Nonmetal composite correction roller expansion joint

Abstract

The utility model relates to a nonmetal composite deviation rectifying roller expansion joint which is provided with a back plate flange, a connecting flange and a drum-shaped skin, wherein the two ends of the drum-shaped skin are fixedly arranged on the back plate flange and the connecting flange respectively. A guide cylinder is further arranged, the guide cylinder is provided with an extending end extending into the drum-shaped skin and a fixed end fixedly connected with the back plate flange, and the extending end of the guide cylinder extends horizontally; a supporting ring is arranged in the drum-shaped skin, the ring wall of the supporting ring is fixedly connected with the inner wall of the drum-shaped skin, the drum-shaped skin comprises an inner-layer steel wire mesh, a middle layer and glass fabric, and the supporting ring comprises a ring and a teflon outer lining wrapping the ring. A plurality of connecting steel wires which can be wound with the inner-layer steel wire mesh and can be fixed with the inner-layer steel wire mesh after being wound are arranged on the teflon outer lining, and the supporting ring is fixedly connected with the inner wall of the drum-shaped skin through winding and fixing of the connecting steel wires and the inner-layer steel wire mesh. And stable use is ensured.

Description

Technical Field

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

[0002] Non-metallic composite alignment roller expansion joints are key components used in annealing furnaces in the steel industry. Their main function is to ensure the stability of the roller system and the entire unit within the furnace. These expansion joints employ a non-metallic alignment roller design to accommodate the radial and axial compensation required during operation.

[0003] When using non-metallic composite correction roller expansion joints, to ensure that the expansion joint maintains a certain shape and structural stability, it is necessary to fill the drum-shaped skin with gas. During filling, since the gas is directly injected into the drum-shaped skin from the air inlet of the air filling device, and the air inlet is small, the gas will flow around in the drum-shaped skin, forming turbulence. Turbulence will increase the internal friction of the fluid, thereby increasing energy loss and reducing the overall efficiency of the system. Summary of the Invention

[0004] The purpose of this invention is to provide a non-metallic composite correction roller expansion joint that can reduce turbulence of gas inside the drum-shaped skin, reduce energy loss, and increase the overall efficiency of the system.

[0005] The technical solution to achieve the purpose of this utility model is as follows: This utility model has a back plate flange, a connecting flange, and a drum-shaped skin that is fixedly mounted on the back plate flange and the connecting flange at both ends respectively; it also has a flow guide tube, which has an extension end extending into the inside of the drum-shaped skin and a fixed end fixedly connected to the back plate flange, wherein the extension end of the flow guide tube is horizontally extended; a support ring is provided 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.

[0006] Furthermore, the drum-shaped skin includes an inner layer of steel wire mesh, a middle layer, and fiberglass cloth that are sequentially adhered to each other from the inside out. The support ring includes a ring formed by elastic metal wires and a PTFE liner covering the ring. The PTFE liner is provided with multiple connecting steel wires that can be wound around the inner layer of steel wire mesh and can be fixed to the inner layer of steel wire mesh after winding. The support ring is fixed to the inner wall of the drum-shaped skin by the winding and fixing of the multiple connecting steel wires with the inner layer of steel wire mesh.

[0007] Furthermore, an air inlet pipe is provided at one end, which can be connected to an external cooling air blowing device. The connecting flange includes a first flange plate, a second flange plate, and a short connecting plate. The first flange plate is fixedly connected to the drum-shaped skin. The short connecting plate is located between the first flange plate and the second flange plate. The two ends of the short connecting plate are fixedly connected to one side of the inner wall of the first flange plate and one side of the inner wall of the second flange plate, respectively. The first flange plate, the second flange plate, and the short connecting plate form a placement space for the air inlet pipe to be placed. The short connecting plate is provided with a through hole for the air inlet pipe to be inserted. The other end of the air inlet pipe extends into the interior of the drum-shaped skin through the through hole. The interior of the through hole is provided with a sealing ring for filling the gap between the air inlet pipe and the hole wall of the through hole.

[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 a layer of fire-retardant silicone, a layer of ceramic cloth, a second layer of fire-retardant silicone, a third layer of ceramic cloth, and a fourth layer of fire-retardant silicone. The inner side of the first layer of fire-retardant silicone is pressed onto the inner layer of steel wire mesh and the connecting steel wire that is wound and fixed with the inner layer of steel wire mesh by high temperature heating. The outer side of the first layer of fire-retardant silicone and the inner side of the second layer of fire-retardant silicone are fused into the first layer of ceramic cloth by high temperature. The outer side of the second layer of fire-retardant silicone and the inner side of the third layer of fire-retardant silicone are fused into the second layer of ceramic cloth by high temperature. The outer side of the third layer of fire-retardant silicone is pressed onto the fiberglass cloth by high temperature.

