JPS61110698A - Power plant - Google Patents

Abstract

PURPOSE:To make a highly efficient equipment setup and the promotion of effective energy-saving both attainable, by connecting an output terminal of an auxiliary power source installed in a frequency controlling device in parallel, to a space between the output side of a vibration absorbing device at the engine side and the input side of the said frequency controlling device at the generator side. CONSTITUTION:There is provided with an auxiliary power source for an exhaust gas turbine 21 or the like driven in a way of utilizing exhaust heat of exhaust gas energy or the like of an engine 1, whereby the recovered exhaust gas energy is replenishable to a generator 7 from the turbine 21. And, an output terminal 21a of the turbine 21 is connected to the input side of a frequency controlling device 18 at the front step of a clutch 19, and in time of emergency in the generator 7, even if the clutch is disengaged, output of the exhaust gas turbine 21 is restored to an output rotary shaft 3 from a power transmission system 6, thereby making up for engine power. And, even if the clutch 19 is disengaged, since the turbine 21 is connected to the side of the engine 1, there are none of nonload and overrotation. In addition, the turbine 21 is set up in parallel with the side part of the frequency controlling device 8, preventing equipment from going to hugeness, with compactification and setting operation is made ever so easy.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field 1] The present invention relates to a power plant, and particularly to a power plant equipped with a shaft-driven power generation system that is operated using part of the power of an engine, etc. An auxiliary power source for the gas turbine that collects snow and transmits power to the engine or generator.
141. “Excellent, highly efficient equipment layout and TL+Song style/2
Saving 1 channel 1゛ conversion 4: 'rt to form power branch 1 l
! l 1ro.

[Prior Art] In general, VJ power plants, especially marine power plants, achieve energy savings! , : Menibaino? Measures are being taken, and among them, the installation of a gas turbine is being devised.

As shown in Figure 3, the general configuration is as follows:
The exhaust gas turbine C is driven by the exhaust gas discharged from the engine for driving the engine, and its driving force is transmitted to the output shaft e of the engine via the power transmission system d. It is supposed to be done.

By the way, in the first exhaust gas energy recovery system using gas turbine C, exhaust gas turbine C
In order to install an exhaust gas turbine C between the output shaft f of the engine and the output shaft e of the engine l! Ir force transmission force transmission system membrane is required. In addition, while the output shaft e of the engine rotates at a low speed, the output shaft f of the exhaust gas turbine C is driven at an extremely high rotation speed. Furthermore, since the engine produces torsional vibration, a fluid coupling, etc., is installed to absorb the vibration so that this vibration is not transmitted to the IJI gas turbine C side.
If it's IJ, it's okay.

Therefore, the problem that the exhaust gas turbine C equipment's kth (initial) 1 ~ becomes extremely large is b-) t is very close to 1 degree ([l in a marine plant, as shown in Figure 4). Further energy generation 111) 1t (shaft drive power generation system 7 no 11 + AI this b is Otsuki 1 (+) sa 1';
There is one in every corner.

Shaft drive power generation system (1, engine 1) is H-driven ◆11S1
1) Transfer the power from the output rotating shaft e to the Yamanaka series i, and take out the power part and write it as the 1M moving axis, N: λ, this. connected to 1+, /
, ``+h'' by avoiding the operation of power generation ^k.

This shaft drive power generation system 1.1. Eliminates the need for power sources (generators) that were previously required separately to drive auxiliary equipment, simplifies the membrane width, reduces the number of running strokes, etc. It is possible to aim for

Therefore, in response to this proposal to install an eel-shaft drive power generation system 7-Ijl gas turbine C to recover gas energy and achieve energy savings, I received the f+ request.
There are 67,788 bows. This proposal is for power generation! ljl leap b
lI! On the opposite side to 11, a gas turbine C is connected in series to a generator R.

[Problem that the invention attempts to solve] By the way, exhaust gas turbine C is i! ! When I prepare one (ma).

As mentioned above, the power transmission system d of the exhaust gas turbine C, the reduction speed fj! Equipment such as fluid couplings is required to absorb vibrations and vibrations (Figure 3).

Here, in a power plant equipped with the shaft-driven power generation system shown in Fig. 1, when installing the f-turbine C4, it is originally necessary to stop vibration transmission to the generator 1. There is an advantage that a tongue-and-groove joint or the like can be used for the exhaust gas turbine C as well.

However, the next 31 ui ``4 L'l'l +j, i
S tl Lee, /, -,.

