CN104846174B - A kind of cylindrical leg weld residual stress cancellation element and method - Google Patents
A kind of cylindrical leg weld residual stress cancellation element and method Download PDFInfo
- Publication number
- CN104846174B CN104846174B CN201510266574.8A CN201510266574A CN104846174B CN 104846174 B CN104846174 B CN 104846174B CN 201510266574 A CN201510266574 A CN 201510266574A CN 104846174 B CN104846174 B CN 104846174B
- Authority
- CN
- China
- Prior art keywords
- cylindrical leg
- leg
- impact head
- weld
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The present invention provides a kind of cylindrical leg weld residual stress cancellation element and method, the device includes base plate, frequency converter, motor, friction pulley and impact head, the motor and the frequency converter are arranged on base plate, the motor is to be symmetrical arranged, the friction pulley is located on the motor, the cylindrical leg is located at friction pulley top, the impact head is symmetricly set on the inwall or outer wall of the cylindrical leg, it it is 90 degree with the face of weld angle of the cylindrical leg, shock point is located at the weld seam both sides.Whole device simple structure, applied widely, the removing method is easy to operate, alleviates the labour intensity of workman, considerably increases operating efficiency, is advantageously implemented automated job.
Description
Technical field
The present invention relates to the manufacturing technology field of marine engineering equipment, more particularly to a kind of offshore wind farm installation ship cylinder
The welding residual stress cancellation element and method of spud leg.
Background technology
Aggravation and the growing tension of wind power plant land resource with energy scarcity situation, offshore wind power generation also turns into works as
The development new direction of this life circle wind power generation.The installation of offshore wind farm unit has higher relative to the installation of land Wind turbines
Technical difficulty, it is necessary to special wind turbine installation vessel undertake transport and installation could complete.When wind turbine installation vessel operation at sea
When, spud leg declines insertion seabed, and wind turbine installation vessel is lifted and sea certain altitude is left, and forms job platform.Therefore, stake
Leg is the critical component of wind turbine installation vessel, carries the safety of whole wind-powered electricity generation mounting platform, and determines the installation of Wind turbines
Precision.
The cylindrical leg cylindrical housings diameter generally 2m~5m of wind turbine installation vessel, thickness of slab be generally 100mm~
200mm, height is generally 50m~70 meter, belongs to the overweight precision equipment part of ultra-large type.The manufacture of cylindrical leg is generally used
The mode of welding is segmented, because cylindrical leg has requirement higher on bulk strength and dimensional accuracy, therefore, it is necessary to right
Welding deformation control effectively, and no side can produce influence to the size of spud leg and profile.And welding stress is to cause spud leg whole
The main cause of body deformation, on the other hand, the fatigue behaviour that welding stress also results in commissure is far below parent metal.Can
See how to reduce or adjust residual stress field, it is significant for improving spud leg bulk strength and dimensional accuracy.
Ultrasonic implement treatment is to eliminate welding residual stress, improve the major measure of welding structure anti-fatigue performance.China
The research institute of weapon industry the five or two discloses a kind of high-efficiency ultrasonic impact head (patent No. eliminated for weld stress：
ZL200810162683.5), using two pieces of symmetrical striker pins while the toe of weld on processing welding lines both sides, significantly improves impact effect
Rate, but the invention is not involved with the elimination to ultra-large type cylindrical leg welding residual stress.
The content of the invention
To overcome cylindrical leg residual stress present in prior art to cause spud leg to deform and eliminate during eliminating
Method is not easy to the problem for operating, the scope of application is small, and the present invention provides a kind of residual for wind turbine installation vessel cylindrical leg weld seam
Residue stress cancellation element and method.
A kind of cylindrical leg weld residual stress cancellation element, it is characterised in that：Including base plate, frequency converter, motor, rub
Wheel and impact head are wiped, the motor and the frequency converter are arranged on the base plate, the motor is to be symmetrical arranged, the friction
Wheel is located on the motor, and the cylindrical leg is located at friction pulley top, and the impact head is symmetricly set on the circle
The inwall or outer wall of cylindricality spud leg, are 90 degree with the face of weld angle of the cylindrical leg, the impact head and the circle
The inwall of cylindricality spud leg or the position of wall contacts are shock point, and the shock point is located at the weld seam both sides.
