GB2480238A

GB2480238A - Control device for passive vertical axis turbine

Info

Publication number: GB2480238A
Application number: GB1007736A
Authority: GB
Inventors: Paul Hales
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-05-10
Filing date: 2010-05-10
Publication date: 2011-11-16
Also published as: GB201007736D0

Abstract

A control device for a passive `swinging flap' vertical axis turbine allows the rotor to be stopped and started remotely, and allows a stalled blade to be released. The control device comprises an end stop 3 for a power foil 4 which can be engaged by extending a pneumatic actuator 10, and disengaged when the actuator is retracted. When the stops are disengaged, all foils are feathered, so there is no net torque on the turbine. The end stop 3 is spring loaded 6, and the reverse surface is sloping, so that a stalled blade will automatically be freed (figure 3). The pressure in the pneumatic system may be controlled according to the depth of the device under water.

Description

I

BACKGROUND

THE FIELD OF THE PRESENT INVENTION COMPRISES POWER

GENERATION, AND MORE SPECIFICALLY, POWER GENERATION BY

RENEWABLE RESOURCES THAT HAVE NOT YET BEEN FULLY

EXPLOITED.

THE WORLD S REQUIREMENT FOR ENERGY IS WELL UNDERSTOOD

AND THE SEARCH FOR ALTERNATIVE AND RENEWABLE FORMS OF

ENERGY HAS BECOME URGENT AND WIDE SPREAD.

ONE OF THE LARGEST AREAS OF KNOWN RENEWABLE POWER

RESOURCE IS THE LARGE MOVEMENTS OF WATER.

THERE ARE MANY LOCATIONS THROUGHOUT THE WORLD WHERE

LARGE MASSES OF WATER FLOW IN A CONSTANT AND RELIABLE

MANNER, ALTHOUGH THE FLOWS ARE AT LOW VELOCITY.

SUCH LOCATIONS, WHICH PROVIDE GREAT OPPORTUNITIES FOR EXPLOITATION OF POTENTIAL ENERGY, INCLUDE TIDAL FLOWS, RIVER FLOWS, AND DEEP OCEAN CURRENTS.

FOR EXAMPLE, THE KUROSHIO CURRENT FLOWING PAST THE COAST OF JAPAN AT SHIKOKU MOVES AT A RATE UP TO 5.5 KNOTS, WITHOUT THE VARIATIONS COMMON TO WIND AND SOLAR POWER.

LIKEWISE, THE GULF CURRENTS FLOW ALONG THE ATLANTIC COAST OF THE UNITED STATES AT A SIMILAR VELOCITY, THESE ARE VAST

AREAS OF WATER MOVING AT STRONG FLOW RATES AND THERE ARE

EVEN GREATER AREAS SUCH AS THE COASTAL AREAS AROUND THE

BRITISH ISLES THAT HAVE STEADY TIDAL FLOW RATES ABOVE 3 KNOTS.

FOUR BASIC FORMS OF TIDAL STREAM TURBINE DESIGNS ARE BEING

RESEARCHED TO CAPTURE AND EXPLOITE THIS RESOURCE, THEY ARE HORIZONTAL PROPELLER TYPES, A MARINIZED FORM OF THE WELL KNOWN WIND TURBINE, VERTICAL AXIS DARRIUS TYPE

TURBINES WHICH INCORPERATE FIXED OR CONTROLLED MOVEMENT

OF SHAPED FOILS TO INDUCE LIFT ETC. THE THIRD TYPE ARE THE OSCILLATORS, WHICH MIMIC THE ACTION OF A FISHES TAIL AND THE FINAL MAJOR TYPE ARE THE VERTICAL AXIS SIDE DRIVE TURBINES,

WHICH PRESENT A LARGE AREA OF MOVING BLADE TO THE FORCE

OF WATER FLOW ON ONE SIDE OF THE SUPPORTING MAIN SHAFT

AND THEN BY VARIOUS MEANS PRESENT A MUCH SMALLER AREA OF

THE SAME BLADE WHILE RETURNING AGAINST THE FLUID FLOW TO

THE BEGINNING OF THE DRIVE POSITION AGAIN.

