CN2389240Y - Fully liquid controlled double-regulation electricity-liquid servo device - Google Patents
Fully liquid controlled double-regulation electricity-liquid servo device Download PDFInfo
- Publication number
- CN2389240Y CN2389240Y CN99232143U CN99232143U CN2389240Y CN 2389240 Y CN2389240 Y CN 2389240Y CN 99232143 U CN99232143 U CN 99232143U CN 99232143 U CN99232143 U CN 99232143U CN 2389240 Y CN2389240 Y CN 2389240Y
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- China
- Prior art keywords
- control valve
- wheel blade
- stator
- base plate
- 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 a full liquid control double-regulation electricity-liquid servo device, which comprises a guide vane main distributing valve, a wheel blade main distributing valve, a guide vane liquid control valve, a wheel blade liquid control valve, an integrated valve block, an oil filter and a connecting bottom board, wherein, the connecting bottom board is provided with pipelines; each functional part is [in] a symmetrical single layer structure which takes the integrated valve block and the oil filter as the centerline on the connecting bottom board; the pipelines of the connecting bottom board are oil circuit pipelines which make the functional parts communicated with each other. The utility model simplifies the complete machine structure of the existing double-regulation electricity-liquid servo device, enhances the reliability and the control accuracy, and brings the convenience for installation, debugging, operation and maintenance.
Description
The utility model relates to a control gear in the control hydraulic turbine generator unit operation system, and a kind of two electro-hydraulic servo devices of transferring are used for the servo-actuated control to stator and wheel blade servomotor aperture.
At present, domestic two electro-hydraulic servo devices of transferring mainly contain two kinds of patterns: first kind is that the control of stator is adopted automatically and the mechanism hand flowing mode, and mechanical joint mode is adopted in the control of wheel blade; Second kind is that the control of stator is adopted automatically and the mechanism hand flowing mode, and electric joint mode is adopted in the control of wheel blade.These two kinds of pattern complete machine structure complexity, the control component generally will divide two-layer layout up and down, the transmission lever is many, the debugging trouble, and owing to connect the inevitable gap that produces by pin or bearing between lever, cause control accuracy not high, the dead band is big, and because the oil circuit between the hydraulic element passes through copper pipe or steel pipe connects, not only not attractive in appearance, in the pipe joint joint seepage taking place easily, can not satisfy the requirement of power station civilization operation.
External two electro-hydraulic servo devices of transferring adopt automated manner to the control of stator, electric joint mode is adopted in the control of wheel blade, cancelled the mechanical manual function of control stator, and adopt electric hand moving, though this pattern complete machine structure is simple, still to carry out manually-operable but electric hand is moving, when servovalve is malfunctioning, also just lose effectiveness simultaneously automatically with manually by servovalve.
The purpose of this utility model is intended to simplify existing two complete machine structure of transferring the electro-hydraulic servo device, improves the reliability of system, improves control accuracy, develops a kind of full-pilot-controlled dual-regulation electro-hydraulic servo device.
Realize the technological scheme of above-mentioned purpose: a kind of full-pilot-controlled dual-regulation electro-hydraulic servo device, comprise stator main control valve, wheel blade main control valve, stator hydraulic control valve, wheel blade hydraulic control valve, integrated valve block, oil purifier and have the base plate that is connected of pipeline, each functional part is to be the symmetrical single layer structure of center line with integrated valve block, oil purifier connecting on the base plate, and each pipeline that connects on the base plate is the oil line pipe between connection stator main control valve, wheel blade main control valve, stator hydraulic control valve, wheel blade hydraulic control valve, integrated valve block and each functional part of oil purifier.
Connect hydraulic fluid port joint O RunddichtringO sealing between base plate and each functional part.
The beneficial effect of above-mentioned full-pilot-controlled dual-regulation electro-hydraulic servo device: 1, adopt the oil line pipe integrated technology, nos lever, no exposed conduit in the device wave for sufficient degree that flow control technique makes the no gap of moving element realization transmitting movement, greatly reduces the dead band, the raising control accuracy has had more reliable assurance; 2, this single layer structure after the employing base plate technology makes complete machine structure succinct, novel; 3, carry out the ne-leakage sealing in all hydraulic fluid port joints with the O RunddichtringO, satisfied the requirement of power station civilization operation; 4, single layer structure has not only improved the reliability of system, and brings easy in installation, debugging, operation, the maintenance.
