CN2324308Y - Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine - Google Patents
Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine Download PDFInfo
- Publication number
- CN2324308Y CN2324308Y CN96239747U CN96239747U CN2324308Y CN 2324308 Y CN2324308 Y CN 2324308Y CN 96239747 U CN96239747 U CN 96239747U CN 96239747 U CN96239747 U CN 96239747U CN 2324308 Y CN2324308 Y CN 2324308Y
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- Prior art keywords
- valve
- servo
- servo device
- valve control
- cylinder
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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 electric valve control cylinder type electro-hydraulic servo device for speed regulators for hydraulic turbines. Only one stage of hydraulic amplification is provided, the left ends of the servo valves (7, 8, 9) of the utility model are provided with an emergency stop electromagnetic valve (5), an electromagnetic gun (3), a spring (4), and a pressure regulating cap (2), and the pressure regulating cap and a position feedback lever (1) are guaranteed to contact with each other. The right ends of the servo valves are provided with electric servo devices (11, 12, 13, 14, 16, 17), and the servo valves are fixed on oil cylinders (19, 20) via an integrated plate (21) provided with two one-way throttle valves (18) to form valve control cylinders (7, 8, 9, 18, 21, 19, 20, 1) and then are integrated with the servo device into integration to form an electric valve control cylinder type device. The utility model is matched with an electrical control device to form an electro-hydraulic speed regulator for hydraulic turbines.
Description
The utility model relates to a kind of electric valve control cylinder formula electrohydraulic servo device of hydrogovernor.
Present middle-size and small-size water turbine electrohydraulic governor mostly adopts electro-control converter to amplify the rear driving oil cylinder through multistage hydraulic, realizes the control to turbine gate mechanism.The electro-control converter oil consumption is big, and poor reliability, and the multistage hydraulic element makes the speed control system complex structure, the manufacture cost height.Therefore, restricted the development of middle-size and small-size hydrogovernor.
Task of the present utility model is at the problems referred to above, the patent No. at us is that 95237196.0 " adopting the water turbine electrohydraulic governor of actuating motor control " and number of patent application are on the basis of 96234499.0 " the electronic integrated followup devices of hydrogovernor ", further exploitation, develop only have that one-level hydraulic pressure amplifies mainly by servo valve, integration plate, the valve-controlled cylinder that oil cylinder constitutes, and with the electrical servo device integrated directly control the electric valve control cylinder formula electrohydraulic servo device that valve-controlled cylinder promotes a kind of hydrogovernor of water distributor by the electrical servo device.
For realizing above-mentioned task, we have finished a kind of development of valve-controlled cylinder.Its feature is: adorn an emergency shutdown solenoid valve 5 that directly acts on valve pocket 7 at the servo valve left end that is made of sliding sleeve 7, spool 8, valve body 9, and the left end of valve pocket 7 connect one be with spring 4, the end is screwed with the electromagnetic gun 3 of adjustable pressure cap 2, and adjustable pressure cap 2 end faces is contacted with bearing on position feedback lever 1 one ends; End at the spool 8 of servo valve right-hand member is connected with bearing pin 10 with the threaded bush's 12 of the electrical servo device that is made of displacement transducer 11, threaded bush 12, drive lead screw 13, shaft coupling 14, actuating motor 16, feather key 17 a end.Utilizing integrated technology that above-mentioned servo valve is fixed on the one end with the integration plate 21 that two one-way throttle valves 18 are housed again is on the oil cylinder that is made of piston rod 19, cylinder body 20 that is connected with the other end of position feedback lever 1, forms a valve-controlled cylinder that is made of guiding valve 7, spool 8, valve body 9, one-way throttle valve 18, integration plate 21, piston rod 19, cylinder body 20, position feedback lever 1.It and the integrated formation electric valve control of electrical servo device cylinder formula device.
Described electric valve control cylinder is meant that the electrical servo device is mechanical straight-line displacement output control valve-controlled cylinder with the transform electric of accepting, and the displacement servo-actuated that makes piston 19 is in the output of electrical servo device, thereby the realization piston rod is controlled by electric signal.
The utility model has the advantages that simple in structurely, hydraulic pressure level of integration height is adjusted, operation, maintenance be all very convenient, also can improve reliability of operation simultaneously and reduce the cost of equipment.
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is structure working principle figure of the present utility model.
Among the figure, the oil inlet pipe of servo valve and emergency shutdown solenoid valve 5 is connected with pressure oil-source P through oil purifier 6.Actuating motor 16 is connected with the drive lead screw 13 that threaded bush 12 cooperates by shaft coupling 14, and when actuating motor or handwheel 15 positive and negative rotations, threaded bush 12 and spool 8 are done corresponding straight-line displacement under feather key 17 effects.Valve pocket 7 in the servo valve has oilhole and left and right motion valve body 9 in, the electromagnetic gun 3 that drive is connected with its left end and on the end face of adjustable pressure cap 2 contacting with bearing on the position feedback lever 1 under the effect of spring 4.
Described electromagnetic gun 3 is the iron core 3b that make with magnetostriction materials by, and thereon one section twines electromagnetic coil 3a, and with screw gland is fixed on the core ends and constitutes.This electromagnetic gun can produce vibration under magnetic force, be detained in order to overcome dirt.When servo valve was in stability, spool 8 was with the oilhole sealing of its valve pocket 7, and it is motionless that piston rod 19 is stablized.When spool 8 departs to the right under the effect of actuating motor 6 or handwheel 15, pressure oil enters right cavity of cylinder through control limit, one-way throttle valve 18, the oil in chamber, a left side is got back to fuel tank through another one-way throttle valve, piston rod 19 is promptly to the start lateral movement, its motion moves right valve pocket 7 by position feedback lever 1 again thereupon, advancing on valve pocket 7, oil drainage hole are closed again, and piston rod 19 is just stablized motionless.Otherwise when spool departed from certain distance left under actuating motor or handwheel effect, piston rod will be to shutdown lateral movement respective distance.
