CN103464576A - Device and method for liquid-supplementing expansion of retaining ring of turbine generator - Google Patents
Device and method for liquid-supplementing expansion of retaining ring of turbine generator Download PDFInfo
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- CN103464576A CN103464576A CN2013104413916A CN201310441391A CN103464576A CN 103464576 A CN103464576 A CN 103464576A CN 2013104413916 A CN2013104413916 A CN 2013104413916A CN 201310441391 A CN201310441391 A CN 201310441391A CN 103464576 A CN103464576 A CN 103464576A
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Abstract
The invention provides a device and a method for liquid-supplementing expansion of a retaining ring of a turbine generator. The device is provided with a liquid supplementing cylinder, and the liquid supplementing cylinder consists of two parts i.e., a high pressure cylinder and a low pressure cylinder. The device has the advantages that by additionally arranging the high pressure cylinder, the diameter of the lower pressure cylinder is reduced, the sizes of a cylinder body and a bearing framework are obviously reduced, and equipment space and weight are reduced; the high pressure cylinder can be used as one part of passage for super-high pressure liquid, and a force reducing column and the like are completely fixed relative to the liquid supplementing cylinder body, so the structure is greatly simplified, the installation is firm, and the safety and reliability of sealing are improved; the interior of the bearing framework is provided with a main working cylinder with upward transmission capability, the main working cylinder is arranged above a die, and the die is arranged on a movable worktable, so by adopting the arrangement, the operation is convenient, the die replacement is extremely simple, and the disassembly of a super-high pressure pipe joint and a sealing structure of the high pressure cylinder is not needed.
Description
Technical field
The present invention relates to the steam turbine generator technical field, relate in particular to a kind of turbine generator guard ring fluid infusion bulging device and method.
Background technology
Retaining ring is the strength member in steam turbine generator.Once go wrong causing equipment to stop operation, major accident even occur.Retaining ring is arranged on generator amature winding two ends, bear the temperature stress that centrifugal force, the hot charging of self and coil are joined stress and caused by the generator temperature rise during work, the problems such as intensity index is on the low side after forge hot cracking, Retaining Ring Steel bulging, Retaining Ring Steel bulging surplus is large easily occur, the retaining ring that therefore requires in the industry to manufacture has very high yield strength, good plasticity and toughness and little residual stress.
Main wedge expansion method and the hydraulic expanding-forming method of adopting produced retaining ring both at home and abroad at present.But, along with the development of producing and the maximization of generating set, the production of retaining ring faces again many new problems, as former tonnage problem, while taking large-scale hydraulic pressure board, the control problem of shaping etc.In prior art, a kind of turbine generator guard ring outer liquid repairing expansion-shape process unit as shown in Figure 1.It has also adopted the rigidity load-bearing frame 10 of special designs, in order to compensate the sealing thrust of the high compression deformation of retaining ring and solution port, be provided with the hydraulic cylinder 11 of a underdrive in framework 10, place lower prod cast 12 on hydraulic cylinder 11, owing to only with low pressure liquid, promoting plunger 13, so the diameter of cylinder must be done very greatly.Superhigh pressure liquid is directly supplied with by pump, from moving up and down, prod cast 12 sides pass into ring base 15, therefore the super high pressure bend certain distance that should be able to stretch, or pump synchronization lifting up and down, this structural configuration is complicated and not compact, sealing reliability is poor, each necessary super high pressure bend joint 14 of dismounting, mould mounting or dismounting trouble changed.
Therefore, need a kind of new turbine generator guard ring fluid infusion bulging device and method, to avoid above-mentioned defect.
Summary of the invention
The object of the present invention is to provide a kind of turbine generator guard ring fluid infusion bulging device and method, can make apparatus arrangement and mold attaching/detaching convenient, sealing reliability improves.
