Shockproof sealing flange for ship

Abstract

The invention relates to the technical field of flanges, in particular to a marine shockproof sealing flange which comprises flange plates, the flange plates are fixedly arranged at the ends of marine pipelines in a sleeving mode, a plurality of bolt holes are formed in the surfaces of the flange plates, and the two flange plates are connected through bolts. Mounting rings are inserted into the ends, close to the bolt holes, of the surfaces of the two flange plates, elastic clamping pieces are fixed to the two sides of each mounting ring, the two elastic clamping pieces are inserted into the bolt holes in the surfaces of the two flange plates respectively, and clamping strips are integrally formed at one ends of the elastic clamping pieces and clamped at one ends of the bolt holes. The elastic clamping piece is clamped between the screw rod of the bolt and the bolt hole; the flange connection structure has the advantages that the bolts are effectively prevented from loosening, vibration between the flange plates is effectively reduced, the two flange plates can be tightly attached all the time, a gap generated by loosening or vibration of the bolts is reduced, and therefore the sealing performance of flange connection is greatly improved, leakage of media in a pipeline is avoided, and safe operation of a ship is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of flanges, specifically a marine shockproof sealing flange. Background Technology

[0002] In the field of marine engineering, the connection of marine pipelines is of paramount importance, and flange connection is one of the commonly used methods in marine pipeline connection. Traditional marine flange connection usually relies solely on bolts to fix two flanges together. However, ships are subjected to various complex external forces during navigation, such as wave impact and hull vibration, which can cause relative vibration between the flanges.

[0003] In such a vibrating environment, relying solely on bolt connections has many drawbacks. On the one hand, vibration subjectes bolts to repeated stress, which can easily lead to loosening. This, in turn, reduces the sealing performance between flanges, causing problems such as leakage of media within the pipeline. This not only wastes resources but may also threaten the safe operation of the ship. On the other hand, traditional flange connections lack effective pre-limiting and anti-loosening mechanisms. During installation, it is difficult to precisely and securely align the two flanges. Furthermore, under vibration, gaps can easily appear between the flanges after the bolts loosen, further exacerbating the sealing problem.

[0004] Furthermore, vibration between the two flanges can generate noise, affecting the working and living environment of the crew. Therefore, developing a marine anti-vibration sealing flange that can effectively prevent bolt loosening, reduce vibration between flanges, and improve connection sealing and stability is of significant practical importance. Summary of the Invention

[0005] The purpose of this invention is to provide a marine anti-vibration sealing flange to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a marine anti-vibration sealing flange, comprising a flange, the flange being sleeved and fixed to the end of a marine pipeline, the flange having multiple bolt holes on its surface, two flanges being connected by bolts, and after the two flanges are brought together, an installation ring is inserted into one end of the bolt holes on the surfaces of the two flanges, and elastic clips are fixed on both sides of the installation ring, with two sets of elastic clips respectively inserted into the bolt holes on the surfaces of the two flanges, and a retaining strip integrally formed at one end of the elastic clip, the retaining strip being secured at one end of the bolt hole, and the elastic clip being held between the bolt thread and the bolt hole.

[0007] Preferably, a limiting groove is provided at one end of the bolt hole. The limiting groove is an annular groove, and the depth of the limiting groove is equal to half the width of the mounting ring. The end of the mounting ring is inserted into the limiting groove, and a rubber sleeve is fitted and fixed on the outside of the mounting ring. The rubber sleeve is clamped between the mounting ring and the limiting groove and undergoes elastic deformation.

[0008] Preferably, a clamping groove is formed at the other end of the bolt hole. The clamping groove is an annular groove, the elastic clip is an arc-shaped piece, there are a plurality of elastic clips, and the plurality of elastic clips are circumferentially distributed with the inner ring opening of the mounting ring as the center of the circle. The clamping strip is an arc-shaped strip with a right trapezoidal end face, and the clamping strip is stuck in the clamping groove.

[0009] Preferably, a hoop groove is formed on the outer ring surface of the clamping strip. The hoop groove is a "U"-shaped groove.

[0010] Preferably, a rubber ring is fixed on the inner ring surface of the elastic clip, and a plurality of rubber strips are fixed on the inner ring surface of the clamping strip. The rubber ring is clamped between the screw rod of the bolt and the mounting ring to generate elastic deformation, and the rubber strip is clamped between the screw rod of the bolt and the elastic clip to generate elastic deformation.

[0011] Preferably, a rubber pad is inserted and fixed inside the clamping groove. The rubber pad is a "convex"-shaped circular ring plate. One end of the rubber pad is fixed on the surface of the flange, and one end of the rubber pad is clamped between the bolt and the flange.

[0012] Preferably, a side groove is formed on the outer ring surface of the flange. The side groove is an annular groove. The two side grooves between the two flanges form an annular groove with a "U"-shaped break, and a rubber hoop is sleeved in the two side grooves between the two flanges.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: The marine shock-proof sealing flange proposed by the present invention, by forming a limiting groove at one end of the bolt hole, inserting the end of the mounting ring into the limiting groove, and utilizing the elastic deformation generated by the rubber sleeve, the mounting ring is firmly fixed in the limiting groove without falling off. At the same time, the elastic clips on both sides of the mounting ring are inserted into the bolt holes on the surfaces of the two flanges, and the clamping strips at the ends of the elastic clips are stuck in the clamping grooves. When the bolt is not installed, the two flanges on both sides can be pulled tightly together, realizing the pre-limiting of the two flanges, facilitating the subsequent installation of the bolt, and avoiding the problems of inaccurate docking and instability caused by the lack of pre-limiting in the installation process of the traditional flange connection. The elastic clip is clamped between the screw rod of the bolt and the bolt hole, the rubber ring is clamped between the bolt screw rod and the mounting ring to generate elastic deformation, and the rubber strip is clamped between the bolt screw rod and the elastic clip to generate elastic deformation. These elastic components can increase the friction force between the bolt and the bolt hole, and tightly clamp the bolt screw rod in the bolt hole. At the same time, the pulling effect of the clamping strip and the elastic limit generated by clamping one end of the rubber pad between the bolt and the flange further prevent the two flanges from loosening the bolt due to vibration, effectively improving the stability and reliability of the flange connection.

[0014] Grooves are cut into the outer circumferential surfaces of the two flanges, forming a U-shaped annular groove. A rubber clamp, after being expanded, is fitted into the groove, and its elasticity allows it to spring back and lock tightly into place. The rubber clamp has good elasticity, absorbing vibrations between the two flanges and reducing vibration transmission, thereby lowering vibration-induced noise and providing a quieter working and living environment for the crew. It also helps protect the flange connection structure and extends its service life. This marine anti-vibration sealing flange effectively prevents bolts from loosening and reduces vibration between flanges, ensuring a tight fit between the two flanges at all times. This reduces gaps caused by loose bolts or vibration, thereby greatly improving the sealing performance of the flange connection, preventing leakage of media in pipelines, and ensuring the safe operation of the ship. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Sectional view of the structure at point AA; Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point B; Figure 4 for Figure 2 Enlarged schematic diagram of the structure at point C; Figure 5 This is a schematic diagram of the connection structure between the mounting ring and the elastic clip of the present invention; Figure 6 This is a schematic diagram of the flange structure of the present invention.

