CN205684900U - Pipeline runs through the friction stitch welding of defect repairs structure - Google Patents
Pipeline runs through the friction stitch welding of defect repairs structure Download PDFInfo
- Publication number
- CN205684900U CN205684900U CN201620615081.0U CN201620615081U CN205684900U CN 205684900 U CN205684900 U CN 205684900U CN 201620615081 U CN201620615081 U CN 201620615081U CN 205684900 U CN205684900 U CN 205684900U
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- China
- Prior art keywords
- blind hole
- defect
- pipeline
- lapping plate
- stitch welding
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Abstract
The open pipeline of this utility model runs through the friction stitch welding of defect repairs structure, pipe wall crack arranges the lapping plate concentric with pipeline, four edges along lapping plate sets gradually blind hole, described blind hole runs through lapping plate, and go deep into tube wall, the most adjacent blind hole laps one another, and is fixedly installed stopper in blind hole.Compared with prior art, the method repairing defect compared to conventional friction stitch welding, this utility model is around the punching of lapping plate surrounding, thus avoid and directly punch at fault location, and after having welded, running through the overlapped plate of defect to cover all, be achieved that the reparation running through defect, the most just overcoming conventional friction stitch welding renovation method can not be to running through this deficiency of defect mending.
Description
Technical field
This utility model belongs to defect of pipeline recovery technique field, more particularly, relates to a kind of submarine pipeline defect
Solid-State Welding repair structure, particularly to the UNDERWATER REPAIR WELDING FOR structure running through defect based on friction stitch welding pipeline.
Background technology
Along with continually developing of marine resources, sea bottom steel iron construction is on the increase, particularly the submarine pipeline of deep water.Due to
Traditional welding method is limited by the depth of water, thus creates friction stitch welding technology.Friction stitch welding (Friction Stitch
Welding, FSW) belong to the one of Friction welding technique, it is that the utility models stirring in about 1991 that continues of Britain's institute of welding rubs
Wiped the another major contribution in solid phase joining technique field since welding technology, be with ocean platform and submarine pipeline reparation be main
A kind of Solid-phase welding method of purpose.
Feature due to friction stitch welding so that it welds under water and under adverse circumstances, welding has the biggest advantage,
Can be widely applied to ocean platform, submarine pipeline, hull repair etc. numerous under water, the especially reparation of Deep Water Steel structure.Tradition
Fusion welding method repairs underwater steel construction defect, can there is a lot of drawback, such as, poor visibility, and weld seam hydrogen content is high, it is impossible to repair
Deep Water Steel structure etc..And friction stitch welding can be prevented effectively from these drawbacks.Friction stitch welding except have friction welding (FW) some advantages it
Outward, also have the depth of water insensitive, it is easy to accomplish automatization, environmental protection, the advantages such as weldering speed is fast.Friction stitch welding welding process is simple
For be to be filled in the process of pre-drilling blind hole on tube wall with rotating metallic bar (stopper).
At present, application friction stitch welding technology repair submarine pipeline, be typically only applicable to the repairing of non-through defect, this be by
The feature of this technology own is determined, is i.e. got rid of the crack defect on tube wall by the way of drilling blind hole on tube wall, then
Filling blind hole with stopper, the impact of the starting stage welding quality of welding process is very big, and the starting stage is the stopper rotated
The CONTACT WITH FRICTION heat production of bottom surface and blind hole bottom surface, the heat of generation makes material generation Plastic Flow, and then carries out ensuing
Welding process.If but the defect on tube wall is through defect, i.e. crack defect has run through the whole thickness direction of tube wall, for
Repairing defect it is necessary to the hole being drilled in advance on tube wall runs through tube wall, such prebored hole does not just have bottom surface, just cannot realize filling in
Rod bottom surface and the frictional heat of the bottom surface in hole, the most just cannot be carried out welding.
Utility model content
This utility model overcomes shortcoming of the prior art, it is provided that a kind of pipeline runs through the friction stitch welding reparation knot of defect
Structure, it is intended to disclosure satisfy that the requirement of underwater construction condition, realizes running through pipeline the reparation of defect conveniently and efficiently, again can simultaneously
The technological parameter of enough existing friction stitch weldings of less adjustment.
In order to solve above-mentioned technical problem, this utility model is achieved through the following technical solutions:
A kind of pipeline runs through the friction stitch welding of defect repairs structure, arranges the overlap joint concentric with pipeline on pipe wall crack
Plate, the four edges along lapping plate sets gradually blind hole, and described blind hole runs through lapping plate, and gos deep into tube wall, the most adjacent blind hole
Lap one another, in blind hole, be fixedly installed stopper.
Wherein, described lapping plate is completely covered pipe wall crack, makes crack be positioned at the centre position of lapping plate.
The generally cylindricality of wherein said stopper.
Wherein on the surface of lapping plate, lap one another between the most adjacent described blind hole, the faying surface of two blind holes
Amass the 1/5-1/4 for blind hole area.
Wherein blind hole gos deep into the degree of depth is pipe thickness 1st/1 to two/3rds of tube wall.
