GB2415674A

GB2415674A - Marine jet drive outlet with pressurised air injection

Info

Publication number: GB2415674A
Application number: GB0507324A
Authority: GB
Inventors: Graham Mervyn Booth; Patricia Ann Booth
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-12
Filing date: 2005-04-12
Publication date: 2006-01-04
Anticipated expiration: 2025-04-12
Also published as: GB0507324D0; GB2415674B

Abstract

An outlet channel A of a marine water jet drive has pressurised air injected into the stream of water exiting said outlet channel. The air is injected from a number of air injection ports D3, mounted on and equally spaced around the circumference of said outlet channel. The air injection ports may be connected to a source of pressurised or compressed air by pressure air lines C1. Cowl plates 1A may be fitted to the jet drive outlets to protect them from damage.

Description

24 1 5674

DESCRIPTION

1)THE ALTERNATE ELECTRO POWERED HYDROVAIN MARINE DRIVE UNITS REAR CHANNELS AS IN FIG 1.LETTER A.WILL FIT ANY SIMILAR SYSTEM ON ANY OTHER MARINE CRAFT,OR SHIPS,AND IS FOR ONE OR MORE SYSTEMS WHICH RUN INDEPENDENTLY FROM EACH OTHER,BELOW DESCRIPTION IS FOR EACH INDIVIDUAL SYSTEM,MORE SYSTEMS FITTED REQUIRE EVERYTHING AS DESCRIBED BELOW EXTRA TO THAT MENTIONED,WHAT IS DESCRIBED IS PER OUTLET CHANNEL PER SYSTEM.

2)THE RAISED AREA OF THE OUTLET CHANNEL CASTING AS IN FIG 1 LETTER B. 3)THE PRESSURE AIR LINES FITTED AS IN FIG 1 LETTERS C1-2-34-5-6 OR MORE AS REQUIRED.

4)THE MULTI CONNECTION POINT AS IN FIG 1 LETTER D3 FOR THE HIGH PRESSURE AIRLINES TO FIT TO,FROM ONE OR MORE AS REQUIRED 5)THE CENTRAL PRESSURISED AIRTANK FOR THE CONNECTION AIRLINE TO BE FITTED TO AND FROM,FIG 1 LETTER D1.

6)CONNECTION FOR THE AIRLINE TO BE CONNECTED TO AS IN FIG 1 LETTER D2, WHICH CONNECTS TO THE MULTI CONNECTION POINT AS IN FIG 1 LETTER D4.

IN THE CENTRAL POSITION.

7)THE HIGH PRESSURE ONE WAY AIR VALVES CONNECTIONS WHICH FIT TO THE AIRLINES FROM THE RAISED AREA OF THE CASTING ON THE OUTLET CHANNELS, AS iN FiG 1 LETTER E,WHICH CONNECT TO THE AIRLINES,C1-2-34-5-6 OR MORE AS REQUIRED.

8)AIRLINES WILL NEED TO BE SECURED TO THE OUTLET CHANNELS SO THAT THEY WILL NOT BE ABLE TO HANG LOOSE,AS WILL ANY AIRLINE PIPELINES USED FOR THIS EXTRA ADDITION TO THE OUTLET CHANNELS.

9)THE HOLES DRILLED THROUGH FROM THE RAISED CASTING AREA,WILL BE DRILLED AT APPROXIMATELY 30% ANGLE THROUGH TO THE INNER FACE AND

THREADED FROM THE OUTSIDE LONG ENOUGH TO COVER THE THREADED

FITTINGS WHICH ARE ATTACHED TO THE RAISED AREA OF THAT CASTING, MAKING SURE THEY ARE SECURED FIRMLY,FROM ONE OR MORE AS REQUIRED, ALSO ANY OTHER CONNECTIONS THAT ARE ATTACHED TO THE SYSTEM.

