Double-seal metal expansion seal assembly

Abstract

The utility model relates to the technical field of sealing assemblies, in particular to a double-sealing metal expansion sealing assembly which comprises an inner guide cylinder protective cover, a limiting ring is sleeved on the outer side of the top end of the inner guide cylinder protective cover, outer frames are fixed at the upper end and the lower end of the outer side of the inner guide cylinder protective cover, and annular plates are fixed at the bottom ends of the outer frames. The inner sides of the annular plates are fixedly connected with the corrugated pipe and the non-metal compensator assembly through connecting bolts and nuts, the non-metal compensator assembly is arranged on the inner side of the corrugated pipe, and the non-metal compensator assembly and the corrugated pipe structure are arranged on the outer side between the two annular plates, namely the outer side of the inner guide cylinder protective cover. When the device is installed at the joint of a high-heat medium pipeline, the device and the pipeline can be deformed through the structural characteristics on the premise that the two ends of the device are firmly fixed, and the sealing performance of the joint can be kept to a certain extent; and the effects of heat preservation and buffering at the joint are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing components, in particular to a double-sealing metal expansion sealing component. Background Art

[0002] Existing expansion joints with rated expansion and contraction elastic displacement of high-temperature exhaust flue gas channels and absorption channels are made of a composite of thermal insulation material and high-temperature resistant rubber, which are known as non-metallic expansion joints. This type of expansion joint will agglomerate after the thermal insulation material contacts water, and the flue gas channel needs to be cleaned regularly with water.

[0003] Therefore, the expansion joint is prone to failure due to the water used to clean the flue gas channel seeping into the expansion joint and causing the insulation material to agglomerate. Utility Model Content

[0004] Technical issues solved

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a double-seal metal expansion seal assembly, which can effectively solve the problem in the prior art that the expansion joint is easily ineffective due to water used to clean the flue gas channel seeping into the expansion joint, causing the insulation material to agglomerate.

[0006] Technical Solution

[0007] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] The utility model provides a double-seal metal expansion seal component, comprising an inner guide tube protective cover, a limit ring is sleeved on the outer side of the top end of the inner guide tube protective cover, outer frames are fixed to the upper and lower ends of the outer side of the inner guide tube protective cover, and a ring plate is fixed to the bottom end of the outer frame. The inner side of the ring plate is connected and fixed to a bellows and a non-metallic compensator component by connecting bolts and nuts, and the non-metallic compensator component is arranged on the inner side of the bellows.

[0009] Furthermore, blind flanges are fixed to the outer sides of the outer frame at the upper and lower ends, and the limiting ring is clamped and fixed on the inner side wall of the outer frame.

[0010] Furthermore, an anti-slip gasket is sleeved between the connecting bolt and the non-metallic compensator assembly, and the inner side of the ring plate is an L-shaped structure.

[0011] Furthermore, the non-metallic compensator component is a fluororubber assembly.

[0012] Furthermore, the limiting ring is an annular structure with a groove opened inwardly on the inner side, and the limiting ring is made of thermal insulation cotton.

[0013] Furthermore, the length of the non-metallic compensator assembly is greater than the distance between the upper and lower sets of ring plates.

[0014] Beneficial Effects

[0015] Compared with the known public technology, the technical solution provided by the utility model has the following beneficial effects:

[0016] 1. The utility model provides an outer frame and a ring plate structure, so that the user can connect and fix the internal structure with the ring plate, fix the limiting ring at the top of the outer frame, and connect and fix the bottom end with the inner guide tube protective cover to protect the internal inner guide tube protective cover structure.

[0017] 2. In this device, a non-metallic compensator assembly and a bellows structure are arranged on the outside between the two sets of ring plates, that is, on the outside of the inner guide tube protective cover. Therefore, when this device is installed at the pipeline connection of the high-temperature medium, the two can be deformed through their structural characteristics (bending state and material) on the premise that both ends are firmly fixed, which can maintain the sealing of the transition to a certain extent. The top end of the inner guide tube protective cover is placed in the limit ring, and the material of its thermal insulation cotton plays a role in heat preservation and buffering of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is the structural front view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the structure in the utility model;

[0022] Figure 4 for Figure 3 The main view of the structure in.

