CN204099119U - Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls - Google Patents
Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls Download PDFInfo
- Publication number
- CN204099119U CN204099119U CN201420524613.0U CN201420524613U CN204099119U CN 204099119 U CN204099119 U CN 204099119U CN 201420524613 U CN201420524613 U CN 201420524613U CN 204099119 U CN204099119 U CN 204099119U
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- China
- Prior art keywords
- gear
- direct current
- mounting plate
- current generator
- limit switch
- Prior art date
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- Expired - Lifetime
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000009434 installation Methods 0.000 abstract description 2
- 238000005265 energy consumption Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006855 networking Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- 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
Landscapes
- Control Of Eletrric Generators (AREA)
- Control Of Water Turbines (AREA)
Abstract
Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls, comprise direct current generator, gear, chain, mounting plate, position limit switch, gear disk, pwm control circuit; Described mounting plate is fixedly mounted on the manual hand wheels of described water turbine; Described gear disk is fixed on the manual hand wheels screw rod of described water turbine; Described gear is fixedly mounted on described mounting plate; Described chain is around in the periphery of described gear disk and described gear; Described direct current generator and described position limit switch are arranged on mounting plate respectively; Described position limit switch has a small gear and is engaged mutually with described chain.Pwm control circuit connects direct current generator, for controlling the clockwise and anticlockwise of direct current generator.The utility model volume is little, energy consumption is little, easy for installation, control accuracy is high, good stability, high safety.
Description
[technical field]
The utility model relates to the speed regulating device of hydraulic turbine of medium waterpower generator station, is specifically related to a kind of automatically controlled arrangements for speed regulation of hydroturbine DC controlled based on PWM.
[background technique]
The water turbine governing of medium waterpower generator station controls to be generally manual hand wheels control, AC Motor Control, microcomputer governor control in the market.The shortcoming of these control modes is:
1, in medium waterpower generator station, many units are had all not install speed regulator, manually can only carry out by-pass cock water stator by handwheel, when generator contactor accident causes tripping operation, especially trip removal of load in emergency circumstances at 2 to 3 units, staff closes guide vanes of water turbine (nozzle needle) often in a rushly simultaneously.As the carelessness that works, stator can not be closed in time, and unit likely produces driving, causes serious consequence.
2, AC Motor Control is on original manual tune handwheel, adds that exchanges a control motor.When system dead electricity, load rejection, the power supply controlling motor disappears or maintains very short time, can not stator pass to full off state, and AC Motor Control degree of regulation is poor, wayward.
3, due to all networking operations under bulk power grid covers of most of small hydropower station, do not undertake the frequency modulation task of electrical network, therefore, microcomputer governor reduces greatly in the effect in power station, and microcomputer governor complex structure, price is higher, and operation maintenance is more difficult, requires that power station operations staff and maintainer have higher technical merit.In actual motion, because the fault of speed regulator own, defect or operation management are improper, there will be fluctuation of service situation; Microcomputer governor controls to adopt oil pressure cntrol mode to water turbine, also there will be the easy leakage of oil of element, oil pump starts the situations such as frequent, Oil pump electrical machinery easily damages.
In sum, need to invent a kind of structure simply, easy to maintenance, the water power plant speed regulating device of hydraulic turbine that Safety performance is high, for medium waterpower generator station.
[summary of the invention]
Technical problem to be solved in the utility model be in order to overcome existing by manpower, Safety performance is low, high cost is not enough, provide a kind of automatically controlled arrangements for speed regulation of hydroturbine DC controlled based on PWM, use PWM to control to improve water turbine rotation precision, use DC MOTOR CONTROL to improve Safety performance.
The technological scheme that the utility model adopts for its technical problem of solution is:
Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls, comprise direct current generator, gear, chain, mounting plate, position limit switch, gear disk, pwm control circuit;
Described mounting plate is fixedly mounted on the manual hand wheels of described water turbine; Described gear disk is fixed on the manual hand wheels screw rod of described water turbine; Described gear is fixedly mounted on described mounting plate;
Described chain is around in the periphery of described gear disk and described gear;
Described direct current generator and described position limit switch are arranged on mounting plate respectively; Described position limit switch has a small gear and is engaged mutually with described chain.
Described pwm control circuit connects described direct current generator, for controlling the clockwise and anticlockwise of direct current generator.
Feature of the present utility model is: 1, flexibility is high: the utility model device can carry out customization processing according to water power plant water turbine, only need carry out machine rebuilding to its stator or nozzle needle according to tested shape; 2, good reliability: the utility model device adopts PWM to control, and degree of regulation is higher, and water turbine swings little, reliable and stable; 3, high safety: the utility model device adopts direct current 24V Energy control, in system dead electricity, during generator tripping removal of load, can emergency cut-off water stator.
