KR100950620B1 - Steam turbine ship - Google Patents

Abstract

It is an object of the present invention to provide a steam turbine ship with two propellers.

A first propulsion turbine 3 having a forward high pressure turbine 6, a forward medium pressure turbine 7, and a reverse turbine 5 arranged on one axis, a forward low pressure turbine 4, and a reverse turbine. The 2nd propulsion turbine 2 in which 5 is arrange | positioned on one axis is arrange | positioned along the line width direction, and the 1st propeller 12 is rotated by the said 1st propulsion turbine 3, and the said The 2nd propeller 12 was made to rotate by the 2 propulsion turbine 2.

Description

Steam Turbine Ship {STEAM TURBINE SHIP}

The present invention relates to a steam turbine ship having two propellers.

As a ship steam turbine which rotates the propeller of a ship, what provided the high pressure turbine and the low pressure turbine is known (for example, patent document 1).

[Patent Document 1] Japanese Unexamined Patent Publication No. 2006-17007

In the marine steam turbine disclosed in the patent document 1, the high pressure turbine and the low pressure turbine are arranged side by side in the line width direction (located at respective places along the line width direction), and the high pressure turbine and the low pressure turbine are provided. By the ship steam turbine, one propeller rotates through a reduction gear. Therefore, when attempting to make two-axis steam turbine ships, two high pressure turbines and two low pressure turbines are needed, and all of these high pressure turbines and low pressure turbines are installed in an engine room with limited installation space (especially the line width direction). It was difficult to do this, and it was difficult to biaxialize a steam turbine ship.

This invention is made | formed in view of the said situation, and an object of this invention is to provide the steam turbine ship provided with two propellers.

MEANS TO SOLVE THE PROBLEM This invention employ | adopted the following means in order to solve the said subject.

The steam turbine ship which concerns on this invention is the 1st propulsion turbine in which the forward high pressure turbine, the forward medium pressure turbine, and the reverse turbine are arrange | positioned on one axis, and the forward low pressure turbine and the reverse turbine are on one axis. The arranged second propulsion turbine is arranged along the line width direction, and the first propeller rotates by the first propulsion turbine, and the second propeller rotates by the second propulsion turbine.

According to the steam turbine ship which concerns on this invention, a propeller rotates by two (two sets) turbine arrange | positioned side by side in the line width direction. Thereby, the steam turbine ship provided with two propellers can be implement | achieved.

In general, in the steam turbine, the high pressure portion at the bottom load mainly works, and the proportion of the work amount of the low pressure portion increases as the load increases, and the first propulsion turbine and the second propulsion turbine are changed by the change of the engine output. Since an output deviation occurs between propulsion turbines, a structure for compensating for both output variations must be added to this type of turbine arrangement. In addition, by changing the rotational speed of the left and right propellers by using a structure for compensating the output deviation, it is also possible to have an auxiliary function of the steering gear for changing the traveling direction of the steam turbine ship.

In the steam turbine ship, it is more preferable that shaft generators are respectively connected to the first propulsion turbine and the second propulsion turbine, and these shaft generators are connected to exchange power with each other.

According to such a steam turbine ship, the output of the propulsion turbine on the overload side is recovered as the electric power from the shaft generator, and this power is supplied to the shaft generator on the short side and converted into power, thereby easily synchronizing the rotation speed of each propeller ( The same can be done.

In addition, by controlling the power recovery amount and power supply amount of the left and right shaft generators, it is also possible to change the rotational speed of the left and right propellers and to have an auxiliary function of the steering gear for changing the traveling direction of the steam turbine ship.

In the steam turbine ship, it is more preferable that a generator is connected to the first propulsion turbine, an electric motor is connected to the second propulsion turbine, and these generators and the electric motor are electrically connected.

According to such a steam turbine ship, the power of the 1st propulsion turbine which becomes excessively output under low load is collect | recovered as electric power from a generator, and it supplies to the electric motor connected to the 2nd turbine which becomes relatively low in output under low load. By converting the power, synchronization of the first propeller and the second propeller rotational speed can be easily performed.

By controlling the power recovery amount of the generator of the first propulsion turbine and the electric power supply amount to the electric motor of the second propulsion turbine, the rotational speed of the left and right propellers is changed to have an auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship. You can also expect.

In addition, by employing a relatively inexpensive generator and electric motor instead of an expensive shaft generator, the manufacturing cost can be further reduced.

In the said steam turbine ship, it is more preferable if a generator is respectively connected to the said 1st propulsion turbine and the said 2nd propulsion turbine.

According to such a steam turbine ship, the synchronization of the rotational speed of a 1st propeller and the rotational speed of a 2nd propeller is made possible (adjustable) by adjusting the load of each generator, and surplus electric power other than the electric power required for synchronizing is engine room. It can be consumed (used) as a drive power source for auxiliary machinery installed therein or an inboard power source such as inboard lighting, and the output of a separately-produced power generator (for example, a main generator or a secondary generator) can be reduced by that much. Further, by controlling the power recovery amount of the generator of the first propulsion turbine and the power recovery amount of the generator of the second propulsion turbine, the auxiliary function of the steering gear which changes the rotational direction of the left and right propellers and changes the traveling direction of the steam turbine ship You can also expect to have.

In the said steam turbine ship, it is more preferable if an auxiliary turbine is connected to the said 2nd propulsion turbine.