[0016] In the diagram: flange 1, bolt hole 101, limit groove 102, clamping groove 103, side groove 104, marine pipe 2, bolt 3, mounting ring 4, rubber sleeve 401, elastic clip 402, clamping strip 403, rubber ring 404, rubber strip 405, hoop groove 406, rubber pad 5, rubber hoop 6. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-6This invention provides a technical solution: a marine anti-vibration sealing flange, including a flange 1, which is sleeved and fixed to the end of a marine pipe 2. The surface of the flange 1 has multiple bolt holes 101. Two flanges 1 are connected by bolts 3. After the two flanges 1 are brought together, an installation ring 4 is inserted into the end of the bolt holes 101 on the surface of the two flanges 1. Elastic clips 402 are fixed on both sides of the installation ring 4. Two sets of elastic clips 402 are respectively inserted into the bolt holes 101 on the surface of the two flanges 1. One end of the elastic clip 402 is integrally formed with a retaining strip 403, which is clamped at one end of the bolt hole 101. The elastic clip 402 is clamped between the bolt shank of the bolt 3 and the bolt hole 101.

[0019] First, insert the mounting ring 4 into one side of the bolt hole 101 on the surface of a flange 1. Then, place the two flanges 1 together. As the two flanges 1 are pushed in, when they are seamlessly pressed together, two sets of elastic clips 402 are respectively inserted into the bolt holes 101 on the surface of the two flanges 1, and the retaining strip 403 is clamped on one side of the bolt hole 101. At this time, the two flanges 1 are pulled tightly together by the elastic clips 402 and the retaining strip 403. Then, the bolt 3 is passed through the bolt holes 101 on the surface of the two flanges 1 and locked. The elastic clips 402 clamp between the bolt 3 and the bolt hole 101, so that the bolt 3 is tightly clamped in the bolt hole 101. With the traction of the retaining strip 403, the bolt 3 is prevented from loosening due to vibration of the two flanges 1.

[0020] To achieve pre-limiting of the two assembled flanges 1 by installing elastic clips 402 and retaining strips 403 in bolt holes 101, the following is proposed: A limiting groove 102 is provided at one end of the bolt hole 101. The limiting groove 102 is an annular groove, and its depth is equal to half the width of the mounting ring 4. The end of the mounting ring 4 is inserted into the limiting groove 102. A rubber sleeve 401 is fitted and fixed on the outside of the mounting ring 4. The rubber sleeve 401 is clamped between the mounting ring 4 and the limiting groove 102 and undergoes elastic deformation. A retaining groove 103 is provided at the other end of the bolt hole 101. The retaining groove 103 is an annular groove. Multiple elastic clamping pieces 402 are provided, and they are distributed circumferentially around the inner annular opening of the mounting ring 4. The retaining strip 403 is an arc-shaped strip with a right-angled trapezoidal end face. The retaining strip 403 is inserted into the retaining groove 103; the outer ring surface of the retaining strip 403 is provided with a hoop groove 406, which is U-shaped; a rubber ring 404 is fixed to the inner ring surface of the elastic clip 402, and multiple rubber strips 405 are fixed to the inner ring surface of the retaining strip 403. The rubber ring 404 is clamped between the bolt 3 and the mounting ring 4 to produce elastic deformation, and the rubber strips 405 are clamped between the bolt 3 and the elastic clip 402 to produce elastic deformation; a rubber pad 5 is inserted and fixed inside the retaining groove 103. The rubber pad 5 is a U-shaped circular plate. One end of the rubber pad 5 is fixed to the surface of the flange 1, and the other end of the rubber pad 5 is clamped between the bolt 3 and the flange 1.

[0021] When installing the mounting ring 4, first insert the elastic clip 402 on one side of the mounting ring 4 into the bolt hole 101 on the surface of one flange 1. The retaining strip 403 at the end of the elastic clip 402 will then engage in the retaining groove 103, ensuring the mounting ring 4 will not fall out of the retaining groove 102. Then, align the bolt hole 101 on the surface of the other flange 1 with the elastic clip 402 on the other side of the mounting ring 4 and push it in until the two flanges 1 are tightly pressed together. At this point, multiple elastic clips 402 on the other side of the mounting ring 4 are inserted into the bolt holes 101 on the surface of the other flange 1, and the retaining strip 403 is engaged in the corresponding retaining groove 103. The elastic clips 402 on both sides of the mounting ring 4, together with the retaining strips 403, pull the flanges 1 on both sides together. That is, even when the bolts 3 are not installed, the two flanges 1 will not separate at will, and when the flanges 1 vibrate, the elastic clips 402 and retaining strips 403 still meet the traction limit. In order to strengthen the connection between the two flanges 1, the bolts 3 are tightened by passing through the bolt holes 101 on the surface of the two flanges 1. At this time, the rubber strips 405 and rubber rings 404 are clamped between the bolts 3 and the bolt holes 101, and one end of the rubber pads 5 is clamped between the bolts 3 and the flanges 1, which meets the elastic limit for preventing the bolts 3 from loosening.

