JPS60261398A - Generator - Google Patents

Abstract

PURPOSE:To generate by a generator in high efficiency and large capacity by supplying the power of an engine through a differential planetary gear unit to the generator. CONSTITUTION:The power of a main engine is separated through gears 2, 3 into two systems, one is input through a transmission shaft 4 to a differential planetary gear unit 5 as it is, and the other drives a sub generator 6 through the gear 3. A thyristor controller 7 controls the output of the generator 6 in response to the rotating speed of the engine to be supplied to a geared motor 8, and the output is input through a gear 9 to the unit 5. The power again combined by the unit 5 drives a main generator 10 at the predetermined rated rotating speed. Thus, the generation of high efficiency and large capacity is performed bya thyristor or a transistor of the capacity of one divided by severals of the rated generating capacity.

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a power generation device that performs constant frequency power generation using an engine, and more specifically to a device that performs constant frequency power generation using the main engine of a ship or the like. This invention relates to a power generation device that can be compactly stored in a limited space.

[Prior art]

A power generation device in a ship is generally equipped with an auxiliary engine for power generation in addition to a main engine for driving a propulsion device to generate power. However, compared to the main engine, which has a long stroke and rotates at a low speed, this auxiliary engine is small and rotates at high speed, and because it uses high quality A heavy oil, there are problems such as much higher fuel consumption. be. For this reason, it is most efficient and economical if power can be extracted from the main engine, which has excellent fuel efficiency, to generate electricity, and the auxiliary engine for power generation can be operated in emergencies when the main engine cannot operate, or when the engine is berthed. It becomes like this.

However, the rotational speed of the main engine is not constant depending on the ship's operating conditions, but has the peculiarity of constantly changing. Therefore, in order to generate electricity at a constant frequency, the rotational speed of the generator must always be kept at a constant rated rotational speed. We must devise ways to maintain the numbers. Conventionally, in order to obtain this constant rated rotation speed, in the case of small-capacity power generation, an eddy current method, a slip clutch method, a silisk method, etc. have been adopted and put into practical use. However, when it comes to large-capacity power generation such as on large ships, etc., it is generally necessary to use a large-capacity cyrisk method due to efficiency reasons, but in this case, the current does not become a sine wave, and it is used for communication equipment, etc. In addition to the possibility of adverse effects, Cyrisk also has the disadvantage of becoming dramatically more expensive as the capacity increases, as is well known.

In addition, since space on ships is limited, when installing a power generation device like the one above, it is important to make the device as compact as possible so that it does not take up unnecessary space, and also to ensure that the main engine has only one rotation. It is desirable to install it in a stable condition.

[Purpose of the invention]

The purpose of the present invention is to use a small-capacity cyrisk or transistor of about a fraction of the rated power generation capacity when generating constant frequency power using a soil engine with large rotational speed fluctuations such as the main engine of a ship. Therefore, it is an object of the present invention to provide a power generation device that enables high-efficiency, large-capacity power generation, can compactly store the entire device in a narrow space, and can be stably installed against vibrations of the main engine.

[Structure of the invention]

To achieve the above object, the present invention separates the power taken out from the main engine into two systems, one of which is directly input to the differential planetary gear system, and the other which is used for power generation from the highest rotational speed of the main engine to the lowest. The developed electric machine has a capacity obtained by multiplying the main generator capacity by the ratio of the rotation speed minus the rotation speed and the maximum rotation speed, with a slight margin added, and is controlled by the rotation speed signal of the main generator. The system is connected manually to the differential planetary gear device via a geared motor, and the combined output drives the main generator at the rated rotation speed, and the differential planetary gear device and the main power generator are connected manually. The main generator is fixed on a base in series, the developed electric machine is installed on the side thereof, and the geared motor is installed above the main generator.

[Embodiments of the invention]゛ The present invention will be explained below with reference to embodiments shown in the drawings.

FIG. 1 shows an outline of the power generation device of the present invention.

