KR20090023003A - Steam turbine ship - Google Patents

Abstract

A steam turbine ship is provided to rotate a propeller at identical RPM by interchanging load applied to a turbine through a shaft generator. A steam turbine comprises a high pressure turbine(6) for advancing; a first propulsive turbine(3) in which a medium pressure turbine(7) for advancing and a turbine(5) for retreating are arranged onto a single shaft; and a second propulsive turbine(2) in which a low pressure turbine(4) for advancing and a turbine for retreating are arranged onto one shaft. The propulsive turbine is arranged along the width direction of a ship. A first propeller(12) is rotated by the first propulsive turbine. A second propeller is rotated by the second propulsive turbine. Shaft generators(17) are connected to the first propulsive turbine and the second propulsive turbine, respectively. The shaft generators exchanges electricity mutually.

Description

Steam Turbine Ship {STEAM TURBINE SHIP}

The present invention relates to a steam turbine ship provided with one propeller.

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

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

In the marine steam turbine disclosed in Patent Document 1, the high pressure turbine and the low pressure turbine are arranged side by side in the line width direction (at each place along the line width direction), and these high pressure turbines and the low pressure turbine are also provided. The propeller is rotated by the marine steam turbine provided with the gearbox via a reduction gear. Therefore, when attempting to twine a steam turbine ship, two high-pressure turbines and two low-pressure turbines are required, and all of these high-pressure turbines and low-pressure turbines are installed in an engine room with limited installation space (especially in the line width direction). There was a problem that it was difficult to do it, 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 In order to solve the said subject, this invention employ | adopted the following means.

A steam turbine ship according to the present invention includes a first propulsion turbine in which a forward high pressure turbine, a forward medium pressure turbine, and a reverse turbine are disposed on one axis, and a forward low pressure turbine and a reverse turbine are disposed on one axis. The second propulsion turbine is arranged along the line width direction, and the first propeller is rotated by the first propulsion turbine, and the second propeller is rotated 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 of the low pressure portion increases as the load increases, and the first propulsion turbine and the first engine are changed by the change in the engine output. Since output deviations occur between the two propulsion turbines, a structure for compensating the output deviations of both types must be added to this type of turbine arrangement. Moreover, it can also be expected to have the auxiliary function of the steering gear which changes the advancing direction of a steam turbine ship by changing the rotation speed of the right and left propellers using the structure to compensate for the output deviation.

In the steam turbine ship, it is further preferable that shaft generators are connected to the first propulsion turbine and the second propulsion turbine, respectively, and these shaft generators are connected to each other so as to be able to electrically exchange with each other. Do.

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 rotating the propellers. Can be motivated.

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 preferable that a generator is connected to the first propulsion turbine, an electric motor is connected to the second propulsion turbine, respectively, and these generators and the electric motor are further 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, the first propeller and the second propeller rotational speed can be easily synchronized.

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

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 steam turbine ship, it is preferable that a generator is connected to the first propulsion turbine and the second propulsion turbine, respectively.

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 taken (adjusted) by adjusting the load of each generator, and surplus electric power other than the power required for synchronization, It can be consumed (used) as on-board power supply for auxiliary machinery installed in the engine room or onboard lighting, etc., and the output of a separately-produced generator (for example, a main generator or a secondary generator) can be reduced by that much. . In addition, 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, it is possible to change the rotational speed of the propellers on the left and right of the steering gear to change the traveling direction of the steam turbine ship. It can also be expected to have a secondary function.

In the steam turbine ship, it is further preferable that an auxiliary turbine is connected to the second 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 the 2nd propulsion turbine is low compared with a 1st propulsion turbine, an auxiliary turbine is used. By operating, 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 number of revolutions 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 further preferred 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, by changing the rotational speed of the left and right propellers, and having the auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship. You can expect

The steam turbine ship according to the present invention includes a first propulsion turbine comprising only a forward high pressure turbine and a forward medium pressure turbine, and a second propulsion turbine having a forward low pressure turbine and a reverse turbine arranged on one axis. The first propeller is rotated by the first propulsion turbine, and the second propeller is rotated by the second propulsion turbine.

