JPH0241502Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a heat exchanger, and is particularly suitable for integrating the functions of cooling lubricating oil and cooling water for diesel main engines in ships, etc. It concerns exchangers.

"Prior art and its problems" Generally, lubricating oil and cooling water for a ship's diesel main engine are cooled by seawater, but in this case, a heat exchanger as shown in Figure 6 is used. be done. In this example of a heat exchanger, a large number of heat exchanger tubes 6 are housed inside a container (so-called shell) 3,
A heat exchange chamber 7 surrounded by the container 3 and the tube plate 5 at the end of the heat transfer tube 6 is partitioned by a plurality of baffle plates 8, and a fluid (heat transfer medium, e.g. heat medium) is fed from the fluid inlet 9. is caused to flow along a meandering flow path and discharged from the fluid outlet 10, while the (heat transfer medium, e.g. refrigerant) sent from the header 1 as shown by the arrow is sent from the other header 2 via the heat transfer tube 6. Heat exchange is performed by discharging as shown by the arrow.

On the other hand, in order to cool the lubricating oil and cooling water of the main engine, multiple heat exchangers are required, so these heat exchangers are installed on the platform deck etc. in narrow areas such as engine rooms. However, such a method would require significantly longer piping for the cooling seawater, and the auxiliary equipment such as attached pumps, piping, valves, etc. would also need to be connected between the engine room and each heat exchanger. Therefore, problems such as the space occupied by these pipes becomes large and the piping system becomes complicated tend to occur.

"Purpose of the invention and means for achieving it" This invention effectively solves these problems,
The aim is to make it possible to install the heat exchanger in a narrow space such as an engine room, and to reduce the number of man-hours and materials used in assembly and piping work by shortening the piping path. A plurality of containers are provided with a small gap between each header, and a number of heat transfer tubes are supported on the tube plates at both ends of each container so as to pass through a heat exchange chamber in the container. The heat exchanger is a heat exchanger in which both ends of the heat transfer tube are connected to separate chambers arranged by partitioning the hollow part of the header, so that one heat exchanger has multiple heat exchange functions. .

``Embodiment'' Hereinafter, an embodiment of the present invention in a shell and tube heat exchanger will be explained based on FIGS. A pair of tube sheets 5 are attached to both ends of each container 3 so as to close each opening, and a large number of heat transfer tubes 6 are installed between the pair of tube sheets 5. are supported, and are surrounded by these containers 3 and tube sheets 5.
A plurality of baffle plates 8 and fluid inlets and outlets 9 and 10 are provided in B and 7C, respectively, for partitioning them to form a meandering flow path.

In addition, each of the pair of headers 1 and 2 has a hollow section partitioned by a partition wall 11, so that each separation chamber 12 is
A to 12D are arranged, and each of these separation chambers 12A
- 12D are provided with a seawater inlet 13 and a seawater outlet 14 for allowing cooling fluids of different temperatures, ie, seawater, to enter and exit, as will be described later.

In a heat exchanger having such a configuration,
The heat exchange chamber 7A can be used for cooling the main engine lubricating oil, the heat exchange chamber 7B can be used for cooling the main engine jacket cooling water, and the heat exchange chamber 7C can be used for cooling the main engine piston cooling water. As well as,
For example, the heat exchanger tube 6 from the separation chamber 12A to the heat exchange chamber 7A
The seawater temperature reaching the separation chamber 12B via the
When the temperature of the main engine lubricating oil changes from ℃ to 32.9℃,
From 48.8℃ to 45℃, from separation chamber 12C to heat exchange chamber 7
When the temperature of the seawater reaching the separation chamber 12D via the heat transfer tube 6 of the heat exchange chamber 7C changes from 38.4℃ to 45℃, the temperature of the main engine jacket cooling fresh water becomes 85℃.
The temperature of the main engine piston cooling fresh water was increased from 70.6°C to 55°C by heat exchange. Therefore, in order to reuse seawater that has been used once, it is possible to connect the separation chamber 12B to the next separation chamber 12C in series.
Therefore, the length of the piping can be shortened.

In addition, during these heat exchange actions, the small gap 4
This suppresses heat transfer between the containers 3, improves heat exchange efficiency, and reduces the effects of deformation and the like due to differences in thermal expansion. Furthermore, a plurality of heat exchange chambers 7A, 7B,
Since the 7C is arranged and the whole is integrated, it can be treated as one block in which each function is consolidated.

In the illustrated example, there are three heat exchange chambers, but the combination is not limited to this.

"Effects of the Invention" As explained above, in the present invention, a plurality of heat exchange chambers are formed independently by providing a plurality of containers with a small gap between them between a pair of headers. At the same time, both ends of a large number of heat exchanger tubes that penetrated through the heat exchange chamber are connected to each separation chamber arranged by partitioning the hollow part of the header, so that although it is a single heat exchanger, it can be connected to each heat exchange chamber. Since different fluids can be passed through the heat exchanger, the volume of the heat exchanger becomes smaller, and it becomes possible to install the heat exchanger particularly in a narrow space such as the engine room of a ship.

By consolidating multiple functions, the length of the piping system can be shortened.

As a result of the above, the number of man-hours and materials required for assembly and piping work can be reduced.

Strength can be improved by integrating a plurality of heat exchange chambers.

It has the following effects.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a heat exchanger according to an embodiment of the present invention, FIG. 2 is a view taken along the line - in FIG. 1, and FIG. 3 is a view taken along the line - in FIG. , FIG. 4 is a view taken along the - line in FIG. 1, FIG. 5 is a view taken along the V-V line in FIG. 1, and FIG. 6 is a longitudinal sectional view showing a conventional example of a heat exchanger. It is. 1, 2... Header, 3... Container, 4... Small gap, 5... Tube sheet, 6... Heat exchanger tube, 7A, 7B, 7
C...Heat exchange chamber, 9...Fluid inlet, 10...Fluid outlet, 12A to 12D...Separation chamber, 13...Seawater inlet, 14...Seawater outlet.

Claims (1)

[Scope of utility model registration request] A plurality of containers are provided with a small gap between each pair of headers, and a large number of heat transfer tubes are supported on the tube sheets at both ends of each container, penetrating the heat exchange chamber inside the container. . A heat exchanger, wherein both ends of the heat exchanger tube are connected to respective separation chambers arranged to partition a hollow part of the header.