JPH0518689A - Heat transfer tube support for heat exchanger - Google Patents

Abstract

PURPOSE:To obtain a heat transfer tube support for heat exchanger, high in the reliability of quality and inexpensive in the manufacturing cost thereof. CONSTITUTION:The title support is provided with flat slit plate 1, on which slits having the half size of the width of the flat plate 1 are applied lengthwisely with a given interval continuously and a corrugated plate 2, having slits having about half size of the width of the plate 2 continuously in the lengthwise direction with a given interval and bent in the lengthwise direction of the plate continuously with a given interval. The slits of the flat plate 1 are engaged with the slits of the corrugated plate 2 so as to be orthogonal to each other while an assembled structure is utilized as the support of heat transfer tubes for a heat exchanger.

Description

Detailed Description of the Invention

The present invention relates to a heat transfer tube support used in a heat exchanger or the like.

[0002]

2. Description of the Related Art As an example of the structure of a multi-tube heat exchanger 7, as shown in FIG. 5, a large number of heat transfer tubes 9 are provided in a cylindrical body 8.
Are arranged, and both ends of these heat transfer tubes 9 are fixed to the tube sheet 10 and are supported by cutout baffles 11 in the middle. A body-side inlet nozzle 12 and a body-side outlet nozzle 13 are provided on the side surface of the body 8, and the fluid flowing from the body-side inlet nozzle 12 flows as shown by an arrow A in the figure and passes through the body-side outlet nozzle 13. It is designed to be leaked to the outside. In addition, a pair of tube-side heads 1 is provided at both ends of the body 8.
4 and 15 are provided, the tube-side head 14 is provided with the tube-side inlet nozzle 16, and the tube-side head 15 is provided with the tube-side outlet nozzle 17. The fluid flowing from the tube-side inlet nozzle 16 flows through the heat transfer tube 9 and then flows out to the outside through the tube-side outlet nozzle 17.

When the notch baffle 11 as described above is provided in the body 8, the fluid becomes a fold flow before and after the notch baffle 11 and flows orthogonally to the heat transfer tube 9. Therefore, the heat transfer performance between the cylinder side and the tube side is good, but there is a drawback that the cylinder side pressure loss becomes large.

Further, when the cutout baffle 11 is provided in the body 8, the portion of the cutout baffle 11 in contact with the body 8 is welded as a whole, and the heat transfer tube is inserted into a through hole through which the heat transfer tube 9 provided in the cutout baffle 11 passes. The heat transfer tube 9 must be welded to the notch baffle 11 through the plate 9 so as not to move. It is also difficult to pass the heat transfer tube 9 through the through holes provided in some of the notch baffles 11 (four in the illustrated example), and the welding work for stopping is also very time consuming. This is a laborious task. (The first example is the case where a large number of heat transfer tubes are mounted in the body.) In another example of a multi-tube heat exchanger with tiebes, the heat transfer tubes are densely bent and the heat transfer tubes are bent. A method of mounting the heat exchanger inside the body of the heat exchanger will be described. In this example, the body of the heat exchanger has a square shape, and as a fixed frame corresponding to the cutout baffle in the first example for mounting a large number of heat transfer tubes in the door body, FIGS. (B)
Several sets of frames in which a large number of flat plates 5 and 6 are welded to the frames 3 and 4 as shown in FIG.

Explaining the assembling method thereof, FIG.
A group of flat plates 5 are obliquely welded to the frame 3 as shown in FIG. 1 at regular intervals (diameter outside the heat transfer tube). The support having such a structure is called a vertical stop support. On the other hand, a group of flat plates 6 are welded laterally to the frame 4 as shown in FIG. 3 (B) at regular intervals (diameter outside the heat transfer tube). The support having such a structure is called a lateral stop support. By using the vertical stop support and the horizontal stop support as a pair, a fixed frame of the heat transfer tube can be formed as shown in FIG. If this fixed frame is used at four places, it can be used like a fixed frame corresponding to the cutout baffle in the first example, and a large number of heat transfer tubes can be mounted inside the case. In the case of the second example (an example in which a large number of heat transfer tubes are suspended in the case is referred to as a second example), a large number of flat plates must be welded to the frame, and the frame is further provided in the case of the heat exchanger. Must be welded to and attached to.

In both the first example and the second example, the work of welding many points was a bottleneck in the process of manufacturing the multitubular heat exchanger. In addition, the welded part may be destroyed by vibration during use of the multi-tube heat exchanger,
There was also a quality problem.

