KR20170118220A - Exhaust turbine supercharger, main engine, and marine vessel - Google Patents

Abstract

A compressor 21 and a turbine 22 connected to a coaxial phase in an exhaust turbine supercharger, a cycle and a ship, a motor generator 32 connected to the shaft end of the compressor 21, a stator A space heater 60 for supplying electric current to the windings 66 of the electric generator 32 and heating the electric power generator 62 and a rotation speed sensor 54 for detecting the rotation speed of the motor generator 32, The control device 5 for stopping the space heater 60 when the number of revolutions of one electric motor generator 32 exceeds the predetermined number of revolutions set in advance is provided to suppress the occurrence of condensation in the electric motor generator, To be properly operated.

Description

EXHAUST TURBINE SUPERCHARGER, MAIN ENGINE, AND MARINE VESSEL}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ship having a cycle and a cycle provided with an exhaust turbine supercharger having an electric motor generator and an exhaust turbine supercharger.

For example, an internal combustion engine as a cycle mounted on a ship is equipped with a supercharger for improving fuel economy and reducing CO ₂ in the exhaust gas. This turbocharger drives the turbine and the compressor using the exhaust gas discharged from the internal combustion engine, thereby compressing and supplying the intake air to the internal combustion engine to improve the output of the internal combustion engine. In addition, an exhaust turbine supercharger that rotates the compressor and the turbine by directly driving the motor generator to the rotor shaft of the supercharger and rotates the rotor shaft by the motor generator while generating power to the generator by using surplus energy driven by the compressor .

Such an exhaust turbine supercharger is described in Patent Document 1 and Non-Patent Document 1.

Japanese Laid-Open Patent Publication No. 2013-224672

 Mitsubishi Heavy Industries, Ltd. Vol.49 No.1 (2012) New Product / New Technology Special Feature "Commercialization of Hybrid Supercharger for Large Vessels Generated by Exhaust Gas"

Such an exhaust turbine turbocharger is generally disposed in the engine room together with the internal combustion engine. As the ship navigates to different areas of the environment, the temperature of the engine room varies with the area. At this time, for example, when the temperature is moved from a region having a high temperature and a high humidity to a region having a low temperature, condensation tends to occur in the electric motor generator. For this reason, it is conceived that electric current flows to the coil of the stator in the electric motor generator to heat the coil by electric resistance to prevent the occurrence of condensation. When the internal combustion engine is started, the compressor and the turbine are rotated by using the electric motor. At this time, when the electric current is supplied to the coil of the stator to heat the electric motor, an overcurrent flows to the electric motor and the fuse of the circuit is blown There is a problem.

An object of the present invention is to provide an exhaust turbine turbocharger, a cycle, and a ship which can prevent the occurrence of condensation in the electric motor generator and enable the electric motor generator to operate appropriately.

According to an aspect of the present invention, there is provided an exhaust turbine turbocharger including a compressor and a turbine coaxially connected to each other, a motor generator connected to a shaft end of the compressor, A rotation number detection estimating device for detecting or estimating the number of revolutions of the electric motor generator; and a control device for controlling the rotation speed of the electric generator when the number of revolutions of the electric motor generator detected or estimated by the number of revolutions detection device exceeds a preset predetermined number of revolutions And a control device for stopping the heater device.

Therefore, it is possible to suppress the occurrence of condensation in the electric motor-generator and to reduce the number of revolutions of the electric motor-generator connected to the compressor and the turbine by a predetermined rotation If the number is exceeded, the supply of current to the winding is stopped by stopping the heater device, so that no overcurrent flows through the motor-generator, and the motor-generator can be properly operated by preventing the fuse from cutting.

In the exhaust turbine supercharger according to the present invention, the control device stops the heater device when an operating gas command signal for supplying the operating gas is inputted in a period.

Therefore, by stopping the heater device by the operating gas command signal, the heater device is stopped before the cycle, the compressor, and the turbine are driven and rotated. Thus, the overcurrent does not flow to the electric motor generator, It can be operated properly.

In the exhaust turbine supercharger according to the present invention, when the operating gas command signal is input, the control device starts supplying the operating gas to the period after a predetermined first waiting time elapses after stopping the heater device .

Therefore, by starting the supply of the working gas to the cycle after the lapse of the first waiting time from the input of the working gas command signal, the supply of the working gas to the cycle is started after the heater apparatus is completely stopped, Even if a delay occurs, it is possible to properly stop the heater device before the cycle and the compressor and the turbine are driven and rotated.

In the exhaust turbine supercharger of the present invention, the control device stops the heater device when a fuel supply command signal for supplying fuel in the period is inputted.

Therefore, by stopping the heater device by the fuel supply command signal, the heater device is stopped before the cycle, the compressor, and the turbine are driven and rotated. Thus, the overcurrent does not flow to the electric motor generator, It can be operated properly.

In the exhaust turbine supercharger according to the present invention, when the fuel supply command signal is input, the control device starts supply of the working gas for the cycle after the predetermined first waiting time elapses after stopping the heater device , And then the fuel is supplied in the above cycle.

Therefore, by supplying the working gas to the cycle after the lapse of the first waiting time from the input of the fuel supply command signal, and then supplying the fuel to the cycle, the supply of the working gas to the cycle So that even if an electrical delay of the signal occurs, the heater device can be properly stopped before the cycle and the compressor and the turbine are driven and rotated.

In the exhaust turbine supercharger of the present invention, an auxiliary blower for supplying a combustion gas is formed in the cycle, and the control device stops the heater device when the auxiliary blower is started.

Therefore, by stopping the heater device when the auxiliary blower is started, the heater device is stopped before the cycle, the compressor, and the turbine are driven and rotated. Thus, the overcurrent does not flow to the electric motor generator, It can be operated properly.

