CN202673557U - Mechanical hydraulic overspeed protecting device for water turbine - Google Patents
Mechanical hydraulic overspeed protecting device for water turbine Download PDFInfo
- Publication number
- CN202673557U CN202673557U CN2012202529054U CN201220252905U CN202673557U CN 202673557 U CN202673557 U CN 202673557U CN 2012202529054 U CN2012202529054 U CN 2012202529054U CN 201220252905 U CN201220252905 U CN 201220252905U CN 202673557 U CN202673557 U CN 202673557U
- Authority
- CN
- China
- Prior art keywords
- mounting plate
- water turbine
- overspeed
- return opening
- hydraulic fluid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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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
Abstract
The utility model discloses a mechanical hydraulic overspeed protecting device for a water turbine. The mechanical hydraulic overspeed protecting device comprises a mounting plate (4) provided with an extension rod (12), an operating rod (5), a locking device (6), an overspeed detector (1), a centrifugal block (2), and a hoop (10) for fixing the overspeed detector (1) on a spindle (11) of the water turbine. Overspeed protection of the water turbine is achieved by controlling an emergency distributing valve of the water turbine. The mechanical hydraulic overspeed protecting device for the water turbine is simple in structure, convenient to maintain, free of power control and high in reliability.
Description
Technical field
The utility model relates to turbine technology field, particularly a kind of water turbine mechanical-hydraulic overspeed protection device.
Background technique
The hydraulic turbine generator unit causes generating unit speed to raise under accident conditions, if this moment hydrogovernor fault or tripping or power station when having a power failure, must realize by the method for mechanical overspeed protection the quick shutdown of unit, avoid accident further to enlarge.At present overspeed protection device commonly used exists needs electrical signal control or working value to adjust unreliable or moves the problem such as unreliable.Application number is that 200920245276.0 utility model patent discloses a kind of hydraulic over-speed protecting device for water turbine generator sets, and this apparatus structure is complicated, cost is high, in the future difficult in maintenance.
Summary of the invention
Technical problem to be solved in the utility model is, and is not enough for prior art, and a kind of mechanical-hydraulic overspeed protection device of simple in structure, easy for installation, reliable in action is provided.
For solving the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of water turbine mechanical-hydraulic overspeed protection device, comprise the mounting plate (4) with extension rod (12), operating stem (5), locker (6), overspeed detector (1), centrifugal-block (2), described mounting plate (4) one sides are equipped with pressure hydraulic fluid port (7), control port (8), return opening (9), described mounting plate (4) opposite side is equipped with selector valve (3), pressure hydraulic fluid port (7) on the mounting plate is connected 9 with return opening) end is connected with return opening with the pressure hydraulic fluid port of oil gear respectively, pressure hydraulic fluid port (7) on the mounting plate and return opening (9) the other end are communicated with pressure hydraulic fluid port and the return opening of selector valve (3) respectively by mounting plate (4), control port (8) one ends on the mounting plate are communicated with the output oil port of selector valve (3) by mounting plate (4), control port on the mounting plate (8) the other end is connected with the control port of water turbine emergency distributing valve, operating stem (5) one ends are fixed on the selector valve (3), operating stem (5) the other end is connected with locker (6), and locker (6) the other end is fixed on the extension rod (12); Centrifugal-block (2) is fixed on the overspeed detector (1) that is oppositely arranged with operating stem (5), and overspeed detector (1) is fixed on the hydraulic turbine main shaft (11) by anchor ear (10).
The utility model is simple in structure, easy to maintenance, need not power supply control, and reliability is high.
Description of drawings
Fig. 1 is the utility model one embodiment's structural representation.
Embodiment
As shown in Figure 1, the utility model one embodiment comprises the mounting plate 4 with extension rod 12, operating stem 5, locker 6, overspeed detector 1, centrifugal-block 2, described mounting plate 4 one sides are equipped with pressure hydraulic fluid port 7, control port 8, return opening 9, described mounting plate 4 opposite sides are equipped with selector valve 3, pressure hydraulic fluid port 7 on the mounting plate is connected an end and is connected with return opening with the pressure hydraulic fluid port of oil gear respectively with return opening, pressure hydraulic fluid port 7 on the mounting plate and return opening 9 the other ends are communicated with pressure hydraulic fluid port and the return opening of selector valve 3 respectively by mounting plate 4, control port 8 one ends on the mounting plate are communicated with the output oil port of selector valve 3 by mounting plate 4, control port 8 the other ends on the mounting plate are connected with the control port of water turbine emergency distributing valve, operating stem 5 one ends are fixed on the selector valve 3, operating stem 5 the other ends are connected with locker 6, and locker 6 the other ends are fixed on the extension rod 12; Centrifugal-block 2 is fixed on the overspeed detector 1 that is oppositely arranged with operating stem 5, impact operations bar 5 when centrifugal-block 2 throws away on overspeed detector 1, and overspeed detector 1 is fixed on the hydraulic turbine main shaft 11 by anchor ear 10; Locker (6) is spring.