Reference numeral 1 denotes a power take-off shaft (rPTO shaft) that takes out power from the main engine (not shown). The power taken out by the power output shaft 1 is separated into two series via a gear 29, and one is directly inputted via a transmission shaft 4 to a differential planetary gear device 5 having a configuration to be described later. On the other hand, the developed electric machine 6 is driven through the gear 3, and the output of the developed electric machine 6 is controlled by the xyrisk control device 7 (or transistor control device), so that the geared motor 80 rotation speed corresponds to the rotation speed of the main engine. The output is transmitted to the differential planetary gear device 5 via the gear 9.
Enter.

The power combined again by the differential planetary gear system 5 drives the main generator lυ at a constant rated rotation speed.

The above-mentioned developed electric machine 6. Cyrisk control device7. The capacity of the guard moke 8 is the capacity of the main generator 10 multiplied by the ratio of the maximum rotation speed minus the minimum rotation speed of the main engine used for power generation and the maximum rotation speed, with a slight margin added. It has a large capacity. The power generated by the main generator 10 is output to the load-side conducting wire 15.

The differential planetary gear device 5 has a carrier 11 that supports the planetary gears 12 on the input side to input the power of the transmission shaft 4, and a sun gear 13 meshing with the planetary gears 12 on the output side. The generator 10 is driven. The annular gear 14 disposed outside the planetary gear 12 has an internal gear 14i and an external gear 14o on both inside and outside surfaces, respectively.
i is the above '1 jit Hoshiyama official 12 and Ui, E are combined, and 5: external gear 14o is the gear 9 on the output side of the gear 8.
The output of the Gyatmoke 8 is manually generated. 18 is a brake for the geared motor 8.

Next, a case in which power generation is performed using the above-mentioned device will be described.

Now, in FIG. 2, the rotation speed of the sun gear 13 that outputs the combined power in the differential planetary gear device 5 is N, and the number of teeth is Z.
s, N is a constant value as the rated rotation speed of the main generator 10. Further, if the rotation speed of the annular gear 14 that inputs the power of the geared motor 8 is Nx, the number of teeth is Za, and the rotation speed of the transmission shaft 4 (power output shaft 1) that is input to the carrier 11 is No, then the sun gear The rated rotational speed N of No. 13 is given by the following formula. , (however, Nx is opposite in direction to N and No) N=No (Za +Zs)/Zs +Nx -Za/Zs j Here, Za/Zs-r is the number of rotations at which the annular gear 14 should rotate from the above equation. Subtracting Nx, we get Nx = l/r (N-No (r+1))--■. In other words, it is sufficient to control the rotation of the geared motor 8 so that the rotation of the annular gear 14 satisfies the above equation 0.

As an example, in order to facilitate understanding of the invention, we will briefly estimate the a*la of the main generator, geared motor, and silisk control device.

Assuming that the efficiency of the gear is 100% and setting the speed of the geared motor to 0 when the main engine is at its maximum speed, the rated power generation capacity of the main generator 10 is 110%.
00k and its main generator 10 has 6 poles, then N =
120 Or, p, m, and the above r-3. If the speed range used by the main engine is 25%, and the rotation speed number of the power take-off shaft 1 from the main engine is 290r, p, m, then since the speed change range is 25%, the lower limit speed NO of the power take-off shaft 1 is ″
is No' = 290XO, 75 = 217.5r.

p, m.

Therefore, according to the above formula 0, the lower limit of the rotation speed range in which the annular gear 14 should be controlled is Nx = 1/3 ・ (1
200-290X4)=13. 3r, p, m.

Also, the upper limit Nx" is Nx' -1/3・(1200217,5x4) =
11 Or, p, m.

becomes.

In this way, the ring gear 14 is 13.3 to 1.1 Or, p,
If the main generator 10 is controlled within the rotation speed range of 120 Or, p, m, which is the rated rotation, the main generator 10 is always maintained at the rated rotation speed of 120 Or, p, m.

Further, if the maximum required power of the annular gear 14 is w kw, the maximum rotational speed is 11 Or, p, m, so w=rX110/1200X1000 kw275kw.