In the exhaust turbine supercharger according to the present invention, when the number of revolutions of the motor-generator detected or estimated by the number-of-revolutions detection device becomes equal to or less than a preset prescribed number of revolutions, And the heater device is operated.

Therefore, by operating the heater device after the elapse of the second waiting time after the number of revolutions of the motor generator becomes equal to or less than the specified number of revolutions, the driving shaft is rotated for a predetermined time by the inertia force after the motor generator is stopped, And the heater can be operated after the electric motor generator is completely stopped, so that the reliability can be improved.

In the exhaust turbine supercharger of the present invention, the control device operates the heater device after a predetermined third waiting time elapses when an operating gas supply stop command signal is inputted.

Therefore, by operating the heater device after the elapse of the third waiting time after the operating gas supply stop command signal is inputted, the driving shaft is rotated for a predetermined time by the inertia force after the compressor and the turbine stop, And the heater device can be operated after the electric motor generator is completely stopped, so that the reliability can be improved.

In the exhaust turbine supercharger of the present invention, the control device operates the heater device after a predetermined fourth waiting time elapses when a fuel supply stop command signal is input.

Therefore, by operating the heater device after the lapse of the third waiting time after the input of the fuel supply stop command signal, the drive shaft is rotated for a predetermined time by the inertial force after stopping the compressor and the turbine, but during the fourth waiting time, And the heater can be operated after the electric motor generator is completely stopped, so that the reliability can be improved.

In the exhaust turbine supercharger according to the present invention, the control device operates the heater device after a predetermined fifth waiting time elapses after the driving of the auxiliary blower is stopped.

Therefore, by operating the heater device after the lapse of the fifth waiting time after the driving of the auxiliary blower is stopped, the driving shaft is rotated for a predetermined time by the inertia force after the compressor and the turbine stop, but the driving shaft is completely stopped And the heater device can be operated after the electric motor generator is completely stopped, so that the reliability can be improved.

The period of the present invention is characterized by including a main body and the exhaust turbine turbocharger.

Therefore, in the exhaust turbine supercharger, by forming a heater device for supplying electric current to the windings of the stator of the motor-generator, the occurrence of condensation in the motor-generator can be suppressed, The supply of electric current to the windings is stopped by stopping the heater device when the number of revolutions of the electric generator exceeds the predetermined number of revolutions so that no overcurrent flows in the electric generator and the electric generator is properly operated .

The ship of the present invention is characterized by having the above-mentioned period.

Therefore, the occurrence of condensation in the electric motor generator can be suppressed, and the electric generator can be properly operated by preventing the fuse from being cut off, thereby improving the stability at the time of navigation.

According to the exhaust turbine turbo supercharger, the cycle, and the ship of the present invention, the generation of condensation in the electric motor generator can be suppressed, and the electric generator can be properly operated by preventing the fuse from being cut off.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view showing a cycle including the exhaust turbine turbocharger of the first embodiment. FIG.
2 is a schematic view showing a current circuit of the electric motor generator.
3 is a flowchart showing the control of the air run mode in the diesel engine.
4 is a time chart showing the control of the air run mode in the diesel engine.
5 is a flowchart showing the control of the fuel operation mode in the diesel engine provided with the exhaust turbine turbocharger of the second embodiment.
6 is a time chart showing the control of the fuel operation mode in the diesel engine.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of an exhaust turbine turbocharger, a cycle, and a ship according to the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the present invention is not limited to the embodiments, and when a plurality of embodiments are provided, the embodiments may be combined.

[First Embodiment]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic structural view showing a cycle including the exhaust turbine turbocharger of the first embodiment; FIG.

1, a marine diesel engine (internal combustion engine) 1 as a cycle is provided with a diesel engine main body 2, an exhaust turbine turbocharger 3, an auxiliary blower 4, , And a control device (5). The diesel engine main body 2 is provided with a plurality of cylinder portions 13. Each cylinder portion 13 is supported so that the pistons can freely reciprocate within each piston And the lower portion is connected to the crankshaft via the crosshead.

The cylinder 13 is connected to a sweeping trunk 15 through an intake port 14 and to an exhaust manifold 17 via an exhaust port 16. The scavenging trunk 15 is connected to the compressor 21 of the exhaust turbine turbocharger 3 through the intake pipe L1. The exhaust manifold 17 is connected to the turbine 22 of the exhaust turbine turbocharger 3 via an exhaust pipe L2. The cylinder portion 13 is formed with an injector (fuel supply device) 18 for injecting fuel (for example, heavy oil, natural gas, etc.) into the cylinder portion 13. Each injector 18 is connected to a fuel pump (not shown).

The compressor 21 and the turbine 22 are connected to each other via a rotary shaft 23 so that the compressor 21 and the turbine 22 are connected to the rotary shaft 23 As shown in Fig. The compressor 21 has an intake pipe L3 connected to an intake pipe L3 for intake from the outside and an intake pipe L1 connected to a scavenging trunk 15 connected thereto. The exhaust pipe L2 leading to the exhaust manifold 17 is connected to the turbine 22 and an exhaust pipe L4 for exhausting the exhaust gas to the outside is connected.

Therefore, the turbine 22 is driven by the exhaust gas (combustion gas) guided from the exhaust manifold 17 through the exhaust pipe L2, drives the compressor 21, and exhausts the exhaust gas to the exhaust pipe L4 To the outside. On the other hand, the compressor 21 is driven by the turbine 22 to compress gas such as air drawn in from the intake pipe L3, and then supplies the gas such as compressed air to the intake pipe L1 as a combustion gas. To the scavenging trunk 15.