FORMS OF THIS SIDE DRIVE TURBINE ARE DESCRIBED IN GB 2435 906A AND GB 2452 484 A.

ONE ASPECT THAT IS MISSING FROM THIS FINAL FORM OF VERY

HIGH TORQUE LOADING TURBINE IS ANY METHOD OF OPERATIONAL

CONTROL OVER THE ROTATION WHICH WOULD ALLOW SAFE AND

INSTANT STOPPING OF THE TURBINE IN AN EMERGENCIES

SUCH AS DUE TO A MECHANICAL FAILURE, THE CLOSE PROXIMITY OF LARGE FORMS OF WILDLIFE, WHALES ETC, ALSO DURING THE

DEPLOYMENT AND RECOVER OF THE DEVICE WHEN DIVERS OR

ROV'S ARE IN CLOSE PROXIMITY.

THIS PATENT APLICATION DESCRIBES A SIDE DRIVE TURBINE

CONTROL DEVICE THAT CONTROLS ALL OPERATIONS THAT THE

TURBINE WILL UNDERTAKE WHEN DEPLOYED.

PROBLEMS TO OVERCOME

WATER FLOWS, BY THEIR VERY NATURE BEING EIGHT HUNDRED TIMES THE DENSITY OF AIR, CONTAINS VERY HIGH AMOUNTS OF

KINETIC ENERGY WHICH IS CONVERTED TO ROTATIONAL TORQUE BY

THE SIDE DRIVE TURBINE DESIGN. THE SIDE DRIVE TURBINE

CONTROL MECHANISM HAS TO TRANSFER THIS HIGH TORQUE

LOADING FROM THE POWER BLADES TO THE MAIN TURBINE DISCS

WITHOUT ENERGY LOSS OR FATIGUE /STAINING TO THE STRUCTURE WHICH COULD CAUSE FAILURE.

THE NEXT FUNCTION OF THE SIDE DRIVE TURBINE CONTROL DEVICE

IS TO PREVENT THE TURBINE POWER BLADES ATTEMPTING TO DRIVE

THE SIDE DRIVE TURBINE IN A REVERSE DIRECTION WHICH WOULD

INDUCE THE TURBINE TO STALL.

THE FINAL MAIN FUNCTION OF THE SIDE DRIVE TURBINE CONTROL

DEVICE IS TO STOP THE ROTATION OF THE TURBINE COMPLETELY

WHEN REQUIRED.

THE SIDE DRIVE TURBINE CONTROL DEVICE HAS TO OPERATE AT

ANY DEPTHS OF WATER WHERE THE PRESSURE INCREASES WITH

THE INCREASE OF WATER DEPTH.

THE SIDE DRIVE TURBINE CONTROL DEVICE HAS TO OPERATE IN A

VERY HOSTILE AND CORROSIVE ENVIRONMENT FOR VERY LONG

PERIODS WITHOUT MAINTENANCE AND ALSO BE ABLE TO BE

OPERATED REMOTELY.

ADVANTAGES

BEING ABLE TO DEPLOY AND RECOVER ANY FORM OF SIDE DRiVE

TIDAL STREAM TURBINE IS A COMPLICATED AND VERY COSTLY

ENTERPRISE IN THE MARINE ENVIRONMENT AS THE WINDOW OF

OPPORTUNITY TO DEPLOY IS NORMALLY LIMITED TO THE VERY SHORT

PERIODS AT SLACK WATER, AT THE HIGH OR LOW POINTS IN THE TIDAL FLOW AND ESPECIALLY IF THE TURBiNE DRIVE BLADES ARE FIXED IN POSITION AND CANNOT BE FEATHERED.

WITH THIS TURBINE CONTROL DEVICE, IT WILL BE POSSiBLE TO

DEPLOY THE TIDAL GENERATORS WITH THE TURBINE STOPPED AND

LOCKED WHICH WOULD BE ESPECIALLY USEFUL IN RUN OF RIVER

LOCATIONS WHERE SLACK WATER PERIODS RARELY OCCUR.