Selector valve 3 is two-position four way change valve, controls its commutation by the rotation of operating stem 5, and selector valve 3 is installed on the mounting plate 4.
Pressure hydraulic fluid port 7, control port 8, return opening 9 by jiont treatment on mounting plate 4.
During installation; keep a determining deviation between centrifugal-block 2 and the operating stem 5; hydraulic turbine main shaft 11 is rotated counterclockwise; when unit normally moves; the centrifugal force that centrifugal-block 2 is subject to is not enough to collide operating stem 5 so that it throws away; the mechanical-hydraulic overspeed protection device is in normal holding state, and control port 8 outputs are without pressure oil.
Under the accident conditions, rotating speed is too high to be reached when overrunning working value, the centrifugal force that centrifugal-block 2 is subject to increases, and overcomes the pulling force of overspeed detector 1 contained spring, is thrown out of rear impact operations bar 5, operating stem 5 rotates to the B position from the A position, under the effect of locker 6 spring forces, be fixed on reliably the B position, realized the commutation of selector valve 3, control port 8 pressure oil output, the emergency distributing valve action that driving is attached thereto realizes the quick closedown of water turbine.
After compressor emergency shutdown is fixed a breakdown, manually pull operating stem 5 and get back to the A position from the B position, selector valve 3 is got back to reset mode, and the mechanical-hydraulic overspeed protection device is in normal holding state, and control port 8 outputs are without pressure oil.
Claims (4)
1. water turbine mechanical-hydraulic overspeed protection device, comprise the mounting plate (4) with extension rod (12), operating stem (5), locker (6), overspeed detector (1), centrifugal-block (2), it is characterized in that, described mounting plate (4) one sides are equipped with pressure hydraulic fluid port (7), control port (8), return opening (9), described mounting plate (4) opposite side is equipped with selector valve (3), pressure hydraulic fluid port (7) on the mounting plate is connected 9 with return opening) end is connected with return opening with the pressure hydraulic fluid port of oil gear respectively, pressure hydraulic fluid port (7) on the mounting plate and return opening (9) the other end are communicated with pressure hydraulic fluid port and the return opening of selector valve (3) respectively by mounting plate (4), control port (8) one ends on the mounting plate are communicated with the output oil port of selector valve (3) by mounting plate (4), control port on the mounting plate (8) the other end is connected with the control port of water turbine emergency distributing valve, operating stem (5) one ends are fixed on the selector valve (3), operating stem (5) the other end is connected with locker (6), and locker (6) the other end is fixed on the extension rod (12); Centrifugal-block (2) is fixed on the overspeed detector (1) that is oppositely arranged with operating stem (5), and overspeed detector (1) is fixed on the hydraulic turbine main shaft (11) by anchor ear (10).
2. water turbine mechanical-hydraulic overspeed protection device according to claim 1 is characterized in that, described locker (6) is spring.
3. water turbine mechanical-hydraulic overspeed protection device according to claim 1 is characterized in that, described selector valve (3) is two-position four way change valve.
4. water turbine mechanical-hydraulic overspeed protection device according to claim 1 is characterized in that, described pressure hydraulic fluid port (7), control port (8), return opening (9) by jiont treatment on mounting plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202529054U CN202673557U (en) | 2012-05-31 | 2012-05-31 | Mechanical hydraulic overspeed protecting device for water turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202529054U CN202673557U (en) | 2012-05-31 | 2012-05-31 | Mechanical hydraulic overspeed protecting device for water turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202673557U true CN202673557U (en) | 2013-01-16 |
Family
ID=47494465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012202529054U Expired - Lifetime CN202673557U (en) | 2012-05-31 | 2012-05-31 | Mechanical hydraulic overspeed protecting device for water turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202673557U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196664A (en) * | 2013-03-22 | 2013-07-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN104358656A (en) * | 2014-11-12 | 2015-02-18 | 中国电建集团成都勘测设计研究院有限公司 | Gravity overspeed protection device |
-
2012
- 2012-05-31 CN CN2012202529054U patent/CN202673557U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196664A (en) * | 2013-03-22 | 2013-07-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN103196664B (en) * | 2013-03-22 | 2015-06-10 | 四川中鼎自动控制有限公司 | Hydraulic power plant mechanical hydraulic pressure over-speed protection device simulation test platform and test method |
| CN104358656A (en) * | 2014-11-12 | 2015-02-18 | 中国电建集团成都勘测设计研究院有限公司 | Gravity overspeed protection device |
| CN104358656B (en) * | 2014-11-12 | 2017-04-12 | 中国电建集团成都勘测设计研究院有限公司 | Gravity overspeed protection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130116 |