CN201059240Y - Hydroelectric generating set overrun protecting equipment - Google Patents
Hydroelectric generating set overrun protecting equipment Download PDFInfo
- Publication number
- CN201059240Y CN201059240Y CNU2007200968535U CN200720096853U CN201059240Y CN 201059240 Y CN201059240 Y CN 201059240Y CN U2007200968535 U CNU2007200968535 U CN U2007200968535U CN 200720096853 U CN200720096853 U CN 200720096853U CN 201059240 Y CN201059240 Y CN 201059240Y
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- chamber
- spool
- servomotor
- oil
- valve
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- Expired - Fee Related
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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 utility model relates to an overspeed protecting device for hydraulic turbine generator unit and belongs to the water turbine technical field. The utility model comprises a valve body and a valve core, wherein, the valve core is arranged inside the valve body; the valve body is provided with a main distributing open chamber and a closed chamber of a water turbine speed regulator, an open chamber and a closed chamber of a servomotor, and a pressure oil chamber and an oil return chamber of an accident regulation valve. When the hydraulic turbine generator unit is in normal operation, the valve core communicates the main distributing open chamber of the speed regulator and the open chamber of the servomotor and communicates the closed chamber of the speed regulator and the closed chamber of the servomotor, and cuts off the pressure oil chamber and the oil return chamber of the accident regulation valve; when the hydraulic turbine generator unit is in overspeed operation, the valve core moves and then cuts off the main distributing open chamber and the closed chamber of the speed regulator, and communicates the pressure oil chamber of the accident regulation valve and the closed chamber of the servomotor and communicates the oil return chamber of the accident regulation valve and the open chamber of the servomotor. The utility model has the advantages of high integrated degree, small volume, light weight, convenient assembly, good stability, avoidance of oil leakage and oil penetration caused by inappropriate assembly, etc.
Description
Technical field
The utility model belongs to turbine technology field, particularly relates to a kind of hydraulic generator unit overspeed protection device.
Background technique
At present, hydraulic generator unit overspeed protection device commonly used is made of discrete assembly, with reference to accompanying drawing 4.But it mainly is made up of two-position four-way solenoid valve 1,2DP, fuel tap 1,2SYF oil adjusting valve 3,4SYF etc., its concrete operating principle is as follows: when unit normally moves, joining the open and close chamber by the speed regulator master connects by the switch cavity of fuel tap 1SYF and 2SYF and servomotor, regulate guide vane servomotor, the control of fuel tap 1SYF and 2SYF is controlled by electromagnetism voltage distribution valve 1DP.When overrunning appears in unit, and to send signal and making electromagnetism voltage distribution valve 1DP dead electricity when malfunctioning appear in speed regulator, and fuel tap 1SYF and 2SYF end; 2DP is charged for the electromagnetism voltage distribution valve; control fuel tap 3SYF; 4SYF opens; the pressure oil of oil gear closes the chamber connection through fuel tap 3SYF and servomotor; servomotor is begun to speak through the fuel tap 4SYF oil that runs in; but fuel tap 3SYF and 4SYF are designed to oil adjusting valve; purpose is the dead time of adjustable complete machine group; make to be adjusted at dead time in the allowed band, this scheme shortcoming is installed complicated, especially causes installation improper easily for inexperienced fitting-up gang; the oil impregnate phenomenon appears; because various valves are many,, will make the whole system paralysis simultaneously in case a valve is out of order.
Summary of the invention
The technical problem of the utility model for existing in the solution known technology, and a kind of hydraulic generator unit overspeed protection device is provided.
The purpose of this utility model provides that a kind of integrated degree height, volume are little, in light weight, easy for installation, the integrated form hydraulic generator unit overspeed protection device of good stability.
The utility model is taked following technological scheme:
Hydraulic generator unit overspeed protection device is a kind of two six-way transfer valves, it is characterized in that: the spool in the valve body commutates under the differential pressure effect; Valve body is provided with to join with the hydrogovernor master begins to speak, closes the chamber, and the chamber is begun to speak, closed to servomotor, the hydraulic fluid port that emergency distributing valve pressure oil cavity, oil back chamber join; When the hydraulic generator unit normally moved, spool was in upper under the differential pressure effect, and the open and close chamber that the speed regulator master joins communicates with the open and close chamber of servomotor respectively, and the adjustment of unit operation operating mode is joined the operation servomotor by the speed regulator master and realized.When speed regulator breaks down when causing generating unit speed too high, spool moves down under the differential pressure effect, will cut off the control loop of speed regulator, and the emergency distributing valve pressure oil cavity closed the chamber with servomotor and led to this moment, and servomotor begins to speak to take back oil.The water distributor of water turbine is realized closing under the servomotor operation, thereby realizes the shutdown of hydraulic generator unit.
