CN105201737A - Hydraulic auxiliary adjusting system of small-size hydropower station - Google Patents
Hydraulic auxiliary adjusting system of small-size hydropower station Download PDFInfo
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- CN105201737A CN105201737A CN201510675669.5A CN201510675669A CN105201737A CN 105201737 A CN105201737 A CN 105201737A CN 201510675669 A CN201510675669 A CN 201510675669A CN 105201737 A CN105201737 A CN 105201737A
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- valve
- pressure
- hydropower station
- pressure regulator
- regulator valve
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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
Abstract
The invention relates to a hydraulic auxiliary adjusting system of a small-size hydropower station. The hydraulic auxiliary adjusting system comprises a unit speed regulator, a brake device, a pressure regulating valve and a speed regulator oil-pressure device, wherein a non-driving end of a unit main shaft is provided with the brake device; the brake device is driven by a brake hydraulic cylinder; the brake hydraulic cylinder is connected to the speed regulator oil-pressure device through a pipeline; a water inlet of a unit volute is provided with the pressure regulating valve; the pressure regulating valve is provided with a pressure regulating hydraulic cylinder; and the pressure regulating hydraulic cylinder is connected to the speed regulator oil-pressure device through a pipeline. According to the hydraulic auxiliary adjusting system, a mechanical auxiliary system of the hydropower station is subjected to optimal design by taking the speed regulator as the center, and an oil supply system is commonly used, so that the system is simplified, the operation is convenient and the system is safe and reliable; the investment cost is reduced; and the whole operation control capability of a unit is improved and the automatic control function of the unit is realized.
Description
Technical field
The invention belongs to hydroelectric field, especially a kind of small hydropower station hydraulic pressure auxiliary adjustment system.
Background technique
The skidding of domestic and international Conventional compact Hydropower Plant all adopts 0.7MPa low-pressure compressed air system to be braked by flywheel substantially, existing braking system needs to design a set of low pressure gas system, comprising air compressor, gas holder, moisture trap, valve, pipeline and control system etc., total system is comparatively complicated, and existing problems hidden danger is more.
The water inlet gate valve of Conventional compact power station use both at home and abroad at present, its flap is straight line motion, generally adopts motorized motions, but the inlet valve of adapted motorized motions head in use, often there is the problems such as steering force is inadequate, cause inlet valve open and close difficulty, affect the safe operation in power station.
For the set lubricating oil system that can not meet self-circulation lubricating, adopt top petrol tank to carry out fuel feeding by gravity to users such as bearings under normal circumstances, this system comprises oil sump tank, oil pump, oil purifier, cooler, gravity tank, valve and pipeline etc.
And for the water power plant of long pressure diversion system, being generally restriction hydraulic pressure rises and all will arrange surge shaft, and the civilwork engineering quantity of surge shaft is large, and the duration is longer, and cost is higher, and some special topography conditions also cannot build surge shaft.
Through retrieval, find the technology of publication of following near field:
A kind of water power plant pressure regulator valve hydraulic control system (CN203847321U), comprise oil source apparatus, speed regulator controlling device, stator shutoff control unit, guide vane servomotor, pressure regulator valve control gear and pressure regulator valve servomotor, oil source apparatus is connected with stator shutoff control unit, pressure regulator valve control gear respectively, speed regulator controlling device is connected with stator shutoff control unit, guide vane servomotor respectively, stator shutoff control unit is connected with guide vane servomotor, pressure regulator valve control gear respectively, and pressure regulator valve control gear is connected with pressure regulator valve servomotor.When turbine-generator units emergency shutdown or removal of load, guide vane servomotor can be closed rapidly by stator shutoff control unit, and pressure regulator valve servomotor opened by pressure regulator valve control gear simultaneously; When emergency shutdown resets or removal of load completes, pressure regulator valve servomotor cuts out under the effect of hydraulic control valve, achieves the function that pressure regulator valve servomotor " opens fast and cuts out at a slow speed ".
Comparative analysis, there is bigger difference in the technological scheme of above public technology and present patent application, and the effect reached is not identical yet.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, provide that a kind of structure is simple, rationally distributed, good reliability, be easy to the small hydropower station hydraulic pressure auxiliary adjustment system safeguarded.
