CN106988955A - Hydroenergy storage station transient process unit draft tube malleation ensures system and method - Google Patents
Hydroenergy storage station transient process unit draft tube malleation ensures system and method Download PDFInfo
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- CN106988955A CN106988955A CN201710334068.7A CN201710334068A CN106988955A CN 106988955 A CN106988955 A CN 106988955A CN 201710334068 A CN201710334068 A CN 201710334068A CN 106988955 A CN106988955 A CN 106988955A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000001052 transient effect Effects 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 117
- 230000003020 moisturizing effect Effects 0.000 claims abstract description 50
- 238000005273 aeration Methods 0.000 claims abstract description 16
- 230000000694 effects Effects 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 4
- CUZMQPZYCDIHQL-VCTVXEGHSA-L calcium;(2s)-1-[(2s)-3-[(2r)-2-(cyclohexanecarbonylamino)propanoyl]sulfanyl-2-methylpropanoyl]pyrrolidine-2-carboxylate Chemical compound [Ca+2].N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1.N([C@H](C)C(=O)SC[C@@H](C)C(=O)N1[C@@H](CCC1)C([O-])=O)C(=O)C1CCCCC1 CUZMQPZYCDIHQL-VCTVXEGHSA-L 0.000 claims 1
- 230000005611 electricity Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B13/00—Adaptations of machines or engines for special use; Combinations of machines or engines with driving or driven apparatus; Power stations or aggregates
- F03B13/06—Stations or aggregates of water-storage type, e.g. comprising a turbine and a pump
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/004—Valve arrangements
-
- 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
-
- 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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/16—Mechanical energy storage, e.g. flywheels or pressurised fluids
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Water Turbines (AREA)
Abstract
Ensure system and method the invention discloses a kind of hydroenergy storage station transient process unit draft tube malleation, including pump turbine runner envelope and draft tube cone, the hole that bore is the Φ 450 of Φ 350 is offered on the top cover of pump turbine at the top of the position of unit centre or the draft tube cone, moisturizing pipeline is connected with the hole, the other end of the moisturizing pipeline is connected with full factory's low pressure water main, and first manual valve, check-valves and the second hand-operated valve are disposed with along moisturizing water (flow) direction from full factory's low pressure water main junction on the moisturizing pipeline；Full factory's low pressure water main is above disposed with pressure wave against water (flow) direction with the moisturizing pipeline junction certainly and stops valve and aeration valve in advance.Design of the present invention is simple and clear, and investment is relatively saved, economical and practical.Solve the technical problem for perplexing industry for many years, it is to avoid the emergency measures shut down after load rejection using pump turbine water intake ball valve, it is ensured that power plant safety.
Description
Technical field
The present invention relates to hydroenergy storage station field, more particularly to a kind of pump turbine draft tube negative pressure problem that solves
Hydroenergy storage station transient process unit draft tube malleation ensures system and method.
Background technology
Current hydroenergy storage station pump turbine generally existing has the too low and insoluble problem of draft tube negative pressure.Cause
Larger for the general capacity of hydroenergy storage station, unit number of units is more, and head/lift is higher, is cost saving, often several
Platform machine shares a channel system, causes water-carriage system more complicated, while power station is sent out, loop is less, and electrical main connecting wire is difficult to keep away
The mode of connection intersected with channel system is opened, therefore Calculations of Hydraulic Transient operating mode is more, especially runner characteristic generally existing " S "
Area, causes partial load rejection operating mode pressure in draft tube extremely low and unavoidable situation, for hydroenergy storage station, turns
The depth of immersion of wheel is deeper, and negative pressure occurs in draft tube after such as removal of load, is likely to result in water column fracture, causes back water hammer to lift machine,
Cause hardly imaginable consequence.
The content of the invention
It is an object of the invention to provide a kind of it is possible to prevente effectively from draft tube produces the unit draft tube malleation guarantor of negative pressure
System and method are demonstrate,proved, so as to solve foregoing problems present in prior art, the present invention can also destroy hydraulic turbine condition simultaneously
Under harmful vortex rope for being likely to form, be conducive to stable operation of unit.