For addressing the above problem, the present invention proposes a kind of turbine generator guard ring fluid infusion bulging device, comprising:
The load frame of sealing, have entablature and sill;
Main cylinder, its top is fixed on the bottom of load frame entablature, and its bottom is sealing cover body;
Travelling table, be arranged on load frame sill;
Mould, be arranged on travelling table, comprise: container for replenishing liquid, be arranged on container for replenishing liquid and innerly be provided with subtracting the power post and being set in successively face pad, the upper cone that subtracts power post periphery from top to bottom and being arranged on centrum and subtracting the sealing ring between the power post of passage, retaining ring ring embryo is set in subtracting on the power post of described upper centrum below, and described container for replenishing liquid comprises low pressure (LP) cylinder and high pressure cylinder;
Wherein, when described Main cylinder is descending in upper cone and retaining ring ring embryo upper end, retaining ring ring embryo lower end with subtract between the power post and form enclosure space, the channel connection of described enclosure space and the described power of subtracting post.
Further, described turbine generator guard ring fluid infusion bulging device also comprises: base fixes and supports load-bearing frame on the ground.
Further, described mould also comprises hypocentrum, is arranged on the container for replenishing liquid top and is set in the periphery, lower end that subtracts the power post.
Further, described Main cylinder is the Bidirectional mobile piston cylinder, comprises piston cap and is positioned at piston cap top nested piston cylinder, piston cylinder, the piston muscle of ecto-entad; The piston cylinder top is fixed on the bottom of described load frame entablature, and piston cylinder is hollow body, and the piston muscle is arranged on piston cylinder inside for supporting, and the piston cylinder bottom is fixedly connected with described piston cap.
Further, also be provided with guide ring, guide pin bushing, piston packing, combination sealing packing ring between described piston cylinder and piston cylinder.
Further, described piston cylinder top is provided with flange, described flange pack into described load frame entablature bottom and be bolted.
Further, described pad is ball ring.
Further, described low pressure (LP) cylinder is by peripheral hardware low-lift pump feed flow, and described high pressure cylinder is by peripheral hardware high-pressure pump feed flow.
The invention provides a kind of method that above-mentioned turbine generator guard ring fluid infusion bulging device carries out retaining ring fluid infusion bulging of applying, comprising:
The low pressure (LP) cylinder of described container for replenishing liquid and high pressure cylinder all start feed flow;
Described Main cylinder is descending and downward pressure is provided, and described upper centrum, face pad, subtracts power post and retaining ring ring embryo pressurized and makes centrum and retaining ring ring embryo upper end, retaining ring ring embryo lower end and subtract between the power post and form enclosure space;
Highly pressurised liquid in described high pressure cylinder enters described enclosure space by the passage that subtracts power post inside, forms superhigh pressure liquid;
Described retaining ring ring embryo bulging under described superhigh pressure liquid effect, regulate described low pressure (LP) cylinder pressure in Bulging Process and regulate the stressed of described retaining ring ring embryo end, make the embryo homogeneous deformation of retaining ring ring until shape, size reach the predefine shape and size, complete whole retaining ring Bulging Process.
Compared with prior art, turbine generator guard ring fluid infusion bulging device provided by the invention and method, be furnished with container for replenishing liquid, high pressure cylinder, low pressure (LP) cylinder two parts, consists of, set up high pressure cylinder except the diameter that can reduce low pressure (LP) cylinder, cylinder body and load-bearing frame size be can significantly reduce, the device space and weight reduced, can also be as the part passage of superhigh pressure liquid, making to subtract the part relative complement liquid cylinders such as power post is completely fixed, structure is simplified greatly, installed firmly, increased the security reliability of sealing; Be provided with the Main cylinder of a upper driving in load-bearing frame, Main cylinder is arranged on the mould top, and mould is placed on travelling table, and this layout is not only easy to operate, and more mold exchange is very simple, do not relate to super high pressure bend joint and the hermetically-sealed construction of dismantling high pressure cylinder.
The accompanying drawing explanation
Fig. 1 is the structural representation of a kind of turbine generator guard ring outer liquid repairing expansion-shape process unit in prior art;
Fig. 2 A and 2B are front view and the side views of the machine shroud ring external fluid infusion bulging process device of steamer generating of the present invention;
Fig. 3 is the Main cylinder structural representation of the machine shroud ring external fluid infusion bulging process device of steamer generating of the present invention;
Fig. 4 is the mould structure schematic diagram of the machine shroud ring external fluid infusion bulging process device of steamer generating of the present invention.
