Flue butt joint expansion joint
By designing length and angle adjustment components for the flue connection expansion joint, the error problem in flue connection installation was solved, and efficient connection was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-04-14
AI Technical Summary
During the installation of flue connections, errors can lead to installation difficulties and prevent effective connection, requiring continuous adjustments.
A flue connection expansion joint was designed, comprising a length adjustment section and an angle adjustment section. The flue length and angle are adjusted by means of a connector made of aluminum alloy to achieve connection by utilizing the deformation characteristics.
It effectively reduces errors during flue installation, simplifies the connection process, and improves installation efficiency.
Smart Images

Figure CN224120866U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of flue installation, and in particular to a flue connection expansion joint. Background Technology
[0002] Currently, when installing two flues together, errors can easily occur during the connection process. For example, if the installation length between the two flues is insufficient, or if the installation angle of the two flues deviates during installation, it will be impossible to connect the two flues during the installation process. This requires constant adjustments to the two flues, which is quite inconvenient.
[0003] Therefore, it is necessary to invent a flue connection expansion joint to solve the above problems. Summary of the Invention
[0004] The purpose of this invention is to provide a flue gas connection expansion joint to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a flue connection expansion joint, comprising an expansion joint body, the expansion joint body further comprising multiple connectors, the expansion joint body being formed by welding the ends of the multiple connectors together, the connectors further comprising a length adjustment part, the bottom of the length adjustment part being provided with two first connecting parts, the bottom of each of the two first connecting parts being provided with a second connecting part, and the sidewall of the second connecting part being connected with an angle adjustment part.
[0006] Preferably, the length adjustment part, the first connecting part, the second connecting part, and the angle adjustment part are integrally formed, and the first connecting part and the second connecting part, the second connecting part, and the angle adjustment part are all formed by bending with a bending machine.
[0007] Preferably, the surface of the angle adjustment part is provided with a mounting hole for connection with the flue.
[0008] Preferably, the connector is made of aluminum alloy.
[0009] The technical effects and advantages of this utility model are as follows:
[0010] By installing two flues onto the surfaces of two angle adjustment parts, if the length between the two flues is insufficient, the length adjustment part is pulled to deform, thereby reducing the installation distance between the two flues. If the installation angles of the two flues are different, the angle adjustment part is pulled to deform, thus connecting two flues with different angles, effectively reducing installation errors. Attached Figure Description
[0011] Figure 1This is a schematic diagram of the overall structure of this utility model;
[0012] Figure 2 This is a side view of the connector of this utility model.
[0013] In the figure: 1. Expansion joint body; 2. Connector; 3. Length adjustment part; 4. First connecting part; 5. Second connecting part; 6. Angle adjustment part; 7. Mounting hole. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0015] This utility model provides, for example Figure 1-2 The diagram illustrates a flue gas connection expansion joint, comprising an expansion joint body 1 and multiple connectors 2. The expansion joint body 1 is formed by welding the connectors 2 end to end, and the connectors 2 together constitute a flue gas passage. Each connector 2 also includes a length adjustment part 3. The bottom of the length adjustment part 3 is provided with two first connecting parts 4, and the bottom of each of the two first connecting parts 4 is provided with a second connecting part 5. An angle adjustment part 6 is connected to the side wall of the second connecting part 5. By installing two flues onto the surfaces of the two angle adjustment parts 6, if the length between the two flues is insufficient, the length adjustment part 3 is pulled to deform, thereby reducing the installation distance between the two flues. If the installation angles of the two flues are different, the angle adjustment part 6 is pulled to deform, thereby connecting two flues with different angles, effectively reducing errors during flue installation.
[0016] The length adjustment part 3, the first connecting part 4, the second connecting part 5 and the angle adjustment part 6 are integrally formed. The first connecting part 4 and the second connecting part 5, the second connecting part 5 and the angle adjustment part 6 are all formed by bending with a bending machine.
[0017] The surface of the angle adjustment part 6 is provided with mounting holes 7 for connecting to the flue. The mounting holes 7 can be opened according to the size of the flue. If there is an error in the installation size of the two flues, mounting holes 7 at different positions can be opened on the surface of the two angle adjustment parts 6, so as to facilitate the connection of flues with different installation sizes.
[0018] The connector 2 is made of aluminum alloy, which has a certain deformation capacity, allowing the length adjustment part 3 and the angle adjustment part 6 to deform when connecting the flues, thus facilitating the connection of the two flues.
[0019] Working principle of this utility model:
[0020] Depending on the size of the two flues, mounting holes 7 are made at different positions on the surfaces of the two angle adjustment parts 6, so as to facilitate the connection of flues with different installation sizes. If the length between the two flues is insufficient, the length adjustment part 3 is pulled to deform the length adjustment part 3, thereby reducing the installation distance between the two flues. If the installation angles of the two flues are different, the angle adjustment part 6 is pulled to deform the angle adjustment part 6, thereby connecting the two flues with different angles.
[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A flue gas duct connection expansion joint, comprising an expansion joint body, characterized in that: The expansion joint body also includes multiple connectors. The expansion joint body is formed by welding multiple connectors end to end. Each connector also includes a length adjustment part. The bottom of the length adjustment part is provided with two first connecting parts, and the bottom of each of the two first connecting parts is provided with a second connecting part. The side wall of the second connecting part is connected to an angle adjustment part.
2. The flue gas duct expansion joint according to claim 1, characterized in that: The length adjustment part, the first connecting part, the second connecting part, and the angle adjustment part are integrally formed, and the first connecting part and the second connecting part, the second connecting part, and the angle adjustment part are all formed by bending with a bending machine.
3. The flue gas duct expansion joint according to claim 1, characterized in that: The surface of the angle adjustment part is provided with mounting holes for connection with the flue.
4. The flue gas duct expansion joint according to claim 1, characterized in that: The connector is made of aluminum alloy.