To achieve these goals, the technical solution adopted by the present invention is as follows：
A kind of hydroenergy storage station transient process unit draft tube malleation ensures system, including pump turbine runner envelope and
Offering bore at the top of the position of unit centre or the draft tube cone on draft tube cone, the top cover of pump turbine is
Moisturizing pipeline, the other end of the moisturizing pipeline and full factory's low pressure water main are connected with Φ 350- Φ 450 hole, the hole
On connection, the moisturizing pipeline first is disposed with from full factory's low pressure water main junction along moisturizing water (flow) direction
Hand-operated valve, check-valves and the second hand-operated valve；Full factory's low pressure water main is upper to flow against the current with the moisturizing pipeline junction certainly
Direction is disposed with pressure wave and stops valve and aeration valve in advance.
It is preferred that, the water source of full factory's low pressure water main is derived under power station after storehouse or unit tail lock, described complete
The intake that factory low pressure water main is used to fetch water from water source provided with two or more, the caliber of full factory's low pressure water main
For DN350~DN500.
It is preferred that, it is additionally provided with the pipeline between the first manual valve and the check-valves on the moisturizing pipeline
Automatically operated valve.
It is preferred that, the automatically operated valve selects motor-driven valve or hydraulic control valve.
It is preferred that, opened on the top cover of the pump turbine at the top of the position of unit centre or the draft tube cone
If hole bore be Φ 350 or so.
It is preferred that, multiple moisturizing pipelines are connected with full factory's low pressure water main, each moisturizing pipeline
It is connected on a hole.
It is preferred that, the hole first choice is opened at the top of the draft tube cone.
It is preferred that, the caliber of the moisturizing pipeline is DN350~DN450；The check-valves soon and is stopped from keying speed
Return the good micro-resistance slowly-closed valve of effect；The drainage gallery that the pressure wave stops valve in advance is connected with sump.
It is preferred that, the pressure wave stops valve and stops valve in advance from bore for DN100 pressure wave in advance, and the aeration valve selects mouth
Footpath is DN100 aeration valve.
A kind of hydroenergy storage station transient process unit draft tube malleation described in application ensures that system realizes unit tail water
The method that pipe malleation ensures, comprises the following steps：
Unit is in turbinging or during non-hydraulic turbine condition, when pressure in draft tube is less than the pressure in moisturizing pipeline
During power, press water enters the straight lower tail of runner envelope from the perforate of water pump water wheels top cover automatically from full factory's low pressure water main through moisturizing pipeline
Water pipe directly enters draft tube by draft tube cone top drilling, it is ensured that pressure is not in negative to draft tube under any circumstance
Value；When unit pressure in draft tube is higher than moisturizing manifold pressure, check-valves plays a part of check valve, prevents in draft tube
Press water is reached in full factory's low pressure water main；
When being provided with automatically operated valve on the pipeline between the first manual valve and the check-valves on moisturizing pipeline
When, the automatically operated valve is opened during hydraulic turbine condition, and the automatically operated valve is closed during non-hydraulic turbine condition.
The beneficial effects of the invention are as follows：
The present invention can solve the problem of hydroenergy storage station transient process unit pressure in draft tube is too low well, it is ensured that electricity
Stand safe, while harmful vortex rope when pump turbine is normally run produced by draft tube can be also destroyed, to hydraulic turbine condition
It is stable to play preferable effect.Design of the present invention is simple and clear, and investment is relatively saved, economical and practical.Solve for many years
Perplex the technical problem of industry, it is to avoid arranged very much using what pump turbine water intake ball valve was shut down after load rejection
Apply, it is ensured that power plant safety.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Wherein：1--- moisturizing pipelines；The hand-operated valves of 2--- second；3--- check-valves；4--- automatically operated valves；5--- is first-hand
Dynamic valve；The full factory's low pressure water mains of 6---；7--- pressure waves stop valve in advance；8--- aeration valves.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing, the present invention is entered
Row is further described.It should be appreciated that embodiment described herein is not used to only to explain the present invention
Limit the present invention.