According to such a steam turbine ship, since an auxiliary turbine is connected to the said 2nd propulsion turbine, when an engine low output, when the load ratio of a 2nd propulsion turbine is low compared with a 1st propulsion turbine, an auxiliary turbine is operated. As a result, the drive output of the second propeller can be supplemented to synchronize the first propeller with the second propeller. In addition, it is also possible to control the output of the auxiliary turbine to relatively increase or decrease the rotational speed of the second propeller relative to the first propeller, thereby providing an auxiliary function of the steering gear that changes the traveling direction of the steam turbine ship.

In the steam turbine ship, it is more preferable that auxiliary turbines are respectively connected to the first propulsion turbine and the second propulsion turbine.

According to such a steam turbine ship, the rotation of a 1st propeller and a 2nd propeller is easily synchronized by adjusting the output of the said auxiliary turbine connected to the output difference of the said 1st propulsion turbine and the 2nd propulsion turbine, respectively. You can.

By controlling the auxiliary turbine output of the first propulsion turbine and the auxiliary turbine output of the second propulsion turbine, it is also possible to change the rotational speed of the left and right propellers so as to have an auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship. have.

The steam turbine ship which concerns on this invention is a line propagation direction of the 1st propulsion turbine which consists only of a forward high pressure turbine and a forward medium pressure turbine, and the 2nd propulsion turbine in which the forward low pressure turbine and the reverse turbine are arrange | positioned on one axis. The first propeller rotates by the first propulsion turbine, and the second propeller rotates by the second propulsion turbine.

According to the steam turbine ship which concerns on this invention, two propellers rotate by the two (two sets) turbine arrange | positioned side by side in the line width direction. As a result, a steam turbine ship having two propellers can be realized.

In addition, since the first propulsion turbine consists of only the high pressure turbine and the medium pressure turbine, the shaft length can be shortened, and the periodic design becomes easy.

In addition, even in this structure, since the characteristic of the steam turbine in which the high pressure part loads mainly works and the work ratio of the low pressure part increases as a load increases, the 1st propulsion turbine is changed by the change of engine output. It is necessary to add a structure for compensating for the output deviation occurring between the turbine and the second propulsion turbine.

In the steam turbine ship, it is more preferable that the first propulsion turbine and the second propulsion turbine are mechanically connected via a plurality of gears, and a generator is connected to one of the gears.

According to such a steam turbine ship, the synchronization of the rotation speed of a 1st propeller and the rotation speed of a 2nd propeller is always made possible by the several gear which mechanically connects a 1st propulsion turbine and a 2nd propulsion turbine (adjustable). As a result, the entire power generated by the generator can be consumed (used) as the in-vehicle power source of auxiliary machinery installed in the engine room or inboard lighting, and the power generator (for example, the main generator or the secondary generator) prepared separately. Etc.) can be made smaller.

In the said steam turbine ship, it is more preferable if a reverse turbine is connected to the said 1st propulsion turbine, and an auxiliary turbine is respectively connected to the said 2nd propulsion turbine.

According to such a steam turbine ship, it is not necessary to arrange a reverse turbine on the coaxial of a 1st propulsion turbine, and the axial length of a 1st propulsion turbine can be reduced, and the installation space in an engine room is further reduced. You can.

In addition, since the auxiliary turbine is connected to the second propulsion turbine, when the output ratio of the second propulsion turbine is low when the engine is low in power, the auxiliary turbine is operated to increase the drive output of the second propeller, thereby increasing the drive output of the second propeller. The second propeller may be motivated. It is also possible to control the output of the auxiliary turbine to relatively increase or decrease the rotational speed of the second propeller relative to the first propeller, so as to have an auxiliary function of the steering gear that changes the traveling direction of the steam turbine ship.

The steam turbine ship which concerns on this invention is the 1st propulsion turbine in which the forward high pressure turbine, the forward medium pressure turbine, the forward low pressure turbine, and the backward turbine are arrange | positioned on one axis, the forward high pressure turbine, the forward medium pressure turbine. And a second propulsion turbine having a forward low pressure turbine and a reverse turbine arranged on one axis along the line width direction, and the first propeller rotates by the first propulsion turbine, The turbine is configured to rotate the second propeller.

According to the steam turbine ship which concerns on this invention, two propellers rotate by the two (two sets) turbine arrange | positioned side by side in the line width direction. Thereby, the steam turbine ship provided with two propellers can be implement | achieved.

In addition, since the load characteristics of the first propulsion turbine and the second propulsion turbine can be made equal, the first propeller and the second propeller can be easily synchronized.
By controlling the output of the first propulsion turbine and the output of the second propulsion turbine, it is also possible to change the rotational speed of the left and right propellers so as to have an auxiliary function of the steering gear for changing the traveling direction of the steam turbine ship.

In the steam turbine ship, a shaft generator is connected to the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller, respectively, and these shaft generators are connected to exchange power with each other. desirable.

According to such a steam turbine ship, since each shaft generator is directly attached to an intermediate shaft, for example, without going through a gearbox etc., a gearbox etc. can be avoided and the installation space in an engine room can be reduced.

In addition, by eliminating the need for an accelerator, the number of parts can be reduced, thereby reducing maintenance costs required for maintenance inspection (disassembly and assembly), and shortening the working time required for maintenance inspection. It is possible to reduce the maintenance space required for maintenance inspection.

