CN103850870A - Depressurizing brake device used for high-oil-pressure speed adjusting system - Google Patents
Depressurizing brake device used for high-oil-pressure speed adjusting system Download PDFInfo
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- CN103850870A CN103850870A CN201210505579.8A CN201210505579A CN103850870A CN 103850870 A CN103850870 A CN 103850870A CN 201210505579 A CN201210505579 A CN 201210505579A CN 103850870 A CN103850870 A CN 103850870A
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- valve
- oil
- depressurizing
- brake
- pressure
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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 relates to a depressurizing brake device used for a high-oil-pressure speed adjusting system. The depressurizing brake device is characterized in that one end of a throttling valve is connected with an energy accumulator while the other end of the same is connected with an oil inlet of a depressurizing valve, an oil outlet of the depressurizing valve is connected with an oil inlet of a brake valve, oil discharging ports of the depressurizing valve and the brake valve are communicated with a loop box respectively, and a piezometer is mounted on a pipeline between the depressurizing valve and the brake valve. The depressurizing brake device has the advantages that the depressurizing brake device is reasonable in design, simple in structure and reliable in use; by adopting high-oil-pressure depressurizing technology, high-oil-pressure pressure oil of the own energy accumulator in the high-oil-pressure speed adjusting system is depressurized to be low-oil-pressure pressure oil suitable for a brake stop device, and a hydraulic station does not need to be independently arranged for the brake stop device, so that power station building investment is effectively reduced, production cost is lowered, and performance-cost ratio is high.
Description
Technical field
The present invention relates to a kind of water power plant decompression braking device, particularly a kind of decompression braking device for high oil pressure speed control system, is applicable to high oil pressure Turbine Governor System.
Background technique
At present, the brake arresting gear of high oil pressure Turbine Governor System is the brake stop hydraulic oil cylinder of installing and using respectively low oil pressure operation (0.7～2.5MPa) in the both sides of turbine shaft.Owing to differing greatly with the oil pressure grade of high oil pressure Turbine Governor System, be necessary for brake stop hydraulic oil cylinder and configure special low oil pressure hydraulic station.This low oil pressure hydraulic station floor space is large, has virtually increased power station investment, has improved cost of production.
Summary of the invention
The present invention provides a kind of reasonable in design for solving the technical problem existing in known technology, uses reliably; can directly from the accumulator of high oil pressure Turbine Governor System, take out the hydraulic oil that pressure rating is 16.0MPa; through decompression after, offer brake arresting gear for high oil pressure
The decompression braking device of system.
The technological scheme that the present invention takes for the technical problem existing in solution known technology is:
For the decompression braking device of high oil pressure speed control system, it is characterized in that: one end of throttle valve is connected with accumulator, the other end of throttle valve is connected with the filler opening of reduction valve, the oil outlet of reduction valve is connected with the filler opening that is connected brake valve, the oil drain out of reduction valve and brake valve is connected with loop case respectively, on the pipeline between reduction valve and brake valve, disposes pressure gauge.
The present invention can also adopt following technological scheme:
Described throttle valve is variable throttling tubular type throttle valve.
Described reduction valve is for leaking reduction valve in direct-acting type.
Described brake valve is electromagnetic direction valve.
Advantage and good effect that the present invention has are: 1, reasonable in design, simple in structure, use reliable.2, because the present invention adopts high oil pressure decompression technology; the low oil pressure pressure oil that the high oil pressure pressure oil decompression of the accumulator of providing for oneself in high oil pressure speed control system is used for the arresting gear that is suitable for braking; and without setting up separately hydraulic station for brake arresting gear; effectively reduce power plant construction investment; reduced cost of production, cost performance is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure: 1. throttle valve, 2. reduction valve, 3. pressure gauge, 4. brake valve.
