DESC:FORM 2

THE PATENTS ACT, 1970
(39 of 1970)
&
THE PATENT RULES, 2003

COMPLETE SPECIFICATION
(See Section 10 and Rule 13)

Title of the invention:
SCOOP FOR SEA WATER SUCTION

Applicant:
GOA SHIPYARD LIMITED
(A Govt. of India Undertaking-Ministry of Defence)
Having address as:
GOA SHIPYARD LIMITED
Vasco-Da-Gama, Goa - 403802, India

The following specification describes the subject matter and the manner in which it is to be performed.
CROSS-REFERENCE TO RELATED APPLICATIONS AND PRIORITY
[001] The present application claims priority to Indian Patent Application No. 201821043815 titled “Scoop for sea water suction” filed on November 21st, 2018, the entity of which is hereby incorporated by reference.
TECHNICAL FIELD
[002] The present disclosure, in general, relates to the field of Shipbuilding. More particularly, the present subject matter relates to Scoop for sea water suction.
BACKGROUND
[003] The machinery assembled on the ship are designated to perform in maximum capacity and operate continuously for long hours. The continuous working of the machines creates a large amount of heat within the ship. This heat generated increases the temperature within the ship causing discomfort to the on-board passengers and also reduces the performance of the machinery. Thus, cooling system are provided that circulates water and maintains temperature on the ship.
SUMMARY
[004] Before the present subject of a Scoop for sea water suction, are described, it is to be understood that this application is not limited to the particular system, and methodologies described, as there can be multiple possible embodiments, which are not expressly illustrated in the present disclosures. It is also to be understood that the terminology used in the description is for the purpose of describing the particular implementations, versions, or embodiments only, and is not intended to limit the scope of the present application. The summary is provided to introduce aspects related to a Scoop for sea water suction. This summary is not intended to identify essential features of the claimed subject matter nor is it intended for use in determining or limiting the scope of the claimed subject matter.
[005] In one embodiment, a scoop for sea water suction is disclosed. The scoop for sea
water suction may be composed of scoop. Further, a flap may be hinged to the scoop at one
end free to pivot about hinged axes. Furthermore, the flap may divert the sea water flow.

