CN203515953U - Hydraulic servo system for speed regulator - Google Patents
Hydraulic servo system for speed regulator Download PDFInfo
- Publication number
- CN203515953U CN203515953U CN201320692472.9U CN201320692472U CN203515953U CN 203515953 U CN203515953 U CN 203515953U CN 201320692472 U CN201320692472 U CN 201320692472U CN 203515953 U CN203515953 U CN 203515953U
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- valve
- control valve
- directional control
- servomotor
- hydraulic
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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 provides a hydraulic servo system for a speed regulator. The hydraulic servo system comprises connecting pipelines, control valve groups and servomotors, wherein four sets of the control valve groups are connected with one set of the servomotors through the connecting pipelines respectively. The hydraulic servo system is characterized in that each control valve group further comprises an electromagnetic directional valve, an overflow valve, a hydraulic controlled directional control valve A and a hydraulic controlled directional control valve B, wherein the electromagnetic directional valve is located on an oil inlet pipe between shutoff valves and a spray needle servomotor; the hydraulic controlled directional control valve A is located between two hydraulic locks and the shutoff valves and connected with the two hydraulic locks and the shutoff valves respectively; and the hydraulic controlled directional control valve B is connected with the hydraulic controlled directional control valve A, the overflow valve and the two shutoff valves respectively. The overflow valve, the hydraulic controlled directional control valve A and the hydraulic controlled directional control valve B are added in the control valve groups and have a limiting effect on flow of oil in the pipelines; and when the flow is overlarge, the hydraulic controlled directional control valve A is closed, and the hydraulic controlled directional control valve B is opened, so that the flow limiting effect is realized.
Description
Technical field
The utility model belongs to hydraulic machine control field, relates in particular to a kind of speed regulator Hydrawlic Slave System.
Background technique
Conventional impulse turbine speed regulator Hydrawlic Slave System is controlled nozzle needle jet deflector by nozzle needle voltage distribution valve, by jet deflector voltage distribution valve, controls jet deflector, and centre is passed to speed regulator by the connection of control lever by feedback signal and regulated.The piston of nozzle needle voltage distribution valve and the machining accuracy of lining are lower, action underaction, and leakage of oil amount is large, and fault in service is more.For this reason, Chinese patent 200920097387.1 discloses. a kind of Hydrawlic Slave System of four spray four fold speed regulators, it is provided with control valve group, servomotor, it is characterized in that: it mainly comprises integrated package, nozzle needle servomotor, jet deflector servomotor, connecting pipeline and fuel tank: described integrated package is arranged on manifold block and is formed by control valve group, and connect nozzle needle servomotor and jet deflector servomotor by connecting pipeline: described control valve group mainly comprises hand automatic transfer valve and quadruplet nozzle needle jet deflector valve group; Every cover nozzle needle jet deflector valve group is comprised of Proportional valve, manual operating valve, solenoid directional control valve, shutoff valve.Change the hydraulic pressure amplifying element that patent has reduced speed regulator, simple in structure, reliable operation, has good quick-action and stability.But the interchangeability of the functional reliability of system and element is not ideal enough.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model provides a kind of speed regulator Hydrawlic Slave System, comprise connecting pipeline, control valve group and servomotor, described in quadruplet, by connecting pipeline, each is connected with a set of described servomotor control valve group respectively, described servomotor comprises nozzle needle servomotor, jet deflector servomotor, described control valve group comprises jet deflector operating valve, hand automatic transfer valve, Proportional valve, manual operating valve, hydraulic lock and shutoff valve, described hand automatic transfer valve is connected with manual operating valve with described Proportional valve respectively, each is connected described Proportional valve and manual operating valve with a hydraulic lock, two described hydraulic lock are connected with two described shutoff valves respectively, two described shutoff valves are connected with described nozzle needle servomotor, described jet deflector operating valve connects in described jet deflector servomotor, it is characterized in that described control valve group also comprises solenoid directional control valve, relief valve, pilot operated directional control valve A and pilot operated directional control valve B, described solenoid directional control valve is positioned on the oil inlet pipe between described shutoff valve and nozzle needle servomotor, described pilot operated directional control valve A is positioned between two described hydraulic lock and shutoff valve, and be connected with shutoff valve with two described hydraulic lock respectively, described pilot operated directional control valve B respectively with described pilot operated directional control valve A, relief valve is connected with two shutoff valves.
What it adopted is the hydraulic element of standard.
