CN202203033U - Full-automatic electro-hydraulic proportional control system - Google Patents
Full-automatic electro-hydraulic proportional control system Download PDFInfo
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- CN202203033U CN202203033U CN2011203275953U CN201120327595U CN202203033U CN 202203033 U CN202203033 U CN 202203033U CN 2011203275953 U CN2011203275953 U CN 2011203275953U CN 201120327595 U CN201120327595 U CN 201120327595U CN 202203033 U CN202203033 U CN 202203033U
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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 full-automatic electro-hydraulic proportional control system capable of providing accurate and reliable parameters. The system comprises an automatic oil supply device, an electro-hydraulic parallel proportional follow-up control system, an over-speed limiting device, a section closing device and a hydraulic locking device, which are connected sequentially; and the electro-hydraulic parallel proportional follow-up control system comprises a digital control plug-in mounting set, a low-fluctuation proportional servo set and a fine tuning manual operation set, which are connected sequentially. The full-automatic electro-hydraulic proportional control system is designed for a large hydraulic generator speed regulator; and compared with the conventional oil pressure control system, the system using a high pressure oil pump as the power source has the advantages that: the structural size of the system is greatly reduced and the work flow of the system is also greatly reduced.
Description
Technical field
The utility model relates to a kind of hydraulic test system, especially a kind of full-automatic electro-hydraulic proportional control system.
Background technique
Control system to the hydraulic turbine generator speed regulator commonly used at present all adopts oil pressure control system, and its physical dimension is big, and working flow is big.
The model utility content
The utility model provides a kind of and can provide accurately, the full-automatic electro-hydraulic proportional control system of reliable parameter.
Realize the full-automatic electro-hydraulic proportional control system of the utility model purpose, comprise automatic oil recharging device, electric liquid parallel connection ratio following control system, the restricting means of overrunning, subsection and closed device and hydraulic lock assembly, link to each other successively; Said electric liquid parallel connection ratio following control system comprises manually group of digital control plug-in mounting group, minor swing proportional servo group and fine setting, links to each other successively.
Said automatic oil recharging device comprises motor, oil pump, accumulator and pressure test device, links to each other successively.
Said digital control plug-in mounting group comprises solenoid directional control valve and plug-in mounting control valve.
Said minor swing proportional servo group comprises solenoid directional control valve and electro-hydraulic proportion reversing valve.
Said fine setting manually group comprises hand-operated direction valve.
The said restricting means of overrunning comprises pilot operated directional control valve and relief valve.
Said subsection and closed device comprises one-way throttle valve and solenoid directional control valve.
Said hydraulic lock assembly comprises solenoid directional control valve and pressure relay.
The beneficial effect of the utility model is following:
1, the full-automatic electro-hydraulic proportional control system of the utility model is to the design of large-sized water turbine generator speed regulator; This system is power source with the high pressure oil pump; The working pressure of system is designed to 18Mpa, and maximum operating work can reach 125000NM, and native system is compared conventional oil pressure control system; Its physical dimension is dwindled greatly, and the working flow of system also reduces greatly.
2, aspect hydraulic control; Owing to adopted electric liquid parallel connection ratio following control system, the restricting means of overrunning, subsection and closed device and dual hydraulic locking device etc., each control unit is carried out sufficient optimum organization, its major control element has adopted the hydraulic element of standard universal; Making the interchangeability of functional reliability, the element of system compare the prior oil pressure control system has had greatly and has improved; Safeguard that use is very convenient, adopted automatic ftercompction energy storage apparatus simultaneously, the ftercompction time is shorter; Ftercompction prolongs blanking time greatly, and dwell time and performance are greatly improved.
Description of drawings
Fig. 1 is the structural representation of the full-automatic electro-hydraulic proportional control system of the utility model.
