Rotatable flange connecting structure

Abstract

The utility model discloses a rotatable flange connecting structure which comprises a flange plate, bolt holes, a backing ring and a back cylinder, the bolt holes are evenly formed in the flange plate, the backing ring is arranged at the front end of the flange plate, the back cylinder is arranged on the back of the flange plate, and the flange plate, the backing ring and the back cylinder are integrally formed. The flange plate and the back cylinder are provided with a through groove, a loop groove, an outer sealing ring, an inner sealing layer, a plurality of first positioning grooves, a first loop ring, a first loop sleeve, a plurality of second positioning grooves, a second loop ring, a second loop sleeve, an outer sealing ring, an inner sealing ring, a plurality of fixing assemblies, an outer sealing layer, a sealing groove, an inner sealing ring and a plurality of positioning protrusions. According to the scheme, the flange connecting efficiency and the overall sealing efficiency are greatly improved.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, specifically a rotatable flange connection structure. Background Technology

[0002] A rotatable flange (loose flange) is a pipe fitting consisting of a freely rotating flange and a slip ring welded to the pipe end. Its core function is to allow the flange to rotate independently, facilitating adjustment of bolt hole positions during installation and solving pipe alignment problems. It is particularly suitable for applications with limited space or requiring frequent disassembly (such as shipbuilding and chemical pipelines), achieving quick alignment by rotating the flange without rotating the pipe itself, while maintaining a tight seal to prevent leaks.

[0003] Existing slip-on flanges rely on bolts to tighten the slip-on ring to achieve a seal, but the interface between the rotating parts and the sealing surface is prone to fretting wear, which can lead to media leakage, especially under high temperature / high pressure conditions. Moreover, the structure between the moving flange and the slip-on ring makes it easy for external vibrations (such as those from ship engines or fluid pulsations) to be transmitted to the sealing surface, accelerating bolt loosening.

[0004] Therefore, a solution is needed. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a rotatable flange connection structure to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A rotatable flange connection structure, characterized in that it includes a flange, bolt holes, gaskets, and a back sleeve, wherein the bolt holes are evenly arranged on the flange, the gaskets are arranged at the front end of the flange, and the back sleeves are arranged at the back of the flange, and the flange, gaskets, and back sleeves are integrally formed.

[0010] The flange and back sleeve are provided with a through groove, a slip-on groove, an outer sealing ring, an inner sealing layer, several positioning grooves, a slip-on ring, a slip-on sleeve, several positioning grooves, slip-on rings, slip-on sleeves, an outer sealing ring, an inner sealing ring, several fixing components, an outer sealing layer, a sealing groove, an inner sealing ring, and several positioning protrusions. The through groove runs through the interior of the back sleeve and the interior of the flange. The slip-on groove is located at the front end of the interior of the flange. The outer sealing ring is located on the outer half of the slip-on groove. The inner sealing layer is located on the inner periphery of the outer sealing ring. Several positioning grooves are evenly distributed on the inner sealing layer. The inner circumference includes the following: the first movable sleeve is located on the back of the first movable ring; several second positioning grooves are evenly located at the front end of the first movable ring; the second movable sleeve is located on the back of the second movable ring; the inner sealing ring and the outer sealing ring are arranged in an inner-outer structure and located at the front end of the second movable ring; several fixing components are evenly located at the front end of the second movable ring; the outer sealing layer is located on the outer half-circle of the back of the first and second movable rings; the sealing groove is located in the inner circumference of the outer sealing layer; the inner sealing ring is located inside the sealing groove; and several positioning protrusions are evenly located in the inner circumference of the inner sealing ring.

[0011] Preferably, the loose slot is located on the periphery of the through slot, and the positioning slot is hemispherical and corresponds one-to-one with the orientation of each bolt hole.

[0012] Preferably, the second positioning groove has an arc-shaped structure, and several fixing components are simultaneously located between the outer sealing ring and the inner sealing ring. The position of the outer sealing layer corresponds to the position of the outer sealing ring, and the position of the inner sealing ring corresponds to the position of the inner sealing layer. The positioning protrusion has a hemispherical structure and corresponds to the position of each of the first positioning grooves. The outer peripheries of the first and second loose rings are embedded in the outer periphery of the loose groove.

[0013] Preferably, the fixing component includes a fixing block, a limiting groove, an anti-slip pad, and a positioning extension pad. The fixing block has an arc-shaped structure. The limiting groove is disposed at both ends of the fixing block. The anti-slip pad is wrapped around the fixing block. The positioning extension pad is disposed inside each of the limiting grooves. The extension pad and the anti-slip pad are integrally formed. The fixing block and the loose ring are integrally formed.

[0014] (III) Beneficial Effects

[0015] This utility model provides a rotatable flange connection structure. It has the following advantages:

[0016] 1. This solution involves fitting the flange onto the looper so that the looper ring fits snugly into the looper groove. The outer sealing ring presses against the outer sealing layer, and the inner sealing ring presses against the inner sealing layer. The positioning protrusion is embedded in the positioning groove to achieve the anti-leakage function. At the same time, it can also prevent the medium leakage caused by fretting wear at the interface between the rotating parts and the sealing surface.

[0017] 2. At the same time, each fixing block and anti-slip pad are embedded inside each positioning groove 2. The anti-slip pad plays a certain buffering role, further preventing the bolts from loosening due to external vibration at the junction of the rotating parts and the sealing surface, which greatly improves the flange connection efficiency and sealing efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front and back structure of the flange of this utility model;

[0019] Figure 2 This is a schematic diagram of the two loose ring structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall structure of the back of the loop of this utility model;

[0021] Figure 4 This is a detailed structural diagram of the back of the loop of this utility model;

[0022] Figure 5 This is a detailed structural diagram of the fixing component of this utility model.

[0023] In the diagram: 1-Flange; 2-Bolt hole; 3-Washer ring; 4-Back sleeve; 5-Through groove; 6-Loose sleeve groove; 7-Outer sealing ring; 8-Inner sealing layer; 9-Several positioning grooves; 10-Loose ring one; 11-Loose sleeve one; 12-Several positioning grooves two; 13-Loose ring two; 14-Loose sleeve two; 15-Outer sealing ring; 16-Inner sealing ring; 17-Several fixing components; 18-Outer sealing layer; 19-Sealing groove; 20-Inner sealing ring; 21-Several positioning protrusions; 22-Fixing block; 23-Limiting groove; 24-Anti-slip pad; 25-Positioning extension pad. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example 1:

[0026] Please see Figure 1-5The present invention provides a technical solution to achieve this: including a flange 1, bolt holes 2, gaskets 3 and back sleeves 4, the bolt holes 2 are evenly arranged on the flange 1, the gaskets 3 are arranged at the front end of the flange 1, and the back sleeves 4 are arranged at the back of the flange 1, the flange 1, the gaskets 3 and the back sleeves 4 are integrally formed.

