CN105525598B - Repair method is torn open in large-scale pumped storage power unit - Google Patents
Repair method is torn open in large-scale pumped storage power unit Download PDFInfo
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- CN105525598B CN105525598B CN201610058582.8A CN201610058582A CN105525598B CN 105525598 B CN105525598 B CN 105525598B CN 201610058582 A CN201610058582 A CN 201610058582A CN 105525598 B CN105525598 B CN 105525598B
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- Prior art keywords
- hydraulic synchronization
- top cover
- jacking
- jack
- power unit
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000012423 maintenance Methods 0.000 claims abstract description 13
- 239000000725 suspension Substances 0.000 claims abstract description 6
- 239000004567 concrete Substances 0.000 claims description 10
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 6
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B9/00—Water-power plants; Layout, construction or equipment, methods of, or apparatus for, making same
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses repair method is torn in large-scale pumped storage power unit open, the method is circumferentially to be symmetrically disposed between top cover and base ring in direction two groups of hydraulic synchronization jack, and all of hydraulic synchronization jack is connected with oil pump；Then the two groups of hydraulic synchronization jack of mode loop start for alternately starting carry out jacking, and place cushion block under hydraulic synchronization jack, by top cover jacking to satisfaction maintenance requirement for height；It is then used by screw rod and nut suspends top cover in midair, and stator is sling by stator suspension centre and boom hoisting；Machine hole is finally entered to be overhauled.The present invention can not only shorten the duration, improve security, it is to avoid rotor returns dress, also have the advantages that difficulty of construction is small and the cost of overhaul is low.
Description
Technical field
It is particularly a kind of to shorten the big of duration the present invention relates to tear repair method open in a kind of large-scale pumped storage power unit
Repair method is torn open in type pump-storage generator.
Background technology
Existing large-scale pumped storage power unit typically arranges that its generator motor is located at the upper of pump turbine using vertical shaft
Side, both are connected by big shaft flange；Top cover, runner and stator etc. are respectively mounted as the important composition part of pump turbine
Inside the machine hole of pump turbine.In order to improve the operation stability of unit, needed to water in large pumped storage power plant
Pump turbine is overhauled；General use above tears mode open during maintenance, electricity generation and electromotion machine rotor, the stator that will be mounted above first
With the equipment Removal such as lower bearing bracket and hang out, then top cover point valve is disintegrated, then with bridge machine by top cover, stator etc. one by one to hanging oneself
Go out, finally can just be overhauled.
There is problems with above-mentioned existing repair method：Take-down time during maintenance and the gyration time after maintenance compared with
Long, total maintenance duration needs more than 60 days；The rotor weight of generator motor is heavier（The pump-storage generator of usual 300MW
Rotor weight more than 400 tons）, security during lifting is undesirable；Rotor return dress when, it is necessary to re-start connecting shaft, it is necessary to
Big axle axis and unit throw are controlled, the revolution difficulty after maintenance is higher；Point valve of top cover is dismantled and charge-coupled circle is returned dress to be needed
Completed in pump turbine machine hole, working space is narrow and small, and difficulty of construction is big；The cost of overhaul is higher.Therefore, it is existing large-scale to take out
Torn open in water accumulation of energy unit repair method exist that the duration is more long, security is undesirable, rotor return fill more difficult, difficulty of construction it is larger and
Cost of overhaul problem higher.
The content of the invention
It is an object of the present invention to provide tearing repair method open in a kind of large-scale pumped storage power unit.The present invention can not only
Shorten the duration, improve security, it is to avoid rotor returns dress, also have the advantages that difficulty of construction is small and the cost of overhaul is low.