[0023] The numbers in the figure represent: 1. blind flange; 2. limit ring; 3. outer frame; 4. ring plate; 5. bellows; 6. non-metallic compensator assembly; 7. inner guide tube protective cover; 8. connecting bolts. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of 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.

[0025] The utility model is further described below in conjunction with embodiments.

[0026] Example: Double seal metal expansion seal assembly, see attached Figure 1 -Attached Figure 4 , including an inner guide tube protective cover 7, a limit ring 2 is sleeved on the outer side of the top end of the inner guide tube protective cover 7, outer frames 3 are fixed to the upper and lower ends of the outer side of the inner guide tube protective cover 7, and a ring plate 4 is fixed to the bottom end of the outer frame 3. The inner side of the ring plate 4 is connected and fixed to the bellows 5 and the non-metallic compensator component 6 by connecting bolts 8 and nuts. The non-metallic compensator component 6 is arranged on the inner side of the bellows 5; through the outer frame 3 and the ring plate 4 structure, the user can connect and fix the internal structure to the ring plate 4, fix the limit ring 2 through the top end of the outer frame 3, and connect and fix the bottom end to the inner guide tube protective cover, so as to protect the internal inner guide tube protective cover 7 structure.

[0027] Blind flanges 1 are fixed to the outer sides of the upper and lower ends of the outer frame 3; the limit ring 2 is fixed on the inner wall of the outer frame 3; an anti-slip gasket is sleeved between the connecting bolt 8 and the non-metallic compensator assembly 6, and the inner side of the ring plate 4 is an L-shaped structure; the non-metallic compensator assembly 6 is a fluororubber assembly; the limit ring 2 is an annular structure with a groove opened inward on the inner side, and the limit ring 2 is made of thermal insulation cotton; the length of the non-metallic compensator assembly 6 is greater than the spacing between the upper and lower two groups of ring plates 4; by arranging the non-metallic compensator assembly 6 and the bellows 5 structure on the outer side between the two groups of ring plates 4, that is, on the outer side of the inner guide tube protective cover 7, when the device is installed at the pipeline connection of the high-heat medium, the two can be deformed by their structural characteristics (bending state and material) under the premise of being firmly fixed at both ends, which can play a role in maintaining the sealing of the transition to a certain extent, and the top end of the inner guide tube protective cover 7 is placed in the limit ring 2, and the material of its thermal insulation cotton plays a role in heat preservation and buffering of the connection.

[0028] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. Double seal metal expansion seal assembly, characterized in that: The invention comprises an inner guide tube protective cover (7), wherein a limit ring (2) is sleeved on the outer side of the top end of the inner guide tube protective cover (7), an outer frame (3) is fixed to the upper and lower ends of the outer side of the inner guide tube protective cover (7), a ring plate (4) is fixed to the bottom end of the outer frame (3), the inner side of the ring plate (4) is connected and fixed to a bellows (5) and a non-metallic compensator assembly (6) by connecting bolts (8) and nuts, and the non-metallic compensator assembly (6) is arranged on the inner side of the bellows (5).

2. The double seal metal expansion seal assembly according to claim 1, characterized in that: Blind flanges (1) are fixed to the outer sides of the outer frame (3) at both upper and lower ends, and the limiting ring (2) is clamped and fixed on the inner side wall of the outer frame (3).

3. The double seal metal expansion seal assembly according to claim 1, characterized in that: An anti-slip gasket is sleeved between the connecting bolt (8) and the non-metallic compensator assembly (6), and the inner side of the ring plate (4) is an L-shaped structure.

4. The double seal metal expansion seal assembly according to claim 1, characterized in that: The non-metal compensator component (6) is a fluororubber assembly.

5. The double seal metal expansion seal assembly according to claim 4, characterized in that: The limiting ring (2) is an annular structure with a groove formed inwardly on the inner side, and the limiting ring (2) is made of thermal insulation cotton.

6. The double seal metal expansion seal assembly according to claim 1, characterized in that: The length of the non-metallic compensator assembly (6) is greater than the distance between the upper and lower sets of ring plates (4).

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