According to the steam turbine ship which concerns on this invention, two propellers are rotated by 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.

Also in this configuration, since the characteristics of the steam turbine that the high-pressure part mainly works at the low load and the work rate of the low-pressure part increases as the load increases, the first propulsion turbine is changed by the change of the engine output. A structure is to be added to compensate for the output deviation occurring between and the second propulsion turbine.

In the steam turbine ship, it is further 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 taken (adjusted) by the several gear which mechanically connects a 1st propulsion turbine and a 2nd propulsion turbine. The entire electric power generated by the generator can be consumed (used) as a power source for auxiliary machinery installed in the engine room, or as an internal power source for inboard lighting, so that a separate power generator (e.g., main The output of a generator, a sub generator, etc. can be made small.

In the steam turbine ship, it is preferable that a reverse turbine is connected to the first propulsion turbine, and an auxiliary turbine is connected to the second propulsion turbine, respectively.

According to such a steam turbine ship, the axial length of a 1st propulsion turbine can be reduced, without having to arrange a reverse turbine on the coaxial of a 1st propulsion turbine, and further reduce the installation space in an engine room. 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 to increase the first propeller. The propeller can be synchronized with the second propeller. By controlling the output of the auxiliary turbine and increasing or decreasing the rotation speed of the second propeller relative to the first propeller, it can also be expected to have an auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship.

A steam turbine ship according to the present invention includes a first propulsion turbine having a forward high pressure turbine, a forward medium pressure turbine, a forward low pressure turbine, and a reverse turbine disposed on one axis, a forward high pressure turbine, and a forward low pressure turbine. And a second propulsion turbine in which the reverse turbine is disposed on one axis, is arranged along the linear axis direction, and the first propeller is rotated by the first propulsion turbine, and the second propeller is driven by the second propulsion turbine. Is configured to rotate.

According to the steam turbine ship which concerns on this invention, two propellers are rotated 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.

Further, since the load characteristics of the first propulsion turbine and the second propulsion turbine can be made equal, the synchronization between the first propeller and the second propeller can be facilitated. By controlling the output of the 1st propulsion turbine and the output of the 2nd propulsion turbine, it can also be expected to have the auxiliary function of the steering gear which changes the advancing direction of a steam turbine ship by changing the rotation speed of the right and left propellers.

In the steam turbine ship, a shaft generator is connected to an intermediate shaft connected to the first propeller and an intermediate shaft connected to the second propeller, respectively, and these shaft generators are configured to allow electrical exchange with each other. It is also preferable if it is connected.

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

In addition, by eliminating the need for an increase in speed, the number of parts can be reduced, so that maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, and work time required for maintenance inspection can be shortened. It can plan, and reduction of maintenance space necessary at the time of maintenance inspection can be aimed at.

In the steam turbine ship, it is preferable that the forward medium pressure turbine and the forward low pressure turbine serve as 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 that it can biaxialize 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 ship (1st propulsion turbine) 3 as main components. .

The port 2 includes a forward low pressure turbine 4 and a reverse turbine 5, and the starboard 3 includes a forward high pressure turbine 6, a forward medium pressure turbine 7, And a reverse turbine 5. Further, the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 constitute one (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 reheat turbine.

The forward low pressure turbine 4 and the reverse low pressure turbine 5 are connected via one 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 machine 3 flows into the reverse turbine 5. The steam flowing into the forward turbine 4 and the backward turbine 5 flows into the nozzle (not shown), and the thermal energy held therein 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 in 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 delivered. The thrust of the port propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

The 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 pinion 8a, which is an element of the first stage reducer 8, via the coupling shaft 13 (or a coupling or seam not shown), and the turbine rotor and the coupling shaft. 13 and the 1st pinion 8a are integrally rotated in the same direction. Moreover, the 1st pinion 8a engages (engages) with the 1st gear wheel 8b which is 1 element of the 1st stage reducer 8.

The 1st gearwheel 8b is connected with the 2nd pinion 9a which is 1 element of the 2nd speed reducer 9 via the connecting shaft 14, The 1st gearwheel 8b and the connecting shaft 14 ) And the second pinion 9a are integrally rotated in the same direction. In addition, the second pinion 9a engages (engages) with the second gear wheel 9b which is one element of the second stage reducer 9.

