Anti-corrosion flange for marine pipeline

Abstract

The utility model discloses an anti-corrosion flange for a marine pipeline, which relates to the technical field of flanges, and comprises a first flange, a limiting block and a clamping block, a second flange is arranged on one side of the first flange, hole grooves are formed in the surfaces of the first flange and the second flange, bolts are inserted into the hole grooves, and when the first flange and the second flange are connected, the limiting block and the clamping block are clamped in the hole grooves. The nut is embedded in the groove in the surface of the first flange, then the bolt penetrates through the hole grooves in the surfaces of the first flange and the second flange to be in threaded connection with the nut, meanwhile, one end of the bolt is embedded in the hexagonal groove in one end of the limiting block, and then the bolt drives the limiting block to rotate when rotating and screwing. The limiting block can be continuously clamped with the surface of the clamping block while rotating, when the bolt is vibrated, due to one-way clamping of the limiting block and the clamping block, the limiting block cannot rotate reversely, then a hexagonal groove in one end of the limiting block can limit rotation of the bolt, and therefore the bolt can be prevented from rotating.

Description

TECHNICAL FIELD

[0001] The utility model relates to flange technical field, concretely is a kind of anticorrosive flange for ocean pipeline. BACKGROUND

[0002] Ocean pipeline flange is an important component for connecting ocean pipeline, it needs to have high strength, corrosion resistance, good sealing performance and other characteristics to adapt to the complexity of marine environment and the requirement of pipeline conveying medium, by searching, the patent of China patent announcement No. SUMMARY

[0003] In view of the deficiencies of the prior art, the utility model provides an anticorrosive flange for ocean pipeline, solve the problem that the existing flange in background art when bolt is subjected to external vibration for a long time, and then bolt loosening occurs.

[0004] To achieve the above object, the utility model discloses the following technical scheme: an anticorrosive flange for ocean pipeline, including first flange, limit block and clamping block, the first flange side is provided with second flange, the first flange and second flange surface are all provided with hole groove, and hole groove inside is inserted with bolt, the one end of bolt is connected with nut, the nut is embedded in the recess of first flange surface, the second flange surface hole groove end is provided with limit ring, the limit ring and the outer wall of limit block sliding contact, the limit block one end is provided with clamping block, and the clamping block is welded in second flange inside.

[0005] Preferably, the limit block one end end is provided with recess, and the recess shape is consistent with the shape of the one end of bolt, by being provided with the recess of the one end end of limit block consistent with the shape of the one end of bolt, bolt can drive limit block to rotate when rotating and tightening, while when bolt is subjected to vibration, the one-way clamping effect of limit block and clamping block can limit limit block reverse rotation, and then the rotation of bolt is limited by the recess of limit block end, effectively avoid bolt self-rotation due to external vibration, so as to enhance the stability of flange connection, improve the reliability of anticorrosive flange for ocean pipeline in complex marine environment, reduce the risk of pipeline connection failure caused by bolt loosening.

[0006] Preferably, the limiting block is externally provided with an annular groove in sliding contact with the limiting ring, and the annular groove is in sliding contact with the limiting ring. By providing the limiting block with an annular groove in sliding contact with the limiting ring, stable sliding fit between the limiting block and the limiting ring is formed when the limiting block rotates. This structural design not only ensures smooth rotation of the limiting block during tightening of the bolt, but also further limits reverse rotation of the limiting block when the bolt is subjected to external force vibration through the restraining action of the limiting ring on the limiting block, thereby enhancing the anti-loosening effect of the bolt, improving the stability and reliability of the flange connection, better adapting to the vibration and impact of the pipeline in the marine environment, and prolonging the service life of the flange.

[0007] Preferably, the one end of the clamping block is provided with a one-way ratchet on the contact surface with the limiting block. By providing the one end of the clamping block with a one-way ratchet on the contact surface with the limiting block, one-way engagement between the limiting block and the clamping block is achieved. When the bolt is tightened, the limiting block can rotate smoothly, but when the bolt is subjected to external force vibration, the structure of the one-way ratchet will prevent the limiting block from rotating in the opposite direction, thereby effectively limiting the rotation of the bolt. This one-way ratchet design significantly enhances the anti-loosening ability of the flange connection, improves the stability and reliability of the corrosion-resistant flange for marine pipelines in complex marine environments, reduces the risk of pipeline connection failure caused by bolt loosening, and ensures the safe operation of the marine pipeline system.

[0008] Preferably, the second flange is internally provided with a protruding tubular structure, and the tubular structure is inserted into the first flange. The first flange and the second flange are both sprayed with a corrosion-resistant coating. By providing the second flange with a protruding tubular structure and inserting it into the first flange, the contact area and connection strength between the flanges can be increased, further improving the sealing and stability of the flange connection. At the same time, the first flange and the second flange are both sprayed with a corrosion-resistant coating, which can effectively resist the corrosion of salt spray, seawater and other corrosive media in the marine environment, prolong the service life of the flange, reduce maintenance costs, and ensure that the marine pipeline system maintains good performance and reliability during long-term operation.