The cylindrical leg external diametrical extent is 2m~10m.
Motor described in the transducer drive；The motor uses frequency control, drives described friction wheel from rotation, described
The linear velocity of friction pulley continuously adjustabe between 0.5m/min~1.5m/min.
The impact head is ultrasonic impact head.
The friction pulley is 4, and the impact head is 2.
A kind of cylindrical leg weld residual stress removing method, including following steps：
Step one, cylindrical leg prostration to be welded is positioned on friction pulley；
Step 2, startup frequency converter, motor operation drive the friction wheel from rotation, the cylindrical leg is existed
Stable constant speed Rotating with Uniform on the friction pulley；
Step 3, regulation frequency converter, make the linear velocity of periphery of the cylindrical leg in 0.5m/min~1.5m/
Between min；
Step 4, impact head is symmetricly set on the cylindrical leg inwall, adjusts the impact head and the cylinder
The face of weld distance of shape spud leg is 2mm, and in 90 degree of angles；
Step 5, the startup impact head, toe of weld is continuously symmetrically impacted when the cylindrical leg is rotated, and treats described
When cylindrical leg is rotated one week, stop impact and rotate；
Step 6, the impact head is symmetricly set on the cylindrical leg outer wall, adjust the impact head with it is described
The face of weld distance of cylindrical leg is 2mm, and in 90 degree of angles；
Step 7, the impact head is again started up, is welded described in continuous symmetrical Ground shock waves when the cylindrical leg is rotated
Toe, when the cylindrical leg is rotated one week, stops impact and rotates, and completes residual stress and eliminates operation.
The step one includes：The cylindrical leg external diametrical extent is 2m~10m.
The step 2 includes：The motor uses frequency control, is symmetrical arranged, and the friction pulley is 4.
The step 4 includes：The impact head is ultrasonic impact head, and quantity is 2.
Compared with prior art, the beneficial effects of the invention are as follows：It is remaining the invention provides a kind of cylindrical leg weld seam
Stress eliminating device and method, whole device simple structure, impact head is arranged symmetrically, and is conducive to keeping the flat of spud leg internal stress
Weighing apparatus, it is to avoid cause the deformation of spud leg during residual stress is removed.Because wind turbine installation vessel cylindrical leg diameter typically exists
More than 2m, therefore cylindrical leg method for removing residual stress of the invention is quite convenient for operation, it is easy to the work for mitigating workman is strong
Degree, realizes automated job.Additionally, the present invention is by the way of continuous rotation, can fast and accurately to cylindrical leg
The residual stress of weld seam is removed, and considerably increases operating efficiency.
Brief description of the drawings
Fig. 1 is the cancellation element schematic diagram of cylindrical leg weld residual stress；
Fig. 2 is the partial enlarged drawing of shock point (dotted portion) in Fig. 1.
Label in figure：1- spud legs, 2- impact heads, 3- friction pulleys, 4- motors, 5- frequency converters, 6- base plates.
Specific embodiment
Below in conjunction with drawings and Examples, the present invention will be described in further detail.It should be appreciated that described herein
Specific embodiment is only used to explain the present invention, is not intended to limit the present invention.
A kind of cylindrical leg weld residual stress cancellation element, as shown in figure 1, including base plate 6, frequency converter 5, motor 3,
Friction pulley 4 and impact head 2, motor is symmetricly set on base plate, and frequency converter is also disposed on base plate, and friction pulley is located at motor
On, the sleeping top for being put in friction pulley 4 of cylindrical leg 1, two impact heads 2 are symmetricly set on the inwall or outer wall of spud leg 1, this
Sample is conducive to keeping the balance of spud leg internal stress, it is to avoid cause the deformation of spud leg during residual stress is removed.Such as Fig. 2 institutes
Show, the impact head 2 is 90 degree with the face of weld angle of cylindrical leg 1, the inwall or outer of impact head 2 and cylindrical leg 1
The position of wall contact is shock point, and shock point is located at weld seam both sides.Friction pulley 4 is four in device of the invention, is divided into two groups,
Motor 3 uses frequency control, drives friction pulley 4 to rotate, and the linear velocity of friction pulley 4 is connected between 0.5m/min~1.5m/min
It is continuous adjustable.Motor 3 drives by a frequency converter 5, to keep the rotating speed of all friction pulleys 4 consistent, so that spud leg 1 is rubbing
Wipe on wheel 4 smoothly constant speed Rotating with Uniform, by the process for removing the residual stress of cylindrical leg weld seam become quick and precisely and
Uninterruptedly, operating efficiency is improved.
It is the cylindrical leg of 2m~10m, applied widely, simple structure, Neng Gouyou that the device is applied to external diametrical extent
The elimination spud leg weld residual stress of effect.
Preferably, the impact head of the device is high-efficiency ultrasonic impact head.
Because spud leg belongs to overlength super large part, segmental machining is typically taken to weld the manufacturing process closed up again, so one
There are multiple weld seams on spud leg, i.e., device of the invention vertical or horizontal can arrange multiple to adapt to spud leg length and the side of putting
To, and multiple impact heads are symmetricly set on corresponding face of weld segmentation are removed residual stress operation.
Further, king-size cylindrical leg weld residual stress cancellation element can be manufactured, multiple motors is set
With friction pulley on base plate, it is ensured that spud leg at the uniform velocity rotates, and multiple impact heads are symmetricly set on corresponding face of weld, together
When or segmentation the multiple weld seams on cylindrical leg are removed residual stress work.
A kind of cylindrical leg weld residual stress removing method is provided in another embodiment of the present invention, will be treated
The prostration of cylindrical leg 1 of welding is positioned on four friction pulleys 3, starts frequency converter 5, and motor 3 runs, so as to drive institute
There is friction pulley 4 to rotate so that the stable constant speed Rotating with Uniform of spud leg 1.Motor 3 uses frequency control, drives friction pulley 4 to rotate,
To ensure that all rotating speeds of friction pulley 4 are consistent, all motors drive by a frequency converter 5.Continue to adjust frequency converter 5, make stake
Leg 1 rotate when periphery linear velocity between 0.5m/min~1.5m/min, such as 1m/min.By two impact heads 2 pairs
Title is arranged on the inwall of spud leg 1, and adjustment impact head 2 is 2mm with the distance of face of weld, and in 90 degree of angles, starts impact head 2,
Toe of weld is continuously symmetrically impacted when spud leg 1 is rotated, the residual stress to weld seam is eliminated.When spud leg 1 is rotated one week, stop
Only impact and rotate, two impact heads 2 are symmetricly set on the distance of the outer wall of spud leg 1, adjustment impact head 2 and face of weld again
It is 2mm, and in 90 degree of angles, is again started up impact head 2, after spud leg 1 is rotated one week, stop impact and rotate, that is, completes
Whole residual stress eliminates operation.
Preferably, the impact head for being used in the method is high-efficiency ultrasonic impact head.
The method is equally applicable to the cylindrical leg and king-size cylindrical leg weld seam that external diametrical extent is 2m~10m
Residual stress cancellation element, it is easy to operate, the labour intensity of workman is significantly reduced, beneficial to realizing automated job.
A kind of cylindrical leg weld residual stress cancellation element and method that the present invention is provided, by the symmetrical cloth of impact head
Put, be conducive to keeping the balance of spud leg internal stress, it is to avoid cause the deformation of spud leg during residual stress is removed；Also using company
The mode of continuous rotation, residual stress that can be fast and accurately to cylindrical leg weld seam is removed, and considerably increases work
Make efficiency.And wind turbine installation vessel cylindrical leg diameter is general in more than 2m, the scope of application is wide, therefore whole device of the invention
Simple structure, method is easy to operation, significantly reduces the labour intensity of workman, is advantageously implemented automated job.