Below by embodiment in detail its structure is described in detail:
Fig. 1 is a kind of assembly structure schematic representation of full-pilot-controlled dual-regulation electro-hydraulic servo device.
Fig. 2 is the bottom plate structure schematic representation corresponding to Fig. 1.
Fig. 3 be among Fig. 1 between each functional part oil circuit connect block diagram.
Embodiment: in conjunction with Fig. 1 to Fig. 3, external pressure oil enters oil purifier 2 by base plate duct 15, after oil purifier filtered, clean pilot pressure oil arrived functional part wheel blade main control valve 1, stator main control valve 4, stator hydraulic control valve 5, integrated valve block 6, wheel blade hydraulic control valve 7 by base plate duct 12; In addition, the control oil return of wheel blade main control valve 1, stator main control valve 4, stator hydraulic control valve 5, integrated valve block 6, wheel blade hydraulic control valve 7 is got rid of by the duct 11 of base plate 3.
During the stator automatic control mode, the stator hand automatic electromagnetic valve in the integrated valve block 6 is in automatic running position, and the pressure oil of output enters stator main control valve 4 by base plate duct 16, closes selector valve wherein.Stator servo proportion in the integrated valve block 6 is accepted the current signal of regulator cubicle output, export after converting thereof into flux signal, the flux signal of output enters the auxiliary receiver control chamber of stator main control valve 4 by base plate duct 17, control stator auxiliary receiver piston action.Because of stator auxiliary receiver piston and stator main control valve piston fuse, also just promoted stator main control valve piston action, the flow operation guide vane servomotor of output, thus the control guide vane opening reaches the purpose of regulating unit operation.
Automatically under the running state, after the change in location of guide vane servomotor, the response agency that connects guide vane servomotor is passed to stator hydraulic control valve 5 with mechanical feedback signal, automatically adjust the oil pressure of piston upper and lower cavity in the stator hydraulic control valve by base plate duct 20,21, the piston motion of control stator hydraulic control valve, the current location that realization stator hydraulic control valve is followed the tracks of guide vane servomotor.
During the stator manual control mode, out of service or people is when switching to manual running state when regulator cubicle, stator hand automatic electromagnetic valve in the integrated sudden strain of a muscle valve piece 6 is in manual running position, and the pressure oil that enters stator main control valve 4 by base plate duct 16 is cut off, and opens selector valve wherein; Simultaneously, the oil circuit of stator servo proportion is cut, and it no longer produces control action to system.Guide vane opening solenoid valve in the operation integrated valve block 6, the flow of its output enters the cavity of resorption of piston in the stator hydraulic control valve 5 by base plate duct 20, the motion of control piston, the flow that piston motion produces enters integrated valve block 6 by base plate duct 21, enter the auxiliary receiver control chamber of stator main control valve 4 again through base plate duct 17 by pilot operated directional control valve wherein, control stator auxiliary receiver piston action.Because of stator auxiliary receiver piston and stator main control valve piston fuse, also just promoted stator main control valve piston action, the flow operation guide vane servomotor of output, thus the control guide vane opening reaches the purpose of regulating unit operation.Manually-operable finishes, and the pilot operated directional control valve pressure oil output in the integrated valve block 6 enters locking device in the stator hydraulic control valve 5 by base plate duct 19, and stator hydraulic control valve piston is pinned.
Stator emergency shutdown mode; after the emergency shutdown solenoid valve in the integrated valve block 6 receives emergency-stop signal; the pressure oil of its output is shut down the chamber by the auxiliary receiver that base plate duct 18 enters stator main control valve 4, and control stator auxiliary receiver piston moves downward.Because of stator auxiliary receiver piston and stator main control valve piston fuse, also just promoted stator main control valve piston and moved downward, the flow operation guide vane servomotor of output is closed, thereby realizes shutting down.
