DESC:FIELD OF INVENTION:
[0001] The present invention generally relates to a sealing apparatus, and more particularly, a water seal trap device that can act as a barrier to protect the confined space of vessels from foul odor and gases.

BACKGROUND OF THE INVENTION:
[0002] Large vessels or ship operations produce waste streams/drains related to piping systems as well as crew and passenger activities. The waste streams related to piping systems Waste streams related to humans on board include water from galleys and showers (grey water), as well as other solid waste.

[0003] There are prior arts available which discloses the use of vertical water seal traps. Vertical water seal traps are used in plumbing to prevent sewer gases from backing up into the home. They work by creating a water seal that blocks the gases. However, there are some drawbacks to using vertical water traps. They can be more difficult to install than horizontal water traps. This is because they need to be installed vertically, which can be more challenging in some areas of the home. They can be more prone to clogging than horizontal water traps. This is because the water seal is more likely to be disturbed in a vertical trap. They can be less effective at preventing sewer gases from backing up than horizontal water. This is because the water seal is not as deep in a vertical trap. They can be more expensive to install than horizontal water traps. They can be more difficult to access for maintenance and repair. They can be more likely to leak.

[0004] Ships generally use vertical inlet water seal traps, but due to a lack of space in a few compartments, especially machinery compartments, it is not possible to install vertical inlet water seal traps. Accordingly, there is a need of a horizontal inlet water seal trap device that can act as a barrier to protect the confined space of vessels from foul odor and gases that overcomes the above-mentioned drawbacks of the prior art.

SUMMARY OF THE INVENTION:
[0005] Accordingly, the present invention discloses a water seal trap device that can act as a barrier to protect the confined space of a ship from foul odor and gases. The water seal trap device is configured to maintain a constant water column of 150 mm irrespective of pipe sizes.

[0006] The water seal trap device comprises a trap box, an inlet pipe, an outlet pipe, a 90o elbow, a bottom flange, a gasket, a blind flange, an inlet flange, an outlet flange, and fasteners.

[0007] In an embodiment, the elbows are long radius type, the top plates and the flanges are made up of carbon steel, the gaskets made up of non-asbestos fiber, and zinc plated fasteners.

[0008] The water seal trap device comprises of material such as carbon steel, 90/10 CuNi, stainless steel, and copper.

[0009] In an embodiment, the inlet pipe is positioned in horizontal manner in order to fit into more confined space without affecting sealing criteria. The water seal trap device is configured to act as a barrier to protect the confined space of a ship from foul odor and gases. The water seal trap device is employed to discharge wastewater from the ship. The device can also be applied in preventing sewer gases from entering the buildings, kitchen sinks and preventing ships during nuclear/ biological/ chemical war.

DETAILED DESCRIPTION OF THE DRAWINGS:
[0010] The invention has other advantages and features which will be more readily apparent from the following detailed description of the invention and the appended claims, when taken in conjunction with the accompanying drawings, in which:

FIG 1: -depicts the water seal trap comprising trap box (1), inlet pipe (2), outlet pipe (3), elbow 90o LR (4), bottom flange (5), gasket (6), blind flange (7), inlet and outlet flange (8), and M16 bolts with nuts and washer (9).

FIG 2: -depicts the process of waste water treatment using the water seal trap.

DETAILED DESCRIPTION OF THE INVENTION:
[0011] The invention described herein is explained using specific exemplary details for better understanding. However, the invention disclosed can be worked on by a person skilled in the art without the use of these specific details.

[0012] References in the specification to "one embodiment" or "an embodiment" means that a particular feature, structure, characteristic, or function described in connection with the embodiment is included in at least one embodiment of the invention. The appearances of the phrase “in one embodiment” in various places in the specification are not necessarily all referring to the same embodiment.

[0013] References in the specification to “preferred embodiment” means that a particular feature, structure, characteristic, or function described in detail thereby omitting known constructions and functions for clear description of the present invention.