The diesel engine main body 2 is also provided with an operating gas supply device 24 for supplying an operating gas such as air to the cylinder portion 13 to increase the engine speed by operating an unillustrated piston of the cylinder portion 13 Is formed. The working gas supply device 24 includes an operating gas supply source 25 (for example, an accumulator or a pump), an on-off valve 26, and an operating gas supply line L5. A working gas supply source 25 is connected to the proximal end of the working gas supply pipe L5 and a distal end portion of the working gas supply pipe L5 is connected to each of the cylinder portions 13 and an opening / closing valve 26 corresponding to each of the cylinder portions 13 Respectively. The operating gas supply device 24 is configured to open and close each of the opening and closing valves 26 at the time of starting the marine diesel engine 1 so that the working gas of the working gas supply source 25 is supplied from the working gas supply pipe L5 to the cylinder portion The supply and stop of the supply of the electric power to the electric motor 13 is repeated. As a result, the crankshaft can be rotated via the crosshead by operating a piston (not shown) formed in the cylinder portion 13 without injecting fuel into the cylinder portion 13.

In the present embodiment, the diesel engine main body 2 is provided with at least an air run mode (test operation mode) and a fuel operation mode. The air run mode is an operation mode in which the crankshaft is rotated only by the working gas supply device 24, for example, at the time of maintenance of the diesel engine main body 2. The fuel operation mode is an operation mode in which the crankshaft is started to rotate by the working gas supply device 24 and the fuel injection to the cylinder portion is started after the crankshaft reaches a predetermined number of revolutions or more to rotate the crankshaft.

The exhaust turbine turbocharger 3 is connected to the electric motor generator 32 via a compressor 21 and a rotary shaft 31 coaxial with the rotary shaft 23 of the turbine 22 as a hybrid supercharger. The electric motor generator 32 is composed of a rotor fixed to the rotary shaft 31 and a stator fixed to the casing and disposed around the rotor, although not shown. This electric motor generator 32 has a power generating function for generating electric power by being driven by the exhaust gas and has a transmission function for driving and rotating the compressor 21 and the turbine 22. [

The exhaust turbine turbocharger 3 is provided with a power inverter 33. The power conversion apparatus 33 includes a first power conversion section 34, a power storage section 35, and a second power conversion section 36. The first power converting section 34 is connected to the motor generator 32 and converts the AC power generated by the motor generator 32 into DC power during the regeneration operation of the motor generator 32 and outputs the DC power. The second power conversion section 36 is connected to the inboard power system 37 and supplies the direct current power from the first power conversion section 34 to the inboard power system 37 during the regeneration operation of the motor / Phase AC power suitable for the on-board power system 37 and outputs it to the in- The power storage unit 35 is connected between the first power conversion unit 34 and the second power conversion unit 36 and stores the DC power from the first power conversion unit 34 by a predetermined amount. The power storage unit 35 is formed for smoothing the power output to the second power conversion unit 36 and supplies the electric power stored at the start of the regenerative operation of the motor generator 32 to the second power conversion unit 36 Output. The electric power output to the second electric power conversion section 36 after the start of the regenerative operation is output from the electric motor generator 32 via the first electric power conversion section 34. [

The second power conversion section 36 converts the three-phase AC power from the inboard power system 37 into direct current power and outputs it to the first power conversion section 34 at the time of backward operation of the electric motor generator 32 do. The first power converting section 34 converts the direct current power from the second power converting section 36 into alternating current power and outputs it to the electric motor generator 32 at the time of backward operation of the electric motor generator 32. The power storage unit 35 stores the DC power from the second power conversion unit 36 by a predetermined amount. The power storage unit 35 is provided for smoothing the power output to the first power conversion unit 34 and supplies the electric power stored at the start of the backward operation of the motor generator 32 to the first power conversion unit 34 Output. The power output to the first power conversion unit 34 after the start of the backward operation is output from the inboard power system 37 via the second power conversion unit 36. [

For example, the first power conversion section 34 is a converter, the power storage section 35 is a capacitor, the second power conversion section 36 is a capacitor, Inverter.

The exhaust turbine turbocharger 3 is also provided with a space heater (heater device) 60 for supplying electric current to the windings of the stator of the electric motor generator 32 for heating. 2, the motor generator 32 includes a stator 62 disposed on the outer circumferential side of the rotor 61. The rotor 61 is fixed to the rotating shaft 63 with a magnet 64 fixed And the stator 62 is formed by winding a coil (a coil) 66 on the iron core 65. The space heater 60 supplies electric current to the coil 66 of the stator 62 to heat it.

The coil 66 of the stator 62 of the motor generator 32 is connected to the first power source 68 via the first switch 67 and to the fuse 69 and the second switch 66. [ And the second power source 71 is connected via the second power source 70. The winding 66 of the stator 62 indicates the line of the three-phase molded wiring, and connection cables 72 and 73 are formed. The connection cables 72 and 73 are connected to the first branch cables 74 and 75 and the first branch cables 74 and 75 are connected to the first power source 68 . The second branch cables 76 and 77 are connected to the connection cables 72 and 73 and the second branch cables 76 and 77 are connected via the fuse 69 and the first switch 70 And a second power source 71 is connected. Here, the first power source 68 generates a torque by feeding the electric power to the electric motor generator 32, and is a power conversion device using a semiconductor. The second power source 71 is to heat the space heater 60 by supplying electricity thereto. Further, the first switch 67 and the second switch 70 are selectively connectable and controlled so as not to be turned ON (conduction) at the same time.

