CN201639446U - Generator thrust collar heating detaching device - Google Patents
Generator thrust collar heating detaching device Download PDFInfo
- Publication number
- CN201639446U CN201639446U CN2010201644677U CN201020164467U CN201639446U CN 201639446 U CN201639446 U CN 201639446U CN 2010201644677 U CN2010201644677 U CN 2010201644677U CN 201020164467 U CN201020164467 U CN 201020164467U CN 201639446 U CN201639446 U CN 201639446U
- Authority
- CN
- China
- Prior art keywords
- thrust collar
- thrust runner
- spindle
- thrust
- generator
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Manufacture Of Motors, Generators (AREA)
Abstract
The utility model relates to a hydropower station generator equipment maintenance unit, namely a generator thrust collar heating detaching device, which is characterized in that an electric heating pad is added in each neutral gear of a thrust collar, and the electric heating pads are connected in parallel and connected with a power control cabinet. On a situation that the thrust collar is in close fit with a spindle, the thrust collar is heated, relative heat insulating measurement is taken on the periphery of the thrust collar, the thrust collar expands relative to the spindle so that transitional fit between the thrust collar and the spindle is changed into clearance fit temporally, and then the thrust collar can be pulled out smoothly by means of hoisting via a crane, thereby reducing labor intensity of workers, speeding up detachment of the thrust collar, guaranteeing smooth overhauling of the units, shortening maintenance period and obtaining better effect.
Description
Technical field
The utility model relates to a kind of hydropower generator maintenance of equipment device, and promptly the generator thrust runner adds heat disassembling device.
Background technology
In the generator maintenance process, what adopt when decomposing the thrust runner of thrust bearing is traditional handicraft: snap ring is decomposed, remove the connecting bolt and the shop bolt of thrust runner and runner plate, about utilizing brake with rotor jack-up 10mm, after 3 of branches are encased inside the epoxy resin board of uniform thickness between thrust runner and runner plate, the brake oil extraction, rotor and main shaft sink by deadweight, and repeated multiple times top rotor cushioning can decompose thrust runner to be removed.Because the frequent starting brake causes the fatigue damage of brake-piston seal cushion rubber and cisco unity malfunction, rotor can't jack-up, and thrust runner can't continue dismounting, and this will directly influence generator and expand and repair the duration.Because of thrust runner and main shaft are interference fits, its magnitude of interference can reach 0.02-0.06mm, generator thrust runner cooperation seam is the copper seam in addition, intensity is relatively poor, uses traditional handicraft to pull out thrust runner by force and very easily damages the cooperation seam, along with increasing of unit maintenance number of times, because of repeated treatments thrust runner seam, certainly will destroy the original tolerance fit system of thrust runner and main shaft, make it to graduate into matched in clearance, this safe operation to unit is totally unfavorable.
The utility model content
The purpose of this utility model is to provide a kind of generator thrust runner of dismantling better effects if to add heat disassembling device at above-mentioned deficiency.
Technical solution of the present utility model is: it is to add a slice electric blanket in each neutral gear of thrust runner that the generator thrust runner adds heat disassembling device, adopts parallel connection between the electric blanket and inserts electrical power control cabinet.
Cooperate tighter situation with main shaft at thrust runner, by thrust runner is heated, and take to be incubated accordingly measure in the thrust runner periphery, the relative main shaft of thrust runner produces and expands, make thrust runner and main shaft become matched in clearance temporarily, utilize the crane hoisting method thrust runner can be extracted smoothly by interference fits.
The utility model has the advantages that: adopt thrust runner to add heat disassembling device dismounting thrust runner, alleviated working strength of workers, accelerated the dismounting speed of thrust runner, guaranteed the smooth maintenance of unit, shorten maintenance duration, obtained effect preferably.
Below in conjunction with accompanying drawing execution mode of the present utility model is described in further detail.
Description of drawings
Fig. 1 is the utility model structure diagram.
Embodiment
Referring to Fig. 1, it is to add a slice electric blanket 3 in thrust runner 2 each neutral gear that the generator thrust runner adds heat disassembling device, adopts parallel connection between the electric blanket 3, and rated voltage is 380V, all inserts electrical power control cabinet.Be with the asbestos cloth parcel, to thrust runner 2 implementation insulations outside electric blanket 3 around the thrust runner 2.Put a thermometer 1 on main shaft 4 ends and thrust runner 2 respectively, the monitoring temperature difference between the two is too small as the temperature difference in real time, needs main shaft is taked corresponding cooling measure.People's monitor temperature is stayed at the scene, when the thrust runner temperature reaches 80 ℃, continues constant temperature 1-2 hour, promptly stops heating.Speed should not be too fast when heating, and temperature rise generally is controlled at 15-20 ℃/h.The employing thrust runner 2 of heating makes thrust runner 2 expanded by heating, cooperates the dismounting of crane hoisting method, cooperates crane main hook adjustment lifting level with chain block before the lifting, and measures levelness with level gauge, with crane thrust runner 2 is slowly sling after adjusting level.
The calculating of heating of thrust runner:
ΔT＝δ
p/αD
t＝40/11×10
-6×780＝46.6(℃)
Needed temperature rise when Δ T-pulls out thrust runner in the formula (℃)
The linear expansion coefficient of α-steel, α=11 * 10
-6(℃
-1)
D
tThe aperture that thrust runner cooperates with main shaft under the-room temperature (780mm)
δ
p-artificial selected thrust runner cooperates the aperture swell increment, general δ
p=0.30-0.50mm.
Heat and pull out the actual temperature that should reach of thrust runner and be:
T＝ΔT+T
0+Δt＝46.6+25+0＝71.6(℃)
In the formula T-pull out the actual temperature that should reach of thrust runner (℃)
T
0-erecting bed room temperature (℃) get 25 ℃
The temperature that Δ t-considers may to descend before pulling out thrust runner preparation (℃), can ignore.The thrust runner needed electric heating capacity of heating can be estimated by following formula:
P＝σFΔT×10
-2＝10×1.47×46.6×10
-2＝7(KW)
The electric heating capacity (KW) that the P-thrust runner is heated required in the formula
σ-heat insulating coefficient (5-12)
F-thrust runner bore area amasss (1.47m
2)
Claims (1)
1. a generator thrust runner adds heat disassembling device, it is characterized in that adding a slice electric blanket (3) in each neutral gear of thrust runner (2), adopts parallel connection between the electric blanket (3) and inserts electrical power control cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201644677U CN201639446U (en) | 2010-04-21 | 2010-04-21 | Generator thrust collar heating detaching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201644677U CN201639446U (en) | 2010-04-21 | 2010-04-21 | Generator thrust collar heating detaching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201639446U true CN201639446U (en) | 2010-11-17 |
Family
ID=43083952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201644677U Expired - Fee Related CN201639446U (en) | 2010-04-21 | 2010-04-21 | Generator thrust collar heating detaching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201639446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455172A (en) * | 2016-09-12 | 2017-02-22 | 国网浙江省电力公司紧水滩水力发电厂 | Automatic heating device of generator thrust block |
-
2010
- 2010-04-21 CN CN2010201644677U patent/CN201639446U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106455172A (en) * | 2016-09-12 | 2017-02-22 | 国网浙江省电力公司紧水滩水力发电厂 | Automatic heating device of generator thrust block |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101117 Termination date: 20130421 |