Technical scheme：Repair method is torn open in large-scale pumped storage power unit, comprise the following steps：
A, two groups of hydraulic synchronization jack are circumferentially symmetrically disposed between top cover and base ring in direction, and by all of liquid
Pressure synchronous jack is connected and debugs with oil pump；
B, startup oil pump, by first group of hydraulic synchronization jack by the steady jacking of top cover, after reaching regulation top lifting height
Stop；
C, under second group of hydraulic synchronization jack cushion block is placed, restarting oil pump makes second group of hydraulic synchronization jack will
The steady jacking of top cover, stops after reaching regulation top lifting height；
D, under first group of hydraulic synchronization jack cushion block is placed, restarting oil pump makes first group of hydraulic synchronization jack will
The steady jacking of top cover, stops after reaching regulation top lifting height；
E, circulating repetition perform step c and step d, and two groups of hydraulic synchronization jack are used alternatingly carries out jacking, until will
Top cover jacking stops to after meeting maintenance requirement for height；
F, using screw rod and nut by top cover Suspending fixation on generator motor infrastructure concrete；
G, stator is sling by stator suspension centre corresponding with gate positing and boom hoisting；
H, by access path into machine cheat overhauled.
In tearing repair method in foregoing large-scale pumped storage power unit open, the regulation top in the step b, step c and step d
Rise is respectively less than the jacking stroke of the hydraulic synchronization jack for carrying out jacking.
Torn open in foregoing large-scale pumped storage power unit in repair method, the jacking in the step b, step c and step d is fast
Degree is respectively less than 20 centimeter per minutes.
Torn open in foregoing large-scale pumped storage power unit in repair method, described screw rod one end is connected with top cover, the other end leads to
Cross sleeve pipe to be connected with generator motor infrastructure concrete, the dismounting and installation of screw rod can be facilitated.
Torn open in foregoing large-scale pumped storage power unit in repair method, the height of the cushion block used in each step is small
The top lifting height of hydraulic synchronization jack in back step.
In tearing repair method in foregoing large-scale pumped storage power unit open, the step f is, using screw rod and nut by top cover
Suspending fixation is on generator motor infrastructure concrete, and setting support frame is supported protection below top cover.
Torn open in foregoing large-scale pumped storage power unit in repair method, the boom hoisting in the step g is chain block,
Convenient operation, reduces operation difficulty.
In tearing repair method in foregoing large-scale pumped storage power unit open, first group of hydraulic synchronization jack and second group
Hydraulic synchronization jack includes the hydraulic synchronization jack of more than 3, and the stress of single hydraulic jack is smaller when making jacking,
Improve the stability and security of jacking.
Compared with prior art, present invention improves over repair method is torn open in large-scale pumped storage power unit, by alternate cycles
Using two groups of symmetrically arranged hydraulic synchronization jack by top cover jacking, the top lifting height of top cover is set to meet maintenance requirement for height,
Then top cover is suspended on generator motor infrastructure concrete by screw rod and nut, and by stator suspension centre and is pulled
Cucurbit slings stator, facilitates maintainer to be overhauled into machine hole, reverse operating when returning dress；Not only eliminate generating
The equipment Removals such as motor rotor, stator and lower bearing bracket, the process for hanging out and returning dress, also eliminate point valve dismounting and the handle of top cover
Charge-coupled circle returns the process of dress；So as to foreshorten to more than 50% the duration, i.e., duration of 60 days original can be needed to shorten 30 days with
On, while security can also be improved, it is to avoid rotor returns dress, reduce difficulty of construction, the cost of overhaul is greatly lowered.Additionally, this hair
It is bright two groups of hydraulic synchronization jack are used alternatingly to carry out jacking, each top lifting height be respectively less than carry out jacking hydraulic synchronization it is very heavy
The jacking stroke on top, and jacking speed is respectively less than 20 centimeter per minutes, so that jacking process is steadily carried out, prevents top cover on top
Inclined during rising, further improve security；Meanwhile, in the height respectively less than back step of the cushion block used in each step
The top lifting height of hydraulic synchronization jack, convenient operation, reduces difficulty of construction；Protection is supported to top cover by support frame,
Further improve security.Therefore, the present invention can not only shorten the duration, improve security, it is to avoid rotor returns dress, also with applying
Work difficulty is small and the low advantage of the cost of overhaul.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is the attachment structure schematic diagram at hydraulic synchronization jack；
Fig. 3 is the attachment structure figure of boom hoisting；
Fig. 4 is the structural representation that the present invention can be when maintenance.
