Installation structure for mutual use and mutual backup of sewage well lid and ballast well lid

Abstract

The utility model relates to a mutually-used and mutually-prepared installation structure for a sewage well lid and a ballast well lid. The seat ring flange is mounted on the inner wall of the coaming; a double-end stud, a nut and a sealing plate are arranged between the first flange and the seat ring flange, the double-end stud penetrates through the lower end of the seat ring flange to be connected with the sealing plate, and the double-end stud penetrates through the upper end of the first flange to be locked through the nut; when the cargo hold is ballasted, the number of the first flanges is two, the lower first flange is connected with the filter screen plate, and the upper first flange is connected with the ballasting well lid; under the normal condition, the number of the first flange is one, and the first flange is connected with the sewage well lid. According to the installation structure for mutual use and preparation of the sewage well lid and the ballast well lid, the well lid is designed to adopt the cover plates with the same specification size and hole distance, and under the condition that the cargo hold is ballasted, the ballast well lid and the sewage well in the cargo hold can be mutually prepared and used, so that the ballast well lid and the sewage well can meet the requirements of ships under different conditions.

Description

Technical Field

[0001] This utility model relates to the field of marine technology, and in particular to an installation structure for interchangeable and mutually redundant sewage well covers and ballast well covers. Background Technology

[0002] In recent years, the shipbuilding industry has developed rapidly. Ships are important maritime transportation tools, and there are many types of ships, including motorboats, jet skis, fishing boats, cruise ships, sailboats, yachts, ocean liners, and passenger ships. The development of ships has brought great convenience to our lives. Among these, a manhole cover is required above the sludge well at the bottom of the cargo hold. Furthermore, ballast tanks are the general term for the compartments used to hold ballast when the ship is empty. Ballast is heavy material that stabilizes the ship and facilitates its operation, usually seawater. The ballast wells of the ballast tanks are equipped with filter cartridges to filter impurities from the seawater when it is introduced. These are mainly achieved by opening a ballast well opening in the inner bottom plate of the ballast tank, fixing the filter cartridge inside the opening, and sealing it with a cover plate.

[0003] Under normal circumstances, ballast manhole covers in a ship's cargo hold are normally sealed, while sewage manhole covers are always open. However, when the cargo hold is under ballast, ballast manhole covers need to be opened, while sewage manhole covers need to be sealed. Sewage manholes use covers with drainage holes, while ballast manholes use covers with a sealing function. There are significant differences in their uses and designs, which means that when the cargo hold is under ballast, the sewage manhole needs to be equipped with a separate cover with a sealing function. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the incompatibility between the sewage manhole cover and the ballast manhole cover in the existing technology, which makes them unable to be used together and results in a large number of accessories on board.

[0005] To solve the above-mentioned technical problems, this utility model provides an installation structure for interchangeable and redundant sewage manhole covers and ballast manhole covers, comprising: a surrounding plate, which serves as a connecting component for the outer circumference of the manhole cover; a seat flange, which is installed on the inner wall of the surrounding plate; a first flange, which is disposed on the upper end face of the seat flange, and a plurality of fastening components are provided between the first flange and the seat flange, the fastening components including double-ended studs, nuts, and sealing plates, the double-ended studs passing through the first flange and the seat flange, the double-ended studs passing through the lower end of the seat flange and connecting to the sealing plate, and the double-ended studs passing through the upper end of the first flange and being locked by nuts; when the cargo hold is ballasted, there are two first flanges, and the two first flanges are stacked together, with a filter screen plate connected to the lower first flange and a ballast manhole cover connected to the upper first flange; under normal circumstances, there is one first flange, and a sewage manhole cover is connected to the first flange.

[0006] In one embodiment of this utility model, a washer is provided between the nut and the first flange, and the washer is fitted onto the double-ended stud.

[0007] In one embodiment of this utility model, a rubber gasket is provided between the lower end face of the first flange and the upper end face of the seat ring flange.

[0008] In one embodiment of this utility model, a rubber gasket is provided between the two first flanges.

[0009] In one embodiment of this utility model, the sewage well cover has a circular cross-section, and the ballast well cover has several through holes. The ballast well cover has a circular cross-section, and the diameter of the ballast well cover is the same as that of the sewage well cover.

[0010] In one embodiment of this utility model, the enclosure is circular, the seat flange is annular, and the outer circumference of the seat flange is welded to the inner circumference of the enclosure.

