CN215491270U

CN215491270U - Structure for preventing fin damage of tube bundle of built-in cooler

Info

Publication number: CN215491270U
Application number: CN202023300833.XU
Authority: CN
Inventors: 胡佳丽
Original assignee: Carrerever Heat Transfer Jiangsu Co ltd
Current assignee: Carrerever Heat Transfer Jiangsu Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2022-01-11
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a fin damage prevention structure of a built-in cooler tube bundle, which comprises a fixed tube plate, a floating tube plate, side walls, support plates, heat exchange tubes and fins, wherein two ends of each side wall are respectively connected with the fixed tube plate and the floating tube plate, the support plates which are parallel to the fixed tube plate or the floating tube plate are uniformly distributed in the side wall between the fixed tube plate and the floating tube plate and are 4, the fins are distributed between the adjacent support plates and penetrate through the tube holes of the fixed tube plate to be fixed by the heat exchange tubes extending to the tube holes of the floating tube plate, L-shaped steel angles are welded on the inner sides of the wall plates and the tubes, one edge of each L-shaped steel angle is welded with the tube, the lower edge of each L-shaped steel angle is welded with the wall plate, and the other edge of each L-shaped steel angle blocks the end part of the fin. Because the angle steel is welded at the upper end of the wallboard and the corresponding position of the pipe, when the medium fluid flows inwards from the pipe side on the wallboard, the impact of the medium fluid on the end part of the fin can be avoided, the reduction of the heat exchange efficiency is avoided, the working efficiency of the cooler is improved, and the buffering effect is achieved.

Description

Structure for preventing fin damage of tube bundle of built-in cooler

Technical Field

The utility model relates to the technical field of cooler tube bundles, in particular to a fin damage prevention structure of a built-in cooler tube bundle.

Background

The tube bundle of the built-in plate fin type cooler is widely used in the industries of petroleum, chemical industry, natural gas and the like, and compared with a shell-and-tube type heat exchanger, the tube bundle of the built-in plate fin type cooler has small volume and light weight under the condition of the same heat exchange area, and is one of novel high-efficiency heat exchangers

The core of the plate-fin tube bundle lies in the fins, and due to the unique structure of the fins, the fins continuously disturb the fluid to continuously break the boundary layer, so that the heat exchange coefficient is increased.

The medium fluid can generate great impact on the fins when entering the tube bundle of the built-in plate cooler, and the damage to the two side edges of the fins is serious. The traditional method for preventing the fin from being damaged by impact is to glue both sides of the fin at a fluid inlet so that the fin forms a whole to achieve the aim of preventing the fin from being damaged. However, in the long-term use process, the fin impact damage prevention effect achieved by gluing is not good enough, and two ends of the fin are still damaged greatly.

Therefore, a new technique is sought to solve the problems mentioned in the background of the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fin damage prevention structure for a built-in cooler tube bundle, which aims to solve the problem that the fins in the background technology are impacted and the corners of two ends of the fins are greatly damaged.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a fin damage structure is prevented to built-in cooler tube bank, this built-in cooler tube bank includes fixed tube sheet, unsteady tube sheet, side wall, backup pad, heat exchange tube and fin, fixed tube sheet and unsteady tube sheet are connected respectively to the side wall both ends, evenly distributed has the backup pad with fixed tube sheet or unsteady tube sheet parallel arrangement in the side wall between fixed tube sheet and the unsteady tube sheet, be connected through first fastener between side wall and the backup pad, it is adjacent distribute the fin between the backup pad to penetrate through the tube hole by fixed tube sheet, the heat exchange tube that extends to the tube hole of unsteady tube sheet is fixed, the welding has L angle steel on the side wall of fin tip.

Preferably, an expansion rod is filled in the heat exchange tube, and expansion beads are arranged at the front end of the expansion rod.

Preferably, the side wall comprises a wall plate, a connecting plate, a skirt edge, a rib plate and a pipe, the left end and the right end of the wall plate are connected with the fixed pipe plate and the floating pipe plate through the connecting plate, the rib plate and the wall plate are welded together and then are fixedly connected with the supporting plate through a first fastener, the rib plate and the wall plate are integrally provided with the pipe, and the skirt edge is arranged below the rib plate and the wall plate.

Preferably, the inner sides of the wall plate and the tubes are welded with L-shaped angle steel, one edge of the L-shaped angle steel is welded with the tubes, the lower edge of the L-shaped angle steel is welded with the wall plate, and the other edge of the L-shaped angle steel blocks the end parts of the fins.

Compared with the prior art, the utility model has the beneficial effects that:

(1) in this built-in cooler tube bank device, owing to welded the angle steel in the upper end of wallboard and the corresponding position of pipe, when the medium fluid was inwards flowed from that side of pipe on the wallboard, can avoid the impact of medium fluid to the fin tip, avoid heat exchange efficiency's reduction to improve the work efficiency of cooler, played the effect of buffering.

Drawings

FIG. 1 is a front view of an internal cooler tube bundle fin damage prevention structure of the present invention;

FIG. 2 is a top view of an internal cooler tube bundle fin damage prevention structure of the present invention;

FIG. 3 is a cross-sectional view of a heat exchange tube with an internal cooler tube bundle fin damage prevention structure of the present invention;

FIG. 4 is a schematic view of the direction AA in an anti-fin damage structure for a tube bundle with an internal cooler according to the present invention;

FIG. 5 is an enlarged view of the angle iron of FIG. 4 according to the present invention;

fig. 6 is a perspective view of an anti-fin damage structure of a built-in cooler tube bundle according to the present invention.