[0014] Throughout the specification and claims, the following terms take the meanings explicitly associated herein unless the context clearly dictates otherwise. The meaning of "a", "an", and "the" include plural references. The meaning of "in" includes "in" and "on." Referring to the drawings, like numbers indicate like parts throughout the views. Additionally, a reference to the singular includes a reference to the plural unless otherwise stated or inconsistent with the disclosure herein.

[0015] The figures and protocols have been represented where appropriate by conventional representations in the drawings, showing only those specific details that are pertinent to understanding the embodiments of the present invention so as not to obscure the disclosure with details that will be readily apparent to those of ordinary skill in the art having benefit of the description herein.

[0016] As illustrated in Figure 1, the present water seal trap comprises elbows of predefined size, top plates of predefined size, flanges of predefined size, gaskets of predefined size, and fasteners of predefined size.

[0017] In general aspect the present invention provides a water seal trap device for vessels that can act as a barrier to protect the confined space of vessels from foul odor and gases.

This present invention is illustrated with reference to the accompanying drawings, throughout which reference numbers indicate corresponding parts in the various figures. These reference numbers are shown in bracket in the following description.

[0018] Referring to FIG. 1, a water seal trap device (100) for vessels in accordance with a preferred embodiment of the present invention is shown. In this preferred embodiment, a water seal trap device (100) for vessels includes trap box (1), an inlet pipe (2), an outlet pipe (3), an elbow 90o LR (4), a bottom flange (5), a gasket (6), a blind flange (7), an inlet and outlet flange (8), and M16 bolts with nuts and washer (9). Referring to table-1 which represents dimensions with respect to FIG. 1, D1 represents the outside diameter of the inlet pipe (2) and the outlet pipe (3), D2 represents outside diameter of trap body, NB represents nominal bore diameter of the inlet pipe (2) and the outlet pipe (3), L1 represents distance between the top of trap body (1) to bottom of inlet pipe (2) inside the trap body (1), L2 represents distance between trap body (1) protrusion which connects to the elbow 90o LR (4), L3 represents distance between bottom of inlet pipe (2) inside trap body (1) to the blind flange (7) and L4 represent distance between inlet flange (8) and inlet pipe (2).
Table-1

[0019] Referring to FIG. 1, the present invention provides a water seal trap device (100), wherein an inlet flange (8) is welded to inlet pipe (2) which is inserted in the trap body (1) fixed using welding, elbow part of inlet pipe is located inside trap body (1), a bottom part of trap body (1) is welded to the bottom flange (5) and is sealed shut using blind flange (7), a gasket (6) and M16 bolts with nuts and washers (9), an elbow 90o LR (4) is welded to a trap body (1) on opposite side of the inlet flange (8), at the end of elbow 90o LR (4) the outlet pipe (3) is welded, outlet flange (8) is welded to outlet pipe (3).

[0020] Referring to FIG. 2, the process of waste water treatment using the water seal trap is shown. Positioning of a water seal trap device for vessels (100) in accordance with a preferred embodiment of the present invention is shown in FIG. 2, the other components shown in FIG. 2 comprises inlet to water seal trap (a), water seal trap (100), storm valve (b), rod gearing (c), hull pad (d), outlet (e), rubber lip (f), water level (g). As shown in FIG. 2, inlet flange of water seal trap is connected to vessel internal water discharge piping system, the outlet flange of water seal trap (100) is connected to the inlet of storm valve (b), the outlet of storm valve (b) is connected to the hull pad (d) using pipe which directly open outside the vessel.

[0021] In an embodiment of the present invention, a water seal trap (100) is designated to act as a protection device that provides the barrier to protect the confined space from foul odor, and gases by maintaining a water column between two sides. The water inside the water seal trap serves as a liquid seal that helps keep outside gases from coming inside the ship’s confined space since a minimum of 150 mm water column is maintained inside the fitting. The fitting protects the ship by not letting harmful gases get inside it during nuclear/chemical/biological attacks. When one need to discharge waste/used water outside the ship, the said water seal trap is used.

