CN104265545B - Turbine gate mechanism integrated oscillating type servomotor - Google Patents
Turbine gate mechanism integrated oscillating type servomotor Download PDFInfo
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- CN104265545B CN104265545B CN201410477177.0A CN201410477177A CN104265545B CN 104265545 B CN104265545 B CN 104265545B CN 201410477177 A CN201410477177 A CN 201410477177A CN 104265545 B CN104265545 B CN 104265545B
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- China
- Prior art keywords
- servo electric
- electric jar
- pull bar
- servomotor
- vertical axis
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/16—Stators
- F03B3/18—Stator blades; Guide conduits or vanes, e.g. adjustable
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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
Abstract
The invention discloses a kind of turbine gate mechanism integrated oscillating type servomotor, comprise actuating motor, servo electric jar, pull bar and base, driven by servomotor servo electric jar; Pull bar one end is located in servo electric jar and is established on piston, and its other end passes outside servo electric jar, and one end that pull bar is positioned at outside servo electric jar connects connecting lever, connecting lever the other end connection control ring; Be provided with vertical axis bottom servo electric jar, servo electric jar is placed on base by radial-thrust bearing, base has the curve bath mated with vertical axis size with vertical axis corresponding position, and vertical axis is through curve bath.Level of integration of the present invention is high, structure is simple, working efficiency is high, control accurate, be convenient to integrate Modern Motion Control technology, Numeric Control Technology and bus (network) technology, realize sequencing, bus (network) changes control, effectively can complete the keying control work of turbine gate mechanism, be applicable to large, medium and small conventional hydropower station unit and pumped storage power station unit.
Description
Technical field
the invention belongs to turbine technology field, be specifically related to a kind of turbine gate mechanism integrated oscillating type servomotor.
Background technique
servomotor, as the power unit in turbine gate mechanism transmission system, is the actuator of speed regulator, and the quality of its service behaviour is related to the safety and stability reliable operation of Hydropower Plant.Tradition servomotor is that one is made up of single straight-cylinder and piston, is called for short straight-cylinder servomotor.When water turbine load changes, the pressure oil controlled by speed regulator main control valve enters the oil cylinder pushing servomotor piston of servomotor; When the piston is moving, control ring is rotated by pull bar; Control ring reaches the object controlling stator (or nozzle needle, blade, jet deflector) again by connecting rod, pivoted arm.
there are following shortcomings and deficiencies in tradition straight-cylinder servomotor: (1) piston moving linearly in cylinder body, and pull bar relatively rotates around piston and realizes being connected of the straight line motion of piston and the circular motion of control ring.Due to the swing of pull bar in cylinder body, make the push/pull power of piston action on pull bar and pull bar straight line motion not in the same direction, i.e. only some has been applied on stator the output power of piston, and separately some power is fallen by autophage.This can reduce the efficiency of servomotor on the one hand, increases energy consumption; Make piston stressed unreasonable on the other hand, easily cause it and produce the problems such as distortion, jam, leakage of oil; (2) Hydrauservo System is adopted, this system is difficult to realize the precise hard_drawn tuhes to thrust, speed and position, also be not easy to, with the associating of modern movement control technology, Numeric Control Technology and bus (network) Integration ofTechnology, realize the sequencing of servomotor, bus (network) changes control simultaneously; (3) because (1), (2) two point defects are with not enough, cause the measurement of servomotor stroke comparatively difficult, so general uneasiness puts stroke measurment and feedback means on traditional servomotor, be not easy to the adjustment of speed regulator for unit operation.
the above shortcomings and deficiencies of tradition servomotor, constrain the performance of speed regulator function.Therefore, for realizing safe, reliable, quick, the sensitive control of turbine gate mechanism, being necessary to overcome above shortcomings and deficiencies, designing more advanced, more practical and more efficient servomotor.
Summary of the invention
for the deficiency that prior art exists, the invention provides a kind of turbine gate mechanism integrated oscillating type servomotor, this servomotor is under the prerequisite ensureing the circular motion of control ring and the straight line motion reasonable link of pull bar, servomotor efficiency can also be significantly improved, improve pull bar stress condition, improve the control precision of servomotor.
in order to solve the problems of the technologies described above, the present invention adopts following technological scheme:
turbine gate mechanism integrated oscillating type servomotor, comprises actuating motor, servo electric jar, pull bar and base, driven by servomotor servo electric jar; Pull bar one end is located in servo electric jar and is established on piston, and its other end passes outside servo electric jar, and one end that pull bar is positioned at outside servo electric jar connects connecting lever, connecting lever the other end connection control ring; Be provided with vertical axis bottom servo electric jar, servo electric jar is placed on base by radial-thrust bearing, base has the curve bath mated with vertical axis size with vertical axis corresponding position, and vertical axis is through curve bath.
one end that above-mentioned pull bar is positioned at outside servo electric jar is connected with connecting lever by the jaw pin of jaw and coupling.
above-mentioned connecting lever or control ring are provided with position limit pin and limit sensors.
for realizing precision measuremnt and the feedback of servomotor stroke, also stroke sensor is comprised in preferred version of the present invention, described stroke sensor comprises stroke sensor cylinder body and is located at the stroke lever of stroke sensor cylinder body termination, stroke sensor cylinder body is located on servo electric jar, and stroke lever and pull bar are synchronized with the movement.
above-mentioned stroke lever is parallel with pull bar, and the termination that stroke lever is not connected with stroke sensor cylinder body is fixedly connected with pull bar.
compare with traditional straight-cylinder servomotor, the present invention has following features and beneficial effect:
1, the thrust that in servomotor of the present invention, pull bar is subject to is consistent with pull bar linear movement direction all the time with pulling force, capable of reducing energy consumption on the one hand, improves servomotor efficiency; On the other hand, make pull bar have good stress condition, avoid owing to accepting the unreasonable phenomenon such as piston distortion, jam, leakage of oil caused.
2, adopt electrical servo system, the precise hard_drawn tuhes of the push-pull effort to pull bar, speed and position can be realized.
3, adopt stroke sensor to realize the real-time measurement of servomotor stroke, be convenient to regulate speed regulator according to actual conditions.
4, structure is simple, level of integration is high, working efficiency is high, control accurate, be convenient to integrate Modern Motion Control technology, Numeric Control Technology and bus (network) technology, realize sequencing, bus (network) changes control, effectively can complete the keying control work of turbine gate mechanism, be applicable to large, medium and small conventional hydropower station unit and pumped storage power station unit.
Accompanying drawing explanation
fig. 1 is the concrete structure schematic diagram of servomotor of the present invention;
fig. 2 is the plan view of servomotor in Fig. 1;
fig. 3 is the side view of servomotor in Fig. 1;
fig. 4 is the bottom view of servomotor in Fig. 1.
in figure, 1-actuating motor, 2-servo electric jar, 3-pull bar, 4-stroke sensor cylinder body, 5-stroke lever, 6-jaw, 7-jaw pin, 8-connecting lever, 9-position limit pin, 10-control ring, 11-base, 12-vertical axis, 13-curve bath, 14-radial-thrust bearing, 15-signaling line, 16-limit sensors.
Embodiment
technical solution of the present invention is further illustrated below in conjunction with accompanying drawing.
see Fig. 1 ~ 4, in this concrete enforcement, servomotor comprises actuating motor (1), servo electric jar (2), pull bar (3), stroke sensor and base (11), and stroke sensor comprises stroke sensor cylinder body (4) and is located at the stroke lever (5) of stroke sensor cylinder body (4) termination.Actuating motor (1), servo electric jar (2), pull bar (3) connect in turn, and three's central axis conllinear.Actuating motor (1) is positioned at servomotor rear portion, pull bar (3) is positioned at servomotor front portion, servo electric jar (2) is placed in the middle, its two ends connect actuating motor (1) and pull bar (3) respectively, actuating motor (1) is used for driving servo electric jar (2), pull bar (3) one end is located at and is established on piston in servo electric jar (2), and the other end passes servo electric jar (2) outward.