The utility model can also adopt following technical measures:
Described hydraulic generator unit overspeed protection device is characterized in: spool is for portable, and spool is the concentric cylindrical structure of different-diameter.
Described hydraulic generator unit overspeed protection device is characterized in: spool two end section differences, and two ends connect pressure oil respectively by oil pipe, and wherein an end oil pipe connects two-position three way magnetic valve; The two-position three way magnetic valve cut-out pressure oil that commutates under the overspeed protection SC sigmal control, oil pipe takes back oil pipe, and spool is moved under the differential pressure effect.
Described hydraulic generator unit overspeed protection device is characterized in: spool is for portable, and spool is the cylindrical structure that has groove or oilhole.
Advantage that the utlity model has and good effect:
The utility model is compared with existing hydraulic generator unit overspeed protection device, has integrated degree height, little, the in light weight characteristics of volume.It is easy for installation comparing biggest advantage with the overspeed protection that traditional discrete assembly constitutes, and good stability has been avoided because of improper leakage of oil that causes or oil impregnate phenomenon are installed.
Description of drawings
Fig. 1 is the utility model cross-sectional view;
Fig. 2 is the left TV structure schematic representation of Fig. 1;
Fig. 3 is a fundamental diagram of the present utility model;
Fig. 4 is a prior art water turbine overspeed protection structural representation.
Among the figure, 1-oil pipe, 2-oil pipe, 3-spool, 4-solenoid valve, 5-valve body.
Embodiment
For further understanding content of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
Consult accompanying drawing 1, Fig. 2, Fig. 3 and Fig. 4.
Hydraulic generator unit overspeed protection device comprises valve body and spool, is provided with spool 3 in its valve body 5.Spool 3 is a concentric cylindrical structure portable, different-diameter.3 liang of end section differences of spool, two ends connect pressure oil respectively by oil pipe 1, oil pipe 2, and wherein an end oil pipe 2 connects two-position three way magnetic valve 4; The two-position three way magnetic valve 4 cut-out pressure oil that commutates under the overspeed protection SC sigmal control, oil pipe 2 takes back oil pipe, and spool 3 is moved under the differential pressure effect.Valve body is provided with the hydrogovernor master joins the B that begins to speak, closes chamber D, servomotor begin to speak A, close chamber C, emergency distributing valve pressure oil cavity P, oil back chamber O; When water turbine normally moved, spool 3 was positioned at upper, and its spool 3 is communicated with the speed regulator masters and joins begin to speak A, speed regulator of begin to speak B and servomotor and close chamber D and servomotor pass chamber C, cut-out emergency distributing valve pressure oil cavity P and oil back chamber O; When speed regulator breaks down when causing generating unit speed too high, spool 3 is positioned at the next, and its spool 3 cuts off the speed regulator masters joins the B that begins to speak and close chamber D with speed regulator, is communicated with emergency distributing valve pressure oil cavity P and servomotor pass chamber C, emergency distributing valve oil back chamber O and the servomotor A that begins to speak.The water distributor of water turbine is realized the protection of hydraulic generator unit under the servomotor operation.
The structure of present embodiment and working procedure thereof:
Hydraulic generator unit overspeed protection device is with the electromagnetism voltage distribution valve; fuel tap; the automation component that emergency distributing valve becomes one; its working principle is seen Fig. 1; Fig. 2; Fig. 3: when hydraulic turbine generator during in normal operation; pipe 1; pipe 2 all connects pressure oil; spool 3 is in upper under the differential pressure effect; at this moment; the P chamber of emergency distributing valve and O chamber cut off; the opening and closing chamber that the speed regulator master joins is opened the chamber and is closed valve pocket with servomotor respectively and communicates; be that B chamber and A chamber are logical; the D chamber is divided and the C chamber leads to; the adjustment of the normal operating conditions of unit; master by speed regulator joins valve operation servomotor and realizes; and when speed regulator breaks down; cause generating unit speed too high; speed regulator can't finish by servomotor and cut out water distributor when operation; manage the two-position three way magnetic valve of 2 front ends and accept the overspeed protection signalizing activity; the two position three-way valve commutation; pressure oil is cut off; pipe 2 takes back oil; spool 3 moves down under the differential pressure effect; valve body is realized commutation; the control loop of speed regulator is cut off; this moment, P chamber and C chamber were logical; A chamber and O chamber are logical, and emergency distributing valve is connected the pressure oil of oil system and the chamber of closing of servomotor, and the unlatching chamber of servomotor takes back oil; the water distributor of water turbine is realized closing under the servomotor operation, thereby realizes the shutdown of hydraulic generator unit.
