JP5030710B2 - Steam turbine ship - Google Patents

Description

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

As a marine steam turbine that rotates a propeller of a marine vessel, a marine steam turbine that includes a high-pressure turbine and a low-pressure turbine is known (for example, Patent Document 1).
JP 2006-17007 A

  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 ship width direction (arranged at different locations along the ship width direction), and these A marine steam turbine including a high-pressure turbine and a low-pressure turbine is configured to rotate one propeller through a reduction gear. Therefore, when it is going to make a steam turbine ship biaxial, two high-pressure turbines and two low-pressure turbines are required respectively, and these high-pressure turbines and It was difficult to install all the low-pressure turbines, and it was difficult to make the steam turbine ship biaxial.

  This invention is made | formed in view of said situation, and it aims at providing the steam turbine ship provided with two propellers.

The present invention employs the following means in order to solve the above problems.
The steam turbine ship according to the present invention includes a first propulsion turbine in which a forward high-pressure turbine, a forward intermediate-pressure turbine, and a reverse turbine are arranged on one axis, and a forward low-pressure turbine and a reverse turbine on one axis. And a second propulsion turbine disposed along the ship width direction, and the first propeller is rotated by the first propulsion turbine, and the second propulsion turbine rotates the first propeller. Two propellers are configured to rotate , shaft generators are connected to the first propulsion turbine and the second propulsion turbine, respectively, and these shaft generators are They are connected so that they can communicate with each other .

According to the steam turbine ship of the present invention, two propellers are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship provided with two propellers is realizable.
In general, a steam turbine has a characteristic that the high-pressure part mainly works at low load, and the rate of work in the low-pressure part increases as the load increases. Since an output deviation occurs between the first propulsion turbine and the second propulsion turbine, in this type of turbine arrangement, it is necessary to add a structure for complementing the output deviation between the two. In addition, it can be expected to provide an auxiliary function of the steering wheel that changes the traveling direction of the steam turbine ship by changing the rotational speed of the left and right propellers using a structure for complementing the output deviation.
In addition, according to such a steam turbine ship, the output of the overload side propulsion turbine is recovered as electric power by the shaft generator, and this electric power is supplied to the shaft generator on the insufficient side to be converted into power. Thus, the rotation speed of each propeller can be easily synchronized.
Furthermore, by controlling the power recovery and power supply amount of the left and right shaft generators, it is possible to change the number of rotations of the left and right propellers and to provide an auxiliary function for the rudder that changes the traveling direction of the steam turbine ship. I can expect.

The steam turbine ship according to the present invention includes a first propulsion turbine in which a forward high-pressure turbine, a forward intermediate-pressure turbine, and a reverse turbine are arranged on one axis, and a forward low-pressure turbine and a reverse turbine on one axis. And a second propulsion turbine disposed along the ship width direction, and the first propeller is rotated by the first propulsion turbine, and the second propulsion turbine rotates the first propeller. Two propellers are configured to rotate, and a shaft generator is connected to each of the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller. And these shaft generators are connected so that it can mutually communicate electrically .

According to the steam turbine ship of the present invention, two propellers are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship provided with two propellers is realizable.
In general, a steam turbine has a characteristic that the high-pressure part mainly works at low load, and the rate of work in the low-pressure part increases as the load increases. Since an output deviation occurs between the first propulsion turbine and the second propulsion turbine, in this type of turbine arrangement, it is necessary to add a structure for complementing the output deviation between the two. In addition, it can be expected to provide an auxiliary function of the steering wheel that changes the traveling direction of the steam turbine ship by changing the rotational speed of the left and right propellers using a structure for complementing the output deviation.
In addition, according to such a steam turbine ship, each shaft generator is directly attached to the intermediate shaft, for example, without using a speed increaser or the like. The installation space in the engine room can be reduced.
Furthermore, by eliminating the need for gearboxes, etc., the number of parts can be reduced, maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, and the work time required for maintenance inspection can be reduced. It can be shortened, and the maintenance space required for maintenance inspection can be reduced.

The steam turbine ship according to the present invention includes a first propulsion turbine in which a forward high-pressure turbine, a forward intermediate-pressure turbine, and a reverse turbine are arranged on one axis, and a forward low-pressure turbine and a reverse turbine on one axis. And a second propulsion turbine disposed along the ship width direction, and the first propeller is rotated by the first propulsion turbine, and the second propulsion turbine rotates the first propeller. 2 propellers are configured to be rotated , and a generator is connected to the first propulsion turbine, and an electric motor is connected to the second propulsion turbine. The electric motor is electrically connected .

According to the steam turbine ship of the present invention, two propellers are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship provided with two propellers is realizable.
In general, a steam turbine has a characteristic that the high-pressure part mainly works at low load, and the rate of work in the low-pressure part increases as the load increases. Since an output deviation occurs between the first propulsion turbine and the second propulsion turbine, in this type of turbine arrangement, it is necessary to add a structure for complementing the output deviation between the two. In addition, it can be expected to provide an auxiliary function of the steering wheel that changes the traveling direction of the steam turbine ship by changing the rotational speed of the left and right propellers using a structure for complementing the output deviation.
Further, according to such a steam turbine ship, the power of the first propulsion turbine, which is relatively excessive in output at the time of low load, is recovered as electric power by the generator, and the output is relatively insufficient at low load. The first propeller and the second propeller rotation speed are easily synchronized by supplying the electric power connected to the electric motor connected to the turbine 2 and converting it into power.
By controlling the power recovery amount of the generator of the first propulsion turbine and the power supply amount to the electric motor of the second propulsion turbine, the rotational speed of the left and right propellers is changed, and the traveling direction of the steam turbine ship is changed. It can also be expected to have an auxiliary function of the changing rudder.
Furthermore, the manufacturing cost can be further reduced by adopting a relatively inexpensive generator and motor instead of an expensive shaft generator.

