CN206176330U - Flexible thin pipe board of strenghthened type - Google Patents

Abstract

The utility model relates to the technical field of high-temperature gas heat exchangers, in particular to a reinforced flexible thin tube plate structure of a high-parameter waste heat boiler. A reinforced flexible thin tube sheet structure comprises a thin tube sheet (1), a knuckle (2), a connecting ring (3), and a reinforcement plate (4); the knuckle (2) and the tube box interface (2‑1) Welded with shell shell (6), elbow (2) shell interface (2‑2) welded with shell shell (6), elbow (2) tube sheet interface (2‑4) and thin tube sheet (1) welding; one end of the connecting ring (3) is welded with the toggle (2) reinforced interface (2-3), and the other end of the connecting ring (3) is welded with the reinforcing plate (4); the reinforcing plate (4 ) is welded to the thin tube sheet (1), the heat exchange tube (5) is welded to the thin tube sheet (1), and each component is welded to each other to form a whole. The utility model is innovatively designed on the basis of flexible thin tube sheets, which not only meets the needs of reducing the temperature difference stress of the tube sheet, absorbs thermal expansion, but also reduces its stress level, has no stress concentration, and has the characteristics of simple structure and long life. It is suitable for various types of shell-and-tube waste heat boilers, especially for vertical shell-and-tube waste heat boilers.

Description

A reinforced flexible thin tube sheet

technical field

The utility model relates to the technical field of high-temperature gas heat exchangers, in particular to a reinforced flexible thin tube plate structure of a high-parameter waste heat boiler.

Background technique

The shell-and-tube heat exchanger has the characteristics of compact equipment and convenient operation, and is widely used in the field of waste heat recovery. However, the tube-sheet structure of ordinary shell-and-tube heat exchangers has the disadvantages of too large thickness and high rigidity, and cannot adapt to the working environment where there is a large temperature difference between the high-temperature hot-side medium and the cold-side medium.

At present, in order to overcome the above shortcomings, the shell-and-tube waste heat boiler generally adopts a flexible thin tubesheet structure, which can reduce the temperature difference stress in the thickness direction of the tubesheet and reduce the stress level of the tubesheet and heat exchange tube joints. However, due to the thin thickness and poor stiffness of the flexible thin tube sheet, when the number of heat exchange tubes is large and the length of the heat exchange tube is long, the flexible thin tube sheet cannot meet the harsh working conditions of high temperature and high pressure.

Utility model content

In order to solve the above technical problems, the purpose of this utility model is to provide a flexible thin tube sheet which can not only absorb the thermal expansion between the shell and the heat exchange tube, reduce the temperature difference stress of the tube shell side, but also reduce the The stress level of the weld between the tube and the tube sheet meets the harsh working conditions of high temperature and high pressure, and the tube sheet structure is not limited by the number and length of heat exchange tubes.

The utility model is realized through the following technical solutions:

A reinforced flexible thin tube sheet structure comprises a thin tube sheet (1), a toggle (2), a connecting ring (3), and a reinforcement plate (4); it is characterized in that the tube box interface of the toggle (2) (2-1) is welded with the shell-side cylinder (6), and the toggle (2) shell interface (2-2) is welded with the shell-side cylinder (6), and the toggle (2) tube-sheet interface (2-4 ) is welded with the thin tube plate (1); one end of the connecting ring (3) is welded with the reinforced interface (2-3) of the toggle (2), and the other end of the connecting ring (3) is welded with the reinforcing plate (4); the The connecting rod (4-1) of the reinforcing plate (4) is welded with the thin tube plate (1), and each component is formed into a whole through mutual welding.

The toggle (2) is provided with a tube box interface (2-1), a shell interface (2-2), a reinforced interface (2-3) and a tube sheet interface (2-4), and the toggle (2) The key dimensions of each part of the system need to be determined according to the finite element calculation.

Described reinforcing plate (4) is plate structure, and reinforcing plate (4) is provided with connecting rod (4-1) structure, and the specific size of reinforcing plate (4) and connecting rod (4-1) quantity and size are calculated by get.

The connecting ring (3) is welded with a plurality of reinforcement plates (4) along the circumferential direction, and a plurality of reinforcement plates (4) are welded on the hole bridge position of the thin tube plate (1), and the reinforcement plate (4) The specific quantity needs to be calculated according to the actual working conditions.

