CN1294342C - Steam turbine general-assembling cylinder-joining centering method - Google Patents
Steam turbine general-assembling cylinder-joining centering method Download PDFInfo
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- CN1294342C CN1294342C CN 02133984 CN02133984A CN1294342C CN 1294342 C CN1294342 C CN 1294342C CN 02133984 CN02133984 CN 02133984 CN 02133984 A CN02133984 A CN 02133984A CN 1294342 C CN1294342 C CN 1294342C
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Abstract
The present invention discloses a steam turbine general-assembling cylinder-joining centering method. In the method, the center height difference of a stationary part in the state of closing and opening a cylinder is added to the center height of the stationary part in the state of opening the cylinder in advance to reduce the center height of the stationary part to be the same with the center height of a rotor along with the increase of gravity after the cylinder is closed. In this way, the error of the present invention is greatly reduced as compared with a cylinder-opening centering method, and the present invention effectively avoids the bad results of the collision and the abrasion of steam sealing teeth, large oscillation of the rotor, etc. in the processes of starting and operating steam turbine set.
Description
Technical field
The present invention relates to the overall mounting technology of steam turbine, is that a kind of steam turbine general-assembling closes cylinder and looks for middle method specifically.
Background technique
Carry out steam turbine install purpose in looking for be for the rotatable parts (rotor) that make steam turbine concentric under operating states of the units with static part (diaphragm housing ring, dividing plate, packing, oil catch etc.), prevent the collision friction between dynamic and static two-part, guarantee the safe operation of through-flow gap and unit, the admission center that guarantees dividing plate is concentric with the admission center line of rotor, makes the unit acting of better exerting oneself.
Known to the inventor: up to now, steam turbine manufactory, power plant all adopt traditional cylinder of opening to look for middle method when steam turbine is installed.Owing to open under the cylinder state, second cylinder is not subjected to the effect of outer shell gravity in first, its distortion and deflection and close the bigger difference of existence under the cylinder state, look for the center under result and the running state to have bigger gap, cause steam turbine set open and running in gland sealing gear occurs and bump adverse consequencess such as mill, rotor oscillation are big.
Summary of the invention
Purpose of the present invention is exactly to open the disadvantage that cylinder looks for middle method to bring in order to overcome above-mentioned tradition, provides a kind of more near the middle technology of looking for of steam turbine set running state---steam turbine general-assembling closes cylinder and looks for middle method, and technical measures are as follows:
A kind of steam turbine general-assembling closes cylinder and looks for middle method: the center height value of measuring out cylinder respectively, closing static part under the cylinder state by the steel wire centering apparatus, the difference of two values is added in out on the center height of static part under the cylinder state, makes the center height of static part after closing cylinder, drop to identical with the center height of rotatable parts because of the gravity increase.
Method of the present invention is carried out as follows:
(1). open under the cylinder state, the steel wire centering apparatus be installed at cylinder front and back bearings case two ends, and adjust the steel wire position, make the level at the hollow nest of relative casing oil catch center, steel wire center and the error≤0.02mm on the Vertical direction, after mixing up with Fixation With Steel Wire;
(2). adjust about outer shell and high and low position, make error on the relative steel wire central horizontal direction of the hollow nest center of outer shell two ends packings≤± 0.05mm, error on the Vertical direction≤± 0.10mm, casing split level front and back are degree of raising unanimity laterally, vertically Yang Duda designing requirement;
(3). adjust inner casing center and level, it is reached and the same requirement of above-mentioned steps (2) outer shell;
(4). record above-mentioned steps (2), (3) are looked for intermediate value everywhere, and keep the steel wire center motionless.
(5). fasten first inner casing, diaphragm housing ring, outer shell, tighten the split bolt, with the steel wire be benchmark actual measurement outer shell packing, diaphragm housing ring and inner casing in each measuring point Vertical direction central value, in looking for front half cylinder measured value subtract each other the each point deflection, with the deflection record;
(6). unclamp the casing split bolt, hang out upper cylinder half, deflection is added on the adjustment pad of each second labyrinth casing, diaphragm housing ring and inner casing supporting lug, finished and closed during cylinder looks for.
Adopt abovementioned technology, behind its lid cylinder, because of deflection, the center of each static part just in time in the heart, when having guaranteed running state, rotor is concentric with static part, has reached to close the purpose that cylinder is looked for middle adjustment center.
