Splicing type large-scale round-top square-bottom pipe

Abstract

The utility model discloses a splicing type large-scale round-top square-bottom pipe, and relates to the technical field of pipelines. Comprising a round-top and square-bottom pipe, a fan and a metal silencing pipe, the round-top and square-bottom pipe comprises a round flange, a square perforated panel, a splice plate, a flanging mounting plate, a rubber cushion plate, an access hole cover plate, an inner nut, a bolt and inner angle strip-shaped steel, and the round flange is fixedly installed on the surface of the square perforated panel in a penetrating mode; flanging mounting plates are arranged on the outer edge parts of the square perforated panels and the splicing plates, and every two adjacent flanging mounting plates are detachably fixed through bolts; splicing type installation is adopted, transportation and installation of a large smoke prevention and exhaust fan system in a limited space are facilitated, bolt fixing is adopted, installation operation is convenient, construction efficiency can be improved, cost is reduced, splicing type installation is used for replacing a welding technology, welding environment pollution can be effectively reduced, and potential safety hazards of fire operation are reduced. Meanwhile, occupational health and safety are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a spliced ​​large-scale round-square-square pipe. Background Art

[0002] The round-square pipe is also called the square-round reducer. The lower and upper parts of the pipe are round and square in shape. It is generally suitable for components with special structures, such as the connection between round ventilation ducts and fan outlets, air-conditioning units and fan inlets, etc.

[0003] The application overview of the Tianyuanfangfang is generally based on the construction drawings. The Tianyuanfangfang is used before and after the tunnel fan and the heat exhaust fan. The plate is made of 3.0mm cold-rolled steel plate. After the fan is installed and the position is determined, the center elevation of the Tianyuanfangfang and the vertical and horizontal coordinates are determined according to the center position of the fan. After measuring its specifications and dimensions, it is processed and manufactured.

[0004] Traditional round and square spherical structures are mostly manufactured and installed through on-site measurement, cutting, assembly, and on-site welding. This processing and manufacturing method has the disadvantages of high error rate, serious deformation, great environmental pollution, and difficulty in transportation and installation.

[0005] Traditional round-square welding requires a high level of welding technology. The weld is prone to deformation, the alignment error between the round flange and the fan center is large, and there are safety hazards such as working in limited spaces and using open flames during the welding process. Utility Model Content

[0006] The purpose of the utility model is to provide a spliced ​​large-scale round and square pipe to solve the above-mentioned technical problems.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a spliced ​​large round square pipe, including a round square pipe, a fan and a metal silencer pipe, the round square pipe includes a circular flange, a square opening panel, a splicing plate, a flanged mounting plate, a rubber pad, an inspection port cover, an inner nut, a bolt and an inner angle bar steel, the circular flange is penetrated and fixedly installed on the surface of the square opening panel, the square opening panel and the outer edge of the splicing plate are both provided with a flanged mounting plate, and two adjacent flanged mounting plates are removably fixed by bolts.

[0008] Preferably, a rubber pad is fitted between every two adjacent flange mounting plates.

[0009] Preferably, an inspection port cover is provided on the surface of one of the splicing plates, an inner nut is provided on the surface of the inspection port cover, and the inspection port cover is detachably fixed to the splicing plate via the inner nut.

[0010] Preferably, an inner angle bar steel is provided inside the round square tube, and the inner angle bar steel is fixedly connected to the splicing plate by bolts.

[0011] Preferably, both ends of the fan are provided with round square pipes, the air outlet and the air inlet of the fan are fixedly connected to the circular flange, and the ends of the two round square pipes away from the fan are fixedly connected to the metal silencer pipe.

[0012] Compared with the related art, the spliced ​​large round square pipe provided by the utility model has the following beneficial effects:

[0013] The utility model provides a spliced ​​large round square pipe. The square opening panel is laid flat on the ground, and the splicing plates are installed in sequence along the four sides according to the installation manual. Then, rubber pads are arranged between adjacent flanged installation plates to improve the sealing of the round square pipe. Then, the square opening panel and the splicing plate are fixed with bolts at the bolt hole spacing prefabricated on the flanged installation plate. When the four sides of the square opening panel are spliced ​​with splicing plates, the second layer of splicing plates is installed, and then the assembled round square pipe is vertically flipped to install the inspection port cover plate. The inspection port cover plate is fixed with bolts and inner nuts to facilitate later maintenance. Finally, the round square pipe is installed and formed. The splicing installation is adopted, which is conducive to the transportation and installation of large smoke exhaust fan systems in limited spaces. All bolts are used for fixing, and the installation operation is convenient, which is conducive to improving construction efficiency and reducing costs. The splicing installation is used to replace the welding process, which can effectively reduce welding environmental pollution, reduce the safety hazards of hot work, and improve occupational health and safety.