WHILE TIDAL STREAM TURBINE DESIGN MUST INCORP[RATE A METHOD OF OPERATING IN REVERSING WATER FLOWS, THEY ARE

ALSO IDEALLY SUITABLE FOR RUN OF RIVER APPLICATIONS AS WELL

WHICH ARE NORMALLY SINGLE DIRECTIONAL FLOWS.

BY INCORPERATING A METHOD OF ANTI-STALL WITHIN THE SIDE

DRIVE TURBINE CONTROL DEVICE, THIS WILL ALSO ALLOW A MUCH SMALLER START UP SYSTEM TO BE INSTALLED. AS THE NEED IS THEN

ONLY TO ROTATE THE SIDE DRIVE TURBINE THE NINETY DEGREES SO

THAT AT LEAST ONE OF THE POWER BLADES IS FEELING THE FORCE OF

THE WATER FLOW WHICH STARTS THE TURBINE OPERATION AND NOT

TO DRIVE A STALLED POWER BLADE TO AN UNSTALLED POSITION

WHICH IS UNDER WATER PRESSURE LOAD BY BEING ON THE WRONG

SIDE OF THE DRIVING DEVICE, WHICH TAKES A VERY LARGE TORQUE

FORCE AND THEREFORE A LARGE TORQUE START UP SYSTEM TO

OVERCOME.

THE USE OF PNEUMATIC FORCE TO OPERATE THE MAIN OPERATION OF

THE SIDE DRIVE TURBINE CONTROL DEVICE WILL ALLOW THE SAME

DEVICE TO OPERATE AT VARIABLE WORKING DEPTHS iN THE OCEAN SIMPLY BY INCREASING THE WORKING AIR PRESSURE. SHOULD THE

TIDAL TURBINE DEVICES BE USED AT LOCATIONS REMOTE FROM A

MANUAL CONTROL OPERATION THEN USE OF AN ACOUSTIC SIGNAL TO

PNEUMATIC VALVES, AIR STORAGE VESSELS AND PRESSURE BLEED VALVES, ALL COMMON AND KNOW IN PRIOR ART, CAN BE USED TO REDUCE OR INCREASE THE CONTROL DEVICE'S OPERATING PRESSURE.

THEREBY ALTERING THE TIDAL TURBINE'S ACTIONS.

THE USED OF PNEUMATIC SYSTEM WILL ALSO PREVENT CHANCES OF

ENVIRONMENTAL CONTAMINATION FROM HYDRAULIC FLUIDS, THE

ONLY OTHER ALTERNATIVE PRESSURE CONTROL FORCE WHICH

WOULD GIVE THE SAME WIDE RANGING CHOICES OF DEPLOYMENT

DEPTHS TO THE SAME DEVICE.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG 1 A PERSPECTIVE VIEW OF A GENERAL FORM OF SIDE DRIVE

WATER TURBINE SHOWING LOCATIONS FOR THE PREFERED

EMBODIMENT OF THE INVENTION 18.

FIG 2 SIDE VIEW OF THE PREFERED EMBODIMENT SHOWING THE CONTROL DEVICE IN THE DRIVE POSITION.

FIG 3 SIDE VIEW OF THE PREFERED EMBODIMENT SHOWING THE CONTROL DEVICE RELEASING A STALLED TURBINE POWER BLADE.

FIG 4 SIDE VIEW OF THE PREFERED EMBODIMENT SHOWING THE CONTROL DEVICE IN THE WATER TURBINE STOPPED POSITION.

FIG 5 TOP VIEW SHOWING THE PREFERED EMBODIMENTS GENERAL LAYOUT.

FIG 6 A PERSPECTIVE VIEW SHOWING THE CONTROL DEVICE'S MAiN DRIVE CAM.

