DE1947016C3 - Thrusters for watercraft - Google Patents

Description

The invention is a thruster in the preamble of the main claim specified type for watercraft.

Such thrusters are, for example, in the form of a channel directed towards the center plane of the ship arranged in the bow. A reversible propeller is built into the transverse channel (German Patent specification 883 098). It is also known to design the canal arranged in the foredeck in a T-shape. The inlet opening is in the VorderstevLMi des Arranged on the ship and leads to a horizontal inlet channel leading in the longitudinal direction of the ship, in which the pump impeller is arranged. Behind the pump impeller the inlet channel opens into an outflow channel traversing the ship's hull, its outlet openings individually through doors are lockable (German Auslcgeschrift 506 771). Such a control device is also known to be arranged in a bead attached to the hull and the two outflow channels to be connected to the inlet canal with a gentle curve. There is a twistable one in each discharge channel Closure Klnppe arranged, which is in the fully open position in the direction of flow, in Closed position tightly seals the relevant outflow channel (German utility model 1 983 425).

The German Auslegeschrift I 054 141 shows a bow control device with an axial pump with horizontal ducting and one itself

ίο branching channel with a common coaxial Shut-off device for the branching channel that can be rotated relative to the pump shaft. Is disadvantageous in the process that the two outlet channels are not perfect are lockable. If the shut-off device

device is in the central position, d. H. if no steering forces are desired, the water jet occurs evenly on both sides of the ship. This causes a loss of efficiency because of the continuously exiting cross-jet the flow on the side walls of the Schill is disturbed.

From the Soviet patent specification 104 814 it is already known to have a bow steering device an axial pump the shut-off device for a branching channel, the axes of which are in a Stay level to form such that it forms a rotatable T-piece. This becomes a Complete shut-off is achieved, but the disadvantage is that the axial pump is at its maximum performance Has zero delivery rate. This means that the drive motor due to the to be applied higher Power for the pump at zero delivery, d. H. when closing the outlet ducts or when reversing from starboard to hackboard, must be dimensioned more heavily, which requires more effort and in particular has an effect on its size.

In all of these known designs of such thrusters, the duct system is arranged horizontally. This horizontal arrangement of the channel system has the disadvantage that it is a relatively large one Part of the bow space is claimed and therefore has to be arranged quite high above the keel to obtain a frame width sufficient to accommodate the outflow channels. Also requires that Accommodation of the adjustment drive for the shut-off device or the shut-off devices in addition full space in the hull.

The invention is based on the object of the aforementioned devices for controlling a Train the watercraft space-saving, with / to direct and block the outlet jet simple Devices can be used.

This object is achieved by the characterizing features of claim 1.

From the German utility model 1 740 70 ^l > it is known to provide a transverse channel as a control device, the two hips of which run slightly downward and in which a pump is arranged. There are no shut-off devices. The inclination of the channel halves only serves the U ₁ Ue! -Posted arrangement of the drive.

By combining the features according to the invention, the device can be space-saving form. In particular, through the formation of the flow channel and the common Shut-off device simple space-saving drives to open or close the outlet openings must be provided because the displacement or

i 947

The pivot angle of the common shut-off device is considerably smaller than in the case of the arrangement the discharge channels at the height of the pump shaft. In particular allows such a design of the flow channel that for urn steering from one to the other outlet opening the shut-off device, which is arranged coaxially to the pump shaft, only by a considerable amount needs to be rotated under 180 '' angular path. By the invention Design of the outlet opening, a complete shut-off is achieved, with the arrangement a radial pump impeller with axial inlet, a so-called radial pump, whose maximum output at zero delivery is lower than its design point, a drive motor is the least lower performance is required. When the motor control device is shut down, there are no losses in efficiency, and the drive motor has the further advantage that it reduces the on-board network loaded, less space.

Because the VersehwenkwinkeJ the shut-off device is considerably smaller than 18 "J. can be in ". A further embodiment of the invention without further ado .. in a piston drive as a hydraulic servo motor for the Reversal can be used.

Such a control device can not only; Space-saving in the bow of a ship with straight vorsteven be accommodated, but also - in a further development of the invention - in at least

VerUkal level through the ^

wave 12 '"J ^ °" ^gw 7 pimpenwelle 12 measured

a N ^ f '^ fj ^ U ^ Sutzens of the spiral largest L.chtwe, * d «A« «nt« P ^ ^

house 13 ^^ SSkanilen 16, Π befindli-J ^"belden _B ^ _{ulstes u, so that} ß the exit part 24 of the öugwu.si, Mittelste'-

opening before, de training of the
home be ^ J "
de: n Endstd ^u «ß ^en ^
home

A middle

inderflHh 25 des ^ ' _{eckt is at this} he

_{hen the at} .

_{2QO SQ that the} Spiralge _unt ^ _{ren part of} ßugwul-Shko

Purpose is motors 14 on

»Bound ^ Heb ^

Be. the 'lung after mungskanal Likewise

* 5 α * cn ™

IB ^ ^ _{ren unt portion of} g 'Schwenkservo-

^y l _d n _kan. kservohülsenartig At this _Schwen

mu demJ »f _}

l & .k ι B ^ _{n Einrich} .

^ _{Nd 5 bes} f _{TZT the irn} currents * un _nlaufrad 18 '

feeo ^ ^^. ^

^^ p _urnpe nlaufrades 18 'in. , _its outer rim 8.