In the steam turbine ship, it is more preferable that the forward medium pressure turbine and the forward low pressure turbine are reheat turbines.

By making the engine a reheat cycle, the efficiency can be greatly improved, and the fuel cost of the vessel and the operating cost can be reduced.

According to the steam turbine ship which concerns on this invention, the effect which can be twinned is exhibited.

EMBODIMENT OF THE INVENTION Hereinafter, 1st Embodiment of the steam turbine ship which concerns on this invention is described, referring FIG.
BRIEF DESCRIPTION OF THE DRAWINGS The principal part schematic top view of the steam turbine ship which concerns on this embodiment.

As shown in FIG. 1, the steam turbine ship 1 which concerns on this embodiment consists of a port ship (2nd propulsion turbine) and the starboard machine (1st propulsion turbine) 3 as a main element. .

The port 2 has a forward low pressure turbine 4 and a reverse turbine 5, and the starboard 3 has a forward high pressure turbine 6, a forward medium pressure turbine 7, and a reverse direction. The turbine 5 is provided. Moreover, the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 comprise one cycle (main engine).

In this embodiment, the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 constitute a reheating turbine.

The forward low pressure turbine 4 and the reverse low pressure turbine 5 are connected via a turbine rotor (not shown), and the forward low pressure turbine 4 passes through the forward medium pressure turbine 7. Steam flows in, and the steam which passed through the reverse turbine 5 of the starboard 3 flows into the reverse turbine 5. Steam flowing into the forward turbine 4 and the backward turbine 5 flows through a nozzle (not shown), and the thermal energy retained by the steam is converted into kinetic energy to become steam of high speed flow. This high velocity steam acts on a turbine blade (not shown) to rotate the turbine rotor. Rotation of the turbine rotor is decelerated by the first stage reducer 8 and the second stage reducer 9, and the port propeller passes through a thrust shaft (not shown), an intermediate shaft (not shown), and a propeller shaft 11. (First propeller) 12 is to be transmitted. The thrust of the port propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

In addition, steam passing through the forward low pressure turbine 4 and the reverse turbine 5 flows into a main condenser (M / C) (not shown).

The turbine rotor is connected to the first gear 8a, which is an element of the first stage reducer 8, via a connecting shaft 13 (or a coupling or seam not shown), and the turbine rotor and the coupling shaft. 13 and the 1st small difference 8a are integrally rotated in the same direction. In addition, the 1st small gear 8a engages (engages) with the 1st gear 8b which is an element of the 1st stage reducer 8. As shown in FIG.

The first gear 8b is connected to the second gear 9a, which is an element of the second gear reducer 9, via the coupling shaft 14, and the first gear 8b, the coupling shaft 14 ) And the second small gear 9a are integrally rotated in the same direction. Moreover, the 2nd small gear 9a engages (engages) with the 2nd gear 9b which is an element of the 2nd stage reducer 9. As shown in FIG.

The second gear 9b is connected to the thrust shaft (not shown), and the second gear 9b, the thrust shaft (not shown), the intermediate shaft, the propeller shaft 11 and the propeller 12 are It rotates integrally in the same direction. In addition, the second gear 9b is also engaged with the second gear 9c.

The second gear 9c is connected to the first gear 16a, which is an element of the speed increaser 16, via the coupling shaft 15, and the second gear 9c, the coupling shaft 15 and The first gear 16a is integrally rotated in the same direction. In addition, the first gear 16a engages (engages) with the first gear 16b, which is an element of the speed increaser 16. As shown in FIG.

The first gear 16b is connected to the rotary shaft 17a of the shaft generator (SG) 17 via a cup ring or seam (not shown), and the first gear 16b and the rotary shaft 17a. Is rotated integrally in the same direction.

The shaft generator 17 rotates the rotary shaft 17a by receiving a function of a generator that is generated by the rotation of the rotary shaft 17a and receiving electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board). A device having a function as an electric motor (virtual motor), which in this embodiment, can be exchanged with other shaft generators 17 arranged on the starboard side as shown by the broken arrow in FIG. Connected.

The forward high pressure turbine 6, the forward medium pressure turbine 7, and the reverse turbine 5 are connected via a turbine rotor (not shown), and the forward high pressure turbine 6 or the reverse turbine is used. (5) The superheated steam heated above the saturation temperature by the superheater of the main boiler (not shown) flows in, and the forward medium pressure turbine 7 is above the saturation temperature by the reheater (not shown). The heated superheated steam is introduced. Steam flowing into the forward high pressure turbine 6, the forward medium pressure turbine 7, and the reverse turbine 5 is converted into kinetic energy by the thermal energy held by the steam while flowing in the nozzle (not shown). It is a high velocity flow of steam. This high velocity steam acts on a turbine blade (not shown) to rotate the turbine rotor. The rotation of the turbine rotor is decelerated by the first stage reducer 8 and the second stage reducer 9, and starboard is passed through the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. It is supposed to be transmitted to the side propeller (second propeller) 12. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

In addition, the steam passing through the forward high pressure turbine 6 is returned to the reheater to be heated.

The turbine rotor is connected to the first gear 8a, which is an element of the first stage reducer 8, via a connecting shaft 13 (or a cup ring or seam not shown), and the turbine rotor and the coupling shaft. 13 and the 1st small difference 8a are integrally rotated in the same direction. In addition, the 1st small gear 8a engages (engages) with the 1st gear 8b which is an element of the 1st stage reducer 8. As shown in FIG.