The space heater 60 heats the windings 66 by electric resistance by supplying current to the windings 66 of the stator 62 and heating them to prevent the occurrence of condensation in the stator 62 . However, if a voltage is generated when the motor generator 32 is rotated when a current is supplied from the second power source 71 to the stator 62, an overcurrent flows to the second branch cables 76 and 77 and the fuse 69 ) Is cut off.

1, in the exhaust turbine turbocharger 3, the number of revolutions of the electric motor generator 32 is defined as a revolution number sensor (revolution number detection estimating device) 54, The apparatus 5 is configured to block the second switch 70 of the space heater 60 when the number of rotations of the motor generator 32 detected by the number of rotations sensor 54 exceeds a preset predetermined number of rotations.

On the other hand, the rotation speed sensor 54 does not have sufficient detection precision. In other words, the rotation speed sensor 54 can not sufficiently detect all the revolving regions of the motor generator 32, and can sufficiently detect all the revolving regions of the motor generator 32 The same thing is very expensive, and the cost of parts is greatly increased. Thus, in the present embodiment, as the number-of-rotations detecting apparatus for estimating the number of rotations of the electric motor generator 32, signals of various apparatuses are used in combination.

The auxiliary blower 4 is composed of a blower impeller 41 and a blower motor (motor) 42. The auxiliary blower 4 is driven at the start of the marine diesel engine 1 to compress gas such as air that has been sucked from the intake pipe L3 via the compressor 21 and then to supply a gas such as compressed air And is sent as a combustion gas from the intake pipe L6 to the small trunk 15 via the intake pipe L1. Although the intake pipe L6 is formed in parallel with the intake pipe L1 and the auxiliary blower 4 (blower impeller 41) is formed in the intake pipe L6, The engine L6 need not be formed in parallel and only the intake pipe L1 may be formed without forming the intake pipe L6 and the auxiliary blower 4 may be formed in the intake pipe L1.

The control device 5 is provided with a first control device 51 for controlling the electric motor generator 32 and a second control device 52 for controlling the diesel engine main body 2 and the auxiliary blower 4 .

The first control device 51 can control the electric motor generator 32 by controlling the first electric power converting section 34 and the second electric power converting section 36. [ That is, the first control device 51 controls the first power conversion section 34 and the second power conversion section 36 in accordance with the drive state (regenerative operation state or reverse operation state) of the electric motor generator 32 Control the function.

The second control device 52 can drive and control the injector 18 and the working gas supply device 24 in the diesel engine main body 2. [ The second control device 52 drives and controls each of the injectors 18 to control the fuel injection timing and the fuel injection amount. The second control device 52 controls the opening and closing of the open / close valve 26 constituting the working gas supply device 24 to control the operating gas supply timing and the working gas supply amount to the cylinder portion 13. The second control device 52 controls the auxiliary blower 4 to supply the combustion gas such as compressed air to the diesel engine main body 2 to control the small air pressure .

The second control device 52 is connected to a steering device 53 for outputting various command signals in navigating the ship. The control device 53 is capable of selecting at least the air run mode and the fuel operation mode so that the start control stop signal of the auxiliary blower 4 is transmitted to the second control device 52, (Fuel supply command signal, fuel supply stop command signal) with respect to the diesel engine main body 2 can be outputted to the diesel engine main body 2 in response to the start command signal (operation gas command signal, operating gas supply stop command signal)

When the engine start preparation signal is input, the control device 5 starts driving the auxiliary blower 4 to start the gas such as compressed air as a combustion gas to the scavenging trunk 15 of the marine diesel engine 1 So that the atmospheric pressure (intake pressure) is raised. When the engine rotation start signal is input, the controller 5 starts driving the working gas supply device 24 to raise the engine rotation speed. When the engine rotation speed reaches the predetermined fuel supply start rotation speed, And drives each injector 18 to supply fuel to the diesel engine body 2. [ Then, the marine diesel engine 1 starts operation by combustion.

When the engine start preparation signal is input, the control device 5 converts the three-phase AC power from the inboard power system 37 into direct current power by controlling the second power conversion unit 36 and supplies it to the power storage unit 35 , And the voltage of the power storage unit 35 reaches a predetermined standby voltage. When the voltage of the power storage unit 35 reaches the standby voltage, the control unit 5 controls the first power conversion unit 34 to convert the DC power of the power storage unit 35 into AC power, The generator 32 is started, the auxiliary blower 4 is stopped, and the exhaust turbine turbocharger 3 is set to the power feeding mode. Thereafter, the control device 5 sets the normal operation mode in which the exhaust turbine turbocharger 3 is driven only by the exhaust gas. When the load further rises and exhaust gas is generated in excess of the energy required for driving the exhaust turbine turbocharger 3, surplus exhaust gas energy is recovered as electric energy, To the inboard power system (37) to place the exhaust turbine turbocharger (3) in the power generation mode.

In the first embodiment, in the air run mode, when the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 exceeds a preset prescribed rotational speed, the control device 5 controls the space heater 60 Stop. That is, when an air run command signal (operating gas command signal) for supplying an operating gas such as air to the cylinder portion 13 of the diesel engine main body 2 is input, the controller 5 sets the space heater 60 Stop. At this time, when the air run command signal is inputted, the controller 5 stops the space heater 60, and after the predetermined first waiting time T1 elapses after the air run command signal is inputted, .

On the other hand, when the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 becomes equal to or less than the predetermined specified rotational speed in the air run mode, the controller 5 determines that the predetermined second waiting time T2 has elapsed Thereafter, the space heater 60 is operated. That is, when the input of the air run command signal disappears (when the operation gas supply stop command signal is inputted), the control device 5 operates the space heater 60 after the predetermined third waiting time T3 elapses.

