DE2205809C2 - Steam power plant for ship propulsion - Google Patents

Description

2. Installation according to claim 1, characterized in that one with the shaft of the ship's propeller (8) or with an associated. Shaft of the transmission interacting disengageable Locking device and a control device are provided, which depends on the measured braking torque the opening of the high pressure valve (3) and the low pressure valve (6) the forward steam turbine (4,7) on the one hand opposite the reverse travel valve (21) of the Reverse steam turbine (20) on the other hand adjusted in opposite directions.

55

The invention relates to a steam power plant for ship propulsion, which is used for forward travel Existing high-pressure stage and low-pressure stage with intermediate superheater Forward steam turbine and a reverse steam turbine for reverse travel, the Forward and reverse steam turbine alternately via valves that can be operated in opposite directions can be switched on.

In a system of this type known from German utility model I 779 022, the Rückwäris steam turbine is the high-pressure and the low-pressure stage of the forward steam turbine connected in parallel, so that they with Live steam is operated. This means that the reverse steam turbine is structurally similar Requires effort like the forward steam turbine. The reverse steam turbine is therefore expensive. Another disadvantage is that when reversing the reheater is not from Steam flows through it and must therefore be protected against burning. This happens e.g. B. by placing the reheater in an area of relatively low flue gas temperature, resulting in The consequence is that the reheater surface must be dimensioned quite large.

The invention is based on the object of creating a steam power plant for ship propulsion in which the outlay for the reverse steam turbine is small and sufficient steam cooling of the intermediate auxiliary auxiliary is ensured even when reversing.

According to the invention, this object is achieved in a steam power plant of the type specified at the beginning solved by the combination of the following features:

a) The reverse steam turbine consists of a low-pressure stage, which is operated via a reverse valve connected to the reheater;

b) parallel z <: r high pressure stage of the forward steam turbine a bypass line is provided which connects the main steam line with the reheater, in which A bypass throttle valve with a water injection valve is provided,

c) when driving forwards are the reversing devices and the bypass throttle valve and the water injection valve are closed while on High pressure valve and a low pressure valve before the high pressure stage or the low pressure stage the preheating steam turbine is open;

d) when switching to reverse, the reverse travel valve, the bypass throttle valve as well as the water injection valve in the opening sense and the high pressure valve and the low pressure valve in the closing sense actuated.

Because the reverse steam turbine as Low-pressure stage is formed, there is a cost-saving design for this. Another advantage of the According to the invention, because of the connectability of the reverse steam turbine with the wiper superheater outlet always, d. H. also when switching from forward travel to reverse travel and vice versa, good cooling of the / wipe superheater is achieved. By attaching the bypass throttle valve with water injection valve it is possible to use an additional in this device Generate amount of steam, so that a high performance is achieved even when driving backwards. A Finally, another advantage is that the last-mentioned device can also be in operation can when the ship is in port, so that then in large quantities low-tension e-fight for Heating purposes can be generated.

The arrangement of a the high pressure sufa a ^^ f ^^ l ^^ t

Steam power plant bypassing line with emem turbine ο d, c den scr, ι ^ ^

Bypass throttle valve and a 'water-' J! Dampftrhinc 20 relaxed steam will

spnuvea.il. is known per se from the German Kc an ^ ** ™ ^ _{n un} d «, -! angl

Aiisleücschnft I 42641) 1. 5 ""., "., Η" "nlcr / eiiwr 1 back. AnI Lheso

Hn Aasfühiungsbcispicl the li..imlu, "i M in the also" ^. "Äirtwärisfalm" nc "κ- Kül> -

