CN2235513Y - Advanced type adjusting device for kaplan turbine - Google Patents
Advanced type adjusting device for kaplan turbine Download PDFInfo
- Publication number
- CN2235513Y CN2235513Y CN94218940U CN94218940U CN2235513Y CN 2235513 Y CN2235513 Y CN 2235513Y CN 94218940 U CN94218940 U CN 94218940U CN 94218940 U CN94218940 U CN 94218940U CN 2235513 Y CN2235513 Y CN 2235513Y
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- CN
- China
- Prior art keywords
- utility
- model
- mechanical
- mechanical transducer
- stepper motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- 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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- Hydraulic Turbines (AREA)
Abstract
The utility model belongs to an adjustor for a hydraulic turbine, comprising an electric monitoring unit, a drive unit, a step motor, a handwheel and a displacement sensor. The utility model is characterized in that the utility model also comprises a mechanical transducer whose one end is coaxially and mechanically connected with the rotating shaft of the step motor, the other end of the mechanical transducer is served as adjustor output, the mechanical transducer is composed of a shell body, a main shaft, a flange plate and an output sleeve, and the handwheel is mechanically connected with the other end of the rotating shaft of the step motor. Because the structure of the adjustor adopts the step motor and the mechanical transducer, the utility model has the advantages of simple structure, high reliability, high stability, no clamping and drifting phenomena, higher adjusting quality and no impact of the switchover of operating modes, and the utility model is fearless of power-fail when the utility model is operated. The utility model is suitable for adjusting and controlling the rotary speed of various hydraulic turbines.
Description
The utility model belongs to a kind of regulator, relates in particular to the water turbine step regulator.
Control to big-and-middle-sized rotational speed of water turbine is to control by stator (wheel blade) angle that changes on the water turbine, need very big power to promote and change stator (wheel blade) angle, therefore often all adopt a mechanical-hydraulic enlarger on the engineering, be that main control valve+main servomotor is finished, and main control valve is subjected to the control of Water-Turbine Engine Adaption device.
The regulator kind that is used to control rotational speed of water turbine at present is a lot, and mainly contain two kinds with regard to its structure: a kind of is old-fashioned mechanical-hydraulic regulator, and its working principle is by machine--and liquid servo-actuated pattern is carried out work; Another kind is new-type electric hydraulic regulator, its working principle is by--liquid servo-actuated pattern is carried out work (or by--machine servo-actuated+machine--liquid servo-actuated pattern carry out work), has Chinese patent application now and number is 92102712 and 89203779 patent and also belong to this mode of operation.The regulator of working under above-mentioned various patterns all has a common ground to be exactly: all used electric liquid conversion and intermediate liquid to press great institutions in the regulator.The effect of this mechanism is to convert the electrical signal to the output of hydraulic pressure signal (or linear displacement signal) as regulator, removes to promote (control) main control valve.And intermediate liquid presses the complex structure of great institutions own, to the quality requirement height of oil, thereby for keeping the cleaning of oil, makes it free from foreign meter during operation, just need spend more a lot of cost of expense and maintenance load.Intermediate liquid presses great institutions and also exists the oil rub resistance ability in addition, and blocked portion and drift phenomenon easily take place, and causes the rate of fault height, reliability is low, control accuracy is poor.Although above-mentioned patent has been done some improvement to regulator, as adopt microcomputer technology or step-by-step movement servo etc., in structure, also be to use electric liquid conversion and intermediate liquid to press great institutions.
At above not enough the purpose of this utility model be design a kind of in regulator not electricity consumption liquid conversion and intermediate liquid press the step regulator that rotational speed of water turbine is controlled that is used for of great institutions.
The utility model by the following technical solutions for achieving the above object: whole regulator is made up of supervisory control unit, driver element, stepper motor, handwheel, mechanical transducer and displacement transducer.Wherein the stepper motor rotating shaft is connected with the main shaft direct mechanical of mechanical transducer and drives its work, and handwheel is directly installed on the other end of stepper motor rotating shaft, and displacement transducer is installed on the mechanical transducer.The function of mechanical transducer is that the angular displacement with stepper motor is transformed into straight-line displacement.
Whole controller structure and workflow: supervisory control unit calculates the electrical pulse output signal by setting value (or value of feedback), behind the driver element power amplifier, be added on the stepper motor, mechanical transducer is converted to straight-line displacement with the angular displacement of stepper motor, and, remove to promote (control) main control valve with the output of the linear displacement signal of mechanical transducer output as regulator.Be installed in displacement transducer on the mechanical transducer simultaneously and position signal is transformed into electrical signal feeds back to supervisory control unit, form closed loop control.Can directly rotate the output quantity that handwheel is regulated mechanical transducer as power failure.Electric liquid conversion and intermediate liquid that this regulator has adopted stepper motor+mechanical transducer to substitute in the regulator in the past press great institutions, only with--machine servo-actuated pattern carries out work.