[accompanying drawing explanation]
The utility model will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the utility model device plan view.
Fig. 2 is the utility model device plan view.
Fig. 3 is the utility model device side view.
Fig. 4 is pwm control circuit structural drawing of the present utility model.
[embodiment]
Refer to shown in Fig. 1 to Fig. 3, based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls, comprise direct current generator 1, gear 2, chain 3, mounting plate 4, position limit switch 5, gear disk 6, pwm control circuit (see Fig. 4);
Described mounting plate 4 is fixedly mounted on the manual hand wheels 100 of described water turbine; Described gear disk 6 is fixed on the manual hand wheels screw rod 200 of described water turbine; Described gear 2 is fixedly mounted on described mounting plate 4; Gear 2 and gear disk 6 are fixed in same level.
Described chain 3 is around in the periphery of described gear disk 6 and described gear 2; Utilize chain 3 driven gear dish 6, and then allow manual hand wheels screw rod 200 rotate, promote the Kai Heguan of nozzle needle or guide vane.
Described direct current generator 1 and described position limit switch 5 are arranged on mounting plate 4 respectively; Described position limit switch 5 has a small gear 51 and is engaged mutually with described chain 3.By the mounting point of adjustment stroke switch 5, the small gear 51 on position limit switch 5 is engaged with chain 3, the spacing travel point determining guide vane of adjustment position limit switch 5.
As shown in Figure 4, described pwm control circuit is containing charhing unit, storage battery, PLC module, clockwise and anticlockwise motor driver module.Charhing unit can the supply voltage of stable output be charge in batteries, and storage battery provides power supply for PLC module and clockwise and anticlockwise motor driver module.PLC module sends pulse command and controls clockwise and anticlockwise motor driver module and then control direct current generator.
Direct current generator 1 adopts wide input voltage range (9V ~ 28V) to realize the rotation of motor, and has stronger overload capacity.Gear 2 and gear disk 6 adopt steel material, according to the size customization processing of on-the-spot water turbine handwheel 100.Mounting plate 4 is fixed on water turbine handwheel 100, and screw hole is elongated hole, convenient fixed installation.Position limit switch 5 adopts gear counter formula mechanism, and control accuracy is high, easy to adjust.Pwm control circuit accurately can control the rotating speed of water turbine according to the feedback of water turbine rotational frequency, main control loop adopts PLC to control, and controls clockwise and anticlockwise motor module, and then control the clockwise and anticlockwise of direct current generator by sending pwm pulse signal.
The utility model specific works process is: when water power plant needs start generating, staff sends start-up command by PLC module, PLC module is according to the frequency computation part PWM dutycycle of water turbine, outputing order to clockwise and anticlockwise motor driver module drives direct current generator 1 to rotate, gear 2 on direct current generator 1 drives chain 3 transmission, and chain 3 driven gear dish 6 rotates, and gear 6 coils and rotates and then drive screw rod 200 to rotate, then drive nozzle needle (stator) to rotate, complete smooth start process.Control this direct current generator by PWM, can accurately generator be left to rated speed, and swing little.When having accident to occur in water power plant (as system dead electricity), generator tripping, the utility model device utilizes the power supply of storage battery to drive direct current function machine-operated to home generating electricity safely.
Claims (1)
1., based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls, it is characterized in that: comprise direct current generator, gear, chain, mounting plate, position limit switch, gear disk, pwm control circuit;
Described mounting plate is fixedly mounted on the manual hand wheels of described water turbine; Described gear disk is fixed on the manual hand wheels screw rod of described water turbine; Described gear is fixedly mounted on described mounting plate;
Described chain is around in the periphery of described gear disk and described gear;
Described direct current generator and described position limit switch are arranged on mounting plate respectively; Described position limit switch has a small gear and is engaged mutually with described chain;
Described pwm control circuit connects described direct current generator, for controlling the clockwise and anticlockwise of direct current generator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524613.0U CN204099119U (en) | 2014-09-12 | 2014-09-12 | Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420524613.0U CN204099119U (en) | 2014-09-12 | 2014-09-12 | Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204099119U true CN204099119U (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420524613.0U Expired - Lifetime CN204099119U (en) | 2014-09-12 | 2014-09-12 | Based on the automatically controlled arrangements for speed regulation of hydroturbine DC that PWM controls |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204099119U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265557A (en) * | 2014-09-12 | 2015-01-07 | 福建亿华源能源管理有限公司 | PWM (Pulse Width Modulation) control based water turbine direct current electric control speed regulating device |
-
2014
- 2014-09-12 CN CN201420524613.0U patent/CN204099119U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104265557A (en) * | 2014-09-12 | 2015-01-07 | 福建亿华源能源管理有限公司 | PWM (Pulse Width Modulation) control based water turbine direct current electric control speed regulating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |