CN202131606U - Foundation of half-speed turbo generator set in nuclear power station - Google Patents
Foundation of half-speed turbo generator set in nuclear power station Download PDFInfo
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- CN202131606U CN202131606U CN201120219975U CN201120219975U CN202131606U CN 202131606 U CN202131606 U CN 202131606U CN 201120219975 U CN201120219975 U CN 201120219975U CN 201120219975 U CN201120219975 U CN 201120219975U CN 202131606 U CN202131606 U CN 202131606U
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- vibration isolation
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Abstract
The utility model relates to a foundation of a half-speed turbo generator set in a nuclear power station, which comprises a base plate (11) and a bedplate (13), wherein a plurality of upright posts (12) for supporting the bedplate (13) are arranged between the base plate (11) and the bedplate (13); a spring vibration isolator (14) is further arranged between each upright post (12) and the bedplate (13); and the spring vibration isolator (14) is distributed on the top end of the upright post (12) or on the bottom end of the bedplate (13). The difference of the work compression amount of the spring vibration isolators (14) is smaller than 10% of the rated compression amount. By implementing the foundation of the half-speed turbo generator in the nuclear power station provided by the utility model, resonance of the foundation of the turbo generator set and the machine can be avoided; uneven settlement is solved; and the acceleration response of the turbo generator set can be reduced during earthquake.
Description
Technical field
The utility model relates to a kind of Turbo-generator Set basis, more particularly, relates to a kind of nuclear power station Half Speed Turbo-generator Set basis.
Background technology
Conventional power plant and nuclear power station (working speed 3000rpm, operating frequency 50Hz) Turbo-generator Set basis at full speed generally adopt conventional reinforced concrete frame formula basis.
See also Fig. 2, be the cross-sectional drawing on nuclear power station Turbo-generator Set basis in the prior art.As shown in Figure 2, nuclear power station Turbo-generator Set basis comprises base plate 21, platen 23 in the prior art, is provided with a plurality of columns 22 that support platen 23 between base plate 21 and the platen 23.
For nuclear power station Half Speed Turbo-generator Set (working speed 1500rpm, operating frequency 25Hz), (about 15～25Hz) is more approaching with the operating frequency of Turbo-generator Set, is easy to generate resonance for the vertical fundamental frequency of conventional FRAME FOUNDATION; Under the ground rough sledding, be easy to generate differential settlement, need shut down leveling again and centering, required time produces bigger economic loss thus in a couple of days; The acceleration responsive of geological process lower frame posture basis platen and Turbo-generator Set is bigger, and above situation all is unfavorable for the safety and the stable operation of Half Speed Turbo-generator Set.
At present China adopts the Half Speed unit mostly building nuclear power generating sets, and the mass of nuclear power station is built to Turbo-generator Set basis type selecting and design and brought bigger challenge.Therefore, this area presses for a kind of Turbo-generator Set basis pattern of avoiding Turbo-generator Set basis and machine to resonate, can reduce when solving differential settlement, earthquake the Turbo-generator Set acceleration responsive.
The utility model content
The technical problem that the utility model will solve is; Can't reduce the defective of acceleration responsive to the above-mentioned Turbo-generator Set basis of prior art during with machine resonance, differential settlement, earthquake, a kind of nuclear power station Half Speed Turbo-generator Set basis that can avoid the Turbo-generator Set basis can reduce acceleration responsive with machine resonance and when solving differential settlement, earthquake is provided.
The utility model solves the technical scheme that its technical problem adopted: construct a kind of nuclear power station Half Speed Turbo-generator Set basis; Comprise: base plate, platen; Be provided with a plurality of columns that support said platen between said base plate and the said platen; Also be provided with the spring vibration isolation device between each said column and the said platen, said spring vibration isolation device is arranged in the top of said column or the bottom of said platen.
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, the difference of the work decrement of each said spring vibration isolation device is less than 10% of specified decrement.
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, said spring vibration isolation device work decrement is 70～80% of a specified decrement, and specified decrement is 80% of a limit decrement.
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, the center of rigidity of the said spring vibration isolation device on each column and the center-aligned of corresponding column.
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, be provided with gap between the said spring vibration isolation device as access path.。
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, the top of said spring vibration isolation device also adds pad.
In the described nuclear power station Half Speed of the utility model Turbo-generator Set basis, said column is arranged on the crossbeam of said platen and the infall of longeron, perhaps is arranged to the post limit of said column and aligns with the beam limit of said platen.
