A sealing structure for the connection surface of a ship's scavenging air box

Abstract

This utility model discloses a sealing structure for the connecting surface of a marine scavenging air box, relating to the field of marine technology. It includes: a connecting panel; multiple connecting holes arranged in a ring array on the front of the connecting panel; a connecting pipe disposed on the front of the connecting panel; a connecting flange fixedly fitted onto the outer wall of the connecting pipe; multiple connecting bolts passing through holes on the connecting flange and threadedly connected to the inner wall of corresponding connecting holes; an inner sealing mechanism disposed on the back of the connecting flange; and an outer sealing mechanism disposed on the outside of the connecting flange. This sealing structure for the connecting surface of the marine scavenging air box, through the cooperation of the inner sealing ring mechanism and the outer sealing mechanism, achieves a double-layer stepped seal while simultaneously sealing the gap between the inner wall of the annular groove and the outer wall of the connecting flange, increasing the sealing strength between the connecting panel and the connecting flange of the marine scavenging air box.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, specifically to a sealing structure for the connection surface of a marine scavenging air box. Background Technology

[0002] The scavenging air box is a core component of the intake system of a marine internal combustion engine. Its main function is to collect fresh air and evenly introduce it into each cylinder, while simultaneously expelling exhaust gases after combustion, creating conditions for complete combustion of fuel and ensuring efficient and stable engine operation. The scavenging air box connection surface refers to the contact surface between the scavenging air box and adjacent components.

[0003] The connection between the ship's scavenging air box and the pipeline is mostly made through flanges. The sealing method is to place a sealing ring between the two flange faces and then use bolts to tighten and generate pressure to deform the sealing ring, filling the gap to prevent the medium from leaking. The above sealing method relies on only a sealing ring, and the sealing strength is not high. Therefore, a sealing structure for the connection surface of the ship's scavenging air box is needed to solve the above problems. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a sealing structure for the connecting surface of a ship's scavenging air box, which solves the problem of low sealing ring strength when the connecting surface of the ship's scavenging air box is connected to the flange.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a sealing structure for the connecting surface of a marine scavenging air box, comprising:

[0006] Connection panel;

[0007] Multiple connection holes are arranged in a ring array on the front of the connection panel;

[0008] A connecting pipe is disposed on the front side of the connecting panel;

[0009] A connecting flange, which is fixedly fitted onto the outer wall of the connecting pipe;

[0010] Multiple connecting bolts, which pass through holes in the connecting flange and are threaded to the inner wall of the corresponding connecting holes;

[0011] An internal sealing mechanism is provided on the back of the connecting flange, and the internal sealing mechanism is used to increase the sealing strength;

[0012] An external sealing mechanism is disposed outside the connecting flange, and the external sealing mechanism is used to further increase the sealing strength.

[0013] Preferably, the inner sealing mechanism includes:

[0014] An annular stepped groove is formed on the front of the connecting panel;

[0015] A stepped ring, which is fixedly connected to the back of the connecting flange and movably sleeved within the inner cavity of the annular stepped groove;

[0016] Inner sealing ring one and inner sealing ring two are both disposed in the inner cavity of the annular stepped groove. The size of inner sealing ring one is larger than that of inner sealing ring two. Both inner sealing ring one and inner sealing ring two are used to increase the sealing strength.

[0017] Preferably, the inner sealing mechanism further includes:

[0018] A limiting ring is fixedly connected to the inner cavity of the annular stepped groove, and the limiting ring is used to limit the position of the inner sealing ring II within the annular stepped groove.

[0019] Preferably, the external sealing mechanism includes:

[0020] An annular groove is formed on the front of the connecting panel, and the inner diameter of the annular groove is the same as the outer diameter of the connecting flange.

[0021] A fixed outer ring is fixedly connected to the front of the connecting panel, and the inner wall of the fixed outer ring is provided with evenly distributed internal threads.

[0022] An inner ring is assembled, wherein the outer wall of the inner ring is provided with uniformly distributed external threads, and the outer wall of the inner ring is threadedly connected to the inner wall of the fixed outer ring.

[0023] An outer sealing ring is fixedly connected to the back of the assembled inner ring and is used to seal the gap between the inner wall of the annular groove and the outer wall of the connecting flange.

