Fiber fabric supported mean-speed air pipe system

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] like figure 1 As shown, a supported uniform velocity duct system with different pipe diameters and tension rings along the way is suspended by steel ropes, and the tension ring at the end of the duct is stretched on the end bracket by steel ropes. The branch system consists of air duct inlet 1, air duct end 5, air duct unit 3, and tension ring 4. The inner wall of the air duct unit 3 is compounded with interlayers in the circumferential direction, and a number of closed rings 4 for support are butted and inserted in the interlayers. The closed rings are polyester fiber rod rings inserted through plastic joints at the joints. Multiple closed rings are set at intervals of 1 to 2 meters. Polyester fiber rods are made of flame-retardant lightweight materials (density less than 100g/m), and different pipe diameters correspond to different specifications (about 3mm-8mm). The tension is (0.5N-10N). The air duct unit 3 is a tapered air duct, and the air duct from the inlet to the end has successively decreasing pipe diameters along the way. The diameter of the air duct can be designed as a uniform decreasing diameter, and can also be designed as a non-uniform decreasing diameter according to the needs, making it a fiber fabric supporting uniform velocity air duct with a specific taper or variable taper. When the diameter of the air duct is uniformly decreasing, the air duct unit is a conical air duct, and the cone angle θ ranges from 0

[0026] The air duct unit of the air duct system is a fiber fabric air duct unit, or a composite fiber fabric air duct unit. The composite fiber fabric air duct unit includes an aluminum foil layer, an insulation layer and a fiber fabric layer from the inside to the outside; the aluminum foil layer, The insulation layer and the fiber fabric layer are bonded and compounded by flame-retardant glue; zippers are sewn at both ends of the air duct unit; the insulation layer is a flexible insulation layer, and the insulation layer is made of polyethylene foam material.

[0027] When the air duct layout is required, the air duct system includes an air duct unit, an air duct elbow or an air duct tee or an air duct variable diameter and an air duct end for connecting the air duct unit; Zipper, the air duct units are connected by zippers; the air duct tee or air duct elbow or air duct variable diameter is connected to the inner side of the butt ends of two adjacent air duct units to be connected.

[0028] like figure 1 As shown, the air duct suspension hook is sewn on the surface of the air duct unit of the air duct system, and the suspension hooks are evenly distributed in rows along the axial direction of the air duct unit; there is a stretching hook outside the tension ring at the end position of the air duct; The ring is connected to the quick tensioner 6 through the stretching hook, and the quick tensioner is fixed on the side bracket 8 by the eyebolt 7 . All fiber fabric air ducts are tightened by the tension adjustment of the quick tensioner; when there is no ventilation, the air ducts maintain their shape by the circumferential tension of the closed ring and the tensile force at both ends of the air ducts, and the moment of ventilation, a momentary Static pressure, but because the surface of the air duct itself has a certain tension, it will not produce noise and vibration, thus achieving the effect of noise reduction and vibration reduction.

[0029] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should belong to the protection scope of the appended claims of the present invention.