CN1194170C - Vertical plane interval regulating process for movable water-guiding vanes of water turbine - Google Patents
Vertical plane interval regulating process for movable water-guiding vanes of water turbine Download PDFInfo
- Publication number
- CN1194170C CN1194170C CNB021338760A CN02133876A CN1194170C CN 1194170 C CN1194170 C CN 1194170C CN B021338760 A CNB021338760 A CN B021338760A CN 02133876 A CN02133876 A CN 02133876A CN 1194170 C CN1194170 C CN 1194170C
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- CN
- China
- Prior art keywords
- guide vanes
- guide vane
- value
- water turbine
- vanes
- 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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- 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
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- Hydraulic Turbines (AREA)
Abstract
The present invention provides a technology for regulating vertical face gaps of moving guide vanes of a water turbine, which comprises the steps: 1) a regulating ring is rotated to the relative opening positions of 5% to 100% of guide vanes and is fixed; 2) the regulating ring and crank arms of the guide vanes are connected one by one by connecting fittings, a designed length value or angle value is accurately regulated, and the regulating ring and the crank arms of the guide vanes are locked; 3) all of the guide vanes are closed to be approach to zero gap by the regulating ring; 4) the numerical value of a maximal gap in the gaps of the guide vanes is looked up and accurately measured; 5) trimming is carried out, and the rest gaps of the guide vanes are all accurately regulated to the measured maximal gap value; 6) the guide vanes are closed to the 0 position, the numerical values of all of the gaps of the guide vanes are measured, checked and accepted, and the numerical values are qualified. Moulding surfaces of the guide vanes are not damaged because of the present invention, the angles and the opening degrees of the guide vanes can be accurately regulated, and the requirement of the stable operation of the water turbine is satisfied. Water sealing effects after the guide vanes are closed are enhanced, labor intensity and technology difficulty are reduced, and labor productivity is enhanced.
Description
Technical field:
What the present invention relates to is a kind of water turbine, particularly be a kind of vertical plane interval regulating process for movable water-guiding vanes of water turbine.
Background technique:
Water turbine is equipped with 20 or 24 movable guide vanes, closes movable guide vane and blocks current and realize to shut down, and opens movable guide vane current and enters water turbine and make its running.How many control activity guide vane aperture sizes just can control hydraulic generator unit rotating speed height or on-load.
20 or 24 movable guide vanes must be opened or close simultaneously, and the gap of vertical surface of closing between the movable guide vane in back must not surpass demand of technical standard, need correct technological method to instruct the adjustment of gap of vertical surface.
Existing movable guide vane vertical plane interval regulating process technology is: arbitrarily movable guide vane is closed one by one, with wire rope the whole show guide vane is bound.Because bearing against mutually between the adjacent activities guide vane produces a plurality of greater than zero gap of vertical surface.Again these gaps are shared to other contiguous guide vanes, be commonly called as and drive the gap away, the guide vane gap is reduced gradually up to meeting demand of technical standard.
No matter domestic, external water turbine is installed, maintenance, even carries out the hydraulic turbine model experiment in research institute and all generally adopt above-mentioned tratitional technology adjustment activity guide vane gap of vertical surface.
Existing vertical plane interval regulating process for movable water-guiding vanes of water turbine has the following disadvantages:
1, with wire rope encircling activity guide vane, damages guide vane aerofoil profile shape face easily.In guide rule is installed, require encircling activity guide vane as Canadian GE company etc., but do not allow to damage guide vane aerofoil profile shape face.
2, because do not have when closing movable guide vane one by one can reference operation standard, after all guide vanes were closed, there was bigger differential seat angle in each guide vane.
3, having near other guide vane majority of guide vane in big gap has been the zero clearance, and near the guide vane of suitable quantity must opening is again by rule of thumb shared the big gap that exists on a plurality of guide vanes, dwindles the guide vane gap gradually until qualified.Because of the gap is that zero guide vane bears against mutually, bound by wire rope again, operate very difficult, effort.Even practical experience is arranged very much, also need repeatedly meticulous repeatedly adjustment could satisfy the qualified requirement in gap unavoidably.
4, for want of guarantee the measure of the angle and the aperture unanimity between the adjacent guide vane of each guide vane, will cause that the angle of current and the flow circle distribution that enter water turbine are inhomogeneous, artificially increase hydraulic generator unit fluctuation of service factor.
5, because the angular error of guide vane, will make the sealing surface of adjacent two guide vane tens mm wides can not the contact of formation face, reduce the water sealing effect of shutting down when closing guide vane, the high-pressure spray cavitation damage that causes the guide vane sealing surface to be leaked easily to form.
Summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide a kind of guide vane profile that makes injury-free, can accurately adjust guide vane angle and aperture, satisfy water turbine stable operation requirement, improve guide vane and close the back water sealing effect, reduce labor intensity and technology difficulty, the vertical plane interval regulating process for movable water-guiding vanes of water turbine of raising labour productivity.Vertical plane interval regulating process for movable water-guiding vanes of water turbine of the present invention comprises the steps:
1), speed ring is turned to 5%～100% guide vane relative opening degree position, fixing;
2), connect speed ring and guide vane connecting lever one by one, accurately adjust to design length value or angle value, locking with duplex arm bolt or pin or cam pin;
3), whole guide vanes are closed near the zero clearance through speed ring;
4), search and accurately measure maximal clearance numerical value in the guide vane gap;
5), fine setting duplex arm bolt length or rotation cam pin or pin angle are all accurately adjusted to measured maximal clearance value with all the other guide vane gaps;
6) guide vane is closed to 0, measuring, check and accept whole guide vanes gap numerical value should be qualified.
Above-mentioned speed ring is turned to 20%～50% guide vane relative opening degree position, fixing, be convenient for measuring.
The present invention very science, in an orderly manner standard water turbine guide vane vertical plane interval regulating process step.With design load is according to control operation, only strictness is carried out necessary compensation by the turbine gate mechanism associated components cumulative error of tolerance production, obtain to exempt the best adjustment precision and the processing quality of human error, accurately adjust guide vane angle and aperture, do not damage the guide vane profile, improve guide vane and close the back water sealing effect, alleviate the cavitation damage of guide vane sealing surface, make the angle of current, the flow circumference that enter water turbine be evenly distributed with the stable operation that is beneficial to water turbine to greatest extent.Or else needed heavy industry binding guide vane, avoided a plurality of guide vane mutual extrusion and given the adjustment difficulty that operation brings, can finish whole technological operations very quick, effortlessly, reduction of erection time, raising work efficiency.Thoroughly having exempted the deficiency of original technology, is to continuing to use tradition, the great breakthrough that falls behind technology and the correction of science both at home and abroad in more than 100 year.
Embodiment:
Water turbine movable guide vane vertical plane interval regulating process comprises the steps:
1), speed ring is turned to 20%～50% guide vane relative opening degree position with chain hois or operation servomotor, fixing;
2), connect speed ring and guide vane connecting lever one by one, accurately adjust to the design length value, with also cap locking with the duplex arm bolt.Or connect speed ring and guide vane connecting lever one by one with pin, cam pin, and cam pin is accurately adjusted to the design zero-bit, fastening jackscrew prevents that cam pin from rotating;
3), the operation servomotor closes to whole guide vanes near the zero clearance through speed ring but is forbidden to occur the zero clearance, because may there be the extrusion-deformation value that is difficult to measure in the adjacent guide vane of zero clearance;
4), whole gaps of check measurement guide vane upper, middle and lower portion one by one, if exist same gap upper, middle and lower portion gap difference to exceed standard, it is qualified then press the code requirement processing;
5), lock servomotor or close the servomotor delivery valve, search and accurately measure the maximal clearance numerical value in the guide vane gap;
6), fine setting duplex arm bolt length or rotation cam pin angle are all accurately adjusted to measured maximal clearance value with all the other guide vane gaps;
7), remove the servomotor locking or open the servomotor delivery valve, the operation servomotor is closed to 0 with guide vane, and measuring, check and accept whole guide vanes gap numerical value should be qualified.
Claims (2)
1, vertical plane interval regulating process for movable water-guiding vanes of water turbine is characterized in that comprising the steps:
1), speed ring is turned to 5%～100% guide vane relative opening degree position, fixing;
2), connect speed ring and guide vane connecting lever one by one, accurately adjust to design length value or angle value, locking with duplex arm bolt or pin or cam pin;
3), whole guide vanes are closed near the zero clearance through speed ring;
4), search and accurately measure maximal clearance numerical value in the guide vane gap;
5), the angle of fine setting duplex arm bolt length or rotation pin or cam pin is all accurately adjusted to measured maximal clearance value with all the other guide vane gaps;
6) guide vane is closed to 0, measuring, check and accept whole guide vanes gap numerical value should be qualified.
2, vertical plane interval regulating process for movable water-guiding vanes of water turbine according to claim 1 is characterized in that described speed ring is turned to 20%～50% guide vane relative opening degree position, and is fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021338760A CN1194170C (en) | 2002-10-08 | 2002-10-08 | Vertical plane interval regulating process for movable water-guiding vanes of water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021338760A CN1194170C (en) | 2002-10-08 | 2002-10-08 | Vertical plane interval regulating process for movable water-guiding vanes of water turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1403705A CN1403705A (en) | 2003-03-19 |
| CN1194170C true CN1194170C (en) | 2005-03-23 |
Family
ID=4747440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021338760A Expired - Fee Related CN1194170C (en) | 2002-10-08 | 2002-10-08 | Vertical plane interval regulating process for movable water-guiding vanes of water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1194170C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297072B (en) * | 2011-08-04 | 2013-01-09 | 中国水电顾问集团西北勘测设计研究院 | Device and method for regulating and controlling leakage-stopping sealed gap of rotating wheel of high-waterhead mixed flow type water turbine |
-
2002
- 2002-10-08 CN CNB021338760A patent/CN1194170C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1403705A (en) | 2003-03-19 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050323 Termination date: 20171008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |