CN202611777U - System for reversely driving force driving execution mechanism by integrated electric hydraulic executor - Google Patents
System for reversely driving force driving execution mechanism by integrated electric hydraulic executor Download PDFInfo
- Publication number
- CN202611777U CN202611777U CN 201220187858 CN201220187858U CN202611777U CN 202611777 U CN202611777 U CN 202611777U CN 201220187858 CN201220187858 CN 201220187858 CN 201220187858 U CN201220187858 U CN 201220187858U CN 202611777 U CN202611777 U CN 202611777U
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- pilot valve
- oil
- electric hydraulic
- execution mechanism
- oil cylinder
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Abstract
The utility model provides a system for reversely driving a force driving execution mechanism by an integrated electric hydraulic executor, which solves the problems that the adjusting quality of an electric hydraulic control system of a steam turbine is influenced by oil quality, oil pressure fluctuation and the like of the system, the failure ratio is relatively high and the maintenance work load is large because the electric hydraulic control system of the steam turbine adopts a hydraulic amplification execution mechanism to hydraulically transmit control signals. The key point is that the force driving execution mechanism is used for mechanically transmitting control signals, so that the electric hydraulic control system of the steam turbine is implemented. The system for reversely driving the force driving execution mechanism by the integrated electric hydraulic executor has the benefits that the adjusting quality of the control system of the steam turbine is not influenced by oil quality, oil pressure fluctuation and the like of the system, so the system has high stability, high anti-jamming capability and small maintenance work load, and is applicable to a steam turbine adjusting system with a pilot valve slide valve with action direction opposite to that of a piston of an oil cylinder.
Description
Technical field
The utility model relates to a kind of electrohydraulic steam turbine controlling system (DEH), is the system of integrating electro-hydraulic actuator reverse actuating force driving execution mechanism specifically.
Background technique
Electrohydraulic steam turbine controlling system is made up of electronic speed regulator, electric liquid conversion equipment, hydraulic pressure amplification actuator, adjusting porthole, protective gear, oil supply system.Adopt the hydraulic pressure transfer control signal, its regulation quality is subject to influences such as system's oil, pressure fluctuation, and rate of fault is higher relatively, and maintenance workload is bigger.
Summary of the invention
For solving the problems of the technologies described above, the purpose of the utility model is to provide the system of a kind of integrating electro-hydraulic actuator reverse actuating force driving execution mechanism.
The purpose of the utility model is achieved in that it has electronic speed regulator and Steam Turhine Adjustment porthole; It is characterized in that: integrating electro-hydraulic actuator receives the signal of electronic speed regulator; The left end of balanced lever 4 is hinged through the output shaft 3 of the first guide sleeve A and integrating electro-hydraulic actuator 2; The right-hand member of balanced lever 4 connects with oil cylinder 8 piston rods 10 through slider roller C; The fulcrum of balanced lever is hinged through the upper end of the second guide sleeve B and controlling rod 5, and the fulcrum of balanced lever is near apart from the output shaft articulating point of integrating electro-hydraulic actuator, and controlling rod 5 acts on pilot valve 6 guiding valves 7 tops.Pressure oil acts on pilot valve guiding valve 7 tops, and pressure oil acts on pilot valve guiding valve 7 bottoms through throttling arrangement 18,19 dividing potential drops.On pilot valve guiding valve 7 structural designs, guarantee that pilot valve bottom oil pressure active force is greater than top oil pressure active force.The oil cylinder piston bar is hinged through the left end (force bearing point) of the first universal joint D and actuating linkage 11; Another force bearing point of actuating linkage is hinged through 13 bars 12 of the second universal joint E and adjusting porthole; The fulcrum F of actuating linkage is in the outside; Distance between first and second universal joints is greater than the distance between second universal joint and the actuating linkage fulcrum; Be that the distance that F is ordered to E arrives the distance that D is ordered less than E, the last hydraulic fluid port 14 of pilot valve side docks with the rod chamber hydraulic fluid port 15 of oil cylinder 8, and the following hydraulic fluid port 16 of pilot valve side docks with the rodless cavity hydraulic fluid port 17 of oil cylinder.
Compared with prior art, the beneficial effect of the utility model is: it adopts the mechanical force transfer control signal, and DEH system regulation quality is not influenced by system's oil, pressure fluctuation etc., and stability is high, antijamming capability is strong, the system maintenance work amount is little.Be applicable to the regulating system of pilot valve guiding valve and oil cylinder piston direction of action.
Description of drawings
Further specify the utility model below in conjunction with accompanying drawing.
Fig. 1 is the structural representation of the utility model.