The present invention with open cylinder look in the remarkable result compared of method be: adopts and of the present inventionly looks for middle method more near the steam turbine set running state, its error open cylinder look in method greatly reduce, avoided effectively steam turbine set open and running in gland sealing gear occurs and bump adverse consequencess such as mill, rotor oscillation are big.
Description of drawings
Fig. 1 is the explanatory drawing of step 1, step 2 in the inventive method;
Fig. 2 is the explanatory drawing of step 4 in the inventive method;
Fig. 3 is the explanatory drawing of step 5 in the inventive method.
Embodiment
Steam turbine general-assembling of the present invention closes during cylinder looks for, and is undertaken by following concrete steps:
(1). open (as Fig. 1) under the cylinder state, cylinder front and back bearings case two ends install the steel wire centering apparatus (for open cylinder look in the used existing apparatus of method), and adjustment steel wire 1 position, make the hollow nest of steel wire 1 relative casing oil catch center reach a-b≤0.02mm, c-(a+b)/2+fx-fl≤0.02mm, wherein: fx is measuring point place steel wire 1 deflection value, and fl is a measuring point place rotor bow value, and is after mixing up that steel wire 1 is fixing.(2). adjust about outer shell and high and low position (as Fig. 1), make relative steel wire 1 center, the hollow nest center of outer shell two ends packings reach a-b≤± 0.05mm, c-(a+b)/2+fx-fl≤± 0.10mm, casing split level front and back are degree of raising unanimity laterally, vertically Yang Duda designing requirement.(3). adjust inner casing center and level, make it reach the requirement the same with outer shell.(4). record step above-mentioned (2), (3) are looked for intermediate value C (as Fig. 2) everywhere, and keep steel wire 1 center motionless.(5). fasten first inner casing, diaphragm housing ring, outer shell, tighten the split bolt, wherein inner casing, outer shell need only tight 1/3 bolts; As Fig. 3, with steel wire 1 be benchmark actual measurement outer shell labyrinth casing, diaphragm housing ring (being static part 2) and inner casing measured value C in each measuring point Vertical direction central value C ' looks for front half cylinder subtract each other each point deflection δ, with deflection δ record.(6). unclamp the casing split bolt, hang out upper cylinder half, deflection δ is added on the adjustment pad of each second labyrinth casing, diaphragm housing ring and inner casing supporting lug.Finished and closed during cylinder looks for, carried out then surveying work such as through-flow gap during dividing plate looks for.
Above method has been finished and has been closed cylinder and look for middle purpose, makes it at lid cylinder state, the central value of each static part 2 just in time in the heart.
The cylinder that closes of the present invention is looked for middle method: the claimant overall application in the assembling of steam turbine 300MW of our unit and 600MW unit; In the assembling of the high pressure building block of claimant's D300H, D300K, D300L, D300N, D300P and D600A, units such as D600B, W900A and low pressure building block, all adopt this brand-new middle method of looking for.Through using proof: of the present invention close cylinder look in method effectively solved since opened originally that cylinder looks for that middle method brings with unit operation the time center have the problem of difference, reduce the friction and the vibration of unit sound parts in unlatching and running, received good effect.
Claims (2)
1. a steam turbine general-assembling closes cylinder and looks for middle method, it is characterized in that: the center height value of measuring out cylinder respectively, closing static part under the cylinder state by the steel wire centering apparatus, the difference of two values is added in out on the center height of static part under the cylinder state, makes the center height of static part after closing cylinder, drop to identical with the center height of rotatable parts because of the gravity increase.