The wheel blade automatic control mode, the wheel blade hand automatic electromagnetic valve in the integrated valve block 6 is in automatic running position, and the pressure oil of output is crossed base plate duct 13 and is entered wheel blade main control valve 1, closes selector valve wherein.Wheel blade servo proportion in the integrated valve block 6 is accepted the current signal of regulator cubicle output, export after converting thereof into flux signal, the flux signal of output enters the auxiliary receiver control chamber of wheel blade main control valve 1 by base plate duct 14, control wheel blade auxiliary receiver piston action.Because of wheel blade auxiliary receiver piston and wheel blade main control valve piston fuse, also just promoted wheel blade main control valve piston action, the flow operation wheel blade servomotor of output, thereby control wheel blade angle reach the purpose of joint operation.
Automatically under the running state, after the change in location of wheel blade servomotor, the response agency that connects the wheel blade servomotor is passed to wheel blade hydraulic control valve 7 with mechanical feedback signal, automatically adjust the oil pressure of piston upper and lower cavity in the wheel blade hydraulic control valve by base plate duct 9,10, the piston motion of control wheel blade hydraulic control valve, the current location that realization wheel blade hydraulic control valve is followed the tracks of the wheel blade servomotor.
The wheel blade manual control mode, out of service or people is when switching to manual running state when regulator cubicle, wheel blade hand automatic electromagnetic valve in the integrated valve block 6 is in manual running position, and the pressure oil that enters wheel blade main control valve 1 by base plate duct 13 is cut off, and opens selector valve wherein; Simultaneously, the oil circuit of wheel blade servo proportion is cut, and it no longer produces control action to system.Wheel blade aperture solenoid valve in the operation integrated valve block 6, the flow of its output enters the cavity of resorption of piston in the wheel blade hydraulic control valve 7 by base plate duct 9, the motion of control piston, the flow that piston motion produces enters integrated valve block 6 by base plate duct 10, enter the auxiliary receiver control chamber of wheel blade main control valve 1 again through base plate duct 14 by pilot operated directional control valve wherein, control wheel blade auxiliary receiver piston action.Because of wheel blade auxiliary receiver piston and wheel blade main control valve piston fuse, also just promoted wheel blade main control valve piston action, the flow operation wheel blade servomotor of output, thereby control wheel blade angle reach the purpose of joint operation.Manually-operable finishes, and the pilot operated directional control valve pressure oil output in the integrated valve block 6 enters locking device in the wheel blade hydraulic control valve 7 by base plate duct 8, and wheel blade hydraulic control valve piston is pinned.
For guaranteeing the sealing effect of base plate oil line pipe and above-mentioned all each functional part hydraulic fluid port joints, carry out the ne-leakage sealing with the O RunddichtringO.
Claims (2)
1, a kind of full-pilot-controlled dual-regulation electro-hydraulic servo device, comprise functional parts such as stator main control valve, wheel blade main control valve, stator hydraulic control valve, wheel blade hydraulic control valve, integrated valve block and oil purifier, it is characterized in that: also comprise connection base plate with pipeline, each functional part is to be the symmetrical single layer structure of center line with integrated valve block, oil purifier connecting on the base plate, and each pipeline that connects on the base plate is the oil line pipe between connection stator main control valve, wheel blade main control valve, stator hydraulic control valve, wheel blade hydraulic control valve, integrated valve block and each functional part of oil purifier.
2, full-pilot-controlled dual-regulation electro-hydraulic servo device according to claim 1 is characterized in that: connect hydraulic fluid port joint O RunddichtringO sealing between base plate and each functional part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99232143U CN2389240Y (en) | 1999-07-16 | 1999-07-16 | Fully liquid controlled double-regulation electricity-liquid servo device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99232143U CN2389240Y (en) | 1999-07-16 | 1999-07-16 | Fully liquid controlled double-regulation electricity-liquid servo device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2389240Y true CN2389240Y (en) | 2000-07-26 |
Family
ID=34020886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99232143U Expired - Fee Related CN2389240Y (en) | 1999-07-16 | 1999-07-16 | Fully liquid controlled double-regulation electricity-liquid servo device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2389240Y (en) |
-
1999
- 1999-07-16 CN CN99232143U patent/CN2389240Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |