JP2001304776A - Heat exchanger device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the efficiency of a heat exchanger having a rotor cooling air cooler of a gas turbine, and a fuel heater of the gas turbine. SOLUTION: A tube 14 for cooling air is provided between side plates 11 and 11 of a wind tunnel 13 so that it can travel relatively to the wind tunnel 13, and both the ends of the tube 14 for cooling air are connected to a cooled air inlet header 15 and a cooled air outlet header 16. A tube 34 for fuel is provided between the side plates 31 and 31 of a wind tunnel 33 so that it can travel relatively to the wind tunnel 33, and both the ends of the tube 34 for fuel are connected to a fuel inlet header 35 and a fuel outlet header 36. Slide plates 20 and 21 that are fixed to the fuel inlet header 35 and the cooled air outlet header 16 are arranged slidably at the side plate 11, and slide plates 40 and 41 that are fixed to the fuel inlet header 35 and the fuel outlet header 36 are arranged slidably at the side plate 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchange apparatus for heating a second fluid with air serving as a heat medium for cooling a first fluid.

[0002]

2. Description of the Related Art In a gas turbine, high-pressure air in a vehicle compartment is extracted and cooled by an air-cooled rotor cooling air cooler, and then the cooled high-pressure air is cooled to a gas turbine rotor and moving and stationary blades. It is used as cooling air.

Conventionally, air as a heat medium used for cooling the cooling air in the rotor cooling air cooler has been exhausted immediately after cooling the cooling air.
However, this is disadvantageous because the efficiency of the gas turbine is reduced, and therefore, the efficiency of the gas turbine is improved by utilizing the waste heat of the air after cooling the cooling air for heating the fuel of the gas turbine. Was thought.

Japanese Patent Application Laid-Open No. 8-284689 discloses an example of a heat exchange device in which waste heat of air as a heat medium after cooling cooling air is used for heating fuel. In the heat exchange device disclosed in this publication, a fuel heater unit is stacked above a rotor cooling air cooler unit. The rotor cooling air cooler unit has side plates which are open in the upper, lower, left and right directions and are opposed to each other and installed in parallel, and a number of cooling air tubes through which the rotor cooling air flows between the side plates extend in a direction in which the side plates extend. And one end of the cooling air tube is connected to a cooling air inlet header installed on the outside of the side plate on the extension thereof, and the other end of the cooling air tube is mounted on the extension thereof. And is connected to a cooling air outlet header installed outside the side plate. Further, the rotor cooling air cooler unit includes a fan below the side plates, and the operation of the fan causes an upward flow of air between the side plates, and the air causes the cooling air flowing through the cooling air tube to flow. Is indirectly cooled, while the air flowing between the side plates is heated.

[0005] The fuel heater unit, which is installed on the rotor cooling air cooler unit, has the same configuration as the rotor cooling air cooler unit. In other words, the fuel heater unit has side plates which are open in the upper, lower, left and right directions and are installed in parallel to face each other, and a number of fuel tubes through which fuel flows between the side plates are horizontally arranged in the direction in which the side plates extend. One end of the fuel tube is connected to a fuel inlet header provided on the extension thereof and outside the side plate, and the other end of the fuel tube is provided on the extension and outside the side plate. Connected to the fuel outlet header installed at

[0006] Each side plate of the fuel heater unit is disposed on an extension of a corresponding side plate of the rotor cooling air cooler unit, so that the air blown by the fan is supplied to the rotor cooling air cooler unit. After rising between the side plates, it flows between the side plates of the fuel heater unit and rises. As described above, the air flowing between the side plates of the rotor cooling air cooler unit is heated by cooling the cooling air of the cooling air tubes, and the heated air rises between the side plates of the fuel heater unit. Therefore, the fuel flowing through the fuel tube is indirectly heated by the air.

The cooling air tube of the rotor cooling air cooler unit and the fuel tube of the fuel heater unit thermally expand due to the heat of the fluid (ie, cooling air or fuel) flowing therein and extend in the axial direction. If these tubes are immovably fixed, they may be deformed or damaged due to thermal stress. To prevent this, these tubes are not fixed in the rotor cooling air cooler unit or fuel heater unit, It is movably supported in the direction.

[0008] Therefore, the cooling air tube is axially movable relative to the side plate of the rotor cooling air cooler unit, and the fuel tube is axially movable relative to the side plate of the fuel heater unit. It is movable.

[0009]

However, when the cooling air tube extends due to thermal expansion, the air inlet header or the air outlet header connected to the cooling air tube is pushed outward, and as a result, these headers and the air outlet header are pushed out. A gap is formed between the side plate of the rotor cooling air cooler unit and the air flowing between the side plates leaks out of the gap to serve as a heating medium for heating the fuel in the fuel heater unit. The amount of air decreases,
There was a problem that the heating efficiency deteriorated.

The same applies to the fuel heater unit. When the fuel tube extends due to thermal expansion, the fuel inlet header or the fuel outlet header connected to the fuel tube is pushed outward, and as a result, these headers and the fuel A gap is formed between the side plate of the heater unit and air flowing between the side plates leaks from the gap to the outside, and the amount of air as a heat medium provided for heating the fuel in the fuel heater unit is reduced. This causes a problem that the heating efficiency decreases.

[0011] Further, since the temperature condition is different between the cooling air tube and the fuel tube, the elongation dimensions upon thermal expansion are different. Therefore, each of the headers of the rotor cooling air cooler unit and the fuel heater unit are different. A gap may be formed between each header, and air may leak from this gap. Therefore, the amount of air serving as a heating medium for heating the fuel in the fuel heater unit decreases, and the heating efficiency deteriorates. There were things.

The present invention has been made in view of such problems of the conventional technology, and an object of the present invention is to solve the problem that the air heated by cooling the first fluid is wasted. In other words, it is possible to improve the efficiency of the heat exchange device by allowing the second fluid to be used for heating.

[0013]

The present invention has the following features to attain the object mentioned above. The heat exchange device according to the present invention includes a wind tunnel in which air as a heat medium flows in one direction between side walls installed opposite to each other, and a flow of air along a direction in which the side walls extend between the side walls of the wind tunnel. A first fluid pipe which is disposed in a direction intersecting the direction and through which a first fluid indirectly cooled by air flowing through the wind tunnel flows, and which is installed so as to be relatively movable in the pipe axis direction with respect to the wind tunnel. A first fluid passage disposed between the air passage and a side wall of the wind tunnel, in a direction of air flow downstream of the first fluid passage, substantially in parallel with the first fluid passage, and heating the first fluid flowing through the first conduit by indirect cooling. A second fluid passage in which a second fluid that is indirectly heated by air flowing through the wind tunnel is provided, the second fluid passage being installed to be relatively movable in the tube axis direction with respect to the wind tunnel, The first channel is disposed on a side of the wind tunnel on the extension of the path and is connected to the first channel. A first header through which a body flows, a second header disposed on a side of the wind tunnel on an extension of the second conduit and connected to the second conduit and through which the second fluid flows; Leak prevention means capable of preventing air in the wind tunnel from leaking between the first header or the second header and the side wall of the wind tunnel even when the path or the second conduit moves relative to the wind tunnel; , And is provided.

In this heat exchange device, first, the first fluid flowing through the first conduit is indirectly cooled by the air flowing through the wind tunnel. At this time, the air flowing through the wind tunnel is heated, and the heated air flows through the second conduit.
Heat the fluid.

The first conduit and the second conduit are expanded by the heat of the fluid flowing therein and extend in the axial direction of the pipe. As a result, the distance between the first header or the second header and the side wall of the wind tunnel is increased. Is changed, the space between them is closed by the leak prevention means, and the air flowing in the wind tunnel does not leak out from here. Therefore, since the air as the heat medium can be used without waste, the efficiency of the heat exchange device is improved.

In the present invention, the leakage preventing means includes a first slide plate fixed to one of the first header and the side wall of the wind tunnel and slidable with respect to the other; A second slide plate fixed to one of the side walls and slidable with respect to the other.

In the present invention, the leak preventing means may include a first telescopic wall which is fixed at both ends to the first header and the side wall of the wind tunnel, and both ends fixed to the second header and the side wall of the wind tunnel. And a stretchable second telescopic wall. As a more specific example of a telescopic wall,
An expansion plate formed in an S-shaped cross section or the like can be given.

In the present invention, it is preferable to include a second leak prevention means capable of preventing air in the wind tunnel from leaking from between the first header and the second header. With this configuration, the first and second pipes extend in the pipe axis direction due to thermal expansion, so that even when the first and second heads relatively move, the gap between the first and second heads is maintained. Since the air is blocked by the second leak prevention means, the air flowing in the wind tunnel does not leak outside from here. Therefore,
Since the air as the heat medium can be used without waste, the efficiency of the heat exchange device is improved.

In the present invention, the second leak preventing means may be constituted by a telescopic wall having both ends fixed to the first header and the second header. A more specific example of the elastic wall is an expansion plate formed in an S-shaped cross section or the like.

In the present invention, the second leak preventing means penetrates the first and second conduits and is slidable with respect to at least one of the first and second conduits. It can be constituted by a closing plate that closes between the attached first header and the second header.

In the present invention, the first fluid flowing through the first conduit is cooling air for cooling a turbine, and
The second fluid flowing through the conduit can be fuel for the turbine. In this way, the efficiency of the turbine is improved. However, the first fluid and the second fluid are not particularly limited to these, and the first fluid and the second fluid may be either liquid or gas.

In the present invention, there may be provided a blowing means for blowing air as a heat medium into the wind tunnel.

[0023]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a heat exchange apparatus according to the present invention will be described below with reference to FIGS.
The embodiments described below are embodiments in which the present invention is applied to a heat exchange device that indirectly heats fuel of a gas turbine with air that indirectly heats rotor cooling air of a gas turbine.

[First Embodiment] First, a first embodiment of a heat exchange apparatus according to the present invention will be described with reference to FIGS. The heat exchange device 1 includes cooling air (hereinafter, referred to as “cooling air”) for cooling a rotor and moving and stationary blades of a gas turbine.
A rotor cooling air cooler unit 10 for cooling the rotor cooling air) and a fuel heater unit 30 for heating the fuel of the gas turbine are provided. The fuel heater unit 30 is stacked on the rotor cooling air cooler unit 10. It has a structure.

The rotor cooling air cooler unit (hereinafter, abbreviated as a cooler unit) 10 is provided with an air tunnel 13 formed of a frame having side plates 11 and 11 which are open in the upper, lower, left and right directions and are installed in parallel to face each other. The wind tunnel 13 is supported by a plurality of legs 19.

The side plates 11, 11 of the wind tunnel 13
Between them, a number of cooling air tubes (first conduits) 14 through which the rotor cooling air (first fluid) flows are installed horizontally along the direction in which the side plates 11 and 11 extend. The cooling air tube 14 is attached to the wind tunnel 13 so that the tube can freely expand in order to prevent deformation or breakage due to thermal expansion. In this embodiment, the cooling air tube 14 has its axial line. Only the substantially central portion in the direction is fixed to the wind tunnel 13 so as to be immovable, but the other portions are attached to the wind tunnel 13 so as to be relatively movable in the axial direction thereof. That is, the cooling air tube 14 is attached to the wind tunnel 13 so that the cooling air tube 14 can freely expand in the direction of extending both ends in the axial direction. Therefore, it can be said that the cooling air tube 14 is relatively movable with respect to the side plates 11 and 11. The cooling air tube 14 is provided with a large number of cooling fins on its outer peripheral surface.

In FIG. 1, the left end of the cooling air tube 14 is connected to a cooling air inlet header 15 arranged on the extension thereof and to the left of the wind tunnel 13, while the right end of the cooling air tube 14 is On its extension, the cooling air outlet header 16 is connected to a cooling air outlet header 16 disposed to the right of the wind tunnel 13, and the cooling air from the cooling air inlet header 15 passes through the cooling air tube 14.
To flow to. Cooling air inlet header 1
5. Each of the cooling air outlet headers 16 has a box shape, and is formed in a size that can be inserted into and removed from the wind tunnel 13. The width dimensions of the headers 15, 16 are the side plates 11, 11.
It is slightly smaller than the distance between them.

The cooler unit 10 has a plurality of electric fans 17 below the wind tunnel 13, and by operating the electric fans 17, the side plates 11, 11 are actuated.
During which an upward flow of air can be generated. This air and the cooling air tube 14
Heat is indirectly exchanged with the rotor cooling air flowing through the side plates 11, and as a result, the rotor cooling air is cooled and the air flowing between the side plates 11, 11 is heated.

On the side surface of the cooling air inlet header 15 corresponding to the side plates 11, 11, the slide plate 2 having substantially the same height as the side plate 11 is provided.
0 and 20 are fixed. Slide plate 20, 2
Numeral 0 has one end fixed to each side surface of the cooling air inlet header 15 by welding or the like, and extends in a direction approaching the side plates 11 with the other end as a free end.

As shown in FIG. 2, the slide plate 2
The other ends of the slide plates 20 and 20 penetrate into the wind tunnel 13, and the outer surfaces of the slide plates 20 and 20 correspond to the side plates 1
They are arranged so as to contact and slide on the inner surfaces of the first and the eleventh. Moreover, the cooling air tube 14 extends in the axial direction due to thermal expansion, and as a result, the cooling air inlet header 15
Slide plate 2, so that the other end of slide plate 20, 20 always slides in contact with side plate 11, 11 even when moves in the direction away from wind tunnel 13.
The lengths of 0 and 20 are set.