10)FROM THE REAR END OF THE OUTLET CHANNEL IS FITTED A PRESSURE GAUGE, LETTER E1, FIG 1,THIS IS ALSO FITTED VIA A DRILLED HOLE WHICH IS

THREADED DEEP ENOUGH FOR THE GAUGE CONNECTION PART TO BE

SCREWED SECURELY TO THE OUTLET CHANNEL.THIS IS TO SHOW THE AMOUNT OF PRESSURE BUILD UP IN THE OUTLET CHANNEL.

11)ATTACHED TO THE MULTI CONNECTION POINT IS AN ELECTRICAL OR MANUAL SHUT OFF VALVE,WHICH EVER IS CHOSEN,THIS IS CONNECTED TO THE

CENTRAL

MULTI CONNECTION POINT,THE HOSLINE IS CONNECTED TO THE VALVE AT THIS POINT LETTER D3 CONNECTS TO THE CENTER OF LETTER F,WHICH CONNECTS TO THE LETTER D4.THIS VALVE IS ALSO OPERATED FROM THE BRIDGE,AS WELL AS THE ENGINE ROOM,AS AND WHEN IT IS REQUIRED.

12)ALONG THE SIDE OF THE COMPRESSED AIR TANK IS A BANK OF ONE TO SIX

OR MORE DRILLED AND THREADED CONNECTION POINTS FOR HOSELINES TO

BE CONNECTED,THESE SUPPLY THE AIRTANK WITH COMPRESSED AIR AT ALL TIMES, LETTER D1 BEING THE TANK,F1 BEING THE CONNECTING POINT,ON THE SIDE OF THE TANK,THESE HOSES CONNECT TO COMPRESSORS BEING SITED AWAY FROM THE TANK AS iN LETTER F2 FITTED TO F1 AS IN FIG 1.AGAIN ONE TO SIX OR MORE COMPRESSORS BEING INSTALLED FOR THIS PURPOSE.

13)0N THE OUTSIDE OF THE STERN SECTION WHERE THE OUTLET CHANNELS ARE EXPOSED TO THE SEA,AS IN FIGURE 2 NUMBER 2A AND 2 B. 14)THERE IS A COWEL PLATE FITTED AS TO PROTECT THE OUTLET CHANNELS FROM OUTSIDE SOUCES WHICH COULD CAUSE DAMAGE,AS IN FIGURE 2 NUMBER 1A AND 1 B. 15)ALTHOUGH THESE ARE OPTIONAL,AND THAT A SYSTEM WOULD WORK FINE WITHOUT THEM,IT IS MY OPINION THAT THESE SHOULD BE FITTED,THEY ARE SECURELY FITTED TO THE HULL ITSELF AN IN FIGURE 2 NUMBER 1A AND 1B TO NUMBER 3A.

1 6)THESE COWELLINGS ALSO ACT AS A STABLEIZER BEING THAT THEY ARE FITTED TO THE HULL SIDES AT A STRAIGHT ALLIGNMENT TO THE HULL SIDES.

ACTING AS A RUDDER WOULD DO IF FITTED TO A CONVENTIONAL VESSEL, BOTH SIDE BEING PARALLEL TO ONE ANOTHER.

17)THESE COWELLINGS EXTEND TO A POINT IN FRONT OF THE OUTLET CHANNELS,AND ALSO EXTEND BACK REARWARD TOWARDS THE POINT THAT THEY ARE IN ALIGNMENT WITH THE HULL.

18)THESE COWELLINGS ARE ALSO BOTH ABOVE AND BELOW THE OUTLET CHANNELS IN HEIGHT,AGAIN FITTED AT THE TOP OF EACH TO SECURE THEM TO THE VESSELS HULL. AS IN FIGURE 2 NUMBER 4A AND 4B.

1 9)THEY ARE LONGER THAN THE END OF THE OUTLET CHANNEL SO AS TO ENSURE

THAT ALL THE WATER PRESSURE IS DIRECTED BACKWARD AWAY FROM THE

VESSEL AS TO MAXIMISE REARWARD THRUST AS IN FIGURE 2 NUMBER 5A AND 5B.

20)THESE COWELLINGS ARE AN ADDITION TO AND NOT COMPULSERY,AS ANY

SYSTEM TYPE FITTED WITH A SIMILAR SYSTEM WOULD FUNCTION JUST AS

WELL WITHOUT THESE FITTED TO THEM.