  In the steam turbine ship, it is more preferable that an auxiliary turbine is connected to the second propulsion turbine.

  According to such a steam turbine ship, since the auxiliary turbine is connected to the second propulsion turbine, the load ratio of the second propulsion turbine is the first propulsion turbine at the time of engine low output. In the case where it is low, the driving output of the second propeller can be supplemented by operating the auxiliary turbine, and the first propeller and the second propeller can be synchronized. In addition, by controlling the output of the auxiliary turbine to relatively increase or decrease the rotation speed of the second propeller relative to the first propeller, the auxiliary function of the rudder that changes the traveling direction of the steam turbine ship may be provided. I can expect.

  In the steam turbine ship, it is more preferable that an auxiliary turbine is connected to each of the first propulsion turbine and the second propulsion turbine.

According to such a steam turbine ship, the output difference between the first propulsion turbine and the second propulsion turbine is adjusted by adjusting the output of the auxiliary turbine connected to each of the first propulsion turbine and the first propulsion turbine. The rotation of the propeller and the second propeller can be synchronized.
By controlling the auxiliary turbine output of the first propulsion turbine and the auxiliary turbine output of the second propulsion turbine, the rotational speed of the left and right propellers is changed to change the traveling direction of the steam turbine ship. It can also be expected to have functions.

The steam turbine ship according to the present invention includes a first propulsion turbine constituted only by a forward high-pressure turbine and a forward intermediate-pressure turbine, and a second propulsion low-pressure turbine and a reverse turbine arranged on one axis. A propulsion turbine is disposed along the ship width direction, and the first propeller is rotated by the first propulsion turbine, and the second propeller is rotated by the second propulsion turbine. A shaft generator is connected to each of the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller. The shaft generator Are connected so that they can communicate with each other .

According to the steam turbine ship of the present invention, two propellers are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship provided with two propellers is realizable.
Further, since the first propulsion turbine is only the high-pressure turbine and the intermediate-pressure turbine, the shaft length can be shortened, and the main engine design becomes easy.
Even in this configuration, the characteristics of the steam turbine are such that the high pressure section mainly works at low loads and the rate of work in the low pressure section increases as the load increases. It is necessary to add a structure for compensating for the output deviation between the first propulsion turbine and the second propulsion turbine due to the change.
In addition, according to such a steam turbine ship, each shaft generator is directly attached to the intermediate shaft, for example, without using a speed increaser or the like. The installation space in the engine room can be reduced.
Furthermore, by eliminating the need for gearboxes, etc., the number of parts can be reduced, maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, and the work time required for maintenance inspection can be reduced. It can be shortened, and the maintenance space required for maintenance inspection can be reduced.

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

According to such a steam turbine ship, there is no need to dispose the reverse turbine on the same axis as the first propulsion turbine, and the axial length of the first propulsion turbine can be reduced. The installation space in can be further reduced.
Further, since the auxiliary turbine is connected to the second propulsion turbine, the second propeller is operated by operating the auxiliary turbine when the engine output is low and the output ratio of the second propulsion turbine is low. Thus, the first propeller and the second propeller can be synchronized. By controlling the output of the auxiliary turbine to relatively increase or decrease the rotational speed of the second propeller relative to the first propeller, it can be expected to have an auxiliary function of the rudder that changes the traveling direction of the steam turbine ship. .

A steam turbine ship according to the present invention includes a first propulsion turbine in which a forward high pressure turbine, a forward intermediate pressure turbine, a forward low pressure turbine, and a reverse turbine are arranged on one axis, a forward high pressure turbine, and a forward A middle propulsion turbine, a forward low-pressure turbine, and a second propulsion turbine in which a reverse turbine is arranged on one axis are arranged along a ship width direction, and are arranged by the first propulsion turbine. The first propeller is rotated, and the second propeller is rotated by the second propulsion turbine. An intermediate shaft connected to the first propeller, and the second propeller A shaft generator is connected to each of the coupled intermediate shafts, and these shaft generators are connected so that they can be electrically exchanged with each other .

According to the steam turbine ship of the present invention, two propellers are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship provided with two propellers is realizable.
Further, 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.
Controlling the output of the first propulsion turbine and the output of the second propulsion turbine to change the rotation speed of the left and right propellers and to provide the auxiliary function of the rudder that changes the traveling direction of the steam turbine ship Can also be expected.
In addition, according to such a steam turbine ship, each shaft generator is directly attached to the intermediate shaft, for example, without using a speed increaser or the like. The installation space in the engine room can be reduced.
Furthermore, by eliminating the need for gearboxes, etc., the number of parts can be reduced, maintenance costs required for maintenance inspection (disassembly and assembly) can be reduced, and the work time required for maintenance inspection can be reduced. It can be shortened, and the maintenance space required for maintenance inspection can be reduced.