ted.rrih.ng based on the drawing. he »^ '^ ,,, SLSzcrs 5 securing! .. I e, ne,

the

SSSSi Sd, ™ er _r br _at ", A" _las e besieh, ^, ^ i "f ff ^

pemäB Fig. 1 essentially from a Dampier- ^ ₇ Tu 'd'I leading impulse lines as well as some 1 with superheater! a high pressure tank. ₁₅ 27 6 un-1 o'clock P " _lbl . _Miul the a reheater 5, a low-gctragt- ^ ¹ * _{"ndcr vcrbU,} ckt as" to be _slu FE7 the stages 4 and 7, the forward «^ _{'^;... LMsf; ilm the ohc} ngcnann steam turbine form, as well as a reverse Damp - \ onws "" ^ll j, _cfl , _{cben Das} , "act, urbine 20. which is intended for backward travel .st. U-Stü Jt ^» _οίηοπ Γ Manftvriersiand 50 Die Vorwärts-Dampfu.rb. "are the \ cUL. c ^ t least te.lwe.se steam turbine 20 ..her a non dargestclhcs out. I> JJ _c" nc 4.7 and de reverse _{a wcr} J _CI1 for example, in transmission with emem ship propeller 8 connected De too. " ^ ™ ^ _{fa | ut wcnn as} "the high-pressure-low-pressure stage 7 and the reverse steam turbine slow sam, ^ ™ ^^^. ^ _{The i; mpchlin} gs are connected to a condenser 10, the venlil J ₍ It · t _{NN asSL} . _rcl nspr.tzven, l 27 geüber a condensate pump II, a ^ '^ ";. ^ ®J ™ ^ _C n to the Dampfscrbrauchern 30 / uhehalter 12 and 13 with the Spe.sepumpe on a ^ ι ^^ crd uk _{to fc} .. I nampfcrzeuser communicates utScm Be.riebs / us.and the Nicdcrdrucksentil6 Prior to entry of each of the two stages 4 and 7 dhcsc. he ^^ p _{t. S} chl "isscn and the reverse Dampflurbine 20, st cn high in I ^ oss "^ _{|.. Iuchdruckstll,} e4 übcr-Mcgcnd druckNcntil 3, a Nicdcrdruckvent.l 6 J = b -w Backward running valve 21 provides ³ ° ^ i JlicinJicAmriobslcistung provided the de mL HE ^{b /} *. - ^a " ^{tm 1} ^" ^ _{n dic} blocking of the valves 3.6, reffende stage b / w. Turbine closed and peeled off AuUtrdcm k ^^ ^^ _{Steamcr /} can be. Parallel / to high pressure valve 3 and and -11 open «^^ _{before (jcr Abfah dc} to high pressure stage 4 If a bypass line 25 gc ^ f ^tdhrC _{icscm fil | 1} steam can be installed at the same time, in the bypass throttle valve 26 35 ^S ^ ^nll ' ^ts · "", ", id 7 of the preheating steam tower and with water injection valve 27 is arranged is. so that de SUMtn4 _fuirbillL . ₂ 0 are given. Live steam escaping from superheater 2 is given ύ «■ J" ⁰ ^. ' _{dcr work} , _{L. n} turbines and the Le.-throttles and can be cooled. The air cooling es / um A ⁿ * ^ar ^ ' _{EnhWlcn dcr} Las, the steamer / eudes live steam injected feed water becomes lung M * kr / un _c ^ ^ _cinzuslellcn . _{that the} s is supplied via a line 28, between feed 4o gcrs. Dabc mc ^^ ^ _{torque and} pump 13 and steam generator 1 from the Spc.selei- from the SuIc, _{(see Dan fturbine} 20 exercised "branches off at the outlet of Zwischenuberh.l- J ^ ^ ^, _{S1 (;.. aufhcbcn h} A means for, eri 5 in which over the Nicderdruckvcntil 6 or the ^Drchm" ^ ⁿ _F i _{nstcllcn dcr} valves 3, 6 and 21 is the Niederdruckstufc 7 and f ™ ¹ , ¹ ^ ™, ^ _On the reverse steam turbine 20, not shown, 45 FB are shown ^ ^ _g ^ _d ne gear-like branches a line 31 with VcnHl 32 at »the to je'lcjcs ^S _e "^^. _{jn cinc Zah luckc of} the steam consumers 30 leads how they are inserted on ships over- disk 4" O ^ _s ^ y _{inkc 41}

^lk i _c ; ^nd Vo _r waiting ride the Sch.ffes d * ^^^^ ^^^^ ^

Bypass throttle valve l 26 and the water s- ^ χ ^Γ ₄ ? _3ϋί J _ncm bolt 44 guided. Vicinity

seat valve 27 and the reverse valve 21 _{perforated by the pawl 4} l, s, on the

close and the high pressure valve 3 and the £ ™ _{r | i dcn} Se.ten the pawl one each

