CN107462147A - A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely - Google Patents
A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely Download PDFInfo
- Publication number
- CN107462147A CN107462147A CN201710607694.9A CN201710607694A CN107462147A CN 107462147 A CN107462147 A CN 107462147A CN 201710607694 A CN201710607694 A CN 201710607694A CN 107462147 A CN107462147 A CN 107462147A
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- Prior art keywords
- steam turbine
- lower half
- tested steam
- tested
- cylinder
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
Abstract
A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely, is related to mechanical engineering field.Solves currently used cold conditions installation dynamic and static gaps measuring method, when gap is excessive, it is impossible to carry out quantitative measurment, the problem of measurement accuracy can not be ensured.The inventive method comprises the following steps：Step 1：The technology and pattern assembly of tested Steam Turbine is fixed at the bearing housing at cylinder both ends, then tested Steam Turbine lower half is covered into all installations in place；Step 2：According to tested Steam Turbine structure, measuring point, and place's arrangement strain transducer on each measuring point, step 3 are set at the packing of tested Steam Turbine lower half set：Tested Steam Turbine first half set is fallen on into its lower half to put, by flange by first half set and lower half set tight；Step 4：Dependent variable corresponding to each measuring point of tested Steam Turbine lower half set at packing is obtained by strain transducer, so as to complete to being tested Steam Turbine cylinder deflection metrology.It is mainly used in that Steam Turbine is installed.
Description
Technical field
The present invention relates to mechanical engineering field.
Background technology
The set complete real real cylinder dynamic and static gaps reserved value of cylinder-half in Turbo-generator Set steam turbine portion is one in steam turbine installation and repairing
Item is extremely important and elaboration, the too small dynamic and static gaps that produced in unit running process of gap reserved value touch mill, influences vapour
The safe operation of turbine；Gap reserved value is excessive to cause steam from labyrinth clearance over flood, reduces the heat consumption rate of unit.
Currently used cold conditions installation dynamic and static gaps measuring method mainly has pressing lead wires method, pressure silica gel method, adhesive fabric method, wood
Carve and coordinate clearance gauge to be combined use with adhesive plaster combined techniques etc., but these methods can only measure under cold conditions installment state adhesive plaster or
Gap width on scotch thickness direction, only plays qualitative analysis, when gap is excessive, then can not carry out quantitative measurement, can not
Ensure measurement accuracy.
The content of the invention
The present invention is in order to solve currently used cold conditions installation dynamic and static gaps measuring method, when gap is excessive, it is impossible to
Quantitative measurment is carried out, the problem of can not ensureing measurement accuracy, the real cylinder of real cylinder-half is scratched entirely the invention provides kind of Turbo-generator Set
Spend measuring method.
The real cylinder deflection metrology method of real cylinder-half, this method comprise the following steps a kind of Turbo-generator Set entirely：
Step 1：The technology and pattern assembly of tested Steam Turbine is fixed at the bearing housing at cylinder both ends, then by tested steamer
All installation is in place for unit lower half set；
Step 2：According to tested Steam Turbine structure, measuring point is set at the packing of tested Steam Turbine lower half set, and
Place's arrangement strain transducer on each measuring point, now, the initial value of strain transducer is 0；
Step 3：Tested Steam Turbine first half set is fallen on into its lower half to put, by flange by tested Steam Turbine
The first half covers and lower half set is tight；
Step 4：Tested Steam Turbine lower half is obtained by strain transducer and covers answering at packing corresponding to each measuring point
Variable, so as to complete the measurement to being tested Steam Turbine cylinder amount of deflection.
Preferably, the rule of setting measuring point is at the packing of tested Steam Turbine lower half set in step 2：Steamer
Unit lower half set includes multiple single portion's sets, when the packing number included during single portion covers is more than 3, sets two measuring points；When
When the packing number included in single portion's set is less than or equal to 3, a measuring point is set.
Preferably, described strain transducer is CDP-25 type strain transducers.
Principle analysis：The invention provides a kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder-half entirely, its core
It is to consider in unit cold conditions installation process, is measured by strain gauge transducer, because the effect of gravity and support can draws
Play lower half cylinder body amount of deflection to deform, installing dynamic and static gaps reserved value for cold conditions provides quantitative analytical data, reasonable distribution sound
Leaf labyrinth clearance, the layout drawing of amount of deflection measuring point at through-flow gap, referring specifically to Fig. 4, so as to provide safety and stability for Steam Turbine
Operation provides safeguard.The total number of measuring point is 15 in Fig. 4.