As shown in Figure 1, system is ensured the invention discloses a kind of hydroenergy storage station transient process unit draft tube malleation
Close to the position of unit centre or institute on system, including pump turbine runner envelope and draft tube cone, the top cover of pump turbine
State and be connected with moisturizing pipeline, the moisturizing pipeline on the hole for offering that bore is Φ 350- Φ 450 at the top of draft tube cone, the hole
The other end be connected with full factory's low pressure water main, on the moisturizing pipeline from full factory's low pressure water main junction it is suitable
Moisturizing water (flow) direction is disposed with first manual valve, check-valves and the second hand-operated valve；Full factory's low pressure water main is upper certainly
Pressure wave is disposed with against water (flow) direction stop valve and aeration valve in advance with the moisturizing pipeline junction.Full factory's low pressure supplies water
The water source of house steward is derived under power station after storehouse or unit tail lock, and full factory's low pressure water main is used for provided with two or more
The intake fetched water from water source, the caliber of full factory's low pressure water main is DN350~DN500.On the moisturizing pipeline
Automatically operated valve is additionally provided with pipeline between the first manual valve and the check-valves.The automatically operated valve is from electricity
Dynamic valve or hydraulic control valve.On the top cover of the pump turbine at the top of the position of unit centre or the draft tube cone
The bore in the hole opened up is preferably Φ 350 or so.Multiple moisturizing pipelines are connected with full factory's low pressure water main, often
The individual moisturizing pipeline is connected on a hole.The hole first choice is opened at the top of the draft tube cone.The filling pipe
The caliber in road is DN350~DN450；The check-valves selects keying speed fast and the good micro-resistance slowly-closed valve of non-return effect；It is described
The drainage gallery that pressure wave stops valve in advance is connected with sump.It is pre- for DN100 pressure wave from bore that the pressure wave stops valve in advance
Only valve, the aeration valve is from the aeration valve that bore is DN100.
A kind of hydroenergy storage station transient process unit draft tube malleation described in application ensures that system realizes unit tail water
The method that pipe malleation ensures, comprises the following steps：
Unit is in turbinging or during non-hydraulic turbine condition, when pressure in draft tube is less than the pressure in moisturizing pipeline
During power, press water enters the straight lower tail of runner envelope from the perforate of water pump water wheels top cover automatically from full factory's low pressure water main through moisturizing pipeline
Water pipe directly enters draft tube by draft tube cone top drilling, it is ensured that pressure is not in negative to draft tube under any circumstance
Value；When unit pressure in draft tube is higher than moisturizing manifold pressure, check-valves plays a part of check valve, prevents in draft tube
Press water is reached in full factory's low pressure water main；
When being provided with automatically operated valve on the pipeline between the first manual valve and the check-valves on moisturizing pipeline
When, the automatically operated valve is opened during hydraulic turbine condition, and the automatically operated valve is closed during non-hydraulic turbine condition.
Present invention aims at solve the skill of puzzlement industry for many years using simplest economical and practical automatic water supplement method
Art problem, so as to ensure power plant safety.In order to solve this technical problem, the technical solution adopted by the present invention is as follows：
Automatic water supplement scheme include check-valves, automatically operated valve, pressure wave in advance stop valve (safety valve), aeration valve, hand-operated valve,
Moisturizing pipeline etc..Press water is directly supplied by the full factory's low pressure water main system in power station, is arranged on full factory's low pressure water main
Necessary pressure wave stops valve (safety valve), aeration valve in advance.Automatically operated valve, check-valves etc. are separately configured for every machine.In water
Open up bore Φ 350- Φ's 450 or so at the top of the position of unit centre or draft tube cone on pump turbine top cover
Hole, press water is introduced.When tail water overpressure is less than the pressure in full factory's low pressure water main, press water passes through filling pipe
Road automatically directly descends draft tube, or directly enter tail water by draft cone top drilling from water pump water wheels top cover into runner envelope
Pipe, it is ensured that pressure is not in negative value to draft tube under any circumstance.Pressure water source is full factory's low pressure water main, full factory's low pressure
The water source of water main is behind storehouse under power station or unit tail lock, and there are more than two intakes in full factory, and water source is reliable,
Its pressure and runner depth of immersion are essentially identical, and caliber is general in DN350~DN500, can be provided completely to tail water guard system
Required pressure water source.Check-valves in the present invention plays a part of check valve, when unit tail water overpressure is low higher than full factory
When pressing water main's pressure, prevent pressure from reaching full factory's low pressure water main.Automatically operated valve ensures only in hydraulic turbine condition
When moisturizing pipeline just devote oneself to work, in pump operating condition, moisturizing pipeline does not work.Such as adjust the pump operating condition power-off tail water protected and calculated
When pressure also is difficult to reach a standard, this valve can not also be set, it is ensured that low pressure event occur regardless of operating mode, and press water can enter tail
Water pipe destroys vacuum, it is ensured that water column is not broken.Press water is introduced draft tube by moisturizing pipeline.