Embodiment
The left end of balanced lever 4 is hinged through the output shaft 3 of the first guide sleeve A and integrating electro-hydraulic actuator 2; The right-hand member of balanced lever 4 connects with oil cylinder 8 piston rods 10 through slider roller C; The fulcrum of balanced lever is hinged through the upper end of the second guide sleeve B and controlling rod 5; The fulcrum of balanced lever is near apart from the output shaft articulating point of integrating electro-hydraulic actuator, and controlling rod 5 acts on pilot valve 6 guiding valves 7 tops.Pressure oil acts on pilot valve guiding valve 7 tops, and pressure oil acts on pilot valve guiding valve 7 bottoms through throttling arrangement 18,19 dividing potential drops.On pilot valve guiding valve 7 structural designs, guarantee that pilot valve bottom oil pressure active force is greater than top oil pressure active force.The oil cylinder piston bar is hinged through the left end (force bearing point) of the first universal joint D and actuating linkage 11; Another force bearing point of actuating linkage is hinged through 13 bars 12 of the second universal joint E and adjusting porthole; The fulcrum F of actuating linkage is in the outside; Distance between first and second universal joints is greater than the distance between second universal joint and the actuating linkage fulcrum; Be that the distance that F is ordered to E arrives the distance that D is ordered less than E, the last hydraulic fluid port 14 of pilot valve side docks with the rod chamber hydraulic fluid port 15 of oil cylinder 8, and the following hydraulic fluid port 16 of pilot valve side docks with the rodless cavity hydraulic fluid port 17 of oil cylinder.
Working procedure is: the steam turbine that integrating electro-hydraulic actuator 2 reception electronic speed regulators 1 send rises rotary speed instruction; As the input end output mechanical force of power driving execution mechanism, downward linear displacement; Act on the balanced lever 4 through output shaft 3; Making balanced lever 4 is that fulcrum moves down with oil cylinder piston bar 10 slider roller C, and through controlling rod 5, makes pilot valve guiding valve 7 action Off center position downwards; Pressure oil gets into oil cylinder pistons 9 bottoms, oil cylinder 8 top hydraulic fluid ports 15 through 14 oil extractions of pilot valve 6 hydraulic fluid ports through pilot valve 6 hydraulic fluid ports 16, oil cylinder 8 hydraulic fluid ports 17, and oil cylinder 8 pistons 9 move under the effect of its pressure reduction.In the process of on oil cylinder piston bar 10, moving; Balanced lever 4 is that fulcrum moves up with integrating electro-hydraulic actuator 2 first guide sleeve A, makes pilot valve guiding valve 7 be back to the central position, simultaneously; Actuating linkage 11 is a fulcrum with universal joint F; Through the first universal joint D it is upwards moved and open big adjusting porthole 13, increase the steam turbine air inflow, promote turbine speed.The actual measurement turbine speed, and feed back to electronic speed regulator 1, make system reach new state of equilibrium, accomplish the rotational speed regulation process.Vice versa.When unit broke down, the steam turbine protection action lost efficacy integrating electro-hydraulic actuator 2 through OPC electromagnetic valve group 20; Under the effect of pilot valve guiding valve 7 bottom oil pressures; Make pilot valve guiding valve 7 upwards move the Off center position fast, close rapidly and regulate porthole 13, implement emergency shutdown.
Claims (1)
1. the system of an integrating electro-hydraulic actuator reverse actuating force driving execution mechanism; It has electronic speed regulator and Steam Turhine Adjustment porthole; It is characterized in that: integrating electro-hydraulic actuator receives the signal of electronic speed regulator; The left end of balanced lever is hinged through the output shaft of first guide sleeve and integrating electro-hydraulic actuator, and the right-hand member of balanced lever connects with the oil cylinder piston bar through slider roller, and the fulcrum of balanced lever is hinged through the upper end of second guide sleeve and controlling rod; The fulcrum of balanced lever is near apart from the output shaft articulating point of integrating electro-hydraulic actuator, and controlling rod acts on pilot valve guiding valve top; Pressure oil acts on pilot valve guiding valve top, and pressure oil acts on pilot valve guiding valve bottom through the throttling arrangement dividing potential drop; In the design of pilot valve sliding valve structure, guarantee that pilot valve bottom oil pressure active force is greater than top oil pressure active force; The oil cylinder piston bar is hinged through a force bearing point of the left end of first universal joint and actuating linkage; Another force bearing point of actuating linkage is hinged with adjusting porthole door bar through second universal joint; The fulcrum of actuating linkage is in the outside; Distance between first and second universal joints is greater than the distance between second universal joint and the actuating linkage fulcrum, and the last hydraulic fluid port of pilot valve side docks with the rod chamber hydraulic fluid port of oil cylinder, and the following hydraulic fluid port of pilot valve side docks with the rodless cavity hydraulic fluid port of oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187858 CN202611777U (en) | 2012-04-28 | 2012-04-28 | System for reversely driving force driving execution mechanism by integrated electric hydraulic executor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220187858 CN202611777U (en) | 2012-04-28 | 2012-04-28 | System for reversely driving force driving execution mechanism by integrated electric hydraulic executor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611777U true CN202611777U (en) | 2012-12-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220187858 Expired - Fee Related CN202611777U (en) | 2012-04-28 | 2012-04-28 | System for reversely driving force driving execution mechanism by integrated electric hydraulic executor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114879A (en) * | 2013-03-01 | 2013-05-22 | 辽宁电力控制技术有限公司 | Oil motivator in stream turbine adjusting system |
-
2012
- 2012-04-28 CN CN 201220187858 patent/CN202611777U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114879A (en) * | 2013-03-01 | 2013-05-22 | 辽宁电力控制技术有限公司 | Oil motivator in stream turbine adjusting system |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20190428 |