CN102900057A - Under-pressure non-full opening method for main water inlet ball valve of hydropower station - Google Patents
Under-pressure non-full opening method for main water inlet ball valve of hydropower station Download PDFInfo
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- CN102900057A CN102900057A CN2012104088525A CN201210408852A CN102900057A CN 102900057 A CN102900057 A CN 102900057A CN 2012104088525 A CN2012104088525 A CN 2012104088525A CN 201210408852 A CN201210408852 A CN 201210408852A CN 102900057 A CN102900057 A CN 102900057A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000007257 malfunction Effects 0.000 claims description 12
- 238000007689 inspection Methods 0.000 claims description 6
- 230000002596 correlated effect Effects 0.000 claims description 3
- 230000000875 corresponding effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
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- 230000005284 excitation Effects 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 230000009897 systematic effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 41
- 230000002159 abnormal effect Effects 0.000 description 1
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- 239000010720 hydraulic oil Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
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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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Abstract
The invention belongs to the technical field of a hydropower station and especially relates to an under-pressure non-full opening method for a main water inlet ball valve of the hydropower station. The under-pressure non-full opening method is suitable for the hydraulic locking maintenance of a large-size main water inlet ball valve in front of a volute or the non-full opening operation for the main water inlet ball valve under the other conditions of bearing higher water pressure of a high-head hydropower station when a draining pipeline is not emptied. The non-full opening problem of the main water inlet ball valve of the high-head hydropower station is solved by the under-pressure non-full opening method provided by the invention; the under-pressure non-full opening method has the advantages of simple and easily implemented method, safety, reliability, greatly reduced construction period, capability of saving cost, and the like; the under-pressure non-full opening method is especially suitable for the hydropower station with higher water head, bigger volume and heavier heavy of the main water inlet ball valve and higher pressure bearing value; the under-pressure non-full opening method is approved by multi-parties and is practically checked; the practical check confirms that the method is safe and reliable; the operation process is systematic and perfect; the reference significance is great; and the popularization value is high.
Description
Technical field
The invention belongs to the technical field in power station, relate in particular to the method for a kind of water power station owner water intake ball valve not standard-sized sheet with pressure.Be applicable to the high head hydroelectric power plant, do not needing when conduit pipe is emptying, need to carry out the not operation of standard-sized sheet to main water intake ball valve bearing in the larger hydraulic pressure situation to large-scale main water intake ball valve hydraulic locking maintenance before the spiral case or other.
Background technology
The master of high head hydroelectric power plant water intake ball valve ran into the ball valve body parts in the past needs maintenance, require ball valve not during the special circumstances of standard-sized sheet, because the ball valve deadweight is large and high head water power plant diversion tunnel pressure is larger, for guaranteeing that safety can only be with the water of conduit pipe all in the emptying situations, starting petrol station opens ball valve to required aperture, then close that ball valve servomotor advances draining valve or locked ball valve main distributing valve advances oil-discharging cavity, guarantee that ball valve process oil pipeline pressure oil remains unchanged, and makes ball valve rest on required aperture.
Because the general volume weight of main water intake ball valve of the employing before high head hydroelectric power plant's spiral case inlet is huge, and in order to guarantee the safety of unit, general this main water intake ball valve has the trend of closing voluntarily in the structure design in the stress-free situation of pressure oil pipeline, so also only allow to rest under normal circumstances the position of complete shut-down or standard-sized sheet.When needing not standard-sized sheet as processing ball valve hydraulic locking or other parts, for guaranteeing safety, can only wait diversion tunnel emptying, under anhydrous condition, carry out, and the water-filling after the emptying and maintenance of emptying diversion tunnel often needs the time in twenty or thirty sky, and doing like this is again effort consuming time.
Summary of the invention
The present invention is directed to above-mentioned problems of the prior art, the method for a kind of water power station owner water intake ball valve not standard-sized sheet with pressure is provided.
