Composite correction roller expansion joint

Abstract

The utility model relates to a composite deviation rectifying roller expansion joint which is provided with a connecting flange and a drum-shaped skin, wherein the two ends of the drum-shaped skin are fixedly arranged on the connecting flange; the drum-shaped skin comprises an inner-layer steel wire mesh, a middle layer and glass fabric which are sequentially adhered to one another from inside to outside, a supporting ring is fixedly arranged in the drum-shaped skin, and the ring wall of the supporting ring is fixedly connected with the inner wall of the drum-shaped skin; the supporting ring comprises a ring defined by elastic metal wires and a teflon outer lining wrapping the ring, and is further provided with a plurality of connecting steel wires which can be wound with the inner-layer steel wire mesh and can drive the supporting ring and the inner-layer steel wire mesh to be fixed after being wound. The supporting ring is fixedly connected with the inner wall of the drum-shaped skin through winding and fixing of the connecting steel wire and the inner-layer steel wire net. The structural strength of the expansion joint can be remarkably improved, and instability of the expansion joint is avoided.

Description

Technical Field

[0001] This utility model relates to a composite correction roller expansion joint. Background Technology

[0002] The furnace roller alignment fabric expansion joint is a key component used in annealing furnaces in the steel industry. Its main function is to ensure the stability of the furnace roller system and the entire unit. This expansion joint adopts a non-metallic alignment roller design to accommodate the radial and axial compensation required by the alignment roller during use.

[0003] Existing corrective expansion joints achieve compensation through non-metallic drum-shaped skins, but these joints have drawbacks: low structural strength, and they are prone to instability and ineffective operation when the pipeline pressure is high.

[0004] Although existing technologies include adding supports inside the drum-shaped skin to ensure stability, there is room for movement between the added supports and the inner wall of the drum-shaped skin. When the deformation of the drum-shaped skin is large, the added supports may detach from the inner wall of the drum-shaped skin, causing the expansion joint to return to a state prone to instability. Summary of the Invention

[0005] The purpose of this invention is to provide a composite correction roller expansion joint that can significantly improve the structural strength of the expansion joint and prevent it from becoming unstable.

[0006] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a connecting flange and a drum-shaped skin fixedly installed on the connecting flange at both ends; the drum-shaped skin includes an inner layer of steel wire mesh, an intermediate layer and a fiberglass cloth that are sequentially adhered to each other from the inside to the outside, and a support ring is fixedly installed inside the drum-shaped skin, and the ring wall of the support ring is fixedly connected to the inner wall of the drum-shaped skin.

[0007] Furthermore, the support ring includes a ring formed by elastic metal wires and a PTFE liner covering the ring. It also has multiple connecting steel wires that can be wound around the inner steel wire mesh and can drive the support ring to be fixed to the inner steel wire mesh after winding. The support ring is fixed to the inner wall of the drum-shaped skin by the winding of the connecting steel wires and the inner steel wire mesh.

[0008] Furthermore, a steel sheet is fixedly provided on the inner ring of the support ring, extending along the circumference of the support ring. The steel sheet has teeth grooves that are evenly arranged along the extension direction of the steel sheet and can be inserted into the connecting steel wire to form a limiting position. The connecting steel wire is installed and positioned on the support ring by cooperating with the limiting position of the teeth grooves.

[0009] Furthermore, the intermediate layer includes fire-retardant silicone rubber I, ceramic cloth I, fire-retardant silicone rubber II, ceramic cloth II, and fire-retardant silicone rubber III. The inner side of fire-retardant silicone rubber I is pressed onto the inner steel wire mesh and the connecting steel wires that are wound and fixed with the inner steel wire mesh by high temperature heating. The outer side of fire-retardant silicone rubber I and the inner side of fire-retardant silicone rubber II are fused into ceramic cloth I by high temperature. The outer side of fire-retardant silicone rubber II and the inner side of fire-retardant silicone rubber III are fused into ceramic cloth II by high temperature. The outer side of fire-retardant silicone rubber III is pressed onto fiberglass cloth by high temperature.

[0010] Furthermore, the intermediate layer includes a high-silica ceramic fiber cloth layer one on the outer side of the inner steel wire mesh and a high-silica ceramic fiber cloth layer two on the inner side of the fiberglass cloth; an aerogel insulation layer is provided between the high-silica ceramic fiber cloth layer one and the high-silica ceramic fiber cloth layer two.

[0011] Furthermore, an outer layer of steel wire mesh is provided on the inner or outer side of the aerogel insulation layer.

[0012] The present invention has the following positive effects: (1) The present invention has a support ring fixedly installed inside the drum-shaped skin. The ring wall of the support ring is fixedly connected to the inner wall of the drum-shaped skin. The support ring is fixedly connected to the inner wire mesh through the connecting steel wire. The support ring can prevent the drum-shaped skin from collapsing during use, thereby strengthening the stability of the structure and avoiding instability. At the same time, due to the fixed connection between the support ring and the drum-shaped skin, it can ensure that the support ring will not fall off due to separation and compression from the inner wall of the drum-shaped skin when the drum-shaped skin is compensating, thereby strengthening the stability of the expansion joint during use.

