CN209510513U - A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism - Google Patents
A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism Download PDFInfo
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- CN209510513U CN209510513U CN201920084876.7U CN201920084876U CN209510513U CN 209510513 U CN209510513 U CN 209510513U CN 201920084876 U CN201920084876 U CN 201920084876U CN 209510513 U CN209510513 U CN 209510513U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 230000008676 import Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
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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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- Control Of Water Turbines (AREA)
- Hydraulic Turbines (AREA)
Abstract
The utility model relates to a kind of accident control devices with guide vanes of water turbine hydraulic closing mechanism.Including emergency distributing valve and guide vane servomotor oil cylinder；Improvement is: guide vanes of water turbine hydraulic closing mechanism is additionally arranged between emergency distributing valve and guide vane servomotor oil cylinder；Guide vanes of water turbine hydraulic closing mechanism includes high-pressure oil pump, check valve, shut-off valve, fuel-displaced union, oil return union and four high pressure valves.When unit is overrun, governor failure, there is misaction again in emergency distributing valve, close associated high voltage valve, the oil pipe that cutting emergency distributing valve is connected with guide vane servomotor oil cylinder, opens the high pressure valve on the flowline and oil return pipe of high-pressure oil pump, starts high-pressure oil pump, high pressure oil is fed into guide vane servomotor oil cylinder and closes chamber, realizes guide vane emergency cut-off.The utility model realizes emergency cut-off guide vane, does not need to increase control element, and simple to operate while simple and compact for structure, pipeline is few, and manufacturing cost is low, and system effectiveness is high.
Description
Technical field
The utility model belongs to technical field of hydroelectric generation, and in particular to guide vanes of water turbine shutoff operation device.
Background technique
Turbine-generator units removal of load for some reason, and water flow can not be truncated in speed-regulating system tripping at this time, water distributor, cause
Unit may cross the subsequent up to runaway speed of continuing rising of rated speed.Unit flies ease for a long time will lead to unit damage.Unit is anti-
The device for flying ease usually has: emergency distributing valve, main valve (barrel valve), weight, stop gate etc..
Emergency distributing valve is the execution machine that guide vane servomotor is closed in direct operation independently of governor main control valve
Structure, it is serially connected on the oil pipe line between governor main control valve and guide vane servomotor.Under normal circumstances, emergency distributing valve does not rise
Effect makes governor main control valve be in connected state with the operating line for leading to guide vane servomotor;When unit due to
Certain reason, revolving speed rise to 115% rated speed, and when main control valve tripping, and it is dynamic that emergency distributing valve receives overspeed protection signal
Make, governor is cut off, the pressure oil in oil system directly operates the servomotor of water distributor, emergency cut-off water distributor.But
If overspeed protection device failure or other malfunctions, emergency distributing valve is caused the extreme case of tripping also occur, unit will
It will appear winged anecdote event.
Barrel valve is typically mounted between unit fixed guide vane and movable guide vane, by hydraulic operation.When unit operates normally
It is raised on top cover, when accident occurs for unit or unit is shut down for a long time, it is fallen, unit spiral case is functioned similarly to
Water flow is cut off in the effect of ring for the sealing liquid when pressure maintaining pours.Due to cutting off water flow when the device can move water, it is possible to play
The effect of unit anti-runaway, the disadvantage is that cost is expensive, (turbine stay ring, top cover, base ring, spiral case, pit liner all obtain increased in size, water
Therefore turbine gross weight must increase 10%~15%, workshop size also will increase)；In addition, its operation it is synchronous also bad solve (it by
More servomotor operations).This mode uses in Man Wan, Xiao Langdi, a small number of power stations such as make a pilgrimage to a temple on a famous mountain greatly.
Main valve is typically mounted between hydroturbine water intake mouth penstock and spiral case, can move the water that water cutting enters spiral case
Stream, plays the role of unit anti-runaway.But large-scale Kaplan turbine, tubular-Francis turbine be since its admission section is larger, no
It is uneconomical convenient for setting main valve or setting main valve, also just lose this anti-runaway measure.
Weight is commonly used in bulb-type tubular hydro set, is hung in control ring, can when speed-regulating system breaks down guide vane closing,
Play the role of anti-runaway, smaller scope of application.
Stop gate is set to water inlet, can move underwater door.According to the related specification requirement of turbine-generator units, it is answered
It is able to satisfy the time limit requirement closed in 5 min.If unit water inlet passage height is higher, technically it is difficult to meet 5 min
Time requirement.Simultaneously for low-head hydroelectric plant, import stop gate can not also be set or even should not be arranged.