Here, the control method of the exhaust turbine turbocharger of the first embodiment will be described in detail using a flow chart and a time chart. FIG. 3 is a flowchart showing the control of the air run mode in the diesel engine, and FIG. 4 is a time chart showing the control of the air run mode in the diesel engine.

In the air run mode of the marine diesel engine 1 in the control method of the exhaust turbine turbocharger of the first embodiment, as shown in Fig. 3, the control device 5, at step S1, , It is determined whether or not the air run command signal is inputted (ON) from the control device 53. If it is determined that the air run command signal has not been input (No), the process stands by, and when it is determined that the air run command signal has been input (Yes), the process proceeds to step S2. In step S2, the space heater 60 which has been operated is stopped.

In step S3, the control device 5 determines whether or not a predetermined first waiting time T1 has elapsed since the input of the air run command signal. If it is judged that the first waiting time T1 has not elapsed since the air run command signal is inputted (No), it is waited as it is. If it is judged that the first waiting time T1 has elapsed after the air run command signal is inputted ), The air run is started in step S4.

In step S5, the control device 5 determines whether or not the input of the air run command signal is OFF (OFF). If it is determined that the air run command signal is input (No), the process stands by. If it is determined that the air run command signal is not input (Yes), the air run is terminated in step S6.

In step S7, the control device 5 determines whether or not the rotational speed of the motor generator 32 detected by the rotational speed sensor 54 is equal to or less than a predetermined prescribed rotational speed (for example, 10 rpm) It is determined whether or not time T2 has elapsed. Here, when it is determined that the second waiting time T2 has not elapsed since the rotational speed of the electric motor generator 32 becomes equal to or less than the predetermined rotational speed (No), the hybrid vehicle waits as it is and the rotational speed of the electric motor generator 32 is not more than the predetermined rotational speed , The process proceeds to step S8 when it is determined that the second waiting time T2 has elapsed (Yes).

In step S8, the control device 5 determines whether or not the predetermined third waiting time T3 has elapsed after the input of the air run command signal is turned off (OFF). Here, when it is determined that the third waiting time T3 has not elapsed since the input of the air run command signal has been lost (No), the processing waits as it is. When the third waiting time T3 elapses after the input of the air run command signal is lost (Yes), the space heater 60 is operated in step S9.

The operation stop timing of the space heater in the exhaust turbine supercharger according to the first embodiment will be described. As shown in Fig. 4, when the air run command signal is inputted at time t1, the space heater 60 is stopped. At the time t2 when the first waiting time T1 has elapsed since the input of the air run command signal, the air run is started. Then, the crankshaft rotates as the working gas is supplied to the cylinder portion 13 of the diesel engine main body 2, and this working gas is discharged from the cylinder portion 13, whereby the compressor 21 and the turbine 22 rotate , The speed of the supercharger is increased.

At time t3, when the input of the air run command signal disappears, the air run is terminated. Then, the supply of the working gas to the cylinder portion 13 of the diesel engine main body 2 is stopped, whereby the rotation of the crankshaft is stopped and the discharged working gas is reduced, so that the compressor 21 and the turbine 22 are stopped , The speed of the turbocharger is lowered. At a time t5 when the second waiting time T2 elapses from the time t4 when the number of revolutions of the motor generator 32 becomes equal to or less than the predetermined number of revolutions and the time t3 when the air run command signal is input to the third waiting time T3 has elapsed , And activates the space heater 60 that has been stopped. The reason why the second and third waiting times T2 and T3 are set is that the electric motor generator 32, the compressor 21 and the turbine 22 can not stop immediately even if they output the driving stop signal, So that the space heater 60 is operated after the electric motor generator 32 is completely stopped.

The second and third waiting times T2 and T3 have been described as being simultaneously elapsed at the time t5. However, since the second and third waiting times T2 and T3 are different from each other in the set time, . In this case, the space heater 60 is operated at the time when all elapsed times T2 and T3 have elapsed.

Here, in the present embodiment, the space heater 60 is operated in accordance with the number of revolutions of the electric motor generator 32 and the air run command signal, but the present invention is not limited to this configuration.

As described above, the exhaust turbine supercharger of the first embodiment includes the compressor 21 and the turbine 22 coaxially connected to each other, the motor generator 32 connected to the shaft end of the compressor 21, the motor generator 32, A space heater 60 for supplying electric current to the windings 66 in the stator 62 of the electric generator 32 and a rotation speed sensor 54 for detecting the rotation speed of the electric motor generator 32, The control unit 5 stops the space heater 60 when the rotational speed of the electric motor generator 32 detected by the electric motor generator 32 exceeds a preset predetermined rotational speed.

Therefore, by forming the space heater 60 for supplying electric current to the winding 66 in the stator 62 of the electric motor generator 32 to heat the electric motor 32, the occurrence of condensation in the electric motor generator 32 can be suppressed . When the number of revolutions of the motor generator 32 connected to the compressor 21 and the turbine 22 exceeds the predetermined number of revolutions, the supply of current to the winding 66 is stopped by stopping the space heater 60 Therefore, the overcurrent does not flow to the electric motor generator 32, and the electric motor / generator 32 can be properly operated by preventing the fuse 69 from being cut off.

In the exhaust turbine supercharger according to the first embodiment, the control device 5 stops the space heater 60 when an operating gas command signal for supplying air to the diesel engine main body 2 is input. Therefore, the space heater 60 is stopped before the diesel engine main body 2, the compressor 21, and the turbine 22 are driven and rotated. Thus, the overcurrent does not flow to the motor generator 32, The electric generator 32 can be properly operated.