  In the steam turbine ship, it is more preferable that the forward intermediate 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 ship and thus the operating cost can be reduced.

  The steam turbine ship according to the present invention has the effect of being biaxial.

Hereinafter, a first embodiment of a steam turbine ship according to the present invention will be described with reference to FIG.
FIG. 1 is a schematic plan view of a main part of a steam turbine ship according to the present embodiment.

As shown in FIG. 1, the steam turbine ship 1 according to the present embodiment includes a port machine (second propulsion turbine) 2 and a starboard machine (first propulsion turbine) 3 as main elements. Yes.
The port machine 2 includes a forward low pressure turbine 4 and a reverse turbine 5, and the starboard machine 3 includes a forward high pressure turbine 6, a forward intermediate pressure turbine 7, and a reverse turbine 5. Further, the forward low-pressure turbine 4, the forward high-pressure turbine 6, and the forward intermediate-pressure turbine 7 constitute one (one) main engine (main engine).

The forward low-pressure turbine 4 and the reverse turbine 5 are connected via a single turbine rotor (not shown). The forward low-pressure turbine 4 includes steam that has passed through the forward intermediate-pressure turbine 7. And the steam that has passed through the reverse turbine 5 of the starboard 3 flows into the reverse turbine 5. The steam flowing into the forward low-pressure turbine 4 and the reverse turbine 5 flows in the nozzle (not shown), and the thermal energy held therein is converted into kinetic energy to become high-speed steam. This fast-flowing steam acts on turbine blades (not shown) to turn the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage speed reducer 8 and the second stage speed reducer 9, and a port side propeller is connected via a thrust shaft (not shown), an intermediate shaft (not shown), and the propeller shaft 11. (First propeller) 12 is transmitted. The thrust of the port side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.
The steam that has passed 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 a first small gear 8a that is an element of the first stage speed reducer 8 via a connecting shaft 13 (or a coupling or a joint (not shown)), and the turbine rotor, the connecting shaft 13, And the 1st small gear 8a rotates integrally in the same direction. Further, the first small gear 8 a meshes with (engages with) the first large gear 8 b that is one element of the first stage reduction gear 8.
The first large gear 8b is connected to the second small gear 9a, which is an element of the second speed reducer 9, via the connecting shaft 14, and the first large gear 8b, the connecting shaft 14, and the second small gear. 9a is configured to rotate integrally in the same direction. Further, the second small gear 9 a is engaged (engaged) with a second large gear 9 b that is an element of the second stage reduction gear 9.

The second large gear 9b is connected to a thrust shaft (not shown), and the second large gear 9b, the thrust shaft (not shown), the intermediate shaft, the propeller shaft 11, and the propeller 12 are integrated in the same direction. It is designed to rotate. Further, the second large gear 9b is also engaged (engaged) with the second small gear 9c.
The second small gear 9c is connected to a first large gear 16a, which is an element of the speed increaser 16, via a connecting shaft 15, and the second small gear 9c, the connecting shaft 15, and the first large gear 16a are connected to each other. , And rotate integrally in the same direction. Further, the first large gear 16 a meshes with (engages with) the first small gear 16 b that is one element of the speed increaser 16.
The first small gear 16b is connected to a shaft generator (Shaft) via a coupling or a joint (not shown).
Generator: SG) 17 is connected to a rotation shaft 17a, and the first small gear 16b and the rotation shaft 17a rotate integrally in the same direction.
The shaft generator 17 functions as a generator that generates power by rotating the rotating shaft 17a, and generates power from a separately prepared power generator (for example, a main generator or a shaft generator installed in the ship). In this embodiment, as shown by a broken line arrow in FIG. 1, another shaft disposed on the starboard side is a device having a function as an electric motor (a biasing motor) that rotates the rotating shaft 17a upon receiving the supply. The generator 17 is connected so that it can be electrically exchanged.

The forward high pressure turbine 6, the forward intermediate pressure turbine 7, and the reverse turbine 5 are connected via a single turbine rotor (not shown), and are connected to the forward high pressure turbine 6 or the reverse turbine 5. The superheated steam heated to the saturation temperature or higher by a superheater of a boiler (not shown) flows in, and the intermediate pressure turbine 7 is heated to the saturation temperature or higher by a reheater (not shown). Superheated steam flows in. The steam flowing into the forward high-pressure turbine 6, the forward intermediate-pressure turbine 7, and the reverse turbine 5 flows in the nozzle (not shown), and the thermal energy held therein is converted into kinetic energy, so It becomes steam. This fast-flowing steam acts on turbine blades (not shown) to turn the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage speed reducer 8 and the second stage speed reducer 9, and the starboard side propeller is passed through the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. (Second propeller) 12 is transmitted. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.
Note that the steam that has passed through the forward high-pressure turbine 6 returns to the reheater and is heated.