Claims (4)
1. a hydraulic generator unit overspeed protection device comprises valve body and spool, and spool is arranged in the valve body, it is characterized in that: be provided with spool (3) in the valve body (5); Valve body is provided with the hydrogovernor master joins begin to speak (B), closes chamber (D), servomotor begin to speak (A), close chamber (C), emergency distributing valve pressure oil cavity (P), oil back chamber (O); When water turbine normally moved, spool (3) was communicated with the speed regulator master and joins begin to speak (A), speed regulator of begin to speak (B) and servomotor and close chamber (D) and close chamber (C) with servomotor, cuts off emergency distributing valve pressure oil cavity (P) and oil back chamber (O); During hydraulic generator unit over-speed operation, spool (3) is after moving, cut off the speed regulator master and join begin to speak (B) and close chamber (D), be communicated with emergency distributing valve pressure oil cavity (P) and servomotor and close chamber (C), emergency distributing valve oil back chamber (O) and servomotor begin to speak (A) with speed regulator.
2. hydraulic generator unit overspeed protection device according to claim 1 is characterized in that: spool (3) is for portable, and spool (3) is the concentric cylindrical structure of different-diameter.
3. hydraulic generator unit overspeed protection device according to claim 2 is characterized in that: spool (3) two end section differences, and two ends connect pressure oil respectively by oil pipe (1,2), and wherein an end oil pipe (2) connects two-position three way magnetic valve; The two-position three way magnetic valve cut-out pressure oil that commutates under the overspeed protection SC sigmal control, oil pipe (2) takes back oil pipe, and spool (3) is moved under the differential pressure effect.
4. hydraulic generator unit overspeed protection device according to claim 1 is characterized in that: spool (3) is for portable, and spool (3) is for having the cylindrical structure of groove or oilhole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200968535U CN201059240Y (en) | 2007-07-24 | 2007-07-24 | Hydroelectric generating set overrun protecting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200968535U CN201059240Y (en) | 2007-07-24 | 2007-07-24 | Hydroelectric generating set overrun protecting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201059240Y true CN201059240Y (en) | 2008-05-14 |
Family
ID=39407709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200968535U Expired - Fee Related CN201059240Y (en) | 2007-07-24 | 2007-07-24 | Hydroelectric generating set overrun protecting equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201059240Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102506007A (en) * | 2011-11-09 | 2012-06-20 | 广东中兴液力传动有限公司 | Double-cavity hydraulically coupled anti-flying device |
| CN102853114A (en) * | 2011-06-29 | 2013-01-02 | 浙江盾安机械有限公司 | Two-position six-way valve for electric vehicle air conditionings and heat-pump heating and cooling air conditioning system for electric vehicles |
| CN107842461A (en) * | 2017-12-05 | 2018-03-27 | 国网江西省电力有限公司柘林水电厂 | A kind of high-precision turbine-generator units pressure oil system and its application method |
-
2007
- 2007-07-24 CN CNU2007200968535U patent/CN201059240Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102853114A (en) * | 2011-06-29 | 2013-01-02 | 浙江盾安机械有限公司 | Two-position six-way valve for electric vehicle air conditionings and heat-pump heating and cooling air conditioning system for electric vehicles |
| CN102853114B (en) * | 2011-06-29 | 2014-12-17 | 浙江盾安机械有限公司 | Two-position six-way valve for electric vehicle air conditionings and heat-pump heating and cooling air conditioning system for electric vehicles |
| CN102506007A (en) * | 2011-11-09 | 2012-06-20 | 广东中兴液力传动有限公司 | Double-cavity hydraulically coupled anti-flying device |
| CN102506007B (en) * | 2011-11-09 | 2014-04-02 | 广东中兴液力传动有限公司 | Double-cavity hydraulically coupled anti-flying device |
| CN107842461A (en) * | 2017-12-05 | 2018-03-27 | 国网江西省电力有限公司柘林水电厂 | A kind of high-precision turbine-generator units pressure oil system and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080514 Termination date: 20110724 |