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

The second pinion 9c is connected to the first gearwheel 16a, which is one element of the increase speed 16, via the connecting shaft 15, and the second pinion 9c, the connecting shaft 15, and the first The one gear wheel 16a rotates integrally in the same direction. In addition, the first gear wheel 16a engages (engages) with the first pinion 16b, which is one element of the speed increaser 16.

The first pinion 16b is connected to the rotation shaft 17a of the shaft generator (SG) 17 via a cup ring or seam (not shown), and the first pinion 16b and the rotation shaft 17a are the same. It is made to rotate integrally in the direction.

The shaft generator 17 receives a function as a generator that generates power as the rotary shaft 17a is rotated and receives electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board), and the rotary shaft 17a. ) Is a device having a function as an electric motor (pseudo motor) for rotating), and in this embodiment, as shown by the broken arrow in FIG. 1, it is electrically exchanged with another shaft generator 17 arranged on the starboard side. You are connected to

The forward high pressure turbine 6, the forward medium pressure turbine 7, and the reverse turbine 5 are connected via a single turbine rotor (not shown), and the forward high pressure turbine 6 or reverse The superheated steam heated to the saturation temperature or more by the superheater of the boiler (Main Boiler) which is not shown in figure flows into the industrial turbine 5, and the reheater (not shown) is carried out to the forward medium pressure turbine (7). The superheated steam heated above the saturation temperature is introduced. The steam flowing into the forward high pressure turbine 6, the forward medium pressure turbine 7, and the reverse turbine 5 flows through a nozzle (not shown), and the thermal energy held therein is converted into kinetic energy. This high-speed flow steam, which becomes the flow steam, acts on a turbine blade (not shown) to rotate the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage reducer 8 and the second stage reducer 9 to rotate the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. It is transmitted to starboard side propeller (second propeller) 12 via it. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

The steam passing through the forward high pressure turbine 6 is returned to the reheater and heated.

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

The first gearwheel 8b is connected to the second pinion 9a, which is an element of the second gear reducer 9, via the connecting shaft 14, and the first gearwheel 8b and the connecting shaft 14 , And the second pinion 9a are integrally rotated in the same direction. In addition, the second pinion 9a engages with (engages with) the second gear wheel 9b which is one element of the second speed reducer 9.

The second gear wheel 9b is connected to the thrust shaft (not shown), the second gear wheel 9b, the thrust shaft (not shown), the intermediate shaft (not shown), the propeller shaft 11, The propeller 12 is integrally rotated in the same direction. In addition, the second gear wheel 9b also meshes with (engages) with the second pinion 9c.

The second pinion 9c is connected to the first gearwheel 16a which is one element of the increase speed 16 via the connecting shaft 15, and the second pinion 9c, the connecting shaft 15, and The first gear wheel 16a rotates integrally in the same direction. In addition, the first gear wheel 16a engages (engages) with the first pinion 16b, which is one element of the speed increaser 16.

The first pinion 16b is connected to the rotation shaft 17a of the shaft generator (SG) 17 via a coupling or seam not shown, and the first pinion 16b and the rotation shaft 17a are the same. It is made to rotate integrally in the direction.

The shaft generator 17 receives a function as a generator that generates power as the rotary shaft 17a is rotated and receives electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board), and the rotary shaft 17a. Is a device having a function as an electric motor (virtual motor) that rotates, and in this embodiment, as shown by a broken arrow in FIG. 1, it is electrically exchanged with another shaft generator 17 arranged on the port side. You are connected to

According to the steam turbine 1 which concerns on this embodiment, the propeller (one of the port side) is made, for example by the forward low pressure turbine 4 (or the 8000 KW backward turbine 5) of 20,000 KW of outputs (the port side). 12) is rotated, and another (star side) by the forward high-pressure turbine 6 and forward medium-pressure turbine 7 (or 8000 KW reverse turbine 5) of 20,000 KW output meter The propeller 12 is rotated. 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, in the port 2 which rotates one propeller 12 and the starboard 3 which rotates another propeller 12, the shaft generator 17 is each. The shaft generators 17 are connected to each other so as to be electrically connected to each other, so that the rotation speeds of the propellers 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 speed of the left and right propellers, and to have the auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship. .

