JPS6047784A - Anti-freeze method of handrail in vessel - Google Patents

Abstract

PURPOSE:To protect the handrail from freezing by heating the sea water used for cooling of main machine through exhaust gas then feeding through the pipe handrail on the deck. CONSTITUTION:The sea water sucked by a pump 4 through a sea chest 3 in the bottom 2 is used for cooling main machine 5 and lubricant then heated through a heat-exchanger 7 by exhaust gas fed through an exhaust pipe 6' in a stack 6. Heated sea water is fed through the pipe handrails 10, 10' on the deck 9. Consequently, the handrail section 10 is heated by high temperature sea water and protected from freezing.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for preventing icing on a handrail on the upper deck of a ship such as an ice-covered ship that sails on water.

BACKGROUND OF THE INVENTION In ships such as icy ships that navigate in water and sea, ice builds up on the handrails provided on the shell due to wave spray and the like. This kind of icing becomes more and more common as time passes, and its severity 1]) also increases. As a result, the center of gravity of the vessel is affected and safe navigation of the vessel is hindered.

At present, there is no easy or economical way to prevent the above-mentioned icing, and the crew scrapes it off with a crowbar or the like, and this work is extremely dangerous.

From the above-mentioned viewpoint, the present invention provides a method for preventing icing of handrails on ships, which can easily and economically prevent icing on handrails, and provides a method for preventing icing of handrails on ships. Jun?
After cooling the i7 oil cooler Tachibana, the water is heated by the exhaust heat of the main engine.
1. To prevent icing on the 1'J1'' handrail by supplying n'+ seawater into the pipe handrail on deck -1-. It is a) which shows the sign of Te.

Next, please refer to the figure if+'i for the method of this invention! <! L
I will explain.

FIG. 1 is a schematic side view showing an example of an apparatus for carrying out the method of the present invention, and FIG. 2 is a piping system diagram thereof. In the drawing, 1 is the hull, 2 chests are provided on the bottom of the ship, 4 is a seawater pump for cooling the main engine 5, etc., 6 is a chimney,
10.10' is a handrail made of wood and ino installed on deck 9.

In this departure method, a cooling seawater pump 4 sucks seawater from a two-chest 3 provided on the bottom 2 of the ship, and this seawater cools the main engine 5, lubricating oil cooler, etc.
A portion of the seawater that has reached a temperature of
The main engine 5 is guided to the heater 7 installed in the
heat exchange with the exhaust gas.

The seawater heated to high temperature through heat exchange by the heater 7 is
It was installed on deck 9''2 by pipe 8. Guide the handrail 10.10' from one end into the handrail 10.10' made of Jive. ],
After passing through 0', it is discharged. During this time, the handrails 10 and 10' are warmed by the high temperature seawater, so icing can be prevented.

Figure 2 is a piping system diagram, l1. 12. 13,1.
4 is a valve provided in a pipe through which seawater passes. If the temperature of the seawater sucked in by the seawater pump 4 is too low, the valve 11
．． By closing 12 and 13 and opening valve 14,
The seawater is transferred to the seawater pump 4, the main engine 5, and the lubricating oil cooler 5'.
, seawater pump 4, and the main engine 5 and lubricating oil cooler 5' raise the temperature to approximately 30°C. Thereafter, by opening valve 12 and closing valve 13, and adjusting the opening degrees of valve 1 and valve 14, a part of the seawater is heated.
i 7 and heated by the heater 7, the handrail, 10.
Send to 10'.

This invention is configured as described above, and after cooling the main engine, lubricating oil cooler, etc., the ice cubes are further heated by the exhaust gas heat of the main engine, and supplied into the pipe handrail on the deck. By heating the handrails, icing on the handrails can be definitely prevented.

Since the seawater is heated entirely by the exhaust heat of the main engine, there is no need for a separate heat source for heating, and the exhaust heat energy can be used effectively. Since the supply to the handrail is carried out by gravity from the heater installed at a high position in the chimney, there is no need for a pump to supply the handrail. effect is brought about.

[Brief explanation of the drawing]

Fig. 1 is a schematic side view showing an example of a device for carrying out the method of this invention, and Fig. 2 (external piping system diagram). -Chest, 4・
...For cooling! 11 Industrial water pump, 5...main engine, 6...
・Chimney, 6′...υμ trachea, 7... Heater, 8...
Pipe, 9...Deck, 10...Handrail, 11, 12, 13.
14... Valve. Applicant Nippon ATI Tube Co., Ltd. Agent Natsuo Shioya (and 2 others)

Claims (1)

[Claims] By further heating the seawater after cooling the main engine and lubricating oil cooler etc. with the exhaust gas heat of the main engine, and supplying the heated seawater to a high temperature into the pipe handrail on the armor, A method for preventing icing on a handrail in a ship, comprising: preventing icing on the handrail.