JPH0144960Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a heat exchanger having a water chamber at the end of the body.

[Conventional technology]

The structure near the water chamber of a conventional heat exchanger is shown in the fourth example.
As shown in the figure.

The water chamber cover 7 has a flange 4 for mounting, a nozzle 8 and a flange 9 for pipe connection, and when installing it, it is welded and fixed to the tube plate 1 on the body side of the heat exchanger. It was installed by passing the stud bolt 5 through the mounting hole of the flange 4 and tightening it with a nut 6. 2 is the outer shell of the body, 3 is a heat exchanger tube, and 10 is a gasket.

[Problem that the invention attempts to solve]

However, in such a conventional heat exchanger, when disassembling the water chamber for cleaning the heat transfer tubes 3, etc., the stud bolts 5 require water to flow in the axial direction of the stud bolts 5 as shown in FIG. Chamber cover 7
Therefore, the water chamber cover 7 has to be pulled out.
If the water chamber cover 7 is heavy, it requires a lot of effort and effort, and it is not possible to use a hinge structure to make it easier to handle.In addition, it requires space in the axial direction for attaching and detaching the water chamber cover 7, which requires a lot of effort and effort. There was a problem that it could not be removed unless it was moved.

The present invention solves the above-mentioned problems of the conventional heat exchanger, and provides a heat exchanger in which the water chamber cover can be easily attached and detached, a hinge structure can be applied, or a space for attachment and detachment in the axial direction is not required. The purpose is to

[Means for solving problems]

The present invention provides a heat exchanger having a heat exchanger body and a water chamber as a means for solving the above-mentioned problems of the conventional one, in which the water chamber is integrally fixed to the tube plate of the body. A water chamber body, and a water chamber cover that is removably provided in close contact with the end face of the water chamber body. A nut is provided at a position between the tube plate and the nut.
The present invention provides a heat exchanger characterized in that the heat exchanger is directly fixed to the tube sheet or screwed to a stud bolt that is directly fixed to the tube sheet.

〔Example〕

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

In FIG. 1, the water chamber includes a water chamber body 12 which is integrally fixed to the tube plate 1 by welding, and a water chamber cover which is attached to the end surface of the water chamber body 12 through a gasket 10 and is removably provided. It has 11.

Numeral 17 is a nut for attaching the water chamber cover 11, which is located on the outside of the water chamber body 12 and is attached to the water chamber cover 1.
1 and the tube sheet 1, and is fixed to the tube sheet 1 by welding (resistance welding, etc.). A bolt 14 passes through a mounting hole of the water chamber cover 11 and screws into a nut 17 to fix the water chamber cover 11.

Since the present embodiment is configured in this way, when removing the water chamber cover 11, by removing the bolts 14, the water chamber cover 11 can be moved not only to the right but also in any direction such as upward, downward, or diagonally in a combination thereof. It can be taken out by hand or with a chain block. For example, by removing the bolts connecting the flange 9 and the piping (not shown) in addition to the bolts 14, the water chamber cover 11 can be taken out vertically upward or downward, and there is no need to move the piping, making attachment and removal extremely easy. It becomes easier.

The nut 17 is desirably long so that thermal distortion does not occur to the threaded portion during welding installation.

In addition, the nut 17 is welded to the tube sheet 1, but since the tube sheet 1 is generally a fairly thick plate, deformation due to welding or deformation due to the tightening force for installation will not cause any problems. .

FIG. 2 shows another embodiment of the invention, with nut 1
5 is a stud bolt 5 welded and fixed to the tube plate 1.
It is screwed on. Further, the water chamber cover 11 is attached to a bracket 18 provided on the tube plate 1 via a hinge 16 so as to be rotatably openable and closable.

In this embodiment, once the bolts 14 are removed, the water chamber cover 11 can be easily opened and closed around the hinge 16, as shown in FIG. 3, without requiring any effort or effort to hold it by hand.

In this embodiment, the hinge 16, the bracket 18
Except for this, the embodiment exhibits the same functions and effects as the embodiment shown in FIG.

In any of the embodiments described above, the welding work of attaching the nut 17 or stud bolt 5 is extremely simple if resistance welding is used, and since the water chamber cover 11 is composed of a flat plate, manufacturing is simple and easy. be.

[Effect of idea]

According to the present invention, it is possible to provide a heat exchanger in which the direction of attachment and detachment is not restricted, the water chamber cover can be easily attached and detached, and the structure of the water chamber cover is also simple.
It has a great practical effect.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of an embodiment of the present invention, Fig. 2 is a cross-sectional view of another embodiment of the present invention, Fig. 3 is a cross-sectional view showing the water chamber cover in an open state, and Fig. 4 is a conventional FIG. 5 is a cross-sectional view of the example with the water chamber cover removed. 1...tube sheet, 2...outer shell, 3...heat exchanger tube, 4...
... Flange, 5 ... Stud bolt, 6 ... Nut, 7 ... Water chamber cover, 8 ... Nozzle, 9 ... Flange, 10 ... Gasket, 11 ... Water chamber cover, 12 ... Water chamber body, 14...Bolt, 15...
...Natsuto, 16...Hinge, 17...Natsuto, 1
8...Bracket.

Claims (1)

[Claims for Utility Model Registration] 1. A heat exchanger having a heat exchanger body and a water chamber, wherein the water chamber includes a water chamber body integrally fixed to a tube plate of the body, and a water chamber body of the water chamber body. Closely adheres to the end surface,
A water chamber cover is provided in a removable manner, and a nut is provided outside the body and between the water chamber cover and the tube plate for attaching the water chamber cover, and the nut is provided at a position between the water chamber cover and the tube plate. is fixed directly to the tube sheet, or
Alternatively, a heat exchanger characterized in that the heat exchanger is screwed onto a stud bolt directly fixed to the tube sheet. 2. The heat exchanger according to claim 1, wherein the water chamber cover is rotatably supported by the tube plate via a hinge so that it can be opened and closed.