Because electric liquid conversion of cancellation and intermediate liquid press great institutions in structure of the present utility model, adopted stepper motor+mechanical transducer, thereby make whole regulator have simple in structure, reliability is high and good stability, no blocked portion and drift phenomenon, reduced system operation cost and maintenance workload, also had higher regulation quality (little, fluctuation few, adjusting time of number of times is short) simultaneously as overshoot; The method of operation is switched does not have impact, be not afraid of power down when moving.The utility model is applicable to the adjusting and the control of various rotational speed of water turbine.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model embodiment's a block diagram;
Fig. 2 is stepper motor 3+ mechanical transducer 5 structural representations shown in the figure one;
Figure 1 shows that a kind of embodiment of the present utility model, it constitutes wherein supervisory control unit 1 by supervisory control unit 1, driver element 2, stepper motor 3, handwheel 4, mechanical transducer 5 and displacement transducer 6 and is made up of frequency measurement, measurement of power unit and PLC programmable unit.Driver 2, stepper motor 3 and displacement transducer 6 equal selection standard type products: wherein driver 2 is to adopt digital pulse formula stepper motor driver, and stepper motor 3 is with a flange plate 15.Mechanical transducer 5 is made up of housing 7, main shaft 8, flange plate 9, output cover 10.Housing 7 is the hollow cylindrical body, its upper end and flange plate 9 welding, and lower end edge is axially driven a guiding groove 14.Main shaft 8 upper ends are adorned a bearing 11 and are used for fixing with housing 7, and block with snap ring 12, in case main shaft 8 moves up and down, are processed with screw 16 on the spindle rod of lower end, two upper and lower limit mechanical protection device 18,19 are housed at screw about in the of 16.Output cover 10 also be the hollow cylindrical body, and the upper end is enclosed within on the main shaft 8, is connected with screw 16 on the main shaft 8 by the tooth 17 on it, and a guide rod 13 is equipped with at the middle part, stretches out from guiding groove 14, adorns a displacement transducer 6 on the guide rod 13 that stretches out.
The running of whole regulator is: supervisory control unit 1 calculates the electrical pulse output signal by setting value X (or value of feedback), behind driver element 2 power amplifiers, be added on the stepper motor 3, under the rotating shaft 20 of stepper motor 3 drives, main shaft 8 on the mechanical transducer 5 rotates, the screw 16 that rotates drives silk tooth 17, add guide rod 13 and be subjected to the restriction of guiding groove 14, make only moving linearly of output cover 10, with this output quantity Y as regulator, go to promote (control) main control valve 21, main control valve 21 removes to control the rotating speed of water turbine 23 by coupled main servomotor 22.Guide rod 13 on the output cover 10 also can drive displacement transducer 6 motions simultaneously, and displacement transducer 6 is transformed into electrical signal with the position signal that changes and feeds back to supervisory control unit 1, forms closed loop control.When the silk tooth 17 on the output cover 10 moves to (or down) extreme position, go up 18 (or 19) action of (or down) limit mechanical protection device, a tooth 17 and screw 16 are thrown off automatically, play a protective role.
When not having electricity, can directly rotate the rotating shaft 20 that handwheel 4 drives stepper motors 3 and rotate, the output cover 10 on the mechanical transducer 5 is moved as straight line, reach the output quantity of regulating regulator.
Claims (3)
1, a kind of water turbine step regulator, it comprises supervisory control unit 1, driver element 2, stepper motor 3, handwheel 4 and displacement transducer 6, mechanical transducer 5 one ends and the coaxial mechanical connection of the rotating shaft of stepper motor 3 that it is characterized in that this regulator output, the other end are regulator output.
2, water turbine step regulator according to claim 1 is characterized in that mechanical transducer 5 overlaps 10 by housing 7, main shaft 8, flange plate 9, output and forms.Housing 7 is the hollow cylindrical body, its upper end and flange plate 9 welding, and lower end edge is axially driven a guiding groove 14; The upper end of main shaft 8 is adorned a bearing 11 and is used for fixing with housing 7, blocks with snap ring 12, and the lower end is processed with screw 16, and online female 16 upper and lower end is equipped with mechanical protection device 18,19; Output cover 10 also be the hollow cylindrical body, and the upper end is enclosed within on the main shaft 8, is connected with screw 16 on the main shaft 8 by the tooth 17 on it, and a guide rod 13 is equipped with at the middle part, stretches out from guiding groove 14.
3, water turbine step regulator according to claim 1 is characterized in that rotating shaft 20 the other end mechanical connections of handwheel 4 and stepper motor 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94218940U CN2235513Y (en) | 1994-08-19 | 1994-08-19 | Advanced type adjusting device for kaplan turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94218940U CN2235513Y (en) | 1994-08-19 | 1994-08-19 | Advanced type adjusting device for kaplan turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235513Y true CN2235513Y (en) | 1996-09-18 |
Family
ID=33833960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94218940U Expired - Fee Related CN2235513Y (en) | 1994-08-19 | 1994-08-19 | Advanced type adjusting device for kaplan turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235513Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390403C (en) * | 2002-11-22 | 2008-05-28 | 谢森生 | Hydrolic mechanism free electric motor servo system water turbine speed regulator |
-
1994
- 1994-08-19 CN CN94218940U patent/CN2235513Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100390403C (en) * | 2002-11-22 | 2008-05-28 | 谢森生 | Hydrolic mechanism free electric motor servo system water turbine speed regulator |
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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 |