In the exhaust turbine supercharger according to the first embodiment, when the operating gas command signal is input, the control device 5 starts the air run after the first waiting time T1 elapses after the space heater 60 is stopped. Therefore, even if an electrical delay of the signal occurs due to the air heater being started after the space heater 60 is completely stopped, the diesel engine main body 2, the compressor 21, and the turbine 22 are properly titled The space heater 60 can be stopped.

In the exhaust turbine supercharger according to the first embodiment, when the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 becomes equal to or lower than the predetermined rotational speed, the controller 5 determines that the space heater (60). Therefore, after the motor generator 32 is stopped, the rotor 61 is rotated by the inertia force for a predetermined time, but is completely stopped during the second waiting time T2. After the motor generator 32 is completely stopped, the space heater 60 ) Can be operated, and reliability can be improved.

In the exhaust turbine supercharger according to the first embodiment, the controller 5 operates the space heater 60 after the elapse of the third waiting time T3 when the operating gas supply stop command signal is inputted. Therefore, after the compressor 21 and the turbine 22 are stopped, the rotary shaft 23 is rotated for a predetermined time by the inertial force, but is completely stopped during the third waiting time T3. After the electric motor generator 32 is completely stopped The space heater 60 can be operated, and reliability can be improved.

In the cycle of the first embodiment, the diesel engine main body 2 and the exhaust turbine turbocharger 3 are formed. Therefore, in the exhaust turbine turbocharger 3, the space heaters 60 for supplying electric current to the windings 66 in the stator 62 of the electric generator 32 to heat the electric generator 32 are provided, So that the occurrence of condensation can be suppressed. When the number of revolutions of the motor generator 32 connected to the compressor 21 and the turbine 22 exceeds the predetermined number of revolutions, the supply of current to the winding 66 is stopped by stopping the space heater 60 Therefore, the overcurrent does not flow to the electric motor generator 32, and the electric motor / generator 32 can be properly operated by preventing the fuse 69 from being cut off.

The ship of the first embodiment is provided with a marine diesel engine 1. Therefore, the occurrence of condensation in the electric motor generator 32 can be suppressed, and the fuse 69 can be prevented from being cut off, so that the electric motor generator 32 can be properly operated, .

[Second Embodiment]

Fig. 5 is a flowchart showing the control of the fuel operation mode in the diesel engine provided with the exhaust turbine turbocharger of the second embodiment. Fig. 6 is a time chart showing the control of the fuel operation mode in the diesel engine. The basic structure of the present embodiment is almost the same as that of the first embodiment described above and will be described with reference to Fig. 1, and members having the same functions as those of the first embodiment are denoted by the same reference numerals, Is omitted.

In the second embodiment, as shown in Fig. 1, the second control device 52 is connected to a steering device 53 for outputting various command signals in navigating the ship. The control device 53 is capable of selecting at least the air run mode and the fuel operation mode so that the start control stop signal of the auxiliary blower 4 is transmitted to the second control device 52, (Fuel supply command signal, fuel supply stop command signal) with respect to the diesel engine main body 2 can be outputted to the diesel engine main body 2 in response to the start command signal (operation gas command signal, operating gas supply stop command signal)

The controller 5 stops the space heater 60 when the number of rotations of the motor generator 32 detected by the number of rotations sensor 54 exceeds the predetermined number of rotations in the fuel operation mode. That is, when the fuel operation command signal (fuel supply command signal) for supplying the working gas and the fuel such as air to the cylinder portion 13 of the diesel engine main body 2 is inputted, the control device 5 controls the space heater 60 ). At this time, when the fuel operation command signal is input, the controller 5 stops the space heater 60, and after the predetermined first waiting time T11 elapses after the input of the fuel operation command signal, The supply of the working gas to the cylinder portion 13 from the supply device 24 is started. The rotation of the crankshaft is started by the working gas and the supply of the fuel is started after the crankshaft reaches the predetermined number of revolutions N1 or more. The rotation speed of the crankshaft is further raised by the start of the fuel operation, and the supply of the working gas is stopped after the predetermined number of revolutions N2 (N2 > N1) or more.

The controller 5 stops the space heater 60 when the auxiliary blower 4 is started.

On the other hand, when the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 becomes equal to or less than the preset prescribed rotational speed in the fuel operation mode, the controller 5 determines that the predetermined second waiting time T12 Thereafter, the space heater 60 is operated. That is, the control device 5 operates the space heater 60 after the elapse of the predetermined fourth waiting time T14 when the input of the fuel operation command signal disappears (when the fuel supply stop command signal is input). The control device 5 operates the space heater 60 after a predetermined fifth waiting time T15 elapses after the driving of the auxiliary blower 4 is stopped.

Here, the control method of the exhaust turbine turbocharger of the second embodiment will be described in detail using a flowchart and a time chart.

5, in the fuel operation mode of the marine diesel engine 1, in the control method of the exhaust turbine turbocharger of the second embodiment, the control device 5 receives, from the steering device 53, When the engine start preparation signal is inputted, the auxiliary blower 4 is operated to press-feed the combustion gas to the cylinder portion 13 through the small trunk 15 to raise the small air pressure (intake pressure). Then, in step S22, the space heater 60 which has been operated is stopped. In step S23, the control device 5 determines whether or not a fuel operation command signal is input (ON) from the control device 53. [ If it is determined that the fuel operation command signal is not inputted (No), the process remains in the standby state. If it is determined that the fuel operation command signal has been input (Yes), the process proceeds to step S24.

In step S24, the control device 5 determines whether or not the predetermined first waiting time T11 has elapsed since the input of the fuel operation command signal. If it is determined that the first waiting time T11 has not elapsed since the input of the fuel operation command signal (No), it is determined that the first waiting time T11 has elapsed since the input of the fuel operation command signal ), The air run is started in step S25. In step S26, the control device 5 determines whether or not the air run has been completed. If it is determined that the air run has not ended (No), the process remains in the standby state. If it is determined that the air run has ended (Yes), the air run is ended in step S27. Then, in step S28, the control device 5 starts fuel supply to the diesel engine main body 2 to start the diesel engine main body 2. Fig.