2. steam turbine general-assembling according to claim 1 closes cylinder and looks for middle method, it is characterized in that: described method is carried out as follows
(1). open under the cylinder state, the steel wire centering apparatus be installed at cylinder front and back bearings case two ends, and adjust the steel wire position, make the level at the hollow nest of relative casing oil catch center, steel wire center and the error≤0.02mm on the Vertical direction, after mixing up with Fixation With Steel Wire;
(2). adjust about outer shell and high and low position, make error on the relative steel wire central horizontal direction of the hollow nest center of outer shell two ends packings≤± 0.05mm, error on the Vertical direction≤± 0.10mm, casing split level front and back are degree of raising unanimity laterally, vertically Yang Duda designing requirement;
(3). adjust inner casing center and level, it is reached and the same requirement of above-mentioned steps (2) outer shell;
(4). record above-mentioned steps (2), (3) are looked for intermediate value everywhere, and keep the steel wire center motionless;
(5). fasten first inner casing, diaphragm housing ring, outer shell, tighten the split bolt, with the steel wire is benchmark actual measurement outer shell labyrinth casing, diaphragm housing ring and inner casing in each measuring point Vertical direction central value, in looking for front half cylinder measured value subtract each other the each point deflection, with the deflection record;
(6). unclamp the casing split bolt, hang out upper cylinder half, deflection is added on the adjustment pad of each second labyrinth casing, diaphragm housing ring and inner casing supporting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133984 CN1294342C (en) | 2002-10-30 | 2002-10-30 | Steam turbine general-assembling cylinder-joining centering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02133984 CN1294342C (en) | 2002-10-30 | 2002-10-30 | Steam turbine general-assembling cylinder-joining centering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1405433A CN1405433A (en) | 2003-03-26 |
| CN1294342C true CN1294342C (en) | 2007-01-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02133984 Expired - Lifetime CN1294342C (en) | 2002-10-30 | 2002-10-30 | Steam turbine general-assembling cylinder-joining centering method |
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| CN (1) | CN1294342C (en) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100425942C (en) * | 2006-03-15 | 2008-10-15 | 哈尔滨汽轮机厂有限责任公司 | Luminous inside micrometer used for steam turbine three cylinders jointing and internal sleeve finding |
| CN102287242A (en) * | 2010-06-17 | 2011-12-21 | 上海宝钢设备检修有限公司 | Adjusting method of turbo-generator set shafting center |
| CN104034245A (en) * | 2014-06-20 | 2014-09-10 | 山东电力建设第一工程公司 | Steam turbine stationary part centering device |
| CN104314624B (en) * | 2014-08-20 | 2016-03-23 | 东方电气集团东方汽轮机有限公司 | A kind of device and method of steamer cover cylinder process monitoring central cylindrical change |
| CN105403131B (en) * | 2015-12-11 | 2017-11-17 | 东方电气集团东方汽轮机有限公司 | One kind rotates the class mechanically through-flow separately alignment method of lower half |
| CN106524873A (en) * | 2016-11-07 | 2017-03-22 | 中广核工程有限公司 | Steam turbine radial flow clearance measurement method |
| CN106593551B (en) * | 2017-01-20 | 2019-05-17 | 中广核工程有限公司 | A kind of Large Steam Turbine Sets touch the control method of cylinder test |
| CN110814731A (en) * | 2019-10-18 | 2020-02-21 | 中国电建集团山东电力建设第一工程有限公司 | Method for aligning shaft system of ultra-long steam turbine generator |
| CN111482799B (en) * | 2020-04-22 | 2021-08-17 | 中国电建集团四川工程有限公司 | Steam turbine shafting center adjusting method for simulating semi-solid cylinder or full-solid cylinder state |
| CN112228169B (en) * | 2020-09-01 | 2023-01-03 | 中核核电运行管理有限公司 | Split surface assembling method for high-pressure outer cylinder of nuclear turbine |
| CN112228163A (en) * | 2020-09-25 | 2021-01-15 | 华能国际电力股份有限公司南通电厂 | Turbine through-flow clearance adjusting process |
| CN113914939A (en) * | 2021-08-31 | 2022-01-11 | 华能国际电力股份有限公司丹东电厂 | Steam seal gap adjusting method for steam turbine set |
| CN115157009B (en) * | 2022-05-10 | 2024-04-19 | 南京汽轮电机(集团)有限责任公司 | Method for finding verticality of bearing seat of gas turbine |
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2002
- 2002-10-30 CN CN 02133984 patent/CN1294342C/en not_active Expired - Lifetime
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| CN1405433A (en) | 2003-03-26 |
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Owner name: DONGFANG ELECTRIC GROUP DONGFANG STEAM TURBINE CO. Free format text: FORMER NAME OR ADDRESS: DONGFAN STEAM TURBINE FACTORY |
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Address after: 618201 Deyang Mianzhu City, Sichuan Province town of Hanwang Patentee after: DONGFANG TURBINE Co.,Ltd. DTC Address before: 618201 Deyang Mianzhu City, Sichuan Province town of Hanwang Patentee before: Dongfang Steam Turbine Plant |
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