[0011] In one embodiment of this utility model, the sealing plate is welded to the lower end face of the seat ring flange.

[0012] In one embodiment of this utility model, the seat ring flange is provided with a plurality of bolt holes, which are arranged in a circular array with the center of the seat ring flange as the center.

[0013] In one embodiment of this utility model, the first flange is provided with a plurality of mounting holes, the mounting holes and bolt holes are provided in a one-to-one correspondence, and the double-ended studs pass through the mounting holes and bolt holes.

[0014] In one embodiment of this utility model, the upper end of the filter screen is welded to the inner circumference of the first flange.

[0015] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0016] The utility model describes an installation structure for the interchangeable use of sewage manhole covers and ballast manhole covers. The manhole covers are designed with two types of covers of the same size and hole spacing (one is a sewage manhole cover with multiple drainage holes, and the other is a sealed cover). Under cargo hold ballast conditions, the ballast manhole covers and sewage manholes in the cargo hold can be used interchangeably, allowing them to adapt to the needs of the ship under different conditions. Attached Figure Description

[0017] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0018] Figure 1 This is a schematic diagram of the sewage well cover in the preferred embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the manhole cover under ballast conditions in a preferred embodiment of the present invention;

[0020] Figure 3 This is a cross-sectional view of the sewage well cover in the preferred embodiment of this utility model;

[0021] Figure 4 This is a cross-sectional view of the manhole cover under ballast conditions in a preferred embodiment of the present invention;

[0022] Figure 5 This is a preferred embodiment of the present invention. Figure 3 A magnified view of a section at point A in the middle;

[0023] Figure 6 This is a preferred embodiment of the present invention. Figure 4 A magnified view of a section at point B in the middle;

[0024] Figure 7 This is a schematic diagram of the structure of the sewage well cover in a preferred embodiment of the present invention;

[0025] Figure 8 This is a schematic diagram of the structure of the ballast manhole cover in a preferred embodiment of the present invention;

[0026] Figure 9 This is a schematic diagram of the structure of the first flange in a preferred embodiment of the present invention.

[0027] Explanation of the markings on the attached drawings: 1-Washer, 2-Surround plate, 3-Double-ended stud, 4-Nut, 5-First flange, 6-Sewage well cover, 7-Seal flange, 8-Rubber gasket, 9-Sealing plate, 10-Ballast well cover, 11-Filter screen. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1-6As shown, the installation structure of the sewage well cover and ballast well cover of this utility model, which are mutually compatible and complementary, includes: a surrounding plate 2, which serves as a connecting component for the outer circumference of the well cover; a seat flange 7, which is installed on the inner wall of the surrounding plate 2; a first flange 5, which is disposed on the upper end face of the seat flange 7, and a plurality of fastening components are provided between the first flange 5 and the seat flange 7. The fastening components include a double-ended stud 3, a nut 4, and a sealing plate 9. The double-ended stud 3 passes through the first flange 5 and the seat flange 7. The double-ended stud 3 passes through the lower end of the seat flange 7 and is connected to the sealing plate 9. The double-ended stud 3 passes through the upper end of the first flange 5 and is locked by the nut 4. When the cargo hold is ballasted, there are two first flanges 5, and the two first flanges 5 are stacked together. A filter screen plate 11 is connected to the lower first flange 5, and a ballast well cover 10 is connected to the upper first flange 5. Under normal circumstances, there is one first flange 5, and a sewage well cover 6 is connected to the first flange 5.

[0030] To reinforce the connection between the nut 4 and the first flange 5, a washer 1 is provided between the nut 4 and the first flange 5, and the washer 1 is fitted onto the double-ended stud 3. Adding the washer 1 to the nut 4 and the first flange 5 can evenly distribute the pressure and improve the connection stability; at the same time, by increasing the bearing surface, the washer can reduce local stress concentration and extend the fatigue life of the connection.

[0031] To ensure a tight seal between the first flanges 5 and between the first flange 5 and the seat flange 7, and to reduce friction and wear between the contacting end faces, a rubber gasket 8 is provided between the lower end face of the first flange 5 and the upper end face of the seat flange 7. Simultaneously, a rubber gasket 8 is provided between the two first flanges 5. The rubber gaskets 8 improve the sealing performance and absorb impacts and vibrations between the first flanges 5 and between the first flange 5 and the seat flange 7.

[0032] Reference Figure 7 , 8 As shown, the sewage well cover 6 has a circular cross-section, and the ballast well cover 10 has several through holes. The ballast well cover 10 also has a circular cross-section, and its diameter is the same as that of the sewage well cover 6. The sewage well cover 6 uses a perforated cover plate, while the ballast well cover 10 uses a sealed cover plate. Both are the same size and are welded to the first flange 5 of the same specification. The ballast well cover 10 requires an additional filter screen plate 11 to be welded to the first flange 5. Specifically, the upper end of the filter screen plate 11 is welded to the inner circumference of the first flange 5. Finally, the fastening assembly consisting of rubber gaskets 8, bolts, washers, and nuts is installed and assembled sequentially according to the installation welding nodes.

[0033] The biggest difference between the two types of manhole covers, sewage manhole cover 6 and ballast manhole cover 10, is that the ballast manhole cover uses a drainage hole type cover plate while the sewage manhole cover uses a sealed cover plate. Under normal circumstances, the ballast manhole cover is closed and uses a sealed cover plate, while the sewage manhole cover is normally open and uses a drainage hole type cover plate. However, when the cargo hold is ballasted, the ballast manhole cover needs to be opened while the sewage manhole cover needs to be closed. At this time, the sewage manhole cover and the ballast manhole cover can be used interchangeably to meet the needs of the ship under different conditions.

[0034] In the above structure, the surrounding plate 2 is circular, the seat flange 7 is annular, and the outer circumference of the seat flange 7 is welded to the inner circumference of the surrounding plate 2. The sealing plate 9 is welded to the lower end face of the seat flange 7, thus sealing the bottom of the machined and drilled hole of the seat flange 7 by welding the sealing plate 9.

[0035] In the above structure, the seat flange 7 is provided with a plurality of bolt holes, which are arranged in a circular array with the center of the seat flange 7 as the center. (Refer to...) Figure 9 As shown, the first flange 5 is provided with a plurality of mounting holes, and the mounting holes and bolt holes are arranged in a one-to-one correspondence. The double-ended studs 3 pass through the mounting holes and bolt holes. Correspondingly, fastening components are arranged in a one-to-one correspondence with the mounting holes and bolt holes. By uniformly arranging the fastening components in a ring array within the circular cross-section, the stability and balance of the connection between the seat flange 7 and the first flange 5 can be improved.

[0036] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An installation structure for interchangeable and mutually redundant sewage well covers and ballast well covers, characterized in that, include: The manhole cover's outer circumference is connected by a panel. Seat flange, which is installed on the inner wall of the enclosure; A first flange is disposed on the upper end face of the seat ring flange, and a plurality of fastening components are provided between the first flange and the seat ring flange. The fastening components include a stud, a nut and a sealing plate. The stud passes through the first flange and the seat ring flange. The stud passes through the lower end of the seat ring flange and is connected to the sealing plate. The stud passes through the upper end of the first flange and is locked by the nut. When the cargo hold is ballasted, there are two first flanges, and the two first flanges are stacked together. A filter screen is connected to the lower first flange, and a ballast manhole cover is connected to the upper first flange. Normally, there is one first flange, and a sewage well cover is connected to the first flange.

2. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: A washer is provided between the nut and the first flange, and the washer is fitted onto the double-ended stud.

3. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: A rubber gasket is provided between the lower end face of the first flange and the upper end face of the seat ring flange.

4. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 3, characterized in that: A rubber gasket is provided between the two first flanges.

5. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: The sewage well cover has a circular cross-section, and the ballast well cover has several through holes. The ballast well cover has a circular cross-section, and the diameter of the ballast well cover is the same as that of the sewage well cover.

6. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: The enclosure is circular, the seat flange is annular, and the outer circumference of the seat flange is welded to the inner circumference of the enclosure.

7. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: The sealing plate is welded to the lower end face of the seat ring flange.

8. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: The seat ring flange is provided with a plurality of bolt holes, which are arranged in a circular array with the center of the seat ring flange as the center.

9. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 8, characterized in that: The first flange is provided with a number of mounting holes, and the mounting holes and bolt holes are provided in a one-to-one correspondence. The double-ended studs pass through the mounting holes and bolt holes.

10. The installation structure for the interchangeable and mutually redundant sewage well cover and ballast well cover according to claim 1, characterized in that: The upper end of the filter screen is welded to the inner circumference of the first flange.

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