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

The steam turbine ship 21 which concerns on this embodiment is the thing of 1st Embodiment mentioned above in that the shaft generator 17 was directly attached to the intermediate shaft (not shown), without going through the speed increaser 16. different. 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 is a motor (gase motor) that rotates the intermediate shaft by receiving a function of a generator that is generated by rotating the intermediate shaft and electric power from a separately prepared generator (for example, a main generator or shaft generator installed on board). In this embodiment, as shown by the broken arrow in FIG. 2, it connects with the other shaft generator 17 arrange | positioned at the opposite side so that an electrical exchange is possible.

According to the steam turbine ship 21 which concerns on this embodiment, since the axial generator 17 is directly attached to the intermediate shaft without passing the throttle 16, the throttle 16 can be made unnecessary, and the engine The installation space in the room can be reduced.

In addition, by eliminating the increase accelerator 16, the number of parts in the reduction apparatus can be reduced, 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, and work time required for maintenance inspection can be shortened, which is required for maintenance inspection. It is possible to reduce the maintenance space.

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

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

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 provided in place of the generator 17, which is different from the above-described second embodiment. Since other components are the same as those of the second 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 2nd Embodiment mentioned above.

The electric motor 32 is a drive device configured to rotate the rotary shaft 32a by receiving electric power from the generator 33, and the rotary shaft 32a is the second stage reducer 9 via a cup ring or a joint (not shown). Is connected to the second pinion 9a of the rotary shaft 32a, the second pinion 9a, the connecting shaft 14, and the first gear wheel 8b of the first gear reducer 8 in the same direction. It is intended to rotate integrally.

The generator 33 is a power generating device that generates power as the rotating shaft 33a is rotated, and the electric power generated by the generator 33 is indicated by a broken arrow in FIG. 3, and is disposed on the port side. To be supplied). In addition, the rotary shaft 33a is connected to the second pinion 9a of the second stage reducer 9 via a cup ring or seam (not shown), and the rotary shaft 33a, the second pinion 9a, and the connecting shaft. The first gear wheel 8b of the 14 and the first speed reducer 8 are integrally rotated in the same direction.

According to the steam turbine ship 31 which concerns on this embodiment, since it is comparatively large and it is finished even if the expensive shaft generator 17 is not attached to an intermediate shaft, the installation space in an engine room can be reduced and the manufacturing cost is further increased. Further reduction can be achieved.

In addition, since the output of the starboard indicated by the forward high voltage turbine 6 and the forward medium pressure turbine 7 becomes larger than the output of the port indicated by the forward low pressure turbine 4 as a characteristic at low load, the starboard The propeller 12 can be synchronized by dividing a part of the output generated by the port into the port.

By controlling the power recovery amount of the generator of the starboard and the power supply to the motor of the port, it is also possible to change the number of revolutions of the propellers on the left and right to have the auxiliary function of the steering gear to change the traveling direction of the steam turbine ship. have.

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

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

The steam turbine ship 41 which concerns on this embodiment differs from the thing of 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 member same 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 is performed by adjusting the load of each generator 33 (it is performed). Since all electric power generated by each generator 33 can be consumed (used) as a driving power source for auxiliary machinery installed in an engine room, or an onboard power source such as inboard lighting, it is possible to prepare a separate power generator (for example, The output of the main generator, the sub generator, etc. can be reduced by that much.

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 right, and to have the auxiliary function of the steering gear to change the direction of the steam turbine ship. have.

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

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

As for the steam turbine ship 51 which concerns on this embodiment, the starboard machine (the 1st propulsion turbine) 52 is provided instead of the starboard machine 3, and the 2nd stage reducer 9 comrades is 3rd. However, it differs from the thing of 4th Embodiment mentioned above in that it is connected (coupled) via the speed reducer 53. FIG. Since the other components are the same as those in the fourth embodiment described above, the description of these components is omitted here.