[0024] Preferably, the external sealing mechanism further includes:

[0025] Multiple force-applying plates are fixedly connected to the front of the inner ring of the assembly in a ring array to assist in driving the inner ring of the assembly to rotate. The outer walls of the multiple force-applying plates are provided with uniformly distributed anti-slip textures.

[0026] Preferably, the outer wall of the connecting flange has a chamfer to facilitate the outer sealing ring being fitted onto the outside of the connecting flange.

[0027] This utility model discloses a sealing structure for the connecting surface of a marine scavenging air box, which has the following beneficial effects:

[0028] This utility model utilizes the cooperation between the annular stepped groove, the stepped ring, the inner sealing ring one and the inner sealing ring two to achieve a double-layer stepped seal, which increases the sealing strength between the ship's scavenging air box connecting panel and the connecting flange.

[0029] This invention utilizes the cooperation between the annular groove, the fixed outer ring, the assembled inner ring, and the outer sealing ring to seal the gap between the inner wall of the annular groove and the outer wall of the connecting flange, further increasing the sealing strength between the ship's scavenging air box connecting panel and the connecting flange. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 This is a side sectional view of the present invention.

[0033] Figure 3 This utility model Figure 2 A magnified schematic diagram of the structure at point A in the middle.

[0034] In the diagram: 1. Connecting panel; 2. Connecting pipe; 3. Connecting flange; 4. Connecting bolt; 5. Inner sealing mechanism; 51. Stepped ring; 52. Inner sealing ring one; 53. Inner sealing ring two; 54. Limiting ring; 6. Outer sealing mechanism; 61. Fixed outer ring; 62. Assembled inner ring; 63. Outer sealing ring; 64. Force application plate. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model are described clearly and completely. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0036] This application provides a sealing structure for the connection surface of a ship's scavenging air box, which solves the problem of low sealing ring strength when the connection surface of the ship's scavenging air box is connected to the flange.

[0037] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0038] This utility model provides, for example Figure 1-3The diagram illustrates a sealing structure for a ship's scavenging air box connection surface, comprising: a connecting panel 1; multiple connecting holes arranged in a circular array on the front side of the connecting panel 1; a connecting pipe 2 disposed on the front side of the connecting panel 1; a connecting flange 3 fixedly fitted onto the outer wall of the connecting pipe 2, the number and size of the holes on the connecting flange 3 corresponding one-to-one with the multiple connecting holes; multiple connecting bolts 4 passing through the holes on the connecting flange 3 and threadedly connected to the inner wall of the corresponding connecting holes; an inner sealing mechanism 5 disposed on the back side of the connecting flange 3, used to achieve a double-layer stepped seal and increase sealing strength; and an outer sealing mechanism 6 disposed on the outside of the connecting flange 3, used to further increase sealing strength.

[0039] The inner sealing mechanism 5 includes: an annular stepped groove, which is formed on the front of the connecting panel 1; a stepped ring 51, which is fixedly connected to the back of the connecting flange 3 and movably sleeved within the inner cavity of the annular stepped groove; an inner sealing ring 1 52 and an inner sealing ring 2 53, both of which are disposed within the inner cavity of the annular stepped groove, with the inner sealing ring 1 52 being larger than the inner sealing ring 2 53, and both being used to increase the sealing strength; and a limiting ring 54, which is fixedly connected to the inner cavity of the annular stepped groove, and is used to limit the position of the inner sealing ring 2 53 within the annular stepped groove, preventing the inner sealing ring 2 53 from moving randomly and improving the ease of operation.

[0040] The external sealing mechanism 6 includes: an annular groove, which is formed on the front side of the connecting panel 1, and the inner diameter of the annular groove is the same as the outer diameter of the connecting flange 3; a fixed outer ring 61, which is fixedly connected to the front side of the connecting panel 1, and the inner wall of the fixed outer ring 61 has evenly distributed internal threads; an assembly inner ring 62, which has evenly distributed external threads on its outer wall, and the outer wall of the assembly inner ring 62 is threadedly connected to the inner wall of the fixed outer ring 61; and an external sealing ring 63, which is fixedly connected to the back side of the assembly inner ring 62. The outer sealing ring 63 is used to seal the gap between the inner wall of the annular groove and the outer wall of the connecting flange 3. The outer diameter and inner diameter of the outer sealing ring 63 are both smaller than the inner ring 62 of the assembly. The outer wall of the connecting flange 3 is provided with a chamfer to facilitate the outer sealing ring 63 to be fitted onto the outer side of the connecting flange 3. Multiple force-applying plates 64 are fixedly connected to the front of the inner ring 62 in a ring array to assist in driving the inner ring 62 to rotate. The outer walls of the multiple force-applying plates 64 are provided with evenly distributed anti-slip textures to increase the friction between the plates and the palms of the workers.