The specific embodiment
Core concept of the present invention is to disclose a kind of turbine generator guard ring fluid infusion bulging device and method, is furnished with container for replenishing liquid, formed by high pressure cylinder, low pressure (LP) cylinder two parts, set up high pressure cylinder except the diameter that can reduce low pressure (LP) cylinder, can significantly reduce cylinder body and load-bearing frame size, reduce the device space and weight, can also be as the part passage of superhigh pressure liquid, make to subtract the part relative complement liquid cylinder such as power post and be completely fixed, structure is simplified greatly, install firmly, increased the security reliability of sealing; Be provided with the Main cylinder of a upper driving in load-bearing frame, Main cylinder is arranged on the mould top, and mould is placed on travelling table, and this layout is not only easy to operate, and more mold exchange is very simple, do not relate to super high pressure bend joint and the hermetically-sealed construction of dismantling high pressure cylinder.
For purpose of the present invention, feature are become apparent, below in conjunction with accompanying drawing, the specific embodiment of the present invention is further described, yet the present invention can realize by different forms, should not think and just be confined to described embodiment.
Please refer to Fig. 2, the invention provides a kind of turbine generator guard ring fluid infusion bulging device, comprise the compositions such as load-bearing frame 1, Main cylinder 2, mould 3, travelling table 4 and base 5.Load-bearing frame 1 is compoboard frame structure, by plurality of steel plates, with bolt, connects in aggregates, lightweight, easily manufactured, with short production cycle.The top of Main cylinder 2 is fixed on the bottom of load-bearing frame 1 entablature 101, provides and uploads power; Be provided with travelling table 4 on load-bearing frame 1 sill 102, be provided with mould 3 on travelling table 4; Base 5 is used for supporting load-bearing frame 1, and is used for turbine generator guard ring fluid infusion bulging device (retaining ring press) is fixed on ground.
Wherein, guide ring 25; also be support ring; material commonly used is polyformaldehyde (POM); guide ring is part on a kind of piston for hydraulic cylinder or cylinder or piston cylinder or piston rod, support piston or piston cylinder or piston rod movement; it can prevent that piston or piston cylinder or piston rod from occurring directly contact and rub with cylinder body in motion process, plays protection cylinder body and piston or piston cylinder or the not impaired effect of piston rod.Combination sealing packing ring 24 is another kind addresses of combination mat, by rubber ring and the sulfuration of becket integrated bond, formed, and be the sealed circular ring be connected with flange for sealing thread, annulus comprises a becket and a rubber gasket.The antirust processing of becket, rubber ring generally adopts oil resistant butadiene-acrylonitrile glue or fluorubber.The combination sealing packing ring can be divided into A type, Type B according to version; Can be divided into Quan Bao, Ban Bao according to the difference of encapsulate.
Please refer to Fig. 4, described mould by container for replenishing liquid, ball ring 31, upper cone 32, seal 33 and subtract power post 35 etc. and form.Retaining ring ring embryo 34 is set in subtracting on power post 35 of described upper centrum 32 belows, and described container for replenishing liquid 36 comprises low pressure (LP) cylinder and high pressure cylinder, and described low pressure (LP) cylinder is by peripheral hardware low-lift pump feed flow, and described high pressure cylinder is by peripheral hardware high-pressure pump feed flow.
When Main cylinder is descending, by piston cap 29 and ball ring 31, masterpiece is used on upper cone 32, thereby retaining ring ring embryo 34 upper ends are sealed; Simultaneously, under the effect of Main cylinder power 2, will subtract power post 35 and retaining ring ring embryo 34 lower ends seal, upper centrum 32 and retaining ring ring embryo 34 upper ends, retaining ring ring embryo 34 lower ends and subtract between power post 35 and form enclosure space; Highly pressurised liquid in described high pressure cylinder enters described enclosure space by the passage that subtracts power post 35 inside, forms superhigh pressure liquid; When superhigh pressure liquid acts on retaining ring ring embryo 34 inwall, the radial dimension of retaining ring ring embryo 34 is swollen, axial dimension dwindles, regulate described low pressure (LP) cylinder pressure in Bulging Process and regulate the stressed of described retaining ring ring embryo 34 ends, make 34 homogeneous deformations of retaining ring ring embryo, until shape, size reach the predefine shape and size, complete whole retaining ring Bulging Process.