In the figure: 1. fixing the tube plate; 2. a floating tube sheet; 3. a support plate; 4. a heat exchange pipe; 5. a fin; 6. a wallboard; 7. a connecting plate; 8. a skirt edge; 9. a rib plate; 10. a tube; 11. a first fastener; 12. expanding rods; 13. a tube hole; 14. l-shaped angle steel; 15. and (5) expanding the beads.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, an embodiment of the present invention is shown: a built-in cooler tube bundle fin damage prevention structure comprises a fixed tube plate 1, a floating tube plate 2, side walls, support plates 3, heat exchange tubes 4 and fins 5, wherein two ends of each side wall are respectively connected with the fixed tube plate 1 and the floating tube plate 2, the support plates 3 which are arranged in parallel with the fixed tube plate 1 or the floating tube plate 2 are uniformly distributed in the side walls between the fixed tube plate 1 and the floating tube plate 2, the side walls are connected with the support plates 3 through first fastening pieces 11, the fins 5 are distributed between the adjacent support plates 3 and are fixed through the heat exchange tubes 4 which are inserted into tube holes 13 of the fixed tube plate 1 and extend to the tube holes 13 of the floating tube plate 2, L-shaped angle steel 14 is welded on the side walls at the end parts of the fins 5, the support plates 3 are added inside the side walls, and the heat exchange tubes 4 inserted into the fixed fins 5 are supported to avoid deformation; the L-shaped angle 14 can avoid the impact of the medium fluid on the end of the fin 5, and has a buffering effect.

Add in the heat exchange tube 4 and be filled up and have expander roll 12, the expander roll 12 front end is provided with expand pearl 15, because the diameter ratio heat exchange tube 4 of expander roll 12 is big, from this, expander roll 12 adds and is filled up in heat exchange tube 4, expands the cylinder tangent plane of heat exchange tube 4 for heat exchange tube 4 closely laminates with fin 5, and the existence of expand pearl 15 is used for choosing heat exchange tube 4, the adding of expander roll 12 of being convenient for.

The side wall includes wallboard 6, connecting plate 7, shirt rim 8, gusset 9 and pipe 10, and both ends pass through connecting plate 7 and are connected with fixed tube sheet 1 and unsteady tube sheet 2 about wallboard 6, and

gusset

9 and 6 welding are whole again and are passed through first fastener 11 fixed connection with backup pad 3, and gusset 9 is provided with pipe 10 with wallboard 6 on the whole, is provided with shirt rim 8 under. Rib plate 9 and wallboard 6 weld into an organic whole, rethread first fastener 11 and backup pad fixed connection, and the intensity of wallboard 6 has been strengthened to the thickness of gusset 9, makes it be connected more reliably with backup pad 3.

The inner sides of the wall plate 6 and the pipe 10 are welded with L-shaped angle steel 14, one edge of the L-shaped angle steel 14 is welded with the pipe 10, the lower edge of the L-shaped angle steel is welded with the wall plate 6, and the other edge of the L-shaped angle steel blocks the end part of the fin 5.

The fin 5 is made of aluminum alloy, which has the advantages of fast heat dissipation, low cost and low weight, but the aluminum alloy material is soft and is easy to deform and damage under impact, therefore, when the medium fluid flows inwards from the side of the wall plate 6 where the tubes 10 are welded, the fluid flow speed is high, the fluid can impact the fins 5, especially the impact damage at the positions, close to the wall plate 6, of the two ends of the fins 5 is larger, great damage is caused, the heat transfer performance is influenced, the damage of the fluid to the two ends of the fins is avoided or reduced, an L-shaped angle iron 14 is welded inside the fluid inlet side wall plate 6, one end of the L-shaped angle iron 14 is welded with the pipe 10 and the wall plate 6, the other end is blocked at the end part of the fin 5, can avoid the direct impact to 5 tip of fin of fluid, play the buffering effect, compare with traditional beating glue, avoid the direct impact of fluid to the fin, better protection the fin tip.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The utility model provides a fin damage structure is prevented to built-in cooler tube bank which characterized in that: this built-in cooler tube bank includes fixed tube sheet (1), unsteady tube sheet (2), side wall, backup pad (3), heat exchange tube (4) and fin (5), fixed tube sheet (1) and unsteady tube sheet (2) are connected respectively to the side wall both ends, evenly distributed has backup pad (3) with fixed tube sheet (1) or unsteady tube sheet (2) parallel arrangement in the side wall between fixed tube sheet (1) and the unsteady tube sheet (2), be connected through first fastener (11) between side wall and backup pad (3), it is adjacent distribute fin (5) between backup pad (3) to penetrate through tube hole (13) by fixed tube sheet (1), heat exchange tube (4) that extend to tube hole (13) of unsteady tube sheet (2) are fixed, the welding has L angle steel (14) on the side wall of fin (5) tip.

2. The fin damage preventing structure of a built-in cooler tube bundle according to claim 1, wherein: an expansion rod (12) is additionally plugged in the heat exchange tube (4), and an expansion bead (15) is arranged at the front end of the expansion rod (12).

3. The fin damage preventing structure of a built-in cooler tube bundle according to claim 2, wherein: the side wall comprises a wall plate (6), a connecting plate (7), a skirt edge (8), a rib plate (9) and a pipe (10), the left end and the right end of the wall plate (6) are connected with a fixed pipe plate (1) and a floating pipe plate (2) through the connecting plate (7), the rib plate (9) and the wall plate (6) are welded to be integrated with a supporting plate (3) through a first fastener (11) in a fixed mode, the pipe (10) is integrally arranged on the rib plate (9) and the wall plate (6), and the skirt edge (8) is arranged below the rib plate (9).

4. The fin damage preventing structure of a built-in cooler tube bundle according to claim 3, wherein: the inside welding of wallboard (6) and pipe (10) has L angle steel (14), L angle steel (14) are welded with pipe (10) on one of them limit, lower and wallboard (6) welding, and the another side blocks fin (5) tip.