The first gear 8b is connected to the second gear 9a, which is an element of the second gear reducer 9, via the coupling shaft 14, and the first gear 8b, the coupling shaft 14 ) And the second small gear 9a are integrally rotated in the same direction. Moreover, the 2nd small gear 9a engages (engages) with the 2nd gear 9b which is an element of the 2nd stage reducer 9. As shown in FIG.

The second gear 9b is connected to a thrust shaft (not shown), the second gear 9b, a thrust shaft (not shown), an intermediate shaft (not shown), a propeller shaft 11 and The propeller 12 is integrally rotated in the same direction. In addition, the second gear 9b is also engaged with the second gear 9c.

The second gear 9c is connected to the first gear 16a, which is an element of the speed increaser 16, via the coupling shaft 15, and the second gear 9c, the coupling shaft 15 and The first gear 16a is integrally rotated in the same direction. In addition, the first gear 16a engages (engages) with the first gear 16b, which is an element of the speed increaser 16. As shown in FIG.

The first gear 16b is connected to the rotary shaft 17a of the shaft generator (SG) 17 via a coupling or seam not shown, and the first gear 16b and the rotary shaft 17a. Is rotated integrally in the same direction.

The shaft generator 17 rotates the rotary shaft 17a by receiving a function of a generator that is generated by the rotation of the rotary shaft 17a and receiving electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board). A device having a function as an electric motor (virtual motor), which in this embodiment, can be exchanged with other shaft generators 17 arranged on the port side as shown by the broken arrow in FIG. Connected.

According to the steam turbine ship 1 which concerns on this embodiment, the propeller 12 of one (port side) is made, for example by the forward low pressure turbine 4 (or the 8000 KW reverse turbine 5) of 20,000 KW of output. And the propeller 12 of another (star side) is driven by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) of 20,000 KW. Will rotate. That is, two propellers 12 are rotated by two (two sets) of turbines arranged side by side in the line width direction. Thereby, the steam turbine ship 1 provided with two propellers can be implement | achieved.

In addition, the shaft generator 17 is connected to the port 2 which rotates one propeller 12 and the starboard 3 which rotates another propeller 12, respectively. Moreover, since these shaft generators 17 are connected so that electric power can be exchanged with each other, the rotation speed of each propeller 12 can be easily synchronized.

By controlling the power recovery amount and power recovery amount of the shaft generators of the starboard port and the port port, it is also possible to change the rotational speeds of the left and right propellers and to have an auxiliary function of the steering gear for changing the traveling direction of the steam turbine ship.

2, the 2nd Embodiment of the steam turbine ship which concerns on this invention is described.

The steam turbine ship 21 according to the present embodiment is different from the first embodiment described above in that the shaft generator 17 is directly attached to an intermediate shaft (not shown) without passing through the speed increaser 16. Since other components are the same as those of the first embodiment described above, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment mentioned above.

The shaft generator 17 has a function as a generator that is generated by rotating the intermediate shaft and a motor (pseudo motor) that rotates the intermediate shaft by receiving electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board). As a device having a function as a function, in this embodiment, as shown by the broken arrow in FIG. 2, it is connected so that electric power can be exchanged with the other shaft generator 17 arrange | positioned at the opposite side.

According to the steam turbine ship 21 which concerns on this embodiment, since the shaft generator 17 is directly attached to the intermediate shaft without passing through the gearbox 16, the gearbox 16 may not be needed and an engine room may be needed. The installation space in the inside can be reduced.

In addition, by eliminating the need for the speed increaser 16, the number of parts in the reduction apparatus can be reduced, and the manufacturing cost can be reduced, and the weight can be reduced.

In addition, by reducing the number of parts, maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, working time required for maintenance inspection can be shortened, and maintenance space required for maintenance inspection Can be reduced.

Since the other effect is the same as that of 1st Embodiment mentioned above, the description is abbreviate | omitted here.

3, the 3rd Embodiment of the steam turbine ship which concerns on this invention is described.

The steam turbine ship 31 which concerns on this embodiment is provided with the electric motor (vase motor) 32 instead of the shaft generator 17 attached to the intermediate shaft of the port side, and is attached to the intermediate shaft of the starboard side. The generator 33 is different from the second embodiment described above in that a generator 33 is provided instead of the generator 17. Since other components are the same as those of the above-described second embodiment, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 2nd Embodiment mentioned above.

The electric motor 32 is a driving device configured to rotate the rotating shaft 32a by receiving electric power from the generator 33, and the rotating shaft 32a is formed of the second stage reducer 9 via a cup ring or a joint (not shown). It is connected to the 2nd gear 9a, and the rotating shaft 32a, the 2nd gear 9a, the coupling shaft 14, and the 1st gear 8b of the 1st gearhead 8 are integrated in the same direction. It is supposed to rotate.

The generator 33 is a power generator that is generated by the rotation of the rotary shaft 33a, and the electric power generated by the generator 33 is supplied to the electric motor 32 arranged on the port side, as indicated by a broken arrow in FIG. 3. It is supposed to be. In addition, the rotary shaft 33a is connected to the second gear 9a of the second gear reducer 9 via a cup ring or seam (not shown), and the rotary shaft 33a and the second gear 9a are connected to each other. The first displacement 8b of the shaft 14 and the first gear reducer 8 is integrally rotated in the same direction.