LIST OF EMBODIMENT PARTS FOR EASIER REFERENCE

1. MAIN CONTROL UNIT -OUTER CYLINDER 2. MAIN CONTROL UNIT -INNER CYLINDER 3. MAIN DRIVE CAM 4. TIDAL TURBINE POWER BLADE 5. TIDAL TURBiNE MAIN DISC 6. DRIVE CAM COMPRESSiON SPRING 7. DRIVE CAM LOAD TRANSFER BAR 8. DRIVE CAM RETENSION PLATE 9. INNER CYLiNDER LIMITER RING 10. PNEUMATIC AIR BAG (TOROIDAL SHAPED) 11. INNER CYLINDER RETRACTION SPRING 12. RETRACTION SPRING SECURING PLATE 13. PNEUMATIC AIR RIGID PIPE 14. PNEUMATIC AIR FLEXIBLE PIPE 15. DRIVE CAM LOAD TRANSFER BAR LUBRICATION PORT 16. MAIN CONTROL UNIT TO MAiN DISC LOCKING SCREWS 17. GENERAL TYPE OF SIDE DRIVE TIDAL STREAM TURBINE 18. LOCATIONS OF PREFERED EMBODIMENT ON THE SIDE DRIVE TIDAL STREAM TURBINE (SOME LOCATIONS ARE OBSCURED BY UPPER DISC BODY OR POWER BLADES, EACH TURBINE

POWER BLADE WILL HAVE CONTROL UNITS FITTED WHICH ACT

UPON IT AT BOTH TOP AND BOTTOM INNER EDGES OF THE

WATER TURBINE'S MAIN DISCS 5).

19. MAIN SiDE DRIVE TIDAL TURBINE OUTPUT SHAFT.

SIDE DRIVE TIDAL TURBINE STARTING SECTION.

21 AIR BAG SUPPORT PLATE.

22 CYLINDER SLIDE RINGS.

DESCRIPTION OF TILE PREFERRED EMBODIMENT

THE PRESENT INVENTION GENERALLY COMPRISES A MECHANICAL

CONTROL DEVICE TO REGULATE THE OPERATION OF VERTICAL AXIS

TYPE WATER DRIVEN TURBiNES WITH MOVEABLE POWER BLADES OR FOILS.

WITH REGARD TO FIG 1 AND FIG 2, THE CONTROL DEVICE 18 INCLUDES AN OUTER CYLINDER!, SECURE TO THE WATER TURBINE 17 AT BOTH THE UPPER OR LOWER MAiN DISCS 5 BY THE USE OF MECHANICAL SCREWS 16. WITHIN THIS OUTER CYLINDER!, IS AN INNER CYLINDER 2 WHICH IS RETAINED WITHIN THE OUTER CYLINDER 1 BY A RETAINING RING 9 WHICH IS SECURED TO THE OUTER CYLINDER 1 WITH MECHANICAL SCREWS 16.

THE INNER CYLINDER 2 AND OUTER CYLINDER ARE SEPERATED BY CYLiNDER SLIDE RINGS 22 OF SUITABLE MATERIAL THAT PREVENT

CORROSION OR BINDING BETWEEN THE CYLINDERS IN THE HOSTILE

ENVIRONMENT WHERE THE CONTROL DEVICE 18 COULD BE DEPLOYED.

THE INNER CYLINDER 2 IS HELD FIRM UP AGAINST THE RETAINING RING 9 BY THE EXPANSION OF A TOROII)AL SHAPED AIR BAG 10. THIS PNEUMATIC AIR BAG!0,IS KEPT UNDER THE REQUIRED PRESSURE THROUGH A PNEUMATIC AIR RIGID PIPE 13 WHICH IN TURN IS CONNECT TO A PNEUMATIC FLEXIBLE PIPE 14, THIS FLEXIBLE PIPE WORK CAN BE

LEAD TO ANY COMMON PNEUMATIC CONTROL FILLING AND BLEEDING

VALVES SYSTEM THAT BRINGS TOGETHER ALL AIR LINES FROM TI-IF

MULTIPLE NUMBER OF CONTROL DEVICES 18 THAT MAY BE FITFED TO THE WATER TURBINE 17. (PNEUMATIC FILLING AND BLEED FITTINGS

WHICH CAN BE LEAD TO REMOTE LOCATIONS FROM THE WATER

TURBINE USING THE FLEXIBLE PIPE WORK 14 ARE COMMON PARTS

AND WELL KNOWN IN THE FIELD OF PNEUMATICS).