Implement the nuclear power station Half Speed Turbo-generator Set basis that the utility model provides, have following beneficial effect:
The resonance of nuclear power station Half Speed Turbo-generator Set basis and steam turbine generator when 1) avoiding moving;
2) reduce the platen on nuclear power station Half Speed Turbo-generator Set basis and the acceleration responsive of steam turbine generator;
3) can carry out leveling and centering fast, produce bigger economic benefit;
4) can reduce the size of nuclear power station Half Speed Turbo-generator Set basis central post, increase lower space, make technology arrangement more flexible.
Description of drawings
To combine accompanying drawing and embodiment that the utility model is described further below, in the accompanying drawing:
Fig. 1 is the cross-sectional drawing on the utility model nuclear power station Half Speed Turbo-generator Set basis;
Fig. 2 is the cross-sectional drawing on nuclear power station Turbo-generator Set basis in the prior art.
The specific embodiment
Understand for technical characterictic, purpose and effect to the utility model have more clearly, contrast the specific embodiment that accompanying drawing specifies the utility model at present.
See also Fig. 1, be the cross-sectional drawing on the utility model nuclear power station Half Speed Turbo-generator Set basis.As shown in Figure 1; The utility model nuclear power station Half Speed Turbo-generator Set basis comprises: base plate 11, platen 13; Be provided with a plurality of columns 12 that support platen 13 between base plate 11 and the platen 13; Also be provided with spring vibration isolation device 14 between each column 12 and the platen 13, spring vibration isolation device 14 is arranged in the top of column 12 or the bottom of platen 13, and the difference of the work decrement of each spring vibration isolation device 14 is less than 10% of specified decrement.
The profile layout of platen 13 each crossbeam and longeron is arranged according to the reference diagram that producer provides; The position combined process of column 12 requires to be arranged in the crossbeam and the longeron infall of platen 13 as far as possible, or aligns with the beam limit of platen 13 in the post limit of column 12; Spring vibration isolation device 14 is arranged in the top of column 12, if owing to the space reason, spring vibration isolation device 14 also can be arranged on the beam.After spring vibration isolation device 14 being arranged in the top of column 12, column 12 breaks away from the power coupling with 13 of base plate 11 and platens, and column 12 is considered the static(al) effect with 11 of base plates, and does not consider the dynamic loading of machine rotation.
The difference of work decrement that satisfies spring vibration isolation device 14 is less than 10% of specified decrement, and the model to spring vibration isolation device 14 just has certain requirement so, and therefore the type selecting to spring vibration isolation device 14 comprises following step:
The 1st step: the model of the spring vibration isolation device 14 that provides according to the producer of spring vibration isolation device 14 is tentatively confirmed the amount of spring compression under the normal operating conditions; This work decrement is 70～80% of a specified decrement generally speaking, and specified decrement is 80% of a limit decrement;
The 2nd step: the vertical rigidity that calculates the needed spring vibration isolation device 14 in top of each column 12 according to the top bearing reaction of each column 12 in the platen model and work decrement;
The 3rd step: select suitable spring vibration isolation device 14 according to the vertical rigidity of the required spring vibration isolation device 14 in the top of each column 12 and the model of spring vibration isolation device 14;
The 4th step: in selected spring vibration isolation device 14 rigidity input block mold, calculate the work decrement of the top spring vibration isolation device 14 of each column 12, the difference of the work decrement of the top spring vibration isolation device 14 of each column 12 generally is no more than 10% of specified decrement.
Wherein, the platen model comprises the crossbeam and the longeron of platen 13 in the 2nd step, and load comprises the deadweight of machinery equipment, pipeline and platen 13, and the support of spring vibration isolation device 14 adopts the border that vertical constraint only is set to replace.
Block mold comprises platen 13, spring vibration isolation device 14 and column 12 in the 4th step, and load comprises the deadweight on machinery equipment, pipeline and whole steam turbine generator basis, and the rigidity of spring vibration isolation device 14 adopts the numerical value of confirming in the 3rd step.
Selected the spring vibration isolation device 14 of suitable model, also need satisfy following requirement the layout of spring vibration isolation device 14:
1) according to the technical data of each spring vibration isolation device 14 of top of column 12 and on the top of column 12 center of rigidity of each spring vibration isolation device 14 of location Calculation, the center of rigidity of the top spring vibration isolation device 14 of each column 12 and the center-aligned of column 14;
2) quantity and appearance and size, column 12 positions according to spring vibration isolation device 14 are optimized layout, guarantee preset clearance between the spring vibration isolation device 14, as access path;
3) because spring vibration isolation device 14 vertical displacements of differential settlement or stressed generation can be passed through under not shutdown situation, the mode that adds pad at the top of spring vibration isolation device 14 solves.