Therefore, the capacity of the developed electric machine 6 is 275 kW. In other words, the power generation capacity of the main power generation vi10 is 11000k.
In this case, according to the above power generation method, a generator with a capacity of approximately 275 kW would theoretically be needed.6. Cyrisk control device7. This means that the geared motor 8 and the differential planetary gear device 5 may be added.

Therefore, in order to generate 11,000k as in the conventional method, it is not necessary to equip a large-capacity cyrisk corresponding to that 1,000kiv, and it is only necessary to use a cyrisk with a capacity of about a fraction of that, making it much cheaper. It can be used as a power generating device.

Further, in the present invention, as described above, the capacity of the si-risk control device 7 may be small, so a transistor control device may be used instead of the si-risk control device 7.

3 to 5 show an example of the layout of the main equipment of the above-mentioned power generation device.

In FIGS. 3 to 5, G is a power generation device of the present invention constituted by each of the above-mentioned devices. This power generation device G has the differential planetary gear device 5 and the main generator 10 arranged in series on the upper surface of one side of the base plate 30, and the developed electrical machine 6 on the upper surface of the other side. are arranged in parallel, and furthermore, a geared motor 8 is fixed to the upper part of the main generator 10. An input shaft 1a protrudes from the front end of the differential planetary gear device 5 laid out in this way, and power is input to this input shaft 1a from the power output shaft 1 of the main engine.

Part of the power input to the input shaft 1a is separated by the speed increasing device 20 installed in parallel on the side of the differential planetary gear device 5, and the separated power is sent to the developed electric machine 6 via the coupling 22. It is supposed to be entered. On the other hand, the differential planet t
A gear corresponding to the gear 9 that meshes with the external gear 14o of the internally geared float 14 shown in FIG. --)'Motor 8
It is designed to input the output of

The output shaft at the rear end of the differential M star gear device 5 that inputs power in this way is connected to the main power generator talO via a coupling 21.

Reference numeral 24 denotes an oil pump that circulates lubricating oil to the differential planetary gear device 5 and the like, and the lubricating oil is cooled by an oil cooler 25 during the circulation. 26 is a detector for detecting 100 rotations of the main generator, and 18 is a brake for the geared motor 8.

In the power generation device G described above, the differential planetary gear device 5 and the main generator 10 are fixed in series on the base plate 30, and the development power generator [6] is installed in parallel on the side thereof, so that a narrow space is required. It is extremely compact and stable against vibrations caused by the main engine, etc. In other words, the developed electric machine 6 is generally larger in volume and weight than the geared motor 8 installed above the main power generator ta 10, so if it is stacked on top like the geared motor 8, it will cover a relatively wide floor area but will not cover the ceiling. Although it becomes difficult to store the products in a low space, the above-mentioned arrangement allows for storage without interfering with the ceiling. In addition, development electric machine 6
is heavy, so if it is stacked on top of the main engine, vibrations from the main engine etc. will increase the vibration and make the installation unstable.
Stabilization can be achieved by directly providing the base plate 30'' in parallel with the base plate 30''.

In addition, in the above-mentioned embodiment, the case where the main engine installed in a ship is used was explained, but the present invention is not limited to ships, but is applicable to devices equipped with a similar main engine with variable rotation speed. It can also be applied effectively.

〔Effect of the invention〕

As described above, the present invention separates the power extracted from the main engine into two systems, one of which is inputted as is to the differential planetary gear system, and the other is used to generate power by changing the maximum to minimum rotation speed of the main engine. A developed electric machine having a capacity obtained by multiplying the main generator capacity by the ratio of the subtracted rotational speed and the maximum rotational speed, with a slight margin added, passes through the Cyrisk or transistor control device, and the geared motor to the differential planetary gear device. and the combined output drives the main generator at the rated rotation speed, and the differential planetary gear device and the main generator are fixed in series on a base plate, and the side part thereof is connected to the main generator. Since the developed electric machines were installed in parallel and the geared motor was installed above the main generator, it was only necessary to install a syrisk or transistor control device to control the power of one of the two separated trains, and therefore the rated power generation capacity could be reduced. It enables large-capacity constant-frequency power generation with a small capacity of only a fraction of that of a conventional electric power generator.

