JPH0332480Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cooling system for a ship in an icy sea that is capable of supplying and discharging seawater for engine cooling without being blocked by ice chips in an icy sea.

As shown in Figure 1, ice-water vessels are equipped with a cooling water intake box 2 called a sea chest on the bottom 1 of the ship in order to take in seawater for engine cooling, just like other ships. The pump 3 supplies the seawater to the engine 4 to cool the engine 4. When such an ice sea vessel navigates in an ice sea, the surrounding ice is crushed into small pieces by the navigation of the ice sea ship, and the fine pieces of ice 5 generated by the crushing clog the eyes 6 of the sea top 2 and enter the sea top 2. The inflow of seawater is blocked, making it difficult to take in cooling water. For this reason, the sea thests of ships in ice-bound seas were designed to have a larger outer surface than the sea thests of ordinary ships in order to reduce the amount of time ice chips could clog their eyes. However, when the outer surface of the seat est is made large, the volume of the seat est increases, resulting in a large space loss. Moreover, even if the outer surface of the Sea Chest is made larger, the entire surface will eventually become clogged with ice chips, and in that case, an air or steam blowing device must be provided to blow out the ice that has clogged the eyes. .

The present invention solves the above-mentioned drawbacks of the conventional sea chest system for ice sea ships, and aims to provide a cooling system for ice sea ships that can supply and drain seawater for engine cooling without being blocked by ice chips in ice seas. This is the purpose.

The present invention provides a main cooling system using air-cooled water, which is composed of an air-cooled water cooler and an inboard cooling system connected to the air-cooled water cooler via a water pipe and a drain pipe equipped with a pump. A secondary system using seawater consisting of a short-circuit pipe that short-circuits the drain pipe at the inlet of the water cooler and the water supply pipe at the outlet, a discharge pipe that discharges the wastewater from the ship's cooling system into the sea, and an intake pipe that takes in seawater by the pump. The gist of the present invention is a cooling system for an ice-water vessel, which is equipped with a cooling system and is configured to be switchable between the sub-cooling system and the main cooling system.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 2 is an explanatory diagram of a cooling system for an ice-sea vessel according to the present invention. In the figure, 11 is an air-cooled water cooler installed on the deck 12. This water cooler 11 is surrounded by a duct 13 that opens in the direction A of the ship. An auxiliary blower 14 is provided at the upper front in the traveling direction A, and a damper 15 is provided below the auxiliary blower 14 to guide the cooling air sent from the auxiliary blower 14 to the water cooler 11.

16 is an inboard cooling system for cooling heat sources such as the main machinery, power generation engine, air conditioner, refrigerator, condenser, etc. inside the ship, and the inlet side of this inboard cooling system 16 and the outlet side of the water cooler 11 are A first valve 19 is connected to the water pipe 18.
is provided. The outlet side of the inboard cooling system 16 and the inlet side of the water cooler 11 are connected via a pump 20 with a drain pipe 21, and a second A third valve 23 is provided in the drain pipe 21 between the pump 20 and the inlet side of the water cooler 11. The water cooler 11, the water pipe 18,
The inboard cooling system 16, the drain pipe 21, and the pump 20 constitute a main cooling system.

24 is an intake pipe for taking seawater into the main cooling system, 25 is a discharge pipe for discharging wastewater from the main cooling system, and 26 is a short-circuit pipe for short-circuiting the inlet and outlet sides of the water cooler 11. The intake pipe 24 is provided in the drain pipe 21 between the second valve 22 and the pump 20, and the discharge pipe 25 is provided in the drain pipe 21 between the outlet side of the inboard cooling system 16 and the second valve 22. , water intake pipe 24
A fourth valve 27 is provided at the drain pipe 25, and a fifth valve 28 is provided at the discharge pipe 25, respectively. Further, the drain pipe 21 between the pump 20 and the third valve 23 and the cold water pipe 18 between the first valve 19 and the inlet side of the inboard cooling system 16 are connected by the short circuit pipe 26, and the short circuit The tube 26 is provided with a sixth valve 29 . A sub-cooling system using seawater is made up of the water intake pipe 24, a part of the drain pipe 21, the pump 20, the short-circuit pipe 26, a part of the water supply pipe 18, the inboard cooling system 16, and the discharge pipe 25. configured.

