Sealing sleeve for heat exchange tube

Abstract

The utility model relates to the technical field of sealing sleeves, in particular to a sealing sleeve for a heat exchange tube, which overcomes the defects of the sealing sleeve in the prior art and comprises a tube plate, the heat exchange tube is arranged on the inner side of the tube plate in a penetrating mode, a sleeve shell is arranged on the surface of the heat exchange tube, and a sealing assembly is arranged in the sleeve shell. The sealing device has the characteristics of high practicability and good sealing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing sleeves, in particular to a sealing sleeve for a heat exchange tube. Background Art

[0002] Heat exchange tubes are used for heat exchange between two media. They have high thermal conductivity and good isothermal properties. They are devices that can quickly transfer heat from one point to another. During operation, a sealing sleeve needs to be put on the surface to ensure better heat transfer and reduce losses. The existing sealing sleeve is only a single-layer shell, which is put on the surface of the heat exchange tube. The sealing effect and heat insulation effect are average and need to be improved.

[0003] In the existing patent publication number CN214250724U, a sealing sleeve for a flue gas cooler heat exchange tube is disclosed, including an elbow, a sealing box, a tube sheet, a fin and a heat exchange tube. The sealing sleeve is made of polytetrafluoroethylene and includes a coaxially connected boss and a sleeve. The elbow is arranged in the sealing box, a tube sheet is installed on one side surface of the sealing box, a plurality of tube holes are opened on the tube sheet, a sleeve is passed through each tube hole, the boss is placed outside the sealing box, the sleeve is glued to the tube hole, the heat exchange tube is passed through the boss in turn, the sleeve is connected to the elbow in the sealing box, and the fin is welded to the heat exchange tube near one end of the tube sheet. This sealing sleeve uses a single sealing box and a single sealing sleeve to be sleeved on the heat exchange tube, the effect is general, and the practicality needs to be improved.

[0004] Therefore, it is necessary to design a sealing sleeve for heat exchange tubes with strong practicality and good sealing effect. Utility Model Content

[0005] The utility model aims to provide a sealing sleeve for a heat exchange tube to solve the problems raised in the above background technology.

[0006] To achieve the above purpose, the utility model provides the following technical solutions: a sealing sleeve for heat exchange tubes, comprising a tube sheet, a heat exchange tube is arranged through the inner side of the tube sheet, a sleeve is arranged on the surface of the heat exchange tube, and a sealing assembly is arranged inside the sleeve.

[0007] According to the above technical solution, the sealing assembly includes a retaining ring, which is fixedly connected to the inner wall of the casing, a pair of sealing rings 1 are fixedly connected to the inner wall of the casing, and the sealing ring 1 is located at the lower side of the retaining ring, and a pair of sealing rings 2 are also fixedly connected to the inner wall of the casing, and the sealing ring 2 is located in the middle of the pair of sealing rings 1.

[0008] According to the above technical solution, a pair of O-rings 1 are provided on the inner wall of the casing, and the O-rings 1 are located between a pair of sealing rings 2.

[0009] According to the above technical solution, one side of the casing is fixedly connected with a second O-ring, and one side of the second O-ring is in contact with the surface of the tube sheet.

[0010] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0011] (1) By providing a sealing component, a device can quickly transfer heat energy from one point to another with almost no heat loss, thus ensuring the accuracy of the sealing cavity size, smoothness and long-term stable sealing performance.

[0012] (2) Through the design of the position arrangement of the sealing ring, the two-layer sealing sleeve ensures the accuracy of the sealing cavity size, smoothness and long-term stable sealing performance. It is set in the middle of the second sealing ring to increase the sealing performance. The O-ring sealing structure is simple. Different sealing materials are selected according to different working conditions to ensure temperature resistance and corrosion resistance. It is easy to install and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0014] Figure 2 It is a cross-sectional view of the utility model;

[0015] In the figure: 1. tube sheet; 2. casing; 3. heat exchange tube; 4. retaining ring; 5. sealing ring 1; 6. sealing ring 2; 7. O-ring 1; 8. O-ring 2. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] See also Figure 1-2 The utility model provides a technical solution: a sealing sleeve for a heat exchange tube, comprising a tube sheet 1, a heat exchange tube 3 is arranged through the inner side of the tube sheet 1, a sleeve shell 2 is arranged on the surface of the heat exchange tube 3, and a sealing component is arranged inside the sleeve shell 2.

[0018] Specifically, the heat exchange tube 3 and the sealing sleeve are placed inside the cylinder to exchange heat between the two media. It has high thermal conductivity and good isothermal properties, and can quickly transfer heat energy from one point to another with almost no heat loss. The sealing component ensures the accuracy of the sealing cavity size, smoothness and long-term stable sealing performance.

[0019] The sealing assembly includes a retaining ring 4, which is fixedly connected to the inner wall of the casing 2. A pair of sealing rings 5 ​​are fixedly connected to the inner wall of the casing 2, and the sealing ring 5 is located at the lower side of the retaining ring 4. A pair of sealing rings 6 are also fixedly connected to the inner wall of the casing 2, and the sealing ring 6 is located in the middle of the pair of sealing rings 5.

[0020] Specifically, the two-layer sealing sleeve ensures the accuracy of the sealing cavity size, smoothness and long-term stable sealing performance.

[0021] A pair of O-rings 7 are disposed on the inner wall of the casing 2 , and the O-rings 7 are located between the pair of sealing rings 6 .

[0022] Specifically, it is arranged in the middle of the sealing ring 2 6 to increase the sealing performance. The O-ring sealing structure is simple. Different sealing materials are selected according to different working conditions to ensure temperature resistance and corrosion resistance, and it is easy to install and maintain.

[0023] An O-ring 2 8 is fixedly connected to one side of the casing 2 , and one side of the O-ring 2 8 is in contact with the surface of the tube sheet 1 .

[0024] Specifically, the O-ring 8 is used to connect the gap between the sealing sleeve and the tube sheet 1 to ensure that heat is not dissipated and wasted.

[0025] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sealing sleeve for a heat exchange tube, comprising a tube sheet (1), characterized in that: A heat exchange tube (3) is provided through the inner side of the tube sheet (1), a casing (2) is provided on the surface of the heat exchange tube (3), a sealing assembly is provided inside the casing (2), and the sealing assembly comprises a retaining ring (4), the retaining ring (4) is fixedly connected to the inner wall of the casing (2), a pair of sealing rings (5) are fixedly connected to the inner wall of the casing (2), the sealing rings (5) are located at the lower side of the retaining ring (4), and a pair of sealing rings (6) are also fixedly connected to the inner wall of the casing (2), and the sealing rings (6) are located in the middle of the pair of sealing rings (5).

2. A sealing sleeve for a heat exchange tube according to claim 1, characterized in that: A pair of O-rings (7) are provided on the inner wall of the casing (2), and the O-rings (7) are located between a pair of sealing rings (6).

3. The sealing sleeve for heat exchange tube according to claim 1, characterized in that: One side of the casing (2) is fixedly connected to an O-ring 2 (8), and one side of the O-ring 2 (8) is in contact with the surface of the tube sheet (1).

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