CN208575359U - A kind of offshore drilling platform spud leg rack welding device - Google Patents
A kind of offshore drilling platform spud leg rack welding device Download PDFInfo
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- CN208575359U CN208575359U CN201820403330.9U CN201820403330U CN208575359U CN 208575359 U CN208575359 U CN 208575359U CN 201820403330 U CN201820403330 U CN 201820403330U CN 208575359 U CN208575359 U CN 208575359U
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- spud leg
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Abstract
The utility model relates to welding technology fields, disclose a kind of offshore drilling platform spud leg rack welding device, described device includes, weld seam welding machine and demagnetization welding machine, semi-circular tube is connected on the rack gear, button is equipped with window glass plate on the semi-circular tube, groove is formed between the window glass plate and semi-circular tube, the groove side is placed with conducting magnetic component, the conducting magnetic component is not contacted with spud leg, the weld seam welding machine is used for the gap welding, and the demagnetization welding machine is used for the conducting magnetic component welding, and the weld seam welding machine is opposite with the electric polarity of the demagnetization welding machine.The welder of the utility model can effectively weaken arc blow phenomenon, have the advantages of simple structure and easy realization.
Description
Technical field
The utility model relates to welding technology fields, and in particular to a kind of offshore drilling platform spud leg rack welding device.
Background technique
Steel easily magnetizes in cutting, machining, magnetic handling and welding process, magnetic small weld bond, reluctantly can be with
Welding, but it is magnetic bigger than normal when, the intensity of magnetization is very big when especially large-scale steel pipe component is installed, and in the welding process, can generate magnetic
Blow phenomenon, arc blow are a great problems in weld job, and less serious case, influence electric arc stablizes burning, causes the root of weld
Strip is lack of penetration, and interlayer stomata makes appearance of weld degenerate, severe one, after the starting the arc, welding rod because groove band magnetic be tightly sticked on groove,
Welding arc is in " surrounding injection " shape, and electric arc is unable to normal ignition in groove, cannot form molten bath, the molten drop of fusing from groove to
Outer splashing, directly influences the protection of the metal transfer and liquid metal in welding process, so that the welding for increasing steel pipe lacks
Sunken has occurred, and be normally carried out weld job can not.
Especially at sea in the welding process of drilling platform leg rack gear, rack gear is mutually butted implementation welding, right
After the rack gear being mutually butted implements welding, window glass plate mouth is arranged on the semi-circular tube on rack gear.At this point, the magnetic field after being magnetized
Window glass plate, rack gear and semi-circular tube after being magnetized, magnetic field intersection is complicated, the magnetic biasing in the magnetic field of this intersection complexity
It is more serious to blow phenomenon, welding is more difficult, therefore, for stabilized welding process, changes general quality of weld joint, has been magnetized
The demagnetization of offshore drilling platform spud leg rack gear before welding is particularly important.
Utility model content
The technical problems to be solved in the utility model is that offshore drilling platform spud leg rack gear welds after being magnetized in the prior art
Connect difficulty.In order to solve the above technical problems, the utility model discloses a kind of offshore drilling platform spud leg rack welding device, institute
Stating device includes, weld seam welding machine and demagnetization welding machine, and semi-circular tube is connected on the rack gear, and button is equipped with window on the semi-circular tube
Plate is formed between the window glass plate and semi-circular tube and is had the gap, and the gap side is placed with conducting magnetic component, the conducting magnetic component
It is not contacted with spud leg, the weld seam welding machine is used for the gap welding, and the demagnetization welding machine is for applying the conducting magnetic component
Weldering, the weld seam welding machine are opposite with the electric polarity of the demagnetization welding machine.
Preferably, the conducting magnetic component is steel plate.
Further, the demagnetization welding machine is wrapped in line on the window glass plate and rack gear.
Further, the demagnetization welding machine line is wound follows left hand rule or the right-hand rule.
Further, described device further includes the first power supply and second source, and first power supply and second source are
DC power supply, the weld seam welding machine are connect with first power supply, and the demagnetization welding machine is connect with the second source.