Wherein the geomery of blind hole and stopper matches.
The UNDERWATER REPAIR WELDING FOR method of defect is run through: carry out according to the following step based on friction stitch welding pipeline:
Step 1: what the lapping plate concentric with pipeline was positioned over tube wall runs through fault location, makes lapping plate that tube wall is completely covered
Run through fault location；
Step 2: beat blind hole in lapping plate edge, blind hole runs through lapping plate and gos deep into tube wall, inserts one in blind hole
The stopper that diameter than hole footpath is smaller, applies downward axial force on stopper and keeps feed speed, when the consumption of stopper simultaneously
Amount is when reaching preset value, and stopper stops the rotation simultaneously to stopper upset force and maintain；
Step 3: the edge along the four edges of lapping plate repeats to play blind hole operation in step 2, make later blind hole and
Some area of previous blind hole overlaps, until the blind hole being connected is end to end around the surrounding of lapping plate, can realize pipe
Road runs through the friction stitch welding of defect repairs structure.
In technique scheme, in step 2, a diameter of 9-20mm of described blind hole.
In technique scheme, in step 2, described upset force is more than axial force.
Compared with prior art, the beneficial effects of the utility model are: repair the side of defect compared to conventional friction stitch welding
Method, this utility model is around the punching of lapping plate surrounding, thus avoids and directly punch at fault location, and welded
After, run through the overlapped plate of defect and cover all, be achieved that the reparation running through defect, the most just overcome conventional friction stitch welding
Restorative procedure can not this be not enough to running through defect mending.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is stopper structural representation.
Fig. 3 is stopper and lapping plate junction partial schematic diagram.
Fig. 4 is welding partial structurtes schematic diagram.
Fig. 5 is the curve measuring hardness in embodiment.
Wherein 1 is tube wall, and 2 is lapping plate, and 3 is blind hole, and 4 is stopper, and 5 is weld seam, and 6 is heat affected area, and 7 is interior overlap, 8
For outer overlap, a is stopper Upper cylindrical diameter, and b is stopper lower cylindrical diameter, and c is cone post tapering bottom stopper, and d is stopper
Bottom cone post height, e is the radius of transition arc at stopper bottom corners, and f is blind hole tapering, and g is blind in lapping plate plane
Hole round diameter, h is lapping plate thickness, and i is the thickness that stopper stretches into tube wall, and j is the half of blind via bottom corner transition arc
Footpath.
Detailed description of the invention
With specific embodiment, this utility model is described in further detail below in conjunction with the accompanying drawings:
As shown in attached Figure 14, a kind of pipeline run through defect friction stitch welding repair structure, on pipe wall crack arrange with
The lapping plate that pipeline is concentric, the four edges along lapping plate sets gradually blind hole, and described blind hole runs through lapping plate, and gos deep into tube wall,
The most adjacent blind hole laps one another, and is fixedly installed stopper in blind hole.
Wherein, described lapping plate is completely covered pipe wall crack, makes crack be positioned at the centre position of lapping plate.
Wherein, between blind hole overlapping area is hole area 1/4 before and after described.
The UNDERWATER REPAIR WELDING FOR method of defect is run through: carry out according to the following step based on friction stitch welding pipeline:
Step 1: what the lapping plate concentric with pipeline was positioned over tube wall runs through fault location, makes lapping plate that tube wall is completely covered
Run through fault location,
Step 2: beat blind hole in lapping plate edge, blind hole runs through lapping plate and gos deep into tube wall certain distance, in blind hole
Insert the smaller stopper in a diameter than hole footpath, on stopper, apply a downward axial force simultaneously and keep certain feeding
Speed, when the consumption of stopper reaches preset value, stopper stops the rotation simultaneously to one upset force of stopper, and upset force maintains one
Fix time,
Step 3: the edge along the four edges of lapping plate repeats to play blind hole operation in step 2, make later blind hole and
Some area of previous blind hole overlaps, until the blind hole being connected is end to end around the surrounding of lapping plate.
In technique scheme, in step 2, a diameter of 10mm of described blind hole.Employing technique scheme is entered
Row reality test is as follows:
1. tube material
Test steel pipe used is the X65Mo steel pipe that species abundance in Baosteel in Shanghai produces, and the chemical composition of actual test is as shown in the table.
Table 1X65Mo steel pipe chemical composition
2. the shape of stopper and blind hole and size
As shown in Figures 2 and 3, wherein stopper Upper cylindrical diameter a is 20mm for stopper used by test and the shape of blind hole,
Stopper lower cylindrical diameter b is 16mm, and boring post tapering c bottom stopper is 18 °, and boring post height d bottom stopper is 25mm, at the bottom of stopper
The radius e of corner of portion transition arc is 2mm, and blind hole tapering f is 20 °, and the blind hole round diameter g in lapping plate plane is
18mm, lapping plate thickness h is 15mm, and it is 10mm that stopper stretches into the thickness i of tube wall, the radius of blind via bottom corner transition arc
J is 2mm.
3. hardness test
According to Offshore Standard DNV-OS-F101:Metallographic examination and
Hardness testing standard, carries out overlap joint experiment on friction stitch welding welding machine, welds deep 25mm, the blind hole of diameter 18mm,
With the stopper of diameter 16mm, carried out by the hardness that model is 432SVD type automatic turret digital readout Vicker hardness tester Welded Joints
Test.The technological parameter arranged in experiment is as shown in table 2, the experimental test hardness distribution of welding point, bulk strength, overlap joint
The tensile strength of weld seam at face, weld seam impact flexibility at 0 DEG C.
Table 2 cone of friction plug welding welding parameter
As shown in Figure 4, L1 is welding point longitudinal centre line, and L2 is away from upper surface 2mm, and L3 is 2mm bottom welding point,
Hardness number is as shown in Figure 5.The hardness number of mother metal, at about 215HV10, due to strong mechanical agitation, makes axis of a weld
Hardness number fluctuation relatively big, hardness peak occurs in position under center deviation.Observe L2, L3 hardness number to understand, by Weld pipe mill
Increasing to melt run position hardness number, hardness number reduces subsequently always.In high-temperature heat-affected zone, due to temperature at this in welding process
Spend higher, make crystal grain substantially become big, cause hardness number relatively low；Low Temperature Thermal zone of influence crystal grain is less, and hardness number raises.In Figure 5
L2, L3 show as hardness number acutely to be reduced after melt run, raises subsequently.
Above this utility model is described in detail, but described content has been only preferred embodiment of the present utility model,
It is not to be regarded as limiting practical range of the present utility model.All impartial changes made according to this utility model application range with
Improve, within all should still belonging to patent covering scope of the present utility model.
Claims (6)
1. a pipeline runs through the friction stitch welding of defect and repairs structure, it is characterised in that arrange on pipe wall crack with pipeline with
The lapping plate of the heart, the four edges along lapping plate sets gradually blind hole, and described blind hole runs through lapping plate, and gos deep into tube wall, Qian Houxiang
Adjacent blind hole laps one another, and is fixedly installed stopper in blind hole.
A kind of pipeline the most according to claim 1 runs through the friction stitch welding of defect repairs structure, it is characterised in that described
Lapping plate is completely covered pipe wall crack, and crack is positioned at the centre position of lapping plate.
A kind of pipeline the most according to claim 1 runs through the friction stitch welding of defect repairs structure, it is characterised in that described plug
The generally cylindricality of rod.
A kind of pipeline the most according to claim 1 runs through the friction stitch welding of defect repairs structure, it is characterised in that at overlap joint
On the surface of plate, lapping one another between the most adjacent described blind hole, the overlapping area of two blind holes is the 1/5-of blind hole area
1/4。
A kind of pipeline the most according to claim 1 runs through the friction stitch welding of defect repairs structure, it is characterised in that blind hole is deep
Enter the degree of depth is pipe thickness 1st/1 to two/3rds of tube wall.
A kind of pipeline the most according to claim 1 run through defect friction stitch welding repair structure, it is characterised in that blind hole and
The geomery of stopper matches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615081.0U CN205684900U (en) | 2016-06-16 | 2016-06-16 | Pipeline runs through the friction stitch welding of defect repairs structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620615081.0U CN205684900U (en) | 2016-06-16 | 2016-06-16 | Pipeline runs through the friction stitch welding of defect repairs structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205684900U true CN205684900U (en) | 2016-11-16 |
Family
ID=57416511
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620615081.0U Expired - Fee Related CN205684900U (en) | 2016-06-16 | 2016-06-16 | Pipeline runs through the friction stitch welding of defect repairs structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921879A (en) * | 2016-06-16 | 2016-09-07 | 天津大学 | Pipeline through defect underwater welding repairing method and structure based on friction stitch welding |
| CN109048166A (en) * | 2018-09-07 | 2018-12-21 | 浙江东南网架股份有限公司 | The control method of Multicarity steel member assembly positioning device |
| CN110977321A (en) * | 2019-12-17 | 2020-04-10 | 中国航空制造技术研究院 | Side surface contact friction surfacing repair method |
| CN112743191A (en) * | 2020-12-28 | 2021-05-04 | 哈尔滨工程大学烟台研究院 | Underwater arc additive repair method |
-
2016
- 2016-06-16 CN CN201620615081.0U patent/CN205684900U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921879A (en) * | 2016-06-16 | 2016-09-07 | 天津大学 | Pipeline through defect underwater welding repairing method and structure based on friction stitch welding |
| CN109048166A (en) * | 2018-09-07 | 2018-12-21 | 浙江东南网架股份有限公司 | The control method of Multicarity steel member assembly positioning device |
| CN110977321A (en) * | 2019-12-17 | 2020-04-10 | 中国航空制造技术研究院 | Side surface contact friction surfacing repair method |
| CN112743191A (en) * | 2020-12-28 | 2021-05-04 | 哈尔滨工程大学烟台研究院 | Underwater arc additive repair method |
| CN112743191B (en) * | 2020-12-28 | 2022-10-28 | 哈尔滨工程大学烟台研究院 | Underwater arc additive repair method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161116 Termination date: 20190616 |