Static sealing structure of hull hatch cover manhole

Abstract

The utility model discloses a static sealing structure of a manhole of a hatch cover of a ship body, relates to the technical field of sealing structures, and solves the problems that a sealing gasket made of a large amount of salt and rubber materials can react with seawater, so that the performance of the sealing gasket is reduced, the sealing gasket is degraded and broken, and the service life of the sealing gasket is short. A manhole cover is installed on the upper side of the flange, a plurality of bolts which are distributed at equal intervals in the circumferential direction are installed on the manhole cover and the flange, and an embedding groove is formed in the upper end face of the flange. The sealing assembly is used for sealing the flange and the manhole cover; by installing the third sealing gasket and the lantern ring, the rubber sealing gasket can be prevented from being corroded by seawater, the service life of the rubber sealing gasket is prolonged, the sealing assembly is composed of the first sealing gasket and the second sealing gasket, and it can be effectively avoided that when the damaged sealing gasket is replaced, the service life of the rubber sealing gasket is prolonged. Crushed rubber gaskets are adhered to the flanges, so that cleaning is inconvenient.

Description

Technical Field

[0001] This utility model relates to the field of sealing structure technology, specifically a static sealing structure for a manhole in a ship's hatch. Background Technology

[0002] A manhole is an opening structure used for personnel to enter and exit equipment for installation, maintenance, and safety inspection. It mainly consists of a short cylindrical section (or short pipe), a flange, and a manhole cover with a handle.

[0003] Existing ship manholes are located on the deck. During salvage operations or when encountering stormy weather, there will be a lot of seawater on the deck. Since a sealing gasket is installed between the manhole cover and the flange, the sealing gasket is usually made of rubber to prevent leakage of the manhole cover. However, because seawater contains a lot of salt, the sealing gasket made of rubber material will react with the seawater, causing its performance to decline, deteriorate and crack, resulting in a short service life. Utility Model Content

[0004] The purpose of this invention is to provide a static sealing structure for the manhole of a ship's hatch that can extend the service life of the sealing gasket, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a static sealing structure for a manhole on a ship's hatch, comprising a short pipe, a flange fixedly welded to the upper end of the short pipe, a manhole cover installed on the upper side of the flange, and a plurality of bolts circumferentially distributed on the manhole cover and the flange, and further comprising a groove formed on the upper end face of the flange; a sealing assembly for sealing between the flange and the manhole cover, the sealing assembly being movably embedded in the groove; and a sealing gasket three for blocking the sealing assembly, the sealing gasket three being installed on the upper end of the flange.

[0006] Preferably, the sealing assembly includes a sealing gasket, which is made of rubber material and has an inner diameter equal to that of the short pipe. The sealing gasket is movably sleeved on the outside of the sealing gasket.

[0007] Preferably, the lower end of the sealing gasket three is provided with a collar, and the sealing gasket three and the collar are integrally formed, and the inner diameter of the sealing gasket three is equal to the outer diameter of the sealing gasket one.

[0008] Preferably, the collar is movably sleeved on the outside of the flange, the inner diameter of the collar is equal to the outer diameter of the flange, and the height of the upper end face of the sealing gasket is greater than the height of the upper end face of the sealing gasket.

[0009] Preferably, a second sealing gasket is fixedly embedded at the lower end of the first sealing gasket, and the second sealing gasket is conical in shape, which increases the contact surface between the second sealing gasket and the first sealing gasket.

[0010] Preferably, the second sealing gasket is made of polytetrafluoroethylene material, and the upper end of the second sealing gasket is provided with a plurality of pins distributed equidistantly in a circle, which can position the first sealing gasket and the second sealing gasket.

[0011] Preferably, the lower end face of the sealing gasket is provided with a groove, the groove is cylindrical in shape, and the cross-sectional shape of the pin and the groove is the same.

[0012] Preferably, both the first sealing gasket and the second sealing gasket have through holes equal to the number of bolts, which facilitates the bolts passing through the sealing assembly.