■In order to reduce the rotational speed of the 11 aircraft from the starting point and the rotational speed of the 1.71 million scoop C, the reduction gear 9 is placed between them.
It is necessary to provide

■ Since the 31 engine 9 is installed, separate rotating shafts are required for the generator 1 (side) and the exhaust gas turbine C side.

■ Therefore, when installing the pongee inside the ship, the kneading rotation axis p.

The centering adjustment work of f is completely eliminated and the installation f = I ff industry is converted into a furnace box.

■ Also, on the light 11, the engine side -2111 is the turbine C.
Two rotation axes m and β on the side and! Q must be prepared (A-).

■ Generator Nido 111 J Starbin 04 Axis 1) ln
The equipment installed at JSho 911 will be improved to 1. .

As mentioned above, there are 160 problems. ,1,/
J, ■ between the generator and the engine side and the gas turbine C side, there is an emergency 11. of the power generation 1ik. Let S drive that way.
Claps n and p are used to make the signal 1. For this reason y! In order to protect the electrolyte 1 (1), the exhaust gas turbine C, which is continuously driven, becomes unable to recover energy.

(2) Furthermore, when the clutch p is disengaged, the reflex load (power generation elk) is lost, and there is a risk that the exhaust gas turbine C may be over-rotated.

The following can be considered to be unsatisfactory from the point of view of achieving energy saving, such as (g).

[Object of the Invention] The present invention was devised in view of the above-mentioned problems, and its purpose is to provide a 111 The exhaust gas energy, etc. between the two is recovered and power is transmitted to the U III engine and generator. To provide a power plant capable of achieving a highly effective skewer/1 equipment arrangement and effective energy saving when equipped with an auxiliary power source such as a gas turbine.

[Summary of the invention] The present invention provides an auxiliary power source in parallel with the frequency control means that constitutes the shaft drive power generation system, and the output end of the power source is provided on the engine side.
It is connected between the output side of the first stage of vibration absorption and the manual steel of the frequency control means provided on the generator side.

[Example 1] A preferred embodiment of the present invention will be described below in detail with reference to the drawing IIY-1.

As shown in FIG. 1, the engine is a 1 tit n leap, and an output rotating shaft 3 for transmitting engine motion to drive a propulsion device 2 is connected to this engine 1.

And this output rotation shaft 3 has this! A shaft-driven power generation system similar to that described above is connected to the H-j gear 4, which is meshed with a Jk-th power extraction tooth width 5 for extracting a part of the engine power.

This shaft drive power generation system is mainly operated by a power transmission system 6 connected to a power extraction gear 5 to transmit a part of the extracted engine power, and the power connected to the power transmission system 6 and transmitted. It consists of a generator 7. In particular, in the present invention, the power transmission system 6 which is the input side of the power generation 11!7 has an input rotation speed from the power take-off gear 5 side, that is, the engine side rotation speed, in order to control the frequency of the generator 7. A frequency control means 8 is installed for controlling the output rotation speed to the power generation 1117 side. Regarding this frequency control means 8) When the frequency control means 8 is turned, the generator 7 has a constant frequency of 1r,
- It is necessary to rotate at a constant speed, whereas the rotation speed of marine engines frequently fluctuates due to disturbances such as waves. For this reason, the power transmission system 6 that connects the intermediary mtff 7 and the engine 1 side is controlled so that the output rotation speed of the generator 7 is constant), and the frequency control system 6 is used to control the frequency of the generator 4. Ding fi
t fl is 3Q l-1. This frequency control means is shown in FIG. 2. +111 Yamanaka Organization 9 Do Oil F [Circuit System 10 Do/) Port) T I=C4S'
+Size 1'+6゜differential play? South 11 mechanism 9 (1 inside N1 External tooth 11 formed on the outer periphery of Yamanaka 15 (this 11 dynamic rotation input tooth 12 is meshed with it. This input gear 12 transmits driving force while suppressing rotational speed fluctuations Q 11 In order to increase or decrease the revolution 1a of the floating tooth middle 13 and make the output rotation speed of the sun south middle 14 constant, the internal tooth fl! 15 is increased or decelerated.
F is driven in reverse.

Activate this internal tooth width 15! Drive control of the input gear 12 is performed by the hydraulic circuit system 10.