Compared with the prior art, the beneficial effects of the utility model are reflected in:

1. The utility model carries out an innovative design on the basis of the flexible thin tube sheet, and the tube sheet and the shell form a whole. On the one hand, it meets the need to use the thin tube sheet to reduce the temperature difference stress due to the large temperature difference between the two sides of the tube shell side. On the other hand, the stress state of the tube sheet, tube sheet and heat exchange tube is improved, and the stress level is reduced;

2. After the flexible thin tube sheet of the utility model is strengthened, the entire tube sheet remains flat, without completeness and stress concentration, which greatly prolongs its service life;

3. The reinforced flexible thin tube sheet proposed by the utility model is not limited by the number and length of heat exchange tubes, and is especially suitable for vertical shell-and-tube waste heat boilers.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a schematic diagram of the connection between the utility model and the waste heat boiler.

Fig. 3 is a schematic diagram of the toggle structure of the utility model.

Fig. 4 is a structural schematic diagram of the reinforcing plate of the present invention.

Fig. 5 is a schematic diagram of the welding position of the reinforcing plate of the present invention.

1 is thin tube plate; 2 is toggle; 3 is connecting ring; 4 is reinforcement plate; 5 is heat exchange tube; 6 is cylinder; 1-1 is heat exchange tube hole; 1-2 is solder joint of connecting rod; 2-1 is the pipe box interface; 2-2 is the shell interface; 2-3 is the reinforcement interface; 2-4 is the tube plate interface; 4-1 is the connecting rod.

detailed description

The utility model will be described in further detail below in conjunction with specific embodiments.

Referring to Fig. 1, Fig. 2, Fig. 3, Fig. 4 and Fig. 5, a reinforced flexible thin tube sheet structure includes a thin tube sheet (1), a toggle (2), a connecting ring (3), a reinforcing plate (4 ) composition; elbow joint (2) pipe box interface (2-1) is welded with shell side cylinder (6), toggle joint (2) shell interface (2-2) is welded with shell side cylinder body (6), elbow joint Section (2) tube sheet interface (2-4) is welded with thin tube sheet (1); one end of the connecting ring (3) is welded with toggle joint (2) reinforced interface (2-3), and the connecting ring (3) The other end is welded with the reinforcing plate (4); the connecting rod (4-1) of the reinforcing plate (4) is welded with the thin tube plate (1), and the heat exchange tube (5) and the thin tube plate (1) are welded, each Parts are welded together to form a whole.

The toggle (2) is provided with a tube box interface (2-1), a shell interface (2-2), a reinforced interface (2-3) and a tube sheet interface (2-4), and the toggle (2) The key dimensions of each part of the system need to be determined according to the finite element calculation.

Described reinforcing plate (4) is plate structure, and reinforcing plate (4) is provided with connecting rod (4-1) structure, and the specific size of reinforcing plate (4) and connecting rod (4-1) quantity and size are calculated by get.

The connecting ring (3) is welded with a plurality of reinforcement plates (4) along the circumferential direction, and the solder joints (1 -2) There are multiple reinforcing plates (4) welded on it, and the specific number of reinforcing plates (4) needs to be calculated according to the actual working conditions.

Claims (5)

1. A reinforced flexible thin tubesheet structure, comprising a thin tubesheet (1), a toggle (2), a connecting ring (3), and a stiffener (4); it is characterized in that the toggle (2) The pipe box interface (2-1) is welded to the shell-side cylinder (6), the toggle (2) shell interface (2-2) is welded to the shell-side cylinder (6), and the toggle (2) tube-sheet interface ( 2-4) Welding with the thin tube plate (1); one end of the connecting ring (3) is welded with the reinforced interface (2-3) of the toggle (2), and the other end of the connecting ring (3) is connected with the reinforcing plate (4) Welding: the connecting rod (4-1) of the reinforcing plate (4) is welded to the thin tube plate (1), and each component is formed into a whole through mutual welding. 2. A reinforced flexible thin tube plate structure according to claim 1, characterized in that the toggle (2) is provided with a tube box interface (2-1), a shell interface (2-2) , Reinforced interface (2-3) and tube-sheet interface (2-4). 3. A reinforced flexible thin tube plate structure according to claim 1, characterized in that the reinforcing plate (4) is a plate-shaped structure, and a connecting rod (4-1) is arranged on the reinforcing plate (4) structure. 4. A reinforced flexible thin tube plate structure according to claim 1, characterized in that the connecting ring (3) is welded with a plurality of reinforcing plates (4) along the circumferential direction. 5. A reinforced flexible thin tube plate structure according to claim 1, characterized in that a plurality of reinforcing plates (4) are welded at the hole bridge positions of the thin tube plate (1).