According to the steam turbine ship 31 which concerns on this embodiment, since it is enough even if the expensive shaft generator 17 is not attached to an intermediate shaft in a comparatively large size, the installation space in an engine room can be reduced, Savings can be further improved.

Further, as a characteristic at low load, the output of the starboard port indicated by the forward high pressure turbine 6 and the forward medium pressure turbine 7 becomes larger than the output of the port port represented by the forward low pressure turbine 4, By dividing a portion of the generated output into the port, the propeller 12 can be synchronized.

By controlling the power recovery amount of the generator of the starboard and the electric power supply to the motor of the port, it is also possible to change the rotational speed of the propellers on the left and the right side so as to have an auxiliary function of the steering gear that changes the traveling direction of the steam turbine ship.

Since the other effect is the same as that of 2nd Embodiment mentioned above, the description is abbreviate | omitted here.

4, 4th Embodiment of the steam turbine ship which concerns on this invention is described.

The steam turbine ship 41 which concerns on this embodiment differs from 3rd Embodiment mentioned above in that the generator 33 is provided instead of the electric motor 32. Since other components are the same as those in the above-described third embodiment, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 3rd Embodiment mentioned above.

According to the steam turbine ship 41 which concerns on this embodiment, the synchronization of the rotation speed of the port 2 and the rotation speed of the starboard 3 can be performed by adjusting the load of each generator 33 (it can be performed. Therefore, all the power generated by each generator 33 can be consumed (used) as a driving power source of auxiliary machinery installed in the engine room or an onboard power source such as inboard lighting, so as to separately prepare a power generator (for example, a main generator or Output of the secondary generator, etc.) can be made smaller.

By controlling the power recovery amount of the generator of the starboard and the power recovery amount of the generator of the port, it is also possible to change the number of revolutions of the propellers on the left and the right side so as to have an auxiliary function of the steering gear that changes the direction of travel of the steam turbine ship.

Since the other effect is the same as that of 3rd Embodiment mentioned above, the description is abbreviate | omitted here.

5, 5th Embodiment of the steam turbine ship which concerns on this invention is described.

In the steam turbine ship 51 according to the present embodiment, a starboard machine (first propulsion turbine) 52 is provided in place of the starboard machine 3, and the second stage reducer 9 is provided with a third stage reducer ( It differs from 4th Embodiment mentioned above in that it is connected (combined) via 53). Since other components are the same as those of the above-described fourth embodiment, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 4th Embodiment mentioned above.

The starboard machine 52 is provided with the forward high pressure turbine 6 and the forward medium pressure turbine 7.

The forward high pressure turbine 6 and the forward medium pressure turbine 7 are connected via a turbine rotor (not shown), and the forward high pressure turbine 6 is a superheater of a main boiler not shown. The superheated steam heated above the saturation temperature flows in, and the superheated steam heated above the saturation temperature flows into the forward medium pressure turbine 7 by a reheater (not shown). The steam introduced into the forward high pressure turbine 6 and the forward medium pressure turbine 7 is converted into kinetic energy by the heat energy retained by the steam during the flow in the nozzle (not shown), thereby becoming a high speed steam. This high velocity steam acts on a turbine blade (not shown) to rotate the turbine rotor. Rotation of the turbine rotor is decelerated by the first stage reducer 8 and the second stage reducer 9, and the starboard side is passed through the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. It is supposed to be delivered to the propeller 12. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

In addition, the superheated steam heated above the saturation temperature flows into the reverse turbine 5 of the port 2 by the superheater of the main boiler which is not shown in figure.

The second gear 9a is connected to the third gear 53a, which is an element of the third gear reducer 53, via the coupling shaft 54, and the second gear 9a, the coupling shaft 14 ), The first gear 8b, the coupling shaft 54 and the third gear (gear) 53a of the first gear reducer 8 are integrally rotated in the same direction. Moreover, the 3rd gearwheel 53a engages (engages) with the 3rd gearwheel (gear) 53b which is an element of the 3rd gear | gear reducer 53. As shown in FIG.

The third gear 53b is connected to the rotation shaft 33a of the generator 33 via a coupling or seam not shown, and the third gear 53b and the rotation shaft 33a are integrally formed in the same direction. It is supposed to rotate. Moreover, the 3rd gearwheel 53b engages (engages) with the 3rd gearwheel (gear) 53c which is an element of the 3rd gear | gear reducer 53. As shown in FIG.

The third gear 53c engages (engages) with the third gear (gear) 53d, which is one element of the third gear reducer 53.

The third middle gear 53d is connected to the second small gear 9a which is an element of the second stage reducer 9 arranged on the port side via the connecting shaft 53, and the third middle gear 53d. The coupling shaft 55, the second small gear 9a, the coupling shaft 14 and the first gear 8b of the first gear reducer 8 are integrally rotated in the same direction.

According to the steam turbine ship 51 which concerns on this embodiment, since it is not necessary to arrange the reverse turbine 5 on the coaxial of the starboard 52, the axial length of the starboard 52 can be reduced. Therefore, the installation space in the engine room can be further reduced.

Moreover, according to the steam turbine ship 51 which concerns on this embodiment, the 3rd gear | gear reducer 53 can always synchronize the rotation speed of the port 2 with the rotation speed of the starboard 52 ( All the power generated by the generator 33 can be consumed (used) as a driving power source for auxiliary machinery installed in the engine room or an onboard power source such as inboard lighting, and is separately prepared. Output of the generator, etc.) can be reduced as much.