Detected by rotation speed detection means (not shown)! The output rotation speed to the generator 7 is used as a detection signal for the variable hydraulic pump 1.
6, the tilted color amount 1-units 1~ (not shown) are inputted. Here, the hydraulic pump 16 connects the power transmission system 6 to the gear 22.
It is configured to be driven by being supplied with power via the servo unit 1, and forward/reverse operation and control of the discharged oil are performed in response to a detection signal sent to the servo unit 1. (As a result, the hydraulic motor 17, which is operated by receiving hydraulic oil υ1 from the hydraulic pump 16, is controlled, and the input gear 12 is driven to rotate 11.

Between the frequency control means 8 configured in this way and the output rotating shaft 3 of the engine 1, there is a power takeoff gear 5 in the illustrated example.
A vibration absorbing means 18 such as an elastic joint is provided between the two to absorb torsional vibration from the engine 1 side.

On the other hand, the output side of the frequency υl1llf stage 8 and the output side? t[7, there is an input shaft 7a between the power transmission system 6 and the power generation llll7.
A clutch 19 is provided to connect and disconnect +Wt.
It will be done. For the shaft-driven φ11 power generation system configured as described above, an exhaust gas turbine 21 which is an auxiliary IJ+ iJ-〇- source is connected to the auxiliary IJ+ iJ-〇- source through a one-circle gas supply system 20 connected to the exhaust manifold 1a. i%neru. The J II gas turbine 21 (interlayer 1, 171) recovers 1 to 4 fs T channels.

This exhaust gas turbine 21 has been described above! Frequency n lal
611 parallel to means 8 in the body 1 11 1 degree, that is, the paddy is stirred by the turbine 21 +, 1 frequency control till l
'I'Q placed on the side of the
! 'lisa island! Although the number of methods increases, the number of methods increases in the longitudinal direction (one method increases in number (8 times)).

The output end 21a of the gas turbine 21 is connected to the output side of the vibration absorbing means 18 and to the input side of the frequency control first stage B. In the illustrated example, the output end 21a is constituted by a tooth width provided on a coupin output shaft, and is connected to the power transmission system 6 by meshing with a gear 22 for providing power to the hydraulic pump 16.

Therefore, the exhaust gas turbine 21 has a structure in which a vibration absorbing means 18 is interposed between the exhaust gas turbine 21 and the lllI leap 1 side.

Also, it is connected to the power transmission system 6 at a stage before one clutch interposed between the output side of the frequency control means 8 and the power generator 7, and is always connected to at least the engine 1 side regardless of whether the clutch 19 is engaged or disconnected. The configuration is as follows.

In addition, the output end 21a of the gas turbine 21 is connected to the engine 1.
A power take-off gear 5 for increasing the rotational speed of the output rotating wheel 3
The structure is such that the gear 22 is directly meshed with the gear 22 which is rotated at a relatively high speed.

Incidentally, the exhaust manifold 1a of the engine 1 is equipped with an exhaust gas turbocharger ta23 for pressurizing the intake air to the ridge.
J is done. In addition, a steam turbine 24 is installed on the side opposite to the side where the force from the 11 machine 1 is input to the departure machine 7. The steam turbine 24 is, for example, IJI 1Fλ of the engine 1.
It is driven by steam generated by heat, and further energy saving is achieved by recovering the heat of It's not a good structure.

Next, we will discuss the effect.

During normal navigation, II leaping power (t);
A portion is supplied to the shaft drive power generation system from the output rotating shaft 3. In this case, according to the present invention, the exhaust gas of the engine 1! An auxiliary power source is provided for the exhaust gas turbine 21vI that is driven by using the casting heat of the tank, and the collected gas J energy can be supplemented from the tank gas turbine 21 to the generator 7. Therefore, it is possible to reduce the power that must be extracted from the engine 1 side, thereby achieving energy savings. In particular, in the present invention, the output end 21a of the exhaust gas turbine 21 is connected to the input side of the frequency control means 8 at the front stage of the clutch 19, so that even if the clamp 19 is disconnected in an emergency of ff1lff7, for example, the exhaust gas turbine The output of 21 is transmitted from the power transmission system 6 to the output rotating shaft 3;! It is possible to supplement the engine power and effectively utilize the functions of the gas turbine 21! min<K energy saving can be achieved. Further, even if the clutch 19 is disengaged, the exhaust gas turbine 21 is connected to the engine 1 side, so there is no problem with no load, and overspeed can be reduced to one point.

On the other hand, as a visit to power plant equipment,
By arranging the I turbine 21 in parallel to the side of the frequency control means 8, the length of the SQ Wk can be prevented.
It has a compact configuration, and the integrated structure improves installation workability. Furthermore, as in the past, a separate centering operation is required in order to install the generator 7 and the exhaust gas turbine 21 in series, but according to the configuration of the present invention, the exhaust gas turbine 21 is connected to the frequency control means 8 using a gear or the like. It suffices to connect it to the input side, which also simplifies installation B.