Embodiment
The embodiment of the utility model is following:
As shown in Figure 1, the full-automatic electro-hydraulic proportional control system of the utility model comprises automatic oil recharging device 1, electric liquid parallel connection ratio following control system, the restricting means 5 of overrunning, subsection and closed device 6 and hydraulic lock assembly 7, links to each other successively; Said electric liquid parallel connection ratio following control system comprises manually group 4 of digital control plug-in mounting group 2, minor swing proportional servo group 3 and fine setting, links to each other successively.
Said automatic oil recharging device 1 comprises motor 11, oil pump 12, accumulator 9 and pressure test device 10, links to each other successively.Said digital control plug-in mounting group 2 comprises solenoid directional control valve 13.1,13.2 and plug-in mounting control valve 14.1,14.2,14.3,14.4.Said minor swing proportional servo group 3 comprises solenoid directional control valve 16 and electro-hydraulic proportion reversing valve 18.Said fine setting manually group 4 comprises hand-operated direction valve 19.
The said restricting means 5 of overrunning comprises pilot operated directional control valve 21.1,21.2 and relief valve 8.Said subsection and closed device 6 comprises one-way throttle valve 24 and solenoid directional control valve 23.Said hydraulic lock assembly 7 comprises solenoid directional control valve 25 and pressure relay 26.
The working principle of the full-automatic electro-hydraulic proportional control system of the utility model is following:
Native system action power mainly is to lean on accumulator to provide for 9 groups, and high Oil pump electrical machinery is for 11 groups to be used for ftercompction, so not only can reduce the motor 11 and oil pump capacity configuration of system, and can also satisfy required big traffic requirement of system's moment.When system pressure was lower than 15.5MPa, pressure meter switch 10.1 was posted a letter, and oil pump 12 starts to 9 groups of ftercompctions of accumulator, when pressure reaches 18.0Mpa; Pressure meter switch 10.2 is posted a letter, and oil pump 12 stops to accomplish ftercompction, when system breaks down, and hypotony (14.5Mpa) or too high (18.5Mpa); Then pressure meter switch 10.3 is posted a letter, and speed regulator cuts out, and system quits work; System at first carries out self-check, shows fault, and the maintenance man fixes a breakdown according to demonstration.
Control valve group part mainly satisfies great fluctuation process, minor swing, and four kinds of operating state requirements are shut down in manual fine-tuning and emergency cut-off.
The great fluctuation process state:
1. open fast: solenoid directional control valve 13.1 gets electric, and plug-in mounting control valve 14.1,14.3 is opened, and oil cylinder is opened fast.
2. quick closedown: solenoid directional control valve 13.2 gets electric, and plug-in mounting control valve 14.2,14.4 is opened, the oil cylinder quick closedown.
The minor swing state:
This action is divided into manually and automatic two kinds of patterns, and it assigns to control through electrical control division, and when solenoid directional control valve 16 was in left position, system was in auto state, and when solenoid directional control valve 16 was in right end position, system was in manual state.
Manual fine-tuning:
Hand-operated direction valve 19 can make oil cylinder carry out the open and close action, and this state is mainly used in debugging and emergency is used.
Automatic speed regulation:
When this system is in auto state; Electric control system is according to the frequency and the oil cylinder displacement transducer feedback signal of electrical network; Through COMPUTER CALCULATION and comparison; Output a control signal to the power amplifier of electro-hydraulic proportion reversing valve 18, control, thereby reach the aperture of controlling oil cylinder through amplifier Comparative Examples servovalve.
Excessive or current are excessive when the oil cylinder aperture, cause water turbine macro-axis rotating speed too fast, the relief valve 8 Stroke Control valve events of the restricting means 5 of overrunning, control pilot operated directional control valve 21.1 are transformed into closed condition; Control pilot operated directional control valve 21.2 simultaneously and change to open mode, make oil cylinder be in the state of pass, thereby reduce current; Reach the purpose of deceleration; After the macro-axis rotating speed reduced, relief valve 8 can automatically reset, and speed regulator recovers normal working.