The present invention realizes that the technical scheme of the purpose of inventing is as follows:
The method of a kind of water power station owner water intake ball valve not standard-sized sheet with pressure, it comprises water power station owner water intake ball valve, suspender belt, bridge machine or crane; The implementation step is as follows:
(1) main water intake ball valve tank pressure is beaten to rated value, guaranteed that main water inlet valve system has enough operation oil pressure;
(2) the governor oil pressure tank is beaten to rated value, guaranteed that stator has clamping stroke;
(3) little stator pressure is beaten to rated value, guaranteed that little stator has clamping stroke;
(4) manually drop into the generator motor mechanical braking, and check that the input cavity pressure is normal, guarantee that unit can not rotate;
(5) stator is hydraulically locked in and drops into the position, prevent that the stator accident from opening the unit that causes and rotating;
(6) open governor pressure oil tank isolating valve at the oil gear switch board, make guide vane servomotor compress stator, prevent that unit from rotating;
(7) check cashier's office in a shop that at the electricity accent stator clamping stroke keeps normal in a long time;
(8) extract the governor guide vane servomotor and automatically lock to throw and move back electromagnetic valve and withdraw from plug, prevent that the stator guide vane servomotor from automatically locking malfunction and withdrawing from;
(9) pull up governor emergency shutdown electromagnetic valve, prevent the unit malfunction;
(10) adjust main water intake ball valve servomotor on-off valve both sides bolt to the desired location of working, speed is slow when finally guaranteeing main water intake ball valve unlatching, and aperture is controlled;
(11) 1 large oil pump of unlatching oil gear is for subsequent use to " zero load ";
(12) open main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, pressure oil is provided for main water intaking valve oil pipe line;
(13) manual excitation master water intake ball valve hydraulic locking electromagnetic valve receding side is extracted to withdraw from after inspection is withdrawed from and is dropped into the both sides plug, prevents the malfunction of main water intake ball valve hydraulic locking electromagnetic valve;
(14) check that main water intake ball valve upstream seal withdraws from correctly;
(15) check that owner's water intake ball valve manual locking withdraws from correctly;
(16) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " terrain " position by " distant place ";
(17) open main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, make main water intaking valve pressure at both sides balance;
(18) withdraw from the sealing of main water intake ball valve downstream at main water intake ball valve and setting-out switch board;
(19) the main water intake ball valve of inspection has been received the concora crush signal;
(20) press the manually opened button of main water intake ball valve at main water intake ball valve and setting-out switch board, make the aperture position that main water intaking valve opens to be needed;
(21) adjust main water intake ball valve servomotor on-off valve both sides bolt, close main water intake ball valve servomotor on-off valve, block main water intaking valve servomotor pressure oil loop, keep the current aperture of main water intaking valve constant;
(22) close main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, recover the bypass valve closed condition;
(23) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " excision " position by " terrain ", prevented malfunction;
(24) close main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, cut off main water intaking valve oil pipe line pressure oil-source, prevent main water intaking valve action;
(25) main water intake ball valve servomotor is closed chamber oil pipe line pressure release, and keep the pressure release state, the pressure oil that prevents from closing in the oil pipe line of chamber is closed main water intaking valve;
(26) monitor the larger displacement of nothing in the stator normal and main water intake ball valve servomotor piston rod long period of clamping stroke, prevent the main water intaking valve action situation appearance that pipe valve is not closed completely and causes;
(27) observe certain hour without after unusual, cooperate corresponding suspender belt that the pivoted arm of main water intake ball valve is protected with bridge machine or lifting appliance, this state 10 minutes and without after unusual, the upkeep operation that can be correlated with;
(28) after service work is finished, recover main water intake ball valve and close chamber oil pipe line pressure release place, open main water intake ball valve pressure oil tank isolating valve, slowly open main water intake ball valve servomotor on-off valve both sides bolt, make main water intake ball valve slowly closing, drop into main water intake ball valve working seal and locking, and check that each equipment normally gets final product.
Advantage of the present invention and good effect are:
The research that the present invention is deep ball valve operating principle and through a large amount of practice, under the premise that security is guaranteed, all utilize on-the-spot existing equipment, utilize brand-new method, do not need emptying conduit pipe, can solve the not standard-sized sheet problem under the main water intake ball valve specific (special) requirements.
The solution of the invention the not standard-sized sheet problem with pressure of the master of high head hydroelectric power plant water intake ball valve, have simple, safe and reliable, the great reduction of erection time of method, the advantage such as reduce expenses.Be particularly suitable for higher, the main water intake ball valve volume weight of head large and bear the higher power station of force value.The present invention has passed through approval in many ways, and has passed through the check of practice, confirms that the method is safe and reliable, operating process system, perfect, and reference is large, has very strong promotional value.
Below in conjunction with specific embodiments of the invention, the present invention is described in detail.
