CN204421687U - A kind of U-tube arrangement mounting structure of tubular sheet heat exchanger - Google Patents

Abstract

The utility model relates to a U-shaped tube arrangement and installation structure of a tube-plate heat exchanger, which comprises a tube plate and a U-shaped tube. There are multiple tube holes, and multiple rows of U-shaped tubes are installed on the tube plate. The two ends of each U-shaped tube are respectively installed in the tube holes on both sides of the partition groove. The tube holes inserted at both ends are misplaced. The utility model is a U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger with scientific and ingenious design and a simple and reasonable structure. The installation structure can increase the number of tubes, increase the heat exchange area, reduce the difficulty of simmering tubes, and improve Production efficiency, good results have been obtained in production applications.

Description

U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger

technical field

The utility model relates to the technical field of tube-sheet heat exchangers, in particular to a U-shaped tube arrangement and installation structure of the tube-sheet heat exchanger.

Background technique

In the tube heat exchanger, it mainly reflects the heat exchange problem of two kinds of cold and hot fluids, that is, the problem of large and small heat exchange area of the heat exchanger. The minimum bending of the U-shaped pipe elbow section is stipulated in GB151-1999 Radius R, R=1/2H. In practical applications, tube and tube heat exchangers often encounter the following problems: 1. The diameter of the tubes is small, the number of tubes on the tube sheet is small, and the heat transfer area is small; 2. The minimum bending of the U-shaped tube bend section The radius R is small, and it is not easy to simmer the tube in the actual production operation.

Contents of the invention

The purpose of the utility model is to make up for the deficiencies of the prior art, and to provide a U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger that can increase the heat exchange area and reduce the difficulty of simmering the tubes.

The purpose of this utility model is achieved by the following technical means:

A U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger, including a tube plate and U-shaped tubes, a partition groove is formed in the middle of the tube sheet, and a plurality of tubes are evenly distributed on the tube sheets on both sides of the partition groove. Holes, multiple rows of U-shaped tubes are installed on the tube plate, and the two ends of each U-shaped tube are respectively installed in the tube holes on both sides of the partition groove. The tube holes inserted at both ends are misplaced.

Moreover, the two ends of the first U-shaped tube on the left side of the first row are respectively inserted into the first tube hole on the upper side and the third tube hole on the lower side of the partition groove, and the second tube hole on the left side of the first row The two ends of the two U-shaped pipes are respectively inserted in the second pipe hole on the upper side of the dividing plate groove and the fourth pipe hole on the lower side, and the other U-shaped pipes in the first row are installed in the same manner.

Advantage and positive effect of the present utility model are:

1. The first row of U-shaped tubes in this arrangement and installation structure is arranged obliquely, and its hypotenuse is the minimum bending radius. Therefore, compared with the traditional vertical arrangement method, this structure can be adopted under the condition of obtaining the same minimum bending radius It is equivalent to reducing the center distance H of the adjacent tubes on both sides of the partition groove, so the number of tubes in the tube sheet is increased, and finally the heat exchange area of the tube-and-tube heat exchanger is increased, and the heat exchange effect is enhanced.

2. This arrangement and installation structure increases the minimum bending radius C of the U-shaped tube, and the stewing tube is easy to operate, thereby reducing the difficulty of operation, improving production efficiency and ensuring product quality.

3. The utility model is a U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger with scientific and ingenious design and a simple and reasonable structure. This installation structure can increase the number of tubes, increase the heat exchange area, and reduce the difficulty of simmering tubes , Improve production efficiency, and have achieved good results in production applications.

Description of drawings:

Fig. 1 is a tube bundle arrangement diagram of the present utility model;

Fig. 2 is a tube layout diagram of the utility model.

Detailed ways

The embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings; it should be noted that the present embodiments are descriptive, not restrictive, and cannot limit the protection scope of the present utility model with this.

A U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger, including a tube sheet 3 and U-shaped tubes, a partition plate groove 5 is formed in the middle of the tube sheet, and multiple tube sheets are evenly distributed on the tube sheets on both sides of the partition plate groove. There are four tube holes 4, multiple rows of U-shaped tubes are installed on the tube plate, and the two ends of each U-shaped tube are respectively installed in the tube holes on both sides of the partition groove.

The innovation of the utility model is that: the U-shaped tubes 2 located in the first row are installed obliquely, and the tube holes inserted at both ends are misplaced, not symmetrically arranged. That is: the two ends of the first U-shaped tube on the left side of the first row are respectively inserted into the first tube hole on the upper side of the partition groove and the third tube hole on the lower side, and the second U-shaped tube on the left side of the first row The two ends of the U-shaped tubes are respectively inserted into the second tube hole on the upper side of the partition groove and the fourth tube hole on the lower side, and so on for the other U-shaped tubes in the first row. The U-shaped pipes 1 of other rows still adopt the traditional vertical installation structure.

The working principle of the utility model is:

The first row of U-shaped pipes is arranged in an oblique dislocation, and its minimum bending radius is the hypotenuse C of a right triangle, that is, the right triangle in Figure 2. Taking the distance H between the centers of adjacent tubes on both sides of the partition plate groove in the tube plate and the distance A between the three tube holes in the first row of tube holes as the right-angle side, and C as the hypotenuse (as shown in Figure 2), use the Pythagorean theorem The principle can be obtained C.

It can be seen from the above that, under the condition that the minimum bending radius C of the elbow section of the first row of U-shaped tubes meets the processing requirements, the first row of U-shaped tubes can be placed in the center of the adjacent tubes on both sides of the partition plate groove in the tube sheet. The distance H is appropriately reduced. Since the first row of U-shaped tubes on both sides of the partition groove reduces the center distance H of adjacent tubes, the distance between the adjacent tube centers of other rows of U-shaped tubes on both sides of the partition groove can also be reduced accordingly, and the pipe layout can be more compact , so more U-shaped tubes can be arranged on the tube sheet with the same area, thereby increasing the heat exchange area.

Claims (2)

1. A U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger, including a tube plate and U-shaped tubes, a partition groove is made in the middle of the tube sheet, and multiple tube sheets are evenly distributed on the tube sheets on both sides of the partition groove. Two tube holes, multiple rows of U-shaped tubes are installed on the tube plate, and the two ends of each U-shaped tube are respectively installed in the tube holes on both sides of the partition groove. , the tube holes inserted at both ends are misplaced. 2. The U-shaped tube arrangement and installation structure of a tube-sheet heat exchanger according to claim 1, characterized in that: the two ends of the first U-shaped tube on the left side of the first row are respectively inserted into the partition In the first tube hole on the upper side of the plate slot and the third tube hole on the lower side, the two ends of the second U-shaped tube on the left side of the first row are respectively inserted into the second tube hole and the lower tube hole on the upper side of the partition slot. In the fourth tube hole on the side, the installation method of other U-shaped tubes in the first row can be deduced by analogy.