When the engine rotation start signal is inputted, the control device 5 controls the opening / closing valve 26 to open and close the diesel engine main body 2 to supply the operating gas to the diesel engine main body 2, . The control device 5 drives the injector 18 to inject fuel into the cylinder portion 13 of the diesel engine body 2 when the engine speed reaches the fuel supply start rotation speed. Then, the marine diesel engine 1 ignites the fuel in the cylinder 13 and starts combustion, so that the combustion operation is started.

In step S29, the control device 5 determines whether or not the input of the fuel operation command signal is OFF (OFF). If it is determined that the fuel operation command signal is input (No), the process remains in the standby state. If it is determined that the fuel operation command signal is not input (Yes), the fuel supply to the diesel engine body 2 Lt; / RTI > Then, in step S31, the control device 5 stops the operation of the auxiliary blower 4.

In step S32, the controller 5 determines whether or not the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 is equal to or lower than a predetermined prescribed rotational speed (for example, 10 rpm) It is determined whether or not time T12 has elapsed. Here, when it is determined that the second waiting time T12 has not elapsed after the number of revolutions of the electric motor generator 32 becomes equal to or lower than the predetermined number of revolutions (No), the control waits as it is and the number of revolutions of the motor- And the second waiting time T12 has elapsed (Yes), the process proceeds to step S33.

In step S33, the control device 5 determines whether or not the predetermined fourth waiting time T14 has elapsed since the input of the fuel operation command signal is turned off (OFF). Here, when it is determined that the fourth waiting time T14 has not elapsed since the disappearance of the input of the fuel operation command signal (No), the control waits as it is. When the fourth waiting time T14 has elapsed after the input of the fuel- (Yes), the process proceeds to step S34.

In step S34, the control device 5 determines whether or not the predetermined fifth waiting time T15 has elapsed after the driving of the auxiliary blower 4 is stopped. Here, if it is determined that the fifth waiting time T15 has not elapsed since the driving of the auxiliary blower 4 was stopped (No), the control waits and the fifth waiting time T15 after the driving of the auxiliary blower 4 is stopped If it is judged that it has passed (Yes), the space heater 60 is operated in step S35.

The operation stop timing of the space heater in the exhaust turbine supercharger according to the second embodiment will be described. As shown in Fig. 6, at the time t11, the auxiliary blower 4 is started and the space heater 60 is stopped. At time t12, the fuel run command signal is input, and the air run is started at time t13 when the first waiting time T11 has elapsed since the input of the fuel run command signal. Then, air is supplied to the diesel engine main body 2, whereby the crankshaft rotates, and this air is discharged, so that the compressor 21 and the turbine 22 rotate, and the turbocharger speed rises. At the time t14, the air run is terminated and the fuel supply is started to start the diesel engine main body 2. [

Thereafter, when the input of the fuel operation command signal disappears at time t15, the fuel supply is terminated and the driving of the diesel engine body 2 is stopped. Then, when the diesel engine main body 2 is stopped, the rotation of the crankshaft is stopped and the exhaust gas is reduced, whereby the compressor 21 and the turbine 22 are stopped to rotate, and the turbocharger rotation speed is reduced. The second waiting time T12 elapses from the time t16 when the number of revolutions of the motor generator 32 becomes equal to or less than the predetermined number of revolutions. The fourth waiting time T14 elapses from the time t15 when the input of the fuel operation command signal disappears. The suspended space heater 60 is operated at the time t18 when the fifth waiting time T15 has elapsed from the time t17 when the driving of the air conditioner 4 is stopped.

Although the second, fourth, and fifth waiting times T12, T14, and T15 have elapsed simultaneously with the time t18, the second, fourth, and fifth waiting times T12, T14, In some cases, different times may elapse. In this case, the space heater 60 is operated at the time when all the elapsed times T12, T14, and T15 have elapsed.

Here, in the present embodiment, the space heater 60 is operated in accordance with the rotation number of the electric motor generator 32, the fuel operation command signal, and the signals for stopping the driving of the auxiliary blower 4. However, It is not. The exhaust turbine turbocharger 3 is capable of rotating the compressor 21 and the turbine 22 at the start of the diesel engine main body 2 by supplying power to the motor generator 32, (4) can be eliminated.

When there is no auxiliary blower 4, the space heater 60 is stopped when the air run command signal is inputted at time t12 as indicated by the two-dot chain line in Fig. 6, and after the space heater 60 is stopped , The air run is started at time t13 when the first waiting time T11 has elapsed since the input of the fuel operation command signal. The reason why the first waiting time T11 is set is that the air run is started after the space heater 60 is completely stopped for the input of the air run command signal. At the time t18 when the second waiting time T12 elapses from the time t16 when the number of revolutions of the electric motor generator 32 becomes equal to or lower than the predetermined number of revolutions and the time t15 after the input of the fuel operation command signal has elapsed and the fourth waiting time T14 has elapsed , And activates the space heater 60 that has been stopped.

Thus, in the exhaust turbine supercharger according to the second embodiment, the controller 5 stops the space heater 60 when a fuel supply command signal for supplying air and fuel to the diesel engine main body 2 is input. Therefore, the space heater 60 is stopped before the diesel engine main body 2, the compressor 21, and the turbine 22 are driven and rotated. Thus, the overcurrent does not flow to the motor generator 32, The electric generator 32 can be properly operated.