Claims

ELECTRO POWERED HYDROVAIN MARINE DRIVE UNIT.

TURBO AIR INJECTION FOR REAR OUTLET TUBES.

__ _ _ _ _ _ __ __ __ _ _ _ __ ____

ALTERNATE ITEMS WHICH WILL FIT ANY MARINE CRAFT OR SHIP

_ _ _ _ __ __ _ _ _ _ ___ _ ___ ___ ___ ___ _____

___ _ _

THE ELECTRO POWERED HYDROVAIN MARINE DRIVE UNIT REAR CHANNELS WILL

FIT ANY CRAFT OR SHIP WITH A SIMILAR HYDROVAIN SYSTEM FITTED TO IT,THESE ARE AN ALTERNATIVE TO THAT PART OF THE SYSTEM.

THE ONE OR TWO OR MORE FLOW OUTLET CHANNELS FITTED TO THE REAR OF

THE HIGH PRESSURE PUMPS,HAVE AN ADDITIONAL FEATURE ADDED TO THEM,

THIS IS A RAISED CIRCULAR MOULDED FEATURE WHICH IS SITED APROXIMATELY

1/3RD TOWARDS THE OUTLET CHANNELS STERN SECTION OR ANY OTHER PART SUITED, WHICH ALLOWS ONE TO SIX OR MORE AIR LINE CONNECTIONS TO BE FITTED INTO IT, INSIDE OF THE MOULDING IS HOLES DRILLED THROUGH FROM THE

OUTSIDE OF THE MOULDING RIGHT THROUGH INTO THE INNER FACE AT

APPROXIMATELY 30% ALLOWING AIR TO BE PRESSURISED THROUGH INTO THE OUTLET CHANNELS,THIS IS ACHIEVED BY THE USE OF ONE WAY AIR VALVES

SCREWED SECURELY TO THE DRILLED AND THREADED HOLES IN THE RAISED

MOULDED AREA OF THE OUTLET CHANNELS THIS WILL ALLOW MORE PRESSURE

TO BE ADDED TO THE WATER WHICH IS FLOWING THROUGH THE OUTLET

CHANNELS,INCREASING THE ABILITY FOR REARWARD THRUST,FROM THE CONNECTIONS ON THAT CASTING,HIGH PRESSURE HOSELINES ARE CONNECTED,

THESE RUN ALL THE WAY TO THE AIR PRESSURE MUTI CENTRAL CONNECTION

CASTING UNITS,THIS HAS ALSO GOT ONE TO SIX OR MORE AIR HOLES DRILLED RIGHT THROUGH TO THE INNER FACE AND THREADED FROM THE OUTSIDE,THERE

ARE ALSO SCREW FITTINGS FITTED TO EACH OF THEM AS ON THE RAISED AREA

ON THE OUTLET CHANNEL,THIS ALLOWS FOR THE HIGH PRESSURE PIPES TO BE SECURED IETHER END,ALLOWING THE HIGH PRESSURE AIR TO FLOW FROM THE SOUCE TO THE OUTLET CHANNELS,IN THE CENTER OF THE MULTI CENTRAL CONNECTIONS,IS A CENTRAL CONNECTION POINT,THIS IS ALSO DRILLED THOUGH TO THE INNER FACE, AND IS THREADED,ALLOWING THE MAINS PRESSURE LINE TO BE CONNECTED TO THE SOUCE,THE RESERVOIRS ONE OR MORE AS REQUIRED WHERE THE HIGH PRESSURE AIR IS CONTAINED,THIS IS FED FROM THE COMPRESSORS,ONE OR MORE,WHICH WOULD BE FITTED TO THE MAINS RESERVOIR TANK.IN ADDITION TO THIS,IS A CONTROL VALVE WHICH CAN BE ADJUSTED FROM THE CLOSED POSITION TO FULLY OPEN,THIS DETERMINES