[0027] The core components of the flange 1 and back sleeve 4 include a through groove 5, a looper groove 6, an outer sealing ring 7, an inner sealing layer 8, several positioning grooves 9, a looper ring 10, a looper sleeve 11, several positioning grooves 12, a looper ring 13, a looper sleeve 14, an outer sealing ring 15, an inner sealing ring 16, several fixing components 17, an outer sealing layer 18, a sealing groove 19, an inner sealing ring 20, and several positioning protrusions 21. The through groove 5 extends through the interior of the back sleeve 4 and the flange 1. The looper groove 6 is located at the front end of the interior of the flange 1. The outer sealing ring 7 is located on the outer half of the looper groove 6. The inner sealing layer 8 is located on the inner perimeter of the outer sealing ring 7. The positioning grooves 9 and 10 are also provided. 9 are evenly located within the inner circumference of the inner sealing layer 8, the first sleeve 11 is located on the back of the first sleeve ring 10, several positioning grooves 12 are evenly located at the front end of the first sleeve ring 10, the second sleeve 14 is located on the back of the second sleeve ring 13, the inner sealing ring 16 and the outer sealing ring 15 are located at the front end of the second sleeve ring 13 with an inner and outer structure, several fixing components 17 are evenly located at the front end of the second sleeve ring 13, the outer sealing layer 18 is located on the outer half circle of the back of the first sleeve ring 10 and the second sleeve ring 13, the sealing groove 19 is located within the inner circumference of the outer sealing layer 18, the inner sealing ring 20 is located inside the sealing groove 19, and several positioning protrusions 21 are evenly located within the inner circumference of the inner sealing ring 20.

[0028] The loose groove 6 is located around the through groove 5. The positioning groove 19 is hemispherical and corresponds to the orientation of each bolt hole 2. The positioning groove 212 is arc-shaped. Several fixing components 17 are located between the outer sealing ring 15 and the inner sealing ring 16. The position of the outer sealing layer 18 corresponds to the position of the outer sealing ring 7, and the position of the inner sealing ring 20 corresponds to the position of the inner sealing layer 8. The positioning protrusion 21 is hemispherical and corresponds to the position of each positioning groove 19. The outer peripheries of the loose ring 10 and the loose ring 23 are embedded in the outer periphery of the loose groove 6.

[0029] Analysis of the above content: Flange 1 is fitted onto the slip sleeve so that each slip ring fits tightly into the slip groove 6. The outer sealing ring 7 presses against the outer sealing layer 18 and the inner sealing ring 20 presses against the inner sealing layer 8. The positioning protrusion 21 is embedded into the positioning groove 9 to achieve the anti-leakage function. The thickness of slip ring 10 and slip ring 23 is equal to the sum of the thickness of slip groove 6 and the thickness of gasket 3. At the same time, it can also prevent the medium leakage caused by fretting wear at the junction of rotating parts and sealing surface.

[0030] Example 2:

[0031] Please see Figure 1-5 The present invention provides a technical solution to achieve this: the fixing component 17 includes a fixing block 22, a limiting groove 23, an anti-slip pad 24 and a positioning extension pad 25. The fixing block 22 has an arc-shaped structure. The limiting groove 23 is provided at the left and right ends of the fixing block 22. The anti-slip pad 24 is wrapped around the fixing block 22. The positioning extension pad 25 is provided inside each limiting groove 23. The extension pad 25 and the anti-slip pad 24 are integrally formed. The fixing block 22 and the loose ring 13 are integrally formed.

[0032] Analysis of the above: Each fixing block 22 and anti-slip pad 24 is embedded inside each positioning groove 12. The anti-slip pad 24 also provides a certain buffering effect, further preventing bolt loosening caused by external vibration at the interface between the rotating parts and the sealing surface under multi-layer sealing and limiting, thus significantly improving the flange connection efficiency and sealing efficiency. After each slip ring and slip sleeve are installed opposite to each other, the two flanges 1 are fixed and tightened through the bolt holes 2 to complete the installation.

