Fireproof flexible joint

Abstract

The utility model relates to the technical field of fireproof soft connectors, in particular to a fireproof soft connector which comprises a soft connector body, a double-layer pipe sleeve wrapping the periphery of the soft connector body and a heat insulation layer arranged between the double-layer pipe sleeve, the double-layer pipe sleeve comprises an inner pipe sleeve body and an outer pipe sleeve body, and the inner pipe sleeve body and the outer pipe sleeve body are formed by sewing high-temperature-resistant cloth with high-temperature-resistant inner supporting ribs and high-temperature-resistant outer supporting ribs through high-temperature lines. By wrapping the periphery of the soft joint with the double-layer pipe sleeve and arranging the heat insulation layer between the double-layer pipe sleeve, the peripheral end of the soft joint can have better high temperature resistance, the integrity and stability of the soft joint structure can be effectively kept, and according to different contact environments of the inner layer and the outer layer, the soft joint can be prevented from being flattened by suction. The inner pipe sleeve and the outer pipe sleeve can meet corresponding use requirements, the inner pipe sleeve and the outer pipe sleeve are formed by sewing the high-temperature-resistant cloth with the high-temperature-resistant inner supporting rib and the high-temperature-resistant outer supporting rib through the high-temperature lines, the stable supporting effect on the soft connector can be kept, it is guaranteed that the soft connector cannot be flattened through suction under negative pressure, and a guide pipe can be replaced to have the better high-temperature-resistant property.

Description

Technical Field

[0001] The invention relates to the technical field of fireproof flexible joints, in particular to a fireproof flexible joint. Background Art

[0002] The air duct is a piping system used for air delivery and distribution. According to the cross-sectional shape, the air duct can be divided into circular air duct, rectangular air duct and other types. The existing air ducts need to be connected by fireproof flexible joints, but the existing fireproof flexible joints have poor high temperature resistance. When high-temperature exhaust treatment is required during special periods, traditional fireproof flexible joints cannot support the air volume delivery treatment at high temperatures for a long time. Even worse, spontaneous combustion may occur, causing serious consequences. However, due to the structural flexibility requirements of the flexible joint itself, the flexible joint needs to maintain its own support stability while also being able to meet certain high temperature resistance properties. Therefore, a fireproof flexible joint is needed. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a fireproof flexible joint, which is used to solve the problem that the flexible joint in the prior art can have better high temperature resistance.

[0004] To achieve the above objectives and other related objectives, the present invention provides the following technical solutions:

[0005] A fireproof flexible joint comprises a flexible joint, a double-layer pipe sleeve wrapped around the outer periphery of the flexible joint, and a heat insulating layer arranged between the double-layer pipe sleeves, wherein the double-layer pipe sleeve comprises an inner pipe sleeve and an outer pipe sleeve, wherein the inner pipe sleeve and the outer pipe sleeve are both formed by sewing high-temperature resistant cloth with high-temperature resistant inner and outer supporting ribs through high-temperature lines, so as to support the flexible joint so as not to be sucked flat under negative pressure.

[0006] To implement the above technical solution, a double-layer pipe sleeve is wrapped around the outer periphery of the flexible joint, and a heat-insulating layer is arranged between the double-layer pipe sleeves, so that the outer end of the flexible joint can better withstand high temperatures, and the integrity and stability of the flexible joint structure can be effectively maintained. According to the different environments in which the inner and outer layers contact, the inner pipe sleeve and the outer pipe sleeve can meet the corresponding usage requirements. The inner and outer pipe sleeves are formed by sewing high-temperature resistant cloth through high-temperature lines and high-temperature resistant inner and outer supporting ribs, so as to maintain a stable support effect on the flexible joint, ensure that the flexible joint will not be sucked flat under negative pressure, and can replace the catheter with better high-temperature resistance.

[0007] In one embodiment of the present invention, a flanged sealing layer is provided between the inner sleeve and the outer sleeve near the root of the flexible joint, and an annular covering belt is provided between the flanged sealing layer and the flexible joint.

[0008] To implement the above technical solution, a flanged sealing layer is provided between the inner sleeve and the outer sleeve near the root of the flexible joint to facilitate installation with the external flange, and the annular covering belt can play an auxiliary sealing role.