On the other hand, release 1'! ! Vibration absorbing means 18 for 11ff7
The equipment can be simplified because it can be used as a box for the exhaust gas turbine. Further, since the output end 21a of the exhaust gas turbine 21 is connected to the input side of the frequency l1lIIl1 means 8 that rotates at a relatively high speed, it is not necessary to provide a speed reducer on the output shaft side of the exhaust gas turbine 21.

Furthermore, the generator 7 only needs to be provided with an input shaft to the engine 1 side, and does not require two shafts as in the conventional case.

From the above, it is possible to achieve extreme space saving and simplification of equipment in terms of layout, and by extension cost reduction.

Further, from the viewpoint of vibration countermeasures, it is preferable that the structure of the vibration absorbing means 181 is made of bamboo material, whereas the exhaust gas turbine 2 is provided with a material of 1q. Furthermore, in the power transmission system 6 where the output of the exhaust gas turbine is always supplemented, the load is reduced, and it is possible to reduce the strength of the gear system such as the power extraction gear 5 for extracting power.

Note that a clutch may be provided on the output shaft of the exhaust gas turbine 21.

[Efficacy of invention! i! 1. In summary, the present invention provides the following effects.

[111j Connecting an auxiliary power source such as a gas turbine that recovers the exhaust gas and energy of the engine to the power transmission system that connects the engine side and the generator 1) To supplement the engine power. can achieve energy savings. In particular, in the present invention, since the output end of the auxiliary power source is connected to the input side of the frequency control means of the power transmission system, regardless of the emergency situation of the generator, the recovered exhaust gas T channel 1 is always ′ etc. If
It is possible to contribute to the reduction before fff, and it is j2! ;
Achieved 11 points in one channel.

+2+ Since the auxiliary power source is configured to always carry a load, damage to the auxiliary power source such as over-speeding can be prevented by preventing it from being unloaded even in times of emergency when generating power.

(3) Place the auxiliary power source in parallel with the frequency control means! This τ゛ prevents the equipment from becoming too long and allows space raving;! Can be done. Particularly in marine equipment, it is extremely effective because it prevents the lead space from being reduced due to the single life.

(4) By arranging the auxiliary power source and the frequency III al1 stage in parallel, it is possible to create #A configuration inside the body. I will improve the installation workability as much as possible by doing the installation work, etc.

C・I) Since I connected the auxiliary φI to the input side of the frequency control means, I can't generate it as before. It is possible to make the i machine 2-axis (no need for 8-axis, 1-axis down).

6) Since the output end of the auxiliary power source is connected to the input side of the frequency 2-control means that rotates at a relatively fast speed, the deceleration Ifi
It is possible to simplify the equipment by eliminating the need for direct connection.

(7) Since the output end of the auxiliary power source is connected to the output side of the noise absorption means for the generator, there is no need to install a separate vibration absorbing stage for the auxiliary power source, reducing costs. I can figure it out.

(Mark: IJI gas turbine is placed on the output side of the vibration absorption means - Cyl! Electric ■, and the input side of the frequency control means ff L
/This increases the inertia t'l''\!fffl of the power transmission system L! (Ik<dynamic countermeasure) is advantageous.

(9) The output of the gas turbine is always 1+111.
111, the C''J load such as the power extraction mountain for extracting a part of the power from the output rotating shaft is installed in the eaves, and the strength design of these is made gentle.

[Brief Description of the Drawings] Fig. 1 is a system diagram showing a preferred embodiment of the present invention, Fig. 2 is an enlarged schematic perspective view of main parts, and Figs. 3 and 4 are system diagrams showing a conventional example. . In the figure, 1 is 611L3 is an output rotating shaft, 7 is a generator, 8 is a frequency output means, 18 is a vibration absorbing stage 1, 21 is an auxiliary power source, and 1) is a 1C exhaust gas turbine.

Claims (1)

[Claims] A generator operated with part of the power extracted from an output rotating shaft of an engine, etc., and a frequency control means provided on the input side of the generator to control the output rotation speed in order to control the frequency of the generator. , a vibration absorbing means provided between the frequency control means and the output rotating shaft for absorbing vibration; and a vibration absorbing means provided in parallel with the frequency control means, the output end of which is provided on the output side of the vibration absorbing means to absorb the vibration. A power plant comprising: an auxiliary power source connected to the input side of the control means.