The turbine rotor is connected to a first small gear 8a that is an element of the first stage speed reducer 8 via a connecting shaft 13 (or a coupling or a joint (not shown)), and the turbine rotor, the connecting shaft 13, And the 1st small gear 8a rotates integrally in the same direction. Further, the first small gear 8 a meshes with (engages with) the first large gear 8 b that is one element of the first stage reduction gear 8.
The first large gear 8b is connected to the second small gear 9a, which is an element of the second speed reducer 9, via the connecting shaft 14, and the first large gear 8b, the connecting shaft 14, and the second small gear. 9a is configured to rotate integrally in the same direction. Further, the second small gear 9 a is engaged (engaged) with a second large gear 9 b that is an element of the second stage reduction gear 9.

The second large gear 9b is connected to a thrust shaft (not shown), and the second large gear 9b, the thrust shaft (not shown), the intermediate shaft (not shown), the propeller shaft 11, and the propeller 12 are , And rotate integrally in the same direction. Further, the second large gear 9b is also engaged (engaged) with the second small gear 9c.
The second small gear 9c is connected to a first large gear 16a, which is an element of the speed increaser 16, via a connecting shaft 15, and the second small gear 9c, the connecting shaft 15, and the first large gear 16a are connected to each other. , And rotate integrally in the same direction. Further, the first large gear 16 a meshes with (engages with) the first small gear 16 b that is one element of the speed increaser 16.
The first small gear 16b is connected to a shaft generator (Shaft) via a coupling or a joint (not shown).
Generator: SG) 17 is connected to a rotation shaft 17a, and the first small gear 16b and the rotation shaft 17a rotate integrally in the same direction.
The shaft generator 17 functions as a generator that generates power by rotating the rotating shaft 17a, and generates power from a separately prepared power generator (for example, a main generator or a shaft generator installed in the ship). In this embodiment, as shown by a broken line arrow in FIG. 1, another shaft arranged on the port side is a device having a function as an electric motor (a biasing motor) that rotates the rotating shaft 17 a upon receiving the supply. The generator 17 is connected so that it can be electrically exchanged.

According to the steam turbine ship 1 according to the present embodiment, for example, one (port side) propeller 12 is rotated by the forward low pressure turbine 4 (or 8,000 kilowatt reverse turbine 5) having an output of 20,000 kilowatts. The propeller 12 on the other side (starboard side) is rotated by the forward high-pressure turbine 6 and the forward intermediate-pressure turbine 7 (or 8000 kilowatt backward turbine 5) having a total output of 20,000 kilowatts. That is, the two propellers 12 are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship 1 provided with two propellers is realizable.
A shaft generator 17 is connected to the port machine 2 that rotates one (port side) propeller 12 and the star machine 3 that rotates the other (star side) propeller 12, respectively, and These shaft generators 17 are connected so that they can be electrically exchanged with 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 star generator and the star generator shaft generator, the rotation speed of the left and right propellers is changed, and the auxiliary function of the steering wheel that changes the traveling direction of the steam turbine ship is provided. I can also expect that.

A second embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 21 according to the present embodiment differs from that of the first embodiment described above in that the shaft generator 17 is directly attached to an intermediate shaft (not shown) without the speed increaser 16 being interposed. . Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.

  The shaft generator 17 functions as a generator that generates power by rotating the intermediate shaft, and supplies power from a separately prepared power generator (for example, a main generator or a shaft generator installed in the ship). In this embodiment, as shown by a broken line arrow in FIG. 2, another shaft generator 17 disposed on the opposite side of the shaft is a device having a function as an electric motor (heating motor) that receives and rotates the intermediate shaft. It is connected so that it can be electrically exchanged.

According to the steam turbine ship 21 according to the present embodiment, since the shaft generator 17 is directly attached to the intermediate shaft without the speed increaser 16, the speed increaser 16 can be eliminated, and the engine The installation space in the room can be reduced.
In addition, since the speed increaser 16 can be omitted, the number of parts in the reduction gear can be reduced, the manufacturing cost can be reduced, and the weight can be reduced.
Furthermore, by reducing the number of parts, the maintenance cost required for maintenance inspection (disassembly and assembly) can be reduced, the work time required for maintenance inspection can be shortened, and the maintenance required for maintenance inspection can be reduced. Space can be reduced.
Other functions and effects are the same as those of the above-described first embodiment, and thus description thereof is omitted here.

A third embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 31 according to the present embodiment is provided with an electric motor (boost motor) 32 instead of the shaft generator 17 attached to the port side intermediate shaft, and the shaft generator attached to the starboard side intermediate shaft. It differs from the thing of 2nd Embodiment mentioned above by the point that the generator 33 is provided instead of 17. FIG. Since other components are the same as those of the second embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 2nd Embodiment mentioned above.

The electric motor 32 is a drive device that is configured to rotate the rotating shaft 32a upon receiving electric power from the generator 33. The rotating shaft 32a is a second-stage speed reducer via a coupling or a joint (not shown). 9 and the second small gear 9a, the rotary shaft 32a, the second small gear 9a, the connecting shaft 14 and the first large gear 8b of the first stage reduction gear 8 rotate integrally in the same direction. It is like that.
The generator 33 is a power generation device that generates electric power by rotating 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 broken line arrows in FIG. It has come to be. The rotating shaft 33a is connected to the second small gear 9a of the second stage speed reducer 9 through a coupling or a joint (not shown), and the rotating shaft 33a, the second small gear 9a, the connecting shaft 14, and the second rotating gear 9a. The first large gear 8b of the first speed reducer 8 is integrally rotated in the same direction.