[0009] In one embodiment of the present invention, a horizontal straight tube sealing layer is provided between the inner tube sleeve and the outer tube sleeve near the root of the flexible joint, and an annular covering belt is provided between the straight tube sealing layer and the flexible joint.

[0010] To implement the above technical solution, the straight tube sealing layer in the horizontal direction between the inner sleeve and the outer sleeve near the root of the flexible joint can be easily installed with the external flange, and the annular covering belt can play an auxiliary sealing role.

[0011] In one embodiment of the present invention, the outer pipe sleeve includes a first outer refractory layer and a skin layer, a second outer refractory layer is provided between the first outer refractory layer and the skin layer, and the high temperature resistant external support ribs are provided between the first outer refractory layer and the second outer refractory layer.

[0012] To implement the above technical solution, by providing a skin layer, the high temperature resistance of the outer pipe sleeve can be improved while being wrapped by the skin layer, and the high temperature resistant external support ribs are provided between the first outer refractory layer and the second outer refractory layer and sewn with high temperature thread. The high temperature resistant external support ribs can be used to maintain the support reliability of the first outer refractory layer and the second outer refractory layer and improve the support stability under high temperature.

[0013] In one embodiment of the present invention, the first outer refractory layer and the second outer refractory layer are both high-silica cloth, carbon fiber cloth, basalt cloth, ceramic fiber cloth or quartz fiber cloth, the skin layer is made of silicone cloth, and the outer support ribs are made of stainless steel or carbon steel.

[0014] To implement the above technical solution, high-silica cloth, carbon fiber cloth, basalt cloth, ceramic fiber cloth or quartz fiber cloth all have good high temperature resistance and can withstand temperatures of 1000 degrees for a long time. High-temperature sewing thread can be made of quartz fiber thread or stainless steel wire. The high-temperature resistant external supporting rib support structure made of stainless steel or carbon steel ensures that the flexible joint will not be sucked flat under negative pressure.

[0015] In one embodiment of the present invention, the inner pipe sleeve includes a double-layer inner fire-resistant layer, the inner support ribs are arranged between the double-layer inner fire-resistant layers, the outer side of the inner fire-resistant layer is wrapped with a soft sealing layer, and the soft sealing layer includes a high-temperature resistant metal support layer and an inner soft sealing layer.

[0016] To implement the above technical solution, by arranging internal supporting ribs between the double-layer inner refractory layers, the inner refractory layers can be supported. By wrapping a layer of high-temperature resistant metal supporting layer and a layer of internal soft-jointed sealing layer on the outside of the inner refractory layer, the high-temperature resistant properties of the inner refractory layer can be improved. In addition, the high-temperature resistant metal supporting layer can also be used to provide support, thereby improving the support stability of the inner pipe sleeve.

[0017] In one embodiment of the present invention, the inner support rib is made of stainless steel, the high temperature resistant metal support layer is made of copper foil, which can maintain sealing performance while being resistant to high temperatures, and the soft joint sealing layer is made of silicone cloth.

[0018] To implement the above technical solution, the high-temperature resistant internal supporting rib support structure made of stainless steel ensures that the flexible joint will not be sucked flat under negative pressure and has good supporting properties. The flexible joint is sealed by silicone cloth and copper foil. The silicone cloth has a long-term temperature resistance of 220 degrees and a short-term temperature resistance of 280 degrees. The copper foil has a long-term temperature resistance of more than 500 degrees, which can improve the high-temperature stability and reliability of the flexible joint.

[0019] In one embodiment of the present invention, the flexible connection is in a rectangular or circular shape.

[0020] The implementation of the above technical solution can meet actual usage requirements and improve the coordination stability with the pipeline.

[0021] In one embodiment of the present invention, the heat insulation layer is made of ceramic fiber wool.

[0022] To implement the above technical solution, ceramic fiber blanket is selected as the thermal insulation material, with a thickness of not less than 50MM, a long-term temperature resistance of 1000 degrees, and good thermal insulation properties.

[0023] As described above, a fireproof flexible joint of the present invention has the following beneficial effects: by wrapping the outer periphery of the flexible joint with a double-layer pipe sleeve and arranging a heat insulation layer between the double-layer pipe sleeves, the outer end of the flexible joint can be better resistant to high temperatures, and the integrity and stability of the flexible joint structure can be effectively maintained. According to the different environments in which the inner and outer layers contact, the inner pipe sleeve and the outer pipe sleeve can meet the corresponding use requirements. By sewing the inner and outer pipe sleeves with high-temperature resistant cloth through high-temperature lines and high-temperature resistant inner and outer supporting ribs, the effect of stable support for the flexible joint can be maintained, ensuring that the flexible joint will not be sucked flat under negative pressure. It can replace the catheter with better high-temperature resistance. A flanged sealing layer is provided between the inner and outer pipe sleeves near the root of the flexible joint to facilitate installation with the external flange, and the annular covering belt can play an auxiliary sealing role. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Shown is a schematic diagram of the structure of the fireproof flexible joint disclosed in an embodiment of the present invention.

[0025] Figure 2 Display as Figure 1 A partial enlarged view of the figure marked A.

[0026] Figure 3 Display as Figure 1 A partial enlarged view of the figure marked B.

[0027] Figure 4Shown is a schematic diagram of a rectangular flexible joint structure of a fireproof flexible joint disclosed in an embodiment of the present invention.

[0028] Figure 5 Shown is a schematic diagram of a circular flexible joint structure of a fireproof flexible joint disclosed in an embodiment of the present invention.

[0029] Figure 6 Shown is a schematic diagram of the straight-tube flexible joint structure of the fireproof flexible joint disclosed in an embodiment of the present invention.

[0030] Component number description

[0031] 1. Soft joint; 2. Inner pipe sleeve; 3. Outer pipe sleeve; 4. Flanged sealing layer; 5. Annular covering belt; 6. First outer fire-resistant layer; 7. Skin layer; 8. Second outer fire-resistant layer; 9. Outer supporting ribs; 10. Inner fire-resistant layer; 11. Inner supporting ribs; 12. High temperature resistant metal supporting layer; 13. Straight tube sealing layer; 14. Inner soft joint sealing layer; 15. Thermal insulation layer. DETAILED DESCRIPTION

[0032] The following specific embodiments illustrate the implementation of the present invention, and those familiar with the technology can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0033] See also Figures 1 to 5 , specific embodiment 1:

[0034] The present invention provides a fireproof flexible joint, comprising a flexible joint 1, a double-layer pipe sleeve wrapped around the outer periphery of the flexible joint 1, and a heat insulating layer 15 arranged between the double-layer pipe sleeves, the double-layer pipe sleeve comprising an inner pipe sleeve 2 and an outer pipe sleeve 3, the inner and outer pipe sleeves 3 are both made of high-temperature resistant cloth sewn with high-temperature resistant inner and outer supporting ribs 9 through high-temperature lines, and the supporting flexible joint 1 will not be sucked flat under negative pressure.

[0035] By wrapping the outer periphery of the flexible joint 1 with a double-layer pipe sleeve and arranging a heat insulating layer 15 between the double-layer pipe sleeves, the outer end of the flexible joint 1 can be better resistant to high temperatures, and the integrity and stability of the structure of the flexible joint 1 can be effectively maintained. According to the different environments in which the inner and outer layers contact, the inner pipe sleeve 2 and the outer pipe sleeve 3 can meet the corresponding usage requirements. By sewing the inner and outer pipe sleeves 3 with high-temperature resistant cloth through high-temperature lines and high-temperature resistant inner and outer supporting ribs 9, the effect of stable support for the flexible joint 1 can be maintained, ensuring that the flexible joint 1 will not be sucked flat under negative pressure, and can replace the catheter with better high-temperature resistance.

[0036] A flanged sealing layer 4 is provided between the inner pipe sleeve 2 and the outer pipe sleeve 3 near the root of the flexible joint 1, and an annular covering belt 5 is provided between the flanged sealing layer 4 and the flexible joint 1. A flanged sealing layer 4 is provided between the inner pipe sleeve 2 and the outer pipe sleeve 3 near the root of the flexible joint 1 to facilitate installation with the external flange, and the annular covering belt 5 can play a role of auxiliary sealing.

[0037] The outer pipe sleeve 3 includes a first outer refractory layer 6 and a skin layer 7, a second outer refractory layer 8 is provided between the first outer refractory layer 6 and the skin layer 7, and a high-temperature resistant external support rib 9 is provided between the first outer refractory layer 6 and the second outer refractory layer 8. By providing the skin layer 7, the high-temperature resistance of the outer pipe sleeve 3 can be improved while being wrapped by the skin layer 7. The high-temperature resistant external support rib 9 is provided between the first outer refractory layer 6 and the second outer refractory layer 8 and is sewn with high-temperature thread. The high-temperature resistant external support rib 9 can be used to maintain the support reliability of the first outer refractory layer 6 and the second outer refractory layer 8, and improve the support stability under high temperature.

[0038] The first outer refractory layer 6 and the second outer refractory layer 8 are both high-silica cloth or quartz fiber cloth, the skin layer 7 is made of silicone cloth, and the high-temperature resistant outer supporting ribs 9 are made of stainless steel. High-silica cloth, carbon fiber cloth, basalt cloth, ceramic fiber cloth or quartz fiber cloth all have good high-temperature resistance and can withstand temperatures of 1000 degrees for a long time. High-temperature sewing thread can be made of quartz fiber thread or stainless steel wire; the high-temperature resistant outer supporting rib support structure made of stainless steel or carbon steel ensures that the flexible joint will not be sucked flat under negative pressure.

[0039] The inner pipe sleeve 2 includes a double-layer inner refractory layer 10, and the inner supporting ribs 11 are arranged between the double-layer inner refractory layers 10. The outer side of the inner refractory layer 10 is wrapped with a soft joint 1 sealing layer. The soft joint 1 sealing layer includes a layer of high-temperature resistant metal support layer 12 and a layer of inner soft joint sealing layer 14. By arranging the inner supporting ribs 11 between the double-layer inner refractory layers 10, the inner refractory layer 10 can be supported. By wrapping the outer side of the inner refractory layer 10 with a layer of high-temperature resistant metal support layer 12 and a layer of inner soft joint sealing layer 14, the high-temperature resistant property of the inner refractory layer 10 can be improved, and the high-temperature resistant metal support layer 12 can also be used to have support, so that the support stability of the inner pipe sleeve 2 is better.

[0040] The inner supporting rib 11 is made of stainless steel, and the high-temperature resistant metal supporting layer 12 is made of copper foil. The copper foil can meet the support requirements and can withstand high temperatures. The sealing layer of the flexible joint 1 is made of silicone cloth. The support structure of the high-temperature resistant inner supporting rib 11 made of stainless steel ensures that the flexible joint 1 will not be sucked flat under negative pressure and has good support. The flexible joint 1 is sealed by silicone cloth and copper foil. The silicone cloth has a long-term temperature resistance of 220 degrees and a short-term temperature resistance of 280 degrees. The copper foil has a long-term temperature resistance of more than 500 degrees, which can improve the high-temperature stability and reliability of the flexible joint.

[0041] The flexible joint 1 is rectangular or circular in shape, which can meet the actual use requirements and improve the matching stability with the pipeline. The thermal insulation layer 15 is made of ceramic fiber cotton. The thermal insulation material is a ceramic fiber blanket with a thickness of not less than 50MM. It can withstand a temperature of 1000 degrees for a long time and has good thermal insulation properties. Specific embodiment 2:

[0043] See also Figures 1 to 6 The present invention provides a fireproof flexible joint 1, comprising a flexible joint 1, a double-layer pipe sleeve wrapped around the outer periphery of the flexible joint 1, and a heat insulating layer 15 arranged between the double-layer pipe sleeves, the double-layer pipe sleeve comprising an inner pipe sleeve 2 and an outer pipe sleeve 3, the inner and outer pipe sleeves 3 are both made of high-temperature resistant cloth sewn with high-temperature resistant inner and outer supporting ribs 9 through high-temperature lines, and the supporting flexible joint 1 will not be sucked flat under negative pressure.