Further, slide plates 21 and 21 having the same structure as the slide plate 20 are fixed to the side surfaces of the cooling air outlet header 16 corresponding to the side plates 11 and 11, respectively. Are arranged so that the outer surface of the other end, which is the free end of, abuts and slides on the inner surface of the side plates 11, 11.

As described above, the slide plates 20 and 20 are provided on the cooling air inlet header 15 and the slide plates 21 and 21 are provided on the cooling air outlet header 16, so that the cooling air tube 14 is thermally expanded and its axial direction is increased. As a result, when the cooling air inlet header 15 or the cooling air outlet header 16 moves in a direction away from the wind tunnel 13, each side surface of the cooling air inlet header 15 and the cooling air outlet header 16 and the side plate 11, 1
No air gap is formed between them, and air flowing in the wind tunnel 13 does not leak from this space.

On the other hand, the fuel heater unit 30 is provided with a wind tunnel 33 composed of a frame having side plates 31, 31 which are open in the upper, lower, left and right directions and are opposed to and parallel to each other. It is placed and fixed on the wind tunnel 13. The wind tunnel 33 and the wind tunnel 13 have the same shape in plan view and the same size in plan view, and the side plates 31, 31 of the fuel heater unit 30 are disposed on extensions of the side plates 11, 11 of the cooler unit 10. I have.

The side plates 31, 31 of the wind tunnel 33
Between them, a number of fuel tubes (second conduits) 34 through which the fuel (second fluid) of the gas turbine flows are installed horizontally along the direction in which the side plates 31 and 31 extend. In order to prevent the fuel tube 34 from being deformed or damaged by thermal expansion, the fuel tube 34 is attached to the wind tunnel 33 so that it can freely expand in heat. In this embodiment, the fuel tube 34 is arranged in the axial direction thereof. Although only the substantially central portion is immovably fixed to the wind tunnel 33, the other portions are attached to the wind tunnel 33 so as to be relatively movable in the axial direction thereof. That is, the fuel tube 34 is attached to the wind tunnel 33 so that the fuel tube 34 can freely expand in the direction of extending both ends in the axial direction. Therefore, it can be said that the fuel tube 34 is relatively movable with respect to the side plates 31, 31. The fuel tube 34 is provided with a number of cooling fins on its outer peripheral surface.

In FIG. 1, the right end of the fuel tube 34 is connected to a fuel inlet header 35 located on the extension thereof and to the right of the wind tunnel 33.
The left end of 4 is connected to a fuel outlet header 36 disposed on the extension thereof and to the left of the wind tunnel 33, and fuel flows from the fuel inlet header 35 through the fuel tube 34 to the fuel outlet header 36. It is flowing. That is,
In this embodiment, the direction in which the fuel flows in the fuel tube 34 and the direction in which the rotor cooling air flows in the cooling air tube 14 are opposite.

Fuel inlet header 35, fuel outlet header 36
Are box-shaped, and are formed to have a size that can be inserted into and removed from the wind tunnel 33. The width of the headers 35, 36 is slightly smaller than the distance between the side plates 31, 31. .

Side plate 1 of cooler unit 10
The air that has risen between 1 and 11 flows in through the lower opening of the wind tunnel 33 of the fuel heater unit 30, rises between the side plates 31 and 31, and is discharged outside through the upper opening of the wind tunnel 33. As described above, since the air flowing through the wind tunnel 13 in the cooler unit 10 is heated by heat exchange with the rotor cooling air, the heated air flows into the wind tunnel 33 of the fuel heater unit 30.
As a result, heat is indirectly exchanged between the air flowing between the side plates 31 and 31 and the fuel flowing through the fuel tube 34, and as a result, the fuel is heated and the air flowing between the side plates 31 and 31 is heated. Is cooled.

On the side surface of the fuel outlet header 36 corresponding to the side plates 31, 31, the side plate 31 is provided.
Slide plates 40, 4 having approximately the same height as
0 is fixed. The slide plates 40, 40
One end is fixed to each side surface of the fuel outlet header 36 by welding or the like, and the other end is a free end and extends in a direction approaching the side plates 31, 31.

The other ends of the slide plates 40, 40 enter the wind tunnel 33, and are arranged so that the outer surfaces of the respective slide plates 40, 40 abut against the inner surfaces of the side plates 31, 31 to slide. . Moreover, even when the fuel tube 34 extends in the axial direction due to thermal expansion, as a result, even when the fuel outlet header 36 moves in a direction away from the wind tunnel 33, the other ends of the slide plates 40, 40 always remain on the side plate. The lengths of the slide plates 40, 40 are set so as to abut against the 31, 31.