The present invention solves its technical problem and takes following technological scheme to realize:
A kind of small hydropower station hydraulic pressure auxiliary adjustment system, is characterized in that: comprise guide vane servomotor, governor oil pressure device, pressure regulator valve and braking device,
Be provided with a guide vane servomotor at the control ring place of unit, this guide vane servomotor is connected to governor oil pressure device by pipeline;
Be provided with a pressure regulator valve at the spiral case water intake of unit, this pressure regulator valve is connected to governor oil pressure device by pipeline;
Be provided with a braking device at the flywheel place of unit, braking device is connected to governor oil pressure device by pipeline.
And governor oil pressure device is also connected with an inlet valve servomotor by fuel supply line, the fuel supply line of inlet valve servomotor also have a branch line be connected on the pipeline between pressure regulator valve and governor oil pressure device.
And the concrete structure of governor oil pressure device comprises main control valve, bladder type hydropneumatic accumulator and oil supply system, and the filler opening of main control valve connects bladder type hydropneumatic accumulator by pipeline, and this bladder type hydropneumatic accumulator is connected to oil supply system.
And, at the filler opening of main control valve, one accidental shutdown solenoid valve is installed.
And the drive end of described guide vane servomotor is provided with a locking solenoid valve;
And pressure regulator valve adopts pressure regulation oil hydraulic cylinder to be directly with ovable valve stem to move forward into row switch motion.
And pressure regulator valve carries out two sections of cut outs, the position of pressure regulator valve segmentation flex point and the stroke of pressure regulator valve adjustable at the scene.
And, the concrete structure of braking device is: be provided with a brake flywheel at the anti-drive end of set main shaft, this brake flywheel side outer rim is connected with braking device, and this braking device is connected with a brake electric magnet valve, brake electromagnetic valve braking device locking braking flywheel.
Advantage of the present invention and good effect are:
1, the oil gear of native system adopts bladder type hydropneumatic accumulator, decreases the gas system of oil gear being carried out to tonifying Qi, simplifies system.
2, the pressure regulator valve of native system adopts hydraulic control open and close, replaces electrical header operation, solves inlet valve open and close difficult problem.
The pressure oil-source unification of water turbine movable guide vane operating device, pressure regulator valve, inlet valve and braking device 3, in native system is provided by the oil gear of speed regulator, carry out brand-new design by braking device and change oil pressure automatic resetting into by pneumatic, ensure enough steering forces.
4, the present invention is optimized design to the mechanical assistance system in power station centered by speed regulator, shares an oil supply system, simplifies system, and easy to operate, safely, reliably, decrease cost of investment, improve unit overall operation control ability, achieve unit automatic control function.
Accompanying drawing explanation
Fig. 1 is present system schematic diagram;
Fig. 2 is brake device structure schematic diagram;
Fig. 3 is main control valve structure for amplifying schematic diagram.
Attached number in the figure representative: 1 spiral case, 2 locking solenoid valve, 3 pressure regulator valves, 4 accidental shutdown solenoid valves, 5 main control valves, 6 bladder type hydropneumatic accumulators, 7 oil supply systems, 8 inlet valve servomotors, 9 braking devices, 10 guide vane servomotors, 11 movable guide vanes, 12 brake electric magnet valves, 13 flywheels.
Embodiment
Below in conjunction with accompanying drawing, also by specific embodiment, the invention will be further described, and following examples are descriptive, are not determinate, can not limit protection scope of the present invention with this.
A kind of small hydropower station hydraulic pressure auxiliary adjustment system, comprises guide vane servomotor 10, governor oil pressure device, pressure regulator valve 3, braking device 9;
Be provided with the control ring of movable guide vane 11 formation be circular layout in the spiral case 1 of machine unit speed regulating device, this control ring is provided with a guide vane servomotor 10, and guide vane servomotor is connected to governor oil pressure device by pipeline, carries out speed regulating control according to working condition; The drive end of guide vane servomotor is provided with a locking solenoid valve 2, can brake as required to guide vane servomotor;
Be provided with a pressure regulator valve 3 at the water intake of spiral case, this pressure regulator valve moves forward into row switch motion by pressure regulation oil hydraulic cylinder band ovable valve stem, and this pressure regulation oil hydraulic cylinder is connected to governor oil pressure device by pipeline; Pressure regulator valve adopts oil hydraulic cylinder directly to move forward into the switch motion of row pressure regulator valve with ovable valve stem, the operation oil sources of pressure regulator valve is from governor oil pressure device, and the pressure regulator valve described in the present embodiment adopts fluid pressure linkage to control, two sections of closedowns can be carried out, the position of segmentation flex point and the stroke of pressure regulator valve can be adjusted at the scene, thus make adjustment process more close to best Closing Law;
Also be provided with a braking device 9 at the non-transmision end of set main shaft, this braking device is for controlling the start and stop state of unit, and braking device is driven by brake-fluid cylinder pressure, and brake-fluid cylinder pressure is connected to governor oil pressure device by pipeline;
The concrete structure of braking device is see shown in accompanying drawing 2, at the anti-drive end of set main shaft, one brake flywheel 13 is installed, this brake flywheel side outer rim is connected with braking device, this braking device is connected with a brake electric magnet valve 12, brake electric magnet valve can control braking device locking braking flywheel makes it brake, thus control machine unit speed regulating device braking, achieve unit automatic control function.