Mark in accompanying drawing for：1- hydraulic synchronization jack, 2- top covers, 3- base rings, 4- cushion blocks, 5- screw rods, 6- generates electricity electric
Motivation, 7- base concretes, 8- stators, 9- stator suspension centres, 10- boom hoistings, 11- access paths.
Specific embodiment
With reference to embodiment, the present invention is further illustrated, but is not intended as the foundation to present invention limitation.
Embodiment.Tear repair method in large-scale pumped storage power unit open, as shown in Figure 1,2,3, 4, comprise the following steps：
A, by two groups of hydraulic synchronization jack 1, circumferentially direction is symmetrically disposed between top cover 2 and base ring 3, and will be all
Hydraulic synchronization jack 1 be connected and debug with oil pump；
B, startup oil pump, by first group of hydraulic synchronization jack 1 by the steady jacking of top cover 2, reach regulation jacking high
Stop after degree；
C, in second group of the placement cushion block 4 of hydraulic synchronization jack 1 time, restarting oil pump makes second group of hydraulic synchronization thousand
Jin top 1 stops the steady jacking of top cover 2 after reaching regulation top lifting height；
D, in first group of the placement cushion block 4 of hydraulic synchronization jack 1 time, restarting oil pump makes first group of hydraulic synchronization thousand
Jin top 1 stops the steady jacking of top cover 2 after reaching regulation top lifting height；
E, circulating repetition perform step c and step d, and two groups of hydraulic synchronization jack 1 are used alternatingly carries out jacking, until will
The jacking of top cover 2 stops to after meeting maintenance requirement for height；
F, using screw rod 5 and nut by the Suspending fixation of top cover 2 on the base concrete 7 of the bottom of generator motor 6；
G, stator 8 is sling by stator suspension centre 9 corresponding with the position of stator 8 and boom hoisting 10；
H, by access path 11 into machine cheat overhauled.
Regulation top lifting height in the step b, step c and step d is respectively less than the hydraulic synchronization jack 1 for carrying out jacking
Jacking stroke.Jacking speed in the step b, step c and step d is respectively less than 20 centimeter per minutes.The one end of the screw rod 5
It is connected with top cover 2, the other end is connected by sleeve pipe with the base concrete 7 of the bottom of generator motor 6.Used in each step
The height of cushion block 4 be respectively less than the top lifting height of hydraulic synchronization jack 1 in back step.The step f is to use screw rod
5 and nut by the Suspending fixation of top cover 2 on the base concrete 7 of the bottom of generator motor 6, and below top cover 2 set support
Frame is supported protection.Boom hoisting 10 in the step g is chain block.Described first group of hydraulic synchronization jack 1
Hydraulic synchronization jack 1 with second group includes the hydraulic synchronization jack 1 of more than 3.
In top cover jacking, can be measured by setting up dial gauge, accurate measurement top cover is on tri- directions of X, Y, Z
Displacement, so as to the jacking state of adjustment hydraulic synchronization jack in time, i.e. top lifting height, top lift and jacking speed, it is ensured that
The steady jacking of top cover.Only dress need to be completed back by falling stator and top cover by above-mentioned steps reverse operating after the completion of maintenance.
The present invention is used in the experiment of Xianju, Zhejiang pumping energy storage power station project, can shorten maintenance duration 35 days, separate unit machine
Group can reduce the cost of overhaul more than 5,000,000；Calculated by the scale of 4, whole power station unit, can just reduce the cost of overhaul of entirety
More than 20000000.