In addition, the same code | symbol is attached | subjected to the member same 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 not shown in the figure (Main Boiler). The superheated steam heated above the saturation temperature is introduced by the superheater, and the superheated steam heated above the saturation temperature by the reheater (not shown) flows into the forward medium pressure turbine (7). . As the steam flowing into the forward high pressure turbine 6 and the forward medium pressure turbine 7 flows through the inside of the nozzle (not shown), the retained thermal energy is converted into kinetic energy and becomes steam of high speed flow. This high speed steam acts on a turbine blade (not shown) to rotate the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage reducer 8 and the second stage reducer 9 to rotate the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. It is transmitted to starboard side propeller 12 via it. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

Moreover, the superheated steam heated above the saturation temperature by the superheater of the boiler (Main Boiler) which is not shown in figure 5 flows into the reverse turbine 5 of the port 2.

The second pinion 9a is connected to the third heavy gear 53a which is one element of the third stage reducer 53 via the connecting shaft 54, and the second pinion 9a and the connecting shaft 14 are connected to each other. The first gear wheel 8b, the coupling shaft 54, and the third heavy gear (gear) 53a of the first gear reducer 8 are integrally rotated in the same direction. In addition, the third heavy gear 53a engages with (engages with) the third heavy gear (gear) 53b which is one element of the third stage reducer 53.

The 3rd heavy gear 53b is connected to the rotating shaft 33a of the generator 33 via the coupling or seam which is not shown in figure, and the 3rd heavy gear 53b and the rotating shaft 33a are integrated in the same direction. It is supposed to rotate. Moreover, the 3rd heavy gear 53b engages (engages) with the 3rd heavy gear (gear) 53c which is an element of the 3rd stage reducer 53. As shown in FIG.

The 3rd heavy gear 53c engages (engages) with the 3rd heavy gear (gear) 53d which is one element of the 3rd speed reducer 53. As shown in FIG.

The 3rd heavy gear 53d is connected with the 2nd pinion 9a which is one element of the 2nd stage reducer 9 arrange | positioned at the port side via the connecting shaft 53, and is the 3rd heavy gear 53d. , The coupling shaft 55, the second pinion 9a, the coupling shaft 14, and the first gear wheel 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 | position the backward 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.

In addition, according to the steam turbine ship 51 which concerns on this embodiment, the 3rd speed reducer 53 always synchronizes the rotation speed of the port 2 with the rotation speed of the starboard 52 (which is adjusted). Since all electric 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, it is possible to separately prepare a power generating apparatus (for example, a main power supply). The output of a generator, a sub generator, etc. can be made small.

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

A sixth embodiment of a steam turbine ship according to the present invention will be described with reference to FIG. The steam turbine ship 61 which concerns on this embodiment is provided with the starboard 52 instead of the starboard 3, and replaces the auxiliary turbine (gase turbine) instead of the shaft generator 17 arrange | positioned at the port side. (62) is provided, and instead of the shaft generator (17) arranged on the starboard side, a reverse turbine (5) is provided, and the shaft generator (17) is attached to each intermediate shaft. Is different from that of the first embodiment described above. 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.

An auxiliary turbine (for example, a turbine having an output of 3000 KW) 62 disposed at the port side is a driving device configured to rotate a turbine rotor (not shown) by receiving steam from a reheater (not shown). The turbine rotor is connected to the first pinion 16b, which is an element of the speed increaser 16, via a connecting shaft 63 (or a cup ring or seam not shown), and the turbine rotor and the connecting shaft ( 63 and the first small gear 16b are integrally rotated in the same direction. The superheated steam which is heated above the saturation temperature by the reheater flows into the auxiliary turbine 62. As the steam flowing into the auxiliary turbine 62 flows inside the nozzle (not shown), the retained thermal energy is converted into kinetic energy, thereby becoming a high-speed flow steam. This high speed steam acts on a turbine blade (not shown) to rotate the turbine rotor. After the rotation of the turbine rotor is increased in the increase speed 16, the speed decreases in the second speed reducer 9, and the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft ( It is to be transmitted to the port propeller 12 via 11). The thrust of the port-side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

Moreover, the steam which passed the auxiliary turbine 62 flows into the main condenser (M / C) which is not shown in figure.