[0014] The utility model provides a spliced ​​large round square pipe, which makes the interior of the round square pipe more stable through the support of the inner angle bar steel, and effectively improves the service life of the round square pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the round-sky square tube structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the fan structure of the utility model.

[0017] In the figure: 1. round square pipe, 11. round flange, 12. square opening panel, 13. splicing plate, 14. flanged mounting plate, 15. rubber pad, 16. inspection port cover, 17. inner nut, 18. bolt, 19. inner angle bar steel, 2. fan, 3. metal silencer. DETAILED DESCRIPTION

[0018] See also Figure 1-Figure 2The utility model provides a technical solution, including a round square pipe 1, a fan 2 and a metal muffler 3. The round square pipe 1 includes a round flange 11, a square opening panel 12, a splicing plate 13, a flanged mounting plate 14, a rubber pad 15, an inspection port cover 16, an inner nut 17, a bolt 18 and an inner angle bar steel 19. The round flange 11 penetrates and is fixedly installed on the surface of the square opening panel 12. The outer edges of the square opening panel 12 and the splicing plate 13 are both provided with flanged mounting plates 14. Two adjacent flanged mounting plates 14 It is removably fixed by bolts 18; a rubber pad 15 is fitted between every two adjacent flanged mounting plates 14; an inspection port cover 16 is provided on the surface of one of the splicing plates 13, and an inner nut 17 is provided on the surface of the inspection port cover 16, and the inspection port cover 16 is removably fixed to the splicing plate 13 through the inner nut 17; both ends of the fan 2 are provided with a round square pipe 1, and the air outlet and air inlet of the fan 2 are fixedly connected to the circular flange 11, and the ends of the two round square pipes 1 away from the fan 2 are fixedly connected to the metal muffler 3;

[0019] First, lay the square opening panel 12 flat on the ground, install the splicing plates 13 along the four sides in sequence according to the installation manual, and then set the rubber pads 15 between the adjacent flanged mounting plates 14 to improve the sealing of the round square pipe 1. Then, use the bolts 18 to fix the square opening panel 12 and the splicing plates 13 at the prefabricated bolt hole spacing of the flanged mounting plate 14. When the four sides of the square opening panel 12 are spliced ​​with splicing plates 13, install the second layer of splicing plates 13, and then flip the assembled round square pipe 1 vertically. Install the inspection port cover 16 and use bolts 18 and inner nuts 17 to fix the inspection port cover 16 for easy maintenance later. Finally, the round square pipe 1 is installed and formed. The splicing installation is beneficial to the transportation and installation of large smoke exhaust fan systems in limited spaces. All are fixed with bolts 18, which is easy to install and operate, and is beneficial to improving construction efficiency and reducing costs. The splicing installation is used instead of welding technology, which can effectively reduce welding environmental pollution, reduce safety hazards of hot work, and improve occupational health and safety.

[0020] An inner angle bar steel 19 is arranged inside the round square pipe 1, and the inner angle bar steel 19 is fixedly connected to the splicing plate 13 by bolts 18;

[0021] The interior of the round square pipe 1 is made more stable through the support of the inner angle bar steel 19, and the service life of the round square pipe 1 is effectively improved.

Claims

1. A spliced ​​large-scale round-square pipe, comprising a round-square pipe (1), a fan (2) and a metal muffler (3), characterized in that: The round square pipe (1) comprises a circular flange (11), a square opening panel (12), a splicing plate (13), a flanged mounting plate (14), a rubber pad (15), an inspection port cover (16), an inner nut (17), a bolt (18) and an inner angle bar steel (19); the circular flange (11) penetrates and is fixedly mounted on the surface of the square opening panel (12); the outer edges of the square opening panel (12) and the splicing plate (13) are both provided with flanged mounting plates (14); two adjacent flanged mounting plates (14) are detachably fixed by bolts (18).

2. A spliced ​​large round-square tube according to claim 1, characterized in that: A rubber pad (15) is disposed between every two adjacent flanged mounting plates (14).

3. A spliced ​​large round-square tube according to claim 2, characterized in that: An inspection port cover plate (16) is provided on the surface of one of the splicing plates (13), and an inner nut (17) is provided on the surface of the inspection port cover plate (16). The inspection port cover plate (16) is detachably fixed to the splicing plate (13) via the inner nut (17).

4. A spliced ​​large round-square pipe according to claim 3, characterized in that: An inner angle bar steel (19) is arranged inside the round square tube (1), and the inner angle bar steel (19) is fixedly connected to the splicing plate (13) by bolts (18).

5. A spliced ​​large round-square tube according to claim 4, characterized in that: Both ends of the fan (2) are provided with a round square pipe (1), the air outlet and the air inlet of the fan (2) are fixedly connected to the circular flange (11), and the ends of the two round square pipes (1) away from the fan (2) are fixedly connected to the metal silencer (3).

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