CN113978651A - Method for installing liquid dome angle steel piece of MARK3 type liquid cargo tank containment system - Google Patents
Method for installing liquid dome angle steel piece of MARK3 type liquid cargo tank containment system Download PDFInfo
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- CN113978651A CN113978651A CN202111311884.9A CN202111311884A CN113978651A CN 113978651 A CN113978651 A CN 113978651A CN 202111311884 A CN202111311884 A CN 202111311884A CN 113978651 A CN113978651 A CN 113978651A
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- angle steel
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- glue
- angle
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 65
- 239000010959 steel Substances 0.000 title claims abstract description 65
- 239000007788 liquid Substances 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 21
- 101001059429 Homo sapiens MAP/microtubule affinity-regulating kinase 3 Proteins 0.000 title claims abstract description 16
- 102100028920 MAP/microtubule affinity-regulating kinase 3 Human genes 0.000 title claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 28
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 18
- 239000010935 stainless steel Substances 0.000 claims abstract description 18
- 238000003466 welding Methods 0.000 claims abstract description 16
- 239000002390 adhesive tape Substances 0.000 claims abstract description 9
- 238000004140 cleaning Methods 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract description 4
- 238000000576 coating method Methods 0.000 claims abstract description 4
- 238000004381 surface treatment Methods 0.000 claims abstract description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 description 10
- 238000001125 extrusion Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
Images
Classifications
-
- 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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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a method for installing a liquid dome angle steel piece of a MARK3 type liquid cargo hold containment system, which comprises the following steps: step one, shielding, adhering and perforating liquid domes; secondly, confirming the bolt hole state; step three, determining the adhesion size; step four, adhesive tape is pasted; step five, slightly adjusting the angle of the steel part; sixthly, cleaning the adhesion surface; step seven, coating glue and installing the angle steel piece, and waiting for the glue to be hardened; step eight, surface treatment after hardening; and step nine, screwing the torsion on the nut and performing spot welding on the nut. Practice proves that the method is not easy to cause the damage of the FSB adhesion of the stainless steel in the corner area of the liquid dome in the construction process, the quality is reliable, and the good tightness experiment result of the liquid dome area is ensured. The invention has simple manufacturing process, convenient operation and high safety factor, and improves the working efficiency.
Description
Technical Field
The invention belongs to the technical field of construction of ship liquid cargo tanks, and particularly relates to a method for installing a liquid dome angle steel piece of a MARK3 type liquid cargo tank containment system.
Background
The installation of the liquid dome angle steel piece at the stainless steel adhesion part of the liquid dome angle area of the MARK3 type liquid cargo tank containment system is one of the key steps of the whole liquid dome angle area construction, and the construction quality of the area is the important weight for ensuring the complete shielding and the sealing performance of the liquid dome. If the installation strength and reliability of the liquid dome angle steel piece do not reach the standard, the liquid dome angle steel piece cannot play the deformation stress of FSB adhesion of the dispersion dome stainless steel, and the risk of secondary shielding leakage of the liquefied natural gas can occur in the transportation process of-170 ℃, so that the liquefied natural gas leakage is caused, and serious accidents of ship damage and death are caused. Therefore, the requirement on the installation accuracy of the liquid dome angle steel part is high, and a set of reliable angle steel part installation method is needed to ensure the construction quality.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides the method for installing the liquid dome angle steel piece of the MARK3 type liquid cargo hold containment system, which can control the extrusion glue forming and glue overflowing of the liquid dome stainless steel angle steel piece in the installation process, improve the installation reliability and the sealing property of the angle steel piece, improve the installation efficiency of the angle steel piece and reduce the leakage risk of the subsequent real ship operation.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a method for installing a liquid dome angle steel piece of a MARK3 type liquid cargo hold containment system, which comprises the following steps:
step one, shielding, adhering and perforating liquid domes; digging bolt holes covered when FSB (free space group) in the stainless steel corner area of the liquid dome are adhered;
confirming the bolt hole state, and checking the screw tooth state of the bolt hole;
step three, determining the adhesion size according to the size of the angle steel, and drawing an adhesion area line at the position of the outer edge of each edge of the angle steel by using a pencil;
fourthly, pasting an adhesive tape on the periphery of the line of the adhesion area;
fifthly, slightly adjusting the angle of the steel part to enable the angle of the steel part to be matched with the angle of the stainless steel angle area of the liquid dome;
cleaning the adhesion surface;
coating glue on the angle steel piece and installing the angle steel piece, applying pressure on the angle steel piece to extrude the glue, and fixing the angle steel piece by using a bolt and a nut;
step eight, after the glue is hardened, carrying out surface treatment, tearing off the adhesive tape, and removing the redundant glue in the stainless steel corner area of the liquid dome;
step nine, spot welding the nut with the angle steel piece after torsion;
preferably, in the first step, the FSB notch at the bolt opening position is rounded.