For the turbine-generator units of the anti-runaway devices such as not set main valve (barrel valve), weight, stop gate, can adopt
The hydraulic closing device described in this right substitutes above-mentioned apparatus.
Utility model content
The utility model main purpose is for not set main valve (barrel valve), and not set diversion system import is quick
The turbine-generator units of gate can be superimposed extreme in hydrogovernor failure, the failure of emergency distributing valve tripping simultaneously
In the case of, the participation of any Element of automatic control is not needed, a kind of purely manual hydraulic pass of high reliability guide vanes of water turbine is provided
Close device.
A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism, including emergency distributing valve 10 and guide vane connect
Power device oil cylinder 11；The emergency distributing valve 10 is two six flow-through reversal valves, and emergency distributing valve 10 is equipped with pressure oil port P, adjusts
Fast device main control valve closes accent A, governor main control valve opens accent B, guide vane servomotor oil cylinder closes accent C, guide vane connects
Power device oil cylinder opens accent D and oil return inlet T；The guide vane servomotor oil cylinder 11 is ram cylinder, including cylinder body and piston,
It is characterized in that:
It further include the guide vanes of water turbine hydraulic closing mechanism being made of high-pressure oil pump 1, the oil outlet of high-pressure oil pump 1 is successively gone here and there
Join check valve 2, shut-off valve 3 and fuel-displaced union 4；The oil return opening of high-pressure oil pump is equipped with oil return union 5；
The guide vane servomotor of the emergency distributing valve 10 closes accent C and connects the second high pressure valve 7, and guide vane servomotor is opened
Accent D connects third high pressure valve 8；The outlet of second high pressure valve 7 is divided into two-way by tee tube, the first high pressure of connecting all the way
Valve 6, the import of the first high pressure valve 6 are connected to the oil outlet of high-pressure oil pump by fuel-displaced union, and another way is connected to described lead
The closing chamber of leaf servomotor oil cylinder 11；The outlet of third high pressure valve 8 is divided into two-way by tee tube, the 4th high pressure of connecting all the way
Valve 9, the outlet of the 4th high pressure valve 9 are connected to the oil return opening of high-pressure oil pump by oil return union, and another way is connected to described lead
The unlatching chamber of leaf servomotor oil cylinder 11；
When water turbine set works normally, the second high pressure valve 7 and third high pressure valve 8 are normally opened, the first high pressure valve 6 and the 4th high pressure
Valve 9 is normally closed；
When water turbine set revolving speed rises to 115% rated speed, and tripping occurs in emergency distributing valve 10, then it is turned off manually
Second high pressure valve 7 and third high pressure valve 8 cut off the oil pipe line of emergency distributing valve 10 and guide vane servomotor oil cylinder 11, meanwhile, it opens
First high pressure valve 6 and the 4th high pressure valve 9；The import of the first high pressure valve 6 is set to be connected to the fuel-displaced of high-pressure oil pump by fuel-displaced union
Mouthful, the outlet of the 4th high pressure valve 9 is connected to the oil return opening of high-pressure oil pump by oil return union, starts high-pressure oil pump 1, by high pressure oil
The closing chamber of guide vane servomotor oil cylinder 11 is fed, realizes that guide vanes of water turbine is closed.
The technical solution further limited is as follows:
The high-pressure oil pump 1 is vertical hydropower generator top rotor oil pump.
First high pressure valve 6, the second high pressure valve 7, third high pressure valve 8 and the 4th high pressure valve 9 are high-pressure ball valve.
The advantageous effects of the utility model embody in the following areas:
1) the utility model closes device for guide vanes of water turbine, can extend to all types of power stations, anti-as unit
Fly ease protection.
2) when unit operates normally, the present apparatus does not work, when governor failure, emergency distributing valve tripping etc. occurs in unit
When accident situation, and again without other anti-runaway measures such as main valve (barrel valve), weight, stop gate when, the device is manually operated,
By high-pressure oil pump, high pressure oil is fed directly into guide vane servomotor and closes chamber, emergency cut-off guide vane.
3) the utility model, which only passes through, increases Moveable high-pressure oil pump device and external oil collecting pipeline, realizes that emergency cut-off is led
Leaf does not need to increase control element, and simple to operate while simple and compact for structure, pipeline is few, and manufacturing cost is low, system effect
Rate is high.