The _{contour of the PurnFenlau} f _{ra is designed as a} hollow cone 13 'and has an end surface with a curved shape

10

K · Ly. gen se Hu. S des

, your development of the invention in at least JJf ^ ^ end face and m

, henso advantageously m a on the hull 30 Buüise nut ° » ^en ^ _Dec kplatte 7 set. This built-in bead. Such a bead can be.sp.els- Bottom 9 stretching uec P b _{to dic}

■ .eise a bulbous bow, which is arranged in front of the stem, is hollow tapered to BJ «^ t _{and mi (}

,,, in: but it can also be used as a sc.t- ^{P. be formed around} P ^e " ^WL " ^c -i protruding bead. In the latter one, ^ cn case it is also possible to take action on each SeUe the hull such bead and • _U it equip each with its own pump.

The control device is described in more detail below with reference to the drawing. It shows

Fig. 1 a control device built into a bead in cross section according to plane I-l of F, g. with spiral housing as shut-off device,

Fig. 2 the control device according to Mg. 1 in Longitudinal section according to plane II-II of FIG. 1.

^{1 and} 3 a cross section according to plane ΙΙΙ-.Π the

M g Ten ^ nrfcLng according to F i g. 5 in Cross-section according to level IV-IV with a conical outer Hollow body formed shut-off device, ^ Fig. 5 is a longitudinal section according to plane V-V of the m Fig. 4 control device shown.

The construction shown in Fig.l and 2 ifcn a control device built into a bulge 11 has a S.römungskanal 10 and m ehelfd 18 t x.alrad.alcr through-

t _{and mi (}

Jei ₂ umschlielicnden where s and a lever 22 'trained _Dcr pivot angle of the hollow-^ _{Dnew in dic other} end _120' so that in the lower part ^tlwa _{'on' rdnetcr} hydraulic J _{1 seincr the} lever 22 'Toggle ₂ 3 'pivoting the hollow e ^ ^ _enditd \ _mt into the

concerned. Instead of de, in FIG. 5 shown ^ ⁰ ^ ₁₈ - you _{can also use} the device

by drr in Fig. 1 shown

^, _c ^ Zf £ cL _P TJ ^ a ' cylindrical socket for adjusting the water flow

its hollow cone 13 'is at

The Sc ^ " ^kwinKCI _{2QO dhs} * _vie , _wic the Win-

uu p _intriu . One can

'£ ⁿ Winkel 3er ^ _A S? C ^ orrichtung at this S ^ wenkwinkcl der. Constrain P. Dic-

A sbjdung d «^ r η fc _{ctwa; i winkd}

direction shows a S.römungskanal 10 and m ehe- A sbjdung ^ fc

sen, a pump impeller 18 with ax.al-rad.alcr diameter 55 er Ucmen ^ Win _dcr ^fc

f bi lhem therefore the diversion of which ^ "» P »

sen, a pump impeller 18 with ax.al

flow on, in which so already, πι P ™ ff '^ rad done the deflection of welchl Wasscrstrahlcs from the axial hintntthrichtung in the radial direction of emergence itself. This pump impeller 18 is disposed m a swiveling about its drive shaft 12, S ₁ .- ralgehäuse 60 MantcJ. 13 This Sn.ralgchause 13 ^ "takes the delivery flow of the pump impeller 18 and leads it to the outlet opening 15, which η

d slhe

takes the flow rate of the Pp "^; _{now in the} coat of

and leads it to the outlet opening 15, which η ^ "n one now _e ^

each of the two end positions of the Sp.ralgchiHises 13 or · \ Johizyma, _{ate off now}

^ Win _dcr ^fc _{Longitudinal axis of} the pump

^ "» P »- _Normalcbcn e to this outc-12 nc _{hU ß Die FanrM} r _y hlcn

ΐ Edge of the outlet opening 15 'on üen hollow cylinder, and the

^ "Μη, the greatest" value assumes.

; _{now in the} mantle of the hollow cone ^^ _{out] aßöffung}

15 'approximated

* ■

m to exceed a small amount, namely to avicl, as is required for the sealing surface. For this purpose, the point between the points closest to each other on the edges of these two outlet openings must be existing clearance - on the mantle

measured circumference - equal to the largest in the circumferential direction measured width of one of these outlet openings plus that measured in the circumferential direction • The inlet openings of the two outlet lines protruded 16. 17 'plus the sealing cap.

1 sheet of drawings

Claims (3)

Patent claims: t, thruster for a watercraft with an exit jet emitted by a pump impeller is generated, which is fixedly installed in a flow channel, the one substantially having inlet section extending in the longitudinal direction of the watercraft and the branched into two outlet lines, which have a common, rotatable coaxially to the pump shaft Shut-off device for directing and blocking the outlet jet is assigned, thereby characterized in that the pump impeller (18, 18 ') as a radial pump wheel with an axial inlet is executed and that the outlet lines (16, 17 or 16 ', 17') in the projection on a The normal plane to the axis of the pump shaft (12, 12 ') is between 60 and 150 Include angles, preferably an angle of 120, which is symmetrical to a vertical plane through the longitudinal axis of the pump shaft (12, 12 '), the in a normal plane to Largest outlet oil tining measured on the pump shaft axis (15, IS ') of the rotatable \ bsperrvorrich-Uing (13, 13 ') less than or at most equal to the width of the between the two outlet lines (16, 17 or 16 ', 17') located in the rotatable Gehä.seteiks (24, 24 ') is. 2. Device for controlling a watercraft according to claim 1, dadu? .h marked, that the shut-off device '13, 13 ') by means of a Kolbentricbes (14. 22, 23 or 14', 22 ', 23 ') is adjustable by the above angle. 3. Device according to claim 1 or 2, characterized in that the flow channel (10. 10 ') with the pump impeller (18, 18'), the outlet lines (16, 17 or 16 ', 17') and the Shut-off device (13, 13 ') in a manner known per se in a bulbous bow (11, 1Γ) of the watercraft are arranged.