In the second step, if the thread is damaged, tapping is performed again.
In the third step, 100% of edge glue overflow is needed after the angle steel is adhered, and the line of the adhered area exceeds the edge of the angle steel by 5-8 mm.
As a preferable technical scheme, in the sixth step, a dust collector is used to clean the adhesion area in cooperation with the brush head.
As a preferred technical solution, in the seventh step, a gap between the bolt and the glue is 1 mm.
As a preferable technical scheme, in the step eight, the glue is hardened at normal temperature for 24 hours.
Preferably, in the ninth step, the torque value applied to the nut is 3-5N/m, the spot welding is wire-added spot welding, and the spot welding positions are between the nut and the angle steel member and between the nut and the bolt.
Compared with the prior art, the invention has the following technical effects: practice proves that the method is not easy to cause the damage of the FSB adhesion of the stainless steel in the corner area of the liquid dome in the construction process, the quality is reliable, and the good tightness experiment result of the liquid dome area is ensured. The invention has simple manufacturing process, convenient operation and high safety factor, and improves the working efficiency.
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 view of the installation of the angle steel member of the present invention.
Wherein the reference numerals are specified as follows: the liquid dome stainless steel corner region 1, the angle steel piece 2 and the nut 3.
Detailed Description
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.
The embodiment provides an installation method of a liquid dome angle steel piece of a MARK3 type liquid cargo hold containment system, which comprises the following steps:
step one, shielding and adhering holes of the liquid dome, excavating bolt holes covered by the stainless steel corner area 1 of the liquid dome when the FSB is adhered (the opening needs to be kept round and smooth, and the FSB is prevented from being torn along the edge of an irregular cut);
confirming the bolt hole state, and checking the screw tooth state of the bolt hole;
step three, determining the adhesion size, and drawing an adhesion area line (100% of edge glue overflow is needed after the angle steel pieces are adhered) by adding 5mm of pencil on each side according to the size of the angle steel pieces 2;
sticking an adhesive tape, namely sticking the adhesive tape according to the line of the adhesive area drawn by the pencil;
fifthly, slightly adjusting the angle of the steel part 2 to enable the steel part to be matched with the angle of the liquid dome stainless steel angle area 1;
cleaning the adhesion surface, namely cleaning the adhesion area by using a dust collector and matching a brush head;
step seven, coating glue and installing the angle steel piece 2, extruding the glue (Bostik XPU 18411A 3/B) on the reverse side of the angle steel piece 2, and fixing the angle steel piece 2 by using a bolt and a nut 3 (the thickness of a glue layer after extrusion is about 1 mm);
step eight, waiting for glue hardening (at least 24 hours); after hardening, performing surface treatment, tearing off the adhesive tape, and removing redundant glue on the surface of the liquid dome stainless steel corner area 1;
ninth, the nut 3 is subjected to torsion and spot welding of the nut, a torque wrench is used for applying 3-5N/m of torsion on the nut 3, and then spot welding (the nut 3 and the bolt, the nut 3 and the angle steel piece 2) is completed (the temperature transmitted to the FSB during spot welding can not exceed 100 ℃)
In the first step, the bolt hole opening position FSB needs to be kept smooth, and the FSB is prevented from being torn along the edge of the irregular notch.
In the second step, the state of the screw thread of the bolt hole needs to be checked for subsequent bolt installation, and if the screw thread is damaged, tapping needs to be carried out again.
In the third step, 100% of edge glue overflow is needed after the angle steel piece 2 is adhered, and the line of the adhered area needs to exceed the size of the angle steel piece by 5-8 mm.
And in the third step and the fourth step, the used pencils and the used adhesive tapes are required to pass the GTT compatibility experiment certification.
In the fifth step, the angle between the prefabricated angle steel piece 2 and the liquid dome stainless steel angle area 1 may be mismatched, and a hammer or a specific bench clamp is required to adjust the angle so as to match the angle.
In the seventh step, enough Bostik XPU 18411 mixed glue needs to be coated on the back surface of the angle steel piece 2, and a glue gap of about 1mm is reserved when the angle steel piece 2 is fixed by bolts and nuts. The hardening time of the glue under the normal temperature (20-30 ℃) is at least 24 hours.
In the ninth step, the torque value applied to the nut 3 is 3-5N/m, spot welding is wire-added spot welding (308L welding wires are used, and the stainless steel materials involved in installation are all 304L materials), two positions are required to be completed, the spot welding temperature is controlled between the nut 3 and the angle steel piece 2 and between the nut 3 and the bolt, and the temperature transmitted to the adhesion of the stainless steel FSB in the liquid dome area cannot exceed 100 ℃.
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 (8)
- The method for installing the liquid dome angle steel piece of the MARK3 type liquid cargo tank containment system is characterized by comprising the following steps of:step one, shielding, adhering and perforating liquid domes; digging bolt holes covered when FSB (free space group) in the stainless steel corner area of the liquid dome are adhered;confirming the bolt hole state, and checking the screw tooth state of the bolt hole;step three, determining the adhesion size according to the size of the angle steel, and drawing an adhesion area line at the position of the outer edge of each edge of the angle steel by using a pencil;fourthly, pasting an adhesive tape on the periphery of the line of the adhesion area;fifthly, slightly adjusting the angle of the steel part to enable the angle of the steel part to be matched with the angle of the stainless steel angle area of the liquid dome;cleaning the adhesion surface;coating glue on the angle steel piece and installing the angle steel piece, applying pressure on the angle steel piece to extrude the glue, and fixing the angle steel piece by using a bolt and a nut;step eight, after the glue is hardened, carrying out surface treatment, tearing off the adhesive tape, and removing the redundant glue in the stainless steel corner area of the liquid dome;and step nine, spot welding the nut with the angle steel piece after torsion.
- 2. The method of installing liquid dome angle steel member of MARK3 type liquid cargo tank containment system of claim 1, wherein in the first step, the FSB cut-out at the bolt opening position is rounded.
- 3. The method for installing liquid dome angle steel member of MARK3 type liquid cargo tank containment system of claim 1, wherein in the second step, if the thread is damaged, the tapping is performed again.
- 4. The method for installing the liquid dome angle steel member of the MARK3 type liquid cargo tank containment system according to claim 1, wherein in the third step, after the angle steel is bonded, 100% of edge glue overflow is needed, and the bonding area line exceeds the edge of the angle steel by 5-8 mm.
- 5. The method for installing liquid dome angle steel of MARK3 type liquid cargo tank containment system of claim 1, wherein in the sixth step, a dust collector is used to clean the adhesion area in cooperation with a brush head.
- 6. The method for installing liquid dome angle steel member of MARK3 type liquid cargo compartment containment system of claim 1, wherein in the seventh step, the gap between the bolt and the glue is 1 mm.
- 7. The method for installing liquid dome angle steel member of MARK3 type liquid cargo tank containment system of claim 1, wherein in the eighth step, the glue is hardened at room temperature for 24 hours.
- 8. The method for installing liquid dome angle steel member of MARK3 type liquid cargo tank containment system according to claim 1, wherein in the ninth step, the torque value applied to the nut is 3-5N/m, the spot welding is wire spot welding, and the spot welding is between the nut and the angle steel member and between the nut and the bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311884.9A CN113978651A (en) | 2021-11-08 | 2021-11-08 | Method for installing liquid dome angle steel piece of MARK3 type liquid cargo tank containment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111311884.9A CN113978651A (en) | 2021-11-08 | 2021-11-08 | Method for installing liquid dome angle steel piece of MARK3 type liquid cargo tank containment system |
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| CN113978651A true CN113978651A (en) | 2022-01-28 |
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| CN202111311884.9A Pending CN113978651A (en) | 2021-11-08 | 2021-11-08 | Method for installing liquid dome angle steel piece of MARK3 type liquid cargo tank containment system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115026452A (en) * | 2022-05-27 | 2022-09-09 | 沪东中华造船(集团)有限公司 | Welding method for composite dome sealing plate of liquid cargo hold containment system |
| CN115783174A (en) * | 2022-09-22 | 2023-03-14 | 沪东中华造船(集团)有限公司 | Method for accurately installing liquid dome bracket in liquid cargo tank of N0.96 containment system |
| CN115854249A (en) * | 2022-11-24 | 2023-03-28 | 沪东中华造船(集团)有限公司 | Method for adhering stainless steel in 173.6-degree angle area of film tank |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115026452A (en) * | 2022-05-27 | 2022-09-09 | 沪东中华造船(集团)有限公司 | Welding method for composite dome sealing plate of liquid cargo hold containment system |
| CN115026452B (en) * | 2022-05-27 | 2024-06-11 | 沪东中华造船(集团)有限公司 | Welding method for composite vault sealing plate of liquid cargo tank containment system |
| CN115783174A (en) * | 2022-09-22 | 2023-03-14 | 沪东中华造船(集团)有限公司 | Method for accurately installing liquid dome bracket in liquid cargo tank of N0.96 containment system |
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| CN115854249A (en) * | 2022-11-24 | 2023-03-28 | 沪东中华造船(集团)有限公司 | Method for adhering stainless steel in 173.6-degree angle area of film tank |
| CN115854249B (en) * | 2022-11-24 | 2024-05-10 | 沪东中华造船(集团)有限公司 | Method for stainless steel adhesion in 173.6-degree angle area of thin film tank |
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