[0013] (2) The support ring of this utility model is covered with a PTFE liner. The PTFE liner adds a protective layer between the elastic reinforcing ring and the inner wall of the drum-shaped skin crest, which significantly extends the service life of the expansion joint.

[0014] (3) The inner ring of the support ring of this utility model is fixedly provided with steel plates extending along the circumference of the support ring. The steel plates are provided with toothed grooves that are evenly arranged in the extension direction of the steel plates and can be inserted into the grooves to form a limiting position. The connecting wires are installed and positioned on the support ring by engaging with the toothed grooves. By engaging with the toothed grooves, the connecting wires will not slide on the ring wall of the support ring when the support ring and the inner wall of the drum-shaped skin are fixedly connected, which would cause the fixed connection between the support ring and the drum-shaped skin to be unstable. At the same time, the engaging and limiting position of the connecting wires with the toothed grooves makes it easier to position the connecting wires during installation, which is convenient for installation.

[0015] (4) The drum-shaped skin of this utility model is composed of fireproof silicone, ceramic cloth and other composite materials. Fireproof silicone is non-toxic and odorless, has good thermal stability, stable chemical properties, can withstand high operating pressure and has high mechanical strength; ceramic cloth is resistant to high temperature, thermal shock, high temperature insulation, non-toxic and harmless; therefore, this utility model can significantly improve the performance of heat insulation, fire prevention, shock resistance and corrosion resistance.

[0016] (5) The inner wall of the drum-shaped skin of this utility model is an inner layer of steel wire mesh, and the middle layer is pressed onto the inner layer of steel wire mesh by high temperature heating through the inner side of fireproof silicone, so that the inner layer of steel wire mesh and the middle layer are better integrated, and the connection between the support ring and the drum-shaped skin is more stable after the support ring is fixedly connected to the inner layer of steel wire mesh by connecting steel wire. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein...

[0018] Figure 1 This is a cross-sectional view of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the support ring structure of this utility model;

[0020] Figure 3 Figure 1 A schematic diagram of the structure of Embodiment 1 in Part A;

[0021] Figure 4 for Figure 1 Enlarged view of part B in the middle;

[0022] Figure 5 for Figure 1 The structural diagram of Example 2 in Part A.

[0023] In this diagram, the components are: connecting flange: 1, drum-shaped skin: 2, inner wire mesh: 21, intermediate layer: 22, fireproof silicone rubber I: 221, ceramic cloth I: 222, fireproof silicone rubber II: 223, ceramic cloth II: 224, fireproof silicone rubber III: 225, fiberglass cloth: 23, support ring: 3, ring: 31, PTFE lining: 32, steel sheet: 33, toothed groove: 331, connecting steel wire: 4, high silica ceramic fiber cloth layer I: 22-1, high silica ceramic fiber cloth layer II: 22-2, aerogel insulation layer: 22-3, outer wire mesh: 22-3-1. Detailed Implementation

[0024] (Example 1)

[0025] See Figures 1 to 4This utility model has a connecting flange 1 and a drum-shaped skin 2 fixedly mounted on the connecting flange 1 at both ends. The drum-shaped skin 2 includes an inner steel wire mesh 21, a middle layer 22 and a fiberglass cloth 23 that are sequentially adhered to each other from the inside to the outside. A support ring 3 is fixedly provided inside the drum-shaped skin 2, and the ring wall of the support ring 3 is fixedly connected to the inner wall of the drum-shaped skin 2. The fixed connection between the support ring 3 and the drum-shaped skin 2 can ensure that the support ring 3 will not fall off due to separation from the inner wall of the drum-shaped skin 2 when the drum-shaped skin 2 is compensating, thereby enhancing the stability of the expansion joint during use.

[0026] The support ring 3 includes a ring 31 formed by elastic metal wires and a PTFE liner 32 covering the ring 31. It is also provided with multiple connecting steel wires 4 that can be wound with the inner steel wire mesh 21 and can drive the support ring 3 to be fixed to the inner steel wire mesh 21 after winding. The support ring 3 is fixed to the inner wall of the drum-shaped skin 2 by the winding and fixing of the connecting steel wires 4 with the inner steel wire mesh 21.

[0027] A steel sheet 33 is fixedly provided on the inner ring of the support ring 3, extending along the circumferential direction of the support ring 3. The steel sheet 33 is provided with teeth 331 that are evenly arranged along the extension direction of the steel sheet 33 and can be inserted into the connecting steel wire 4 to form a limiting position. The connecting steel wire 4 is installed and positioned on the support ring 3 by cooperating with the limiting position of the teeth 331.

[0028] The intermediate layer 22 includes fire-retardant silicone 221, ceramic cloth 222, fire-retardant silicone 223, ceramic cloth 224, and fire-retardant silicone 225. The inner side of fire-retardant silicone 221 is pressed onto the inner wire mesh 21 and the connecting wire 4 that is wound and fixed to the inner wire mesh 21 by high temperature heating. The outer side of fire-retardant silicone 221 and the inner side of fire-retardant silicone 223 are fused into ceramic cloth 222 by high temperature. The outer side of fire-retardant silicone 223 and the inner side of fire-retardant silicone 225 are fused into ceramic cloth 224 by high temperature. The outer side of fire-retardant silicone 225 is pressed onto fiberglass cloth 23 by high temperature.

