JPS60235998A - Heat exchanger - Google Patents

Abstract

PURPOSE:To contrive facilitated assembly and higher rigidity in a plane at the time of an earthquake while preventing abrasion and corrosion of main bodies of heat exchanger tubes even where ribs are projected at an inclination, by a construction wherein tongue parts of support rings fitted to U-shaped parts of heat exchanger tubes are fastened to a support member provided between the U-shaped parts of the tubes in adjacent rows. CONSTITUTION:The support member 12 is provided between the U-shaped parts of the heat exchanger tubes 11 in the adjacent tube rows. The inner end parts of the support members 12 are connected by a connecting member 15 at the center of bend of the U-shaped parts, the outer end parts of the members 12 are connected by a connecting member 14 on the outside of the tube nest, and the tongue parts 16 of the support rings 13 fitted to the U-shaped parts are fastened to the members 12. Accordingly, even where the ribs 11a are projected at an inclination of 45 deg. against the surface of the tube 11, the thing which makes contact with the support ring 13 is not the main body of the tube 11 but the ribs 11a, so that the main body is not abraded or corroded. When assembling, the rings 13 are fitted to the tubes 11, and the inner and outer end parts of the support members 12 are connected, whereby the structure can be easily assembled. In addition, since the rings 13 and the members 12 effectively restrict displacements of the tubes 11 along the same plane, the rigidity in the plane at the time of an earthquake can be enhanced.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention comprises arranging a plurality of U-shaped heat exchanger tubes with different bending radii in the same plane to form each heat exchanger tube row, and bundling each heat exchanger tube row to form a heat exchanger tube bundle. This invention relates to an improvement in a heat exchanger that forms a heat exchanger.

A part of the conventional heat exchanger is shown in FIGS. 1 and 2. In the heat exchanger, an 8KV-shaped support member (2) of an adjacent row of heat transfer tubes (1) is inserted. The cross-sectional shape of the support member (2) is rectangular or round, and several pieces are inserted between the rows of heat exchanger tubes (1) to support the U-shaped portions of the heat exchanger tubes (1, 1).

The outer end of this support member (2) is attached to a coupling member (4) outside the tube bundle.
) K is fixed, but with this support mechanism, there is a risk that the heat exchanger tube (1) and the support member (2) may wear out due to vibration caused by the fluid. This heat exchanger tube (1) and support member (2)
In order to cope with wear and corrosion caused by heat exchanger tubes (1), lips (or fins) (1α
), and the same fin (1a) is attached to the tube support plate (3) (sixth
, 4 (1)) and the support member (2) (see 6.4 (I)). Note that (I) ([1 in FIG. 6 is an example in which one of the lips protrudes in the longitudinal direction of the support member (2) and a direction perpendicular thereto, and (I) and (II) in FIG. This is an example in which the ribs (1α) protrude at an angle of 45" with respect to the longitudinal direction of the support member (2). At the support structure pressure shown in Fig. 6.4, the spacing between the heat exchanger tubes (1) is In order to make K as small as possible (in order to increase the heat transfer area without increasing the size of the heat exchanger), a lip (one part of which is protruded at an angle of 456 degrees with respect to the longitudinal direction of the support member (2)) is required. Figure 4 (1) (II) is more desirable, but in this case,
The lip (14) no longer comes into contact with the support member (2), and the purpose of the lip cannot be achieved. Therefore, it is considered to provide the support member (2) with protrusions (21) on both sides as shown in Fig. 5, but it is not possible to insert a support member (2) with such a shape for each row of heat exchanger tubes (1). It is extremely difficult to assemble the heat exchanger.In addition, with this support structure, there is no play in the vertical direction of the heat exchanger tube (1), so when relative displacement occurs in the vertical direction due to thermal expansion difference, etc. There was a risk that excessive force would be applied to the heat exchanger tube. (A) shows the bent surface of the heat exchanger tube (1). Also, the point where excessive force is applied to the heat exchanger tube is shown in Figure 6. It is shown in 5c.

The support plate (5) is fitted into the heat exchanger tube (1), and the support plate (5) is slidably fitted into the groove provided in the support member (2), so that the support plate (5) This can be prevented by allowing vertical movement, but in this case, the support plate (5) tends to come off the groove of the support member (2).

The present invention addresses the above-mentioned problems, and consists of a plurality of U-shaped heat exchanger tubes with different bending radii, each having a fin-like protrusion provided along its outer surface in the longitudinal direction, in a row of heat exchanger tubes. In a heat exchanger that forms each of the heat transfer tube rows and bundles the same heat transfer tube rows to form a heat transfer tube bundle, a support member is disposed between the heat transfer tube U-shaped portions of adjacent heat transfer tube rows, and the heat transfer tube rows are The heat exchanger is characterized in that a support ring is fitted into the U-shaped portion of the heat exchanger tube and is locked to the support member, which is a tongue provided on the support ring, and its purpose is to: To prevent wear and corrosion on a heat exchanger tube body even when the ribs are installed at an angle of 45° and project from the outer surface of the heat exchanger tube. Can be easily assembled. Improves in-plane strength during earthquakes. Another object of the present invention is to provide an improved heat exchanger that absorbs relative displacement between the upper and lower support rings due to differences in thermal expansion or the like and does not apply unreasonable force to the heat exchanger tubes.