Governor oil pressure device is also connected with an inlet valve servomotor 8 by fuel supply line and to this inlet valve servomotor fuel feeding, this inlet valve servomotor of the present embodiment is straight-cylinder formula.The fuel supply line of inlet valve servomotor also has a branch line be connected on the pipeline between pressure regulator valve and main control valve, make pressure regulator valve and the action of inlet valve servomotor have linkage lock function further, when pressure regulator valve tripping, unit can only slowly closing; Avoid the safety of pressure regulator valve tripping fault effects diversion pipeline.
The concrete structure of governor oil pressure device comprises main control valve 5, bladder type hydropneumatic accumulator 6 and oil supply system 7, and the filler opening of main control valve connects bladder type hydropneumatic accumulator by pipeline, and this bladder type hydropneumatic accumulator is connected to oil supply system;
The concrete structure of main control valve is see shown in accompanying drawing 3, the outlet of main control valve is divided into multiple adjustable dividing potential drop outlet, the outlet of the plurality of dividing potential drop is connected to the opening/closing two ends of guide vane servomotor, the opening/closing two ends of pressure regulator valve oil hydraulic cylinder, the opening/closing two ends of brake-fluid cylinder pressure, the opening/closing two ends of inlet valve servomotor, by the unlatching or the closedown that regulate main control valve can control dividing potential drop outlet, thus the action of synchronization control guide vane servomotor, pressure regulator valve, braking device and inlet valve servomotor;
In order to ensure Security, be provided with an accidental shutdown solenoid valve 4 at the filler opening of main control valve, this accidental shutdown solenoid valve can cut off the fuel feeding to main control valve in time.
In the present embodiment, can place nearby by generator after the pressurized tank of oil supply system and oil sump tank combine, solve in the past in scheme civil engineering cost high while, also the space that plant and equipment is arranged greatly has been saved, and tank body pressure is completed by a miniature movable type low pressure air compressor, simplifies system, decrease cost of investment, improve unit overall operation control ability.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope not departing from the present invention and claims, various replacement, change and amendment are all possible, therefore, scope of the present invention is not limited to the content disclosed in embodiment and accompanying drawing.
Claims (8)
1. a small hydropower station hydraulic pressure auxiliary adjustment system, is characterized in that: comprise guide vane servomotor, governor oil pressure device, pressure regulator valve and braking device,
Be provided with a guide vane servomotor at the control ring place of unit, this guide vane servomotor is connected to governor oil pressure device by pipeline;
Be provided with a pressure regulator valve at the spiral case water intake of unit, this pressure regulator valve is connected to governor oil pressure device by pipeline;
Be provided with a braking device at the flywheel place of unit, braking device is connected to governor oil pressure device by pipeline.
2. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 1, it is characterized in that: governor oil pressure device is also connected with an inlet valve servomotor by fuel supply line the fuel supply line of inlet valve servomotor also having a branch line be connected on the pipeline between pressure regulator valve and governor oil pressure device.
3. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 1, it is characterized in that: the concrete structure of governor oil pressure device comprises main control valve, bladder type hydropneumatic accumulator and oil supply system, the filler opening of main control valve connects bladder type hydropneumatic accumulator by pipeline, and this bladder type hydropneumatic accumulator is connected to oil supply system.
4. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 3, is characterized in that: be provided with an accidental shutdown solenoid valve at the filler opening of main control valve.
5. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 1, is characterized in that: the drive end of described guide vane servomotor is provided with a locking solenoid valve;
6. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 1, is characterized in that: pressure regulator valve adopts pressure regulation oil hydraulic cylinder to be directly with ovable valve stem to move forward into row switch motion.
7. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 6, is characterized in that: pressure regulator valve carries out two sections of cut outs, the position of pressure regulator valve segmentation flex point and the stroke of pressure regulator valve adjustable at the scene.