According to the steam turbine ship 31 according to the present embodiment, it is not necessary to attach the relatively large and expensive shaft generator 17 to the intermediate shaft, so that the installation space in the engine room can be reduced, and the manufacturing cost is further increased. Reduction can be achieved.
Further, as a characteristic at low load, the starboard output indicated by the forward high-pressure turbine 6 and the forward intermediate pressure turbine 7 is larger than the output of the portside aircraft indicated by the forward low-pressure turbine 4. The propeller 12 can be synchronized by distributing a part of the output generated by the machine to the port machine.
By controlling the power recovery amount of the starboard generator and the power supply amount of the starboard motor, the auxiliary function of the rudder that changes the traveling direction of the steam turbine ship by changing the rotation speed of the left and right propellers We can expect to have it.
Other functions and effects are the same as those of the second embodiment described above, and thus the description thereof is omitted here.

A first reference embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 41 according to the present embodiment is different from that of the third embodiment described above in that a generator 33 is provided instead of the electric motor 32. Since other components are the same as those of the third embodiment described above, 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 according to the present embodiment, the rotation speed of the port machine 2 and the rotation speed of the starboard machine 3 are synchronized (taken) by adjusting the load of each generator 33. Therefore, all the electric power generated in each generator 33 can be consumed (utilized) as driving power for auxiliary equipment installed in the engine room or inboard power for inboard lighting, etc. The output of the device (for example, main generator, sub-generator, etc.) can be reduced accordingly.
By controlling the power recovery amount of the starboard generator and the power recovery amount of the starboard generator, the auxiliary function of the rudder to change the traveling direction of the steam turbine ship by changing the rotation speed of the left and right propellers We can expect to have it.
Other functions and effects are the same as those of the above-described third embodiment, and a description thereof is omitted here.

A second reference embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 51 according to the present embodiment is provided with a starboard (first propulsion turbine) 52 instead of the starboard 3, and the second stage reducers 9 pass through the third stage reducer 53. Are different from those of the first reference embodiment described above in that they are connected (coupled). Since other components are the same as those of the first reference embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st reference embodiment mentioned above.

The starboard machine 52 includes a forward high pressure turbine 6 and a forward intermediate pressure turbine 7.
The forward high pressure turbine 6 and the forward intermediate pressure turbine 7 are connected via a single turbine rotor (not shown), and the forward high pressure turbine 6 includes a boiler (not shown). The superheated steam heated to the saturation temperature or more by the superheater flows, and the superheated steam heated to the saturation temperature or more by a reheater (not shown) flows into the forward intermediate pressure turbine 7. Yes. The steam flowing into the forward high-pressure turbine 6 and the forward intermediate-pressure turbine 7 is converted into kinetic energy while flowing in a nozzle (not shown), and becomes high-speed flowing steam. This fast-flowing steam acts on turbine blades (not shown) to turn the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage speed reducer 8 and the second stage speed reducer 9, and the starboard side propeller is passed through the thrust shaft (not shown), the intermediate shaft (not shown), and the propeller shaft 11. 12 is transmitted. The thrust of the starboard side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.
Note that superheated steam heated to a saturation temperature or higher by a superheater of a boiler (not shown) flows into the reverse turbine 5 of the port machine 2.

The second small gear 9a is connected to a third intermediate gear 53a, which is an element of the third stage speed reducer 53, via a connecting shaft 54. The second small gear 9a, the connecting shaft 14, the first stage speed reducer. The first first large gear 8b, the connecting shaft 54, and the third middle gear (gear) 53a are integrally rotated in the same direction. Further, the third intermediate gear 53 a is engaged (engaged) with a third intermediate gear (gear) 53 b that is an element of the third stage reduction gear 53.
The third middle gear 53b is connected to the rotating shaft 33a of the generator 33 via a coupling or a joint (not shown), and the third middle gear 53b and the rotating shaft 33a are integrally rotated in the same direction. It has become. Further, the third intermediate gear 53 b is engaged (engaged) with a third intermediate gear (gear) 53 c that is an element of the third stage reduction gear 53.
The third intermediate gear 53c is engaged with (engaged with) a third intermediate gear (gear) 53d that is an element of the third stage reduction gear 53.
The third intermediate gear 53d is connected to the second small gear 9a, which is an element of the second stage reduction gear 9 disposed on the port side via the connecting shaft 55, and the third intermediate gear 53d and the connecting shaft 55 are connected. The second small gear 9a, the connecting shaft 14, and the first large gear 8b of the first speed reducer 8 are integrally rotated in the same direction.

According to the steam turbine ship 51 according to the present embodiment, since it is not necessary to arrange the reverse turbine 5 on the same axis as the starboard machine 52, the axial length of the starboard machine 52 can be reduced, Installation space can be further reduced.
Further, according to the steam turbine ship 51 according to the present embodiment, the rotation speed of the port side machine 2 and the speed of the starboard machine 52 are always synchronized (adjusted) by the third stage reduction gear 53. Therefore, all the electric power generated in the generator 33 can be consumed (utilized) as driving power for auxiliary equipment installed in the engine room or in-board power source such as in-board lighting. For example, the output of the main generator, sub-generator, etc.) can be reduced accordingly.
Other functions and effects are the same as those of the first reference embodiment described above, and a description thereof is omitted here.