THE AMOUNT OF HIGH PRESSURE THAT WOULD BE NEEDED TO CREATE THE

EXTRA POWER NEEDED FOR THE PROPULSION INCREASE,THIS VALVE COULD BE ELECTRICAL OR MANUAL TYPE,OR ANY OTHER VALVE WHICH WOULD ALTERNATE THE AIR PRESSURE NEEDED,BEING CONTROLLED IN TWO AREAS, IETHER FROM THE BRIDGE OR FROM THE ENGINE ROOM ITSELF,THIS SYSTEM

WOULD ALSO HAVE ADDED PRESSURE GAUGES FITTED ONE OR MORE AS

REQUIRED,AS AND WHERE NECESSARY FOR SAFETY REASONS,BOTH ON THE BRIDGE AND THE ENGINE ROOM.THERE IS ALSO A PRESSURE GAUGE FITTED AT THE REAR END OF THE OUTLET CHANNEL,THIS IS FITTED TO A DRILLED AND THREADED HOLE,THIS HOLE IS DRILLED THOUGH TO THE INNER SURFACE, THIS ALSO WOULD BE SEEN ON THE BRIDGE AS WELL,AS THE PRESSURE

AT THE REAR END WOULD BE GREATER THAN FURTHER DOWN THE OUTLET

CHANNEL,NEARER TO THE OUTLET FROM THE PUMP WATER SOUCE,

FORWARD ON THE OUTSIDE AT THE STERN SECTION AT THE VERY OUTLET

OF THE CHANNELS,ONE OR MORE OF THESE,IS SUGGESTED A STABALEIZING COWELLING FITTED TO IETHER SIDE OF THE HULL,THIS NOT ONLY ENSURE THAT

ANY PRESSURISED WATER BEING EMMITED FROM THE OUTLETS WAS

DIRECTED IN A REARWARD MANNEReTHESE ALTERNATIVE COWELLINGS,

WOULD ALSO PROTECT THE OUTLET CHANNELS FROM ANY OUTSIDE

INTERFERANCE,BEING THEY ARE MADE LONGER THAN THE END OF THE l OUTLET CHANNELS,ALSO HIGHER ABOVE AND LOWER BELOW THOSE CHANNELL OUTLETS,THEY WILL ALSO HAVE A STABLEIZiNG EFFECT ON

THE VESSEL BEING THAT THEY ARE INLINE WITH THE HULL ITSELF IETHER

SIDE OF THAT HULL,BEiNG PARALLEL TO ONE ANOTHER,THESE ADDED

COWELLINGS ARE NOT NECESSARY FOR THE SYSTEM TO WORK

EFFICIENTLY,AS IT WILL WORK WELL ENOUGH WITH OR WITHOUT THESE,

BUT IT IS PREFERED THAT THESE OPTIONS ARE TAKEN UP WHEN

CONSIDERING USEING A WATER PROPULSION DRIVE UNIT,AND THAT THEY ARE FIRMLY FIXED ONTO THE HULL AT VARIOUS POINTS,AS THEY ARE

WELL BELOW THE SEA SURFACE AND OPEN TO THE PRESSURES OF THE

SEA ITSELF.

Amendments to the claims have been filed as follows Marine Jet Drive with Pressurised Air Injection ======================================= Claim 1 ======== A marine vessel comprising a water jet drive with at least one outlet channel,wherein pressurized air is injected into the stream of water exiting said outlet channel(s),said air being injected from a number of air injection ports formed within the outer wall of the outlet channel(s),said ports being equally spaced around the circumference of said outlet channel(s) at a point along the length Qf said outlet channel(s),with each port comprising a one way valve mounted within a bore passing through the wall of the outlet channel(s) at an angle of 30 degrees to the longitudinal axis of the outlet channel(s),such that air is injected in the same direction as the water stream,each of said valves being connected via an air line to a single electrical shut off valve linked to a compressed air source.

Marine Jet Drive with Pressurised Air Injection ======================================= Claim 2 A marine vessel as Claimed in Claim 1,wherein the or each outlet channel is protected by a cowl plate,wherein the or each cowl plate acts as a stabiliser for the vessel.