The speed that subsection and closed device 6 mainly is used for controlling speed regulator when closing, to reduce the impact that load changing causes, it is to post a letter through the position switch that is installed on the oil cylinder, control one-way throttle valve 23 carries out throttling, reaches control oil cylinder closing velocity and time.
When speed regulator is shut down; Hydraulic lock assembly 7 makes system be in the locking closed condition, if will open oil cylinder, must make solenoid directional control valve 25 be in released state earlier; System could open; But 7 lockings of hydraulic lock assembly opening direction does not lock closing direction, and design mainly is for security consideration like this.
In addition, pressure, temperature and the liquid level of native system under various working staties is equipped with the sensor acquisition signal, and monitors and control through computer, if automatic display alarm of calculation of fault chance or shutdown system are arranged, reminds the maintenance man to handle.
Embodiment recited above describes the preferred implementation of the utility model; Be not that scope to the utility model limits; Design under the spiritual prerequisite not breaking away from the utility model; Various distortion and improvement that the common engineers and technicians in related domain make the utility model technological scheme all should fall in the protection domain that claims of the utility model confirm.
Claims (8)
1. a full-automatic electro-hydraulic proportional control system is characterized in that: comprise automatic oil recharging device, electric liquid parallel connection ratio following control system, the restricting means of overrunning, subsection and closed device and hydraulic lock assembly, link to each other successively; Said electric liquid parallel connection ratio following control system comprises manually group of digital control plug-in mounting group, minor swing proportional servo group and fine setting, links to each other successively.
2. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said automatic oil recharging device comprises motor, oil pump, accumulator and pressure test device, links to each other successively.
3. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said digital control plug-in mounting group comprises solenoid directional control valve and plug-in mounting control valve.
4. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said minor swing proportional servo group comprises solenoid directional control valve and electro-hydraulic proportion reversing valve.
5. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said fine setting manually group comprises hand-operated direction valve.
6. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: the said restricting means of overrunning comprises pilot operated directional control valve and relief valve.
7. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said subsection and closed device comprises one-way throttle valve and solenoid directional control valve.
8. full-automatic electro-hydraulic proportional control system according to claim 1 is characterized in that: said hydraulic lock assembly comprises solenoid directional control valve and pressure relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203275953U CN202203033U (en) | 2011-08-28 | 2011-08-28 | Full-automatic electro-hydraulic proportional control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203275953U CN202203033U (en) | 2011-08-28 | 2011-08-28 | Full-automatic electro-hydraulic proportional control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202203033U true CN202203033U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203275953U Expired - Fee Related CN202203033U (en) | 2011-08-28 | 2011-08-28 | Full-automatic electro-hydraulic proportional control system |
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| Country | Link |
|---|---|
| CN (1) | CN202203033U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524640A (en) * | 2017-09-27 | 2017-12-29 | 国网福建省电力有限公司 | Movable propeller turbine runner tests electrohydraulic control method and device |
-
2011
- 2011-08-28 CN CN2011203275953U patent/CN202203033U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107524640A (en) * | 2017-09-27 | 2017-12-29 | 国网福建省电力有限公司 | Movable propeller turbine runner tests electrohydraulic control method and device |
| CN107524640B (en) * | 2017-09-27 | 2023-11-03 | 国网福建省电力有限公司 | Electrohydraulic control method and device for rotating wheel test of axial flow turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: WUHAN WINMIND TECHNOLOGY CO., LTD. Free format text: FORMER NAME: WUHAN WINMIND TECHNOLOGY DEVELOPMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 430223 Hubei city of Wuhan province East Lake high tech Development Zone canglongdao Science Park Nine Phoenix Street No. 6 Patentee after: Wuhan Winmind Technology Co., Ltd. Address before: 430223 Hubei city of Wuhan province East Lake high tech Development Zone canglongdao Science Park Nine Phoenix Street No. 6 Patentee before: Wuhan Winmind Technology Development Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20180828 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |