JPH10288478A - Heat exchanger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use a heat exchanger for high pressure by a constitution wherein a reinforcing material which can support a primary surface plate for cold gas and a primary surface plate for hot gas in the stacking direction is inserted and disposed inside one of a cold gas passage and a hot gas passage, at least. SOLUTION: A reinforcing material 33 which can support a primary surface plate 12 for cold gas and a primary surface plate 20 for hot gas in the stacking direction (longitudinal direction 21) is inserted and disposed inside an air passage 24 and a gas passage 25. A force of support by the reinforcing material 33 is obtained afresh in addition to the force of mutual support of a contact part of the crest 1 of a wave of the primary surface plate 12 for cold gas and the trough 2 of a wave of the primary surface plate 20 for hot gas and the force of mutual support of the contact part of the trough 2 of the wave of the primary surface plate 12 for cold gas and the crest 1 of the wave of the primary surface plate 20 for hot gas, and thereby the withstand pressure strength of the air passage 24 and the gas passage 25 is increased. Thereby a heat exchanger can be used for high pressure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heat exchanger, and more particularly, to a heat exchanger that can be used for high pressure.

[0002]

2. Description of the Related Art Primary surface heat exchangers (primary surface heat exchangers) which are easier to miniaturize and have higher performance than plate fin heat exchangers and are suitable for use with internal combustion engines such as gas turbines. A heat exchanger, called, has been developed.

The above heat exchanger is as shown in FIGS.

That is, as shown in FIGS. 7 to 9, peaks 1 and valleys 2 appear alternately in the left-right direction 3 and peaks 1 and valleys 2 extending in the vertical direction 4 meander to the left and right. A large number of two types of vertical thin corrugated plates 5 and 6 having a pattern are provided.

[0005] Then, as shown in FIG.
A pair of triangular air inlet corrugated portions 9 forming inclined air inlet channels 8 for inflow of air 7 (cold gas) from both left and right sides are attached to the upper side of the corrugated plate 5. On the lower side, a pair of triangular air outlet corrugated plates 11 forming inclined air outlet channels 10 for collecting and extracting the air 7 at the center are attached.
The primary surface plate 12 for air is constituted.

Reference numeral 13 denotes an air inlet duct attached to an inlet portion of the air inlet channel 8, and 14 denotes an air outlet duct attached to an outlet portion of the air outlet channel 10.

[0008] As shown in FIG. 8, a pair of triangular gases forming gas outlet passages 16 for allowing gas 15 (hot gas) to escape substantially upward on the upper side of the other corrugated plate 6. An outlet corrugated plate portion 17 is attached, and a pair of triangular gas inlet corrugated plate portions 19 forming a gas inlet passage 18 for receiving the gas 15 from substantially below are attached to the lower side of the corrugated plate 6. , The primary surface plate 20 for gas.

Further, the air primary surface plate 12 and the gas primary surface plate 20 are stacked in multiple stages in the front-rear direction 21 and between the edges of the air primary surface plate 12 and the gas primary surface plate 20. By welding and fixing between the primary surface plate 12 for air, the primary surface plate 20 for gas, and the peripheral member 22 (welded portion 23) with the peripheral member 22 interposed therebetween, the air flow path 24 and the gas flow path are respectively provided inside. A heat exchanger 26 as shown in FIG.

The edge member 22 is not provided at the inlet of the air inlet channel 8 and the gas inlet channel 18 and at the outlet of the air outlet channel 10 and the gas outlet channel 16. So that

[0010] As shown in FIG.
Exhaust gas duct section 28 of an internal combustion engine such as gas turbine 27
The exhaust gas (gas 15) is arranged in the middle of the gas passage 25 so as to pass through the gas passage 25,
Is connected to the air inlet duct 13 attached to the air inlet passage 8 and the air outlet duct 14 attached to the air outlet passage 10 is connected to the air inlet pipe 31 of the turbine section of the gas turbine 27. Connecting.

Reference numeral 32 denotes an air intake port in the air compressor section 29 of the gas turbine 27.

According to this configuration, when the gas turbine 27 is driven and the air compressor section 29 is turned, the air 7
The (cold gas) is drawn into the air compressor section 29 from the air suction port 32 and compressed inside the air compressor section 29, and the compressed air 7 is then heated from the air outlet pipe 30 through the air inlet duct 13. Sent to exchanger 26,
The air passes through the heat exchanger 26 in the order of the air inlet channel 8, the air channel 24, and the air outlet channel 10, and is sent from the air outlet duct 14 to the turbine section of the gas turbine 27 via the air inlet pipe 31. , Used for fuel combustion in the turbine section.

The high-temperature gas 15 (hot gas) such as exhaust gas generated by fuel combustion in the turbine section is discharged to an exhaust gas duct section 28, and flows inside the heat exchanger 26 on the way to a gas inlet flow. The air 7 is heated in the passage 18, the gas flow path 25, and the gas outlet flow path 16 in the order of the air 7 so that the air 7 is heated. It is cooled down and then discharged.

The heat exchanger 26 is provided with an air 7 and a gas 15 separated only by an extremely thin corrugated primary surface plate 12 for air and a primary surface plate 20 for gas.
, A large heat transfer area can be ensured structurally, and a higher heat exchange efficiency can be obtained as compared with a plate-fin type heat exchanger.

In addition, since the structure is simple, the size can be reduced as compared with the plate fin type heat exchanger.

The above description is made by way of example with the gas turbine 27.
Although the description has been made of the case where
The heat exchange that can be performed is not limited to only between the air 7 and the exhaust gas 15.

[0017]

However, the above heat exchanger has the following problems.

That is, the heat exchanger is formed by laminating an extremely thin corrugated primary surface plate 12 for air and a primary surface plate 20 for gas in an extremely thin thickness of about 0.1 mm. 1
2 wave peaks 1 and primary surface plate 20 for gas
And the mutual support force of the contact portion between the wave trough 2 of the primary surface plate 12 for air and the wave crest 1 of the primary surface plate 20 for gas. Since the strength is maintained, the pressure resistance of the air flow path 24 and the gas flow path 25 is not so high, and therefore, it can be used only for low pressure.

The present invention has been made in view of the above circumstances, and has as its object to provide a heat exchanger that can be used for high pressure.

[0020]

According to the present invention, a corrugated primary surface plate for cold gas 12 and a primary surface plate for hot gas 20 are laminated by interposing an edge material 22 between the edges to form an inner surface. In the heat exchanger in which the cold gas flow paths 24 and the hot gas flow paths 25 are alternately formed, the cold gas primary surface plate 12 and the heat The heat exchanger according to the present invention is characterized in that the gas primary surface plate 20 has a reinforcing member 33 capable of supporting the primary surface plate 20 in the stacking direction 21 inserted therein.

In this case, the reinforcing member 33 may be a corrugated reinforcing plate 34.

A large number of holes 35 are formed in the corrugated reinforcing plate 34.
May be formed.

Further, the reinforcing member 33 may be a rod-shaped member 36.

According to the above means, the following effects can be obtained.

Since the cold gas primary surface plate 12 and the hot gas primary surface plate 20 and the reinforcing member 33 capable of supporting the primary surface plate 20 for the hot gas in the laminating direction 21 are inserted and arranged inside the cold gas channel 24 and the hot gas channel 25. The mutual support force of the contact portion between the wave peak 1 of the cold gas primary surface plate 12 and the wave trough 2 of the hot gas primary surface plate 20, and the wave trough 2 of the cold gas primary surface plate 12 In addition to the mutual support force of the contact portion of the hot gas primary surface plate 20 with the wave peak 1, a support force by the reinforcing member 33 is newly obtained. As a result, the cold gas flow path 24 and the hot gas flow The pressure resistance of the passage 25 is increased, and the passage 25 can withstand the passage of the high-pressure air 7 and the high-pressure gas 15.

In this case, by using the reinforcing member 33 as the corrugated reinforcing plate 34, it is possible to exert a greater supporting force as compared with the case where the flat reinforcing member 33 is used.

A corrugated reinforcing plate 34 as a reinforcing member 33
By forming a large number of holes 35 in the hole, it is possible to reduce the weight when the reinforcing member 33 is provided.

Further, by using the rod-shaped member 36 as the reinforcing member 33, it is possible to reduce and prevent an increase in weight due to the reinforcing member.

[0029]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a first embodiment of the present invention. The basic structure of the heat exchanger is the same as that shown in FIGS. 5 to 9, and the same parts are denoted by the same reference numerals. The description will be omitted by attaching.

In the present invention, the air passage 24 and the gas passage 25
The reinforcing member 33 capable of supporting the primary surface plate 12 for air and the primary surface plate 20 for gas in the stacking direction (the front-rear direction 21) is inserted and arranged inside.

As the reinforcing member 33, as shown in FIG. 2, a corrugated reinforcing plate 34 extending in the longitudinal direction of the air passage 24 and the gas passage 25 is used.

The reinforcing member 33 may be provided for all the air passages 24 and the gas passages 25,
4 and some of the gas passages 25 may be selectively provided.

The reinforcing member 33 may extend over the entire length of the air passage 24 and the gas passage 25, or may extend to an appropriate length.

Next, the operation will be described.

The process in which the heat exchanger performs heat exchange is the same as in the case of FIGS.

In the present invention, the air passage 24 and the gas passage 25
The reinforcing material 33 which can support the primary surface plate 12 for air and the primary surface plate 20 for gas in the laminating direction (the front-back direction 21) is inserted inside, so that the wave peak 1 of the primary surface plate 12 for air is arranged.
And the contact between the wave trough 2 of the gas primary surface plate 20 and the wave crest 1 of the gas primary surface plate 20 and the wave trough 2 of the gas primary surface plate 20. In addition to the mutual support force, the support force of the reinforcing member 33 is newly obtained. As a result, the pressure resistance of the air flow path 24 and the gas flow path 25 is increased, and the pressure of the high-pressure air 7 and the high-pressure gas 15 is increased. It becomes possible to withstand passage.

Further, by using the reinforcing member 33 as the corrugated reinforcing plate 34, it is possible to exert a larger supporting force than in the case where the flat reinforcing member 33 is used.

For example, when the reinforcing material 33 is inserted, 10 k
It can be used for high-pressure air 7 and high-pressure gas 15 as high as g / cm ² or more.

FIG. 3 shows a second embodiment of the present invention, in which a corrugated reinforcing plate 34 as a reinforcing member 33 has a large number of holes 3.
5 is formed.

As described above, by forming a large number of holes 35 in the corrugated reinforcing plate 34 as the reinforcing member 33, it is possible to reduce the weight when the reinforcing member 33 is provided.

Except for the above, it has the same configuration as that of the above-described embodiment, and can obtain the same operation and effect.

FIG. 4 shows a third embodiment of the present invention, in which a bar-shaped member 36 is used as a reinforcing member 33.

As described above, the rod-shaped member 3
By using 6, it is possible to reduce and prevent an increase in weight due to the reinforcing member 33.

The arrangement of the bar-shaped member 36 as the reinforcing member 33 can be arbitrarily determined.

Except for the above, it has the same configuration as that of the above-described embodiment, and the same operation and effect can be obtained.

It should be noted that the present invention is not limited only to the above-described embodiment, and that a reinforcing material other than those described above can be used, and other various modifications can be made without departing from the gist of the present invention. Of course, changes can be made.

[0048]

As described above, according to the heat exchanger of the present invention, there is an excellent effect that the heat exchanger can be used for high pressure.

[Brief description of the drawings]

FIG. 1 is a partially enlarged perspective view according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the reinforcing member of FIG.

FIG. 3 is a perspective view of a reinforcing member according to a second embodiment of the present invention.

FIG. 4 is a front view of a reinforcing member according to a third embodiment of the present invention.

FIG. 5 is a perspective view showing a state where the heat exchanger is attached to a gas turbine.

FIG. 6 is an overall schematic perspective view of a heat exchanger.

FIG. 7 is a side view of a primary surface plate for air.

FIG. 8 is a side view of a primary surface plate for gas.

FIG. 9 is a view taken along the line IX-IX in FIGS. 7 and 8;

[Explanation of symbols]

Reference Signs List 12 Primary surface plate for cold gas (primary surface plate for air) 20 Primary surface plate for hot gas (primary surface plate for gas) 21 Stacking direction (front-back direction) 24 Cold gas flow path (air flow path) 25 Hot gas flow path (Gas flow path) 33 Reinforcing material 34 Corrugated reinforcing plate 35 Hole 36 Bar-shaped member

Claims (4)

[Claims] 1. A cold gas primary surface plate (12) and a hot gas primary surface plate (20) having a corrugated shape are laminated with an edge material (22) between the edge portions, so that the cold surface is internally cooled. The gas flow path (24) and the hot gas flow path (2
In the heat exchanger in which 5) are alternately formed, at least one of the cold gas flow path (24) and the hot gas flow path (25) has a cold gas primary surface plate (12) and a hot gas primary surface plate. A heat exchanger characterized in that a reinforcing material (33) capable of supporting the plate (20) in the stacking direction (21) is inserted into the plate (20). 2. The reinforcing material (33) is a corrugated reinforcing plate (34).
The heat exchanger according to claim 1, wherein 3. A large number of holes (3) in a corrugated reinforcing plate (34).
3. The heat exchanger according to claim 2, wherein (5) is formed. 4. The heat exchanger according to claim 1, wherein the reinforcement is a bar.