A fourth embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 61 according to the present embodiment is provided with a starboard machine 52 instead of the starboard machine 3, and with an auxiliary turbine (heating turbine) 62 instead of the shaft generator 17 arranged on the port side. In addition, instead of the shaft generator 17 arranged on the starboard side, the reverse turbine 5 is provided and the shaft generator 17 is attached to each intermediate shaft of the first embodiment described above. Different from the one. Since other components are the same as those of the first embodiment described above, description of these components is omitted here.
In addition, the same code | symbol is attached | subjected to the member same as 1st Embodiment mentioned above.

Auxiliary turbine (for example, a turbine having an output of 3,000 kilowatts) 62 arranged on the port side is configured so that a turbine rotor (not shown) is rotated by supply of steam from a reheater (not shown). The turbine rotor is connected to a first small gear 16b, which is an element of the speed increaser 16, via a connecting shaft 63 (or a coupling or a joint (not shown)), and the turbine rotor The connecting shaft 63 and the first small gear 16b rotate integrally in the same direction. Superheated steam heated to the saturation temperature or higher by the reheater flows into the auxiliary turbine 62. While the steam that has flowed into the auxiliary turbine 62 is flowing in a nozzle (not shown), the thermal energy that it holds is converted into kinetic energy, and becomes high-speed flowing steam. This fast-flowing steam acts on turbine blades (not shown) to turn the turbine rotor. The rotation of the turbine rotor is increased by the speed increaser 16, and then decelerated by the second stage speed reducer 9, via a thrust shaft (not shown), an intermediate shaft (not shown), and the propeller shaft 11. Is transmitted to the port side propeller 12. The thrust of the port side propeller 12 is transmitted from the thrust bearing 10 to the hull to propel the ship.
The steam that has passed 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 a first small gear 16b, which is an element of the speed increaser 16, via a connecting shaft 64 (or a coupling or a joint (not shown)). The rotor, the connecting shaft 64, and the first small gear 16b rotate integrally in the same direction.
In addition, superheated steam heated to a saturation temperature or higher by a superheater of a boiler (not shown) flows into the reverse turbine 5 arranged on the port side and the reverse turbine 5 arranged on the starboard side, respectively. Each of the steam that has passed through the reverse turbine 5 flows into a main condenser (not shown).

According to the steam turbine ship 61 according to the present embodiment, for example, one (port side) propeller 12 is rotated by the forward low pressure turbine 4 (or 8,000 kilowatt reverse turbine 5) having an output of 20,000 kilowatts. The propeller 12 on the other side (starboard side) is rotated by the forward high-pressure turbine 6 and the forward intermediate-pressure turbine 7 (or 8000 kilowatt backward turbine 5) having a total output of 20,000 kilowatts. That is, the two propellers 12 are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship 61 provided with two propellers is realizable.
Further, since the auxiliary turbine 62 is connected to the port machine 2 that rotates one (port side) propeller 12, the drive output of one (port side) propeller 12 can be further improved.
Furthermore, a shaft generator 17 is connected to the intermediate shaft connected to one (starboard side) propeller 12 and the intermediate shaft connected to the other (starboard side) propeller 12, respectively. These shaft generators 17 are connected so that they can be electrically exchanged with each other, so that the rotation speeds of the propellers 12 can be easily synchronized.
By controlling the output of the auxiliary turbine to increase or decrease the speed of the port machine relative to the starboard, or by controlling the exchange of power between the star generators of the starboard and port machines, the rotation speed of the left and right propellers It can also be expected to have an auxiliary function of the rudder that changes the traveling direction of the steam turbine ship.
Furthermore, since it is not necessary to arrange the reverse turbine 5 on the same axis as the starboard machine 52, the axial length of the starboard machine 52 can be reduced, and the installation space in the engine room can be further reduced.

A fifth embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
In the steam turbine ship 71 according to the present embodiment, the starboard 3 is provided instead of the starboard 52, and the speed increaser 16 and the reverse turbine 5 arranged on the starboard side are omitted. It differs from that of the fourth embodiment. Since other components are the same as those of the fourth embodiment described above, 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.

According to the steam turbine ship 71 according to the present embodiment, for example, one (port side) propeller 12 is rotated by the forward low pressure turbine 4 (or 8,000 kilowatt reverse turbine 5) having an output of 20,000 kilowatts. The propeller 12 on the other side (starboard side) is rotated by the forward high-pressure turbine 6 and the forward intermediate-pressure turbine 7 (or 8000 kilowatt backward turbine 5) having a total output of 20,000 kilowatts. That is, the two propellers 12 are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship 71 provided with two propellers is realizable.
Further, since the auxiliary turbine 62 is connected to the port machine 2 that rotates one (port side) propeller 12, the drive output of one (port side) propeller 12 can be further improved.
Furthermore, a shaft generator 17 is connected to the intermediate shaft connected to one (starboard side) propeller 12 and the intermediate shaft connected to the other (starboard side) propeller 12, respectively. These shaft generators 17 are connected so that they can be electrically exchanged with each other, so that the rotation speeds of the propellers 12 can be easily synchronized.
By controlling the output of the auxiliary turbine to increase or decrease the speed of the port machine relative to the starboard, or by controlling the exchange of power between the star generators of the starboard and port machines, the rotation speed of the left and right propellers It can also be expected to have an auxiliary function of the rudder that changes the traveling direction of the steam turbine ship.