In the exhaust turbine supercharger according to the second embodiment, when the fuel supply command signal is inputted, the control device 5 starts the air run after the lapse of the first waiting time T11 after stopping the space heater 60, Fuel is supplied. Therefore, even if an electrical delay of the signal occurs due to the air heater being started after the space heater 60 is completely stopped, the diesel engine main body 2, the compressor 21, and the turbine 22 are properly titled The space heater 60 can be stopped.

In the exhaust turbine supercharger of the second embodiment, the control device 5 stops the space heater 60 when the auxiliary blower 4 is started. Therefore, the space heater 60 is stopped before the diesel engine main body 2, the compressor 21, and the turbine 22 are driven and rotated. Thus, the overcurrent does not flow to the motor generator 32, The electric generator 32 can be properly operated.

In the exhaust turbine supercharger according to the second embodiment, when the rotational speed of the electric motor generator 32 detected by the rotational speed sensor 54 becomes equal to or lower than the predetermined rotational speed, the controller 5 determines that the space heater (60). Therefore, after the motor generator 32 is stopped, the rotor 61 is rotated by the inertia force for a predetermined time, but is completely stopped during the second waiting time T12. After the motor generator 32 is completely stopped, the space heater 60 ) Can be operated, and reliability can be improved.

In the exhaust turbine supercharger according to the second embodiment, the control device 5 operates the space heater 60 after the fourth waiting time T14 elapses when the fuel supply stop command signal is input. Therefore, after the compressor 21 and the turbine 22 are stopped, the rotary shaft 23 is rotated for a predetermined time by the inertial force, but is completely stopped during the fourth waiting time T14. After the electric motor generator 32 is completely stopped The space heater 60 can be operated, and reliability can be improved.

In the exhaust turbine supercharger according to the second embodiment, the control device 5 operates the space heater 60 after the lapse of the fifth waiting time T15 after the driving of the auxiliary blower 4 is stopped. Therefore, after the compressor 21 and the turbine 22 are stopped, the rotary shaft 23 is rotated for a predetermined time by the inertial force, but is completely stopped during the fifth waiting time T15, and the electric motor generator 32 is completely stopped The space heater 60 can be operated, and reliability can be improved.

In the embodiment described above, the stop of the space heater 60 is controlled in accordance with the air run command signal, the fuel operation command signal, and the stop signal of the auxiliary blower 4, and the rotation number of the electric motor generator 32, The operation of the space heater 60 is controlled in accordance with the run command signal, the fuel operation command signal, and the drive stop signal of the auxiliary blower 4. However, the present invention is not limited to this combination. The operation of the space heater 60 may be controlled only by the number of revolutions of the motor generator 32. The operation of the space heater 60 may be controlled by eliminating the number of revolutions of the motor generator 32, May be controlled.

1: Marine diesel engine (cycle)
2: Diesel engine body
3: exhaust turbine supercharger (supercharger)
4: Auxiliary blower
5: Control device
13:
18: Injector
21: Compressor
22: Turbine
24: working gas supply device
25: working gas source
26: opening / closing valve
32: Electric generator
33: Power converter
34: first power conversion section
35:
36: second power conversion section
37: Onboard power system
51: first control device
52: second control device
53: Steering device
54: rotation speed sensor (rotation speed detection estimation device)
60: Space heater (heater device)
61: Rotor
62:
66: Winding (coil)
67: first switch
68: First power
69: Fuse
70: second switch
71: Second power source
L1, L3: intake pipe
L2, L4: Exhaust pipe
L5: Working gas supply pipe

Claims (12)

A compressor and a turbine connected to the coaxial phase,
A motor generator connected to an end of the compressor,
A heater device for supplying electric current to the windings of the stator of the electric motor generator for heating,
A rotational speed detection estimating device for detecting or estimating the rotational speed of the electric motor generator;
And a control device for stopping the heater device when the number of revolutions of the motor-generator detected or estimated by the number-of-revolutions detection device exceeds a preset prescribed number of revolutions. The method according to claim 1,
Wherein the control device stops the heater device when an operating gas command signal for supplying operating gas is inputted in a period. 3. The method of claim 2,
Wherein the control device starts supply of the working gas for a period after a predetermined first waiting time elapses after stopping the heater device when the operating gas command signal is inputted. The method according to claim 1,
Wherein the control device stops the heater device when a fuel supply command signal for supplying fuel in the period is inputted. 5. The method of claim 4,
Wherein the controller is configured to stop the heater when the fuel supply command signal is input and then to start supply of the working gas for a period after a predetermined first waiting time has elapsed, And the exhaust gas is supplied to the exhaust turbine supercharger. The method according to claim 4 or 5,
Wherein an auxiliary blower for supplying small-sized gas is formed in the cycle, and the control device stops the heater device when the auxiliary blower is started. 7. The method according to any one of claims 1 to 6,
The control device operates the heater device after a predetermined second predetermined waiting time elapses when the rotational speed of the motor generator detected or estimated by the rotational speed detection estimating device becomes equal to or less than a preset prescribed rotational speed The exhaust turbine supercharger. The method according to claim 2 or 3,
Wherein the control device operates the heater device after a predetermined third predetermined waiting time elapses when an operating gas supply stop command signal is inputted. The method according to claim 4 or 5,
Wherein the control device operates the heater device after a predetermined fourth predetermined waiting time elapses when a fuel supply stop command signal is inputted. 10. A method according to any one of claims 4 to 6 or 9,
Wherein the control device operates the heater device after a predetermined fifth waiting time elapses after the driving of the auxiliary blower is stopped. A main body,
A cycle characterized by comprising the exhaust turbine supercharger according to any one of claims 1 to 10. A ship characterized by comprising the cycle according to claim 11.

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