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

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

[0012] This utility model has positive effects: (1) This utility model solves the problem of turbulent flow of the filled gas inside the drum-shaped skin. The guide tube has an extension end extending into the inside of the drum-shaped skin and a fixed end fixedly connected to the back plate flange. The extension end of the guide tube is horizontally extended. When the gas is filled into the drum-shaped skin through the connecting flange, the guide tube can guide the filled gas and separate the filled gas on the outer wall of the guide tube, so as to avoid the gas flowing around inside the drum-shaped skin and forming turbulence, which would cause the compensation effect to fail to meet the standard. The guide tube separates the gas outside the guide tube, which can reduce turbulence, reduce energy loss, and increase the overall efficiency of the system.

[0013] (2) This utility model solves the problem of unstable structure of drum-shaped skin. The drum-shaped skin is provided with a support ring inside, and the ring wall of the support ring is fixedly connected to the inner wall of the drum-shaped skin. Through the fixed connection between the support ring and the inner wall of the drum-shaped skin, it can be ensured 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.

[0014] (3) The present invention is also provided with an air inlet pipe that can be connected to an external cooling air blowing device. The short plate is provided with a through hole for the air inlet pipe to be inserted. The air inlet pipe extends into the interior of the drum-shaped skin through the through hole. The interior of the through hole is provided with a sealing ring for filling the gap between the inlet pipe and the hole wall. The air inlet pipe can fill the interior of the drum-shaped skin with the cooling gas of the external cooling air blowing device, so that the drum-shaped skin that generates heat after multiple deformations can be cooled, thus extending the service life of the expansion joint.

[0015] (4) The inner ring of the support ring of this utility model is fixedly provided with a steel sheet extending along the circumference of the support ring. The steel sheet is provided with a toothed groove in which the extending steel sheet is evenly arranged 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 the limiting cooperation with the toothed groove. When the support ring and the inner wall of the drum-shaped skin are fixedly connected by the connecting steel wire, the connecting steel wire will not slide on the ring wall of the support ring, which would cause the fixed connection between the support ring and the drum-shaped skin to be unstable. At the same time, the locking and limiting of the connecting steel wire and the toothed groove can make the connecting steel wire easier to position during installation, which is convenient for installation.

[0016] (5) The drum-shaped skin of this utility model is composed of fireproof silicone, ceramic cloth and other materials. The fireproof silicone is non-toxic and odorless, has good thermal stability, stable chemical properties, can withstand high operating pressure and has high mechanical strength; the 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. 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 for Figure 1 A schematic diagram of the structure of Embodiment 1 in Part A;

[0021] Figure 4for 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 following components are included: back flange: 1, connecting flange: 2, first flange plate: 21, second flange plate: 22, short joint plate: 23, drum-shaped skin: 3, inner wire mesh: 31, intermediate layer: 32, first layer of fireproof silicone: 321, first layer of ceramic cloth: 322, second layer of fireproof silicone: 323, second layer of ceramic cloth: 324, third layer of fireproof silicone: 325, fiberglass cloth: 33, guide tube: 4, support ring: 5, ring: 52, PTFE liner: 53, connecting wire: 54, steel sheet: 55, toothed groove: 551, air inlet pipe: 6, first layer of high silica ceramic fiber cloth: 32-1, second layer of high silica ceramic fiber cloth: 32-2, aerogel insulation layer: 32-3, outer wire mesh: 32-3-1. Detailed Implementation

[0024] (Example 1)

[0025] See Figures 1 to 4 The present invention comprises a back flange 1, a connecting flange 2, and a drum-shaped skin 3 fixedly mounted on the back flange 1 and the connecting flange 2 at both ends respectively; it also comprises a flow guide tube 4, which has an extension end extending into the interior of the drum-shaped skin 3 and a fixed end fixedly connected to the back flange 1, wherein the extension end of the flow guide tube 4 extends horizontally; a support ring 5 is provided inside the drum-shaped skin 3, and the ring wall of the support ring 5 is fixedly connected to the inner wall of the drum-shaped skin 3.

[0026] The axis of the guide tube 4 is aligned with the axis of the back flange 1. The fixed end of the guide tube 4 and the back flange 1 are fixed together by studs and nuts to fix the drum-shaped skin 3 between the fixed end of the guide tube 4 and the back flange 1. At the same time, the fixed end of the guide tube 4 and the back flange 1 are fixedly connected by studs and nuts.