The method of the present invention, step is as follows：When unit is in turbinging, automatically operated valve is opened, and works as tail water
When overpressure is less than the pressure in full factory's low pressure water main, it is automatically replenished by check-valves to draft tube, it is ensured that draft tube
Pressure will not be too low.
The present invention can solve the problem of tail water overpressure is too low well, it is ensured that power plant safety, while can also destroy water
Harmful vortex rope when pump turbine is normally run produced by draft tube, preferable work is played to the stable of hydraulic turbine condition
With.
The present invention is described in detail below by way of specific embodiment：
1. lectotype selection
(1) water consumption is estimated：
Because water is unrestricted, continually, it is not required to consider water problem, and water supply time is shorter, does not influence electricity
Stand other users of low service.
Water supply flow Q=V*S=μ * SQRT (2gh) * (3.14/4*DN^2)
V--- speed (m/s), S--- pipeline area of passages (m2), μ -- discharge coefficient takes 0.8, h-- static pressure (m), g---
Acceleration of gravity, DN-caliber (m)
(2) the choice of diameter：
Moisturizing pipe diameter is typically set to DN350-DN450.
(3) selection of automatically operated valve
Automatically operated valve can be that motor-driven valve can also use hydraulic control valve.
(4) selection of check-valves
For moisturizing smoothly, and prevent low service from producing water hammer, from opening and closing that speed is fast and that non-return effect is good is micro-
Hinder slow-closure type valve.
(5) pressure wave stops valve (safety valve) in advance
Because feedwater is slowly carried out with cutting off the water supply, it will not be mutated, water hammer will not be excessive.But to prevent contingency from being supplied in low pressure
Water system produces water hammer, then in addition to aeration valve is installed additional on full factory's low pressure water main, also needs to install additional pressure wave and stops valve (safety in advance
Valve), it, which sluices, is directly discharged into sump, bore DN100 or so, and configuration number can be true according to low pressure feed pipe deployment scenarios
It is fixed, nor affect on drainage system safety.
(6) aeration valve
There is negative pressure to prevent low pressure from supplying water, aeration valve, bore DN100 or so can be arranged, configuration number can be according to low pressure
Feed pipe deployment scenarios are determined.
2. system G- Design
Enter draft cone from full factory's low pressure water main water intaking through hand-operated valve, automatically operated valve, check-valves, hand-operated valve
Top.
3. equipment is arranged
It is arranged according to power station situation, it is convenient for maintenance, necessary service valve need to be increased on pipeline.Pipe-line system cloth
Put no particular/special requirement.
By using above-mentioned technical proposal disclosed by the invention, following beneficial effect has been obtained：
The present invention can solve the problem of hydroenergy storage station transient process unit pressure in draft tube is too low well, it is ensured that electricity
Stand safe, while harmful vortex rope when pump turbine is normally run produced by draft tube can be also destroyed, to hydraulic turbine condition
It is stable to play preferable effect.Design of the present invention is simple and clear, and investment is relatively saved, economical and practical.Solve for many years
Perplex the technical problem of industry, it is to avoid arranged very much using what pump turbine water intake ball valve was shut down after load rejection
Apply, it is ensured that power plant safety.
Described above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
Depending on protection scope of the present invention.
Claims (9)
1. a kind of hydroenergy storage station transient process unit draft tube malleation ensures system, including pump turbine runner envelope and tail
Water cone pipe, it is characterised in that opened on the top cover of pump turbine at the top of the position of unit centre or the draft tube cone
Provided with the hole that bore is Φ 350- Φ 450, moisturizing pipeline is connected with the hole, the other end of the moisturizing pipeline and full factory are low
Press water main's connection, on the moisturizing pipeline from full factory's low pressure water main junction along moisturizing water (flow) direction successively
It is provided with first manual valve, check-valves and the second hand-operated valve；Full factory's low pressure water main is upper to be connected from the moisturizing pipeline
The inverse water (flow) direction in the place of connecing is disposed with pressure wave and stops valve and aeration valve in advance.
2. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
It is derived from the water source of, full factory's low pressure water main under power station behind storehouse or unit tail lock, full factory's low pressure supplies water total
The intake that pipe is used to fetch water from water source provided with two or more, the caliber of full factory's low pressure water main for DN350~
DN500。
3. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
In being additionally provided with automatically operated valve on the pipeline between the first manual valve and the check-valves on the moisturizing pipeline.
4. hydroenergy storage station transient process unit draft tube malleation according to claim 3 ensures system, its feature exists
In the automatically operated valve selects motor-driven valve or hydraulic control valve.
5. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
In being connected with multiple moisturizing pipelines on full factory's low pressure water main, each moisturizing pipeline is connected to an institute
State on hole.
6. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
In the hole first choice is opened at the top of the draft tube cone.
7. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
In the caliber of the moisturizing pipeline is DN350~DN 450；The check-valves is from opening and closing that speed is fast and that non-return effect is good is micro-
Hinder slow-closure type valve；The drainage gallery that the pressure wave stops valve in advance is connected with sump.
8. hydroenergy storage station transient process unit draft tube malleation according to claim 1 ensures system, its feature exists
In the pressure wave stops valve and stops valve in advance from bore for DN100 pressure wave in advance, and the aeration valve is DN100's from bore
Aeration valve.
9. a kind of any described hydroenergy storage station transient process unit draft tube malleations of application claim 1-8 ensure system
Realize the method that unit draft tube malleation ensures, it is characterised in that comprise the following steps：
Unit is in turbinging or during non-hydraulic turbine condition, when pressure in draft tube is less than the pressure in moisturizing pipeline
When, press water directly descends tail water from water pump water wheels top cover perforate into runner envelope automatically from full factory's low pressure water main through moisturizing pipeline
Pipe directly enters draft tube by draft tube cone top drilling, it is ensured that pressure is not in negative to draft tube under any circumstance
Value；When unit pressure in draft tube is higher than moisturizing manifold pressure, check-valves plays a part of check valve, prevents in draft tube
Press water is reached in full factory's low pressure water main；
When being provided with automatically operated valve on the pipeline between the first manual valve and the check-valves on moisturizing pipeline, water
The automatically operated valve is opened during turbine operating mode, and the automatically operated valve is closed during non-hydraulic turbine condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710334068.7A CN106988955A (en) | 2017-05-12 | 2017-05-12 | Hydroenergy storage station transient process unit draft tube malleation ensures system and method |
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| CN201710334068.7A CN106988955A (en) | 2017-05-12 | 2017-05-12 | Hydroenergy storage station transient process unit draft tube malleation ensures system and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109268200A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine fly ease transient process dynamic characteristic and inner flowing characteristic analysis method |
| CN109271684A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine removal of load process Dynamic Characteristics Analysis Method |
| CN110454314A (en) * | 2019-07-10 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | A kind of modular high-precision Calculations of Hydraulic Transient prediction technique |
| CN110805007A (en) * | 2019-10-16 | 2020-02-18 | 中国电建集团华东勘测设计研究院有限公司 | Safe and reliable factory-wide public water supply method and system |
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| CN109268200A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine fly ease transient process dynamic characteristic and inner flowing characteristic analysis method |
| CN109271684A (en) * | 2018-08-29 | 2019-01-25 | 哈尔滨工业大学 | It is a kind of for pump turbine removal of load process Dynamic Characteristics Analysis Method |
| CN109271684B (en) * | 2018-08-29 | 2022-04-05 | 哈尔滨工业大学 | Dynamic characteristic analysis method for water pump turbine in load shedding process |
| CN110454314A (en) * | 2019-07-10 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | A kind of modular high-precision Calculations of Hydraulic Transient prediction technique |
| CN110805007A (en) * | 2019-10-16 | 2020-02-18 | 中国电建集团华东勘测设计研究院有限公司 | Safe and reliable factory-wide public water supply method and system |
| CN110805007B (en) * | 2019-10-16 | 2022-04-08 | 中国电建集团华东勘测设计研究院有限公司 | Whole-plant public water supply method and system |
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Application publication date: 20170728 |