Preferably, the welding current of the demagnetization welding machine it is higher by 20% than the welding current of the weld seam welding machine~
30%.
Preferably, the weld seam welding machine uses straight polarity direct current, the demagnetization welding machine uses DC reverse connection.
Further, be formed with two gaps between the semi-circular tube on the window glass plate and rack gear, including the first gap and
Second gap.
Further, the weld seam welding machine includes the first welding machine and the second welding machine, first welding machine and the second welding machine
Electric polarity is identical.
Further, first welding machine and the second welding are respectively to the first gap and the welding simultaneously of the second gap.
By adopting the above technical scheme, offshore drilling platform spud leg rack welding device described in the utility model has as follows
The utility model has the advantages that
1) offshore drilling platform spud leg rack welding device described in the utility model can be good at what decrease was magnetized
The arc blow phenomenon that offshore drilling platform spud leg rack gear is generated in welding, improves the feasibility of welding；
2) using the weld seam that electric polarity is opposite in offshore drilling platform spud leg rack welding device described in the utility model
Welding and demagnetization welding machine, wherein by weld seam welding machine to gap welding, the welding on steel scrap by demagnetization welding machine, and gap welding
It is carried out simultaneously with steel scrap welding, the magnetic field for generating weld seam welding machine and demagnetization welding machine is on the contrary, real by this reversed polarity demagnetization method
Demagnetization in existing welding process, meanwhile, by line being wrapped on window weldering and rack gear for demagnetization welding machine, by physics demagnetization and
Reasonable arrangement welding sequence weakens arc blow phenomenon.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the welding schematic diagram of offshore drilling platform spud leg rack gear described in the utility model；
Fig. 2 is the structural schematic diagram of offshore drilling platform spud leg rack gear described in the utility model；
In figure, 1- rack gear, 2- semi-circular tube, 3- window glass plate, 4- weld seam welding machine, 5- demagnetization welding machine, the first power supply of 6-, 7- second
Power supply, 8- is line, 9- conducting magnetic component.
Specific embodiment
In order to make those skilled in the art better understand the scheme of the utility model, below in conjunction with the utility model reality
The attached drawing in example is applied, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that described
Embodiment is only the embodiment of the utility model a part, instead of all the embodiments.Based on the reality in the utility model
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts is all answered
When the range for belonging to the utility model protection.
" one embodiment " or " embodiment " referred to herein, which refers to, may be included at least one realization side of the utility model
A particular feature, structure, or characteristic in formula.In the description of the present invention, it should be understood that term " on ", "top",
"bottom", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of description this
Utility model and simplified description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second " are only used
In description purpose, it is not understood to indicate or imply relative importance or implicitly indicates the number of indicated technical characteristic
Amount." first " is defined as a result, the feature of " second " can be expressed or what is implied includes one or more of the features.
Moreover, term " first ", " second " etc. are to be used to distinguish similar objects, without for describing specific sequence or successive time
Sequence.It should be understood that the data used in this way are interchangeable under appropriate circumstances, so as to the implementation of the utility model described herein
Example can be performed in other sequences than those illustrated or described herein.
Embodiment:
In the prior art, steel easily magnetizes in cutting, machining, magnetic handling and welding process, comes for welded bands
Puzzlement will carry out demagnetization, the especially welding of drilling platform leg rack gear at sea to the steel pipe after magnetization before welding
In the process, semi-circular tube 2 is had on the rack gear 1, be located in the window glass plate 3 after completing welding to the rack gear 4 being mutually butted
On semi-circular tube 2 on rack gear, the welding in the gap formed between window glass plate 3 and semi-circular tube 2 is realized.At this point, after being magnetized
Window glass plate 3, rack gear 1 and semi-circular tube 2 of the magnetic field after being magnetized, magnetic field intersection is complicated, in the magnetic of this intersection complexity
Arc blow phenomenon is more serious in, and welding is more difficult, therefore, for stabilized welding process, changes general quality of weld joint, quilt
The demagnetization of the offshore drilling platform spud leg rack gear magnetized before welding is particularly important.For ease of description, in the present embodiment
In, above-mentioned be magnetized is generated the magnetic field of arc blow phenomenon and be denoted as remanent magnetic field.
