CN219141577U

CN219141577U - Tubular heat exchanger capable of slowing down maintenance frequency

Info

Publication number: CN219141577U
Application number: CN202223300266.7U
Authority: CN
Inventors: 龙见熙; 杨刚; 李友乾
Original assignee: Guizhou Huajin Aluminum Co ltd
Current assignee: Guizhou Huajin Aluminum Co ltd
Priority date: 2022-12-09
Filing date: 2022-12-09
Publication date: 2023-06-06
Anticipated expiration: 2032-12-09

Abstract

The utility model discloses a tubular heat exchanger capable of slowing down maintenance frequency, which comprises an inner tube (1) and an outer tube (2), wherein a blocking plate (3) is welded at the end part of the outer tube (2), one or more through holes (4) connected with the outer wall of the inner tube (1) are formed in the blocking plate (3), and the liquid inlet end of the inner tube (1) extends out of the outer side of the blocking plate (3) to form an inner tube extension section (5). When the closure plate is connected with the U-shaped pipe through the flange, the inner pipe extension section is positioned in the U-shaped pipe, liquid in the U-shaped pipe collides with the liquid in the U-shaped pipe after the closure plate is reversed to form turbulent flow, the impact on the inner pipe is reduced, the inner pipe is reentered, the maintenance period of the inner pipe at the closure plate can be effectively prolonged, and the service life of the inner pipe is prolonged.

Description

Tubular heat exchanger capable of slowing down maintenance frequency

Technical Field

The utility model relates to a tubular heat exchanger capable of slowing down maintenance frequency, and belongs to the technical field of heat exchanger equipment.

Background

The tubular heat exchanger comprises a sleeve heat exchanger or a shell and tube heat exchanger, wherein the sleeve heat exchanger is formed by sleeving two pipes with different diameters into a concentric sleeve element, a blocking plate for closing an outer pipe is arranged at the end part of the concentric sleeve element, a through hole matched with the outer diameter of the inner pipe is formed in the middle of the blocking plate, and the outer pipe wall of the inner pipe is welded with the hole; meanwhile, the diameter of the blocking plate is larger than that of the outer tube, so that bolt perforation matched with the flange is conveniently formed on the outer side of the blocking plate. When the tube-in-tube heat exchanger is used, the U-shaped bent tubes for the inner tubes of each section of tube-in-tube heat exchanger are sequentially connected with the inner tubes of the adjacent tubes, the connecting equipment is a flange, the outer tube is connected with the outer tubes of the adjacent tubes to form the tube-in-tube heat exchanger group in a use state, the tube-in-tube heat exchanger is a tube-in-tube heat exchanger group in which the outer tubes are sleeved outside the inner tubes, the two ends of the outer tubes are provided with blocking plates, the blocking plates are provided with a plurality of through holes connected with the inner tubes, and the inner tubes of the tube-in-tube heat exchanger of the inner tubes are also connected by the U-shaped bent tubes.

The inner pipe is connected with the blocking plate through the U-shaped bent pipe and the flange through the connecting structure, whether the inner pipe is a sleeve pipe type or a tube type, the problem of abrasion of the inner pipe connected with the blocking plate in the use process can be solved, the existing periodic maintenance method is to periodically weld the connecting area of the blocking plate and the inner pipe in a welding mode, but the problem of overhigh maintenance frequency exists in the existing maintenance mode, and the productivity is affected. If maintenance is performed irregularly, the problem of leakage of the inner tube mill can exist, and when the inner tube is worn, the outer tube is required to be cut for welding, so that maintenance cost and time are increased.

Disclosure of Invention

In view of the above, the present utility model aims to provide a tubular heat exchanger capable of reducing maintenance frequency, which can overcome the defects of the prior art.

The technical scheme of the utility model is as follows: the tubular heat exchanger capable of slowing down maintenance frequency comprises an inner tube and an outer tube, wherein a blocking plate is welded at the end part of the outer tube, one or more through holes connected with the outer wall of the inner tube are formed in the blocking plate, and the liquid end of the inner tube extends out of the blocking plate to form an inner tube extension section.

The tube heat exchanger capable of slowing down maintenance frequency is characterized in that the length of the extension section of the inner tube is 5-10cm.

The tubular heat exchanger capable of slowing down the maintenance frequency is characterized in that a guard plate is sleeved on the inner tube extension section, a through hole matched with the inner tube extension section in size is formed in the guard plate, and the guard plate is welded on the inner tube extension section.

Compared with the prior art, the length of the inner tube of the existing double-pipe heat exchanger or shell-and-tube heat exchanger is increased, so that the end part of the inner tube rises out of the blocking plate to form the inner tube extension section, when the blocking plate is connected with the U-shaped tube through the flange, the inner tube extension section is positioned in the U-shaped tube, liquid in the U-shaped tube impacts the blocking plate to reverse and then mutually impacts the liquid in the U-shaped tube to form turbulent flow, the impact on the inner tube is reduced, the inner tube is re-entered, the maintenance period of the inner tube at the blocking plate can be effectively prolonged, and the service life of the inner tube is prolonged.

Meanwhile, the guard board is sleeved on the extending section of the inner pipe, the impact of water flow on the bottom plate can be reduced by the arrangement of the guard board, if the joint of the second guard board and the inner pipe is broken by the impact of the inner pipe, the outer pipe of the tubular heat exchanger is not required to be cut off during maintenance, so that the maintenance efficiency can be improved during maintenance, and the maintenance difficulty is reduced.

Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objects and other advantages of the utility model may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the specification.

Drawings

FIG. 1 is a schematic view of a construction of a double pipe heat exchanger in use;

FIG. 2 is a schematic illustration of one of the structures of the present utility model;

fig. 3 is a schematic view of another construction of the present utility model.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1: as shown in fig. 1 and 2, the structure of the tubular heat exchanger comprises an inner tube 1 and an outer tube 2 sleeved outside the inner tube 1, a blocking plate 3 is welded at the end part of the outer tube 2, one or more through holes 4 connected with the outer wall of the inner tube 1 are formed in the blocking plate 3, and meanwhile, the joint of the inner tube 1 and the blocking plate 3 is subjected to full welding.

Example 2: as shown in figures 1 and 3, the tubular heat exchanger comprises an inner tube 1 and an outer tube 2 sleeved outside the inner tube 1, a blocking plate 3 is welded at the end part of the outer tube 2, one or more through holes 4 connected with the outer wall of the inner tube 1 are formed in the blocking plate 3, meanwhile, the joint of the inner tube 1 and the blocking plate 3 is subjected to full welding, the working principle and the connection of the conventional tubular heat exchanger are not adjusted, the improvement is that the liquid inlet end of the inner tube 1 extends out of the blocking plate 3 to form an inner tube extension section 5, the length of the inner tube extension section 5 is 5-10cm, meanwhile, a guard plate 6 is sleeved on the inner tube extension section 5, through holes 7 matched with the inner tube extension section 5 in size are formed in the guard plate 6, the backplate 6 welds on inner tube extension 5, thus when the closure plate 3 passes through flange 8 and is connected with U-shaped pipe 9, inner tube extension 5 is located U-shaped pipe 9, liquid in U-shaped pipe 9 can strike backplate 6 for the liquid that directly gets into inner tube 1 in the in-process of flowing can strike backplate 6 reverse back and the mutual striking of liquid forms turbulent flow in the U-shaped pipe 9, reduce the impact to closure plate 3 and inner tube 1, and then can effectively prolong the maintenance cycle of closure plate 3 and inner tube 1, increase closure plate 3 and inner tube 1 life, if the maintenance is left in the junction of closure plate 6 and inner tube 1 because of the stress point simultaneously, appear that the inner tube strikes the fracture, its maintenance also need not to cut open the outer tube 2 of tubular heat exchanger, also can improve maintenance efficiency when the maintenance like this, reduce the maintenance degree of difficulty.

The preferred embodiments of the utility model disclosed above are intended only to assist in the explanation of the utility model. The preferred embodiments are not exhaustive or to limit the utility model to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the utility model and the practical application, to thereby enable others skilled in the art to best understand and utilize the utility model.

Claims

1. The utility model provides a tubular heat exchanger that can slow down maintenance frequency, it includes inner tube (1) and outer tube (2), has closure plate (3) at the tip welding of outer tube (2), has seted up on closure plate (3) with inner tube (1) outer wall connection's one or more through-hole (4), its characterized in that: the liquid inlet end of the inner tube (1) extends out of the blocking plate (3) to form an inner tube extension section (5).

2. The tube heat exchanger capable of slowing down maintenance frequency according to claim 1, wherein: the length of the inner pipe extension section (5) is 5-10cm.

3. The tube heat exchanger capable of slowing down maintenance frequency according to claim 1, wherein: the inner pipe extension section (5) is sleeved with the guard plate (6), the guard plate (6) is provided with a through hole (7) matched with the inner pipe extension section (5) in size, and the guard plate (6) is welded on the inner pipe extension section (5).