[0009] The utility model provides a kind of marine pipeline corrosion-resistant flange.It has the following beneficial effects:

[0010] The first flange and the second flange are connected by embedding the nut in the groove on the surface of the first flange, then connecting the bolt with the nut through the hole and groove on the surface of the first flange and the second flange, and embedding the one end of the bolt in the hexagonal groove on the one end of the limiting block. When the bolt is tightened, it drives the limiting block to rotate. The limiting block rotates and continuously engages with the surface of the clamping block. When the bolt is vibrated, the one-way engagement between the limiting block and the clamping block prevents the limiting block from rotating in the opposite direction. The hexagonal groove on the one end of the limiting block limits the rotation of the bolt, so that the bolt can avoid self-rotation.BRIEF DESCRIPTION OF DRAWINGS BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the whole structure schematic diagram of the utility model;

[0012] Figure 2 It is the limiting ring structure schematic diagram of the utility model;

[0013] Figure 3 It is the card block structure schematic diagram of the utility model;

[0014] Figure 4 It is the limiting block structure schematic diagram of the utility model.

[0015] In the drawing, 1, first flange;2, second flange;3, bolt;4, limiting block;5, card block;6, limiting ring. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0017] Embodiment 1:

[0018] Please refer to Figures 1-4 The utility model embodiment provides a kind of technical scheme: a kind of anticorrosive flange for marine pipeline, including first flange 1, limiting block 4 and card block 5, first flange 1 side is provided with second flange 2, the surface of first flange 1 and second flange 2 is all provided with hole groove, and hole groove inside is inserted with bolt 3, the one end of bolt 3 is connected with nut, nut is embedded in the recess of the surface of first flange 1, the end of hole groove of second flange 2 surface is provided with limiting ring 6, limiting ring 6 and the outer wall of limiting block 4 sliding contact, limiting block 4 one end is provided with card block 5, card block 5 and second flange 2 inside are welded, when first flange 1 and second flange 2 are connected, by embedding nut in the recess of the surface of first flange 1, then bolt 3 is inserted through the hole groove of the surface of first flange 1 and second flange 2 and is connected with nut screw thread, while the one end of bolt 3 will be embedded in the hexagonal recess of one end of limiting block 4, then bolt 3 will drive limiting block 4 to rotate when rotating and tightening, limiting block 4 can be constantly engaged with the surface of card block 5 when rotating, when bolt 3 is vibrated, due to the one-way engagement of limiting block 4 and card block 5, limiting block 4 cannot reverse rotation, then the hexagonal recess of one end of limiting block 4 can limit the rotation of bolt 3, so that bolt 3 can avoid self-rotation.

[0019] Embodiment 2:

[0020] Please refer to Figures 1-4 The utility model discloses an anti -corrosion flange for marine pipeline, the recess is set up to the one end end of spacing block 4, and the recess shape is in accord with the shape of one end of bolt 3, the annular recess is set up to the outside of spacing block 4, and the annular recess is in sliding contact with spacing ring 6, the one end of clamping block 5 and the contact surface of spacing block 4 are all set up one -way ratchet tooth, the protruding tubular structure is set up in the second flange 2, and the tubular structure is inserted to the inside of first flange 1, and the surface of first flange 1 and second flange 2 is all sprayed with anticorrosive coating, through setting up the protruding tubular structure in the second flange 2, and making it insert to the inside of first flange 1, can increase the contact area and the connecting strength between flanges, further improve the sealing property and stability of flange connection, simultaneously, the surface of first flange 1 and second flange 2 is all sprayed with anticorrosive coating, this coating can effectively resist the corrosion of salt fog, seawater and other corrosive medium in marine environment, prolongs the service life of flange, reduces maintenance cost, ensures that marine pipeline system maintains good performance and reliability in the long-term operation process.

[0021] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model, and for those skilled in the art, obviously, the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the utility model is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any figure reference in the claims should not be regarded as limiting the claims involved.

[0022] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be properly combined to form other embodiments that those skilled in the art can understand.

Claims

1. A corrosion protection flange for marine pipelines, characterized by: Including first flange (1), limit piece (4) and clamping block (5), one side of first flange (1) is provided with second flange (2), the surface of first flange (1) and second flange (2) is provided with hole groove, and the inside of hole groove is inserted with bolt (3), one end of bolt (3) is connected with nut, the nut is embedded in the recess of the surface of first flange (1), the end of hole groove of the surface of second flange (2) is provided with limit ring (6), limit ring (6) and the outer wall of limit piece (4) are in sliding contact, one end of limit piece (4) is provided with clamping block (5), clamping block (5) is welded with the inside of second flange (2).

2. An anti-corrosion flange for marine pipelines according to claim 1, characterized in that: The end of limit piece (4) is provided with a recess, and the shape of the recess is consistent with the shape of one end of bolt (3).

3. A corrosion resistant flange for marine pipelines according to claim 2, characterized in that: The outside of limit piece (4) is provided with an annular recess, and the annular recess is in sliding contact with limit ring (6).

4. A corrosion resistant flange for marine pipelines according to claim 3, characterized in that: The contact surface of one end of clamping block (5) and limit piece (4) is provided with one-way ratchet.

5. A corrosion resistant flange for marine pipelines according to claim 4, characterized in that: The inside of second flange (2) is provided with a convex tubular structure, and the tubular structure is inserted into the inside of first flange (1), and the surface of first flange (1) and second flange (2) is sprayed with an anticorrosion coating.

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