4) by the high-pressure ball valve on pipeline, the investment and excision of the present apparatus are realized, mutually not with the normal speed-regulating system of unit
Interference, guarantees the safety of entire unit.
5) after being equipped with the hydraulic closing device of guide vanes of water turbine described in the utility model, main valve (cartridge type can be no longer set
Valve), weight, other anti-runaway measures such as stop gate, thus substantially cost saving.
Such as Anhui power station, the axial-flow rotary propeller type turbine-generator units equipped with 2 single machine 10MW, using the utility model institute
After stating device, to eliminate intake tunnel import stop gate, reduce investment outlay about 5,000,000 yuan.
Detailed description of the invention
Fig. 1 is that the utility model connects system diagram.
Serial number in upper figure: high-pressure oil pump 1, check valve 2, shut-off valve 3, fuel-displaced union 4, oil return union 5, the first high pressure
Valve 6, the second high pressure valve 7, third high pressure valve 8, the 4th high pressure valve 9, emergency distributing valve 10, guide vane servomotor oil cylinder 11.
Specific embodiment
With reference to the accompanying drawing, by embodiment, the utility model is further described.
Referring to Fig. 1, a kind of accident control device with guide vanes of water turbine hydraulic closing mechanism includes emergency distributing valve 10
With guide vane servomotor oil cylinder 11；The emergency distributing valve 10 is two six flow-through reversal valves, and emergency distributing valve 10 is equipped with pressure
Hydraulic fluid port P, governor main control valve close accent A, governor main control valve opens accent B, guide vane servomotor oil cylinder closes accent
C, guide vane servomotor oil cylinder opens accent D and oil return inlet T；The guide vane servomotor oil cylinder 11 is ram cylinder, including cylinder body
And piston, improvement are:
It further include guide vanes of water turbine hydraulic closing mechanism；Guide vanes of water turbine hydraulic closing mechanism includes high-pressure oil pump 1, unidirectional
Valve 2, shut-off valve 3, fuel-displaced union 4 and oil return union 5；High-pressure oil pump 1 is vertical hydropower generator top rotor oil pump,
Common model GL type.The oil outlet of high-pressure oil pump 1 is sequentially connected in series check valve 2, shut-off valve 3 and fuel-displaced union 4；High-pressure oil pump
Oil return opening be equipped with oil return union 5.
The guide vane servomotor of the emergency distributing valve 10 closes accent C and connects the second high pressure valve 7, and guide vane servomotor is opened
Accent D connects third high pressure valve 8；The outlet of second high pressure valve 7 is divided into two-way by tee tube, the first high pressure of connecting all the way
Valve 6, the import of the first high pressure valve 6 are connected to the oil outlet of high-pressure oil pump by fuel-displaced union, and another way is connected to described lead
The closing chamber of leaf servomotor oil cylinder 11；The outlet of third high pressure valve 8 is divided into two-way by tee tube, the 4th high pressure of connecting all the way
Valve 9, the outlet of the 4th high pressure valve 9 are connected to the oil return opening of high-pressure oil pump by oil return union, and another way is connected to described lead
The unlatching chamber of leaf servomotor oil cylinder 11.
First high pressure valve 6, the second high pressure valve 7, third high pressure valve 8 and the 4th high pressure valve 9 are high-pressure ball valve.
The oil pressure P of high-pressure oil pump 11Value is equal to the nominal operation oil pressure of guide vane servomotor oil cylinder 11.
High-pressure oil pump output oil amount
In formula, n is the number of guide vane servomotor；S is guide vane servomotor piston stroke, mm；D is servomotor diameter, mm；T
Allow runing time, s under runaway speed for hydrogenerator；Generally 120s.
The pressure value P of the high-pressure ball valve, fuel-displaced union 4 and oil return union 52=P1。
The working principle of accident control device with guide vanes of water turbine hydraulic closing mechanism is described as follows:
When water turbine set works normally, the second high pressure valve 7 and third high pressure valve 8 are normally opened, the first high pressure valve 6 and the 4th high pressure
Valve 9 is normally closed.
When water turbine set revolving speed rises to 115% rated speed, and tripping occurs in emergency distributing valve 10, then it is turned off manually
Second high pressure valve 7 and third high pressure valve 8 cut off the oil pipe line of emergency distributing valve 10 and guide vane servomotor oil cylinder 11, open first
High pressure valve 6 and the 4th high pressure valve 9；The import of the first high pressure valve 6 is set to be connected to the oil outlet of high-pressure oil pump 1 by fuel-displaced union 4,
The outlet of 4th high pressure valve 9 is connected to the oil return opening of high-pressure oil pump 1 by oil return union 5, starts high-pressure oil pump 1, by high pressure oil
The closing chamber of guide vane servomotor oil cylinder 11 is fed, realizes that guide vanes of water turbine is closed.