The beneficial effects of the utility model are: in control valve group, added relief valve, pilot operated directional control valve A and pilot operated directional control valve B, flow to oil in pipeline plays restriction, when flow is excessive, pilot operated directional control valve A closes, pilot operated directional control valve B opens, thereby has played the effect of current limliting; Be provided with solenoid directional control valve, after solenoid directional control valve is opened, the utility model could be worked, and has improved Security; New each valve adding of control valve group adopts the hydraulic element of standard, and reliable in quality, standardization level are high, has improved the reliability of system works simultaneously, and the interchangeability of element is compared existing Hydrawlic Slave System also have been had greatly and improve.
Accompanying drawing explanation
Fig. 1 is structural principle schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described further:
In figure, 1, nozzle needle servomotor; 2, jet deflector servomotor; 3, jet deflector operating valve; 4, hand automatic transfer valve; 5, Proportional valve; 6, manual operating valve; 7, hydraulic lock; 8, shutoff valve; 9, solenoid directional control valve; 10, relief valve; 11, pilot operated directional control valve A; 12, pilot operated directional control valve B.
As shown in Figure 1, by connecting pipeline, each is connected with a set of servomotor quadruplet control valve group respectively, servomotor comprises nozzle needle servomotor 1, jet deflector servomotor 2, control valve group comprises jet deflector operating valve 3, hand automatic transfer valve 4, Proportional valve 5, manual operating valve 6, hydraulic lock 7, shutoff valve 8, solenoid directional control valve 9, relief valve 10, pilot operated directional control valve A11 and pilot operated directional control valve B12, hand automatic transfer valve 4 is connected with manual operating valve 6 with Proportional valve 5 respectively, Proportional valve 5 is respectively connected with a hydraulic lock 7 with manual operating valve 6, two hydraulic lock 7 are connected with two shutoff valves 8 respectively, two shutoff valves 8 are connected with nozzle needle servomotor 1, solenoid directional control valve 9 is positioned on the oil inlet pipe of 1 of shutoff valve 8 and nozzle needle servomotor, pilot operated directional control valve A11 is positioned at 8 of two hydraulic lock 7 and shutoff valves, and be connected with shutoff valve 8 with two hydraulic lock 7 respectively, pilot operated directional control valve B12 respectively with pilot operated directional control valve A11, relief valve 10 is connected with two shutoff valves 8, jet deflector operating valve 3 connects in jet deflector servomotor 2, what each valve of control valve group adopted is the hydraulic element of standard.
Working principle of the present utility model:
1. automatic operation
The knob that will manually automatically switch is placed in automatic position, electric part sends instruction, Proportional valve 5 closes seat in the plane electromagnet and powers on, make Proportional valve 5 spools moving to shutdown displacement, open hydraulic lock 7, pressure oil enters nozzle needle servomotor 1 shutdown chamber, nozzle needle servomotor 1 is moved to shutdown direction, and then frequency is declined.Meanwhile, nozzle needle servomotor 1 drives displacement transducer, nozzle needle servomotor 1 position signal is changed, feed back to electric control equipment, until electric control equipment output signal restores balance (back to zero), Proportional valve 5 electromagnet dead electricity now, Proportional valve 5 is returned to meta, hydraulic lock 7 resets, and nozzle needle servomotor 1 is stabilized in the relative position that adjusting needs.Similarly, when machine class frequency is on the low side, direction of action is contrary to the above.
Above quadruplet nozzle needle servomotor 1 jet deflector servomotor 2 can single movement, also concurrently-acting.
2. manually-operable
The hand knob that automatically switches is placed in to manual position, when the pressure relay that shows hand automated location sends manual ringing, can operates manual operating valve 6 handles and make nozzle needle servomotor 1 open or close and realize manually-operable.
The realization of nozzle needle servomotor 1 switching on and shutting down action can realize by manually-operable and automatic operation.
Manually-operable: first move hand automatic transfer valve 4 is switched to manual mode by electrical signal, pressure oil arrives manual operating valve 6 by connecting pipeline, pilot operated directional control valve A11, shutoff valve 8, solenoid directional control valve 9 through receiving and distributing automatic transfer valve 4, arrive again nozzle needle servomotor 1 oil pocket, shutoff valve 8, pilot operated directional control valve A11, connecting pipeline, manual operating valve 6 automatic transfer valve 4 in one's hands are passed through in servomotor oil return, finally by flowing back to fuel tank by oil extraction pipeline.The handle of operation manual operating valve 6 opens or closes to realize the 1 switch direction action of nozzle needle servomotor.