Embodiment
For further understanding content of the present invention, Characteristic, hereby exemplify following examples, and coordinate accompanying drawing to be described in detail as follows:
As shown in Figure 1, for the decompression braking device of high oil pressure speed control system, one end by throttle valve 1 is connected with accumulator, the other end of throttle valve is connected with the filler opening of reduction valve 2, the oil outlet of reduction valve 2 is connected with the filler opening that is connected brake valve 4, the oil drain out of reduction valve 2 and brake valve 4 communicates with loop case respectively, disposes pressure gauge 3 and form on the pipeline between reduction valve 2 and brake valve 4.
Described throttle valve 1 is variable throttling tubular type throttle valve.Described reduction valve 2 is for supplying to leak reduction valve in direct-acting type.Described brake valve 4 is electromagnetic direction valve.
When use, the present invention is connected to water power plant speed control system.
Working principle of the present invention: the outlet pressure of the flow of throttle valve 1 and reduction valve 2 can
Set up according to actual needs, reduction valve 2 is opened in original state, and, under setting pressure, hydraulic oil can freely flow to the oil outlet of reduction valve 2 from the filler opening of reduction valve 2; In the time that the pressure of the oil outlet of reduction valve 2 reaches setting pressure, control spool and move to control position, and to keep the pressure of the oil outlet of reduction valve 2 be that setting pressure is constant; If due to the effect of external force in reduction valve 2 oil outlet oil circuits, more than the pressure of the oil outlet of reduction valve 2 is elevated to setting pressure, inner guide's fuel feeding promotes reduction valve 2 spools and moves, and the oil outlet of reduction valve 2 and oil sump tank is linked up, till draining to pressure tops out.The pressure relief ranges of reduction valve 2 is that 0.4MPa～2.5MPa is adjustable.Pressure gauge 3 can the post-decompression pressure of direct-detection.
In the time that unit normally moves, reduction valve 2 is opened, brake valve 4 electromagnet dead electricity, oil-feed
Mouth is in closed state, and brake valve 4 oil outlets communicate with brake valve 4 oil drain outs, and braking device is not worked.
In the time of compressor emergency shutdown, brake valve 4 electromagnet excitation tape electricity, oil circuit switches, and brake valve 4 filler openings are opened, and hydraulic oil enters brake valve 4 after reduction valve 2 decompressions, and braking device is devoted oneself to work.
Claims (4)
1. the decompression braking device for high oil pressure speed control system, it is characterized in that: one end of throttle valve (1) is connected with accumulator, the other end of throttle valve is connected with the filler opening of reduction valve (2), the oil outlet of reduction valve (2) is connected with the filler opening that is connected brake valve (4), the oil drain out of reduction valve (2) and brake valve (4) communicates with loop case respectively, on the pipeline between reduction valve (2) and brake valve (4), disposes pressure gauge (3).
2. the decompression braking device for high oil pressure speed control system according to claim 1, is characterized in that: described throttle valve (1) is variable throttling tubular type throttle valve.
3. the decompression braking device for high oil pressure speed control system according to claim 1, its
Be characterised in that: described reduction valve (2) is for supplying to leak reduction valve in direct-acting type.
4. the decompression braking device for high oil pressure speed control system according to claim 1, its
Be characterised in that: brake valve (4) is electromagnetic direction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505579.8A CN103850870A (en) | 2012-12-03 | 2012-12-03 | Depressurizing brake device used for high-oil-pressure speed adjusting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210505579.8A CN103850870A (en) | 2012-12-03 | 2012-12-03 | Depressurizing brake device used for high-oil-pressure speed adjusting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103850870A true CN103850870A (en) | 2014-06-11 |
Family
ID=50858917
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210505579.8A Pending CN103850870A (en) | 2012-12-03 | 2012-12-03 | Depressurizing brake device used for high-oil-pressure speed adjusting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103850870A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201737A (en) * | 2015-10-19 | 2015-12-30 | 天津电气科学研究院有限公司 | Hydraulic auxiliary adjusting system of small-size hydropower station |
-
2012
- 2012-12-03 CN CN201210505579.8A patent/CN103850870A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105201737A (en) * | 2015-10-19 | 2015-12-30 | 天津电气科学研究院有限公司 | Hydraulic auxiliary adjusting system of small-size hydropower station |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140611 |