Since the other effect is the same as that of 4th Embodiment mentioned above, the description is abbreviate | omitted here.

6, 6th Embodiment of the steam turbine ship which concerns on this invention is described.
The steam turbine ship 61 which concerns on this embodiment is provided with the starboard machine 52 instead of the starboard machine 3, and replaces the auxiliary turbine (virtual turbine) 62 instead of the shaft generator 17 arrange | positioned at the port side. ), And the reverse turbine (5) is provided in place of the shaft generator (17) arranged on the starboard side, and the shaft generator (17) is attached to each intermediate shaft. It is different from form. Since other components are the same as those of the first embodiment described above, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 1st Embodiment mentioned above.

The auxiliary turbine (for example, the output 3000KW turbine) 62 arranged on the port side is a driving device configured to rotate the turbine rotor (not shown) by receiving steam from a reheater (not shown). The rotor is connected to the first gear 16b, which is an element of the speed increaser 16, via a connecting shaft 63 (or a cup ring or seam not shown), and includes a turbine rotor, a connecting shaft 63, and The first gear 16b is integrally rotated in the same direction. The secondary turbine 62 is supplied with superheated steam heated above the saturation temperature by the reheater. The steam introduced into the auxiliary turbine 62 is converted into kinetic energy by the heat energy held by the steam during the flow in the nozzle (not shown), thereby becoming a high speed flow steam. This high velocity steam acts on a turbine blade (not shown) to rotate the turbine rotor. Rotation of the turbine rotor is increased in the speed reducer 16 and then decelerated in the second stage reducer 9, via a thrust shaft (not shown), an intermediate shaft (not shown), and a propeller shaft 11. It is supposed to be transmitted to the port side propeller 12. The thrust of the port propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

In addition, the steam passing through the auxiliary turbine 62 flows into a main condenser (M / C) (not shown).

The reverse turbine 5 arranged on the starboard side is connected to the first gear 16b, which is an element of the speed increaser 16, via a connecting shaft 64 (or a coupling or seam not shown). The turbine rotor, the coupling shaft 64 and the first small difference wheel 16b are integrally rotated in the same direction.

In addition, the superheated steam heated above the saturation temperature by the superheater of the main boiler not shown flows into the reverse turbine 5 arranged on the port side and the reverse turbine 5 arranged on the starboard side. The steam passing through these reverse turbines 5 flows into a main condenser (not shown), respectively.

According to the steam turbine ship 61 which concerns on this embodiment, the propeller 12 of one (port side) by the forward low pressure turbine 4 (or the 8000 KW reverse turbine 5) of 20,000 KW of output, for example. Rotates, and another (starboard side) propeller 12 is driven by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) having an output meter of 20,000 KW. Will rotate. That is, two propellers 12 are rotated by two (two sets) of turbines arranged side by side in the line width direction. Thereby, the steam turbine ship 61 provided with two propellers can be implement | achieved.

In addition, since the auxiliary turbine 62 is connected to the port 2 which rotates one propeller 12, the drive output of one propeller 12 can be further improved. have.

In addition, the shaft generator 17 is connected to the intermediate shaft connected to the propeller 12 of one (port side) and the intermediate shaft connected to the propeller 12 of the other (right side), respectively, and these shaft generators 17 Are connected to exchange electric power with each other, so that the rotation speed of each propeller 12 can be easily synchronized.

By controlling the output of the auxiliary turbine and increasing or decreasing the rotational speed of the port port relative to the starboard port or controlling the power exchange of the shaft generators of the starboard port and the portboard port, the rotational speeds of the right and left propellers are changed to It can also be expected to have a secondary function of the steering gear to change the direction of travel.

In addition, since it is not necessary to arrange the reverse turbine 5 on the coaxial of the starboard 52, the axial length of the starboard 52 can be reduced, further reducing the installation space in the engine room. have.

The seventh embodiment of the steam turbine ship which concerns on this invention is described using FIG.
In the steam turbine ship 71 according to the present embodiment, the starboard machine 3 is provided in place of the starboard machine 52, and the speed increaser 16 and the reverse turbine 5 arranged on the starboard side are omitted. It differs from the 6th embodiment mentioned above in that it exists. Since other components are the same as those of the sixth embodiment described above, the description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the same member as 6th Embodiment mentioned above.

According to the steam turbine ship 71 which concerns on this embodiment, the propeller 12 of one (port side) by the forward low pressure turbine 4 (or the 8000 KW reverse turbine 5) of 20,000 KW of output, for example. Rotates, and another (starboard side) propeller 12 is driven by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) having an output meter of 20,000 KW. Will rotate. That is, two propellers 12 are rotated by two (two sets) of turbines arranged side by side in the line width direction. Thereby, the steam turbine ship 71 provided with two propellers can be implement | achieved.

In addition, since the auxiliary turbine 62 is connected to the port 2 which rotates one propeller 12, the drive output of one propeller 12 can be further improved. have.

In addition, the shaft generator 17 is connected to the intermediate shaft connected to the propeller 12 of one (port side) and the intermediate shaft connected to the propeller 12 of the other (right side), respectively, and these shaft generators 17 Are connected to exchange electric power with each other, so that the rotation speed of each propeller 12 can be easily synchronized.