The heat exchanger of the present invention will be explained using an embodiment shown in FIGS. 7 to 10. (11) is a fin-shaped projection (11
α) is a plurality of U-shaped heat exchanger tubes with different bending radii provided along the longitudinal direction on each outer surface, and each of the heat exchanger tubes (11) is arranged in the same plane to form each heat exchanger tube row. In addition, each row of heat transfer tubes is bundled to form a heat transfer tube bundle. That is, the support member (12) is arranged between the U-shaped parts of the heat exchanger tubes (11) of adjacent heat exchanger tube rows, and the inner end of each support member (12) is connected to the U-shaped part of the heat exchanger tube (11). At the bending center position of the connecting member (
15) [Twisted connection and each support member (12)
The outer ends of the tubes are connected to each other by a coupling member (14) K on the outside of the heat exchanger tube bundle. In addition, U of the heat exchanger tube (11) of the heat exchanger tube row
A support ring (13) is fitted to the character-shaped portion, and the support ring (13) is
13) Attach the rc-provided tongue (16) to the support member (12).
) Ic is locked. Note that the heat exchanger tube (11) and the support member (12) are assembled after the support ring (13) is previously fitted into a predetermined position of the heat exchanger tube (11) with a relatively small gap. At this time, the tongue part (
16) can be rotated nine times in a direction that does not interfere with assembly. Insert the support member (12) into the tongue (16) of the support ring (13) through the hole (16α) provided in the support ring (13).
3) is inserted into the groove (13α), and the inner and outer ends of the support member (12) are connected using the connecting members (14) and (15) as described above.

The heat exchanger of the present invention is constructed as described above, and when the fin-like protrusions (Ua) are tilted 45' from the outer surface of the heat transfer tube (11) (see Fig. 10). However, the support ring (13) K makes contact with the fin-shaped protrusion (1
1α), and does not cause wear or corrosion on the heat exchanger tube (11) body rather than on the heat exchanger tube (11) body. Also, during assembly, the support ring (13) is fitted into the heat exchanger tube (11), and then the support member (12) is inserted between the heat exchanger tube rows,
Connect the inner and outer ends of each support member (12) with a connecting member (14x15
), it is easy to assemble. In addition, each support ring (13) and each support member (12) are
Since the displacement of the plurality of U-shaped heat exchanger tubes (11) having different bending radii from vibration along the same plane is effectively restrained, the in-plane strength during an earthquake can be improved. Furthermore, there is a gap between the upper and lower support rings (13), so that even if relative displacement occurs between the upper and lower support rings (13) due to differences in thermal expansion, this is absorbed and the heat exchanger tubes (11) are not forced to move. Do not apply force. In addition, the support member (12
) passes through the hole (16α) in the tongue (16) of the support ring (13), and there is no possibility that the support ring (13) will come off the support member (12).

Although the present invention has been described above with reference to embodiments, it goes without saying that the present invention is not limited to such embodiments, and that various design modifications can be made without departing from the spirit of the present invention. .

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a conventional heat exchanger, Fig. 2 is an enlarged perspective view of a part thereof, Fig. 6 (I) (If) and Fig. 4 (I) (II) are conventional heat exchangers. 5 is a plan view showing still another example of the conventional heat exchanger, FIG. 6 is a perspective view showing an example of heat exchanger tube support means, and FIG. 7 is a plan view showing another example of the conventional heat exchanger. is a front view showing one embodiment of the heat exchanger according to the present invention,
Fig. 8 is a perspective view of the support ring, Fig. 9 is a plan view thereof, and Fig. 10 is a perspective view of the support ring.
The figure is a side view thereof. (11)... Heat exchanger tube, (11α door... fin-shaped projection. (12)... Support member, (13)... Support ring, (1
6)...Tongue. Sub-Agent Patent Attorney Shige Okamoto 3 people outside the kiln No. 11 Fig. 2 Fig. 3, I) 3 Fig. 4 (■) 3 Fig. 6 Fig. 8 Portion 9 (O Fig.

Claims (1)

[Claims] A plurality of U-shaped heat exchanger tubes having fin-like protrusions along the longitudinal direction on their outer surfaces and having different bending radii are arranged in the same plane to form each row of heat exchanger tubes, and the rows of heat exchanger tubes are bundled. In a heat exchanger that forms a bundle of heat transfer tubes, a support member is provided between the U-shaped portions of the heat transfer tubes in the heat transfer tube rows that are in contact with each other, and a support ring is fitted to the U-shaped portions of the heat transfer tubes in the heat transfer tube rows. 1. A heat exchanger characterized in that the heat exchanger is fixed to the support member, which is a tongue provided on the support ring.