The slide plate 4 having the same structure as the slide plate 40 is also provided on the side surface of the fuel inlet header 35 corresponding to the side plates 31, 31.
1 and 41 are fixed, and the slide plate 4
The outer surfaces of the other ends, which are the free ends of the first and the first plates 41, are arranged so as to abut on the inner surfaces of the side plates 31.

As described above, since the slide plates 41, 41 are provided on the fuel inlet header 35 and the slide plates 40, 40 are provided on the fuel outlet header 36, the fuel tube 34 extends in the axial direction due to thermal expansion. As a result, the fuel inlet header 35 or the fuel outlet header 36
When the vehicle moves in a direction away from the wind tunnel 33, no gap is formed between each side surface of the fuel inlet header 35 and the fuel outlet header 36 and the side plates 31, 31.
The air flowing through the wind tunnel 33 does not leak from here.

The cooling air inlet header 15 of the cooler unit 10 and the fuel outlet header 36 of the fuel heater unit 30 are connected by an expansion plate (extendable wall) 50 having the same width as these. The expansion plate 50 has a substantially S-shaped cross section and is elastically deformable so that the expansion plate 50 can be expanded and contracted. Wind tunnel 3 at 36
3 is fixed to a surface facing the same. Since the space between the cooling air inlet header 15 and the fuel outlet header 36 is closed by the expansion plate 50, the cooling unit 10
The air that has risen inside the wind tunnel 13 can be prevented from leaking from here. The reason why the cooling air inlet header 15 and the fuel outlet header 36 are connected by the expansion plate 50 is that the cooling air tube 14 and the fuel tube 34 have different temperature conditions, and therefore these tubes 14 and 34 are axially expanded by thermal expansion. This is because the extending dimensions are different, and the distance between the cooling air inlet header 15 and the fuel outlet header 36 is not constant.

The cooling air outlet header 16 of the cooler unit 10 and the fuel inlet header 35 of the fuel heater unit 30
Are connected by an expansion plate (expandable wall) 51 having the same configuration as that of the expansion plate 50. The expansion plate 51 closes the space between the cooling air outlet header 16 and the fuel inlet header 35, and The air that has risen in the wind tunnel 13 of the unit 10 can be prevented from leaking from here.

In the heat exchanger configured as described above, pressurized and heated air extracted from a compressor (not shown) or pressurized and heated extracted from a compression stage of a gas turbine (not shown) The cooled air or the like (since the air becomes rotor cooling air by being cooled, is referred to as rotor cooling air in the following description) flows into the cooling air inlet header 15 of the cooler unit 10 via a pipe (not shown). The cooling air flows from the cooling air inlet header 15 through the cooling air tube 14 to the cooling air outlet header 16, in which the air flowing through the wind tunnel 13 indirectly cools the rotor cooling air. Air is supplied from a cooling air outlet header 16 via a pipe (not shown) to a gas turbine as rotor cooling air for cooling a rotor or the like of the gas turbine. It is supplied. Here, the air flowing in the wind tunnel 13 is heated by heat exchange with the rotor cooling air, and the heated air flows into the wind tunnel 33 of the fuel heater unit 30.

On the other hand, the fuel of the gas turbine flows into the fuel inlet header 35 of the fuel heater unit 30 through a pipe (not shown), flows from the fuel inlet header 35 through the fuel tube 34 to the fuel outlet header 36, At this time, the fuel is indirectly heated by the air flowing through the wind tunnel 33,
The heated fuel is supplied as fuel for the gas turbine from a fuel outlet header 36 via a pipe (not shown). The air flowing through the wind tunnel 33 is discharged from the upper opening of the wind tunnel 33 to the outside.

In this heat exchange apparatus, as described above, even if the cooling air tube 14 or the fuel tube 34 extends in the axial direction due to thermal expansion, each slide plate 2O, 21 is connected to each side plate. 11 and the cooling air inlet header 15 and the cooling air outlet header 16, each slide plate 40 and 41 closes the space between each side plate 31 and the fuel inlet header 35 and the fuel outlet header 36, and the expansion plates 50 and 51 blocks the space between the cooling air inlet header 15 and the fuel outlet header 36 and the space between the cooling air outlet header 16 and the fuel inlet header 35, so that the air flowing through the wind tunnels 13 and 33 leaks out of the gaps. Almost all of the air blown by the electric fan 17 is cooled by the cooler unit. Cooling and the rotor cooling air flowing Tsu bets 10, would be subjected to a heating of the fuel flowing through the fuel heater unit 30, the efficiency of the heat exchange device is extremely improved. Therefore, the thermal efficiency of the gas turbine is also improved.