BRIEF DESCRIPTION OF DRAWINGS
[006] The foregoing detailed description of embodiments is better understood when read in conjunction with the appended drawings. For the purpose of illustrating of the present subject matter, an example of construction of the present subject matter is provided as figures; however, the present subject matter is not limited to the specific method and system disclosed in the document and the figures.
[007] The present subject matter is described detail with reference to the accompanying figures. In the figures, the left-most digit(s) of a reference number identifies the figure in which the reference number first appears. The same numbers are used throughout the drawings to refer various features of the present subject matter.
[008] Figure 1 illustrates a Scoop for sea water suction, in accordance with an embodiment of the present subject matter.
[009] Figure 2 illustrates the flap structure, which can pivot.
[0010] Figure 3 illustrates a computational fluid dynamics (CFD) for optimization of the shape of the scoop.
[0011] Figure 4 illustrates computational fluid dynamics for scoop structure with Flap structure.
DETAILED DESCRIPTION
[0012] Some embodiments of this disclosure, illustrating all its features, will now be discussed in detail. The words "comprising," "having," "containing," and "including," and other forms thereof, are intended to be open ended in that an item or items following any one of these words is not meant to be an exhaustive listing of such item or items, or meant to be limited to only the listed item or items. It must also be noted that as used herein and in the appended claims, the singular forms "a," "an," and "the" include plural references unless the context clearly dictates otherwise. Although a Scoop for sea water suction, similar or equivalent to those described herein can be used in the practice or testing of embodiments of the present disclosure, the exemplary, Scoop for sea water suction are now described.
[0013] Various modifications to the embodiment will be readily apparent to those skilled in the art and the generic principles herein may be applied to other embodiments for Scoop for sea water suction. However, one of ordinary skill in the art will readily recognize that the present disclosure of Scoop for sea water suction is not intended to be limited to the embodiments described but is to be accorded the widest scope consistent with the principles and features described herein.
[0014] As described above, the ship machinery installed on the ship operate continuously for long hours. This generates large amount of heat that may cause discomfort to the onboard passengers and can affect the effective functioning of the machineries. Thus, cooling system may be essential to remove the excess heat from the ship and maintain the temperature within the vessel.
[0015] Various scoop system for cooling have been proposed to maintain the temperature within the ship. But during high speed operation of ship, the sea water suction capacity of Main engine pump may severely reduce because of the formation of vortices in the scoop. Thus, the Scoop structure is unable to supply necessary quantity of water to meet Main engine cooling requirements. This in turn may result in overheating of engine and effect ships operational requirement.
[0016] The present disclosure may be directed to overcome one or more limitations stated above or any other limitation associated with the conventional arts. Disclosed herein are a scoop for sea water suction.
[0017] The present invention discloses a scoop for sea water suction provided with a flap hinges to the scoop and may be free to pivot about the hinged axes. The flap diverts the sea water flow and maintains the temperature within the vessel.
[0018] Before moving to the figures, the following table 1 lists the reference numbers and the respective elements illustrated in the figures, for the sake of easy readability. It should be noted that the below reference numerals have been utilized in the subsequent description of the present subject matter with reference to the figures.
Table 1
Reference number Description
001 Scoop
002 Flap
003 Grill Structure
[0019] Referring now to Figures 1, shows different cross-section and view of a Scoop for sea water suction. Further, refereeing to figures, figure shows a scoop (001), flap (002) and grill structure (003). The present disclosure may be described in accordance with a Scoop for sea water suction. However, this should not be construed as a limitation to the present disclosure, since the present disclosure may be applicable to other cooling system.
[0020] In one embodiment, the scoop (001) with a flap may be described. The flap (002) may be hinged to the scoop (001) and free to pivot about the hinged axes. Further, a grill structure (003) may be positioned at an inlet. Further, the grill structure (003) may prevent debris for entering into the scoop structure.
[0021] The scoop may be positioned at suitable position below the ship’s hull to facilitate water ingress into the scoop. Scoop assembly may be installed from the interior of the ship. The assembly bolted to the ship’s hull using studs on the hull opening on the inside of ship. This avoids any projection of bolts on the ships exterior hull thereby minimizing the hull drag. The chances of loosing of the scoop during the ships high speed operation may be avoided as the scoop is made integral part of the sea tube assembly having bolted inboard side.
[0022] Now refereeing to Figure 2, shows left and right channel closing positions of the flap. Further, it is observed that the flap structure is hinged and is free to pivot about the hinged axes. Thus, flap structure is used to divert the flow of sea water through the scoop. As observed from figures the shape of the flap is designed to close either of the cross-section to prevent back flow of the water and thus reduce the turbulence in the flow.
[0023] Further, refereeing to Figure 3, shows a computational fluid dynamics (CFD)-flow analysis carried out for the optimization of the shape of the scoop structure. From the CFD analysis may be observed that the flap arrangement provided inside the scoop may direct the sea water flow which results in the increase of static head pressure at the sea water suction.
[0024] Now refereeing to Figure 4, shows CFD analysis for scoop structure with Flap structure. The result obtained from the CFD analysis are summarized in Table 2.
TABLE 2 – Flow Characteristics comparison of Scoop Structure with and without flap
Model type Velocity (m/s) Scoop / tube outlet flow (m3/s) Scoop / tube outlet flow (m3/hr)
Scoop Structure without flap 15 0.01881 67.716
Scoop Structure with flap 15 0.020942 75.3912

[0025] Scoop is designed with optimum angle of entrance which helps the sea water to flow easily through the inlet.
[0026] Scoop is designed to provide sufficient positive static head pressure at the sea water suction in both forward and astern motion of the ship. Thus, number of scoops required for various machinery can be reduced. This in turn will reduce the structural weight and reduction in ship cost
[0027] Although implementations for Scoop for sea water suction have been described in language specific to structural features and/or methods, it is to be understood that the appended claims are not necessarily limited to the specific features of Scoop for sea water suction as described. Rather, the specific features are disclosed as examples of implementations of Scoop for sea water suction.
[0028] Exemplary embodiments for Scoop for sea water suction discussed above may provide certain advantages. Though not required to practice aspects of the disclosure, multiple advantages are provided by the following features.
[0029] Scoops are designed to perform with better efficiency in either forward or backward (astern) motion of the ship. In the present disclosure, scoop is designed to work with improved efficiency in both directions.
[0030] It is observed that efficiency of the scoops is reduced at higher speed of the ship. In the present disclosure, scoop is also designed to work with good efficiency at high speed of the ship. A flap structure is provided to divert the flow in the scoop to reduce internal vortices and thus increasing the efficiency of the scoop.
,CLAIMS:
1. A scoop (001) for sea water suction, wherein the scoop for sea water suction comprises,
a flap 002, wherein the flap 002 is hinged to the scoop 001 and free to pivot about the hinged axes, and wherein the flap 002 diverts the sea water flow; and
a grill structure 003, wherein the grill structure is positioned at an inlet of the scoop 001.

2. The scoop for sea water suction as claimed in claim 1, wherein the scoop is installed from the interior of the ship and wherein the assembly is bolted to the ship’s hull to facilitate water ingress into the scoop.

3. The scoop for sea water suction as claimed in claim 1, wherein the shape of the flap 002 is designed to close one of the cross-sections to prevent back flow of the water and reduced turbulence in the flow.

4. The scoop for sea water suction as claimed in claim 1, wherein the angle of the scoop is optimum at the entrance to enable flow of sea water easily through the inlet.