A floating connection structure for a double-layer chimney detection tube

Abstract

This application relates to a floating connection structure for a double-layer chimney inspection tube, belonging to the field of chimney technology. It includes an outer cylinder, an inner cylinder, and an inspection tube connecting to the inner cylinder. A floating connection structure is provided at the side hole of the outer cylinder through which the inspection tube passes. This structure consists of an outer frame welded to the outer cylinder, a cover plate with a central hole, and an elastic sealing cover. One end of the sealing cover is locked to the outer wall of the inspection tube by a hose clamp, and the other end is pressed onto the cover plate by a split-type pressure ring. Its innovation lies in: compensating for the thermal displacement of the inner and outer cylinders through the flexible deformation of the elastic sealing cover, achieving dynamic sealing. This solves the stress cracking and leakage risks of traditional rigid connections, significantly improving the operational safety and maintenance convenience of the chimney.

Description

Technical Field

[0001] This application belongs to the field of double-layer chimney technology, and in particular relates to a floating connection structure for a double-layer chimney detection tube. Background Technology

[0002] Traditional double-layer chimneys (sleeve chimneys) often use rigid connections for their detection pipes. When the outer and inner cylinders experience axial or radial displacement due to temperature differences, stress concentration or seal failure can easily occur at the connection point of the detection pipe. Existing sealing structures lack displacement compensation capabilities, especially for chimneys with large temperature differences and severe thermal deformation. Long-term operation can easily lead to leaks, and maintenance requires complete disassembly, which is inefficient. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a floating connection structure for a double-layer chimney detection tube in order to overcome the shortcomings of the prior art.

[0004] The technical solution adopted by this utility model to solve its technical problem is:

[0005] A floating connection structure for a double-layer chimney detection tube includes an outer cylinder and an inner cylinder. A detection tube perpendicular or inclined to the axis of the inner cylinder is provided between the outer cylinder and the inner cylinder. The detection tube is connected to and fixedly connected to the inner cylinder.

[0006] The detection tube passes through the side hole of the outer cylinder, and a floating connection structure is provided between it and the outer cylinder. The floating connection structure includes an outer frame fixedly connected to the outer wall of the side hole of the outer cylinder, and an elastic sealing cover is provided between the outer frame and the detection tube. The elastic sealing cover is used to form a floating seal between the outer wall of the detection tube and the side hole of the outer cylinder.

[0007] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, the outer port of the outer frame is provided with a cover plate with a central opening.

[0008] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, an ear plate is fixedly connected to the inner wall of the outer frame, and the ear plate is used to limit the connection of the cover plate.

[0009] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, a pressure ring is bolted to the outside of the center hole of the cover plate, and the pressure ring is used to press one end of the elastic sealing cover tightly against the cover plate.

[0010] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, the pressure ring is set as two symmetrical semi-circular arc plates.

[0011] Preferably, the floating connection structure of the double-layer chimney detection tube of this utility model further includes a hose clamp, which is used to lock the elastic sealing cover to the outer wall of the detection tube.

[0012] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, the outer panel of the cover plate is also provided with a handle.

[0013] Preferably, in the floating connection structure of the double-layer chimney detection tube of this utility model, the outer port of the detection tube is also provided with a connecting flange.

[0014] The beneficial effects of this utility model are:

[0015] (1) By using the shear deformation of the elastic sealing cover, the axial / radial relative displacement between the inner and outer cylinders caused by the temperature difference is compensated, thus completely solving the stress concentration problem caused by traditional rigid connection.

[0016] (2) Both ends of the elastic sealing cover are locked to the detection tube by hose clamps and fixed to the cover plate by pressure rings, forming a double sealing barrier to ensure zero leakage of high temperature flue gas and prevent external rainwater and dust from entering the chimney.

[0017] (3) The removable cover and split pressure ring design, along with the handle, allow for quick inspection of sealing components without the need for complete disassembly, improving maintenance efficiency by more than 60%. Attached Figure Description

[0018] The technical solution of this application will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of this application (the elastic sealing cover and hose clamp are not shown);

[0020] Figure 2 yes Figure 2 A cross-sectional structural diagram (the elastic sealing cover and hose clamp are not shown);

[0021] Figure 3 This is a schematic diagram showing the positional relationship of the various structures in an embodiment of this application;

[0022] The attached figures are labeled as follows:

[0023] Outer cylinder 10, inner cylinder 20, detection tube 30, floating connection structure 40;

[0024] 41. Outer frame, 42. Cover plate, 43. Ear plate, 44. Pressure ring, 45. Hose clamp, 46. Handle, 47. Elastic sealing cover. Detailed Implementation

[0025] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0026] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0027] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] The technical solution of this application will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] Example

[0030] This embodiment provides a floating connection structure for a double-layer chimney detection tube, referring to... Figure 1-3 The structure includes an outer cylinder 10 and an inner cylinder 20 arranged coaxially. A detection tube 30 is provided between the outer cylinder 10 and the inner cylinder 20, which is perpendicular or inclined to the axis of the inner cylinder 20. In this embodiment, the detection tube 30 is arranged radially along the inner cylinder. The end of the detection tube 30 penetrates the side wall of the inner cylinder 20 to achieve communication, and the joint is sealed by welding to prevent smoke leakage.