In this embodiment, each of the side plates 11 and 31 forms a side wall of the wind tunnel, the cooling air inlet header 15 and the cooling air outlet header 16 form a first header, and the fuel inlet header 35 and the fuel The outlet header 36 constitutes the second header, and the slide plates 20 and 2
1 constitutes a first slide plate, the slide plates 40 and 41 constitute a second slide plate, and the expansion plates 50 and 51 constitute second leakage prevention means.

[Second Embodiment] Next, a second embodiment of the heat exchange apparatus according to the present invention will be described. The difference between the heat exchange device of the second embodiment and the first embodiment described above is that the heat exchange device according to the second embodiment differs from the heat exchange device according to the first embodiment in that the cooling air inlet header 15 or the cooling air outlet header 16 is provided between the side plates 11, 11 The structure is the same as that of the first embodiment except for the structure of the leakage prevention means and the leakage prevention means provided between the fuel inlet header 35 or the fuel outlet header 36 and the side plates 31, 31.

FIG. 3 shows the leakage preventing means provided between the cooling air inlet header 15 and the side plates 11 in the second embodiment, and the left end of each side plate 11 has An extension plate 23 extending in the direction of extending the side plate 11 to the left is fixed by means such as welding, and its tip extends to the side of the cooling air inlet header 15 as a free end. A slide member 24 is fixed to the side surface of the cooling air inlet header 15 so as to overlap with the entire length of the extension plate 23 in the height direction (the direction perpendicular to the paper surface in FIG. 3). ing.

The extension plates 23, 23 are also provided when the cooling air tube 14 extends in the axial direction due to thermal expansion, and as a result, the cooling air inlet header 15 moves in a direction away from the wind tunnel 13. , 23 so that the inner surface on the tip side always slides on the slide member 24,
Its length is set. Therefore, even when the cooling air inlet header 15 moves in the direction away from the wind tunnel 13, the cooling air inlet header 15 and the side plates 11,
There is no gap between the air passage 11 and the air, and the air flowing in the wind tunnel 13 does not leak therefrom. In addition, instead of attaching the extension plate 23 to the side plate 11,
The length of the side plate 11 may be increased by the length of the extension plate 23 in advance.

Although not shown, the cooling air outlet header 1
Between the side plate 6 and the side plates 11 and 11, there is also provided a leakage preventing means composed of an extension plate and a slide member configured as described above. In this embodiment, each extension plate fixed to the side plates 11 constitutes a first slide plate.

Further, although not shown, the extension having the same structure as described above is also provided between the fuel inlet header 35 and the side plates 31, 31 and between the fuel outlet header 36 and the side plates 31, 31. Leakage prevention means composed of a plate and a slide member is provided to prevent air flowing in the wind tunnel 33 from leaking therefrom. In addition,
In this embodiment, the side plates 31, 31
Each of the extension plates fixed to constitutes a second slide plate.

According to the second embodiment, as in the first embodiment, the efficiency of the heat exchange device is significantly improved.

[Third Embodiment] Next, a third embodiment of the heat exchange apparatus according to the present invention will be described. The difference between the heat exchange device of the third embodiment and the first embodiment described above is that the heat exchange device of the third embodiment has a cooling air inlet header 15 or a cooling air outlet header 16 provided between the side plates 11 and 11. The structure is the same as that of the first embodiment except for the structure of the leakage prevention means and the leakage prevention means provided between the fuel inlet header 35 or the fuel outlet header 36 and the side plates 31, 31.

FIG. 4 shows the leakage preventing means provided between the cooling air inlet header 15 and the side plates 11, 11 in the third embodiment, and the left end of each side plate 11 and the cooling air are shown. The side surfaces of the entrance header 15 are connected by an expansion plate (stretchable wall) 25 having the same height as these. The expansion plate 25 has a substantially U-shaped cross section in the middle, and is elastically deformable so that it can expand and contract. One end is fixed to the cooling air inlet header 15 and the other end is fixed to the side plate 11. Have been. The expansion plate 25 allows the cooling air inlet header 15 to be used.
Between the side plate 11 and the wind tunnel 13
The air flowing inside is prevented from leaking from here.

Although not shown, the cooling air outlet header 1
Between the side plate 6 and the side plates 11, there is provided a leakage preventing means composed of an expansion plate configured as described above. In this embodiment, an expansion plate connecting the cooling air inlet header 15 or the cooling air outlet header 16 to the side plates 11, 11 constitutes a first telescopic wall.