Furthermore, since the speed-up gear 16 and the reverse turbine 5 arranged on the starboard side can be eliminated, the installation space in the engine room can be reduced.
Further, since the speed increaser 16 and the reverse turbine 5 can be eliminated, the number of parts can be reduced, the manufacturing cost can be reduced, and the weight can be reduced.
Furthermore, by reducing the number of parts, the maintenance cost required for maintenance inspection (disassembly and assembly) can be reduced, the work time required for maintenance inspection can be shortened, and the maintenance required for maintenance inspection can be reduced. Space can be reduced.

A sixth embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
The steam turbine ship 81 according to the present embodiment is provided with the starboard 3 instead of the starboard 52 and with the auxiliary turbine 62 instead of the reverse turbine 5 disposed on the starboard side. This differs from that of the fourth embodiment described above. Since other components are the same as those of the fourth embodiment described above, 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.

According to the steam turbine ship 81 according to the present embodiment, for example, one (port side) propeller 12 is rotated by the forward low pressure turbine 4 (or 8,000 kilowatt reverse turbine 5) having an output of 20,000 kilowatts. The propeller 12 on the other side (starboard side) is rotated by the forward high-pressure turbine 6 and the forward intermediate-pressure turbine 7 (or 8000 kilowatt backward turbine 5) having a total output of 20,000 kilowatts. That is, the two propellers 12 are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship 81 provided with two propellers is realizable.
Further, since the auxiliary turbine 62 is connected to the port machine 2 that rotates one (port side) propeller 12 and the star machine 3 that rotates the other (star side) propeller 12, respectively, The drive output of the propeller 12 can be further improved.
Furthermore, a shaft generator 17 is connected to the intermediate shaft connected to one (starboard side) propeller 12 and the intermediate shaft connected to the other (starboard side) propeller 12, respectively. These shaft generators 17 are connected so that they can be electrically exchanged with each other, so that the rotation speeds of the propellers 12 can be easily synchronized. By controlling the output of the left and right auxiliary turbines to increase or decrease the rotational speed of the port machine relative to the starboard machine, or by controlling the exchange of power between the starboard and port machine shaft generators, It can also be expected to have an auxiliary function of the rudder that changes the rotational speed and changes the traveling direction of the steam turbine ship.

A seventh embodiment of the steam turbine ship according to the present invention will be described with reference to FIG.
As shown in FIG. 9, the steam turbine ship 91 according to the present embodiment includes a port machine (second propulsion turbine) 92 and a starboard machine (first propulsion turbine) 93 as main elements. Yes.
Each of the port machine 92 and the starboard machine 93 includes the forward low-pressure turbine 4, the reverse turbine 5, the forward high-pressure turbine 6, and the forward intermediate pressure turbine 7. Further, the forward low-pressure turbine 4, the forward high-pressure turbine 6, and the forward intermediate-pressure turbine 7 constitute one (one) main engine (main engine).

  The forward low-pressure turbine 4, the reverse turbine 5, the forward high-pressure turbine 6, and the forward intermediate pressure turbine 7 are connected to each other via a single turbine rotor (not shown). Superheated steam heated to a saturation temperature or higher by a superheater of a boiler (not shown) flows into the high pressure turbine 6 and the reverse turbine 5, and the steam that has passed through the forward high pressure turbine 6 is reheated (not shown). The steam that has passed through the reverse turbine 5 flows into a main condenser (M / C) (not shown). Further, the steam that has passed through the reheater flows into the forward intermediate pressure turbine 7, and the steam that has passed through the forward intermediate pressure turbine 7 flows into the forward low pressure turbine 4 and passes through the forward low pressure turbine 4. The steam thus produced flows into a main condenser (not shown). The steam that has flowed into the forward low pressure turbine 4, the reverse turbine 5, the forward high pressure turbine 6, and the forward intermediate pressure turbine 7 flows in a nozzle (not shown), and the thermal energy held by the steam is converted into kinetic energy. It is converted into high-speed flowing steam. This fast-flowing steam acts on turbine blades (not shown) to turn the turbine rotor. The rotation of the turbine rotor is decelerated in the first stage speed reducer 8 and the second stage speed reducer 9, and a port side propeller is connected via a thrust shaft (not shown), an intermediate shaft (not shown), and the propeller shaft 11. 12 is transmitted. 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 ship 91 according to the present embodiment, for example, a turbine (or 8,000 kilowatts reverse) including a forward low-pressure turbine 4 having a total output of 20,000 kilowatts, a forward high-pressure turbine 6, and a forward intermediate-pressure turbine 7. Turbine (5), one propeller 12 (rotation side) is rotated, and a turbine (or forward pressure low-pressure turbine 4 having a total output of 20,000 kilowatts, forward high-pressure turbine 6 and forward intermediate-pressure turbine 7 (or Another (a starboard side) propeller 12 is rotated by the reverse turbine 5). That is, the two propellers 12 are rotated by two (two sets) turbines arranged side by side in the ship width direction. Thereby, the steam turbine ship 91 provided with two propellers is realizable.
A shaft generator 17 is connected to the intermediate shaft connected to one (starboard side) propeller 12 and the intermediate shaft connected to the other (starboard side) propeller 12, respectively. These shaft generators 17 are connected so that they can be electrically exchanged with each other, so that the rotation speeds of the propellers 12 can be easily synchronized. By controlling the exchange of power between the star generator and the star generator shaft generator, it can be expected to have an auxiliary function of the rudder that changes the traveling direction of the steam turbine ship by changing the rotation speed of the left and right propellers .
Furthermore, the port machine 92 that rotates the propeller 12 on one side (port side) and the star machine 93 that rotates the propeller 12 on the other side (starboard side) can be controlled independently. Can be improved.