The static and dynamic force analysis on Turbo-generator Set basis: the rigidity that combines selected spring vibration isolation device 14; Self-vibration characteristic and forced vibration analysis, quiet The deformation calculation, earthquake action analysis are carried out in nuclear power station Half Speed Turbo-generator Set basis, to satisfy the requirement of relevant criterion or machine producer.
Through specific embodiment the utility model is further described below.
Certain nuclear power station conventional island 1000MW Turbo-generator Set is the Half Speed unit; Adopt spring vibration isolation Turbo-generator Set basis, spring vibration isolation device 14 is set on the top of column 12, as shown in Figure 1; With spring vibration isolation device 14 is boundary, and this basis is divided into two parts: the spring vibration isolation device is platen 13 more than 14; The structure of spring vibration isolation device below 14 comprises column 12 and base plate 11.
Outline drawing, equipment and the pipe load data of the platen 13 that provides according to steam turbine generator producer adopt finite element software to set up the platen model, and the top of column 12 is set to spring vibration isolation device 14.Through computation optimization repeatedly, be met the vertical rigidity of the spring vibration isolation device 14 that the work decrement requires, and tentatively arrange on the top of column 12.
Because partial spring vibration isolator 14 is arranged on the beam; And beam spring strong point vertical stiffness is less than 10 times of the vertical rigidities of spring vibration isolation device 14; Therefore need to adopt block mold that the work decrement is carried out checking computations, and carry out basic self-vibration characteristic, forced vibration analysis, dynamic stiffness calculating and earthquake analysis.
Through analyzing, the vertical fundamental frequency on this basis is 4.1Hz, and away from the operating frequency 25Hz of steam turbine engine, this basic vibration performance is better, satisfies the requirement of related specifications; Generally in 0.14g, its horizontal movement response has good seismic resistance in 25mm for earthquake input acceleration peak value 0.1g, the acceleration responsive of each bearing point of steam turbine generator.
Implement the nuclear power station Half Speed Turbo-generator Set basis that the utility model provides, can bring following beneficial effect:
1) after the top of column 12 is provided with spring vibration isolation device 14; This basic vertical rigidity reduces; Reduced greatly should the basis vertical fundamental frequency, (2～5Hz) operating frequencies away from steam turbine generator (25Hz) should the basis when effectively avoiding moving and the resonance of steam turbine generator for the vertical fundamental frequency on this basis;
2) reduce level greatly to fundamental frequency, avoid the factory site predominant period, reduce horizontal seismic force, reduce the acceleration responsive of platen 13 and steam turbine generator;
3) owing to spring vibration isolation device 14 vertical displacements of differential settlement or stressed generation, can be under not shutdown situation, the mode that adds pad at spring vibration isolation device 14 tops solves, and can carry out the leveling and the centering of machine thus fast, produces bigger economic benefit;
4) column 12 of spring vibration isolation device below 14 mainly born static load, can reduce column 12 sizes, increases lower space, makes technology arrangement more flexible.
Combine accompanying drawing that the embodiment of the utility model is described above; But the utility model is not limited to the above-mentioned specific embodiment, and the above-mentioned specific embodiment only is schematically, rather than restrictive; Those of ordinary skill in the art is under the enlightenment of the utility model; Not breaking away under the scope situation that the utility model aim and claim protect, also can make a lot of forms, these all belong within the protection of the utility model.
Claims (7)
1. a nuclear power station Half Speed Turbo-generator Set is basic; Comprise: base plate (11), platen (13); Be provided with a plurality of columns (12) that support said platen (13) between said base plate (11) and the said platen (13); It is characterized in that, also be provided with spring vibration isolation device (14) between each said column (12) and the said platen (13), said spring vibration isolation device (14) is arranged in the top of said column (12) or the bottom of said platen (13).
2. nuclear power station Half Speed Turbo-generator Set according to claim 1 basis is characterized in that the difference of the work decrement of each said spring vibration isolation device (14) is less than 10% of specified decrement.
3. nuclear power station Half Speed Turbo-generator Set according to claim 2 basis is characterized in that, said spring vibration isolation device (14) work decrement is 70～80% of a specified decrement, and specified decrement is 80% of a limit decrement.
4. nuclear power station Half Speed Turbo-generator Set according to claim 3 basis is characterized in that the center of rigidity of the said spring vibration isolation device (14) on each column (12) and the center-aligned of corresponding column (12).
5. nuclear power station Half Speed Turbo-generator Set according to claim 4 basis is characterized in that, is provided with the gap as access path between the said spring vibration isolation device (14).