The reverse turbine 5 arranged on the starboard side is connected to the first pinion 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 connecting shaft 64, and the first pinion 16b are integrally rotated in the same direction.

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

According to the steam turbine ship 61 which concerns on this embodiment, the propeller (one of the port side) is made, for example by the forward low pressure turbine 4 (or 8000 KW reverse turbine 5) of 20,000 KW of outputs (the port side). 12) is rotated, and the propeller of another (star side) is made by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) with an output meter of 20,000 KW. (12) is rotated. 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 the propeller 12 of one (port side), the drive output of the one (port side) of the propeller 12 can be further improved. Can be.

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 another (star side), respectively, and these shafts Since the generators 17 are connected to each other so as to be able to communicate with each other electrically, the rotation speeds of the propellers 12 can be easily synchronized.

By controlling the output of the auxiliary turbine and increasing or decreasing the rotational speed of the port with respect to the starboard, or by controlling the exchange of the output of the shaft generators of the starboard and the port, the rotation 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.

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, thereby further reducing the installation space in the engine room. have.

A seventh embodiment of a steam turbine ship according to the present invention will be described with reference to FIG. 7. The steam turbine ship 71 according to the present embodiment is provided with a starboard machine 3 instead of the starboard machine 52. The speed increaser 16 and the reverse turbine 5 arranged on the starboard side are omitted from those in the sixth embodiment described above. 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 (one of the 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 outputs (the port side). 12) is rotated, and the propeller of another (star side) is made by the forward high pressure turbine 6 and the forward medium pressure turbine 7 (or the 8000 KW reverse turbine 5) with an output meter of 20,000 KW. (12) is rotated. 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 the propeller 12 of one (port side), the drive output of the one (port side) of the propeller 12 can be further improved. Can be.

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. Since 17 is connected so that an electrical exchange is possible with each other, 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 exchange of electric power of the shaft generators of the starboard port and the portboard port, the rotational speed of the right and left propellers is changed to It can also be expected to have a secondary function of the steering gear that changes the direction of movement of the line.

In addition, since the increase speed 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, since the speed increaser 16 and the reverse turbine 5 may not be required, the number of parts can be reduced, the manufacturing cost can be reduced, and the weight can be reduced.

In addition, by reducing the number of parts, the maintenance cost required for maintenance inspection (disassembly and assembly) can be reduced, and the working time required for maintenance inspection can be shortened. It is possible to reduce the maintenance space.

An eighth embodiment of a steam turbine ship according to the present invention will be described with reference to FIG. 8. In the steam turbine ship 81 according to the present embodiment, instead of the starboard machine 52, the starboard machine 3 is provided, and instead of the reverse turbine 5 arranged on the starboard side, an auxiliary turbine ( 62) is provided, which is different from the sixth embodiment described above. Since the other components are the same as those in 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) by the forward low pressure turbine 4 (or the 8000 KW reverse turbine 5) of 20,000 KW of output, for example. ) Is rotated, and another (starboard side) propeller (by the forward side high pressure turbine 6 and forward medium pressure turbine 7 (or 8000 KW reverse turbine 5)) 12) is rotated. 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, in the port 2 which rotates one propeller 12 and the starboard 3 which rotates another propeller 12, the auxiliary turbine 62 is respectively provided. Since it is connected, the drive output of each propeller 12 can be improved further. In addition, the shaft generator 17 is connected to the intermediate shaft connected to one propeller 12 and the intermediate shaft connected to another propeller 12, and these shaft generators ( Since 17) is connected to each other to be electrically connected to each other, the rotation speed of each propeller 12 can be easily synchronized. By controlling the output of the left and right auxiliary turbines, the rotational speed of the port is relatively increased or decreased, or the power exchange of the shaft generators of the starboard and port is controlled, thereby changing the rotational speed of the propellers on the left and right, It can also be expected to have a secondary function of the steering gear which changes the direction of travel of the steam turbine ship.

A ninth embodiment of a steam turbine ship according to the present invention will be described with reference to FIG. 9.

