JPS60237125A - Gas-turbine driving working machine - Google Patents

Abstract

PURPOSE:To reduce the dimension of a ventilating fan by installing the ventilating fan at the position over the heat generation part of a gas turbine on the edge part on the counter air inlet side of a cover member which surrounds the gas turbine and a working machine. CONSTITUTION:An air inlet 11 is formed at one edge 4a of a cover member 4 which surrounds a gas turbine 2 and the working machine 3 such as generator, and communicates to a unit accommodation chamber 10 through communication ports 31 and 33. An oil cooler 5 is installed at a proper position of the communication port 33 so as to cross air stream, and a ventilating fan 6 is installed on the other side 4b of the cover member 4 and at the position over the heat generating part such as the combustor 22 and the exhaust cylinder 23 of the gas turbine 2. Therefore, the temperature rise of the ventilating wind in the cover member 4 by the heat generated in the heat generation part can be suppressed, and the dimension of the ventilating fan can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides a system in which a work machine unit, which is constituted by functionally connecting a cast turbine and a work machine such as a generator, is entirely surrounded by a cover member. This invention relates to a so-called fully enclosed gas turbine-driven working machine.

(Prior art) As the prior art in the technical field to which the present invention pertains, for example, aIXS,
There is a Kasturbine-generated %L device.

However, this Kasturbin originating s@ta is as follows (A-
There are problems as shown in /) and (A-, l).

(A-/) Because the heat generating part such as the combustor or exhaust muffler of the cast turbine is located inside the cover part U and upstream of the ventilation flow, the inside of the cover member tends to become hot and the system Therefore, in order to increase the amount of ventilation air, the capacity of the ventilation fan must be increased, resulting in an increase in cost and an increase in the size of the device.

(A-) Since a dedicated cooling fan is provided for the oil cooler placed inside the cover member, the number of parts increases, leading to an increase in cost.

(Problems to be solved by the invention) The present invention solves the problems of (A-/) and (
This was done in an attempt to solve or improve the problem in A-2). (n-/) Reduced the capacity of the ventilation fan to reduce costs and make the device an IJX type, and (B-2) Installed a dedicated oil cooler. The purpose of this is to reduce costs by eliminating the need for cooling fans.

c) Means for Solving Problems) The present invention, as a means for achieving the objects (B-/) and (B-2) above, provides (C-/) a cover member on the side opposite to the air inlet formation side. A ventilation fan is installed at the end and above the heat generating part of the gas turbine so as to be able to exhaust the air inside the cover member to the outside. It is installed at the position of the communication port that communicates the passage and the cover chamber of the cover member in which the ventilation fan is provided, and across the airflow flowing through the communication port.

(Function) In the present invention, (D-/) The above means (C-/) allows the ventilation air flowing through the cover member to be heated by the heat released from the heat generating part of the gas turbine. (D-2) By means of (c-2) above, when the oil in the oil cooler is effectively cooled by the air flow circulated by the ventilation fan, the effect of 1 is obtained. can get.

(Embodiments) Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

In the drawing, the symbol / is a gas turbine-driven power generation device, and the generator 1s device / is installed on the same base by coaxially connecting the output shaft of the gas turbine 2 and the input shaft of the electric motor 3. The working machine unit is completely surrounded by a cover member t, which will be described in detail later.

The cover member ≠ includes a front plate lI/ that faces the outer end of the gas turbine 2 of the work equipment unit g, a rear face plate 112 that faces the outer end of the first machine 3, and both sides of the work equipment unit. A cover body 3 is integrally formed into a rectangular cylinder shape with an open bottom by a pair of side plates ≠ 3 located above and a ceiling plate ≠≠ located above the working machine unit; and the cover body 3; 5≠
A cylindrical protruding cover part SS is attached to the outer surface of the front plate 11/ so as to surround the opening formed in the front plate 11/.

A partition plate ttS is attached to the inside of the cover body 51I at an appropriate distance from the ceiling plate <2≠ of the cover body 5t, and a filter chamber is formed between the partition plate I15 and the ceiling plate lI≠. Space /2 is an air passageway communicating with the air rush inlet // formed on the rear plate t2 side. This partition plate≠5 has communication ports 3@, that is, a first communication port 3/ which is located near the sudden air inlet // and has a large opening area, and a first communication port 3/ which is located near the end opposite to the air inlet //. In addition, a second communication port 32 and a third communication port 33 having a small opening area are formed, and the air passage/
-2 and the unit housing 1 located below the partition plate l15
0 and 0 can communicate with each other through the communication ports 3/, 32, and 33.

This cover member ≠ is inserted from the upper side so as to cover the working machine unit area with the heat generating parts such as the combustor 2.2, exhaust @, 23 of the gas turbine 2 entered into the protruding cover part 55. Installed. In this state, the cover body S
Each communication hole 3/, 3, of the partition plate ttS provided on the top of t.
33, the first communication port 3/ is located above the work g&3, and the second communication port 3/33 is located above the cast turbine 2. Each of these communication ports 3
/.

32. Of 33, the first communication port 3/ and the third communication port 33 serve as the ventilation air flow ports from the nitrogen vent #15/2 side to the unit housing ¥70 side, and the respective openings Although it is left as it is, the first communication port 32 transfers a part of the air in the air passage/2 to the gas turbine! It serves as an intake port for taking in air for combustion into the side, and is connected to the intake port of the gas turbine 2 via the intake duct Sg.
/ is communicated with.

