JPH0645159Y2 - Tube group unit for heat exchanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a heat exchanger tube group unit used in a heat exchanger for exchanging heat between fluids such as gas or liquid.

(Prior Art) In a heat exchanger for exchanging heat between fluids, a heat exchanger configured to flow a fluid for exchanging heat inside and outside a large number of parallel tubes is widely used.

The tube group in the conventional heat exchanger of this type has a structure in which all the tubes are attached to a tube plate having an integrated structure, that is, a non-divided tube plate that constitutes the heat exchanger.

(Problems to be solved by the invention) As described above, in the case of the structure in which all tubes are attached to the tube sheet having an integrated structure, there is no particular problem in production when the number of tubes is small, but the cooling heat When increasing the number of tubes by making the tubes as small as possible, such as in an exchanger, it is technically difficult to securely attach many tubes in close proximity with a tube plate with an integrated structure. Yes, there is an anxiety factor of work continuity, the manufacturing process is serialized, it takes a long time to complete, and it is impossible to respond quickly to diversification,
As a result, manufacturing costs are high.

The present invention has been made in view of the above-mentioned points, and the tube plate is divided into pieces to facilitate the production, realize the miniaturization and the weight reduction, and make the heat exchanger applicable to a wide variety of heat exchangers. An object is to provide a tube group unit for an exchanger.

(Means for Solving the Problem) The gist of the present invention for achieving the above-mentioned object is that a plurality of tubes are attached to a pair of tube plates by opening them outward, The tube plate is a tube group unit for a heat exchanger, characterized in that adjacent tube plates are joined to each other and are divided into regular hexagonal shapes so that they can be arbitrarily combined in parallel.

(Operation) In the present invention configured as described above, the heat exchanger is configured by assembling the required number of tube group units in parallel in the shell of the form designed according to the purpose of use.

However, one fluid introduced into the heat exchanger is caused to flow in the tube group and the other fluid is caused to flow to the outside of the tube group to perform heat exchange between the two fluids.

(Embodiment) An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view of a tube group unit of the present invention.

In the figure, reference numeral 1 denotes a tube sheet, and this tube sheet 1 is formed by dividing a plurality of tube sheets into parallel hexagonal shapes so that they can be joined in parallel. Reference numeral 2 is a large number of tubes attached to a pair of tube sheets 1, and the tubes 2 are closely arranged in parallel and open toward the outside of the tube sheet.

The tube 2 is attached to the tube sheet 1 by pressure bonding, welding, roasting or the like so as to be combined into an integral structure.

Reference numeral 3 is a partition plate that penetrates each tube 2 and is arranged in the middle part of the tube group. Like the tube plate, adjacent partition plates have their edges butted and joined to each other so that the fluid has directionality, which will be described later. It is of a divided construction that forms a path.

Reference numeral 4 in the figure denotes a support rod for the partition plate 3.

The tube group unit of this invention configured as described above,
As shown in FIG. 2 and FIG. 3, the heat exchanger is constructed by being assembled in the shell 5 provided with the coupling frame 6 of the tube sheet 1 and provided with the fluid inlet 7 and the fluid outlet 8.

However, in the shell 5, a flow passage 9 is formed in the shell 5 by the mutual joining of the partition plates 3 of the respective units, which communicates with the fluid inlet 7 and the fluid outlet 8.

In this way, one of the fluids requiring heat exchange, such as cooling water, is caused to flow in the flow path 9 in the shell, and the other fluid, such as steam, is caused to flow into the tube group to perform heat exchange and condensate water.

4 to 6 are unit arrangement diagrams to which the present invention is applied. As shown in the figure, the shell shape is designed in a circular shape, a rectangular shape, etc. according to the purpose of use, and the number of tube group units also functions. They are set together, and their specifications vary widely.

(Effects) According to the present invention having the above configuration, the following effects are obtained.

(1) In manufacturing, in the case of a tube sheet having an integrated structure like a conventional heat exchanger, in order to mount a large number of tubes, it was difficult to perform parallel processing on a plurality of machines in the tube sheet boring process. However, in this invention, the tube group was unitized by using a tube plate that was divided into regular hexagonal shapes so that multiple tube plates could be joined in parallel, so that the tube plates could be drilled in parallel by multiple machines. Machining becomes easy, and the work continuity anxiety factor becomes work within an appropriate work duration, and reliability is also improved.

(2) By prefabricating and stocking a fixed tube group unit using tube plates divided into regular hexagonal shapes, it is possible to reduce the size and weight, and to respond to a wide variety of products. The number of manufacturing days can be shortened and the manufacturing cost can be reduced.

(3) When a failure occurs, the function can be restored by replacing each unit, which is excellent in maintainability.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view of the present invention, FIG. 2 is a sectional view of a state in which the shell is assembled, FIG. 3 is a front view of the same, and FIGS. 4 to 6 are unit arrangement diagrams to which the present invention is applied. is there. 1 ... Tube plate, 2 ... Tube, 3 ... Partition plate, 4 ... Support rod, 5
... shell, 6 ... coupling frame, 7 ... fluid inlet, 8 ... fluid outlet,
9 ... Flow path.

Claims (1)

[Scope of utility model registration request] 1. A plurality of tubes are attached to a pair of tube sheets by opening the tube sheets outwardly, and the tube sheets are joined together with adjacent tube sheets so that they can be arbitrarily combined in parallel. A tube group unit for a heat exchanger, characterized by being divided into hexagonal shapes.