Further, although not shown, the fuel inlet header 35 and the side plates 31 and 31, and the fuel outlet header 36 and the side plates 31 and 31 are also connected by the expansion plate configured as described above. The air flowing in the wind tunnel 33 is prevented from leaking from here. In this embodiment, an expansion plate connecting the fuel inlet header 35 or the fuel outlet header 36 to the side plates 31, 31 constitutes a second telescopic wall. According to the third embodiment, as in the first embodiment, the efficiency of the heat exchange device is significantly improved.

[Fourth Embodiment] Next, a fourth embodiment of the heat exchange apparatus according to the present invention will be described. The fourth embodiment is a modification of the third embodiment, and the third embodiment is similar to the third embodiment.
The difference from this embodiment is that the cooling air inlet header 15 or the cooling air outlet header 16 and the side plate 11,
The only difference is the shape of the expansion plate connecting the fuel cell 11 and the fuel inlet header 35 or the fuel outlet header 36 and the expansion plate connecting the side plates 31 and 31.

Referring to FIG. 5, cooling air inlet header 15
The expansion plate 26 is connected to the side plates 11 and 11 as an example. The expansion plate 26 has a substantially S-shaped cross section.
There is an advantage that the expansion and contraction dimension can be easily set larger than the expansion plate 25 of the embodiment. Other expansion plates are configured similarly.

[Fifth Embodiment] Next, a fifth embodiment of the heat exchange apparatus according to the present invention will be described. The heat exchange device of the fifth embodiment is different from the first embodiment in that the cooling air inlet header 15 and the fuel outlet header 3 are different from each other.
6 and the structure of the second leak prevention means provided between the cooling air outlet header 16 and the fuel inlet header 35, and the other configuration is the same as the second leak prevention means. This is the same as the first embodiment.

FIG. 6 shows a second leak preventing means provided between the cooling air inlet header 15 and the fuel outlet header 36 in the fifth embodiment. In the fifth embodiment, the second leak prevention means is constituted by a closing plate 42 that blocks between the cooling air inlet header 15 and the fuel outlet header 36. The closing plate 42 is connected to the two headers 1.
The width of the cooling air inlet header 15
The cooling air inlet header 15 and the fuel outlet header 36 have a height dimension from the lower end of the fuel outlet header 36 to the upper end thereof.
And a step portion between them. The closing plate 42 slidably penetrates all the cooling air tubes 14 and the fuel tubes 34.

Since the space between the cooling air inlet header 15 and the fuel outlet header 36 is closed by the closing plate 42, it is possible to prevent the air flowing in the wind tunnel 13 from leaking from here. Although not shown, the cooling air outlet header 1
The space between the fuel inlet 6 and the fuel inlet header 35 is also closed by the closing plate configured in the same manner as described above, thereby preventing the air flowing in the wind tunnel 13 from leaking from here.

According to the fifth embodiment, as in the first embodiment, the efficiency of the heat exchange device is significantly improved.

Even if the closing plate 42 is fixed to one of the cooling air tube 14 and the fuel tube 34, the present invention is established as long as it penetrates the other in a slidable manner.

Further, the slide plates 20, 20 according to the first embodiment are fixed to the closing plate 42,
The slide plates 20, 20 are attached to the side plate 1
You may make it slidably provided with respect to 1,11.

[0066]

According to the heat exchange apparatus of the present invention, a wind tunnel in which air as a heat medium flows in one direction between side walls installed opposite to each other, and the side wall extends between the side walls of the wind tunnel. A first fluid flowing along the direction and intersecting the flow direction of the air, the first fluid being indirectly cooled by the air flowing through the wind tunnel, and being movable relative to the wind tunnel in the axial direction of the pipe. And a first fluid that is disposed substantially parallel to the first conduit downstream of the first conduit between the side walls of the wind tunnel in the direction of air flow, and that flows through the first conduit. A pipe through which a second fluid indirectly heated by air flowing through the wind tunnel heated by indirect cooling of
A second pipe installed so as to be relatively movable in the pipe axis direction with respect to the wind tunnel; and a second pipe arranged on a side of the wind tunnel on an extension of the first pipe and connected to the first pipe. A first header through which the first fluid flows, a second header disposed on a side of the wind tunnel on an extension of the second conduit, and connected to the second conduit and through which the second fluid flows; Leakage that can prevent air in the wind tunnel from leaking between the first header or the second header and the side wall of the wind tunnel even when the first pipeline or the second pipeline moves relative to the wind tunnel. The air as the heat medium flowing through the wind tunnel is prevented from leaking to the outside on the way, and almost all of the air as the heat medium is cooled by the first fluid and heated by the second fluid. The efficiency of the heat exchanger is improved because it can be used without waste. Effect is achieved.