Next, the operation of the cooling system for ice-water vessels according to the present invention will be explained.

First, during the winter season when there are pieces of ice in the seawater, the first, second, and third valves 19, 22, and 23 are opened, and the fourth, fifth, and sixth valves 27, 28,
29 is closed, the main cooling system is composed of the water cooler 11, the water pipe 18, the inboard cooling system 16, the drain pipe 21, and the pump 20, and the water in the system is cooled by the water cooler 11.
This cooling water is passed through the water pipe 18 to the inboard cooling system 16.
to be sent to. The water heated in the inboard cooling system 16 is sent to the water cooler 11 by a pump 20 via a drain pipe 21.
circulates. The water cooler 11 is provided on the deck,
As the ship moves forward, it receives a headwind, and the water passing through the water cooler 11 is cooled by this wind. Note that when the ship is stopped, cooling cannot be performed with a headwind, so the auxiliary blower 14 generates wind, and the damper 15 directs this wind toward the water cooler 11 to cool the water in the water cooler 11.

In addition, when there are no pieces of ice in the seawater such as spring, summer, and autumn, the first, second, and third valves 19, 22,
23, and the fourth, fifth, and sixth valves 27,
28, 29 are opened, and the water intake pipe 24 and the drain pipe 21 are opened.
, the pump 20 , the short-circuit pipe 26 , a part of the water pipe 18 , the inboard cooling system 16 , and the discharge pipe 25 constitute a sub-cooling system using seawater, and the water intake pipe 24
Seawater is taken in by the pump 20, and the seawater is fed to the inboard cooling system 16 via a part of the drain pipe 21 and the short-circuit pipe 26. Seawater warmed by the inboard cooling system 16 is discharged into the sea via a portion of the drain pipe 21 and the discharge pipe 25.

The present invention provides a main cooling system using air-cooled water, which is composed of an air-cooled water cooler and an inboard cooling system connected to the air-cooled water cooler via a water pipe and a drain pipe equipped with a pump. A secondary system using seawater consisting of a short-circuit pipe that short-circuits the drain pipe at the inlet of the water cooler and the water supply pipe at the outlet, a discharge pipe that discharges the wastewater from the ship's cooling system into the sea, and an intake pipe that takes in seawater by the pump. A cooling system is provided, and the sub-cooling system and the main cooling system are configured to be switchable, so when navigating in seawater with ice chips, the main cooling system can be used, and when navigating in seawater without ice chips, the main cooling system can be used. In this case, a sub-cooling system can be used, which has the effect of completely eliminating the situation where the sea chest is blocked.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram of a conventional sea chest for an ice-sea vessel, and FIG. 2 is an explanatory diagram of a cooling system for an ice-sea vessel according to the present invention. 11...Air-cooled water cooler, 12...Deck,
16... Ship cooling system, 24... Water intake pipe, 25...
Discharge pipe, 26... short circuit pipe.

Claims (1)

[Scope of utility model registration request] A main cooling system using air-cooled water, consisting of an air-cooled water cooler and an onboard cooling system connected to the air-cooled water cooler via a water pipe and a drain pipe equipped with a pump; Equipped with a sub-cooling system using seawater consisting of a short-circuit pipe that short-circuits a drain pipe at the inlet and a water supply pipe at the outlet, a discharge pipe that discharges wastewater from the inboard cooling system into the sea, and an intake pipe that takes in seawater by the pump. A cooling device for an ice sea vessel, characterized in that the sub-cooling system and the main cooling system are configured to be switchable.