[0033] The present invention comprises: 1-flange; 2-bolt hole; 3-washer; 4-back sleeve; 5-through groove; 6-slip sleeve groove; 7-outer sealing ring; 8-inner sealing layer; 9-several positioning grooves; 10-slip sleeve; 11-slip sleeve; 12-several positioning grooves; 13-slip sleeve; 14-slip sleeve; 15-outer sealing ring; 16-inner sealing ring; 17-several fixing components; 18-outer sealing layer; 19-sealing groove; 20-inner sealing ring; 21-several positioning protrusions; 22-fixing block; 23-limiting groove; 24-anti-slip pad; 25-... - Positioning extension pads, these components are all general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. The problem solved by this utility model is that existing slip-on flanges rely on bolts to tighten the slip ring to achieve sealing, but the interface between the rotating parts and the sealing surface is prone to medium leakage due to fretting wear, especially under high temperature / high pressure conditions; moreover, the structure between the movable flange and the slip ring makes it easy for external vibrations (such as ship engines, fluid pulsation) to be transmitted to the sealing surface, accelerating bolt loosening. This utility model significantly improves the flange connection efficiency and overall sealing efficiency.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A rotatable flange connection structure, characterized by: It includes a flange (1), bolt holes (2), gaskets (3) and back sleeve (4). The bolt holes (2) are evenly arranged on the flange (1), the gaskets (3) are arranged at the front end of the flange (1), and the back sleeve (4) is arranged at the back of the flange (1). The flange (1), gaskets (3) and back sleeve (4) are integrally formed. The flange (1) and back sleeve (4) are provided with a through groove (5), a looper groove (6), an outer sealing ring (7), an inner sealing layer (8), several positioning grooves (9), a looper ring (10), a looper sleeve (11), several positioning grooves (12), a looper ring (13), a looper sleeve (14), an outer sealing ring (15), an inner sealing ring (16), several fixing components (17), an outer sealing layer (18), a sealing groove (19), an inner sealing ring (20), and several positioning protrusions (21). The through groove (5) runs through the interior of the back sleeve (4) and the flange (1). The looper groove (6) is located at the front end of the interior of the flange (1). The outer sealing ring (7) is located on the outer half of the looper groove (6). The inner sealing layer (8) is located on the inner periphery of the outer sealing ring (7). Several positioning grooves (9) are evenly positioned. Within the inner circumference of the inner sealing layer (8), the first sleeve (11) is located on the back of the first sleeve ring (10), several positioning grooves (12) are evenly located at the front end of the first sleeve ring (10), the second sleeve (14) is located on the back of the second sleeve ring (13), the inner sealing ring (16) and the outer sealing ring (15) are located at the front end of the second sleeve ring (13) with an inner-outer structure, several fixing components (17) are evenly located at the front end of the second sleeve ring (13), the outer sealing layer (18) is located on the outer half-circle of the back of the first sleeve ring (10) and the second sleeve ring (13), the sealing groove (19) is located within the inner circumference of the outer sealing layer (18), the inner sealing ring (20) is located inside the sealing groove (19), and several positioning protrusions (21) are evenly located within the inner circumference of the inner sealing ring (20).

2. A rotatable flange connection structure according to claim 1, characterized in that: The loose slot (6) is located on the periphery of the through slot (5), and the positioning slot (9) has a hemispherical structure and corresponds one-to-one with the orientation of each bolt hole (2).

3. A rotatable flange connection structure according to claim 2, wherein: The second positioning groove (12) has an arc-shaped structure. Several fixing components (17) are located between the outer sealing ring (15) and the inner sealing ring (16). The position of the outer sealing layer (18) corresponds to the position of the outer sealing ring (7). The position of the inner sealing ring (20) corresponds to the position of the inner sealing layer (8). The positioning protrusion (21) has a hemispherical structure and corresponds to the position of each of the first positioning grooves (9). The outer periphery of the first loose ring (10) and the second loose ring (13) is embedded in the outer periphery of the loose groove (6).

4. A rotatable flange coupling structure according to claim 3, wherein: The fixing component (17) includes a fixing block (22), a limiting groove (23), an anti-slip pad (24), and a positioning extension pad (25). The fixing block (22) has an arc-shaped structure. The limiting groove (23) is located at the left and right ends of the fixing block (22). The anti-slip pad (24) is wrapped around the fixing block (22). The positioning extension pad (25) is located inside each limiting groove (23). The extension pad (25) and the anti-slip pad (24) are integrally formed. The fixing block (22) and the second loose ring (13) are integrally formed.

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