CN220398337U

CN220398337U - Anti-impact structure and shell-and-tube heat exchanger

Info

Publication number: CN220398337U
Application number: CN202322056302.8U
Authority: CN
Inventors: 韩军; 姜红梅; 王飞; 陈悦
Original assignee: Beijing Guangsha Huanneng Technology Co ltd
Current assignee: Beijing Guangsha Huanneng Technology Co ltd
Priority date: 2023-08-02
Filing date: 2023-08-02
Publication date: 2024-01-26
Anticipated expiration: 2033-08-02

Abstract

The utility model relates to the technical field of heat exchangers, and particularly discloses an anti-collision structure and a shell-and-tube heat exchanger. When the medium flows into the tube shell through the connecting tube, the medium can contact the guide surface on the grid plate, and as the guide surface is in an included angle with the first direction of the medium inflow, the flow direction of the medium can be changed, so that erosion of the medium to the tube bundle near the inlet of the connecting tube is alleviated, and meanwhile, the medium naturally flows down from the gap between the grid plate and the grid plate, so that the impact action of the medium on the grid plate is smaller, and the service life of the anti-impact structure is prolonged.

Description

Anti-impact structure and shell-and-tube heat exchanger

Technical Field

The utility model relates to the technical field of heat exchangers, in particular to an anti-impact structure and a shell-and-tube heat exchanger.

Background

The shell-and-tube heat exchanger comprises a shell and a tube bundle, wherein the tube bundle is arranged in the shell, the tube bundle is filled with high-temperature fluid, the shell is filled with low-temperature fluid, or the tube bundle is filled with low-temperature fluid, the shell is filled with high-temperature fluid, and heat between the high-temperature fluid and the low-temperature fluid is conducted through the tube wall of the tube bundle, so that heat exchange between the high-temperature fluid and the low-temperature fluid is realized.

In the actual heat exchange process, when a medium flows into the tube shell through the connecting tube, the heat exchange tube close to the inlet of the connecting tube is washed by the high-speed medium, so that corrosion and vibration of the heat exchange tube are caused, a rectangular or circular flat plate is usually additionally arranged at the inlet of the connecting tube to slow down the action of the medium, and as the anti-shock structures are planar, the medium can be directly blocked when the medium flows in and is easy to shake up and down, the medium is easy to shock to deform even fall off in long-time operation, and the service life is short.

Disclosure of Invention

The utility model aims to provide an anti-collision structure and a shell-and-tube heat exchanger, which can change the flow direction of a medium, alleviate the scouring of the medium to a heat exchange tube, and do not directly produce a blocking effect on the medium, so that the service life is effectively prolonged.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

in one aspect, the utility model provides a shock-proof structure for being installed in a pipe shell, the pipe shell is provided with a connecting pipe, the shock-proof structure is opposite to an inlet of the connecting pipe, and a center line of the inlet of the connecting pipe is along a first direction, wherein the shock-proof structure comprises:

the grid plates are arranged in parallel along the second direction at intervals, each grid plate is provided with a guide surface, and the guide surfaces form an included angle with the first direction and are used for contacting a medium entering from the connecting pipe;

the connecting plates are arranged at intervals along a third direction, each connecting plate is fixedly connected with the grid plates, and the first direction, the second direction and the third direction are perpendicular to each other;

the fixing parts are arranged, one ends of the fixing parts are connected with the inner wall of the tube shell, and the other ends of the fixing parts are connected with one connecting plate.

Wherein, a supporting piece is connected between any two adjacent grid plates.

The support piece comprises a first support plate and a second support plate, wherein the first support plate and the second support plate are arranged at two ends of two adjacent grid plates along the third direction at intervals.

The end faces of the first support plate and the end faces of the second support plate are parallel to the first direction.

Wherein the guide surface is square and is provided with a first edge and a second edge, the first edge and the first direction form an included angle, the second edge is perpendicular to the first direction, the length of the first edge is A, the distance between any two adjacent grid plates along the second direction is B,

wherein A is less than 50mm.

Wherein, the contained angle between grid tray and the first direction is 45.

The projection of the anti-impact structure along the first direction is round or square.

Wherein the inlet of the adapter is located in the projection range of the impact-resistant structure along the first direction.

On the other hand, the utility model also provides a shell-and-tube heat exchanger, which comprises a connecting tube, a shell and the anti-impact structure in any scheme, wherein the anti-impact structure is fixedly connected to the inner wall of the shell, the connecting tube is arranged on the shell, and the anti-impact structure is opposite to the inlet of the connecting tube.

The beneficial effects of the utility model are as follows:

the utility model provides an anti-impact structure and a shell-and-tube heat exchanger, wherein the anti-impact structure is arranged in a shell, a connecting tube is arranged on the shell, the anti-impact structure is opposite to an inlet of the connecting tube, a central line of the inlet of the connecting tube is along a first direction, the anti-impact structure comprises a plurality of grid plates, a plurality of connecting plates and a plurality of fixing pieces, the grid plates are arranged in parallel and at intervals along a second direction, each grid plate is provided with a guide surface which forms an included angle with the first direction and is used for contacting a medium entering from the connecting tube, the connecting plates are arranged at intervals along a third direction, each connecting plate is fixedly connected with the grid plates, the first direction and the second direction are perpendicular to the third direction, one end of the fixing pieces is connected with the inner wall of the shell, and the other end of the fixing pieces is connected with one connecting plate. So set up, when the medium flows into the inside of the tube shell through taking over, the medium can contact the guide surface on the grid tray, because the guide surface is the contained angle with the first direction that the medium flowed in, it can change the flow direction of medium, and then alleviate the medium and to being close to the washing away and the erosion of taking over import department tube bank, fluid entrance resistance loss is littleer, and fluid distribution is even, simultaneously, because a plurality of grid trays are parallel and the interval sets up, it can not produce direct blocking effect to the medium, the medium can flow down naturally from the space between grid tray and the grid tray, make the grid tray suffer the impact effect of medium less, thereby prolonged the life of scour protection structure.

Drawings

FIG. 1 is a schematic view of a shock-resistant structure according to the present utility model;

fig. 2 is a partial enlarged view of a portion a in fig. 1.

Wherein:

1. a tube shell; 2. connecting pipe; 3. a grid plate; 31. a guide surface; 4. a connecting plate; 5. a fixing member; 6. a first support plate; 7. and a second support plate.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.

Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, and may be, for example, either fixed or removable; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Unless expressly stated or limited otherwise, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact with each other by way of additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1 to 2, this embodiment provides a shock-proof structure, this shock-proof structure is used for installing in the inside of tube shell 1, be equipped with on tube shell 1 and take over 2, the shock-proof structure is just to taking over 2's import, take over 2's imported central line is along first direction, this shock-proof structure includes a plurality of grid plates 3, a plurality of connecting plates 4 and a plurality of mounting 5, a plurality of grid plates 3 are parallel and the interval sets up along the second direction, every grid plate 3 all has guide face 31, guide face 31 is the contained angle with first direction, and be used for contacting the medium that gets into by taking over 2, a plurality of connecting plates 4 are along the interval setting of third direction, and every connecting plate 4 all is with a plurality of grid plates 3 fixed connection, first direction, second direction and two liang are perpendicular to third direction, the inner wall of 2 shells 1 is connected to the one end connecting pipe of mounting 5, one connecting plate 4 is connected to the other end of mounting 5. So set up, when the medium flows into inside the tube shell 1 through taking over 2, the medium can contact the guide surface 31 on grid tray 3, because guide surface 31 is the contained angle with the first direction that the medium flowed into, it can change the flow direction of medium, and then alleviate the medium and wash away and erode to being close to taking over 2 import department tube bank, fluid entrance resistance loss is littleer, and fluid distribution is even, simultaneously, because a plurality of grid trays 3 are parallel and the interval sets up, it can not produce direct blocking effect to the medium, the medium can naturally flow down from the space between each adjacent grid tray 3, make grid tray 3 suffer the impact effect of medium less, thereby prolonged the life of scour protection structure. The first direction, the second direction and the third direction are respectively indicated by three arrows in fig. 1. In this embodiment, the number of the grid plates 3, the connecting plates 4 and the fixing members 5 can be set according to specific needs. It should be noted that, in other embodiments, the fixing member 5 may also have one end connected to the tube bundle in the tube shell 1 and the other end connected to one of the connection plates 4.

Optionally, in order to improve the structural strength between two adjacent grids 3, a supporting member is connected between any two adjacent grids 3, and at the same time, by setting the length of the supporting member, the distance between the grids 3 and 3 is achieved. The support member may include one or more support plates spaced apart in the third direction. Illustratively, in the present embodiment, the support member includes a first support plate 6 and a second support plate 7, and the first support plate 6 and the second support plate 7 are disposed at both ends of the adjacent two grid plates 3 in the third direction at intervals. So set up, first backup pad 6, second backup pad 7 enclose with two adjacent grid plates 3 and establish into the anti-flushing mouth, and first backup pad 6 and second backup pad 7 can prevent the medium to escape from the both ends of grid plate 3 along the third direction and flow. Further, the end face of the first support plate 6 and the end face of the second support plate 7 are both parallel to the first direction. It ensures that both the first support plate 6 and the second support plate 7 escape and shunt to the two sides of the grid plate 3 with the largest plate surface constraint medium.