stroke sensor cylinder body (4) is fixed on servo electric jar (2) top, one end that stroke lever (5) is not connected with stroke sensor cylinder body (4) is fixed on pull bar (3) and is positioned at servo electric jar (2) one end outward, when pull bar (3) straight line motion, stroke lever (5) is synchronized with the movement with pull bar (3), stroke lever (5) stroke and pull bar (3) stroke.During servomotor work, actuating motor (1) is relative fixing with the position of servo electric jar (2), and then actuating motor (1) and servo electric jar (2) do linear telescopic motion to pull bar (3) relatively.
servo electric jar (2) bottom end is provided with vertical axis (12), base (11) is gone up and vertical axis (12) corresponding position offers curve bath (13), curve bath (13) is slightly larger than vertical axis (12) diameter, servo electric jar (2) is placed on base (11) by radial-thrust bearing (14), radial-thrust bearing (14) is positioned at servo electric jar (2) bottom front, is located at the vertical axis (12) of servo electric jar (2) base end through curve bath (13).Servo electric jar (2) can swing around radial-thrust bearing (14) respect thereto (11), and curve bath (13) is used for the Integral swinging of regular servomotor around radial-thrust bearing (14).
pull bar (3) end connects connecting lever (8), connecting lever (8) the other end connection control ring (10) by the jaw pin (7) of jaw (6) and coupling, and control ring (10) also connects connecting rod and pivoted arm, drives stator to rotate by connecting rod and pivoted arm.
image data is fed back to controller by signaling line (15) by stroke sensor, obtains real-time stroke based on feedback data, and can adjust speed regulator order according to feedback data.
as preferably, position limit pin (9) and limit sensors (16) can be set on connecting lever (8) or control ring (10), push away to avoid the mistake of servomotor and cross and draw, thus cause the damage of stator.
the working principle of servomotor of the present invention is as follows:
when water turbine load changes, assigned the characteristics of motion of pull bar to stroke sensor by speed regulator, i.e. the relation of stroke and time.Actuating motor is according to the characteristics of motion of pull bar, by the electric drive system in servo electric jar and linear actuator, the rotary motion of actuating motor is converted to the straight line motion of pull bar by the mechanical motion of screw mandrel and screw pair, the closed loop control characteristic of recycling actuating motor, carries out precise hard_drawn tuhes to thrust, speed and position.While pull bar relative servo electric jar moving linearly promotion connecting lever does circular motion, servo electric jar can swing, to realize the conversion of straight line motion to connecting lever circular motion and the transmission of push-pull effort of pull bar by automatic routing axial thrust bearing.
in said process, the thrust that pull bar is subject to and pulling force are consistent with pull bar linear movement direction all the time, therefore pull bar stress condition is good, can improve actuating motor working efficiency, reduce energy consumption.
Claims (5)
1. turbine gate mechanism integrated oscillating type servomotor, is characterized in that, comprising:
Actuating motor, servo electric jar, pull bar and base, driven by servomotor servo electric jar; Pull bar one end is located in servo electric jar and is established on piston, and its other end passes outside servo electric jar, and one end that pull bar is positioned at outside servo electric jar connects connecting lever, connecting lever the other end connection control ring; Be provided with vertical axis bottom servo electric jar, servo electric jar is placed on base by radial-thrust bearing, base has the curve bath mated with vertical axis size with vertical axis corresponding position, and vertical axis is through curve bath.
2. turbine gate mechanism integrated oscillating type servomotor as claimed in claim 1, is characterized in that:
One end that described pull bar is positioned at outside servo electric jar is connected with connecting lever by the jaw pin of jaw and coupling.
3. turbine gate mechanism integrated oscillating type servomotor as claimed in claim 1, is characterized in that:
Described connecting lever or control ring are provided with position limit pin and limit sensors.