[0029] The working principle of this utility model is as follows: A support ring 3 is fixedly provided inside the drum-shaped skin 2. The ring wall of the support ring 3 is fixedly connected to the inner wall of the drum-shaped skin 2. The support ring 3 is fixedly connected to the inner wire mesh 21 through the connecting steel wire 4. When the drum-shaped skin 2 deforms, the support ring 3 supports the peak of the drum-shaped skin 2, which can guide the deformation direction of the drum-shaped skin 2, avoid deformation, and also prevent the support ring 3 from falling off due to separation and compression from the inner wall of the drum-shaped skin 2.

[0030] (Example 2)

[0031] See Figure 5The intermediate layer 22 of this utility model includes a high-silica ceramic fiber cloth layer 22-1 on the outer side of the inner steel wire mesh 21 and a high-silica ceramic fiber cloth layer 22-2 on the inner side of the glass fiber cloth 23; an aerogel insulation layer 22-3 is provided between the high-silica ceramic fiber cloth layer 22-1 and the high-silica ceramic fiber cloth layer 22-2, and an outer steel wire mesh 22-3-1 is provided on the inner or outer side of the aerogel insulation layer 22-3.

[0032] An aerogel insulation layer 22-3 is provided between the high-silica ceramic fiber cloth layer 22-1 and the high-silica ceramic fiber cloth layer 22-2, which significantly improves the heat insulation performance of this utility model, gives this utility model better high temperature resistance, and significantly improves the service life of the correction roller expansion joint; on the other hand, it also significantly reduces the heat loss from the drum-shaped skin 2 to the outside, thus significantly reducing energy loss.

[0033] Meanwhile, an outer steel wire mesh 22-3-1 is provided on the inner or outer side of the aerogel insulation layer 22-3, which can improve the structural rigidity of this utility model.

[0034] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above descriptions are merely specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A composite correction roller expansion joint having a connecting flange (1) and a drum-shaped skin (2) fixedly arranged at both ends on the connecting flange (1); characterized in that: The drum-shaped skin (2) comprises an inner layer wire mesh (21), an intermediate layer (22) and a glass cloth (23) which are pasted to each other in sequence from inside to outside, and the inside of the drum-shaped skin (2) is fixedly provided with a supporting ring (3), and the ring wall of the supporting ring (3) is fixedly connected with the inner wall of the drum-shaped skin (2).

2. A composite correction roller expansion joint according to claim 1, characterized in that: The supporting ring (3) comprises a ring (31) surrounded by elastic metal wires and a tetrafluoro outer lining (32) wrapped on the ring (31), and a plurality of connecting wires (4) which can be wound with the inner layer wire mesh (21) and can drive the supporting ring (3) and the inner layer wire mesh (21) to be fixedly connected after winding, and the supporting ring (3) is fixedly connected with the inner wall of the drum-shaped skin (2) through the winding of the connecting wires (4) and the inner layer wire mesh (21).

3. A composite correction roller expansion joint according to claim 2, characterized in that: The inner ring of the supporting ring (3) is fixedly provided with a steel sheet (33) which is arranged along the circumferential direction of the supporting ring (3), and the steel sheet (33) is provided with a tooth groove (331) which is uniformly arranged along the extension direction of the steel sheet (33) and can be clamped into the inner layer to limit the connecting wire (4), and the connecting wire (4) is mounted and positioned on the supporting ring (3) through the limiting cooperation with the tooth groove (331).

4. A composite correction roller expansion joint according to claim 2, wherein: The intermediate layer (22) comprises fireproof silica gel one (221), ceramic cloth one (222), fireproof silica gel two (223), ceramic cloth two (224) and fireproof silica gel three (225), the inner side of the fireproof silica gel one (221) is pressed on the inner layer wire mesh (21) and the connecting wire (4) which is fixedly wound with the inner layer wire mesh (21) through high temperature, the outer side of the fireproof silica gel one (221) and the inner side of the fireproof silica gel two (223) are fused into the ceramic cloth one (222) through high temperature, the outer side of the fireproof silica gel two (223) and the inner side of the fireproof silica gel three (225) are fused into the ceramic cloth two (224) through high temperature, and the outer side of the fireproof silica gel three (225) is pressed on the glass cloth (23) through high temperature.

5. A composite correction roller expansion joint according to claim 4, wherein: The intermediate layer (22) comprises a high-silica ceramic fiber cloth layer one (22-1) outside the inner layer wire mesh (21) and a high-silica ceramic fiber cloth layer two (22-2) inside the glass cloth (23); the high-silica ceramic fiber cloth layer one (22-1) and the high-silica ceramic fiber cloth layer two (22-2) are provided with an aerogel thermal insulation layer (22-3) therebetween.

6. A composite correction roller expansion joint according to claim 5, wherein: The inner side or the outer side of the aerogel thermal insulation layer (22-3) is provided with an outer layer wire mesh (22-3-1).

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