By controlling the output of the auxiliary turbine to increase or decrease the rotational speed of the port port relative to the starboard port or control the exchange of electric power of the shaft generators of the starboard port and the portboard port, the rotational speed of the left and right propellers is changed to It can also be expected to have a secondary function of the steering gear that changes the direction of travel.

Moreover, since the speed increaser 16 and the reverse turbine 5 which were arrange | positioned at the starboard side may not be needed, the installation space in an engine room can be reduced.

In addition, the number of parts can be reduced by eliminating the need for the speed increaser 16 and the reverse turbine 5, and the manufacturing cost can be reduced and the weight can be reduced.

In addition, by reducing the number of parts, maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, working time required for maintenance inspection can be shortened, and maintenance space required for maintenance inspection Can be reduced.

8, 8th Embodiment of the steam turbine ship which concerns on this invention is described.
The steam turbine ship 81 which concerns on this embodiment is provided with the starboard machine 3 instead of the starboard machine 52, and the subturbine 62 is replaced with the backward turbine 5 arrange | positioned at the starboard side. It differs from the 6th embodiment mentioned above in that it is provided. Since other components are the same as those of the sixth embodiment described above, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the same member as 6th Embodiment mentioned above.

According to the steam turbine ship 81 which concerns on this embodiment, the propeller 12 of one (port side) is carried out, for example by the forward low pressure turbine 4 (or 8000 KW reverse turbine 5) of 20,000 KW of output. Rotates, and another (starboard side) propeller 12 is driven by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) having an output meter of 20,000 KW. Will rotate. That is, two propellers 12 are rotated by two (two sets) of turbines arranged side by side in the line width direction. Thereby, the steam turbine ship 81 provided with two propellers can be implement | achieved.

In addition, the auxiliary turbine 62 is connected to the port 2 which rotates one propeller 12 and the starboard 3 which rotates another propeller 12. Therefore, the drive output of each propeller 12 can be improved further.
Further, the shaft generators 17 are connected to the intermediate shafts connected to one propeller 12 and the intermediate shafts connected to another propeller 12, respectively, and these shaft generators 17 Are connected to exchange electric power with each other, so that the rotation speed of each propeller 12 can be easily synchronized. By controlling the output of the left and right auxiliary turbines to relatively increase or decrease the rotational speed of the port with respect to the starboard, or control the exchange of electric power between the shaft generators of the starboard and the port, It can also be expected to have a secondary function of a steering gear that changes the direction of travel of the steam turbine ship.

9, 9th Embodiment of the steam turbine ship which concerns on this invention is described.

As shown in FIG. 9, the steam turbine 91 which concerns on this embodiment makes the port element (2nd propulsion turbine) 92 and the starboard machine (1st propulsion turbine) 93 the main elements. Consists of.

The port 92 and starboard 93 are each provided with a forward low pressure turbine 4, a reverse turbine 5, a forward high pressure turbine 6, and a forward medium pressure turbine 7. . Moreover, the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 comprise one cycle (main engine).

The forward low pressure turbine 4, the reverse turbine 5, the forward high pressure turbine 6, and the forward medium pressure turbine 7 are connected via a turbine rotor (not shown), The superheated steam heated above the saturation temperature flows into the forward high pressure turbine 6 and the reverse turbine 5 through a superheater of a main boiler (not shown), and the steam passed through the forward high pressure turbine 6. Is introduced into a reheater (not shown), and the steam passing through the reverse turbine (5) is introduced into a main condenser (M / C) (not shown). In addition, steam passing through the reheater flows into the forward medium pressure turbine 7, and steam passing through the forward medium pressure turbine 7 flows into the low pressure turbine 4 for the forward movement and the low pressure turbine 4 for the forward movement. The steam passing through the gas is introduced into a main condenser not shown. Steam introduced into the forward low pressure turbine 4, the reverse turbine 5, the forward high pressure turbine 6, and the forward medium pressure turbine 7 is retained while it flows through a nozzle (not shown). The thermal energy is converted into kinetic energy and becomes a high velocity steam. This high velocity steam acts on a turbine blade (not shown) to rotate the turbine rotor. Rotation of the turbine rotor is decelerated by the first stage reducer 8 and the second stage reducer 9, and the port side is passed through a thrust shaft (not shown), an intermediate shaft (not shown), and a propeller shaft 11. It is supposed to be delivered to the propeller 12. The thrust of the port propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

delete

According to the steam turbine 91 which concerns on this embodiment, the turbine provided with the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 of an output meter of 20,000 KW, for example 8000 kW reverse turbine 5] rotates one propeller 12, the forward low pressure turbine 4, the high pressure turbine 6 for forward and the medium pressure for forward 20,000 kW. The turbine (or 8000 kW reverse turbine 5) provided with the turbine 7 causes the other propeller 12 to rotate. That is, two propellers 12 are rotated by two (two sets) of turbines arranged side by side in the line width direction. Thereby, the steam turbine ship 91 provided with two propellers can be implement | achieved.

In addition, the shaft generator 17 is connected to the intermediate shaft connected to the propeller 12 of one (port side) and the intermediate shaft connected to the propeller 12 of the other (right side), respectively, and these shaft generators 17 ) Are connected to exchange power with each other, so that the rotation speed of each propeller 12 can be easily synchronized. By controlling the power exchange between the star generators and the port generators, it is also possible to change the rotational speeds of the left and right propellers and to have an auxiliary function of the steering gear for changing the traveling direction of the steam turbine ship.