Claims (3)
1. a kind of accident control device with guide vanes of water turbine hydraulic closing mechanism, including emergency distributing valve (10) and guide vane connect
Power device oil cylinder (11)；The emergency distributing valve (10) is two six flow-through reversal valves, and emergency distributing valve (10) is equipped with pressure oil
Mouth P, governor main control valve close accent A, governor main control valve opens accent B, guide vane servomotor oil cylinder closes accent C,
Guide vane servomotor oil cylinder opens accent D and oil return inlet T；The guide vane servomotor oil cylinder (11) is ram cylinder, including cylinder body
And piston, it is characterised in that:
It further include the guide vanes of water turbine hydraulic closing mechanism being made of high-pressure oil pump (1), the oil outlet of high-pressure oil pump (1) is successively gone here and there
Join check valve (2), shut-off valve (3) and fuel-displaced union (4)；The oil return opening of high-pressure oil pump is equipped with oil return union (5)；
The guide vane servomotor of the emergency distributing valve (10) closes accent C and connects the second high pressure valve (7), and guide vane servomotor is opened
Accent D connects third high pressure valve (8)；The outlet of second high pressure valve (7) is divided into two-way by tee tube, connects first all the way
High pressure valve (6), the import of the first high pressure valve (6) are connected to the oil outlet of high-pressure oil pump, another way connection by fuel-displaced union
The closing chamber of the guide vane servomotor oil cylinder (11)；The outlet of third high pressure valve (8) is divided into two-way by tee tube, goes here and there all the way
Join the 4th high pressure valve (9), the outlet of the 4th high pressure valve (9) is connected to the oil return opening of high-pressure oil pump by oil return union, separately
It is connected to the unlatching chamber of the guide vane servomotor oil cylinder (11) all the way.
2. a kind of accident control device with guide vanes of water turbine hydraulic closing mechanism according to claim 1, feature
Be: the high-pressure oil pump (1) is vertical hydropower generator top rotor oil pump.
3. a kind of accident control device with guide vanes of water turbine hydraulic closing mechanism according to claim 1, feature
Be: first high pressure valve (6), the second high pressure valve (7), third high pressure valve (8) and the 4th high pressure valve (9) are smash
Valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084876.7U CN209510513U (en) | 2019-01-18 | 2019-01-18 | A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920084876.7U CN209510513U (en) | 2019-01-18 | 2019-01-18 | A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism |
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| Publication Number | Publication Date |
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| CN209510513U true CN209510513U (en) | 2019-10-18 |
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| CN201920084876.7U Active CN209510513U (en) | 2019-01-18 | 2019-01-18 | A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519324A (en) * | 2019-01-18 | 2019-03-26 | 安徽省水利水电勘测设计院 | A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism |
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2019
- 2019-01-18 CN CN201920084876.7U patent/CN209510513U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109519324A (en) * | 2019-01-18 | 2019-03-26 | 安徽省水利水电勘测设计院 | A kind of accident control device with guide vanes of water turbine hydraulic closing mechanism |
| CN109519324B (en) * | 2019-01-18 | 2024-01-16 | 安徽省水利水电勘测设计研究总院有限公司 | Accident control device with hydraulic closing mechanism of guide vane of water turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 230088 No. 185 Haitang Road, hi tech Zone, Anhui, Hefei Patentee after: Anhui water resources and Hydropower Survey, design and Research Institute Co.,Ltd. Address before: 230088 No. 185 Haitang Road, hi tech Zone, Anhui, Hefei Patentee before: ANHUI SURVEY AND DESIGN INSTITUTE OF WATER CONSERVANCY AND HYDROPOWER |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP03 | Change of name, title or address |
Address after: No. 185 Haitang Road, High tech Development Zone, Hefei City, Anhui Province, 230031 Patentee after: Anhui water conservancy and hydropower survey and design research institute Co.,Ltd. Country or region after: China Address before: 230088 No. 185 Haitang Road, Hefei High-tech Zone, Anhui Province Patentee before: Anhui water resources and Hydropower Survey, design and Research Institute Co.,Ltd. Country or region before: China |
|
| CP03 | Change of name, title or address |