Split half split loose flange

Abstract

This utility model relates to a separable semi-split loose flange, comprising a pipeline, an upper flange, a lower flange, studs, and nuts. The upper and lower flanges are two independent half-flanges formed by vertically and partially horizontally splitting the original integral flange along its centerline. The upper and lower flanges are fastened together with studs and nuts to form a complete flange structure. This utility model, through the design of the separable semi-split loose flange, allows the original loose flange to be disassembled while maintaining its functionality. This enables the flange to be easily removed from the pipeline without damaging the pipeline structure, and also reduces the application outer diameter of the original loose flange structure, allowing the loose flange component to be used in a smaller structural space, thus reducing the size and space required for its mating components.

Description

Technical Field

[0001] This utility model relates to flange connection structures in the field of marine turbine auxiliary machinery, and in particular to a detachable semi-split loose flange, which is suitable for pipeline systems that require frequent disassembly or are in a space-constrained environment. Background Technology

[0002] In conventional loose-fitting flange structures, the flange is fitted onto a steel or copper ring. The flange can only move unilaterally along the pipeline axis. If there are steel rings or connecting flanges at both ends of the pipeline, the original loose-fitting flange cannot be removed. If the loose-fitting flange structure needs to pass through a hole, the diameter of that hole needs to be larger than the outer diameter of the flange, increasing the size and space required for the mating components.

[0003] In the prior art, CN201897025U discloses a split flange, which is spliced ​​together by two semi-circular flanges and fixed with hexagonal bolts. However, its extended boss on the split surface occupies a large space and does not solve the local strength problem at the flange hole. CN219242287U provides a short-distance interface flange, which adopts a split structure to shorten the installation distance, but does not address the vertical splitting and disassembly design of the flange. Traditional loose flanges cannot be removed when there are obstacles at both ends of the pipeline, and the installation space requirements are high. This utility model achieves the disassembly of the flange while ensuring strength through a vertical and partially transverse half-split design. Summary of the Invention

[0004] This utility model proposes a novel separable semi-split loose flange. By reasonably splitting and combining the original loose flange, the original loose flange can be disassembled and removed without changing its structure and strength, and the whole component can also be made in a smaller space.

[0005] To achieve the above objectives, the technical solution of this utility model is: a separable half-split loose flange, including a pipeline, an upper flange, a lower flange, studs and nuts, wherein the upper flange and the lower flange are two independent half flanges formed by vertical and partial transverse splitting along the center line of the original integral flange; the upper flange and the lower flange are fastened together by studs and nuts to form a complete flange structure.

[0006] Furthermore, the vertical and partial transverse half-sections of the upper and lower flanges are located at the flange holes and are divided along the thickness direction.

[0007] Furthermore, the partial transverse half-section of the upper and lower flanges has a separation depth of 1 / 2 of the flange thickness, and the separation surface has a stepped structure.

[0008] Furthermore, the stud is a double-ended stud with opposite thread directions at both ends, and the nut is a self-locking nut.

[0009] Furthermore, the upper and lower flanges are made of stainless steel and coated with an anti-corrosion coating.

[0010] The beneficial effects of this utility model are:

[0011] This utility model provides a separable, semi-split loose flange, which solves the existing technical problems through the following solution:

[0012] 1. Vertical half-section design: The flange is vertically divided into upper and lower halves along the centerline for easy disassembly;

[0013] 2. Partial transverse half-section: Half-section along the thickness direction at the flange hole, preserving the overall structural strength;

[0014] 3. Modular assembly: Quick fastening with studs and nuts, adapting to installation needs in confined spaces.

[0015] This utility model, through the design of a separable semi-split loose flange, allows the original loose flange to be disassembled while ensuring that its function remains unchanged. This enables the flange to be easily removed from the pipeline without damaging the pipeline structure. It also reduces the application outer diameter of the original loose flange structure, allowing the loose flange component to be used in a smaller structural space and reducing the size and space of its mating components. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the detachable semi-split loose flange of this utility model in use;

[0017] Figure 2 This is a schematic diagram of the detachable semi-split loose flange structure of this utility model;

[0018] Figure 3 This is an exploded view of the separable semi-split loose flange structure of this utility model;

[0019] In the diagram: 1. Pipeline, 2. Upper flange, 3. Lower flange, 4. Stud, 5. Nut. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1 to 3 As shown, the separable half-split loose flange of this utility model mainly comprises 5 parts: pipeline 1, upper flange 2, lower flange 3, stud 4, and nut 5.

[0022] The upper flange 2 and the lower flange 3 are stacked to form a single flange. The position and size of the bolt holes remain unchanged. After the studs 4 pass through the bolt holes, they are tightened with nuts 5. The overall shape, structure and function of the flange can remain unchanged.

[0023] The upper flange 2 and the lower flange 3 are made by vertically and partially laterally splitting the original flange along the center line. The partial laterally splitting is done by splitting the original flange along the thickness direction at the position of one flange hole on each side, so that the original flange becomes two independent half flanges.

[0024] Example 1:

[0025] like Figures 1 to 3 As shown, the upper flange 2 and the lower flange 3 are two independent half-flanges formed by vertical and partial transverse half-sections along the centerline of the original integral flange. The depth of the partial transverse half-section at the flange hole is 1 / 2 the thickness, and the split surface is stepped. During assembly, the upper flange 2 and the lower flange 3 are aligned by the concave-convex positioning fit of the stepped split surface, and the stud 4 is tightened with the nut 5 after passing through the flange hole. This design allows the flange to be disassembled when there are obstacles at both ends of the pipeline, and the stepped split surface enhances the shear resistance.

[0026] Example 2:

[0027] Stud 4 is a double-ended stud, and nut 5 is a self-locking nut. The threads at both ends of stud 4 turn in opposite directions, and the self-locking nut prevents loosening after pre-tightening. The flange is made of stainless steel and coated with an anti-corrosion coating. This embodiment is suitable for highly corrosive marine environments, and the self-locking structure improves reliability.

Claims

1. A slit-type semi-split loose flange, characterized in that: It includes a pipeline, an upper flange, a lower flange, studs, and nuts. The upper and lower flanges are two independent half flanges formed by vertical and partial transverse half-sections along the centerline of the original integral flange. The upper and lower flanges are fastened together with studs and nuts to form a complete flange structure.

2. The separable semi-split loose flange according to claim 1, characterized in that: The vertical and partial transverse half-sections of the upper and lower flanges are located at the flange holes and are divided along the thickness direction.

3. The separable semi-split loose flange according to claim 1, characterized in that: The partial transverse half-section of the upper and lower flanges has a separation depth of 1 / 2 of the flange thickness, and the separation surface has a stepped structure.

4. The separable semi-split loose flange according to claim 1, characterized in that: The stud is a double-ended stud with opposite threads at both ends, and the nut is a self-locking nut.

5. The separable semi-split loose flange according to claim 1, characterized in that: The upper and lower flanges are made of stainless steel and coated with an anti-corrosion coating.

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