[0013] Preferably, both the sealing gasket and the collar are made of stainless steel.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. This utility model uses a sealing gasket and a collar, which are integrally molded and made of stainless steel. This not only makes it difficult for liquid to seep in from the bottom side of the sealing gasket, but also prevents the sealing gasket made of rubber from directly contacting seawater, thereby avoiding corrosion of the rubber sealing gasket by seawater and extending the service life of the rubber sealing gasket.

[0016] 2. This utility model sets a sealing component consisting of a sealing gasket one and a sealing gasket two. The sealing gasket two, made of polytetrafluoroethylene material, is located at the bottom of the sealing gasket one, which can separate the sealing gasket one, made of rubber material, from the flange. This can effectively prevent broken rubber gaskets from adhering to the flange and causing cleaning inconvenience when replacing damaged sealing gaskets. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model;

[0018] Figure 2 This is a schematic diagram showing the disassembled manhole cover and short tube of this utility model;

[0019] Figure 3 This is a side sectional view of the short tube of this utility model;

[0020] Figure 4 This is a schematic diagram showing the disassembled sealing assembly, stainless steel gasket, and short pipe of this utility model;

[0021] Figure 5 This is a side sectional view of the sealing structure of this utility model;

[0022] Figure 6 This is a schematic diagram showing the disassembled sealing structure of this utility model.

[0023] In the diagram: 1. Short pipe; 2. Flange; 3. Groove; 4. Sealing assembly; 401. Sealing gasket one; 402. Sealing gasket two; 403. Pin; 404. Groove; 5. Sealing gasket three; 6. Collar; 7. Manhole cover; 8. Bolt; 9. Through hole. 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 , Figure 2 , Figure 3 The diagram illustrates a static sealing structure for a ship's hatch manhole, comprising a short pipe 1, a flange 2 fixedly welded to the upper end of the short pipe 1, a manhole cover 7 installed on the upper side of the flange 2, and multiple bolts 8 circumferentially distributed on the manhole cover 7 and the flange 2. It also includes a groove 3 formed on the upper end face of the flange 2; a sealing assembly 4 for sealing between the flange 2 and the manhole cover 7, the sealing assembly 4 being movably embedded in the groove 3; and a sealing gasket 5 for blocking the sealing assembly 4, the sealing gasket 5 being installed on the upper end of the flange 2.

[0027] Please see Figure 4 The sealing assembly 4 includes a sealing gasket 401, which is made of rubber material. The inner diameter of the sealing gasket 401 is equal to the inner diameter of the short pipe 1. A sealing gasket 5 is movably sleeved on the outside of the sealing gasket 401. A collar 6 is provided at the lower end of the sealing gasket 5. The sealing gasket 5 and the collar 6 are integrally formed. The inner diameter of the sealing gasket 5 is equal to the outer diameter of the sealing gasket 401.

[0028] Please see Figure 3 The collar 6 is movably fitted onto the outside of the flange 2. The inner diameter of the collar 6 is equal to the outer diameter of the flange 2. The height of the upper end face of the sealing gasket 401 is greater than the height of the upper end face of the sealing gasket 5. Both the sealing gasket 5 and the collar 6 are made of stainless steel.

[0029] The working principle that extends the service life of the sealing gasket is as follows: Before the manhole cover 7 is installed, sealing gasket 3 5 is fitted onto the outside of sealing gasket 1 401. At this time, the height of the upper end face of sealing gasket 1 401 is greater than the height of the upper end face of sealing gasket 3 5. After the manhole cover 7 is installed, sealing gasket 1 401 is compressed, causing its upper end face height to be equal to that of sealing gasket 3 5. When there is seawater on the hull plate, sealing gasket 3 5 and collar 6 can effectively prevent seawater from seeping in from the bottom side of sealing gasket 3 5. Sealing gasket 3 5, made of stainless steel, surrounds the outside of sealing gasket 1 401, made of rubber, which can effectively prevent sealing gasket 1 401 from directly contacting seawater and being corroded by seawater, thus extending the service life of sealing gasket 1 401.

[0030] Example 2

[0031] Please see Figure 5 This embodiment further explains Example 1: a second sealing gasket 402 is fixedly embedded at the lower end of the first sealing gasket 401, and the second sealing gasket 402 is conical in shape. The conical shape of the second sealing gasket 402 can increase its contact surface with the first sealing gasket 401. Both the first sealing gasket 401 and the second sealing gasket 402 are provided with through holes 9 equal in number to the bolts 8. The through holes 9 facilitate the bolts 8 to pass through the sealing assembly 4.