Alternatively, as shown in fig. 2, the guide surface 31 is square and has a first side and a second side, the first side forms an included angle with the first direction, the second side is perpendicular to the first direction, the length of the first side is a, the distance between any two adjacent grid plates 3 along the second direction is B,specifically, A < 50mm. For example, A may be 10mm, 20mm, 30mm or 40mm. The size of a may be appropriately increased for the adapter tube 2 having a larger inner diameter. It should be noted that the guide surface 31 has two first sides arranged in parallel and at a distance, and two second sides arranged in parallel and at a distance, and the two first sides and the two second sides are combined into a square shape.

Specifically, the angle between the louver 3 and the first direction is 45 °. In other embodiments, the angle between the grid 3 and the first direction may be set according to specific requirements.

Optionally, the projection of the impact protection structure in the first direction is circular or square. In this embodiment, the projection of the impact-protection structure is square, and in other embodiments, the shape of the projection may be set according to specific structural requirements. Further, when the projection of the impact-preventing structure along the first direction is square, the side length of the square is set to be L, and when the projection of the impact-preventing structure along the first direction is circular, the radius of the circle is set to be R, and L or R is 50mm larger than the inner diameter of the connecting tube 2.

Optionally, in order to ensure that the medium flowing down from the inlet of the adapter tube 2 is entirely covered onto the impact structure, the inlet of the adapter tube 2 is located within the projection of the impact structure in the first direction.

The embodiment also provides a shell-and-tube heat exchanger, which comprises a connecting tube 2, a shell tube 1 and the anti-impact structure in the scheme, wherein the anti-impact structure is fixedly connected to the inner wall of the shell tube 1, the connecting tube 2 is arranged on the shell tube 1, and the anti-impact structure is opposite to the inlet of the connecting tube 2.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. An anti-impact structure for install in the inside of tube shell (1), be equipped with on tube shell (1) and take over (2), anti-impact structure is just to the import of taking over (2), and the central line of the import of taking over (2) is along first direction, a serial communication port, include:

the grid plates (3) are arranged in parallel and at intervals along the second direction, each grid plate (3) is provided with a guide surface (31), and the guide surfaces (31) form included angles with the first direction and are used for contacting a medium entering from the connecting pipe (2);

the connecting plates (4) are arranged at intervals along a third direction, each connecting plate (4) is fixedly connected with the grid plates (3), and the first direction, the second direction and the third direction are perpendicular to each other in pairs;

the fixing parts (5), one end of each fixing part (5) is connected with the inner wall of the tube shell (1), and the other end of each fixing part (5) is connected with one connecting plate (4).

2. A shock-resistant structure according to claim 1, characterized in that a support is connected between any adjacent two of said grids (3).

3. The impact structure according to claim 2, characterized in that the support member comprises a first support plate (6) and a second support plate (7), the first support plate (6) and the second support plate (7) being disposed at intervals at both ends of the adjacent two grid plates (3) in the third direction.

4. A shock-resistant structure according to claim 3, characterized in that the end faces of the first support plate (6) and the second support plate (7) are both parallel to the first direction.

5. The impact structure according to claim 1, characterized in that said guiding surface (31) is square and has adjacent first and second sides, said first side being at an angle to said first direction, said second side being perpendicular to said first direction, said first side having a length a, the distance between any adjacent two of said grids (3) along said second direction being B,

6. the impact structure of claim 5, wherein a < 50mm.

7. A shock-resistant structure according to any one of claims 1-6, characterized in that the angle between the grid (3) and the first direction is 45 °.

8. The impact structure of any one of claims 1-6, wherein a projection of the impact structure along the first direction is circular or square.

9. A shock-resistant structure according to any one of claims 1-6, characterized in that the inlet of the adapter tube (2) is located within the projection of the shock-resistant structure in the first direction.

10. A shell-and-tube heat exchanger comprising a connecting tube (2), a shell tube (1) and the anti-impact structure as claimed in any one of claims 1 to 9, wherein the anti-impact structure is fixedly connected to the inner wall of the shell tube (1), the connecting tube (2) is arranged on the shell tube (1), and the anti-impact structure is opposite to the inlet of the connecting tube (2).