CN201099854Y - Leg welding structure main shipboard tube - Google Patents
Leg welding structure main shipboard tube Download PDFInfo
- Publication number
- CN201099854Y CN201099854Y CNU2007200154857U CN200720015485U CN201099854Y CN 201099854 Y CN201099854 Y CN 201099854Y CN U2007200154857 U CNU2007200154857 U CN U2007200154857U CN 200720015485 U CN200720015485 U CN 200720015485U CN 201099854 Y CN201099854 Y CN 201099854Y
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- plate
- semi
- rack
- circular plate
- main shipboard
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Abstract
The utility model discloses a main shipboard pipe of a wielding structure in a pile, which comprises a plurality of connection segments formed by semicircular plates and rack plates, wherein each connection segment comprises the rack plate (1) disposed in the middle and the semicircular plates (2) located at the bilateral sides of the rack plate (1), wherein the semicircular plates (2) are disposed oppositely. In each connection segment, the semicircular plates (1) are located at the middle portion of the rack plate (1) and are shorter than the rack plate (1). When the rack plates of two connection segments are in abutting joint with each other, and semicircular plates (2') for filling are wielded and filled between the semicircular plates (2) of two connection segments by a joint of a single-edge 'V'-shape divided edge. The main shipboard pipe of the structure of the utility model increases the reachability of wielding construction, reduces the welding line deficiency, reduces the wielding work load, increases the work efficiency and improves the mechanical property of the wielded joint. According to the qualification test of the wielded technique, each index of the mechanical property of the wielded joint satisfies the rules of the classification society.
Description
Technical field
The utility model relates to the trussed construction in a kind of large-scale self-elevating drilling platform, more particularly, relates to the structure of spud leg part.
Background technology
Large-scale jack-up unit is mainly used in the exploration and the exploitation of offshore oil/natural gas resource, generally is about 70 meters, wide 76 meters, and dark about 9.5 meters, 1.7 ten thousand tons of construction weights, 122 meters of average operating water depths.Main platform body all supports by spud leg, and whether it reliably is related to the safety of whole platform.Spud leg is shaped as the English truss formula, be provided with at the place, three angles of pile leg structure the band tooth bar main shipboard tube, connect by stay tube therebetween.Because the thickness of the local member of main shipboard tube is big, intensity and impact toughness require highly, the welding difficulty is very big, occurs the weld seam shortcoming easily, and it is lower therefore to be difficult to welding thereby welding job efficient.
Summary of the invention
The utility model is used for solving the construction of pile leg structure spreading because the thickness of the local member of main shipboard tube is big, intensity and impact toughness require the high welding difficulty that produces to occur the problem that weld seam lacks, operating efficiency is lower greatly, easily.
At the problems referred to above, the utility model has designed welded main shipboard tube in a kind of spud leg, comprise a plurality of linkage sections that constitute by semi-circular plate and rack-plate, rack-plate that is provided with in the middle of wherein each linkage section comprises and the semi-circular plate that is positioned at the setting of rack-plate bilateral symmetry; Semi-circular plate is positioned at the middle part of rack-plate and lacks than rack-plate in each linkage section; Behind the rack-plate of two linkage sections of butt joint, fill up with semi-circular plate and fill up between the semi-circular plate of two linkage sections with the joint form welding of single bevel groove.
Welded main shipboard tube in the above-mentioned spud leg, it is further characterized in that, the junction of semi-circular plate and rack-plate, the inboard root of semi-circular plate is provided with root face.Semi-circular plate 2 ' is provided with permanent special-purpose homogeneity backing plate with the inner surface of semi-circular plate 2.
By technique scheme, it is as follows that main shipboard tube structure of the present invention has advantage: be convenient to welding procedure, reduced the weld seam shortcoming; Reasonably the bevel for welding form has reduced the welding job amount, increases work efficiency; By the width of strictness control heat affected zone, make it can be not excessive, and remove the heat affected areas that cutting waits formation by mechanical means, can effectively reduce the negative effect of heat affected zone.