Claims (6)
1. in large-scale pumped storage power unit open repair method is torn, it is characterised in that comprise the following steps：
A, two groups of hydraulic synchronization jack are circumferentially symmetrically disposed between top cover and base ring in direction, and all of hydraulic pressure is same
Step jack is connected and debugs with oil pump；
B, startup oil pump, by first group of hydraulic synchronization jack by the steady jacking of top cover, stop after reaching regulation top lifting height；
C, under second group of hydraulic synchronization jack cushion block is placed, restarting oil pump makes second group of hydraulic synchronization jack by top cover
Steady jacking, stops after reaching regulation top lifting height；
D, under first group of hydraulic synchronization jack cushion block is placed, restarting oil pump makes first group of hydraulic synchronization jack by top cover
Steady jacking, stops after reaching regulation top lifting height；
E, circulating repetition perform step c and step d, and two groups of hydraulic synchronization jack are used alternatingly carries out jacking, until by top cover
Jacking stops to after meeting maintenance requirement for height；
F, using screw rod and nut by top cover Suspending fixation on generator motor infrastructure concrete, and set below top cover
Put support frame and be supported protection；
G, stator is sling by stator suspension centre corresponding with gate positing and boom hoisting；
H, by access path into machine cheat overhauled；Described screw rod one end is connected with top cover, and the other end is by sleeve pipe and hair
Electric motor infrastructure concrete connection.
2. in large-scale pumped storage power unit according to claim 1 open repair method is torn, it is characterised in that：The step b, step
Regulation top lifting height in rapid c and step d is respectively less than the jacking stroke of the hydraulic synchronization jack for carrying out jacking.
3. in large-scale pumped storage power unit according to claim 1 open repair method is torn, it is characterised in that：The step b, step
Jacking speed in rapid c and step d is respectively less than 20 centimeter per minutes.
4. in large-scale pumped storage power unit according to claim 1 open repair method is torn, it is characterised in that：In each step
The top lifting height of hydraulic synchronization jack in the height of the cushion block for using respectively less than back step.
5. in large-scale pumped storage power unit according to claim 1 open repair method is torn, it is characterised in that：In the step g
Boom hoisting be chain block.
6. in the large-scale pumped storage power unit according to any claim in claim 1 to 5 open repair method is torn, its feature
It is：First group of hydraulic synchronization jack and second group of hydraulic synchronization jack are including the hydraulic synchronization thousand of more than 3
Jin top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058582.8A CN105525598B (en) | 2016-01-28 | 2016-01-28 | Repair method is torn open in large-scale pumped storage power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610058582.8A CN105525598B (en) | 2016-01-28 | 2016-01-28 | Repair method is torn open in large-scale pumped storage power unit |
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| Publication Number | Publication Date |
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| CN105525598A CN105525598A (en) | 2016-04-27 |
| CN105525598B true CN105525598B (en) | 2017-06-09 |
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| CN201610058582.8A Active CN105525598B (en) | 2016-01-28 | 2016-01-28 | Repair method is torn open in large-scale pumped storage power unit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109132943A (en) * | 2018-08-04 | 2019-01-04 | 国网福建省电力有限公司 | Aerial cooler original place maintenance craft method |
| CN109335996A (en) * | 2018-09-29 | 2019-02-15 | 东方电气集团东方电机有限公司 | A kind of lifting device for top cover and method |
| CN112128040B (en) * | 2020-09-23 | 2022-05-24 | 国家电网有限公司 | Inspection method for upper and lower leak-stopping rings of vertical shaft mixed-flow water turbine |
| CN113463583B (en) * | 2021-06-24 | 2022-03-18 | 中国长江电力股份有限公司 | Method for rapidly disassembling large oil cylinder of gate in water inlet accident of high-water-head power station on site |
| CN113864098B (en) * | 2021-08-26 | 2023-12-19 | 长江勘测规划设计研究有限责任公司 | Method for middle disassembly and lower disassembly, inspection and repair of rotating wheel of vertical shaft two-stage mixed flow unit |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102006039144A1 (en) * | 2006-08-16 | 2008-02-21 | Lodahl, Manfred, Dipl.-Ing. | Floating wave energy converter |
| CN202116236U (en) * | 2011-06-20 | 2012-01-18 | 王锁林 | Self-return hydraulic lifting jack |
| CN202250582U (en) * | 2011-08-04 | 2012-05-30 | 中国水电顾问集团西北勘测设计研究院 | Regulating and controlling device of leakage-stopping sealed gap of high-head radial-axial flow turbine runner |
| CN204371545U (en) * | 2014-12-15 | 2015-06-03 | 国家电网公司 | A kind of power station impeller apparatus for examination and repair |
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