[0022] To reduce vibration between the two flanges 1, the following was proposed: The outer circumference of the flange 1 is provided with a side groove 104, which is an annular groove. The two side grooves 104 between the two flanges 1 form an annular groove with a "U"-shaped break. A rubber hoop 6 is fitted in the two side grooves 104 between the two flanges 1.

[0023] After the two flanges 1 are fixed together by bolts 3, the rubber clamp 6 is expanded and fitted into the side groove 104. The rubber clamp 6 rebounds and is tightly locked in the two side grooves 104 between the two flanges 1 to absorb the vibration between the two flanges 1.

[0024] Detailed instructions for using this marine anti-vibration sealing flange: Select one of the flanges 1 as the initial installation object. Insert the elastic clip 402 on one side of the mounting ring 4 into a bolt hole 101 on the surface of the flange 1. The elastic clip 402 is an arc-shaped piece, and multiple elastic clips 402 are distributed circumferentially with the inner ring opening of the mounting ring 4 as the center. As the elastic clip 402 is inserted, the retaining strip 403 at its end engages in the retaining groove 103 opened at the other end of the bolt hole 101. The retaining strip 403 is an arc strip with a right-angled trapezoidal end face, and the retaining groove 103 is an annular groove. At this time, the mounting ring 4 will not fall off in the limiting groove 102 (the annular groove opened at one end of the bolt hole 101, with a depth equal to half the width of the mounting ring 4). A rubber sleeve 401 is fitted and fixed on the outside of the mounting ring 4. The rubber sleeve 401 is clamped between the mounting ring 4 and the limiting groove 102 and undergoes elastic deformation. Following the steps described above, perform a similar pre-installation operation on the elastic clamp 402 on the other side of the mounting ring 4 (without installing the other flange 1 at this time) to ensure that the installation on one side of the mounting ring 4 is secure for subsequent docking with the other flange 1. Align the bolt holes 101 on the surface of the other flange 1 with the pre-installed elastic clamp 402 on the other side of the mounting ring 4. Slowly push the flange 1 in until the two flanges 1 are tightly pressed together. At this point, multiple elastic clamps 402 on the other side of the mounting ring 4 are inserted into the bolt holes 101 on the surface of the other flange 1, and the retaining strips 403 are engaged in the corresponding slots 103. The elastic clamps 402 on both sides of the mounting ring 4, together with the retaining strips 403, pull the flanges 1 together. Even without the bolts 3 installed, the two flanges 1 will not separate arbitrarily, and when the flanges 1 vibrate, the elastic clamps 402 and retaining strips 403 can still provide traction and limiting functions. Insert the bolts 3 through the bolt holes 101 on the surfaces of the two flanges 1. Using appropriate tools, bolt 3 is tightened. At this time, rubber strip 405 (fixed to the inner ring surface of clamping strip 403) and rubber ring 404 (fixed to the inner ring surface of elastic clamping piece 402) are clamped between the bolt 3 and bolt hole 101, resulting in elastic deformation. Simultaneously, one end of rubber pad 5 (a "convex" shaped annular plate, one end fixed to the surface of flange 1) inserted and fixed inside the clamping groove 103 is clamped between bolt 3 and flange 1, satisfying the elastic limiting of bolt 3 to prevent loosening. After the two flanges 1 are brought together and fixed by bolt 3, rubber clamp 6 is expanded. The expanded rubber clamp 6 is fitted into the side grooves 104 opened on the outer ring surface of the two flanges 1. The two side grooves 104 between the two flanges 1 form an annular groove with a "U" shaped break. After the rubber clamp 6 rebounds, it is tightly clamped in the two side grooves 104 between the two flanges 1 to absorb the vibration between the two flanges 1. By following the above steps, the installation of the marine anti-vibration sealing flange is completed. This structure can effectively prevent bolts 3 from loosening and reduce vibration between the two flanges 1.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A shockproof sealing flange for a ship, comprising a flange plate (1) sleeved and fixed at an end of a pipeline (2) for the ship, a plurality of bolt holes (101) being formed on a surface of the flange plate (1), and two flange plates (1) being connected by bolts (3), characterized in that: After two flanges (1) are abutted together, the end close to the bolt hole (101) on the surface of two flanges (1) is inserted with a mounting ring (4), the two sides of the mounting ring (4) are fixed with elastic clamping pieces (402), two groups of elastic clamping pieces (402) are respectively inserted in the bolt hole (101) on the surface of two flanges (1), one end of the elastic clamping piece (402) is integrally formed with a clamping strip (403), the clamping strip (403) is clamped in one end of the bolt hole (101), and the elastic clamping piece (402) is clamped between the screw rod of the bolt (3) and the bolt hole (101).

2. A shock mounted sealing flange for marine use according to claim 1, characterised in that: One end of the bolt hole (101) is provided with a limiting groove (102), the limiting groove (102) is an annular groove, the depth of the limiting groove (102) is equal to one half of the width of the mounting ring (4), the end of the mounting ring (4) is inserted into the limiting groove (102), the outer side of the mounting ring (4) is provided with a rubber sleeve (401), and the rubber sleeve (401) is elastically deformed by being clamped between the mounting ring (4) and the limiting groove (102).

3. A shock mounted sealing flange for marine use according to claim 1, wherein: The other end of the bolt hole (101) is provided with a clamping groove (103), the clamping groove (103) is an annular groove, the elastic clamping piece (402) is a circular arc piece, the elastic clamping piece (402) is provided with a plurality of circular arc pieces, the plurality of elastic clamping pieces (402) are distributed in a circle with the inner ring opening of the mounting ring (4) as the center, the clamping strip (403) is a circular arc strip with a straight angle trapezoidal end face, and the clamping strip (403) is clamped in the clamping groove (103).

4. A shock mounted sealing flange for marine use according to claim 1, wherein: The outer ring surface of the clamping strip (403) is provided with a hoop groove (406), and the hoop groove (406) is a "U" shaped groove.

5. A shock mounted sealing flange for marine use according to claim 1, wherein: The inner ring surface of the elastic clamping piece (402) is fixed with a rubber ring (404), the inner ring surface of the clamping strip (403) is fixed with a plurality of rubber strips (405), the rubber ring (404) is elastically deformed by being clamped between the screw rod of the bolt (3) and the mounting ring (4), and the rubber strip (405) is elastically deformed by being clamped between the screw rod of the bolt (3) and the elastic clamping piece (402).

6. A shock mounted sealing flange for marine use according to claim 3, wherein: The inside of the clamping groove (103) is inserted and fixed with a rubber pad (5), the rubber pad (5) is a "convex" shaped circular ring plate, one end of the rubber pad (5) is fixed on the surface of the flange (1), and the other end of the rubber pad (5) is clamped between the bolt (3) and the flange (1).

7. A shock mounted sealing flange for marine use according to claim 1, wherein: The outer ring surface of the flange (1) is provided with a side groove (104), the side groove (104) is an annular groove, the two side grooves (104) between the two flanges (1) form a "U" shaped annular groove, and the rubber hoop (6) is sleeved in the two side grooves (104) between the two flanges (1).

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