CN101752927A - Structure of integrally connecting water and electricity of large-scale hydro-cooling steam turbine generator stator coil and welding process method thereof - Google Patents
Structure of integrally connecting water and electricity of large-scale hydro-cooling steam turbine generator stator coil and welding process method thereof Download PDFInfo
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- CN101752927A CN101752927A CN200910073432A CN200910073432A CN101752927A CN 101752927 A CN101752927 A CN 101752927A CN 200910073432 A CN200910073432 A CN 200910073432A CN 200910073432 A CN200910073432 A CN 200910073432A CN 101752927 A CN101752927 A CN 101752927A
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Abstract
The invention relates to a novel end brazing structure of a large-scale steam turbine generator stator coil and a process method. A sleeve connecting structure of a used splitting water box realizes integrated connection of water and electricity of joints with simple structure, and can adjust an error formed in an off-line process in an all-around way. Because the whole joints are brazed by using silver copper, the conductivity ratio and the joint intensity are greatly improved; and inertia gas protection are used in the brazing process to avoid oxidization of the interior of the water box on the end of the coil. The structure and the process method are successfully applied to the production of Taizhou 1000MW steam turbine generators which are biggest in the country to obtain the favorable effect, and the invention also can be popularized and applied to large-capacity units to obtain obvious economic effect.
Description
Technical field: the present invention relates to structure and welding process method thereof that a kind of water and electricity of large-scale hydro-cooling steam turbine generator stator coil one connects.
Background technology: what the upper and lower line rod of the stator of the water-cooled turbogenerator that the 600MW of traditional turbo generator is above adopted is that soldering connects, and the water route is to adopt insulated tube to connect.The levels coil is to connect together by a branch of zinc-plated solid copper wire soldering, and the purpose of doing like this is can be by the shaping of solid strand being adjusted the site error in the coil installation process.The shortcoming of this structural approach is: 1. the intensity of soldering and conductance all hang down 2.In the shaping process, need to adopt knocking to finish, cause damage to coil easily.Adopt the insulation water pipe to form water circuit system in addition, complex structure is installed loaded down with trivial details, and numerous pipeline link positions also leak easily.In the brazing process of water box, do not adopt inert gas shielding,, the potential risk of stopping up hollow-section strand is arranged in the inner oxide skin that forms of water box.This structure is not suitable for the above large turbo-type generator of 1000MW yet.
Summary of the invention: the water and electricity of large-scale hydro-cooling steam turbine generator stator coil integral connecting structure that the purpose of this invention is to provide a kind of easy and simple to handle, good reliability, its technical scheme is: a kind of large-size water-cooling Stator Coil water power integral connecting structure, it is characterized in that: pass through water box and cover pipe connected pipe cover between stator bar, pipe box again with the connected mode of water box, site error after can regulating stator bar and install by sleeve pipe, the water box adopts and divides body structure, and water box bottom has the thick solder layer of 5mm.Adopt sleeve pipe to connect the site error that comprehensively to adjust between stator bar between coil of the present invention, stator coil end adopts water box structure, water flowing simultaneously and energising, the water box is divided into water lid and water box two parts, the strand of stator bar is inserted into water box inside, the hollow-section strand of stator coil is higher than solid strand 10mm, adopt vertical soldering position then, the solder layer that forms 5mm between hollow-section strand end and solid strand end has been realized the sealing of water box bottom, adopt split water box, carry out soldering with the water lid again after water box and the soldering of line rod, can reduce the difficulty of processing of water box like this, and greatly facilitate the soldering of water box and coil, the layer line rod connects by the sleeve pipe of three activities about being convenient to observe.Position of related features between can comprehensive regulating winding.The present invention is applicable to the turbo generator that 1000MW is above, adopts sleeve pipe to connect, and the water power integrative-structure is simple in structure, and can comprehensively regulate the error that forms in the following line process.All joint adopts the silver-bearing copper soldering, and conductance and strength of joint all improve greatly.
1), adopt between coil sleeve pipe to connect the site error that can comprehensively adjust between stator bar another object of the present invention provides a kind of process for soldering that provides a kind of water and electricity of large-scale hydro-cooling steam turbine generator stator coil integral connecting structure, and its technical scheme is:; 2), stator coil end adopts water box structure, water flowing simultaneously and energising, the water box is divided into water lid and water box two parts, the strand of stator bar is inserted into water box inside, the hollow-section strand of stator coil is higher than solid strand 10mm, adopt vertical soldering position then, the solder layer that forms 5mm between hollow-section strand end and solid strand end has been realized the sealing of water box bottom; 3), adopt split water box, carry out soldering with the water lid again after water box and the excellent soldering of line; 4), the layer line rod connects by the sleeve pipe of three activities up and down, the position of related features between comprehensive regulating winding.