8. small hydropower station hydraulic pressure auxiliary adjustment system according to claim 1, it is characterized in that: the concrete structure of braking device is: at the anti-drive end of set main shaft, one brake flywheel is installed, this brake flywheel side outer rim is connected with braking device, this braking device is connected with a brake electric magnet valve, brake electromagnetic valve braking device locking braking flywheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675669.5A CN105201737A (en) | 2015-10-19 | 2015-10-19 | Hydraulic auxiliary adjusting system of small-size hydropower station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510675669.5A CN105201737A (en) | 2015-10-19 | 2015-10-19 | Hydraulic auxiliary adjusting system of small-size hydropower station |
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| CN105201737A true CN105201737A (en) | 2015-12-30 |
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| CN201510675669.5A Pending CN105201737A (en) | 2015-10-19 | 2015-10-19 | Hydraulic auxiliary adjusting system of small-size hydropower station |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109209974A (en) * | 2018-10-26 | 2019-01-15 | 联峰钢铁（张家港）有限公司 | A kind of air compressor guide vane control system |
| CN109751177A (en) * | 2018-01-22 | 2019-05-14 | 天津市元远合成科技发展有限公司 | A method of improving governor main control valve working performance |
Citations (7)
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| JPS5627076A (en) * | 1979-08-09 | 1981-03-16 | Toshiba Corp | Controller for hydraulic machinery |
| CN201209703Y (en) * | 2008-06-20 | 2009-03-18 | 湖北洪城通用机械股份有限公司 | Full oil pressure regulation valve |
| CN201730732U (en) * | 2010-08-13 | 2011-02-02 | 天津市科音自控设备有限公司 | Control type intelligent speed governor of sectionalized closing and pressure regulating valve |
| CN103850870A (en) * | 2012-12-03 | 2014-06-11 | 天津市科音自控设备有限公司 | Depressurizing brake device used for high-oil-pressure speed adjusting system |
| CN203847321U (en) * | 2014-05-29 | 2014-09-24 | 华自科技股份有限公司 | Hydraulic control system of hydropower station pressure regulating valve |
| CN203978966U (en) * | 2014-07-10 | 2014-12-03 | 杭州三和电控设备有限公司 | A kind of speed regulator system of novel high oil pressure band pressure regulator valve |
| CN205172802U (en) * | 2015-10-19 | 2016-04-20 | 天津电气科学研究院有限公司 | Supplementary governing system of small hydropower station hydraulic pressure |
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2015
- 2015-10-19 CN CN201510675669.5A patent/CN105201737A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627076A (en) * | 1979-08-09 | 1981-03-16 | Toshiba Corp | Controller for hydraulic machinery |
| CN201209703Y (en) * | 2008-06-20 | 2009-03-18 | 湖北洪城通用机械股份有限公司 | Full oil pressure regulation valve |
| CN201730732U (en) * | 2010-08-13 | 2011-02-02 | 天津市科音自控设备有限公司 | Control type intelligent speed governor of sectionalized closing and pressure regulating valve |
| CN103850870A (en) * | 2012-12-03 | 2014-06-11 | 天津市科音自控设备有限公司 | Depressurizing brake device used for high-oil-pressure speed adjusting system |
| CN203847321U (en) * | 2014-05-29 | 2014-09-24 | 华自科技股份有限公司 | Hydraulic control system of hydropower station pressure regulating valve |
| CN203978966U (en) * | 2014-07-10 | 2014-12-03 | 杭州三和电控设备有限公司 | A kind of speed regulator system of novel high oil pressure band pressure regulator valve |
| CN205172802U (en) * | 2015-10-19 | 2016-04-20 | 天津电气科学研究院有限公司 | Supplementary governing system of small hydropower station hydraulic pressure |
Non-Patent Citations (1)
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| 许庆进，麻波: "小型水电站辅助设备优化设计研究", 《第十九次中国水电设备学术讨论会论文集》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109751177A (en) * | 2018-01-22 | 2019-05-14 | 天津市元远合成科技发展有限公司 | A method of improving governor main control valve working performance |
| CN109209974A (en) * | 2018-10-26 | 2019-01-15 | 联峰钢铁（张家港）有限公司 | A kind of air compressor guide vane control system |
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| Governor et al. | Advances in Machinery, Materials Science and Engineering Application IX 327 M. Chen et al.(Eds.) 2023 The Authors. This article is published online with Open Access by IOS Press and distributed under the terms of the Creative Commons Attribution Non-Commercial License 4.0 (CC BY-NC 4.0). |
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Application publication date: 20151230 |
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