JPS6016878Y2 - Heat exchanger - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a heat exchanger.

Conventionally, when cleaning heat exchangers, a method has been used in which a plurality of heat exchangers are sequentially cleaned using a dedicated cleaning device.

However, this method requires troublesome work such as connecting and switching the piping between the cleaning device and the heat exchanger to be cleaned, replacing the processing liquid, and cleaning the inside of the tank associated with this. It required a lot of effort and time.

In view of the above points, it is an object of the present invention to provide a heat exchanger that can significantly reduce the labor and time required for cleaning work.

That is, the present invention provides a pair of cleaning tanks that store different processing liquids, and installs the heat exchanger main body on the pair of cleaning tanks, and also disposes the heat exchanger body from one of the pair of cleaning tanks to the first cleaning tank.
a first processing liquid flow path that returns to one cleaning tank through the circulation pump and the heat exchange pipe of the heat exchanger main body;
A second processing liquid flow path is provided from the other cleaning tank to the other cleaning tank through the second circulation pump and the inside of the shell of the heat exchanger main body,
Since the pair of cleaning devices, which are made up of a cleaning tank and a circulation pump, and the heat exchanger body are integrated, there is no need to change the connection between the cleaning device and the heat exchanger body, and there is no need to change the connection between the cleaning device and the heat exchanger body. Since the inner wall surface of the heat exchange tube and the inner wall surface of the shell of the vessel body can be cleaned at the same time, the labor and time required for cleaning work can be significantly reduced.

Hereinafter, an embodiment in which the heat exchanger according to the present invention is used as a heat exchanger for cooling engine lubricating oil with sea ice in a ship will be described based on the drawings.

In FIGS. 1 and 2, 1 is a tank, and this tank 1 is divided into two by a partition plate 2, forming a pair of cleaning tanks 3a and 3b. , different processing liquids are stored.

A heat exchanger main body 4 is installed on the pair of cleaning tanks 3a, 3b, and the pair of cleaning tanks 3a, 3b also serves as an installation stand for the heat exchanger main body 4.

In addition, the pair of glue leaning tanks 3a, 3b
A support stand 5at5b is protruded from the lower end of the side surface of the
Circulation pumps 6a and 6b are installed on these supports 5a*5b.

As shown in FIG. 3, the heat exchanger main body 4 has heat exchange tubes 8 installed inside a shelf, and seawater is supplied to the heat exchange tubes 8 through piping 9. is discharged through pipe 10.

Furthermore, lubricating oil is supplied to the inside of the shelf through a pipe 11, and this lubricating oil is discharged through a pipe 12.

One cleaning tank 3a of the pair of cleaning tanks 3a, 3b and the piping 9 are communicated by a piping 13 via a first circulation pump 6a and a valve V1, and one cleaning tank 3a and the piping 9 are connected to each other by a piping 13 via a first circulation pump 6a and a valve V1. The tank 3a is communicated with a pipe 14 via a valve V2.

The heat exchange tube 8 and one cleaning tank 3a are
A drain pipe 16 equipped with a valve V4 is connected to the pipe 15 through a valve v3.
is connected.

Further, the other cleaning tank 3b and the piping 12 are connected to a second circulation pump 6b and a valve V5 by a piping 17.
The piping 11 and the other cleaning tank 3b are connected to each other via the valve V through the piping 18.
6.

The bottom of the shelf and the other cleaning tank 3b are communicated by a pipe 19 via a valve V7, and a drain pipe 20 equipped with a valve V8 is connected to the pipe 19.

When performing cleaning work, first stop the supply of seawater to the heat exchange tube 8 and the supply of lubricating oil into the shelf, open the valve V4, and drain the seawater in the heat exchange tube 8 through the drain pipe 16. , open the valve 8 and drain the lubricating oil inside the shelf through the drain pipe 20.

Next, valve V4. Close valve V8 and close valve V1. ■Open valve v5 and operate the first circulation pump 6a, and
．． V6 is opened and the second circulation pump 6b is operated.

As a result, the processing liquid in one cleaning tank 3a flows into the heat exchange tube 8 through the pipe 13.9, and returns from the heat exchange pipe 8 to the first cleaning tank 3a through the pipes 10 and 14. The processing liquid is circulated through the processing liquid flow path.

The processing liquid in the other cleaning tank 3b flows into the shelf through piping 17.12, and from inside the shelf flows through piping 11.18 into the other cleaning tank 3b.
The treatment liquid is circulated through the second processing liquid flow path returning to b.

During this time, the inner wall surface of the heat exchange tube 8 and the inner wall surface of the shelf are cleaned by the treatment liquid.

After a predetermined period of time has passed, the circulation pumps 6a and 6b are stopped and the half v1. V2. v5. Close valve V6, open valve V3 to collect the processing liquid in heat exchange tube 8 through pipe 15 into one cleaning tank 3a, and open valve v7.
is opened and the processing liquid is collected into the other cleaning tank 3b through the pipe 19 inside the shelf.

The cleaning work is thus completed. It goes without saying that the cleaning work for the inner wall surface of the heat exchange tubes 8 and the cleaning work for the inner wall surface of the shelf can be performed separately as necessary.

As explained above, according to the heat exchanger according to the present invention, since the pair of cleaning devices formed by unitizing the cleaning tank and the circulation pump and the heat exchanger main body are integrally configured, the cleaning device and the heat exchanger body are integrated. There is no need to change connections with the heat exchanger body, and the inner wall surface of the heat exchange tubes and the inner wall surface of the shell of the heat exchanger body can be cleaned at the same time, greatly reducing the labor and time required for cleaning work. can be reduced.

In addition, since the heat exchanger bodies are installed on a pair of cleaning tanks and the cleaning tanks are also used as installation stands for the heat exchanger bodies, the whole can be made compact and the installation area is small.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a plan view of a heat exchanger, FIG. 2 is a front view thereof, and FIG. 3 is a piping system diagram. 3a, 3b...Cleaning tank, 4...
... Heat exchanger body, 6a, 6b ... Circulation pump, 7 ... Shell, end ... Heat exchange tube, 9
~14. 17. 18...Piping, vl, V2
．． ■5. V6...Valve.

Claims (1)

[Scope of utility model registration request] A pair of cleaning tanks for storing different processing liquids are provided, and a heat exchanger main body is installed on the pair of cleaning tanks, and one of the cleaning tanks is connected to the first circulation pump and the A first process liquid flow path that returns to one cleaning tank through the heat exchange pipe of the heat exchanger body, and a second process liquid flow path that passes from the other gluing/leaning tank to the second circulation pump and the inside of the shell of the heat exchanger body and the other. A heat exchanger characterized in that a second processing liquid flow path returns to the cleaning tank of the heat exchanger.