[0007]

SUMMARY OF THE INVENTION An object of the present invention is to solve the drawbacks of the prior art as in the above-mentioned first and second examples, and to support a large number of heat transfer tubes in a shell-and-tube heat exchanger. To provide low and reliable support in terms of quality.

[0008]

DISCLOSURE OF THE INVENTION The above object of the present invention is to provide a flat plate member with slits having a plurality of slits which are approximately half the size of the flat plate in the width direction and are provided at regular intervals in the length direction. And a plurality of corrugated sheet materials that are continuously bent at a constant interval in the length direction having a plurality of slits provided at the center of each bent portion with about half the dimension in the width direction. A heat transfer tube support for a heat exchanger, characterized by being assembled by fitting the slits of the flat plate member and the slits of the corrugated plate member so that the slit portions intersect each other in parallel. To be done.

The flat plate material and corrugated plate material of the present invention are processed as follows. That is, the flat plate material 1 is shown in FIG.
As shown in FIG. 5, a plurality of slits each having a size about half the size in the width direction are formed on the flat plate by, for example, press working. The distance between the slits is the outer diameter of the heat transfer tube. Corrugated sheet material 2
First, as shown in FIG. 1B, a plurality of slits each having a size of about half the size in the width direction are first formed in the flat plate material by, for example, press working. The slit spacing is designed such that when the flat plate material 1 is bent and formed in the center of the adjacent slits, the horizontal spacing of the adjacent slits becomes the outer diameter of the heat transfer tube. Therefore, the slit spacing on a flat plate changes depending on the bending angle. However, the position of the slit in the portion of the heat exchanger to be welded to the body changes depending on factors such as the shape of the body in the case of flat plate material and corrugated plate material. The method of bending the corrugated sheet material is also influenced by factors such as the shape of the body. The corrugated sheet material 2 having a plurality of slits formed as described above is shown in (A) of FIG. 1 except the end portion if the contour of the plan view is changed by changing the length and the direction as shown in (B) of FIG. It is the same as the flat plate material 1.

The feature of the support of the heat transfer tube for a heat exchanger of the present invention is that when assembling the support, the welding may be performed only on the outer periphery so that the flat plate material and the corrugated plate material do not come back and forth. Further, since the heat transfer tube, the flat plate material and the corrugated plate material can be sequentially knitted, it is difficult to pass the heat transfer tube through the hole of the support completed by welding as in the case of the first and second examples. It is something that can be avoided.

[0011]

EXAMPLE FIG. 2 shows a state in which the flat plate member 1 and the corrugated plate member 2 are assembled as the support of the heat transfer tube for the heat exchanger by fitting the respective slits. The width of flat and corrugated sheet materials,
Various deformations such as the method of bending the corrugated sheet material can be considered. The present embodiment is a specific example. The invention is not limited by this example.

[0012]

As described above, according to the present invention, the processing is mainly performed by pressing and bending, and the number of welding points can be very small, so that the cost of the processing step is greatly reduced.

Further, since the assembly can be carried out by sequentially knitting the heat transfer tube, the flat plate material and the corrugated plate material, the assembling work becomes very easy and the strength of the support is remarkably strengthened.

[Brief description of drawings]

FIG. 1 is a flat plate material 1 used for a heat transfer tube support of the present invention.
It is a top view which shows (A) and corrugated board material 2 (B), and (C) is an elevation view of corrugated board material 2.

FIG. 2 is an assembly side view of the heat transfer tube support of the present invention.

FIG. 3 is a plan view showing two types of fixing frames used for the heat transfer tube support of the second example.

FIG. 4 is a schematic view in which a heat transfer tube is supported by using two types of fixing frames of a second example.

FIG. 5 is a schematic view of a multi-tube heat exchanger that supports heat transfer tubes by the method of the first example.

[Explanation of symbols]

 1 flat plate material 2 corrugated plate material 3 frame 4 frame 5 flat plate 6 flat plate 7 multi-tube heat exchanger 8 body 9 heat transfer tube 10 tube plate 11 notch baffle 12 body side inlet nozzle 13 body side outlet nozzle 14 tube side head 15 tube side Head 16 Pipe side inlet nozzle 17 Pipe side outlet nozzle

Claims (1)

Claim: What is claimed is: 1. A flat plate member with slits having a plurality of slits which are approximately half the size of the flat plate in the width direction and are provided at regular intervals in the length direction, and each bent portion. A corrugated sheet material that is continuously bent at a constant interval in the length direction having a plurality of slits having a size of about half the size in the width direction in the central part of each is arranged in parallel with each other, A heat transfer tube support for a heat exchanger, characterized in that the two are assembled by fitting the slits of the flat plate material and the slits of the corrugated plate material so that the slit portions intersect each other.