[0044] By wrapping the outer periphery of the flexible joint 1 with a double-layer pipe sleeve and arranging a heat insulating layer 15 between the double-layer pipe sleeves, the outer end of the flexible joint 1 can be better resistant to high temperatures, and the integrity and stability of the structure of the flexible joint 1 can be effectively maintained. According to the different environments in which the inner and outer layers contact, the inner pipe sleeve 2 and the outer pipe sleeve 3 can meet the corresponding usage requirements. By sewing the inner and outer pipe sleeves 3 with high-temperature resistant cloth through high-temperature lines and high-temperature resistant inner and outer supporting ribs 9, the effect of stable support for the flexible joint 1 can be maintained, ensuring that the flexible joint 1 will not be sucked flat under negative pressure, and can replace the catheter with better high-temperature resistance.

[0045] A horizontal straight sealing layer 13 is provided between the inner pipe sleeve 2 and the outer pipe sleeve 3 near the root of the flexible joint 1, and an annular covering belt 5 is provided between the straight sealing layer 13 and the flexible joint 1. The horizontal straight sealing layer 13 between the inner pipe sleeve 2 and the outer pipe sleeve 3 near the root of the flexible joint 1 can be conveniently installed with the external flange, and the annular covering belt 5 can play a role of auxiliary sealing.

[0046] The outer pipe sleeve 3 includes a first outer refractory layer 6 and a skin layer 7, a second outer refractory layer 8 is provided between the first outer refractory layer 6 and the skin layer 7, and a high-temperature resistant external support rib 9 is provided between the first outer refractory layer 6 and the second outer refractory layer 8. By providing the skin layer 7, the high-temperature resistance of the outer pipe sleeve 3 can be improved while being wrapped by the skin layer 7. The high-temperature resistant external support rib 9 is provided between the first outer refractory layer 6 and the second outer refractory layer 8 and is sewn with high-temperature thread. The high-temperature resistant external support rib 9 can be used to maintain the support reliability of the first outer refractory layer 6 and the second outer refractory layer 8, and improve the support stability under high temperature.

[0047] The first outer refractory layer 6 and the second outer refractory layer 8 are both high-silica cloth or quartz fiber cloth, the skin layer 7 is made of silicone cloth, and the high-temperature resistant outer supporting ribs 9 are made of stainless steel. High-silica cloth, carbon fiber cloth, basalt cloth, ceramic fiber cloth or quartz fiber cloth all have good high-temperature resistance and can withstand temperatures of 1000 degrees for a long time. High-temperature sewing thread can be made of quartz fiber thread or stainless steel wire; the high-temperature resistant outer supporting rib support structure made of stainless steel or carbon steel ensures that the flexible joint will not be sucked flat under negative pressure.

[0048] The inner pipe sleeve 2 includes a double-layer inner refractory layer 10, and the inner supporting ribs 11 are arranged between the double-layer inner refractory layers 10. The outer side of the inner refractory layer 10 is wrapped with a soft-jointed sealing layer 14. The soft-jointed sealing layer 14 includes a layer of high-temperature resistant metal supporting layer 12 and a layer of inner soft-jointed sealing layer 14. By arranging the inner supporting ribs 11 between the double-layer inner refractory layers 10, the inner refractory layer 10 can be supported. By wrapping the outer side of the inner refractory layer 10 with a layer of high-temperature resistant metal supporting layer 12 and a layer of inner soft-jointed sealing layer 14, the high-temperature resistant property of the inner refractory layer 10 can be improved, and the high-temperature resistant metal supporting layer 12 can also be used to have support, so that the support stability of the inner pipe sleeve 2 is better.

[0049] The inner supporting rib 11 is made of stainless steel, and the high-temperature resistant metal supporting layer 12 is made of copper foil. The copper foil can meet the support requirements and can withstand high temperatures. The sealing layer of the flexible joint 1 is made of silicone cloth. The support structure of the high-temperature resistant inner supporting rib 11 made of stainless steel ensures that the flexible joint 1 will not be sucked flat under negative pressure and has good support. The flexible joint 1 is sealed by silicone cloth and copper foil. The silicone cloth has a long-term temperature resistance of 220 degrees and a short-term temperature resistance of 280 degrees. The copper foil has a long-term temperature resistance of more than 500 degrees, which can improve the high-temperature stability and reliability of the flexible joint.