Description of drawings
Fig. 1 is two sections perspective view under the spud leg main shipboard tube mated condition;
Fig. 2 is the mated condition structural representation of semi-circular plate in two sections main shipboard tubes among Fig. 1;
Fig. 3 is the schematic cross-section of spud leg main shipboard tube, demonstrates the bevel for welding between semi-circular plate and the rack-plate;
Fig. 4 is the schematic cross-section that docks between two sections rack-plates, demonstrates the butt joint groove of two sections tooth bars;
Fig. 5 is the schematic cross-section that docks between two sections semi-circular plates, demonstrates the divided edge structure of semi-circular plate butt joint in B place among Fig. 2;
Fig. 6 is the enlarged drawing at A place among Fig. 3;
Fig. 7 is the structural representation of semi-circular plate end among Fig. 6, demonstrates the structure of root face;
Fig. 8 is the structural representation of two sections rack-plate welding points;
Fig. 9 is the schematic cross-section of spud leg main shipboard tube.
The specific embodiment
The pile leg structure that the utility model relates to is mainly used in the self-elevating drilling platform of 400 feet depth of waters.The structure of its main shipboard tube comprises semi-circular plate 2 and rack-plate 1 as shown in Figure 9.With reference to shown in Figure 1, main shipboard tube is formed by connecting by a plurality of linkage sections, rack-plate 1 that is provided with in the middle of wherein each linkage section comprises and the semi-circular plate 2 that is positioned at the setting of rack-plate 1 bilateral symmetry.Semi-circular plate 2 is positioned at the middle part and more described rack-plate 1 weak point of rack-plate 1 in each linkage section; Behind the rack-plate of two linkage sections of butt joint, fill up with semi-circular plate 2 ' and fill up between the semi-circular plate 2 of two linkage sections with the joint form welding of single bevel groove.In the junction of semi-circular plate and rack-plate, the inboard root of semi-circular plate is provided with root face 11.Semi-circular plate 2 ' is provided with permanent special-purpose homogeneity backing plate 15 with the inner surface of semi-circular plate 2; Its method to set up is, fills up with semi-circular plate 2 ' before in welding, backing plate 15 is provided with and is weldingly fixed on assigned address, after this welds semi-circular plate 2 '.
With reference to Fig. 2-8, the welding method of main shipboard tube structure is described, comprise the steps:
A, both sides semi-circular plate 2 and the joint form of rack-plate 1 with monolateral U-shaped groove are welded as a whole, and semi-circular plate 2 is positioned at the middle part of rack-plate 1 and short than rack-plate 1; Wherein, at the weld of semi-circular plate 2 with rack-plate 1, the root of semi-circular plate 2 is provided with root face 11 (as shown in Figure 7).
Joint form with the asymmetric X groove welds the rack-plate 1 of b, two linkage sections in the end;
C, will fill up with semi-circular plate 2 ' and fill up between the semi-circular plate 2 of two linkage sections with the welding of the joint form of single bevel groove; Wherein, referring to Fig. 2 and Fig. 5, the weld between semi-circular plate 2 ' and the semi-circular plate 2 is provided with permanent special-purpose homogeneity backing plate 15 at the two inner surface.Fig. 5 represents to dissect the opposite joining relation between two place's semi-circular plates 2 and 2 ' afterwards along semi-circular plate among Fig. 2 vertical (length direction).
The concrete above-mentioned steps of implementing, referring to shown in Figure 3, semi-circular plate 2 and rack-plate 1 with monolateral U-shaped groove type, indicate referring to Fig. 7 middle finger lead-in wire
Part, its angle be preferably as among Fig. 3 28 °, semi-circular plate 2 and 6 millimeters of rack-plate 1 distances.Because semi-circular plate 2 roots are provided with root face 11, preferred as shown in Figure 3 36 ° of its inboard angle.Referring to Fig. 4, the butt joint between the rack-plate is the asymmetric X groove, among the preferred Fig. 4 of angle 5 ° and 30 °; Fig. 8 has shown another kind of butt joint X cut, and angle is 15 ° and 30 °, and demonstrates the corresponding relation of width T, 1/2 width T.Demonstrate 6 millimeters of the distance of butt joint between the semi-circular plate among Fig. 5, and single bevel groove, preferred 30 ° of its angle.