Please refer to Fig. 2 to Fig. 4, the present invention also provides a kind of method that above-mentioned turbine generator guard ring fluid infusion bulging device carries out retaining ring fluid infusion bulging of applying, and comprising:
At first, low pressure (LP) cylinder and the high pressure cylinder of described container for replenishing liquid 36 all start feed flow;
Then, described Main cylinder 2 is descending and downward pressure is provided, and described upper centrum 32, face pad 31, subtracts power post 35 and retaining ring ring embryo 34 pressurizeds and makes centrum 32 and retaining ring ring embryo 34 upper ends, retaining ring ring embryo 34 lower ends and subtract between power post 35 and form enclosure space;
Then, the highly pressurised liquid in described high pressure cylinder enters described enclosure space by the passage that subtracts power post 35 inside, forms superhigh pressure liquid;
Then, described retaining ring ring embryo 35 bulging under described superhigh pressure liquid effect, regulate described low pressure (LP) cylinder pressure in Bulging Process and regulate the stressed of described retaining ring ring embryo 35 ends, make 35 homogeneous deformations of retaining ring ring embryo, until shape, size reach the predefine shape and size, complete whole retaining ring Bulging Process.
As can be seen here, said method is a kind of upper driving retaining ring fluid infusion Bulging Technology, and Main cylinder is the upper driving power source, when Main cylinder is descending, by piston cap 29 and ball ring 31, masterpiece is used on upper cone 32, thereby retaining ring ring embryo 34 upper ends are sealed; Simultaneously, under the effect of Main cylinder power 2, to subtract power post 35 and retaining ring ring embryo 34 lower ends seal, upper centrum 32 and retaining ring ring embryo 34 upper ends, retaining ring ring embryo 34 lower ends and subtract between power post 35 and form enclosure space, sealing superhigh pressure liquid in enclosure space, this superhigh pressure liquid acts on retaining ring ring embryo 34 inwalls to complete whole retaining ring Bulging Process.
In sum, turbine generator guard ring fluid infusion bulging device provided by the invention and method, be furnished with container for replenishing liquid, high pressure cylinder, low pressure (LP) cylinder two parts, consists of, set up high pressure cylinder except the diameter that can reduce low pressure (LP) cylinder, cylinder body and load-bearing frame size be can significantly reduce, the device space and weight reduced, can also be as the part passage of superhigh pressure liquid, making to subtract the part relative complement liquid cylinders such as power post is completely fixed, structure is simplified greatly, installed firmly, increased the security reliability of sealing; Be provided with the Main cylinder of a upper driving in load-bearing frame, Main cylinder is arranged on the mould top, and mould is placed on travelling table, and this layout is not only easy to operate, and more mold exchange is very simple, do not relate to super high pressure bend joint and the hermetically-sealed construction of dismantling high pressure cylinder.The retaining ring that the present invention produces, with the retaining ring that half forge hot method, other method such as piece reaming, common hydraulic expanding-forming method of carving are produced, compare, distortion evenly, the advantages such as residual stress is little, physical performance index is evenly distributed are arranged, the present invention can no longer take large-scale hydraulic press equipment, carry out the retaining ring bulging with load-bearing frame simple in structure, that size is little and container for replenishing liquid place of water press, can significantly subtract power, for producing large retaining-ring, founded a new process.Forming process is easily controlled.Therefore can repeat bulging, greatly improve the retaining ring forming accuracy, than conventional hydraulic expanding-forming method, reduce allowance approximately 1/3rd; And mould structure is simple, easy to loading and unloading.The mould highly versatile, can be used a mold production plurality of specifications retaining ring, and production cost is low.
Obviously, those skilled in the art can carry out various changes and modification and not break away from the spirit and scope of the present invention invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention also is intended to comprise these changes and modification interior.
Claims (9)
1. a turbine generator guard ring fluid infusion bulging device, is characterized in that, comprising:
The load frame of sealing, have entablature and sill;
Main cylinder, its top is fixed on the bottom of load frame entablature, and its bottom is sealing cover body;
Travelling table, be arranged on load frame sill;
Mould, be arranged on travelling table, comprise: container for replenishing liquid, be arranged on container for replenishing liquid and innerly be provided with subtracting the power post and being set in successively face pad, the upper cone that subtracts power post periphery from top to bottom and being arranged on centrum and subtracting the sealing ring between the power post of passage, retaining ring ring embryo is set in subtracting on the power post of described upper centrum below, and described container for replenishing liquid comprises low pressure (LP) cylinder and high pressure cylinder;
Wherein, when described Main cylinder is descending in upper cone and retaining ring ring embryo upper end, retaining ring ring embryo lower end with subtract between the power post and form enclosure space, the channel connection of described enclosure space and the described power of subtracting post.
2. turbine generator guard ring fluid infusion bulging device as claimed in claim 1, is characterized in that, also comprises: base fixes and supports load-bearing frame on the ground.
3. turbine generator guard ring fluid infusion bulging device as claimed in claim 1, is characterized in that, described mould also comprises hypocentrum, is arranged on the container for replenishing liquid top and is set in the periphery, lower end that subtracts the power post.
4. turbine generator guard ring fluid infusion bulging device as claimed in claim 1, is characterized in that, described Main cylinder is the Bidirectional mobile piston cylinder, comprises piston cap and be positioned at piston cap top nested piston cylinder, piston cylinder, the piston muscle of ecto-entad; The piston cylinder top is fixed on the bottom of described load frame entablature, and piston cylinder is hollow body, and the piston muscle is arranged on piston cylinder inside for supporting, and the piston cylinder bottom is fixedly connected with described piston cap.
5. turbine generator guard ring fluid infusion bulging device as claimed in claim 4, is characterized in that, also is provided with guide ring, guide pin bushing, piston packing, combination sealing packing ring between described piston cylinder and piston cylinder.
6. turbine generator guard ring fluid infusion bulging device as claimed in claim 4, is characterized in that, described piston cylinder top is provided with flange, described flange pack into described load frame entablature bottom and be bolted.
7. turbine generator guard ring fluid infusion bulging device as claimed in claim 1, is characterized in that, described pad is ball ring.
8. turbine generator guard ring fluid infusion bulging device as claimed in claim 4, is characterized in that, described low pressure (LP) cylinder is by peripheral hardware low-lift pump feed flow, and described high pressure cylinder is by peripheral hardware high-pressure pump feed flow.
9. an application rights requires 1 described turbine generator guard ring fluid infusion bulging device to carry out the method for retaining ring fluid infusion bulging, it is characterized in that, comprising:
The low pressure (LP) cylinder of described container for replenishing liquid and high pressure cylinder all start feed flow;
Described Main cylinder is descending and downward pressure is provided, and described upper centrum, face pad, subtracts power post and retaining ring ring embryo pressurized and makes centrum and retaining ring ring embryo upper end, retaining ring ring embryo lower end and subtract between the power post and form enclosure space;
Highly pressurised liquid in described high pressure cylinder enters described enclosure space by the passage that subtracts power post inside, forms superhigh pressure liquid;
Described retaining ring ring embryo bulging under described superhigh pressure liquid effect, regulate described low pressure (LP) cylinder pressure in Bulging Process and regulate the stressed of described retaining ring ring embryo end, make the embryo homogeneous deformation of retaining ring ring until shape, size reach the predefine shape and size, complete whole retaining ring Bulging Process.
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| CN2013104413916A CN103464576A (en) | 2013-09-23 | 2013-09-23 | Device and method for liquid-supplementing expansion of retaining ring of turbine generator |
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| CN2013104413916A CN103464576A (en) | 2013-09-23 | 2013-09-23 | Device and method for liquid-supplementing expansion of retaining ring of turbine generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105642745A (en) * | 2014-11-14 | 2016-06-08 | 上海重型机器厂有限公司 | Cold deformation strengthening manufacturing method for retaining ring used for large power station |
| CN106660103A (en) * | 2014-06-19 | 2017-05-10 | 住友重机械工业株式会社 | Molding device, method for replacing molding device components, and replacement unit for molding device |
| CN107052122A (en) * | 2017-03-29 | 2017-08-18 | 佛山市永恒液压机械有限公司 | A kind of hydraulic pressure water swelling forming machine |
| CN108602107A (en) * | 2015-12-23 | 2018-09-28 | 刮拉瓶盖股份公司 | The method for forming closure member |
| CN112935058A (en) * | 2021-01-28 | 2021-06-11 | 江苏圣贤锻造有限责任公司 | Device for producing protective ring in linkage mode and operation method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890819A (en) * | 1972-07-25 | 1975-06-24 | Centro Speriment Metallurg | Apparatus for deforming sheet metal blanks by fluid pressure |
| JPS5744425A (en) * | 1980-08-12 | 1982-03-12 | Kobe Steel Ltd | Cold working method and apparatus of annular material |
| CN1947880A (en) * | 2006-10-31 | 2007-04-18 | 太原科技大学 | Power-saving apparatus for hydraulic expanding large retaining-ring by using super high pressure system |
| CN101367104A (en) * | 2008-10-10 | 2009-02-18 | 沈阳重型机械集团有限责任公司 | Shroud ring external fluid infusion hydraulic pressure expanding and reinforcing process for turbine generator |
| CN202318997U (en) * | 2011-10-21 | 2012-07-11 | 上海重型机器厂有限公司 | Three-beam, four-upright guard ring bulging oil hydraulic press |
-
2013
- 2013-09-23 CN CN2013104413916A patent/CN103464576A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3890819A (en) * | 1972-07-25 | 1975-06-24 | Centro Speriment Metallurg | Apparatus for deforming sheet metal blanks by fluid pressure |
| JPS5744425A (en) * | 1980-08-12 | 1982-03-12 | Kobe Steel Ltd | Cold working method and apparatus of annular material |
| CN1947880A (en) * | 2006-10-31 | 2007-04-18 | 太原科技大学 | Power-saving apparatus for hydraulic expanding large retaining-ring by using super high pressure system |
| CN101367104A (en) * | 2008-10-10 | 2009-02-18 | 沈阳重型机械集团有限责任公司 | Shroud ring external fluid infusion hydraulic pressure expanding and reinforcing process for turbine generator |
| CN202318997U (en) * | 2011-10-21 | 2012-07-11 | 上海重型机器厂有限公司 | Three-beam, four-upright guard ring bulging oil hydraulic press |
Non-Patent Citations (1)
| Title |
|---|
| 马泉山: "《材料工艺与设备》", 30 September 2011, 北京大学出版社 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106660103A (en) * | 2014-06-19 | 2017-05-10 | 住友重机械工业株式会社 | Molding device, method for replacing molding device components, and replacement unit for molding device |
| CN106660103B (en) * | 2014-06-19 | 2018-04-13 | 住友重机械工业株式会社 | Molding machine, molding machine component replacing options and molding machine with replace unit |
| CN105642745A (en) * | 2014-11-14 | 2016-06-08 | 上海重型机器厂有限公司 | Cold deformation strengthening manufacturing method for retaining ring used for large power station |
| CN108602107A (en) * | 2015-12-23 | 2018-09-28 | 刮拉瓶盖股份公司 | The method for forming closure member |
| CN107052122A (en) * | 2017-03-29 | 2017-08-18 | 佛山市永恒液压机械有限公司 | A kind of hydraulic pressure water swelling forming machine |
| CN112935058A (en) * | 2021-01-28 | 2021-06-11 | 江苏圣贤锻造有限责任公司 | Device for producing protective ring in linkage mode and operation method |
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Application publication date: 20131225 |