[0022] In an exemplary embodiment of the present invention, the elbows are made using A234 WPB conforming to ANSI B16.9 and are long radius type, the top plates using carbon steel confirming to IS 2062 Gr. B/ DMR 249 A or equivalent, the flanges using carbon steel conforming to ASTM A105 or A515 Gr. 60 or equivalent, the gaskets using non-asbestos fiber conforming to BS 7531, and the fasteners using zinc plated conforming to IS 1367 or BS 3692. The parts are welded together as per ASME Sec IX using the GTAW / SMAW procedure.

[0023] In an embodiment of the present invention, the water seal trap is made using carbon steel, 90/10 CuNi, stainless steel, and copper.

[0024] The water seal trap is configured to act as a barrier to protect the confined space of a ship from foul odor and gases.

[0025] In yet another embodiment of the present invention, the water seal trap is to be hot dip galvanized as per BS 729 after fabrication.

[0026] In a preferred embodiment of the present invention, the water seal trap maintains a constant water column of 150 mm irrespective of pipe sizes.

[0027] In yet another embodiment of the present invention, the water seal trap is suitable for carbon steel pipes conforming to ASTM A106 Gr. B and flanges conforming to PN10 BS 4504 part 3.1.

[0028] In still another embodiment of the present invention, the water seal trap can be further used in other applications which include preventing sewer gases from entering the buildings, kitchen sinks and preventing ships during nuclear/ biological/ chemical war.

[0029] In another embodiment of the present invention, the water seal trap comprises of an inlet which is placed in horizontal manner, in order to fit into more confined space without affecting sealing criteria.

ADVANTAGES OF THE INVENTION
[0030] The present invention discloses a water seal trap device that can act as a barrier to protect the confined space of a ship from foul odors and gases.
[0031] The present invention is used to discharge wastewater from the ship.
[0032] A water seal trap device of the present invention maintains a constant water column of 150 mm irrespective of pipe sizes.
[0033] The present invention discloses a water seal trap device for vessels which requires less vertical space for installation without hampering its working by maintaining a water column of 150 mm.
,CLAIMS:1. A water seal trap device (100) for vessels comprising:
an inlet flange (8);
an inlet pipe (2) inserted in a trap body (1), wherein the inlet pipe (2) is welded to the inlet flange (8);
a trap body (1) having a bottom part welded to a bottom flange (5);
a gasket (6);
plurality of fastners (9); and
an outlet pipe (3) welded to an outlet flange,
wherein the said water seal trap device (100) is configure to act as a barrier protecting the confined space of a ship from foul odor and gases, and maintains a constant water column.

2. The water seal trap device (100) as claimed in Claim 1, wherein the bottom part of the trap body is welded and sealed using blind flange (7).

3. The water seal trap device (100) as claimed in Claim 1, wherein an elbow (4) of the inlet pipe (2) is welded to a trap body (1) at opposite side of the inlet flange (8).

4. The water seal trap device (100) as claimed in claim 1, wherein the inlet pipe (2) is positioned in horizontal manner in order to fit into more confined space without affecting sealing criteria.

5. The water seal trap device (100) as claimed in claim 1, wherein the said water seal trap device (100) is of material selected from carbon steel, CuNi, stainless steel, and copper.

6. The water seal trap device (100) as claimed in claim 1, wherein the device (100) further comprises of a storm valve (b), a rod gearing (c), a hull pad (d), an outlet (e), a rubber lip (f), a water level (g).

7. The water seal trap device (100) as claimed in claim 6, wherein the outlet flange is connected to the inlet of storm valve (b).

8. The water seal trap device (100) as claimed in claim 6, wherein an outlet of storm valve (b) is connected to the hull pad (d) using pipe which directly open outside the vessel.