Further, an oil cooler 5 is attached to the third communication port 33 portion so as to cross the air ffff (ventilation flow) flowing from the air passage /2 to the unit storage chamber 10 side through the third communication port 33. It is being

- Outer end surface s5Φ of the protruding cover part S5 where the cover member ≠
An exhaust siren surf, which is connected to the exhaust pipe 23 of the gas turbine 2, is fastened and fixed to the exhaust pipe 23. Further, an air outlet 4Z7 for discharging air from inside the unit storage chamber 10 to the outside is opened in the upper wall surface of the protruding cover portion 5s. A ventilation fan 6 is attached to this air outlet≠7. Furthermore, a connection @5 for connecting the exhaust pipe and 27 is attached to the outside of the ventilation fan B so as to connect the outside of the ventilation fan B.

Note that the symbol /S in the figure is a sound absorbing plate.

In the power generation device/ that has been subjected to <tstIgJ as described above,
The ventilation fan 6 is operated simultaneously with the start of operation of any working machine unit, and the inside of the unit storage chamber 10 is dynamically ventilated.

That is, when the ventilation fan 6 rotates, the suction force of the ventilation fan 6 draws outside air A (in the case of an indoor-installed generator fsgi device/, outside air) from the air inlet//; In the case of , the inner space 9.) is the air passage/,
! is sucked inside. Of the air A sucked into this air passage /2, a part of it is first introduced into the unit storage chamber 10 from the first communication c73/, and then
The air is circulated through the ventilation fan B to the exhaust pipe 27 side through the opening ≠ B while ventilating the inside of the unit housing chamber 70 .

On the other hand, some of the other air that was not introduced from the first communication port 3/ to the unit housing MIO side is introduced from the first communication port 32 to the intake port 2/ side of the gas turbine 2; The air A crosses the oil cooler 5 from the third communication port 33 and passes through the end of the unit storage chamber IO to the exhaust pipe, 27.
It is distributed to the side. When the ventilation air flowing through the third communication port 33 passes through the oil cooler S, a swallow exchange is performed between the ventilation air A and the oil in the oil cooler j. Oil cooler S is supplied with fresh air (in other words, relatively cold air that has not been warmed by heat radiation from the gas turbine 2 side) that is introduced sequentially from the air inlet // side, making oil cooling more effective. It will be carried out accordingly. That is, in this embodiment, even if the oil cooler j is not provided with a dedicated cooling fan, the ventilation air distributed by the ventilation fan B acts as oil cooling air, and the oil cooling effect in the oil cooler 5 is maintained at a high level. be done.

Also, as in this embodiment, the exchange fan 6 is used as a gas turbine with the highest amount of heat dissipation! The combustor! ! Alternatively, when it is provided above a heat generating part such as the exhaust pipe 23, it is possible to suppress as much as possible the heating of the air in the unit accommodation M10 due to the heat from the heat generating part. Therefore, compared to the case of a power generator with a PT construction, where the air inside the unit is easily warmed by the heat from the gas turbine, the room temperature inside the unit increases less, and the ventilation air volume is reduced accordingly. It is often possible to increase the capacity and downsize the ventilation fan.

In addition, the power generation device of this embodiment has an exhaust pipe 2 on the connection pipe sB.
By installing 7, you can install figfJ indoors! It can be applied both as a power generator and as an outdoor power generator by removing the exhaust stack core (in other words, it can be used as an outdoor power generator without changing the basic specifications of the power generator). can be applied as an indoor type generator or an outdoor type generator).

(Effects of the Invention) As is already clear from the descriptions of the above-mentioned sections of means for solving problems, operations, and embodiments, the gas turbine-driven working machine of the present invention has the following features: (E-/) inside the cover member. Since the temperature rise of the circulating ventilation air is suppressed as much as possible, it is possible to reduce the ventilation air volume, and by increasing the capacity of the ventilation fan, the cost and size of the equipment can be reduced, (E-2 ) Since the ventilation fan can act as a cooling fan for the oil cooler, there is no need to provide a dedicated cooling fan for the oil cooler, which has the effect of reducing the number of parts and reducing the cost of the device.

[Brief explanation of drawings]

The drawing is a longitudinal cross-sectional view of a main part of a gas turbine-driven power generation device according to an embodiment of the present invention. λ...Gas turbine 3...Work equipment t...Cover member 6...Ventilation fan...Work equipment unit 10...Unit housing cloth /l...Air inlet/2...Air passage 22...Combustor 23...Exhaust stack Applicant: Yanmar Diesel Co., Ltd. Agent Patent attorney Harahe Hiroshi Taihama

Claims (1)

[Scope of Claims] / A work equipment unit (2) configured by functionally connecting a gas turbine and a work equipment (3) such as a generator,
A gas turbine-driven working machine that is entirely surrounded by a cover member (ri) whose internal chamber is a unit storage chamber (10), wherein the upper part of the cover member (II) includes:
A nine air passageway (/2) communicating with the air inlet (//) provided on the -gasket (tφ) side of the cover member ('I) is formed to connect the air passageway (/2) and the unit housing. M (10) are communicated with each other through the communication ports (3/) and (33), and an oil cooler (5) is placed in the appropriate position of the communication ports (3/) and (33). 3/). C33) so as to cross the circulating air flow, and furthermore, on the other end 1b) side of the cover member 1), heat generation from the combustor (2, 2) of the gas turbine (2), exhaust pipe (23), etc. A gas turbine-driven working machine, characterized in that a ventilation fan (B) is installed above the unit storage chamber (C10) so as to exhaust the air inside the unit housing chamber (C10) to the outside.