[0032] In this embodiment: when the sealing gasket 401 is severely aged and broken and needs to be replaced, since the bottom of the sealing gasket 401 is adhered to the sealing gasket 402 made of polytetrafluoroethylene, when removing the old sealing assembly 4, it is only necessary to lift up the bottom sealing gasket 402 to quickly remove the old sealing gasket 401 from the groove 3 on the flange 2. This also effectively avoids the broken rubber gasket from adhering to the flange 2 and causing cleaning inconvenience.

[0033] Example 3

[0034] Please see Figure 6 This embodiment further illustrates other embodiments: the upper end of the second sealing gasket 402 is provided with a plurality of pins 403 distributed circumferentially at equal intervals. The pins 403 can position the first sealing gasket 401 and the second sealing gasket 402. The second sealing gasket 402 is made of polytetrafluoroethylene material. The lower end face of the first sealing gasket 401 is provided with a groove 404. The groove 404 is cylindrical in shape. The pins 403 and the groove 404 have the same cross-sectional shape.

[0035] In this embodiment: when bonding sealing gasket 1 401 and sealing gasket 2 402, glue is applied to the bottom of sealing gasket 1 401, and then sealing gasket 2 402 and sealing gasket 1 401 are bonded together. Before bonding, the pin 403 is inserted into sealing gasket 1 401, which not only aligns sealing gasket 1 401 and sealing gasket 2 402, but also helps to bond sealing gasket 1 401 and sealing gasket 2 402 firmly.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0037] Although embodiments of the present 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 present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A static sealing structure for a manhole on a ship's hull hatch, comprising a short pipe (1), wherein a flange (2) is fixedly welded to the upper end of the short pipe (1), a manhole cover (7) is installed on the upper side of the flange (2), and a plurality of bolts (8) circumferentially distributed on the manhole cover (7) and the flange (2), characterized in that, Also includes: A groove (3) is formed on the upper end face of the flange (2); A sealing assembly (4) is used to seal between the flange (2) and the manhole cover (7), and the sealing assembly (4) is movably embedded in the groove (3); The sealing gasket three (5) is used to block the sealing assembly (4) and is installed on the upper end of the flange (2).

2. The static sealing structure for a ship hull hatch manhole according to claim 1, characterized in that: The sealing assembly (4) includes a sealing gasket one (401) made of rubber material, and a sealing gasket three (5) movably sleeved on the outside of the sealing gasket one (401).

3. The static sealing structure for a ship hull hatch manhole according to claim 2, characterized in that: The lower end of the sealing gasket three (5) is provided with a collar (6), and the sealing gasket three (5) and the collar (6) are integrally formed.

4. The static sealing structure for a ship hull hatch manhole according to claim 3, characterized in that: The collar (6) is movably sleeved on the outside of the flange (2), and the height of the upper end face of the sealing gasket one (401) is greater than the height of the upper end face of the sealing gasket three (5).

5. The static sealing structure for a ship hull hatch manhole according to claim 2, characterized in that: The lower end of the first sealing gasket (401) is fixedly embedded with the second sealing gasket (402), and the second sealing gasket (402) is conical in shape.

6. The static sealing structure for a manhole in a ship's hatch according to claim 5, characterized in that: The second sealing gasket (402) is made of polytetrafluoroethylene material, and the upper end of the second sealing gasket (402) is provided with a plurality of pins (403) distributed circumferentially.

7. The static sealing structure for a ship hull hatch manhole according to claim 6, characterized in that: The lower end face of the sealing gasket (401) is provided with a groove (404), and the cross-sectional shape of the pin (403) and the groove (404) is the same.

8. The static sealing structure for a manhole in a ship's hatch according to claim 5, characterized in that: Both the first sealing gasket (401) and the second sealing gasket (402) have through holes (9) in the same number as the bolts (8).

9. The static sealing structure for a manhole in a ship's hatch according to claim 4, characterized in that: Both the sealing gasket (5) and the collar (6) are made of stainless steel.

Images