WITHIN THE INNER CYLINDER 2 IS A MAiN DRIVE CAM 3 WHICH IS

KEPT IN A VERTICAL POSITION BY PRESSURE FROM A COMPRESSION

TYPE SPRING 6. THIS COMPRESSION SPRING 6IS KEPT IN LOCATION BY SHAPED RECESSES WITHiN THE MAiN DRIVE CAM 3 AND THE FLOOR OF THE lN1JER CYLINDER 2.

THE MAIN DRIVE CAM 3 IS SHAPED TO TRANSMiT THE VERY LARGE

THRUSTING LATERAL FORCE FROM THE WATER TURBINE POWER

BLADES 4 THROUGH TO THE WATER TURBINE DISC 5 BY LARGE AREA

CONTACT PROVIDED BY THE MAIN DRIVE CAMS LOAD TRANSFER BAR

7 WHICH SPREADS THIS LOAD WIDELY ACROSS THE INNER CYLINDER 2 AND OUTER CYLINDER 1 TO THE WATER TURBINE MAIN DISCS S AND THEN ONWARDS TO THE WATER TURBiNE OUTPUT SHAFT 19.

THIS DRIVE CAM 3 IS SECURED AND PERMITFED TO ROTATE BY A RETENSION PLATE 8.

WITHIN THE MAIN DRIVE CAM LOAD TRANSFER BAR 7 Is A CHANNEL SHAPED LUBRICATION PORT 15 WHICH CONTAINS AN AMOUNT OF

SUITABLE LUBRICATION MATERIAL TO LUBRICATE THE AREA

BETWEEN THE CONTACT AREA ON THE INNER CYLINDER 2 AND THE MAIN DRWE CAM LOAD TRANSFER BAR 7.

WITHiN THE OUTER CYLINDER 1 LOWER SECTION IS A AIR BAG SUPPORT PLATE 21 WHICH NOT ONLY SUPPORTS THE AIR BAG 10 CLEAR FROM THE OUTER CYLINDER 1 FLOOR BUT ALLOWS ROOM FOR A INNER CYLINDER RETENSION SPRING 11 WHICH IS SECURED TO THE BOTTOM OF THE INNER CYLINDER 2 AND THE BOTTOM OF THE OUTER CYLiNDER 1 BY RETENTION SPRING SECURING PLATES 12. TillS INNER CYLINDER RETENTION SPRING 11 PULLS THE INNER CYLINDER 2

DOWNWARDS TO ITS LIMITED MOVEMENT WHEN THE PNEUMATIC AIR

BAG 10 PRESSURE IS REDUCED.

WITH REGARD TO FIG 2, THE CONTROL DEVICE 18 IS IN THE NORMAL WATER TURBINE DRIVE MODE.

AIR PRESSURE HAS BEEN APPLIED TO THE PNEUMATIC AIR BAG 10 THROUGH THE PNEUMATIC AIR RIGID PIPE 13 AND PNEUMATIC FLEXIBLE PIPES 14S0 THAT THE iNNER CYLINDER 2 IS HARD UP AGAINST THE INNER CYLINDER RETAINING RING 23. THIS POSITION PUTS THE DRIVING FACE OF THE MAIN DRIVE CAM 3 WITHIN THE SWEEP AREA OF A WATER TURBINE POWER BLADE 4 CAUSING THE

TORQUE LOADING TO BE TRANSMITTED THROUGH THE MAIN CONTROL

DEVICE MAIN DRIVE CAN 310 THE WATER TURBINE DISC 5 AND ONWARDS TO THE WATER TURBiNE OUTPUT SHAFT 19.

WITH REGARD TO FIG 3, THE CONTROL DEVICE 18 IS IN THE NORMAL WATER TURBINE DRWE MODE.

