JPS59205593A - Heat exchanger - Google Patents

Abstract

PURPOSE:To stabilize heat conductive tubes with respect to strength by making the bends in the sideward direction smaller by a method in which heat conductive pipes are set concentrically and fitted into rings, and stoppers to limit the radially directed movement are provided. CONSTITUTION:Support bushes 25 fixed to connecting rings 26 concentrically set around a manifold 24 are slidably fitted into the lower communication tubes 21 of heat conductive tubes. The connecting rings 26 are hung down from the supporters 22 of the heat conductive tubes through hanging plates 27, and stoppers 28 for limiting the horizontal movement of the rings 26 are set on the periphery of the rings 26. Apertures are provided between the tips of the stoppers 28 and the adjacent rings 26 and also between the outermost stopper 28 and the container body 29. The lower communication tubes 23 of the heat conductive tubes can be freely deformed thermally. Since the horizontal vibration of the tubes 23 is orderly transmitted to the bushes 25, the rings 26, the stoppers 28, and the container body 29, the movement is limited, the vibration amplitude and sideward bending of the tubes 23 are greatly lessened, and the strength of the heat conductive tubes can thus be highly stabilized.

Description

[Detailed description of the invention] The present invention relates to improvements in heat exchangers.

Figure 1 shows a conventional heat exchanger, in which high-humidity primary gas (α) flowing from the lower inlet (2) of the container (1) passes through the helical coiled heat exchanger tube (3) inside the container (]). The secondary gas (bl) in the heat transfer tube (3) rises through the heat exchanger tube (3) while heating it, and flows out from the upper nozzle (4) of the container (1). The secondary gas (
b) is a heat exchanger tube upper connecting pipe (7) connected to a tube plate (6);
is heated by the high temperature primary gas (α) while passing through the helical coiled heat transfer tube (3), follows the heat transfer tube lower connecting tube (8), is injected into the manifold (9), and is heated by the central gas (10).
) flows out into a pile to the outside.

The supporting device [1] for the helical coil heat exchanger tube (3)
11 is suspended from the top of the container OD via a support member <121, and the center ξ Eve (10) is also suspended from the top of the container (1).

Therefore, the heat transfer tube support device (111, the support member (12+, and the center pipe tlo) are each configured to be able to freely expand downward. However, each part has a slightly different amount of complete thermal expansion depending on the temperature distribution, so The heat transfer tube lower connecting tube (8) that connects the heat tube support device circle and the manifold (9) is formed into an L-shape that is easily bent in order to absorb this difference in thermal expansion.

However, in the conventional heat exchanger, the lower connecting pipe (8) of the heat transfer tube is not provided with a support part to make it easier to bend in order to absorb thermal deformation, and as a result, the horizontal rigidity is small. As shown by the dotted line in FIG. 2, it becomes easy to vibrate in the horizontal direction due to earthquakes, fluid vibration force, etc.

In particular, in the case of a high-temperature gas heat exchanger that handles 1[3[)O'C: nearby Kaede high-i crystal gas, the area around the lower connecting pipe (8) is closest to the material temperature of 100°C, The bending force caused by this horizontal vibration becomes extremely dangerous since the strength also decreases to the extreme.

The present invention has been proposed to solve these problems, and includes arranging the heat exchanger tubes concentrically in the vicinity of the connection portion of the helical coil heat exchanger tubes to the tube header of the tube plate or manifold, etc. , each of the heat exchanger tubes is movably inserted into rings arranged concentrically, and a stopper is provided between each ring to restrict movement of the rings in the radial direction. This relates to a heat exchanger.

In the present invention, as described above, the heat exchanger tubes are arranged concentrically in the vicinity of the joining part of the helical coil heat exchanger tube to the tube plate or the header of the manifold 9, and each heat exchanger tube has the same 71L% circular shape. Since a stopper is fitted to the rings arranged in a shape and restricts the movement of the rings in the radial direction between each ring, the horizontal vibration of the heat exchanger tube is suppressed by the rings and the strode ξ. The movement is suppressed, the vibration vibration 4 (,) is very small, and therefore the lateral bending is very small, making it safer in terms of strength than l.

Further, since the heat exchanger tube is slidably fitted into the ring, it is free to thermally deform and absorb differences in thermal expansion.

UTThe present invention will now be described with reference to the illustrated embodiments.

(2) is a helical coil heat exchanger tube, (2) is a heat exchanger tube support device δ, (23) is a heat exchanger tube arranged concentrically at 12 with manifold (2) as the center, and connected to the same manifold. This is the lower connecting pipe.

(25) is a support bush fixed to a coupling ring 06) arranged concentrically around the manifold (to), and is slidably inserted into the heat exchanger tube lower connection #G1). . In addition, the coupling ring <26) is suspended from the heat exchanger tube support device f (221) via a hanging plate. On the outer periphery of each coupling ring 4, a rotation ring (!6) is attached in the horizontal direction. An ophthalmic stopper C2 second is disposed in the moving part of the moving part, and a coupling ring (26
) is provided with a gap between the two. A gap is also provided between the outermost stopper C)a and the container body C, 1it).

As mentioned above, in the case of J51, the support bush I; J51 has a heat transfer coil. Since the lower connecting pipe (inside the lower connecting pipe) is slidably inserted, and a gap J is provided between the stopper Q9 and the coupling ring (20), the lower connecting pipe (23) of the heat exchanger tube can be inserted freely. Can be heat deformed. Also, jiil heat exchanger tube lower connection/L? Horizontal vibration of Buddhist ginseng: 11th support bush (25), connecting limb 6), stopper 2, container body t2
! l), so suppress the ・rdJ; tl
and the vibration amplitude becomes very small.

Therefore, there is very little bending of the lower connecting pipe (23) of the front Me heat exchanger tube in the camphorax direction, and it is safe in terms of strength.

Although the present invention has been described with reference to ten embodiments, the present invention is of course not limited to the first embodiment,
Various modifications and modifications may be made without departing from the spirit of the present invention.

[Brief explanation of drawings]

1 is a vertical sectional view of a conventional heat exchanger, FIG. 2 is an enlarged slope view of the lower part of the heat exchanger tube, τ:・line pipe section, and FIG. 3 is an embodiment of the heat exchanger according to the present invention. The longitudinal sectional view of the main part, the left half and the right half of FIG. 4 are 8g2 diagram IVAIVAA! , and is a plan view of the country along the IVB-IVB line. Iso: Heat exchanger tube lower connecting pipe, Shimashi: Manifold, 1
15)...Supporting bush, Song)...Connecting ring,
(z8) --- Stopper, (29) --- Yongmankou provisional agent Patent attorney Shige Okamoto 2 outsiders 1st doctor Figure 3

Claims (1)

[Claims] The heat exchanger tubes are arranged concentrically in the vicinity of the joining part of the helical coil heat exchanger tube to the pipe plate of the tube plate or the tube bending part of the manifold, and the heat exchanger tubes of the same name are slidably arranged in the ring arranged concentrically. A heat exchanger (floating device) characterized in that the rings are fitted into each other and struts ξ are arranged between the rings to restrict movement of the rings in the radial direction.