As shown in FIG. 9, the steam turbine 91 which concerns on this embodiment uses port port (2nd propulsion turbine) 92 and starboard machine (1st propulsion turbine) 93 as 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, respectively. have. Further, the forward low pressure turbine 4, the forward high pressure turbine 6, and the forward medium pressure turbine 7 constitute one (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), for forward movement. The superheated steam heated above the saturation temperature flows into the high-pressure turbine 6 and the reverse turbine 5 by a superheater of a main boiler not shown, and the steam passed through the high-pressure turbine 6 for forward flows. In order to flow into the reheater (not shown), the steam passing through the reverse turbine (5) flows into the main condenser (M / C) (not shown).

Further, the steam passing through the reheater flows into the forward medium pressure turbine 7, and the steam passing through the forward medium pressure turbine 7 flows into the low pressure turbine 4 for the forward and the low pressure turbine for the forward ( The steam passing through 4) flows into the main condenser not shown. The steam flowing 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 inside the nozzle (not shown) during the flow. The thermal energy is converted into kinetic energy, becoming steam of high velocity flow. This high speed steam acts on a turbine blade (not shown) to rotate the turbine rotor. Rotation of the turbine rotor is decelerated in the first stage reducer 8 and the second stage reducer 9 to rotate the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. It is transmitted to the port side propeller 12 via it. The thrust of the port-side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.

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. (Or 8000 KW reverse turbine 5), one propeller 12 is rotated, the forward low pressure turbine 4 of 20,000 KW, the high pressure turbine 6 for forward, And the other propeller 12 is rotated by the turbine (or the 8000 KW reverse turbine 5) provided with the forward medium pressure turbine 7. 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.

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. Since 17 is connected so that an electrical exchange is possible with each other, the rotation speed of each propeller 12 can be easily synchronized. By controlling the power exchange of the shaft generators of the starboard and port machines, it is also possible to change the number of revolutions of the propellers on the left and right side and to have the auxiliary function of the steering gear which changes the traveling direction of the steam turbine ship.

In addition, the porter 92 which rotates one propeller 12 and the starboard 93 which rotates another propeller 12 can be controlled independently, respectively. Therefore, controllability can be improved.

In addition, this invention is not limited to embodiment mentioned above, It can implement suitably combining above-mentioned embodiment as needed suitably, In addition, it deforms and implements each embodiment within the range which does not deviate from the technical idea of this invention. It can also be changed.

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 schematic plan view of the main parts of 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 schematic plan view of the main parts of a fourth embodiment of a steam turbine according to the present invention;

Fig. 5 is a schematic plan view showing the main parts of a fifth embodiment of a steam turbine according to the present invention;

FIG. 6 is a schematic plan view showing the main parts of a sixth embodiment of a steam turbine according to the present invention; FIG.

FIG. 7 is a schematic plan view showing the main parts of a seventh embodiment of a steam turbine according to the present invention; FIG.

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

9 is a schematic plan view of the main 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 machine (first propulsion turbine) 4: forward low pressure turbine

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 Heavy Gear (Gear) 53b: Third Heavy Gear (Gear)

53c: Third heavy gear (gear) 53d: Third heavy 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: Woo Hyun Ki (1st propulsion turbine)

Claims (15)

The first propulsion turbine having the forward high pressure turbine, the forward medium pressure turbine and the reverse turbine arranged on one axis, and the second propulsion turbine having the forward low pressure turbine and the reverse turbine arranged on one axis along the line width direction. And a first propeller is rotated by the first propulsion turbine, and a second propeller is rotated 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 these shaft generators are connected to each other so as to be electrically connected to 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, Generators are 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 having a forward low pressure turbine and a reverse turbine arranged on one axis are arranged along the line width direction, and the first propulsion is performed. The first propeller is rotated by the turbine for use, and the second propeller is rotated 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 turbine. The second propulsion turbine disposed on the one axis is arranged along the line width direction, and the first propeller is rotated by the first propulsion turbine, and the second propeller is rotated by the second propulsion turbine. Characterized in that 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, and 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 each other so as to be electrically connected to 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.

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