[0031] Preferably, in the floating connection structure of the double-layer chimney detection tube in this embodiment, the side wall of the outer cylinder 10 is provided with a side hole, and the hole diameter is larger than the outer diameter of the detection tube 30. The other end of the detection tube 30 passes through the side hole of the outer cylinder 10, and a floating connection structure 40 is provided between it and the outer cylinder 10 to realize a floating and sealed connection between the detection tube 30 and the outer cylinder 10.

[0032] Specifically, the floating connection structure 40 includes an outer frame 41 fixedly connected to the outer wall of the side hole of the outer cylinder 10, with the connection point sealed by welding. Ear plates 43 are fixedly installed at the four corners of the inner wall of the outer frame 41, serving to limit the position of the cover plate 42. The cover plate 42 is connected to the ear plates 43 by screws. A sealing strip is provided at the connection point between the cover plate 42 and the inner wall of the outer frame 41 to achieve a sealed connection.

[0033] Preferably, in the floating connection structure of the double-layer chimney detection tube in this embodiment, the detection tube 30 passes through the central opening of the cover plate 42. A pressure ring 44 is bolted to the outside of the central opening of the cover plate 42. The pressure ring 44 is configured as two symmetrical semi-circular arc plates. The semi-circular arc plates are detachably locked and fixed to the cover plate 42 by screws.

[0034] Preferably, the floating connection structure of the double-layer chimney detection tube in this embodiment is further provided with an elastic sealing cover 47. In this embodiment, the elastic sealing cover 47 is made of a high-temperature resistant elastic plastic ring, such as a high-temperature resistant silicone ring. One end of the elastic plastic ring is locked to the outer wall of the detection tube 30 by a hose clamp 45, and the other end is pressed against the cover plate 42 by a pressure ring. The elastic sealing cover 47 is provided to form a floating seal between the outer wall of the detection tube 30 and the side hole of the outer cylinder 10.

[0035] Preferably, in the floating connection structure of the double-layer chimney detection tube in this embodiment, the outer panel of the cover plate 42 is also provided with a handle 46 to facilitate the disassembly and assembly of the cover plate 42 during maintenance.

[0036] Preferably, in the floating connection structure of the double-layer chimney detection tube in this embodiment, the outer port of the detection tube 30 is also provided with a connecting flange to facilitate the external pipe material.

[0037] The working principle of this application is as follows: when the chimney heats up, the inner cylinder 20 expands upward or axially, causing the detection tube 30 to move axially. The elastic sealing cover 47 undergoes shear deformation to compensate for the displacement while maintaining a seal.

[0038] Based on the above-described preferred embodiments according to this application, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this application. The technical scope of this application is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A floating connection structure of a double-layer chimney inspection tube including an outer cylinder (10) and an inner cylinder (20), characterized in that: A detection tube (30) perpendicular or inclined to the axis of the inner cylinder (20) is provided between the outer cylinder (10) and the inner cylinder (20). The detection tube (30) is connected to and fixedly connected to the inner cylinder (20). The detection tube (30) passes through the side hole of the outer cylinder (10), and a floating connection structure (40) is provided between it and the outer cylinder (10). The floating connection structure (40) includes an outer frame (41) fixedly connected to the outer wall of the side hole of the outer cylinder (10). An elastic sealing cover (47) is provided between the outer frame (41) and the detection tube (30). The elastic sealing cover (47) is used to form a floating seal between the outer wall of the detection tube (30) and the side hole of the outer cylinder (10).

2. The floating connection structure of a double-layer chimney detection tube according to claim 1, characterized in that: The outer frame (41) has a cover plate (42) with a central opening at its outer port.

3. The floating connection structure of a double-layer chimney detection tube according to claim 2, characterized in that: The inner wall of the outer frame (41) is fixedly connected with an ear plate (43), which is used to limit the connection of the cover plate (42).

4. The floating connection structure of a double-layer chimney detection tube according to claim 3, characterized in that: A pressure ring (44) is bolted to the outside of the center hole of the cover plate (42). The pressure ring (44) is used to press one end of the elastic sealing cover (47) against the cover plate (42).

5. The floating connection structure of a double-layer chimney detection tube according to claim 4, characterized in that: The pressure ring (44) is configured as two symmetrical semi-circular arc plates.

6. The floating connection structure of a double-layer chimney detection tube according to claim 5, characterized in that: The floating connection structure (40) also includes a hose clamp (45) for locking the elastic sealing cover (47) to the outer wall of the detection tube (30).

7. The floating connection structure of a double-layer chimney detection tube according to claim 4, characterized in that: The outer panel of the cover plate (42) is also provided with a handle.

8. The floating connection structure of a double-layer chimney detection tube according to claim 1, characterized in that: The outer port of the detection tube (30) is also provided with a connecting flange.

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