[0050] The flexible joint 1 is rectangular or circular in shape, which can meet the actual use requirements and improve the matching stability with the pipeline. The thermal insulation layer 15 is made of ceramic fiber cotton. The thermal insulation material is a ceramic fiber blanket with a thickness of not less than 50MM. It can withstand a temperature of 1000 degrees for a long time and has good thermal insulation properties.

[0051] The present invention wraps the outer periphery of the flexible joint with a double-layer pipe sleeve, and an insulating layer is arranged between the double-layer pipe sleeves, so that the outer end of the flexible joint has better high temperature resistance, and can effectively maintain the integrity and stability of the flexible joint structure. According to the different environments in which the inner and outer layers contact, the inner pipe sleeve and the outer pipe sleeve can meet the corresponding use requirements. The inner and outer pipe sleeves are both made of high-temperature resistant cloth through high-temperature lines and sewn with high-temperature resistant inner and outer supporting ribs, so as to maintain the effect of stable support for the flexible joint, ensure that the flexible joint will not be sucked flat under negative pressure, and can replace the catheter with better high-temperature resistance. A flanged sealing layer is provided between the inner and outer pipe sleeves near the root of the flexible joint to facilitate installation with an external flange, and the annular covering belt can play a role of auxiliary sealing.

[0052] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. All equivalent modifications or changes made by those skilled in the art without departing from the spirit and technical ideas disclosed by the present invention shall still be covered by the claims of the present invention.

Claims

1. A fireproof flexible joint, characterized in that: It includes a flexible joint, a double-layer pipe sleeve wrapped around the outer periphery of the flexible joint, and an insulating layer arranged between the double-layer pipe sleeves. The double-layer pipe sleeve includes an inner pipe sleeve and an outer pipe sleeve. The inner pipe sleeve and the outer pipe sleeve are both made of high-temperature resistant cloth and are sewn with high-temperature resistant inner and outer supporting ribs through high-temperature lines to support the flexible joint so that it will not be sucked flat under negative pressure.

2. The fireproof flexible joint according to claim 1, characterized in that: A flanged sealing layer is provided between the inner pipe sleeve and the outer pipe sleeve near the root of the flexible joint, and an annular covering belt is provided between the flanged sealing layer and the flexible joint.

3. The fireproof flexible joint according to claim 1, characterized in that: A horizontal straight tube sealing layer is arranged between the inner tube sleeve and the outer tube sleeve near the root of the flexible joint, and an annular covering belt is arranged between the straight tube sealing layer and the flexible joint.

4. The fireproof flexible joint according to claim 1, characterized in that: The outer pipe sleeve comprises a first outer refractory layer and a skin layer, a second outer refractory layer is arranged between the first outer refractory layer and the skin layer, and the outer supporting ribs are arranged between the first outer refractory layer and the second outer refractory layer.

5. The fireproof flexible joint according to claim 4, characterized in that: The first outer refractory layer and the second outer refractory layer are both made of high silica cloth, carbon fiber cloth, basalt cloth, ceramic fiber cloth or quartz fiber cloth, the skin layer is made of silicone cloth, and the outer support ribs are made of stainless steel or carbon steel.

6. The fireproof flexible joint according to claim 1, characterized in that: The inner pipe sleeve includes a double-layer inner refractory layer, the inner support ribs are arranged between the double-layer inner refractory layers, the outer side of the inner refractory layer is wrapped with a soft joint sealing layer, and the soft joint sealing layer includes a high-temperature resistant metal support layer and an inner soft joint sealing layer.

7. The fireproof flexible joint according to claim 6, characterized in that: The inner supporting ribs are made of stainless steel, and the high temperature resistant metal supporting layer is made of copper foil. The copper foil has soft properties and meets the flexibility requirements of the soft connection. It can maintain sealing while being resistant to high temperatures. The inner soft connection sealing layer is made of silicone cloth.

8. The fireproof flexible joint according to claim 1, characterized in that: The flexible connection is in a rectangular or circular shape.

9. The fireproof flexible joint according to claim 1, characterized in that: The heat insulation layer is made of ceramic fiber cotton.

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