The specific embodiment
Embodiment 1:
The present invention is the method for a kind of water power station owner water intake ball valve not standard-sized sheet with pressure, and needed auxiliary security instrument comprises when implementing: one in one of the suspender belt that is fit to, the bridge machine that is fit to or crane.
Implementation step of the present invention is as follows:
(1) main water intake ball valve tank pressure is beaten to rated value, guaranteed that main water inlet valve system has enough operation oil pressure;
(2) the governor oil pressure tank is beaten to rated value, guaranteed that stator has clamping stroke;
(3) little stator pressure is beaten to rated value, guaranteed that little stator has clamping stroke;
(4) manually drop into the generator motor mechanical braking, and check that the input cavity pressure is normal, guarantee that unit can not rotate;
(5) stator is hydraulically locked in and drops into the position, prevent that the stator accident from opening the unit that causes and rotating;
(6) open governor pressure oil tank isolating valve at the oil gear switch board, make guide vane servomotor compress stator, prevent that unit from rotating;
(7) check cashier's office in a shop that at the electricity accent stator clamping stroke keeps normal in a long time;
(8) extract the governor guide vane servomotor and automatically lock to throw and move back electromagnetic valve and withdraw from plug, prevent that the stator guide vane servomotor from automatically locking malfunction and withdrawing from;
(9) pull up governor emergency shutdown electromagnetic valve, prevent the unit malfunction;
(10) adjust main water intake ball valve servomotor on-off valve both sides bolt to the desired location of working, speed is slow when finally guaranteeing main water intake ball valve unlatching, and aperture is controlled;
(11) 1 large oil pump of unlatching oil gear is for subsequent use to " zero load ";
(12) open main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, pressure oil is provided for main water intaking valve oil pipe line;
(13) manual excitation master water intake ball valve hydraulic locking electromagnetic valve receding side is extracted to withdraw from after inspection is withdrawed from and is dropped into the both sides plug, prevents the malfunction of main water intake ball valve hydraulic locking electromagnetic valve;
(14) check that main water intake ball valve upstream seal withdraws from correctly;
(15) check that owner's water intake ball valve manual locking withdraws from correctly;
(16) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " terrain " position by " distant place ";
(17) open main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, make main water intaking valve pressure at both sides balance;
(18) withdraw from the sealing of main water intake ball valve downstream at main water intake ball valve and setting-out switch board;
(19) the main water intake ball valve of inspection has been received the concora crush signal;
(20) press the manually opened button of main water intake ball valve at main water intake ball valve and setting-out switch board, make the aperture position that main water intaking valve opens to be needed;
(21) adjust main water intake ball valve servomotor on-off valve both sides bolt, close main water intake ball valve servomotor on-off valve, block main water intaking valve servomotor pressure oil loop, keep the current aperture of main water intaking valve constant;
(22) close main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, recover the bypass valve closed condition;
(23) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " excision " position by " terrain ", prevented malfunction;
(24) close main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, cut off main water intaking valve oil pipe line pressure oil-source, prevent main water intaking valve action;
(25) main water intake ball valve servomotor is closed chamber oil pipe line pressure release, and keep the pressure release state, the pressure oil that prevents from closing in the oil pipe line of chamber is closed main water intaking valve;
(26) monitor the larger displacement of nothing in the stator normal and main water intake ball valve servomotor piston rod long period of clamping stroke, prevent the main water intaking valve action situation appearance that pipe valve is not closed completely and causes;
(27) observe certain hour without after unusual, cooperate corresponding suspender belt that the pivoted arm of main water intake ball valve is protected with bridge machine or lifting appliance, this state 10 minutes and without after unusual, the upkeep operation that can be correlated with;
(28) after service work is finished, recover main water intake ball valve and close chamber oil pipe line pressure release place, open main water intake ball valve pressure oil tank isolating valve, slowly open main water intake ball valve servomotor on-off valve both sides bolt, make main water intake ball valve slowly closing, drop into main water intake ball valve working seal and locking, and check that each equipment normally gets final product.
In the specific implementation, the present invention also need to be in whole operating process, high pressure oil jacking device, and unit brake switch board, governor switch board, water wheel chamber preferably have the special messenger to nurse.When the favourable turn abnormal conditions appear in unit, hydraulic oil jack-up can be dropped into, brake withdraws from, and in time closes main water intake ball valve.The rotating part of unit is forbidden construction in whole process.Need unified command, guarantee the unimpeded of communication.
