhead, screwing the mounting nut, ensuring that the mounting bolt and the mounting hole can move relatively, and mounting the adjusting tool;
s34, detaching and removing the manipulator, and finely adjusting the position of the transverse ring insulation module by adjusting the tool to ensure that the distance between the edge of the transverse ring insulation module and the installation reference line is half of the width of the glass wool and the error is +/-1.5 mm;
s35, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, measuring the vertical distance between the inner side of the transverse ring insulation module and the bulkhead by using a caliper, and stopping applying the torque when the error between the measured value and the set value is +/-1.5 mm and the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm;
s36, after the resin is hardened, applying torsion again, and screwing down the mounting nut;
s4, installing a transverse ring insulation module at a transverse corner area with an upward opening; the method specifically comprises the following steps:
s41, coating resin on the outer side of the transverse ring insulation module, enabling the outer side of the transverse ring insulation module to face upwards, and conveying the transverse ring insulation module to an installation area by using a flat car;
s42, lifting the transverse ring insulation module by using a forklift, installing two hoisting tools at two ends of the transverse ring insulation module, arranging fixing holes b corresponding to the fixing bolts on the hoisting tools, and enabling the fixing bolts to penetrate through the fixing holes b and to be fixed through fixing nuts;
s43, sequentially penetrating a round steel through the round holes in the two hoisting tools, placing the two ends of the round steel on the support, manually turning the transverse ring insulation module, and enabling the transverse ring insulation module to rotate along the round steel to enable the outer side of the transverse ring insulation module to face downwards;
s44, hooking a hoisting hole on the hoisting tool by using a winch or a hoist, aligning a mounting hole on the transverse ring insulation module with a mounting bolt on a bulkhead under the assistance of manpower, mounting the transverse ring insulation module on the bulkhead, screwing a mounting nut, ensuring that the mounting bolt and the mounting hole can move relatively, and mounting an adjusting tool;
s45, dismantling and moving away a winch or a winch, and finely adjusting the position of the transverse ring insulation module by adjusting the tool to enable the distance between the edge of the transverse ring insulation module and the installation reference line to be half of the width of the glass wool, wherein the error is +/-1.5 mm;
s46, applying torque to the mounting nut by using a torque wrench to adjust the height of the transverse ring insulation module, measuring the vertical distance between the inner side of the transverse ring insulation module and the bulkhead by using a caliper, and stopping applying the torque when the error between the measured value and the set value is +/-1.5 mm and the height difference between the adjacent transverse ring insulation modules is +/-1.5 mm;
s47, after the resin is hardened, applying torsion again, and screwing down the mounting nut;
and S5, installing glass wool between the adjacent transverse ring insulation modules.
2. The method of installing the transverse ring insulation module for the cargo tank of the LNG carrier according to claim 1, wherein the step between the step S2 and the step S3 further comprises the step of installing wedges on the tank wall, the flatness of the wedges is checked after the installation of the wedges, the outer sides of the transverse ring insulation module are fitted with the wedges when the transverse ring insulation module is installed on the tank wall, and the regions of the transverse ring insulation module which are in contact with the wedges are not coated with resin.
3. The method of claim 1, wherein the transverse ring insulating modules are installed in sequence from one side of the transverse ring insulating module to the other side of the transverse ring insulating module in steps S3 and S4, wherein the transverse ring insulating modules are installed in sequence from top to bottom.
4. The method for installing the transverse ring insulating module of the cargo tank of the LNG ship as set forth in claim 1, wherein the vertical distance between the inside of the transverse ring insulating module and the bulkhead is set to a value of 170 mm.
5. The method for installing the transverse ring insulation module of the cargo tank of the LNG ship as claimed in claim 1, wherein the distance between the end of the transverse ring insulation module and the installation reference line is 15 mm.
6. The method for installing the transverse ring insulation module of the LNG carrier cargo tank according to claim 1, wherein the hoisting tool comprises a corner steel plate, a rib plate and a circular sleeve, the corner steel plate is a steel plate with a v-shaped cross section and matched with the inner side wall of the transverse ring insulation module, fixing holes b are formed in two ends of the corner steel plate, the circular sleeve is arranged on the inner side of the bent portion of the corner steel plate, the circular sleeve and the corner steel plate are welded and fixed, the circular sleeve penetrates through the circular hole, two ends of the corner steel plate are fixed through the rib plate, and hoisting holes are formed in the rib plate.
7. The method for installing the transverse ring insulation module of the LNG carrier cargo tank according to claim 1, wherein the adjusting tool comprises a fixed plate, a threaded column and a pressing block, the threaded plate is installed on one side of the fixed plate, a threaded hole is formed in the threaded plate in a penetrating mode, the threaded column is in threaded connection with the threaded hole, and the pressing block is installed at one end of the threaded column.
8. The method for installing the transverse ring insulation module of the cargo tank of the LNG carrier as claimed in claim 7, wherein the threaded column is provided with a scale mark, and a zero scale point of the scale mark is arranged on a side of the pressure block away from the threaded column.
9. The method for installing the transverse ring insulation module of the cargo tank of the LNG carrier according to claim 8, wherein the adjusting means is adapted to align the end of the fixing plate with the installation reference line, the adjusting screw post is adapted to crush the side of the transverse ring insulation module, and the scale where the screw post is aligned with the end of the fixing plate is read, which is the distance between the end of the transverse ring insulation module and the installation reference line.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115351503A (en) * | 2022-07-29 | 2022-11-18 | 沪东中华造船(集团)有限公司 | Installation method for insulating module in corner area of thin film tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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Application publication date: 20201225 |