Low pressure valve 6 open. So Damp gcgtnum flows. r | _{which the} pawl always m the

from the superheater 2 to the high pressure stage 4, Fed « ■ * & -« ng ^^^ _{yor the} pawl 41

. there partially expanded and then .m Zw ": Hen- 55 ^ f ^ ^Uc _{Äl | namely} ^b _fcster bolt 46 provided on

Superheater overheated again, after which this steam is a _{4? is pivotably} mounted.

in the low pressure stage 7 further relaxed and the un ^ _{icht (} , _{r Ar} ^ between

finally in the capacitor 10 ™ the struck ^ parallel, attached to the locking pawl

will. The condensate then passes through the condensate two para. _{währcnd DCR other arm} of the satpumpe 11, the feed water tank 12 and de "™ ⁿ ^ _{'s the} ^fe ff _Abgri one ^^ nt'ometers

Feed pump 13 back to steam generator 1. WmK _{potentiometer} eter .st a servomotor 51

When driving backwards, the high pressure valve 3J ' ¹ « ¹ ^ is _{the one} rotary movement in an axial one

and the low-pressure valve closed, and "tos S ^ e _ine r rod 52 transforms the rod

Bypass throttle valve 26 "w'e the water. N ⁰ ^ ^g > _{m arm a} s three-armed lever 53 long spray valve 27 and the reverse valve 21 geof - 6 ₅ st an e ^ ^. ^ Other arms of the lever

net. The steam now flows from the iJberhn- saiio _{gungss, a} hang for de Ventile3 and "

zer w.rd 2 is reduced via the bypass line 25, where he .n its 53 ^"nd ^" f _flurbin e einerscts and the jerk pressure and its temperature, and

Wärtsfahrvcntil 21 connected on the other hand. In the The rod 54 of a servomotor 55 is located in the middle between the two last-mentioned actuating rods hinged under the l-influli one of the maneuvering station 50 incoming signal is available.

When starting the steam generator or shortly before departure of the ship, when the valves 3 and 6 of the forward steam turbine and the reverse drive valve 21 are open at the same time, the pawl 41 is pushed into a tooth gap in the disc 40 by means of the servo motor 42, as shown in FIG 2 is shown. If the steam quantities flowing into the turbines 4, 7 and 21 are so different that a greater torque is exerted on the ship's propeller in one direction, the pawl 41 is deflected around the bolt 44 somewhat to the right or to the left. This deflection results in a pivoting of the angle lever 47 and thus a change in the voltage U tapped at the potentiometer 49. Corresponding to this change in voltage, the three-armed lever 53 is pivoted about the pivot point of the rod 54 clockwise or counterclockwise via the servomotor 51 and the rod 52, so that the valves 3 and i of the forward steam turbine on the one hand and valve Zl of the reverse steam turbine on the other hand

ίο are operated in opposite directions to each other, As a result, the steam quantities flowing into the turbines 4, 7 and 2C are influenced in such a way that dif both torques are equal and the pawl 41 returns to its Mittcllagc. Nacl The start-up of the steam generator or when the ship departs is terminated with the help of the servo motor 42 switched off the locking device.

1 sheet of drawings

Claims (1)

Patent claims: 1. Steam power plant for ship propulsion, which consists of a high pressure stage and s Low pressure stage with intermediate superheater existing forward steam turbine and has a reverse steam turbine for reverse travel, wherein the Forward and reverse steam turbine via valves that can be operated in opposite directions can be switched on alternately, characterized by the combination of the following Features: a) the backward Dampturbine (20) is' ⁵ from a low-pressure stage, which is connected via a Backward traveling valve (21) to the reheater (5); b) parallel to the high pressure stage (4) of the forward steam turbine (4,7) a bypass line (25) is provided which connects the live steam line to the reheater (5), a bypass throttle valve (26) in the bypass line (25) is provided with a water injection valve ^as (27); c) when driving forward are the reverse travel valve (21) and the bypass throttle valve (26) and the water injection valve (27) closed, while a high pressure valve (J) and a Nicdordruckventil (6) before the high pressure stage (4) or the low pressure stage (7) the forward steam turbine is open; d) when switching to reverse, the reverse travel valve (21), the Bypass throttle valve (26) and the water injection valve (27) in the opening sense and the high pressure valve (3) and the Low pressure valve (6) in the closing sense actuated.