4. turbine gate mechanism integrated oscillating type servomotor as claimed in claim 1, is characterized in that:
Also comprise stroke sensor, described stroke sensor comprises stroke sensor cylinder body and is located at the stroke lever of stroke sensor cylinder body termination, and stroke sensor cylinder body is located on servo electric jar, and stroke lever and pull bar are synchronized with the movement.
5. turbine gate mechanism integrated oscillating type servomotor as claimed in claim 4, is characterized in that:
Described stroke lever is parallel with pull bar, and the termination be not connected with stroke sensor cylinder body of stroke lever is fixedly connected with pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477177.0A CN104265545B (en) | 2014-09-18 | 2014-09-18 | Turbine gate mechanism integrated oscillating type servomotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410477177.0A CN104265545B (en) | 2014-09-18 | 2014-09-18 | Turbine gate mechanism integrated oscillating type servomotor |
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| Publication Number | Publication Date |
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| CN104265545A CN104265545A (en) | 2015-01-07 |
| CN104265545B true CN104265545B (en) | 2016-04-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110212814B (en) * | 2019-05-13 | 2020-11-03 | 湖北三江航天红林探控有限公司 | Dual-motor driven load synchronous control system and control method |
| CN112096555B (en) * | 2020-09-29 | 2022-08-02 | 深圳市科中云技术有限公司 | Device, circuit and method for measuring opening degree of guide vane, terminal and storage medium |
Citations (7)
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| JP2001271734A (en) * | 2001-02-19 | 2001-10-05 | Hitachi Ltd | Guide blade opening and closing device at hydraulic power station |
| CN201258814Y (en) * | 2008-09-18 | 2009-06-17 | 天津市天发重型水电设备制造有限公司 | Assembling structure of water guide mechanism servo for hydroturbine |
| CN201433848Y (en) * | 2009-06-16 | 2010-03-31 | 东方电气集团东方电机有限公司 | Full-digital integrated cylindrical valve digital quantization tank |
| CN201588731U (en) * | 2009-04-28 | 2010-09-22 | 湖南雪峰机电设备制造有限公司 | Water turbine speed regulating control mechanism |
| CN201934250U (en) * | 2010-12-01 | 2011-08-17 | 常州液压成套设备厂有限公司 | Servomotor for water wheel generating set |
| CN203430685U (en) * | 2013-08-19 | 2014-02-12 | 常州液压成套设备厂有限公司 | Water distributor servomotor with mechanical locking |
| CN204099107U (en) * | 2014-09-18 | 2015-01-14 | 武汉大学 | Turbine gate mechanism integrated oscillating type servomotor |
-
2014
- 2014-09-18 CN CN201410477177.0A patent/CN104265545B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001271734A (en) * | 2001-02-19 | 2001-10-05 | Hitachi Ltd | Guide blade opening and closing device at hydraulic power station |
| CN201258814Y (en) * | 2008-09-18 | 2009-06-17 | 天津市天发重型水电设备制造有限公司 | Assembling structure of water guide mechanism servo for hydroturbine |
| CN201588731U (en) * | 2009-04-28 | 2010-09-22 | 湖南雪峰机电设备制造有限公司 | Water turbine speed regulating control mechanism |
| CN201433848Y (en) * | 2009-06-16 | 2010-03-31 | 东方电气集团东方电机有限公司 | Full-digital integrated cylindrical valve digital quantization tank |
| CN201934250U (en) * | 2010-12-01 | 2011-08-17 | 常州液压成套设备厂有限公司 | Servomotor for water wheel generating set |
| CN203430685U (en) * | 2013-08-19 | 2014-02-12 | 常州液压成套设备厂有限公司 | Water distributor servomotor with mechanical locking |
| CN204099107U (en) * | 2014-09-18 | 2015-01-14 | 武汉大学 | Turbine gate mechanism integrated oscillating type servomotor |
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| CN104265545A (en) | 2015-01-07 |
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