JPS5924196A - Tube cleaning device for heat exchanger - Google Patents

Abstract

PURPOSE:To enable to reduce remarkably the attaching work of containers and improve reliability by a method wherein the containers are attached detachably to a tube plate by a holder plate having holes corresponding to the holes of the tube plate. CONSTITUTION:Tubes 3 in the heat exchanger 1 are attached to the tube plate 2 by means of expanding or the like. The heat exchanger is provided with water chambers 4 at both ends thereof, and fluid flows into the water chamber 4, passes through the tubes 3 and flows out of the water chamber at the reverse side of the heat exchanger. The containers 5 are attached to both ends of the tubes by the holder plate 7 while tube cleaning members 6 are contained in the containers 5. When the direction of flow is reversed to the left by switching a valve connected to the outlet and inlet ports of the water chambers of the heat exchanger, the cleaning members 6 leave the containers 5, clean the inner walls of the tubes 3 as they are flowing and are contained into the containers attached to the opposite (left) side water chamber in the same manner.

Description

[Detailed Description of the Invention] In particular, in cases where storage containers are installed at both ends of the tube and cleaning materials such as brushes or sponges are moved inside the tube, a valve provided at the inlet and outlet of the heat exchanger is used to control the direction of internal fluid flow. The present invention relates to removing dust from a heat exchanger tube i'ifJ, in which the inner wall of the tube is cleaned by reciprocating the cleaning material while switching in the forward and reverse directions at appropriate times.

Conventionally, cleaning material storage containers are installed in the water chambers at both ends of the heat exchanger to accommodate the reciprocation of cleaning materials, but these storage containers are attached to both ends of each individual tube to prevent them from coming off the tubes. Methods of adhering, or cutting 6"1"I on the inner surface of the tube and fixing it by expanding the tube, or making the end of the container a separate elastic structure so that only the end can be removed are used. .

With the method of fixing the storage container, it is difficult to replace the cleaning material if it is damaged, and with the method of making the end part removable, it is possible to maintain the cleaning material. The container body must be attached using methods such as gluing or tube expansion, which is particularly time-consuming when there are a large number of tubes, and attachment methods such as gluing and tube expansion are unreliable. -, cracking due to excessive tube expansion, and disconnection due to insufficient tube expansion.

SUMMARY OF THE INVENTION In order to overcome these drawbacks, it is an object of the present invention to provide a tube cleaning device having a storage container that is highly reliable in installation and easy to install and remove.

To explain in detail, FIG. 1 is a side sectional view of the first embodiment of the present invention, and FIG. 2 is a view taken along the line A-A in FIG. is attached to the tube plate 2 by a method such as tube expansion. There are water chambers 4 at both ends of the heat exchanger, and fluid flows into the water chambers 4, passes through tubes 6, and exits through the ice chamber on the opposite side. A storage container 5 is attached to both ends of the tube by a holding plate 7, and a tube cleaning material 6 is stored in the storage container 5.

In FIG. 1, the flow direction of the fluid in the tube is rightward in the drawing, so the cleaning material is stored in the right storage container 5. Also, the flow flows from the left side to the right side of the diagram, and the flow
The water flows from the storage container 5 to the water chamber 4 on the right side from the small hole 51 of the storage container.
leaks inside. (The ice compartment on the left is not shown.) By switching the knob (not shown) connected to the inlet and exit of the heat exchanger ice compartment, the cleaning material 6 can be reversed to the left.
The water leaves the container 5, flows through the tube 6 while cleaning its inner wall, and is held in a container similarly installed in the water chamber (not shown) on the opposite side (left side).

In this invention, as shown in the drawings, the storage container 5 is attached to the holding plate 7 in advance and fixed to the tube plate 2 with bolts 8 or the like.

The structure of the container is as shown in the figure, with the tube plate connection surface facing outward.
The edges may be bent and the bent portion 52 may be held between the holding plate 7 and the plate 2.

If there are more tubes, cut the retaining plate 7 at 1. It may be divided as shown in II and each section may be attached.

In the figure, reference numeral 41 denotes a flange of the water chamber 4, which is connected to the tube plate 2 with bolts 9.

FIG. 6 is a sectional view of a main part of a second embodiment in which the storage container and the holding plate are integrated, and the storage container 5' and the holding part 7' are integrally molded. In this example, the holding plate portion 7' is inserted between the tube plate 2 and the flange 41 of the water chamber 4.

This invention has such a configuration, and the storage container can be freely attached and removed with a simple configuration, and the time and effort required to pick up the storage container can be greatly reduced.
Kq/ζ is a tube cleaning device that has many effects such as improved reliability.

[Brief explanation of the drawing]

FIG. 1 shows ()l! of the first embodiment of the tube cleaning device of the present invention. I sectional view, Figure 2 is a view taken along the arrow A-A in Figure 1,
FIG. 3 is also a sectional view of the main part of the second embodiment. Explanation of symbols 1...Heat exchanger, 2...Tube plate, 3...
...Tube, 4...Water chamber, 5...
・Storage container, 6.・Cleaning material, 7.・・Retainer,
8, 9... blasphemy, 41... river flange, 51
...hole, 52 ... bending part. Figure 1 Figure 1 A, J Figure 2 Figure 3

Claims (1)

[Claims] (+) A container for tube cleaning material is provided at both ends of the tube of the heat exchanger, and the cleaning material is moved back and forth within the tube using the power of the internal fluid to clean the inner wall of the tube. 1. A tube cleaning device for a heat exchanger, characterized in that the storage container is removably attached to the tube plate by a holding plate having holes corresponding to the tube plate holes. (2) A patented tube cleaning device for a heat exchanger, characterized in that the holding plate is attached to the tube plate with a bolt using screw holes drilled in the tube plate. (3) The tube cleaning device for a heat exchanger as set forth in claim 1, wherein the holding plate is divided into sections for each appropriate number of tubes and attached to each one. (4) The scope of the above claim, characterized in that the storage container has one end bent outward, and the edge is bent and attached by a tube plate and a retaining plate. 2. The heat exchanger tube cleaning device according to claim 1. (5) The above-mentioned retaining plate is squeezed and connected between seven lunges connecting the heat exchanger main body and the ice chamber connected to both ends of the tube. The heat exchanger tube cleaning device according to item 1. (6) The tube cleaning device for a heat exchanger according to claim 1, wherein the storage container and the holding plate are integrally molded.