AIR PRESSURE HAS BEEN APPLIED TO THE PNEUMATIC AIR BAG 10 THROUGH THE PNEUMATIC AIR RIGID PIPE 13 AND PNEUMATIC FLEXIBLE PIPES 14 SO THAT THE INNER CYLINDER 2 IS HARD UP AGAINST THE INNER CYLINI)ER RETAiNING RiNG 23.

THE WATER TURBINE POWER BLADE 4 HAS MOVED TO A STALL POSITION DURING TIDAL FLOW CHANGE ETC, AS THE WATER TURBINE

STARTS TO ROTATE POWERED BY THE OTHER WATER TURBINE POWER

BLADES 4, THIS STALLED WATER TURBINE POWER BLADE 4 W[LL PRESS AGAINST THE ANGLED FACE OF THE MAIN CONTROL CAM 3 WHICH WILL COMPRESS THE DRIVE CAM COMPRESSION SPRING 6 ENOUGH FOR THE WATER TURBINE POWER BLADE 4 TO PASS THE CONTROL DEVICE 18 AREA AND ENGAGE CORRECTLY ON THE NEXT FULL WATER TURBiNE ROTATION.

WITH REGARD TO FIG 4, THE CONTROL DEVICE 18 Is [N THE NORMAL WATER TURBINE STOPPED MODE.

AIR PRESSURE HAS BEEN REMOVED FROM THE PNEUMATIC AIR BAG 10

BY THE REMOTE MR PRESSURE AND CONTROL VALVES COMMON TO

ANY PNEUMATIC AIR SYSTEMS.

THE DEFLATION OF THE PNEUMATIC AIR BAG 10 COMBINED WITH THE RETRACTION FORCE OF THE INNER CYLINDER RETRACTION SPRING 11 ALLOWS THE WHOLE INNER CYLINDER 2 TO RETRACT WITHIN THE OUTER CYLINDER 1 WHICH BRINGS THE MAIN CONTROL CAM 3 BELOW THE SWEEP AREA OF THE WATER TURBINE POWER BLADES 4 WHICH THEN ALLOWS ALL THE WATER TURBINE POWER BLADES 4 TO DISENGAGE AND WITHOUT DRiVING ACTION THE WATER TURBINE WILL STOP.

BY RESTORING THE PNEUMATIC AIR PRESSURE THROUGH THE

COMMON PIPE WORK TO THE PNEUMATIC AIR BAG 10 TO IT'S WORKiNG PRESSURE AT THAT DEPTH, THIS WILL THEN INFLATE THE PNEUMATIC AIR BAG 10 AND FORCE THE INNER CYLINDER 2 UPWARDS UNTIL REACHING THE INNER CYLINDER LIMITING RING 9, ALLOWING THE MAiN DRIVE CAM 3 TO ENGAGE THE TIDAL TURBiNE POWER BLADES 4 WHEN THE ROTATION BEGINS AGAIN.

SHOULD THE SIDE DRWE TURBINE MAIN DISCS 5, DUE TO STREAMLINING OR CONSTRUCTION COSTS CONSIDERATIONS ETC, BE TOO SLIM TO ACCOMMODATE THE CONTROL DEVICE 18 WITHiN THE UPPER AND LOWER SKINS, THEN PROVIDED THE MAIN DRIVE CAM 3 PART OF THE CONTROL DEVICE 18 IS OREINTATED AND LOCATED IN

THE CORRECT POSITION TO DRWE AND CONTROL THE SIDE DRIVE

TURBINE'S POWER BLADES 4 AND IS SECURELY FIXED TO THE MAIN DISCS, ANY PROTRUDING THROUGH THE MAIN DISC 5 BY THE CONTROL DEVICE 18 CAN BE SIMPLY STREAMLINED TO PREVENT EXCESS DRAG AS THE WATER TURBINE ROTATES.