[0041] Working principle:

[0042] When connecting the ship's scavenging air box and the connecting pipe 2, firstly, the inner sealing ring 1 52 and the inner sealing ring 2 53 are placed flat into the annular stepped groove. During this process, the inner sealing ring 2 53 must be located inside the limiting ring 54. Then, the connection can be made through the connecting flange 3 and multiple connecting bolts 4. As the connecting bolts 4 are tightened, the sealing strength will increase. After all the connecting bolts 4 are tightened, the inner ring 62 and the fixed outer ring 61 are connected by threads through the force plate 64. In this step, the outer sealing ring 63 faces the annular groove. As the inner ring 62 gradually enters the fixed outer ring 61, the outer sealing ring 63 will gradually fit into the gap between the inner wall of the annular groove and the outer wall of the connecting flange 3, which further increases the sealing strength between the ship's scavenging air box connecting panel 1 and the connecting flange 3.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sealing structure for the connecting surface of a marine scavenging air box, characterized in that, include: Connect panel (1); Multiple connection holes are arranged in a ring array on the front side of the connection panel (1); A connecting pipe (2) is disposed on the front side of the connecting panel (1); A connecting flange (3) is fixedly sleeved on the outer wall of the connecting pipe (2); Multiple connecting bolts (4) are threaded through holes in the connecting flange (3) and connected to the inner wall of the corresponding connecting hole. An inner sealing mechanism (5) is provided on the back of the connecting flange (3) and is used to increase the sealing strength. An external sealing mechanism (6) is provided outside the connecting flange (3) and is used to further increase the sealing strength.

2. The sealing structure for the connecting surface of a marine scavenging air box according to claim 1, characterized in that, The inner sealing mechanism (5) includes: An annular stepped groove is formed on the front of the connecting panel (1); Step ring (51), the step ring (51) is fixedly connected to the back of the connecting flange (3), and the step ring (51) is movably sleeved in the inner cavity of the annular step groove; Inner sealing ring one (52) and inner sealing ring two (53) are both disposed in the inner cavity of the annular stepped groove. The size of inner sealing ring one (52) is larger than that of inner sealing ring two (53). Both inner sealing ring one (52) and inner sealing ring two (53) are used to increase the sealing strength.

3. The sealing structure for the connecting surface of a marine scavenging air box according to claim 2, characterized in that, The inner sealing mechanism (5) further includes: The limiting ring (54) is fixedly connected to the inner cavity of the annular stepped groove. The limiting ring (54) is used to limit the position of the inner sealing ring (53) in the annular stepped groove.

4. The sealing structure for the connecting surface of a marine scavenging air box according to claim 1, characterized in that, The external sealing mechanism (6) includes: An annular groove is formed on the front of the connecting panel (1), and the inner diameter of the annular groove is the same as the outer diameter of the connecting flange (3). A fixed outer ring (61) is fixedly connected to the front of the connecting panel (1), and the inner wall of the fixed outer ring (61) is provided with uniformly distributed internal threads. The inner ring (62) is assembled, and the outer wall of the inner ring (62) is provided with uniformly distributed external threads. The outer wall of the inner ring (62) is threadedly connected to the inner wall of the fixed outer ring (61). An outer sealing ring (63) is fixedly connected to the back of the assembled inner ring (62). The outer sealing ring (63) is used to seal the gap between the inner wall of the annular groove and the outer wall of the connecting flange (3).

5. The sealing structure for the connecting surface of a marine scavenging air box according to claim 4, characterized in that, The external sealing mechanism (6) further includes: multiple force-applying plates (64), which are fixedly connected to the front of the assembly inner ring (62) in a ring array to assist in driving the assembly inner ring (62) to rotate. The outer walls of the multiple force-applying plates (64) are provided with uniformly distributed anti-slip textures.

6. The sealing structure for the connecting surface of a marine scavenging air box according to claim 1, characterized in that, The outer wall of the connecting flange (3) is chamfered to facilitate the outer sealing ring (63) to be fitted onto the outside of the connecting flange (3).

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