Claims (1)
1. the method for a water power station owner water intake ball valve not standard-sized sheet with pressure, it comprises water power station owner water intake ball valve, suspender belt, bridge machine or crane; It is characterized in that: the implementation step is as follows:
(1) main water intake ball valve tank pressure is beaten to rated value, guaranteed that main water inlet valve system has enough operation oil pressure;
(2) the governor oil pressure tank is beaten to rated value, guaranteed that stator has clamping stroke;
(3) little stator pressure is beaten to rated value, guaranteed that little stator has clamping stroke;
(4) manually drop into the generator motor mechanical braking, and check that the input cavity pressure is normal, guarantee that unit can not rotate;
(5) stator is hydraulically locked in and drops into the position, prevent that the stator accident from opening the unit that causes and rotating;
(6) open governor pressure oil tank isolating valve at the oil gear switch board, make guide vane servomotor compress stator, prevent that unit from rotating;
(7) check cashier's office in a shop that at the electricity accent stator clamping stroke keeps normal in a long time;
(8) extract the governor guide vane servomotor and automatically lock to throw and move back electromagnetic valve and withdraw from plug, prevent that the stator guide vane servomotor from automatically locking malfunction and withdrawing from;
(9) pull up governor emergency shutdown electromagnetic valve, prevent the unit malfunction;
(10) adjust main water intake ball valve servomotor on-off valve both sides bolt to the desired location of working, speed is slow when finally guaranteeing main water intake ball valve unlatching, and aperture is controlled;
(11) 1 large oil pump of unlatching oil gear is for subsequent use to " zero load ";
(12) open main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, pressure oil is provided for main water intaking valve oil pipe line;
(13) manual excitation master water intake ball valve hydraulic locking electromagnetic valve receding side is extracted to withdraw from after inspection is withdrawed from and is dropped into the both sides plug, prevents the malfunction of main water intake ball valve hydraulic locking electromagnetic valve;
(14) check that main water intake ball valve upstream seal withdraws from correctly;
(15) check that owner's water intake ball valve manual locking withdraws from correctly;
(16) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " terrain " position by " distant place ";
(17) open main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, make main water intaking valve pressure at both sides balance;
(18) withdraw from the sealing of main water intake ball valve downstream at main water intake ball valve and setting-out switch board;
(19) the main water intake ball valve of inspection has been received the concora crush signal;
(20) press the manually opened button of main water intake ball valve at main water intake ball valve and setting-out switch board, make the aperture position that main water intaking valve opens to be needed;
(21) adjust main water intake ball valve servomotor on-off valve both sides bolt, close main water intake ball valve servomotor on-off valve, block main water intaking valve servomotor pressure oil loop, keep the current aperture of main water intaking valve constant;
(22) close main water intake ball valve bypass valve at main water intake ball valve and setting-out switch board, recover the bypass valve closed condition;
(23) main water intake ball valve and setting-out switch board master water intake ball valve system electromagnetic valve terrain/distant place selector switch are cut to " excision " position by " terrain ", prevented malfunction;
(24) close main water intake ball valve pressure oil tank isolating valve at the oil gear switch board, cut off main water intaking valve oil pipe line pressure oil-source, prevent main water intaking valve action;
(25) main water intake ball valve servomotor is closed chamber oil pipe line pressure release, and keep the pressure release state, the pressure oil that prevents from closing in the oil pipe line of chamber is closed main water intaking valve;
(26) monitor the larger displacement of nothing in the stator normal and main water intake ball valve servomotor piston rod long period of clamping stroke, prevent the main water intaking valve action situation appearance that pipe valve is not closed completely and causes;
(27) observe certain hour without after unusual, cooperate corresponding suspender belt that the pivoted arm of main water intake ball valve is protected with bridge machine or lifting appliance, this state 10 minutes and without after unusual, the upkeep operation that can be correlated with;