Above-mentioned welding method adopts covered-electrode welding; Welding material adopts AWS A5.5 E11018-G type welding rod.Simultaneously, in order to improve the mechanical property of welding point, satisfy between the rack-plate, the welding point between the semi-circular plate, between rack-plate and the semi-circular plate, make yield strength be not less than 690Mpa, tensile strength is not less than 830Mpa ,-37 ℃ of not requirements of Xiao Xu 69J of following impact toughness, process regulation: must be in welding process, the width of strict control heat affected zone guarantees that the heat affected zone is unsuitable excessive, and the part that is influenced by heat of formation such as cutting adopts mechanical means to remove; Rationally selecting welding conditions, suitable sweating heat input, reasonable Arrangement welding bead for use, adopting suitable preheat temperature and other measures to help down, strict control interlayer temperature remains between preheat temperature and 230 ℃ it.
The above; only be the preferable specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.
Claims (3)
1, welded main shipboard tube in a kind of spud leg, it is characterized in that, comprise a plurality of linkage sections that constitute by semi-circular plate (2) and rack-plate (1), described rack-plate (1) that is provided with in the middle of wherein each described linkage section comprises and the described semi-circular plate (2) that is positioned at the setting of described rack-plate (1) bilateral symmetry; The middle part and the more described rack-plate (1) that are positioned at described rack-plate (1) at semi-circular plate described in each linkage section (2) are short; Behind the rack-plate of two linkage sections of butt joint, fill up with semi-circular plate (2 ') and fill up between the semi-circular plate (2) of two linkage sections with the joint form welding of single bevel groove.
2, welded main shipboard tube in the spud leg according to claim 1 is characterized in that, the junction of described semi-circular plate (2) and described rack-plate (1), and the inboard root of described semi-circular plate (2) is provided with root face (11).
3, welded main shipboard tube in the spud leg according to claim 1 and 2 is characterized in that, semi-circular plate (2 ') is provided with permanent special-purpose homogeneity backing plate (15) with the inner surface weld of semi-circular plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200154857U CN201099854Y (en) | 2007-10-22 | 2007-10-22 | Leg welding structure main shipboard tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200154857U CN201099854Y (en) | 2007-10-22 | 2007-10-22 | Leg welding structure main shipboard tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201099854Y true CN201099854Y (en) | 2008-08-13 |
Family
ID=39936385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200154857U Expired - Lifetime CN201099854Y (en) | 2007-10-22 | 2007-10-22 | Leg welding structure main shipboard tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201099854Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699494A (en) * | 2012-07-04 | 2012-10-03 | 上海振华重工集团(南通)传动机械有限公司 | Overall heating automatic welding process of spud leg main coil of offshore drilling platform and special tool of overall heating automatic welding process |
| CN103624366A (en) * | 2013-11-30 | 2014-03-12 | 招商局重工（江苏）有限公司 | Welding method for 180mm thickness spud leg rack of self-elevating drilling platform |
-
2007
- 2007-10-22 CN CNU2007200154857U patent/CN201099854Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102699494A (en) * | 2012-07-04 | 2012-10-03 | 上海振华重工集团(南通)传动机械有限公司 | Overall heating automatic welding process of spud leg main coil of offshore drilling platform and special tool of overall heating automatic welding process |
| CN102699494B (en) * | 2012-07-04 | 2014-12-10 | 上海振华重工集团(南通)传动机械有限公司 | Overall heating automatic welding process of spud leg main coil of offshore drilling platform and special tool of overall heating automatic welding process |
| CN103624366A (en) * | 2013-11-30 | 2014-03-12 | 招商局重工（江苏）有限公司 | Welding method for 180mm thickness spud leg rack of self-elevating drilling platform |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080813 |