It is to be noted to be equipped with one-way throttle valve 18 on the oil circuit in oil cylinder two chambeies, to satisfy the different motion speed of the piston rod of adjusting oil cylinder.Under accident conditions, the action of emergency shutdown solenoid valve, valve pocket moves to right behind the cut-in pressure oil of chamber, a servo valve left side, and pressure oil enters chamber, an oil pocket left side, i.e. shutdown rapidly through the control limit.
Claims (2)
1. the electric valve control cylinder formula electrohydraulic servo device of a hydrogovernor only has one-level hydraulic pressure to amplify, mainly the electrical servo device that is made of displacement transducer, threaded bush, drive lead screw, shaft coupling, actuating motor, feather key; The servo valve that constitutes by valve pocket, spool, valve body and form by the oil cylinder that piston rod, cylinder body constitute, it is characterized in that: adorn an emergency shutdown solenoid valve (5) that directly acts on valve pocket (7) at servo valve (7,8,9) upper left quarter, and the left end of valve pocket (7) connect one be with spring (4), the end is screwed with the electromagnetic gun (3) of adjustable pressure cap (2), and adjustable pressure cap (2) is contacted with bearing on position feedback lever (1) one end; End at the spool (8) of servo valve right-hand member is connected with bearing pin (10) with the threaded bush's (12) of electrical servo device (11,12,13,14,16,17) a end; Again servo valve is fixed on the oil cylinder (19,20) that the one end is with the other end of position feedback lever (1) is connected with the integration plate (21) that two one-way throttle valves (18) are housed, constitute a valve-controlled cylinder (7,8,9,18,21,19,20,1), it and the integrated formation electric valve control of electrical servo device cylinder formula device.
2. electrohydraulic servo device as claimed in claim 1, it is characterized in that: described electromagnetic gun (3) is by an iron core made from magnetostriction materials (3b), one section twines electromagnetic coil (3a) thereon, and with screw gland is fixed on the core ends and constitutes, this electromagnetic gun can produce vibration, is detained in order to overcome dirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96239747U CN2324308Y (en) | 1996-11-15 | 1996-11-15 | Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96239747U CN2324308Y (en) | 1996-11-15 | 1996-11-15 | Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2324308Y true CN2324308Y (en) | 1999-06-16 |
Family
ID=33914710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96239747U Expired - Fee Related CN2324308Y (en) | 1996-11-15 | 1996-11-15 | Electric valve control cylinder type electrohydraulic servo device for speed regulator of hydroturbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2324308Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353110C (en) * | 2003-09-29 | 2007-12-05 | 爱信艾达株式会社 | Pressure control valve |
| CN100451355C (en) * | 2007-01-12 | 2009-01-14 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN103573734A (en) * | 2013-11-11 | 2014-02-12 | 山东理工大学 | Non-oil-return-port dry oil switch valve controlled through motor drive |
| CN104632739A (en) * | 2014-12-09 | 2015-05-20 | 西南石油大学 | Reversing valve with servo motor |
| CN104791332A (en) * | 2015-04-10 | 2015-07-22 | 中国航天科技集团公司烽火机械厂 | Electric-hydraulic servo system |
| CN104847732A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Valve-controlled cylinder system for unbalance load |
| CN106812761A (en) * | 2017-02-10 | 2017-06-09 | 武汉科技大学 | Crank block type feedback digital hydraulic cylinder |
| CN106958556A (en) * | 2017-04-17 | 2017-07-18 | 燕山大学 | A kind of integrated hydraulic driver and its control method for robot |
| CN108105195A (en) * | 2018-02-06 | 2018-06-01 | 北京亿美博科技有限公司 | A kind of mechanical electronic hydraulic digital servo valve |
-
1996
- 1996-11-15 CN CN96239747U patent/CN2324308Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100353110C (en) * | 2003-09-29 | 2007-12-05 | 爱信艾达株式会社 | Pressure control valve |
| CN100451355C (en) * | 2007-01-12 | 2009-01-14 | 路文忠 | Electrohydraulic servo oil cylinder and numerical control machine tool using same |
| CN103573734A (en) * | 2013-11-11 | 2014-02-12 | 山东理工大学 | Non-oil-return-port dry oil switch valve controlled through motor drive |
| CN103573734B (en) * | 2013-11-11 | 2015-12-30 | 山东理工大学 | Motoring control without return opening drier oil switch valve |
| CN104632739A (en) * | 2014-12-09 | 2015-05-20 | 西南石油大学 | Reversing valve with servo motor |
| CN104847732A (en) * | 2015-03-17 | 2015-08-19 | 北京理工大学 | Valve-controlled cylinder system for unbalance load |
| CN104791332A (en) * | 2015-04-10 | 2015-07-22 | 中国航天科技集团公司烽火机械厂 | Electric-hydraulic servo system |
| CN106812761A (en) * | 2017-02-10 | 2017-06-09 | 武汉科技大学 | Crank block type feedback digital hydraulic cylinder |
| CN106958556A (en) * | 2017-04-17 | 2017-07-18 | 燕山大学 | A kind of integrated hydraulic driver and its control method for robot |
| CN108105195A (en) * | 2018-02-06 | 2018-06-01 | 北京亿美博科技有限公司 | A kind of mechanical electronic hydraulic digital servo valve |
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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 |