With instrument all strands are compacted into square before the soldering welding of water box of the present invention and coil, neat that tubular wire and solid wire is neat according to the sequence arrangement of drawing according to the figure paper size the strand saw, for preventing that solder stops up tubular wire in the brazing process, with pliers solid wire is cut short and to be made tubular wire exceed solid wire 14mm, strand is fixed and is inserted in the water box 1 with instrument.Stator coil is fixed on the workbench perpendicular to ground,, and inductor is placed into soldering position c adds the hot water box by intermediate frequency power supply and inductor and make the solder in the water box form the molten bath at tubular wire placed around silver soldering sheet.The thickness of solder layer 3 is on the solid conductor about 6.5mm～10mm, about insulation 10S.The assembling of water box and sleeve pipe and soldering, mounting bush after the levels coil rolls off the production line, can adjust sleeve pipe this moment according to the physical location of levels coil, after assembling is finished, adopts gas brazing.Overall technology effect of the present invention: it is in order to reduce the difficulty of processing of water box that a water box 1 adopts split water box, and is convenient to observation and filler in water box and the coil brazing process.Connection employing sleeve pipe 4 modes between the b levels water box can realize the site error between comprehensive adjustment two water boxes, and can in sleeve pipe, travel by water, realized the water power integrative-structure, saved loaded down with trivial details independent water route, greatly reduced production cost and improved reliability of products.The brazing process of c water box 1 carries out in the coil upright position, produces the solder molten bath in water box bottom form confining bed after cooling thereby be beneficial to the gravity of solder and the flowability in when fusing.This mode is easy and simple to handle, and reliability is big.D water box 1 from the other end blown inert gas of coil, makes the inner any surface finish non-scale of water box of postwelding in brazing process.A large amount of oxides of having avoided conventional method to produce.Very significant protection effect is played in also logical inert gas shielding in circulation waterway in the gas brazing process of sleeve pipe 4.All joints all adopt the ag-cu solder soldering, have improved the intensity and the conductance of joint greatly.
The present invention successfully applies in the middle of the production of domestic maximum 1000MW turbo generator, obtains good effect, and can promote the use of in the middle of the more jumbo unit remarkable in economical benefits.
Description of drawings:
The structural representation of Fig. 1 water box and coil
Sleeve pipe connection layout between Fig. 2 water box
Embodiment:
A kind of as shown in Figure 1 large-size water-cooling Stator Coil water power integral connecting structure, be connected with sleeve pipe 4 by end water box 1 between stator bar, pipe box 4 is realized what the water power one was connected with water box 1 ways of connecting again, site error after can regulating stator bar and install by sleeve pipe 4, as shown in Figure 2, water box 1 adopts and divides body structure, and water box bottom has the thick solder layer of 5mm 3.
The welding process method of the structure that the water and electricity of large-scale hydro-cooling steam turbine generator stator coil one connects: 1), adopt sleeve pipe 4 to connect the site error that comprehensively to adjust between stator bar between coil; 2), stator coil end adopts water box structure, water flowing simultaneously and energising, the water box is divided into water lid 5 and water box 1 two parts, the strand of stator bar is inserted into water box 1 inside, the hollow-section strand 2 of stator coil is higher than solid strand 10mm, adopt vertical soldering position then, the solder layer 3 that forms 5mm between hollow strand of 2 thread ends and solid strand end has been realized the sealing of water box bottom; 3), adopt split water box, carry out soldering with water lid 5 again after water box 1 and the soldering of line rod; 4), the layer line rod connects the position of related features between comprehensive regulating winding by the sleeve pipe 3 of three activities up and down.
Claims (2)
1. large-size water-cooling Stator Coil water power integral connecting structure, it is characterized in that: pass through water box and cover pipe connected pipe cover between stator bar, pipe box again with the connected mode of water box, site error after can regulating stator bar and install by sleeve pipe, the water box adopts and divides body structure, and water box bottom has the thick solder layer of 5mm.
2. the welding process method of the structure that connects of a water and electricity of large-scale hydro-cooling steam turbine generator stator coil one is characterized in that: 1), adopt sleeve pipe to connect the site error that can comprehensively adjust between stator bar between coil; 2), stator coil end adopts water box structure, water flowing simultaneously and energising, the water box is divided into water lid and water box two parts, the strand of stator bar is inserted into water box inside, the hollow-section strand of stator coil is higher than solid strand 10mm, adopt vertical soldering position then, the solder layer that forms 5mm between hollow-section strand end and solid strand end has been realized the sealing of water box bottom; 3), adopt split water box, carry out soldering with the water lid again after water box and the excellent soldering of line; 4), the layer line rod connects by the sleeve pipe of three activities up and down, the position of related features between comprehensive regulating winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073432A CN101752927A (en) | 2009-12-17 | 2009-12-17 | Structure of integrally connecting water and electricity of large-scale hydro-cooling steam turbine generator stator coil and welding process method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910073432A CN101752927A (en) | 2009-12-17 | 2009-12-17 | Structure of integrally connecting water and electricity of large-scale hydro-cooling steam turbine generator stator coil and welding process method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101752927A true CN101752927A (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910073432A Pending CN101752927A (en) | 2009-12-17 | 2009-12-17 | Structure of integrally connecting water and electricity of large-scale hydro-cooling steam turbine generator stator coil and welding process method thereof |
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| CN (1) | CN101752927A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9194246B2 (en) | 2011-09-23 | 2015-11-24 | General Electric Company | Steam turbine LP casing cylindrical struts between stages |
| CN106238845A (en) * | 2016-08-18 | 2016-12-21 | 哈尔滨电气动力装备有限公司 | Core main pump motor stator coil end socket resistance brazing technology and equipment thereof |
| CN113145963A (en) * | 2021-06-08 | 2021-07-23 | 广西易德科技有限责任公司 | Water nozzle welding method for water chamber of water-cooled radiator |
-
2009
- 2009-12-17 CN CN200910073432A patent/CN101752927A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9194246B2 (en) | 2011-09-23 | 2015-11-24 | General Electric Company | Steam turbine LP casing cylindrical struts between stages |
| CN106238845A (en) * | 2016-08-18 | 2016-12-21 | 哈尔滨电气动力装备有限公司 | Core main pump motor stator coil end socket resistance brazing technology and equipment thereof |
| CN113145963A (en) * | 2021-06-08 | 2021-07-23 | 广西易德科技有限责任公司 | Water nozzle welding method for water chamber of water-cooled radiator |
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Open date: 20100623 |