In addition, since the port 92 which rotates one propeller 12 and the starboard 93 which rotates another propeller 12 can be controlled independently, respectively. Controllability can be improved.

In addition, this invention is not limited to embodiment mentioned above, It can also implement suitably combining above-mentioned embodiment as needed suitably, Furthermore, each embodiment is modified and implemented in the range which does not deviate from the technical idea of this invention. You can also change it.

BRIEF DESCRIPTION OF THE DRAWINGS The principal part schematic plan view which shows the 1st Embodiment of the steam turbine ship which concerns on this invention,

2 is a principal part schematic plan view showing a second embodiment of a steam turbine according to the present invention;

3 is a principal part schematic plan view showing a third embodiment of a steam turbine according to the present invention;

4 is a principal part schematic plan view showing a fourth embodiment of a steam turbine according to the present invention;

5 is a principal part schematic plan view showing a fifth embodiment of a steam turbine according to the present invention;

6 is a principal part schematic plan view showing a sixth embodiment of a steam turbine ship according to the present invention;

7 is a principal part schematic plan view showing a seventh embodiment of a steam turbine according to the present invention;

8 is a schematic plan view of the main parts of an eighth embodiment of a steam turbine according to the present invention;

9 is a schematic plan view of principal parts of a ninth embodiment of a steam turbine according to the present invention;

Explanation of symbols for the main parts of the drawings

1: steam turbine ship 2: port port (second propulsion turbine)

3: starboard (first propulsion turbine) 4: low pressure turbine for forward

5: backward turbine 6: forward high pressure turbine

7: forward medium pressure turbine 12: propeller

17 shaft generator 21 steam turbine ship

31 steam turbine ship 32 electric motor

33: generator 41: steam turbine ship

51 steam turbine ship 52 starboard (first propulsion turbine)

53a: third intermediate gear (gear) 53b: third intermediate gear (gear)

53c: third intermediate gear (gear) 53d: third intermediate gear (gear)

61 steam turbine ship 62 auxiliary turbine

71: steam turbine ship 81: steam turbine ship

91: steam turbine ship 92: port port (second propulsion turbine)

93: starboard (first propulsion turbine)

Claims (15)

The first propulsion turbine in which the forward high pressure turbine, the forward medium pressure turbine and the reverse turbine are arranged on one axis, and the second propulsion turbine in which the forward low pressure turbine and the reverse turbine are arranged on one axis have a line width ( I) arranged along the direction, wherein the first propeller rotates by the first propulsion turbine, and the second propeller rotates by the second propulsion turbine. Steam turbine ship. The method of claim 1, A shaft generator is connected to each of the first propulsion turbine and the second propulsion turbine, and the shaft generators are connected to exchange power with each other. Steam turbine ship. The method of claim 1, A generator is connected to the first propulsion turbine, an electric motor is connected to the second propulsion turbine, and these generators and the electric motor are electrically connected. Steam turbine ship. The method of claim 1, A generator is connected to the first propulsion turbine and the second propulsion turbine, respectively. Steam turbine ship. The method of claim 1, An auxiliary turbine is connected to the second propulsion turbine. Steam turbine ship. The method of claim 1, An auxiliary turbine is connected to the first propulsion turbine and the second propulsion turbine, respectively. Steam turbine ship. A first propulsion turbine comprising only a forward high pressure turbine and a forward medium pressure turbine, and a second propulsion turbine in which the forward low pressure turbine and the reverse turbine are arranged on one axis are arranged along the line width direction; The first propeller rotates by the first propulsion turbine, and the second propeller rotates by the second propulsion turbine. Steam turbine ship. The method of claim 7, wherein The first propulsion turbine and the second propulsion turbine are mechanically connected via a plurality of gears, and a generator is connected to one of the gears. Steam turbine ship. The method of claim 7, wherein A reverse turbine is connected to the first propulsion turbine, and an auxiliary turbine is connected to the second propulsion turbine, respectively. Steam turbine ship. A first propulsion turbine having a forward high pressure turbine, a forward medium pressure turbine, a forward low pressure turbine and a reverse turbine arranged on one axis, a forward high pressure turbine, a forward medium pressure turbine, a forward low pressure turbine, and a reverse The 2nd propulsion turbine with a turbine arrange | positioned on one axis is arrange | positioned along the line width direction, The 1st propeller rotates by the said 1st propulsion turbine, and the 2nd propulsion turbine makes Characterized in that the propeller is configured to rotate Steam turbine ship. The method of claim 2, An auxiliary turbine is connected to the second propulsion turbine. Steam turbine ship. The method of claim 2, An auxiliary turbine is connected to the first propulsion turbine and the second propulsion turbine, respectively. Steam turbine ship. The method according to any one of claims 1, 5 to 7, or 9 to 12, A shaft generator is connected to the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller, respectively, and these shaft generators are connected to exchange power with each other. Steam turbine ship. The method according to any one of claims 1 to 12, The forward high pressure turbine, the forward medium pressure turbine and the forward low pressure turbine constitutes a reheat turbine. Steam turbine ship. The method of claim 13, The forward high pressure turbine, the forward medium pressure turbine and the forward low pressure turbine constitutes a reheat turbine. Steam turbine ship.

Images