CN2936541Y - Position changing machine for welding gas turbine jet nozzle - Google Patents

Position changing machine for welding gas turbine jet nozzle Download PDF

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Publication number
CN2936541Y
CN2936541Y CN 200620021434 CN200620021434U CN2936541Y CN 2936541 Y CN2936541 Y CN 2936541Y CN 200620021434 CN200620021434 CN 200620021434 CN 200620021434 U CN200620021434 U CN 200620021434U CN 2936541 Y CN2936541 Y CN 2936541Y
Authority
CN
China
Prior art keywords
gear
welding
support arm
crossbeam
motor
Prior art date
Application number
CN 200620021434
Other languages
Chinese (zh)
Inventor
李全华
宫在龙
杨浩
王庆友
刘力田
杨东波
邓伟佳
杜绶
Original Assignee
哈尔滨汽轮机厂有限责任公司
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 哈尔滨汽轮机厂有限责任公司 filed Critical 哈尔滨汽轮机厂有限责任公司
Priority to CN 200620021434 priority Critical patent/CN2936541Y/en
Application granted granted Critical
Publication of CN2936541Y publication Critical patent/CN2936541Y/en

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Abstract

The utility model discloses a positioner for welding steam turbine nozzles, relating to a positioner used for welding. In order to meet requirements of welding quality for steam turbine nozzles, a turnover half-gear (11) of the utility model is fixedly connected with a beam (4); a turnover motor (12) is fixed to a right supporting arm (3) under the turnover half-gear (11); an output gear (12-1) of the turnover motor (12) is meshed with the turnover half-gear (11); the two ends of the beam (4) are connected respectively to a left supporting arm (2) and a right supporting arm (3) via a left supporting axis (5) and a right supporting axis (6); the top end surface of a weighted gear (8) is connected to the bottom end surface of a working platform (7) while the middle of the weighted gear (8) is in rotary connection with the beam (4); the drive output terminal of a revolving motor (10) is connected to the drive input terminal of a reduction gearbox (9), while an output gear (9-1) of the reduction gearbox (9) is meshed with the weighted gear (8) through the beam (4). The utility model is applicable to weld nozzles of subcritical, direct air-cooled and supercritical machines; the utility model can weld two welding cracks simultaneously vacuumized once.

Description

The positioner that is used for the nozzle of steam turbine welding
Technical field
The utility model relates to a kind of welding positioner.
Background technology
Electron beam welding requires very high to workpiece machining accuracy and assembly precision, generally require dimensional tolerance to be ± 0.15mm, and the speed of gyration precision reaches ± and 1%.Nozzle of steam turbine is the critical component of unit, and nozzle box and nozzle sets are the first road thresholds that initial steam enters cylinder, and welding quality requires high, as goes wrong, and will directly have influence on the safe operation of unit.Nozzle workpiece weld seam is the twice concentric semicircles, be shaped as the semicircular type, the workpiece center of gravity is asymmetric with respect to the weld seam centre of gyration, causes very big eccentricity, at present, also there is not a kind of positioner that is used for the nozzle of steam turbine welding that can satisfy the electron beam welding requirement.
The utility model content
For satisfying the requirement of nozzle of steam turbine welding quality, the utility model provides a kind of positioner that is used for the nozzle of steam turbine welding, and it can make position while welding be in level by accurate working platform overturning angle, obtain the weld seam of good moulding, realize the welding of nozzle of steam turbine.The utility model by supporting seat 1, left support arm 2, right support arm 3, crossbeam 4, left back shaft 5, right back shaft 6, workbench 7, lay particular stress on gear 8, reduction box 9, turning motor 10, upset half gear 11 and upset motor 12 and form; The left and right two ends of described crossbeam 4 are rotationally connected by the upper end of left back shaft 5 and right back shaft 6 and left support arm 2 and right support arm 3 respectively, and the lower end of left support arm 2 and right support arm 3 is separately fixed at the and arranged on left and right sides of supporting seat 1; Fixedly connected with the lower surface of workbench 7 in described upper surface of laying particular stress on gear 8 and the middle part of laying particular stress on gear 8 and crossbeam 4 is rotationally connected; Described reduction box 9 and turning motor 10 are separately fixed at the bottom of crossbeam 4, and the power intake of the clutch end of turning motor 10 and reduction box 9 is in transmission connection, and the output gear 9-1 of reduction box 9 passes crossbeam 4 and lays particular stress on gear 8 and be meshed; Half gear 11 that overturns is fixedlyed connected with its right end face of crossbeam 4, and upset motor 12 is fixed on the right support arm 3 of upset half gear 11 belows, and the output gear 12-1 of described upset motor 12 is meshed with upset half gear 11.
The positioner that is used for the nozzle of steam turbine welding described in the utility model need satisfy the condition of vacuum chamber:
1, the lubricant grease on the positioner is non-volatile under vacuum, prevents to influence when vacuumizing suction and pumpdown time;
2, electrical equipment on the positioner and member must adopt radiation proof, explosion-proof component at steady operation under the vacuum;
3, motor is under vacuum, and fan is calm, can not cool off motor, should test, and installs pressure cooling system in case of necessity additional.
That the utility model is used to weld is subcritical, the nozzle welding of Direct Air-Cooled, supercritical unit, can weld two weld seams simultaneously taking out a vacuum, can shorten physical dimension greatly, makes high pressure cylinder structure compactness more, and senior middle school's pressing cylinder is designed to reality.It is convenient and swift to the utlity model has assembling nozzle, the positioning accuracy height, and upset, the accurate advantage in angle of revolution can effectively prevent to lay particular stress on creeping, shaking of causing more greatly, have guaranteed that speed of welding is uniform and stable, have satisfied the welding requirements of nozzle of steam turbine; Simultaneously, it also can be used for the welding of other circular welds.
Description of drawings
Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the vertical view of Fig. 1, and Fig. 3 is the A-A cutaway view of Fig. 1.
The specific embodiment
The specific embodiment one: (referring to the present embodiment of Fig. 1-Fig. 3) by supporting seat 1, left support arm 2, right support arm 3, crossbeam 4, left back shaft 5, right back shaft 6, workbench 7, lay particular stress on gear 8, reduction box 9, turning motor 10, upset half gear 11 and upset motor 12 and form; The left and right two ends of described crossbeam 4 are rotationally connected by the upper end of left back shaft 5 and right back shaft 6 and left support arm 2 and right support arm 3 respectively, and the lower end of left support arm 2 and right support arm 3 is separately fixed at the and arranged on left and right sides of supporting seat 1; Fixedly connected with the lower surface of workbench 7 in described upper surface of laying particular stress on gear 8 and the middle part of laying particular stress on gear 8 and crossbeam 4 is rotationally connected; Described reduction box 9 and turning motor 10 are separately fixed at the bottom of crossbeam 4, and the power intake of the clutch end of turning motor 10 and reduction box 9 is in transmission connection, and the output gear 9-1 of reduction box 9 passes crossbeam 4 and lays particular stress on gear 8 and be meshed; Half gear 11 that overturns is fixedlyed connected with its right end face of crossbeam 4, and upset motor 12 is fixed on the right support arm 3 of upset half gear 11 belows, and the output gear 12-1 of described upset motor 12 is meshed with upset half gear 11.
The specific embodiment two: the difference of (referring to Fig. 1) present embodiment and the specific embodiment one is that described reduction box 9 is planetary reduction gear.Other composition is identical with the specific embodiment one with annexation.Because the gear clearance of planetary reduction gear is very little, velocity control accuracy reaches≤and 0.2%, in turning course, almost there is not return difference, quicken to make the discontinuous phenomenon of weld seam to take place when having avoided the workpiece center of gravity to cross at 0 suddenly.
The utility model at work, the position while welding of nozzle of steam turbine is a level, promptly electronic beam current is a horizontal direction, make molten bath gravity vertical, help the shaping of weld seam, once weld double-faced forming with bead direction, weld again without back root cleaning, can guarantee once to weld success.Welding sequence of the present utility model is as follows:
A, assembling: when the positioner workbench is 0 ° (level), assembling nozzle; Give commentaries on classics center and end jumping≤0.15mm for change;
50 ° of b, positioner upsets; Measuring the rifle distance is 220mm;
C, vacuumize and reach P=4.0~9.0 * 10 -4Mbar, and in welding process, keep;
D, after vacuum arrives predetermined value, with electronic beam current nozzle is welded;
After e, electron beam welding are finished, utilize electronic beam current that nozzle is carried out after-baking, to reduce welding deformation stress and to change the weld metal microstructure to improve its mechanical property;
After the post weld heat treatment, nozzle was isolated in vacuum chamber 15~30 minutes, make its slow cooling;
The nozzle that welded shifted out in the vacuum chamber go to tempering furnace and heat-treat, be to be incubated destressing in 2~4 hours under 680~720 ℃ the condition in temperature, thereby finish electron beam welding nozzle.

Claims (2)

1, the positioner that is used for nozzle of steam turbine welding, it is characterized in that it by supporting seat (1), left support arm (2), right support arm (3), crossbeam (4), left back shaft (5), right back shaft (6), workbench (7), lay particular stress on gear (8), reduction box (9), turning motor (10), upset half gear (11) and the motor (12) that overturns is formed; The left and right two ends of described crossbeam (4) are rotationally connected by the upper end of left back shaft (5) and right back shaft (6) and left support arm (2) and right support arm (3) respectively, and the lower end of left support arm (2) and right support arm (3) is separately fixed at the and arranged on left and right sides of supporting seat (1); Fixedly connected with the lower surface of workbench (7) in described upper surface of laying particular stress on gear (8) and the middle part of laying particular stress on gear (8) and crossbeam (4) is rotationally connected; Described reduction box (9) and turning motor (10) are separately fixed at the bottom of crossbeam (4), the power intake of the clutch end of turning motor (10) and reduction box (9) is in transmission connection, and the output gear (9-1) of reduction box (9) passes crossbeam (4) and lays particular stress on gear (8) and be meshed; Half gear (11) that overturns is fixedlyed connected with its right end face of crossbeam (4), and upset motor (12) is fixed on the right support arm (3) of upset half gear (11) below, and the output gear (12-1) of described upset motor (12) is meshed with upset half gear (11).
2, the positioner that is used for the nozzle of steam turbine welding according to claim 1 is characterized in that described reduction box (9) is a planetary reduction gear.
CN 200620021434 2006-08-11 2006-08-11 Position changing machine for welding gas turbine jet nozzle CN2936541Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620021434 CN2936541Y (en) 2006-08-11 2006-08-11 Position changing machine for welding gas turbine jet nozzle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620021434 CN2936541Y (en) 2006-08-11 2006-08-11 Position changing machine for welding gas turbine jet nozzle

Publications (1)

Publication Number Publication Date
CN2936541Y true CN2936541Y (en) 2007-08-22

Family

ID=38360561

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620021434 CN2936541Y (en) 2006-08-11 2006-08-11 Position changing machine for welding gas turbine jet nozzle

Country Status (1)

Country Link
CN (1) CN2936541Y (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100560284C (en) * 2008-09-12 2009-11-18 齐齐哈尔二机床(集团)有限责任公司 The turnover swivel table device
CN102009312A (en) * 2010-05-31 2011-04-13 无锡恒富科技有限公司 Dumping mechanism of welding positioner
CN101579794B (en) * 2009-06-24 2012-05-30 合肥明双机械科技有限公司 Displacement device
CN101648327B (en) * 2009-09-09 2012-07-04 中外合资沃得重工(中国)有限公司 Tri-axial positioning machine for welding loading shovel
CN102837150A (en) * 2012-08-09 2012-12-26 青岛云和机械制造有限公司 Welding positioner
CN103358081A (en) * 2013-07-12 2013-10-23 苏州澳冠自动化设备有限公司 Swing arm bi-rotation robot welding device
CN103358080A (en) * 2013-07-12 2013-10-23 苏州澳冠自动化设备有限公司 Robot welding device
CN103406704A (en) * 2013-07-12 2013-11-27 苏州澳冠自动化设备有限公司 Shifter structure
CN104722984A (en) * 2015-02-06 2015-06-24 中国运载火箭技术研究院 Longitudinal seam welding device for 5 M-class storage-box bottom
CN105436905A (en) * 2015-12-30 2016-03-30 天津航天长征火箭制造有限公司 Equipment for additionally mounting bottom flange plate of ellipsoidal storage box
CN106078631A (en) * 2016-07-14 2016-11-09 株洲中航动科南方燃气轮机成套制造安装有限公司 Assembly fixture
CN106425253A (en) * 2016-08-31 2017-02-22 浙江通兴铁塔有限公司 Iron tower positioning table
CN106425283A (en) * 2016-11-30 2017-02-22 哈尔滨理工大学 Turbine rotor rotation work platform

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100560284C (en) * 2008-09-12 2009-11-18 齐齐哈尔二机床(集团)有限责任公司 The turnover swivel table device
CN101579794B (en) * 2009-06-24 2012-05-30 合肥明双机械科技有限公司 Displacement device
CN101648327B (en) * 2009-09-09 2012-07-04 中外合资沃得重工(中国)有限公司 Tri-axial positioning machine for welding loading shovel
CN102009312A (en) * 2010-05-31 2011-04-13 无锡恒富科技有限公司 Dumping mechanism of welding positioner
CN102837150A (en) * 2012-08-09 2012-12-26 青岛云和机械制造有限公司 Welding positioner
CN103358081A (en) * 2013-07-12 2013-10-23 苏州澳冠自动化设备有限公司 Swing arm bi-rotation robot welding device
CN103358080A (en) * 2013-07-12 2013-10-23 苏州澳冠自动化设备有限公司 Robot welding device
CN103406704A (en) * 2013-07-12 2013-11-27 苏州澳冠自动化设备有限公司 Shifter structure
CN104722984A (en) * 2015-02-06 2015-06-24 中国运载火箭技术研究院 Longitudinal seam welding device for 5 M-class storage-box bottom
CN105436905A (en) * 2015-12-30 2016-03-30 天津航天长征火箭制造有限公司 Equipment for additionally mounting bottom flange plate of ellipsoidal storage box
CN106078631A (en) * 2016-07-14 2016-11-09 株洲中航动科南方燃气轮机成套制造安装有限公司 Assembly fixture
CN106078631B (en) * 2016-07-14 2018-10-26 株洲中航动科南方燃气轮机成套制造安装有限公司 Assembly fixture
CN106425253A (en) * 2016-08-31 2017-02-22 浙江通兴铁塔有限公司 Iron tower positioning table
CN106425283A (en) * 2016-11-30 2017-02-22 哈尔滨理工大学 Turbine rotor rotation work platform

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C14 Grant of patent or utility model
GR01 Patent grant
EXPY Termination of patent right or utility model
CX01 Expiry of patent term

Granted publication date: 20070822