To solve problems of the prior art, the utility model provides a kind of offshore drilling platform spud leg rack gear weldering
Connection device, specifically, refering to fig. 1 and Fig. 2, described device include: weld seam welding machine 4 and demagnetization welding machine 5, being connected on the rack gear 1
There is semi-circular tube 2, button is equipped with window glass plate 3 on the semi-circular tube 2, is formed and is had the gap between the window glass plate 3 and semi-circular tube 2, described
Gap side is placed with conducting magnetic component 9, and the conducting magnetic component 9 is not contacted with spud leg, and the weld seam welding machine 4 is used for the gap
Welding, the demagnetization welding machine 5 are used for 9 welding of conducting magnetic component, the electrode of the weld seam welding machine 4 and the demagnetization welding machine 5
Property is opposite.Preferably, the weld seam welding machine 4 uses straight polarity direct current, the demagnetization welding machine 5 uses DC reverse connection.
Preferably, the conducting magnetic component 9 is steel plate.
Further, the demagnetization welding machine 5 is wrapped in line 8 on the window glass plate 3 and rack gear 1, to the window glass plate
3,2 physics demagnetization of rack gear 1 and semi-circular tube.The cross-sectional area line 8 is 352Mm~502The flexible welding conducting wire group of mm
At coil.Preferably, the winding line 8 of the demagnetization welding machine 5 follows left hand rule or the right-hand rule.Further
, before the winding demagnetization welding machine 5 is line 8, by means of magnetometer, (magnetometer (Magnetic, M-Sensor) be also ground
Magnetic, magnetic strength device can be used for testing magnetic field strength and direction, and the orientation of positioning device, the principle of magnetometer is with compass principle class
Seemingly, the angle on current device and all directions four direction can be measured.) determine the size and Orientation of remanent magnetic field；Tool
Body, it then follows left hand rule or the right-hand rule are set according to actual conditions, i.e., the direction in the magnetic field generated according to weld seam welding machine 4
Set demagnetization welding machine 58 winding direction of line, to realize that the magnetic field that demagnetization welding machine 5 generates can weaken the generation of weld seam welding machine 4
Magnetic field purpose.
Further, described device further includes the first power supply 6 and second source 7, first power supply 6 and second source 7
It is DC power supply, the weld seam welding machine 4 is connect with first power supply 6, and the demagnetization welding machine 5 connects with the second source 7
It connects.The welding current of the demagnetization welding machine 5 is higher by 20%~30% than the welding current of the weld seam welding machine 4.Preferably,
In the present embodiment, the welding current of the weld seam welding machine 4 is 80~100A.
Further, two gaps, including the first gap are formed between the semi-circular tube 2 on the window glass plate 3 and rack gear 1
With the second gap, the axisymmetrical of first gap and the second gap relative to the semi-circular tube 2.The weld seam welding machine 4 wraps
Include the first welding machine and the second welding machine (a weld seam welding machine is merely illustrated in figure), the electric polarity of first welding machine and the second welding machine
It is identical.Specifically, first welding machine and the second welding are respectively to the first gap and the welding simultaneously of the second gap.
Preferably, above-mentioned weld seam welding machine 4 is understood that when welding to the first gap and the second gap
To implement backing welding to the first gap and the second gap, preferably, in the present embodiment, using carbon-dioxide arc welding reality
Injection back welding, it is to be understood that while the weld seam welding machine 4 carries out backing welding to gap, the demagnetization welding machine 5 exists
Welding on conducting magnetic component 9, by the welding simultaneously of opposite polarity welding machine, the magnetic field for generating the two is on the contrary, this to utilize
Reversed polarity demagnetization method realizes the demagnetization in welding process, meanwhile, pass through line 8 is wrapped in by demagnetization welding machine 5 described above
On window glass plate 3 and rack gear 1, physics demagnetization is realized, and then pass through physics demagnetization and the reversed polarity of reasonable arrangement welding sequence
Demagnetization weakens arc blow phenomenon.