  Note that the present invention is not limited to the above-described embodiments, and can be carried out by combining the above-described embodiments as appropriate, and each embodiment can be applied to the technical idea of the present invention. Modifications and changes can be made without departing from the scope.

It is a principal part schematic plan view which shows 1st Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 2nd Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 3rd Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 1st reference embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 2nd reference embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 4th Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 5th Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 6th Embodiment of the steam turbine ship which concerns on this invention. It is a principal part schematic plan view which shows 7th Embodiment of the steam turbine ship which concerns on this invention.

1 Steam turbine ship 2 Port side machine (second propulsion turbine)
3 Starboard (first propulsion turbine)
4 Forward Low Pressure Turbine 5 Backward Turbine 6 Forward High Pressure Turbine 7 Forward Medium Pressure Turbine 12 Propeller 17 Axis 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 middle gear (gear)
53b Third middle gear (gear)
53c Third middle gear (gear)
53d Third medium gear (gear)
61 Steam turbine ship 62 Auxiliary turbine 71 Steam turbine ship 81 Steam turbine ship 91 Steam turbine ship 92 Port side machine (second propulsion turbine)
93 Starboard (first propulsion turbine)

Claims (9)

First propulsion turbine in which forward high-pressure turbine, forward intermediate-pressure turbine, and reverse turbine are arranged on one axis, and second propulsion turbine in which the forward low-pressure turbine and reverse turbine are arranged on one axis A turbine is disposed along the width direction of the ship, and the first propeller is rotated by the first propulsion turbine and the second propeller is rotated by the second propulsion turbine. Configured ,
A shaft generator is connected to each of the first propulsion turbine and the second propulsion turbine, and these shaft generators are connected so that they can be electrically exchanged with each other . A steam turbine ship characterized by First propulsion turbine in which forward high-pressure turbine, forward intermediate-pressure turbine, and reverse turbine are arranged on one axis, and second propulsion turbine in which the forward low-pressure turbine and reverse turbine are arranged on one axis A turbine is disposed along the width direction of the ship, and the first propeller is rotated by the first propulsion turbine and the second propeller is rotated by the second propulsion turbine. Configured ,
A shaft generator is connected to each of the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller, and these shaft generators are in electrical communication with each other. A steam turbine ship characterized by being connected so that First propulsion turbine in which forward high-pressure turbine, forward intermediate-pressure turbine, and reverse turbine are arranged on one axis, and second propulsion turbine in which the forward low-pressure turbine and reverse turbine are arranged on one axis A turbine is disposed along the width direction of the ship, and the first propeller is rotated by the first propulsion turbine and the second propeller is rotated by the second propulsion turbine. Configured ,
A generator is connected to the first propulsion turbine, an electric motor is connected to the second propulsion turbine, and the generator and the electric motor are electrically connected. Steam turbine ship. The steam turbine ship according to any one of claims 1 to 3, wherein an auxiliary turbine is connected to the second propulsion turbine. The steam turbine ship according to any one of claims 1 to 3, wherein an auxiliary turbine is connected to each of the first propulsion turbine and the second propulsion turbine. A first propulsion turbine constituted only by a forward high-pressure turbine and a forward intermediate-pressure turbine, and a second propulsion turbine in which the forward low-pressure turbine and the reverse turbine are arranged on one axis include a ship width direction. And a first propeller is rotated by the first propulsion turbine, and a second propeller is rotated by the second propulsion turbine ,
A shaft generator is connected to each of the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller, and these shaft generators are in electrical communication with each other. A steam turbine ship characterized by being connected so that The steam turbine ship according to claim 6 , wherein a reverse turbine is connected to the first propulsion turbine, and an auxiliary turbine is connected to the second propulsion turbine. A forward high-pressure turbine, a forward intermediate-pressure turbine, a forward low-pressure turbine, and a first propulsion turbine in which a forward turbine is arranged on one axis, a forward high-pressure turbine, a forward intermediate-pressure turbine, and a forward low-pressure turbine , And a second propulsion turbine having a reverse turbine arranged on one axis, are arranged along a ship width direction, and the first propeller is rotated by the first propulsion turbine, The second propeller is configured to be rotated by the second propulsion turbine ;
A shaft generator is connected to each of the intermediate shaft connected to the first propeller and the intermediate shaft connected to the second propeller, and these shaft generators are in electrical communication with each other. A steam turbine ship characterized by being connected so that The steam turbine ship according to any one of claims 1 to 8 , wherein the forward intermediate pressure turbine and the forward low pressure turbine are reheat turbines.

Images