Furthermore, since the SIRISK device is applied only to the speed control of the geared motor, the power generated by the main generator becomes a perfect sine wave, eliminating interference with communication equipment and the like.

Additionally, due to the layout of the main equipment mentioned above, the entire device can be compactly stored in a narrow space with a particularly low ceiling, and it can be installed stably against the vibrations of the main engine.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a power generation device according to an embodiment of the present invention, and FIG.
The figure is an explanatory view of the differential planetary gear device portion of the same device, FIG. 3 is a front view showing the layout of the power generating device, FIG. 4 is a plan view thereof, and FIG. 5 is a side view thereof. G... Generator, 1... Power take-off shaft, 1a...
・Input shaft, 5...Differential planetary gear device, 6...Developed electric machine, 7...Sirisk control device (or transistor control device) 8...Gardmoke, 10...
Main generator. Agent Patent Attorney Makoto Ogawa - Patent Attorney Ken Noguchi Teru Patent Attorney Kazuhiko Saishita Figure 1 Figure 2 Figure 4 Figure 5 Proceedings Amendment Belt November 1980 611 Commissioner of the Japan Patent Office 1, Indication of Case Showa 1959 Patent Application No. 1145052, Name of the invention Power generation device3, Relationship with the case of the person making the amendment Patent applicant address (residence) Name Takashi Takahashi 4, Agent address 〒] 05 Tokyo Tech; Toto; Pelican Building, Ogawa & Noguchi International Patent Office, 3-3-3 Nishi-Shinbashi, Ward (Telephone 431)
-5361) 7. Contents of amendment (1) The claims are amended as shown in the attached sheet. (2) "Xyristor" on page 3, lines 13-14 and page 10, lines 7 and 8 of the specification are respectively referred to as "Xyrisk control device"
and correct it. (3) "Transistor" on page 4, lines 5-6 of the specification is replaced with "
"Transistor control device". (4) Specification page 4 line 20 to page 5 line 1, page 5 6-7
line, page 6, line 1, line 7-8, page 7, line 2, line 3, line 4-5
Line 12, page 8, line 5, line 9, line 11, page 10, line 3, page 11, line 2, lines 15-16, page 12, line 4, line 13, line 14, page 13, line 18 ~ line 19, page 14 line 4, 10
"Gard motor" on page 15, line 7, respectively.
motor”. (Attachment) Claims: The power taken out from the main engine is separated into two lines, one of which is input as is to the differential M Hoshiyama Higashi device, and the other power is the main engine used for power generation between the highest and lowest rotational speeds. The capacity is obtained by multiplying the main generator capacity by the ratio of the rotational speed minus the maximum rotational speed and the above-mentioned maximum rotational speed, plus a slight margin. input to the differential planetary gear device via
The combined output drives the main generator at the rated rotational speed, and the differential planetary gear device and the main generator are fixed in series on the base Mj, and the developed one is attached to the side thereof. A photoelectric device characterized in that electric machines are installed side by side and the above-mentioned Tenjimon is installed in a part of the main generator.

Claims (1)

[Claims] The power extracted from the main engine is separated into two systems, one is inputted as is to the differential planetary gear system, and the other is the rotation speed obtained by subtracting the minimum rotation speed from the maximum rotation speed of the main engine used for power generation, and the above maximum rotation speed. A developed electric machine having a capacity obtained by multiplying the capacity of the main generator by the ratio of the number to the capacity of the main generator with a slight margin added, the input is combined with the differential planetary gear device via the Cyrisk or transistor control device, the geared motor, and the combined output is The main generator is driven at the rated rotation speed, and the differential planetary gear device and the main generator are fixed in series on a base, and the developed electric machine is installed in parallel on the r part thereof, Further, a power generation device characterized in that the guard motor is installed above the main generator.