Described above has shown and described the preferred embodiments of the present invention, as previously described, it should be understood that not office of the invention
Be limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and can be used for various other combinations, modification and
Environment, and can be changed by the technology or knowledge of above-mentioned teaching or association area in invention contemplated scope described herein
It is dynamic.And the change and change that those skilled in the art are carried out do not depart from the spirit and scope of the present invention, then all should be appended by the present invention
In scope of the claims.
Claims (2)
1. a kind of cylindrical leg weld residual stress cancellation element, it is characterised in that：Including base plate, frequency converter, motor, friction
Wheel and impact head, the motor and the frequency converter are arranged on the base plate, and the motor is to be symmetrical arranged, the friction pulley
On the motor, multiple motors and friction pulley are set on base plate, it is ensured that spud leg at the uniform velocity rotates, and by multiple impact heads pair
Title be arranged on corresponding face of weld, while or segmentation residual stress work is removed to the multiple weld seams on cylindrical leg
Make；The cylindrical leg is located at friction pulley top, and the impact head is symmetricly set on the inwall of the cylindrical leg
Or outer wall, it is 90 degree with the face of weld angle of the cylindrical leg, the inwall of the impact head and the cylindrical leg
Or the position of wall contacts is shock point, the shock point is located at the weld seam both sides；Cylindrical leg external diametrical extent be 2m~
10m；Motor described in the transducer drive；The motor uses frequency control, drives described friction wheel from rotation, the friction
The linear velocity of wheel is 1.5m/min；The impact head is ultrasonic impact head.
2. a kind of cylindrical leg weld residual stress removing method, including following steps：
Step one, the cylindrical leg prostration after welding is positioned on friction pulley；
Step 2, startup frequency converter, motor operation drive the friction wheel from rotation, make the cylindrical leg described
Stable constant speed Rotating with Uniform on friction pulley；
Step 3, regulation frequency converter, make the linear velocity of the periphery of the cylindrical leg 0.5m/min~1.5m/min it
Between；
Step 4, impact head is symmetricly set on the cylindrical leg inwall, adjusts the impact head and the cylindrical stake
The face of weld distance of leg is 2mm, and in 90 degree of angles；
Step 5, the startup impact head, toe of weld is continuously symmetrically impacted when the cylindrical leg is rotated, and treats the cylinder
When shape spud leg is rotated one week, stop impact and rotate；
Step 6, the impact head is symmetricly set on the cylindrical leg outer wall, adjusts impact head and the cylindrical stake
The face of weld distance of leg is 2mm, and in 90 degree of angles；
Step 7, the impact head is again started up, toe of weld described in continuous symmetrical Ground shock waves, treats when the cylindrical leg is rotated
When the cylindrical leg is rotated one week, stop impact and rotate, complete residual stress and eliminate operation；
The step one includes：The cylindrical leg external diametrical extent is 2m~10m；
The step 2 includes：The motor uses frequency control, is symmetrical arranged, and the friction pulley is 4；
The step 4 includes：The impact head is ultrasonic impact head, and quantity is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266574.8A CN104846174B (en) | 2015-05-22 | 2015-05-22 | A kind of cylindrical leg weld residual stress cancellation element and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510266574.8A CN104846174B (en) | 2015-05-22 | 2015-05-22 | A kind of cylindrical leg weld residual stress cancellation element and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104846174A CN104846174A (en) | 2015-08-19 |
| CN104846174B true CN104846174B (en) | 2017-07-07 |
Family
ID=53846154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510266574.8A Active CN104846174B (en) | 2015-05-22 | 2015-05-22 | A kind of cylindrical leg weld residual stress cancellation element and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104846174B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108950173B (en) * | 2018-08-10 | 2019-06-21 | 燕山大学 | A kind of device and technique of online induction heating removal straight seam welded pipe residual stress |
