Short-size reducing flange

Abstract

The utility model relates to a short-size variable-diameter flange which comprises a disc-shaped flange plate, the thickness of the flange plate is smaller than or equal to 30 mm, a variable-diameter pipeline hole is formed in the center of the flange plate, and a plurality of threaded through holes and a plurality of threaded blind holes are evenly distributed in the periphery of the variable-diameter pipeline hole. The threaded through hole and the threaded blind hole are concentric with the flange plate. The threaded through hole and the threaded blind hole are formed in the flange plate at the same time, the reducing pipeline hole is formed in the center, and the flange plate can be in flange connection with pipelines with different diameters at the two ends at the same time. Aiming at transformation and short-size field installation, the medium reducing distance is shortened, the field installation efficiency is improved, the medium flow velocity is uniformly transited from small to large, and the hydraulic loss of the medium is reduced, so that the operation energy consumption of the whole equipment of the system is reduced. And meanwhile, the forming efficiency is high, and the weight is light.

Description

Technical Field

[0001] This utility model belongs to the field of flange technology, and in particular relates to a short-diameter reducing flange. Background Technology

[0002] A flange, also called a flange plate or flange, is a flange used in piping systems for piping connections. On equipment, it refers to the inlet and outlet flanges. Flanges are classified as threaded flanges, welded flanges, and clamp flanges. Flanges are always used in pairs. Threaded flanges can be used for low-pressure pipelines, while welded flanges are used for pressures above four kilograms. In engineering, when standard flanges cannot be matched with pipe fittings or pipelines, reducing flanges are used instead.

[0003] Currently, common reducing flanges are usually formed by drawing or extrusion and then welded to welded flanges to connect pipelines. Due to their simple forming process, they are suitable for mass production. These reducing flanges typically have a relatively long axial installation dimension, but they cannot be used directly in some modification or size-constrained situations. They require on-site personnel to process and cut them according to the dimensions, resulting in low modification efficiency. Even if the modification is completed on-site by cutting and welding, a straight-through method is required, which leads to significant diffusion losses during operation and a tendency to form vortices, resulting in low operating efficiency. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a short-diameter reducing flange to improve installation efficiency and reduce water flow diffusion loss.

[0005] The technical solution adopted by this utility model to solve its technical problem is: to provide a short-size reducing flange, including a flange plate, the flange plate being disc-shaped, the thickness of the flange plate being less than or equal to 30mm, the center of the flange plate having a reducing pipe hole, and the outer periphery of the reducing pipe hole having a plurality of threaded through holes and a plurality of threaded blind holes, the threaded through holes and threaded blind holes being concentric with the flange plate.

[0006] Preferably, the threaded blind hole is located on the inner ring of the threaded through hole.

[0007] Preferably, the inner diameter of the variable diameter pipe hole is a concentric variable diameter or an eccentric variable diameter.

[0008] Preferably, the flange is provided on both sides.

[0009] Preferably, the flange flange is provided with a sealing water line.

[0010] The beneficial effects are as follows: This utility model simultaneously provides threaded through holes and threaded blind holes on the flange, and a reducing pipe hole is provided in the center, allowing for flange connections to pipes with different diameters at both ends simultaneously. For retrofitting and short-length on-site installations, it shortens the medium diameter change distance, improving on-site installation efficiency. Simultaneously, the medium flow velocity transitions smoothly from low to high, reducing hydraulic losses and thus reducing the overall energy consumption of the system. It also boasts advantages such as high molding efficiency and light weight. Attached Figure Description

[0011] Figure 1 This is a three-dimensional view of a short-diameter reducing flange.

[0012] Figure 2 This is a cross-sectional view of a short-diameter reducing flange.

[0013] Figure 3 This is a front view of a short-diameter reducing flange.

[0014] Wherein, 1-first side flange flange; 2-first side sealing water line; 3-threaded blind hole; 4-threaded through hole; 5-second side sealing water line; 6-second side flange flange; 7-reducing flange hole.

[0015] The same markings in each diagram represent the same component. Detailed Implementation

[0016] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that after reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0017] like Figure 1 As shown, this utility model provides a short-diameter reducing flange, including a flange plate, the flange plate being disc-shaped, the thickness of the flange plate being less than or equal to 30mm, the center of the flange plate having a reducing pipe hole 7, and the outer periphery of the reducing pipe hole 7 having a plurality of threaded through holes 4 and a plurality of threaded blind holes 3 evenly distributed thereon, the threaded through holes 4 and the threaded blind holes 3 being concentric with the flange plate.

[0018] In a kind of Figure 3 In the specific embodiment shown, the threaded blind hole 3 is located on the inner ring of the threaded through hole 4. The threaded blind hole 3 is bolted to the mating flange on the first side, and the threaded through hole 4 is bolted to the mating flange on the second side.

[0019] The inner diameter of the variable diameter pipe hole 7 is either concentric or eccentric. In one such case... Figure 2In the specific embodiment shown, the reducing pipe hole 7 is an eccentric reducer, with its axis forming an angle with the axis of the flange. The eccentric reducer provides a smooth transition, ensuring that the medium flow velocity does not change abruptly. Both ends of the reducing pipe hole 7 adopt corresponding national standard installation dimensions.

[0020] Both sides of the flange are provided with flanges, and the flanges are provided with sealing water lines, in a manner such as... Figure 2 In the specific embodiment shown, a first side sealing water line 2 is provided on the first side flange 1, and a second side sealing water line 5 is provided on the second side flange 6. The sealing water line is two concentric concave lines, which are machined on the surface of the flange flange by a turning process. When in use, it cooperates with the sealing gasket to ensure the sealing effect.

[0021] This utility model adopts casting and forging methods to improve on-site installation efficiency. The medium flow rate gradually increases smoothly, reducing hydraulic loss of the medium and thus reducing the overall operating energy consumption of the system.

Claims

1. A short-size reducing flange comprising a flange plate, characterized by, The flange plate is disc-shaped, the thickness of the flange plate is less than or equal to 30 mm, the center of the flange plate is provided with a variable-diameter pipeline hole, the outer periphery of the variable-diameter pipeline hole is uniformly provided with a plurality of threaded through holes and a plurality of threaded blind holes, and the threaded through holes and the threaded blind holes are concentric with the flange plate.

2. A short-size reducing flange according to claim 1, wherein The threaded blind holes are arranged in an inner circle of the threaded through holes.

3. A short-size reducing flange according to claim 1, wherein The inner diameter of the variable-diameter pipeline hole is concentrically variable or eccentrically variable.

4. A short-size reducing flange according to claim 1, wherein Both sides of the flange plate are provided with flange flanges.

5. A short-size reducing flange according to claim 4, wherein The flange flanges are provided with sealing water lines.

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