(28) after service work is finished, recover main water intake ball valve and close chamber oil pipe line pressure release place, open main water intake ball valve pressure oil tank isolating valve, slowly open main water intake ball valve servomotor on-off valve both sides bolt, make main water intake ball valve slowly closing, drop into main water intake ball valve working seal and locking, and check that each equipment normally gets final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210408852.5A CN102900057B (en) | 2012-10-24 | 2012-10-24 | Under-pressure non-full opening method for main water inlet ball valve of hydropower station |
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| CN201210408852.5A CN102900057B (en) | 2012-10-24 | 2012-10-24 | Under-pressure non-full opening method for main water inlet ball valve of hydropower station |
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| CN102900057B CN102900057B (en) | 2014-10-08 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388552A (en) * | 2013-05-23 | 2013-11-13 | 国家电网公司 | Ball valve control device for hydroelectric generating set and control method thereof |
| CN103453199A (en) * | 2013-09-13 | 2013-12-18 | 国家电网公司 | Method for ensuring normal starting of unit in case of loss of position signals of bypass valve of main water inlet valve |
| CN104005389A (en) * | 2014-05-15 | 2014-08-27 | 国家电网公司 | Device and method for opening water inlet valve, device and method for closing water inlet valve and water inlet valve control system |
| CN104846794A (en) * | 2015-04-22 | 2015-08-19 | 杭州富春江水电设备有限公司 | Water inlet main valve for hydropower station and operation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238556A1 (en) * | 1981-10-24 | 1983-05-11 | Kinemura, Masao, Hiroshima | Water-power station |
| CN101430358A (en) * | 2008-12-10 | 2009-05-13 | 河南国网宝泉抽水蓄能有限公司 | Head-machine first water pump behavior full-group start test method for pump storage plant |
| CN101550900A (en) * | 2009-05-12 | 2009-10-07 | 福建万新发电设备有限公司 | Valve control device and control method thereof |
| CN201933473U (en) * | 2010-06-09 | 2011-08-17 | 水利部农村电气化研究所 | Small-sized water wheel power station |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1714035A1 (en) * | 1990-06-11 | 1992-02-23 | Восточно-Сибирское отделение Всесоюзного проектно-изыскательского и научно-исследовательского объединения "Гидропроект" им.С.Я.Жука | Method for inspection and repair of pressure tunnel of hydroelectric station |
-
2012
- 2012-10-24 CN CN201210408852.5A patent/CN102900057B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3238556A1 (en) * | 1981-10-24 | 1983-05-11 | Kinemura, Masao, Hiroshima | Water-power station |
| CN101430358A (en) * | 2008-12-10 | 2009-05-13 | 河南国网宝泉抽水蓄能有限公司 | Head-machine first water pump behavior full-group start test method for pump storage plant |
| CN101550900A (en) * | 2009-05-12 | 2009-10-07 | 福建万新发电设备有限公司 | Valve control device and control method thereof |
| CN201933473U (en) * | 2010-06-09 | 2011-08-17 | 水利部农村电气化研究所 | Small-sized water wheel power station |
Non-Patent Citations (1)
| Title |
|---|
| 张春等: "高水头抽水蓄能电站球阀与导叶联动的关闭规律研究", 《水电能源科学》, vol. 29, no. 12, 31 December 2011 (2011-12-31), pages 128 - 131 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388552A (en) * | 2013-05-23 | 2013-11-13 | 国家电网公司 | Ball valve control device for hydroelectric generating set and control method thereof |
| CN103388552B (en) * | 2013-05-23 | 2015-12-02 | 国家电网公司 | Hydropower Unit valve control device and controlling method thereof |
| CN103453199A (en) * | 2013-09-13 | 2013-12-18 | 国家电网公司 | Method for ensuring normal starting of unit in case of loss of position signals of bypass valve of main water inlet valve |
| CN103453199B (en) * | 2013-09-13 | 2016-09-07 | 国家电网公司 | The method that unit normally starts is ensured during main water intaking valve bypass valve position dropout |
| CN104005389A (en) * | 2014-05-15 | 2014-08-27 | 国家电网公司 | Device and method for opening water inlet valve, device and method for closing water inlet valve and water inlet valve control system |
| CN104846794A (en) * | 2015-04-22 | 2015-08-19 | 杭州富春江水电设备有限公司 | Water inlet main valve for hydropower station and operation method thereof |
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|---|---|
| CN102900057B (en) | 2014-10-08 |
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Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: LIAONING PUSHIHE WATER-STORAGE CO., LTD. Effective date: 20130922 Owner name: STATE GRID XINYUAN CO., LTD. LIAONING PUSHIHE WATE Effective date: 20130922 |
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Effective date of registration: 20130922 Address after: 100031 West Chang'an Avenue, Beijing, No. 86 Applicant after: State Grid Corporation of China Applicant after: State Grid Xinyuan Co., Ltd. Applicant after: Liaoning Pushihe Water-Storage Co., Ltd. Address before: 118216 Liaoning province Dandong City Zhen'an District Taiping Bay Applicant before: Liaoning Pushihe Water-Storage Co., Ltd. |
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