[0027] The drum-shaped skin 3 includes an inner layer of steel wire mesh 31, a middle layer 32, and a fiberglass cloth 33 that are sequentially adhered to each other from the inside out. The support ring 5 includes a ring 52 formed by elastic metal wires and a PTFE outer liner 53 covering the ring 52. The PTFE outer liner 53 is provided with multiple connecting steel wires 54 that can be wound around the inner layer of steel wire mesh 31 and can be fixed to the inner layer of steel wire mesh 31 after winding. The support ring 5 is fixedly connected to the inner wall of the drum-shaped skin 3 by the winding and fixing of the multiple connecting steel wires 54 with the inner layer of steel wire mesh 31.

[0028] The PTFE liner 53 can reduce the friction between the ring wall of the support ring 5 and the inner wire mesh 31 when the drum-shaped skin 3 deforms, thus extending the service life.

[0029] It is also provided with an air inlet pipe 6 that can be connected to an external cooling air blowing device at one end. The connecting flange 2 includes a first flange plate 21, a second flange plate 22, and a short connecting plate 23. The first flange plate 21 is fixedly connected to the drum-shaped skin 3. The short connecting plate 23 is located between the first flange plate 21 and the second flange plate 22. The two ends of the short connecting plate 23 are fixedly connected to one side of the inner wall of the first flange plate 21 and one side of the inner wall of the second flange plate 22, respectively. The first flange plate 21, the second flange plate 22, and the short connecting plate 23 form a placement space for the air inlet pipe 6 to be placed. The short connecting plate 23 is provided with a through hole for the air inlet pipe 6 to be inserted. The other end of the air inlet pipe 6 extends into the interior of the drum-shaped skin 3 through the through hole. The interior of the through hole is provided with a sealing ring for filling the gap between the air inlet pipe 6 and the hole wall of the through hole.

[0030] A steel sheet 55 is fixedly provided on the inner ring of the support ring 5, extending along the circumferential direction of the support ring 5. The steel sheet 55 is provided with toothed grooves 551 that are evenly arranged along the extension direction of the steel sheet 55 and can be inserted into the connecting steel wire 54 to form a limiting position. The connecting steel wire 54 is installed and positioned on the support ring 5 by cooperating with the limiting position of the toothed groove 551.

[0031] The intermediate layer 32 includes a fire-retardant silicone 321, a ceramic cloth 322, a fire-retardant silicone 323, a ceramic cloth 324, and a fire-retardant silicone 325. The inner side of the fire-retardant silicone 321 is pressed onto the inner wire mesh 31 and the connecting wire 54 that is wound and fixed to the inner wire mesh 31 by high temperature heating. The outer side of the fire-retardant silicone 321 and the inner side of the fire-retardant silicone 323 are fused into the ceramic cloth 322 by high temperature. The outer side of the fire-retardant silicone 323 and the inner side of the fire-retardant silicone 325 are fused into the ceramic cloth 324 by high temperature. The outer side of the fire-retardant silicone 325 is pressed onto the fiberglass cloth 33 by high temperature.

[0032] The working principle of this utility model is as follows: The back plate flange 1 is installed on the equipment, and the filling gas is introduced into the drum-shaped skin 3 at the connecting flange 2. The filling gas fills the interior of the guide tube 4, and the excess gas flows evenly from the extension end of the guide tube 4 to the interior of the drum-shaped skin 3. Under the guidance of the guide tube, the filling gas is evenly separated into the interior and exterior of the guide tube, thus avoiding turbulence.

[0033] The support ring 5 is installed on the drum-shaped skin 3. The support ring 5 is wound together with the inner steel wire mesh 31 by the connecting screw 54. When the connecting screw 54 is wound, it will be inserted into the tooth groove 551. With the cooperation of the connecting screw 54 and the tooth groove 551, the connecting screw 54 is positioned on the support ring 5 and will not slip.

[0034] (Example 2)

[0035] See Figure 5 The intermediate layer 32 of this utility model includes a high-silica ceramic fiber cloth layer 32-1 on the outer side of the inner steel wire mesh 31 and a second high-silica ceramic fiber cloth layer 32-2 on the inner side of the fiberglass cloth 33; an aerogel insulation layer 32-3 is provided between the first high-silica ceramic fiber cloth layer 32-1 and the second high-silica ceramic fiber cloth layer 32-2; an outer steel wire mesh 32-3-1 is provided on the inner or outer side of the aerogel insulation layer 32-3.

[0036] An aerogel insulation layer 32-3 is provided between the first layer of high silica ceramic fiber cloth 32-1 and the second layer of high silica ceramic fiber cloth 32-2, 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 3 to the outside, thus significantly reducing energy loss.

[0037] Meanwhile, an outer steel wire mesh 32-3-1 is provided on the inner or outer side of the aerogel insulation layer 32-3, which can improve the structural rigidity of this utility model.

[0038] 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 non-metallic composite alignment roller expansion joint, comprising a back flange (1), a connecting flange (2), and a drum-shaped skin (3) fixedly disposed at both ends on the back flange (1) and the connecting flange (2); characterized in that: It is also provided with a flow guide tube (4), which has an extension end extending into the interior of the drum-shaped skin (3) and a fixed end fixedly connected to the back plate flange (1). The extension end of the flow guide tube (4) is horizontally extended. The interior of the drum-shaped skin (3) is provided with a support ring (5), and the ring wall of the support ring (5) is fixedly connected to the inner wall of the drum-shaped skin (3).

2. The non-metallic composite correction roller expansion joint according to claim 1, characterized in that: The drum-shaped skin (3) includes an inner layer of steel wire mesh (31), a middle layer (32) and a fiberglass cloth (33) that are sequentially adhered to each other from the inside to the outside. The support ring (5) includes a ring (52) formed by elastic metal wires and a PTFE liner (53) covering the ring (52). It is also provided with multiple connecting steel wires (54) that can be wound with the inner layer of steel wire mesh (31) and can drive the support ring (5) to be fixed with the inner layer of steel wire mesh (31) after winding. The support ring (5) is fixed to the inner wall of the drum-shaped skin (3) by the winding of multiple connecting steel wires (54) with the inner layer of steel wire mesh (31).

3. The non-metallic composite correction roller expansion joint according to claim 1, characterized in that: An air inlet pipe (6) is also provided, one end of which can be connected to an external cooling air blowing device. The connecting flange (2) includes a first flange plate (21), a second flange plate (22), and a short connecting plate (23). The first flange plate (21) is fixedly connected to the drum-shaped skin (3). The short connecting plate (23) is located between the first flange plate (21) and the second flange plate (22). The two ends of the short connecting plate (23) are fixedly connected to one side of the inner wall of the first flange plate (21) and one side of the inner wall of the second flange plate (22), respectively. The first flange plate (21), the second flange plate (22), and the short connecting plate (23) form a placement space in which the air inlet pipe (6) can be placed. The short connecting plate (23) is provided with a through hole for the air inlet pipe (6) to be inserted. The other end of the air inlet pipe (6) extends through the through hole to the inside of the drum-shaped skin (3). The inside of the through hole is provided with a sealing ring for filling the gap between the air inlet pipe (6) and the hole wall of the through hole.

4. A non-metallic composite correction roller expansion joint according to claim 2, characterized in that: The inner ring of the support ring (5) is fixedly provided with a steel plate (55) extending along the circumferential direction of the support ring (5). The steel plate (55) is provided with a toothed groove (551) evenly arranged along the extension direction of the steel plate (55) and which can be inserted into the connecting wire (54) to form a limiting position. The connecting wire (54) is positioned on the support ring (5) by the limiting cooperation with the toothed groove (551).

5. A non-metallic composite correction roller expansion joint according to claim 2, characterized in that: The intermediate layer (32) includes a fireproof silicone (321), a ceramic cloth (322), a second fireproof silicone (323), a second ceramic cloth (324), and a third fireproof silicone (325). The inner side of the first fireproof silicone (321) is pressed onto the inner wire mesh (31) and the connecting wire (54) that is wound and fixed with the inner wire mesh (31) by high temperature heating. The outer side of the first fireproof silicone (321) and the inner side of the second fireproof silicone (323) are fused into the first ceramic cloth (322) by high temperature. The outer side of the second fireproof silicone (323) and the inner side of the third fireproof silicone (325) are fused into the second ceramic cloth (324) by high temperature. The outer side of the third fireproof silicone (325) is pressed onto the fiberglass cloth (33) by high temperature.

6. A composite corrective roller expansion joint according to claim 2, characterized in that: The intermediate layer (32) includes a high-silica ceramic fiber cloth layer (32-1) on the outside of the inner wire mesh (31) and a second high-silica ceramic fiber cloth layer (32-2) on the inside of the fiberglass cloth (33); an aerogel insulation layer (32-3) is provided between the first high-silica ceramic fiber cloth layer (32-1) and the second high-silica ceramic fiber cloth layer (32-2).

7. A composite correction roller expansion joint according to claim 6, characterized in that: The aerogel insulation layer (32-3) is provided with an outer wire mesh (32-3-1) on the inner or outer side.

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