The beneficial effect that the present invention is brought is, by considering rotor and cylinder part inner room preset clearance in cold conditions installation process
Value, propose that a kind of steam turbine entirely reserve by deflection metrology method in the real cylinder cold conditions installation process of real cylinder-half, reasonable distribution dynamic and static gaps
Value, so that it is guaranteed that the purpose of Steam Turbine safe and stable operation., can be static by TDS-530 using technology and pattern assembly is prepared in situ
Data collecting instrument coordinates strain gauge transducer to realize that Turbo-generator Set entirely survey in the real cylinder cold conditions installation process of real cylinder-half by amount of deflection
Amount, by portion cover process of rising and falling, can real-time monitored cylinder body deflection deformation, improve measurement accuracy while, be also subsequent design
Reliable engineering experience is provided, measurement accuracy improves more than 5%.
Brief description of the drawings
Fig. 1 is a kind of flow chart of Turbo-generator Set of the present invention real cylinder deflection metrology method of real cylinder-half entirely；
Fig. 2 is the technology and pattern assembly sketch of tested Steam Turbine of the present invention；Reference 16 is I-steel,
Fig. 3 is the structural representation of I-steel；
Fig. 4 is the layout drawing of amount of deflection measuring point at through-flow gap of the present invention；Wherein, mark 1 to mark 15 is through-flow gap
The measuring point of corresponding packing.
Embodiment
Embodiment one：Illustrate present embodiment referring to Fig. 1 to Fig. 3, a kind of steamer hair described in present embodiment
The real cylinder deflection metrology method of real cylinder-half, this method comprise the following steps group of motors entirely：
Step 1：The technology and pattern assembly of tested Steam Turbine is fixed at the bearing housing at cylinder both ends, then by tested steamer
All installation is in place for unit lower half set；
Step 2：According to tested Steam Turbine structure, measuring point is set at the packing of tested Steam Turbine lower half set, and
Place's arrangement strain transducer on each measuring point, now, the initial value of strain transducer is 0；
Step 3：Tested Steam Turbine first half set is fallen on into its lower half to put, by flange by tested Steam Turbine
The first half covers and lower half set is tight；
Step 4：Tested Steam Turbine lower half is obtained by strain transducer and covers answering at packing corresponding to each measuring point
Variable, so as to complete the measurement to being tested Steam Turbine cylinder amount of deflection.
Present embodiment, the present invention are to use that technology and pattern assembly is prepared in situ, and can be matched somebody with somebody by TDS-530 static data Acquisition Instruments
Close strain gauge transducer and realize Turbo-generator Set deflection metrology in the real cylinder cold conditions installation process of real cylinder-half entirely, pass through what portion covered
Rise and fall process, can real-time monitored cylinder body deflection deformation, while improving measurement accuracy, also provides reliable engineering for subsequent design and passes through
Test.
In step 3, tested Steam Turbine first half set and lower half set are ensured by flange split tightly by flange
0.03mm clearance gauges do not enter.
Hair method of the present invention is mainly used in the installation process of Steam Turbine, when being installed for follow-up rotor, cylinder and rotor
Between the setting of through-flow gap reliable data basis is provided.During concrete application, obtained first by the inventive method
The dependent variable at packing corresponding to each measuring point of Steam Turbine lower half set must be tested, so as to obtain scratching at each measuring point packing
Degree, then, after tested Steam Turbine first half set is removed, rotor is arranged in cylinder, according to scratching at each measuring point packing
Information is spent, adjusts the through-flow gap at each measuring point packing, is protected so as to provide reliable installation for the accurate installation of Steam Turbine
Card.
Embodiment two：Illustrate present embodiment, present embodiment and embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of described Turbo-generator Set real cylinder deflection metrology method of real cylinder-half entirely is, in tested steamer in step 2
The rule of setting measuring point is at the packing of unit lower half set：Steam Turbine lower half set includes multiple single portion's sets, when single
When the packing number included in portion's set is more than 3, two measuring points are set；When the packing number included during single portion covers is less than or equal to 3,
One measuring point is set.
Embodiment three：Illustrate present embodiment, present embodiment and embodiment one referring to Fig. 1 to Fig. 3
A kind of difference of described Turbo-generator Set real cylinder deflection metrology method of real cylinder-half entirely is that described strain transducer is
CDP-25 type strain transducers.
In present embodiment, by TDS-530 static datas Acquisition Instrument CDP-25 strain transducers can be coordinated to carry out data
Measurement, measurement accuracy 0.01mm.