Further, demagnetization welding machine 5 is using the parameter greater than 4 parameter 20%~30% of weld seam welding machine prior to weld seam welding machine 5-
Beginning welding on conducting magnetic component 9 in 10 seconds, weld seam welding machine 4 starts the starting the arc in respective gap after its welding process is stablized
Welding.
Further, when demagnetization welding machine stops welding because of irresistible factor (such as change welding rod, have a power failure), weld seam welding machine
4 should also stop welding at the first time, to demagnetization welding machine again using be greater than 4 parameter 20%~30% of weld seam welding machine parameter prior to
Beginning welding on conducting magnetic component in weld seam welding machine 5-10 seconds, weld seam welding machine 4 starts in respective seam after its welding process is stablized
Starting the arc welding in gap.
Further, after demagnetization terminates, when in order to smoothly reduce magnetic flux, it should electric current is gradually reduced in 1min,
Until zero, then cut off the power.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of offshore drilling platform spud leg rack welding device, which is characterized in that described device includes, weld seam welding machine (4) and
Demagnetization welding machine (5) is connected with semi-circular tube (2) on the rack gear (1), and button is equipped with window glass plate (3) on the semi-circular tube (2), described
It is formed and is had the gap between window glass plate (3) and the semi-circular tube (2) and rack gear (1), the gap side is placed with conducting magnetic component
(9), the conducting magnetic component (9) does not contact with spud leg, and the weld seam welding machine (4) is used for the gap welding, the demagnetization weldering
Machine (5) is used for the conducting magnetic component (9) welding, and the weld seam welding machine (4) is opposite with the electric polarity of the demagnetization welding machine (5).
2. offshore drilling platform spud leg rack welding device according to claim 1, which is characterized in that the conducting magnetic component
It (9) is steel plate.
3. offshore drilling platform spud leg rack welding device according to claim 1, which is characterized in that the demagnetization welding machine
(5) line is wrapped on the window glass plate (3) and rack gear (1).
4. offshore drilling platform spud leg rack welding device according to claim 1 or 3, which is characterized in that the demagnetization
Line winding is followed left hand rule or the right-hand rule by welding machine (5).
5. offshore drilling platform spud leg rack welding device according to claim 1, which is characterized in that described device is also wrapped
The first power supply (6) and second source (7) are included, first power supply (6) and second source (7) are DC power supply, the weld seam
Welding machine (4) is connect with first power supply (6), and the demagnetization welding machine (5) connect with the second source (7).
6. offshore drilling platform spud leg rack welding device according to claim 1 or 5, which is characterized in that the demagnetization
The welding current of welding machine (5) is higher by 20%~30% than the welding current of the weld seam welding machine (4).
7. offshore drilling platform spud leg rack welding device according to claim 4, which is characterized in that the weld seam welding machine
(4) straight polarity direct current is used, the demagnetization welding machine (5) uses DC reverse connection.
8. offshore drilling platform spud leg rack welding device according to claim 1, which is characterized in that the window glass plate
(3) two gaps, including the first gap and the second gap are formed between the semi-circular tube (2) and on rack gear (1).
9. offshore drilling platform spud leg rack welding device according to claim 7, which is characterized in that the weld seam welding machine
It (4) include the first welding machine and the second welding machine, the electric polarity of first welding machine and the second welding machine is identical.
10. offshore drilling platform spud leg rack welding device according to claim 9, which is characterized in that first weldering
Machine and the second welding are respectively to the first gap and the welding simultaneously of the second gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820403330.9U CN208575359U (en) | 2018-03-23 | 2018-03-23 | A kind of offshore drilling platform spud leg rack welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820403330.9U CN208575359U (en) | 2018-03-23 | 2018-03-23 | A kind of offshore drilling platform spud leg rack welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208575359U true CN208575359U (en) | 2019-03-05 |
Family
ID=65503279
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820403330.9U Active CN208575359U (en) | 2018-03-23 | 2018-03-23 | A kind of offshore drilling platform spud leg rack welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208575359U (en) |
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2018
- 2018-03-23 CN CN201820403330.9U patent/CN208575359U/en active Active
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