| CN110423883B (en) * | 2019-08-08 | 2020-08-04 | 北京航空航天大学 | Rotating centrifugal stress regulation and control method for large ring piece |
| CN116818555B (en) * | 2023-07-25 | 2024-02-02 | 中国航发北京航空材料研究院 | Method for determining pre-rotation speed of nickel-based superalloy wheel disc blank |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6338765B1 (en) * | 1998-09-03 | 2002-01-15 | Uit, L.L.C. | Ultrasonic impact methods for treatment of welded structures |
| CN101648310B (en) * | 2008-08-15 | 2011-09-14 | 中国海洋石油总公司 | Method for welding circular casings with large-thickness casing walls |
| JP5251486B2 (en) * | 2008-12-22 | 2013-07-31 | 新日鐵住金株式会社 | Machining method using ultrasonic impact treatment |
| US9605328B2 (en) * | 2011-07-29 | 2017-03-28 | Progress Rail Services Corporation | Surface contouring of a weld cap and adjacent base metal using ultrasonic impact treatment |
| CN103264356B (en) * | 2013-05-27 | 2015-12-02 | 天津天东恒科技发展有限公司 | A kind of multi-needle impact head for ultrasonic impact gun and method for designing thereof |
| CN203924046U (en) * | 2014-05-13 | 2014-11-05 | 浙江海洋学院 | Shallow sea wind power facility suction pile |
| CN105458483B (en) * | 2014-11-20 | 2017-09-12 | 南通大学 | Postwelding weld joint tracking robot automatic deviation correction and ultrasonic impact system |
-
2015
- 2015-05-22 CN CN201510266574.8A patent/CN104846174B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104846174A (en) | 2015-08-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104846174B (en) | A kind of cylindrical leg weld residual stress cancellation element and method | |
| CN111366637B (en) | Nondestructive testing device and nondestructive testing method for bridge pile foundation | |
| CN105675334A (en) | Portable minimally invasive sampling machine and application thereof | |
| CN112693537A (en) | Nondestructive testing foot type climbing robot platform for wind driven generator blade | |
| CN107486736A (en) | Packaged type bar clamping device and method in a kind of low stress blanking | |
| CN109599015B (en) | Hybrid model experimental device and method for floating offshore wind turbine generator system | |
| CN207858315U (en) | A kind of automatic tension device for end face of flange milling machine | |
| CN105866236A (en) | Bevel gear tooth surface grinding burn automatic detection apparatus and detection method thereof | |
| CN207372461U (en) | A kind of shaking platform for level of ultrasonic vibration electric spark Compound Machining | |
| CN107030284A (en) | A kind of blade impeller selective laser sintering lifting platform | |
| CN201268718Y (en) | Deviation rectifying roller adjusting apparatus | |
| CN206662460U (en) | Soldering mechanism and solder system | |
| CN108223299B (en) | Aerogenerator test platform | |
| CN101850447A (en) | Automatic electrospark deposition processing gun | |
| CN105316739A (en) | Continuous electroplating test device for simulating different linear speeds of strip steel | |
| CN105345615B (en) | A kind of sanding apparatus applied to blade of wind-driven generator end face | |
| CN206779983U (en) | A kind of electric motor end cap production automation fraise jig | |
| CN205237735U (en) | Be applied to grinding device of aerogenerator blade terminal surface | |
| CN208880032U (en) | A kind of Machine Design fixture to cool down | |
| CN207953464U (en) | A kind of steel pipe polishing machine | |
| CN207088226U (en) | A kind of single driving silicon single crystal rod double side cutting machine | |
| CN207231432U (en) | High-grade precision electric chief axis system testing research platform | |
| CN201455467U (en) | Automatic electric spark deposition processing working gun | |
| CN206567693U (en) | A kind of annular cutting device of laser cutting | |
| CN215393010U (en) | Wave soldering device with protective structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 226000 No. 1, COSCO Road, Jiangsu, Nantong Co-patentee after: Jiangsu Institute of Technology Patentee after: Nantong COSCO Shipping Engineering Co., Ltd. Address before: 226006 No. 1, COSCO Road, Jiangsu, Nantong Co-patentee before: Jiangsu Institute of Technology Patentee before: COSCO Shipyard Group Co., Ltd. |
|
| CP03 | Change of name, title or address |