Automatic operation: first by electrical signal, hand automatic transfer valve 4 is switched to auto state, pressure oil arrives Proportional valve 5 by connecting pipeline, pilot operated directional control valve A11, shutoff valve 8, solenoid directional control valve 9 through receiving and distributing automatic transfer valve 4, arrive again nozzle needle servomotor 1 oil pocket, shutoff valve 8, pilot operated directional control valve A11, connecting pipeline, Proportional valve 5 automatic transfer valve 4 in one's hands are passed through in servomotor oil return, finally by flowing back to fuel tank by oil extraction pipeline.By the electrical control Proportional valve 5 that automatically switches, realize 1 switch motion of nozzle needle servomotor.
The realization of jet deflector servomotor 2 switch motions be pressure oil directly by jet deflector operating valve 3 via shutoff valve, connecting pipeline, to jet deflector servomotor 2 oil pockets, the oil return of jet deflector servomotor flow back into fuel tank through connecting pipeline, shutoff valve, jet deflector operating valve 3 via oil extraction pipeline.
When oil flows through when large, relief valve 10 Stroke Control valve events, control pilot operated directional control valve A11 and be transformed into closed condition, control pilot operated directional control valve B12 simultaneously and change to open mode, thereby subtract primary oil flow, after macro-axis rotating speed reduces, relief valve 10 can automatically reset, and speed regulator recovers normal working.
By embodiment, to of the present utility model, have been described in detail above, but described content is only preferred embodiment of the present utility model, can not be considered to for limiting practical range of the present utility model.All equalization variations of doing according to the utility model application range and improvement etc., within all should still belonging to patent covering scope of the present utility model.
Claims (2)
1. a speed regulator Hydrawlic Slave System, comprise connecting pipeline, control valve group and servomotor, described in quadruplet, by connecting pipeline, each is connected with a set of described servomotor control valve group respectively, described servomotor comprises nozzle needle servomotor (1), jet deflector servomotor (2), described control valve group comprises jet deflector operating valve (3), hand automatic transfer valve (4), Proportional valve (5), manual operating valve (6), hydraulic lock (7) and shutoff valve (8), described hand automatic transfer valve (4) is connected with manual operating valve (6) with described Proportional valve (5) respectively, each is connected described Proportional valve (5) and manual operating valve (6) with a hydraulic lock (7), two described hydraulic lock (7) are connected with two described shutoff valves (8) respectively, two described shutoff valves (8) are connected with described nozzle needle servomotor (1), described jet deflector operating valve (3) connects in described jet deflector servomotor (2), it is characterized in that described control valve group also comprises solenoid directional control valve (9), relief valve (10), pilot operated directional control valve A(11) and pilot operated directional control valve B(12), described solenoid directional control valve (9) is positioned on the oil inlet pipe between described shutoff valve (8) and nozzle needle servomotor (1), described pilot operated directional control valve A(11) be positioned between two described hydraulic lock (7) and shutoff valve (8), and be connected with shutoff valve (8) with two described hydraulic lock (7) respectively, described pilot operated directional control valve B(12) respectively with described pilot operated directional control valve A(11), relief valve (10) is connected with two shutoff valves (8).
2. a kind of speed regulator Hydrawlic Slave System as claimed in claim 1, what it is characterized in that described control valve group adopts is the hydraulic element of standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692472.9U CN203515953U (en) | 2013-11-04 | 2013-11-04 | Hydraulic servo system for speed regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320692472.9U CN203515953U (en) | 2013-11-04 | 2013-11-04 | Hydraulic servo system for speed regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203515953U true CN203515953U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320692472.9U Expired - Fee Related CN203515953U (en) | 2013-11-04 | 2013-11-04 | Hydraulic servo system for speed regulator |
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| Country | Link |
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| CN (1) | CN203515953U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191317A (en) * | 2017-07-07 | 2017-09-22 | 武汉武水电气技术有限责任公司 | It is a kind of to be used as power rotational speed of water turbine modulator of the water as working media using hydraulic pressure |
-
2013
- 2013-11-04 CN CN201320692472.9U patent/CN203515953U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107191317A (en) * | 2017-07-07 | 2017-09-22 | 武汉武水电气技术有限责任公司 | It is a kind of to be used as power rotational speed of water turbine modulator of the water as working media using hydraulic pressure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140402 Termination date: 20141104 |
|
| EXPY | Termination of patent right or utility model |