6. nuclear power station Half Speed Turbo-generator Set according to claim 5 basis is characterized in that the top of said spring vibration isolation device (14) also adds pad.
7. according to any described nuclear power station Half Speed Turbo-generator Set basis in the claim 1 to 6; It is characterized in that; Said column (12) is arranged on the crossbeam of said platen (13) and the infall of longeron, perhaps is arranged to the post limit of said column (12) and aligns with the beam limit of said platen (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120219975U CN202131606U (en) | 2011-06-27 | 2011-06-27 | Foundation of half-speed turbo generator set in nuclear power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120219975U CN202131606U (en) | 2011-06-27 | 2011-06-27 | Foundation of half-speed turbo generator set in nuclear power station |
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| CN202131606U true CN202131606U (en) | 2012-02-01 |
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| CN201120219975U Expired - Lifetime CN202131606U (en) | 2011-06-27 | 2011-06-27 | Foundation of half-speed turbo generator set in nuclear power station |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733412A (en) * | 2012-06-29 | 2012-10-17 | 中广核工程有限公司 | Steam turbine generator base and construction method of steam turbine generator base |
| CN103148316A (en) * | 2013-03-21 | 2013-06-12 | 中国电力工程顾问集团华东电力设计院 | Base supporting system of secondary reheating steam turbine generator unit |
| CN105697937A (en) * | 2016-04-28 | 2016-06-22 | 贵州电力设计研究院 | Transforming method for frame-type foundation of steam turbine generator unit |
| CN105908774A (en) * | 2016-04-28 | 2016-08-31 | 贵州电力设计研究院 | 'Less-dismantled' transformation method for steam turbine generator unit frame type foundation |
| CN109295996A (en) * | 2018-11-05 | 2019-02-01 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of combined type steam turbine generator spring foundation |
| CN112443624A (en) * | 2020-11-12 | 2021-03-05 | 江苏核电有限公司 | Method for adjusting elevation of elastic foundation steam turbine generator unit during power operation |
| CN112502185A (en) * | 2020-12-10 | 2021-03-16 | 中冶京诚工程技术有限公司 | Vibration reduction and isolation structure of frame type power foundation |
-
2011
- 2011-06-27 CN CN201120219975U patent/CN202131606U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102733412A (en) * | 2012-06-29 | 2012-10-17 | 中广核工程有限公司 | Steam turbine generator base and construction method of steam turbine generator base |
| CN102733412B (en) * | 2012-06-29 | 2015-12-09 | 中广核工程有限公司 | Turbine generator foundation base and construction method thereof |
| CN103148316A (en) * | 2013-03-21 | 2013-06-12 | 中国电力工程顾问集团华东电力设计院 | Base supporting system of secondary reheating steam turbine generator unit |
| CN103148316B (en) * | 2013-03-21 | 2015-06-17 | 中国电力工程顾问集团华东电力设计院 | Base supporting system of secondary reheating steam turbine generator unit |
| CN105697937A (en) * | 2016-04-28 | 2016-06-22 | 贵州电力设计研究院 | Transforming method for frame-type foundation of steam turbine generator unit |
| CN105908774A (en) * | 2016-04-28 | 2016-08-31 | 贵州电力设计研究院 | 'Less-dismantled' transformation method for steam turbine generator unit frame type foundation |
| CN105697937B (en) * | 2016-04-28 | 2017-10-31 | 贵州电力设计研究院 | A kind of Turbo-generator Set FRAME FOUNDATION remodeling method |
| CN105908774B (en) * | 2016-04-28 | 2018-03-06 | 贵州电力设计研究院 | A kind of " few to remove " Turbo-generator Set FRAME FOUNDATION remodeling method |
| CN109295996A (en) * | 2018-11-05 | 2019-02-01 | 中国电力工程顾问集团西北电力设计院有限公司 | A kind of combined type steam turbine generator spring foundation |
| CN112443624A (en) * | 2020-11-12 | 2021-03-05 | 江苏核电有限公司 | Method for adjusting elevation of elastic foundation steam turbine generator unit during power operation |
| CN112502185A (en) * | 2020-12-10 | 2021-03-16 | 中冶京诚工程技术有限公司 | Vibration reduction and isolation structure of frame type power foundation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee after: CHINA GENERAL NUCLEAR POWER Corp. Patentee after: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. Address before: 518023 No. 69 Shennan Middle Road, Shenzhen, Guangdong, Futian District Co-patentee before: CHINA GUANGDONG NUCLEAR POWER GROUP Co.,Ltd. Patentee before: CHINA NUCLEAR POWER ENGINEERING Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |
|
| CX01 | Expiry of patent term |