Further, in the case where there is provided a second leak prevention means capable of preventing air in the wind tunnel from leaking between the first header and the second header, air flowing through the wind tunnel leaks to the outside. Can be more reliably prevented, so that the efficiency of the heat exchange device is further improved.

Further, when the first fluid flowing through the first pipe is cooling air for cooling the turbine, and the second fluid flowing through the second pipe is fuel of the turbine, the first fluid flows through the first pipe. There is an effect that thermal efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view of a heat exchange device according to a first embodiment of the present invention.

FIG. 2 is a plan view of a main part of the heat exchange device according to the first embodiment.

FIG. 3 is a main part plan view of a heat exchange device according to a second embodiment of the present invention.

FIG. 4 is a main part plan view of a heat exchange device according to a third embodiment of the present invention.

FIG. 5 is a main part plan view of a heat exchange device according to a fourth embodiment of the present invention.

FIG. 6 is a main part front view of a heat exchange device according to a fifth embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Heat exchange apparatus 10 Rotor cooling air cooler unit 11 Side plate (side wall) 13 Wind tunnel 14 Tube for cooling air (1st pipeline) 15 Cooling air inlet header (1st header) 16 Cooling air outlet header (1st header) Reference Signs List 17 electric fan 20 slide plate (first slide plate) 21 slide plate (first slide plate) 23 extension plate (leakage prevention means) 25 expansion plate (expandable wall) 26 expansion plate (expandable wall) 30 fuel heater unit 31 side plate (Side wall) 33 wind tunnel 34 fuel tube (second conduit) 35 fuel inlet header (second header) 36 fuel outlet header (second header) 40 slide plate (second slide plate) 41 slide plate (second slide plate) ) 42 Closed Closing plate (second leak preventing means) 50 Expansion plate (elastic wall, second leak preventing means) 51 Expansion plate (elastic wall, second leak preventing means)

Claims (8)

[Claims] 1. A wind tunnel in which air as a heat medium flows in one direction between side walls installed opposite to each other, and between the side walls of the wind tunnel, along a direction in which the side wall extends and intersecting with the direction of air flow. A first fluid passage that is arranged in the direction, and through which the first fluid that is indirectly cooled by the air flowing through the wind tunnel flows, and that is installed so as to be relatively movable in the tube axis direction with respect to the wind tunnel; The wind tunnel is disposed substantially parallel to the first conduit downstream of the first conduit in the air flow direction between the side walls of the wind tunnel, and heated by indirect cooling of the first fluid flowing through the first conduit. A second fluid passage in which a second fluid that is indirectly heated by air flowing through the first fluid passage is provided so as to be relatively movable in the tube axis direction with respect to the wind tunnel; Is disposed on the side of the wind tunnel, and is connected to a first conduit so that the first fluid flows. A first header, a second header disposed on a side of the wind tunnel on an extension of the second conduit, connected to the second conduit, and through which the second fluid flows; and the first conduit or the first conduit. When the second conduit moves relative to the wind tunnel, the first header or the second
A leakage prevention means capable of preventing air in the wind tunnel from leaking from between the header and the side wall of the wind tunnel. 2. The leak prevention means includes: a first slide plate fixed to one of the first header and the side wall of the wind tunnel and slidable with respect to the other; and a second slide between the second header and the side wall of the wind tunnel. The heat exchange device according to claim 1, further comprising: a second slide plate fixed to one of the slide plates and slidable with respect to the other. 3. The leakage prevention means has both ends of the first
A telescopic first telescopic wall fixed to the header and the side wall of the wind tunnel; and a telescopic second telescopic wall fixed at both ends to the second header and the side wall of the wind tunnel. The heat exchange device according to claim 1, characterized in that: 4. The air conditioner according to claim 1, further comprising a second leak prevention unit configured to prevent air in the wind tunnel from leaking from between the first header and the second header. A heat exchange device as described. 5. The heat exchange according to claim 4, wherein said second leakage preventing means comprises a telescopic wall having both ends fixed to a first header and a second header. apparatus. 6. The first leakage prevention means includes a first leakage prevention means.
A closing plate that penetrates the conduit and the second conduit and that is slidably attached to at least one of the first conduit and the second conduit and that blocks between the first header and the second header; The heat exchange device according to claim 4, wherein the heat exchange device is configured. 7. The system according to claim 1, wherein the first fluid flowing through the first conduit is cooling air for cooling a turbine, and the second fluid flowing through the second conduit is fuel for the turbine. Item 7. The heat exchange device according to any one of Items 1 to 6. 8. The heat exchange device according to claim 7, further comprising a blower that blows air as a heat medium into the wind tunnel.