Claims (3)
1. a kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder-half entirely, it is characterised in that this method includes following step
Suddenly：
Step 1：The technology and pattern assembly of tested Steam Turbine is fixed at the bearing housing at cylinder both ends, then by tested Steam Turbine
All installation is in place for lower half set；
Step 2：According to tested Steam Turbine structure, measuring point is set at the packing of tested Steam Turbine lower half set, and every
Arrangement strain transducer in place's on individual measuring point, now, the initial value of strain transducer is 0；
Step 3：Tested Steam Turbine first half set is fallen on into its lower half to put, by flange by tested Steam Turbine upper half
Portion covers and lower half set is tight；
Step 4：Strain corresponding to each measuring point of tested Steam Turbine lower half set at packing is obtained by strain transducer
Amount, so as to complete the measurement to being tested Steam Turbine cylinder amount of deflection.
2. the real cylinder deflection metrology method of real cylinder-half, its feature exist a kind of Turbo-generator Set according to claim 1 entirely
In the rule for setting measuring point in step 2 at the packing of tested Steam Turbine lower half set is：Steam Turbine lower half set bag
Multiple single portion's sets are included, when the packing number included during single portion covers is more than 3, two measuring points are set；Included in single portion covers
Packing number be less than or equal to 3 when, set a measuring point.
3. the real cylinder deflection metrology method of real cylinder-half, its feature exist a kind of Turbo-generator Set according to claim 1 entirely
In described strain transducer is CDP-25 type strain transducers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607694.9A CN107462147A (en) | 2017-07-24 | 2017-07-24 | A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710607694.9A CN107462147A (en) | 2017-07-24 | 2017-07-24 | A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely |
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| Publication Number | Publication Date |
|---|---|
| CN107462147A true CN107462147A (en) | 2017-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710607694.9A Pending CN107462147A (en) | 2017-07-24 | 2017-07-24 | A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323022A (en) * | 2011-08-26 | 2012-01-18 | 重庆大唐科技股份有限公司 | A kind of strain gauge transducer of measurement structure amount of deflection |
| CN202188824U (en) * | 2011-08-25 | 2012-04-11 | 哈尔滨汽轮机厂有限责任公司 | Deflection measuring tool for solid cylinder of steam turbine |
| US20130092786A1 (en) * | 2011-10-13 | 2013-04-18 | Sikorsky Aircraft Corporation | Interferometric strain field sensor system for measuring rotor state |
| CN105783753A (en) * | 2016-03-10 | 2016-07-20 | 哈尔滨汽轮机厂有限责任公司 | Method for measuring steam turbine rotor deflection by using laser tracker |
| CN105783857A (en) * | 2016-04-21 | 2016-07-20 | 哈尔滨工业大学 | Method for measuring flexibility of turbine rotor |
| US20160376917A1 (en) * | 2015-06-29 | 2016-12-29 | Siemens Energy, Inc. | Method and an apparatus for measuring a deflection of a rotor of a turbomachine |
-
2017
- 2017-07-24 CN CN201710607694.9A patent/CN107462147A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202188824U (en) * | 2011-08-25 | 2012-04-11 | 哈尔滨汽轮机厂有限责任公司 | Deflection measuring tool for solid cylinder of steam turbine |
| CN102323022A (en) * | 2011-08-26 | 2012-01-18 | 重庆大唐科技股份有限公司 | A kind of strain gauge transducer of measurement structure amount of deflection |
| US20130092786A1 (en) * | 2011-10-13 | 2013-04-18 | Sikorsky Aircraft Corporation | Interferometric strain field sensor system for measuring rotor state |
| US20160376917A1 (en) * | 2015-06-29 | 2016-12-29 | Siemens Energy, Inc. | Method and an apparatus for measuring a deflection of a rotor of a turbomachine |
| CN105783753A (en) * | 2016-03-10 | 2016-07-20 | 哈尔滨汽轮机厂有限责任公司 | Method for measuring steam turbine rotor deflection by using laser tracker |
| CN105783857A (en) * | 2016-04-21 | 2016-07-20 | 哈尔滨工业大学 | Method for measuring flexibility of turbine rotor |
Non-Patent Citations (2)
| Title |
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| 刘国强等: "基于应变传感器的高精度悬臂梁挠度测量仪", 《仪器仪表学报》 * |
| 杜进韡等: "600MW汽轮机汽封间隙调整优化分析", 《华电技术》 * |
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