STATEMENT OF INVENTION

THE PRESENT INVENTION GENERALLY COMPRISES A MULT-

FUNCTIONAL WATER TURBINE CONTROL DEVICE THAT CAN MANAGE

THE OPERATION OF SEVERAL FORMS OF WATER TURBINE WITH

MOVEABLE POWER BLADES OR FOILS iN A SAFE AND CONTROLABLE WAY.

THE FORCES OF MOVING WATER, BE IT RUN OF RIVER, TIDAL OR EVEN OCEAN CURRENTS WILL ALL PROVIDE RENEWABLE ENERGY.

ANY WATER TURBINE DESIGNED WITH MOVING OR TILTING POWER

BLADES OR FOILS TO OPERATE IN THESE HARSH CONDITIONS WILL

NEED A FORM OF CONTROL TO ALLOW DEPLOYMENT AND RECOVERY

OF THE WATER TURBINE SAFELY iN THE STOPPED POSITION AS WELL

AS THE REMOTE CONTROL FUNCTION TO STOP AND RESTARTING THE

TURBINE SHOULD MAINTENANCE BE REQUIRED.

THE CONTROLLING PNEUMATIC AIR OF THIS SYSTEM ALLOWS THE

CONTROL DEVICE TO WORK AT VERIABLE DEPTHS OF WATER FLOWS

SIMPLY BY INCREASING OR DECREASING TI-fE AIR PRESSURE TO INFLATE OR DEFLATE THE PNEUMATIC AIR BAG.

SHOULD ANY LEAK HAPPEN TO THIS SECTION OF THE CONTROL

DEVICE THEN THE PNEUMATIC AIR BAG WOULD DEFLATE AND THE

WATER TURBINE WOULD STOP OPERATING, AN INDICATION TO A PROBLEM REQUiRING ATFENTION.

THE SIMPLICITY OF THE COMPLETE WATER TURBINE CONTROL DEVICE

IN ITS COMPACT AND MODULAR FORM MAKES IS EASY TO REMOVE

AND REFIT BY THE WORKiNG OF MECHANICAL SCREWS AND

DISCONNECTION OF THE PNEUMATIC AIR LINE AND THEN THE

REVERSE ACTION FOR REPLACEMENT, ALLOWING EASY REPAIRS TO BE

CARRIED OUT SAFELY WHILE THE WATER TURBINE IS STILL

DEPLOYED.

THE SIMPLICITY FOR THIS PNEUMATIC WATER TURBINE CONTROL

DEViCE WILL ALSO ALLOW SMALL MICRO4IYDRO TYPE WATER TURBiNES TO BE USED IN UNDEVELOPED COUNTRIES, AS PART OF A

FLAT PACK WATER TURBINE GENERATION OR IRRIGATION PUMPING

UNIT WHICH CAN BE DELIVERED AND ASSEMBLED, WERE THE

PNEUMATIC CONTROL UNITS ARE PRESSURISED WITH A HAND PUMP ETC.

Claims

CLAIMS1. A DEVICE TO TRANSMIT THE HIGH TORQUE LOADING FROMVERTICAL AXIS WATER TURBINES WITH MOVEABLE POWERBLADES OR FOILS THROUGH A LUBRICATED ANT) LOAD SPREADiNG CAM SECTION TO THE MAIN TURBINE BODY SECTION
2. A DEVICE WHICH ALLOWS A VERTICAL AXIS WATER TURBiNES WITh MOVEABLE POWER BLADES OR POWER FOILS iN THESTALLED POSITION TO AUTOMATICALLY RETURN THEMOVEABLE POWER BLADES OR FOILS TO THE CORRECT DRWE

POSITION.
3. A DEVICE WFIICH ALLOWS A VERTICAL AXIS WATER TURBINESWITH MOVEABLE POWER BLADES OR FOILS TO BE STOPPEDREMOTELY BY A REDUCTION OF PNEUMATIC AIR PRESSURE.
4. A DEVICE WHICH ALLOWS A VERTICAL AXIS WATER TURBiNESWITH MOVEABLE POWER BLADES OR FOILS TO BE STARTEDREMOTELY BY INCREASING THE PNEUMATIC AIR PRESSURE.