CN1565925A - Ballast water overflow displacement method for Cape of Good Hope type bulk cargo ship - Google Patents

Abstract

The invention relates to a ballast water overflow replacement method for Capesize bulk carrier which includes the following steps: a ballast pump pumps the seawater into the fore peak bottom or ballast well of No.6 cargo hold bottom via a ballast system, when the hydraulic pressure increases, the pumped seawater in the ballast well flows into the No.6 cargo hold, and the ballast water in the fore peak or the No.6 cargo hold flows into the overflow pipe, then flows into the No.1 ballast chamber or the No.6 ballast chamber, then flows into the sea via the ballast system or flows outboard via the outlet on the shipboard. The invention can prevent the ballast water from flowing onto the main deck and icing.

Description

Cape size bulk carrier ballast water overflow method of replacing

Technical field

The present invention relates to a kind of ballast water for ship method of replacing, relate in particular to a kind of cape size bulk carrier ballast water overflow method of replacing.

Background technology

Discover: many biological species can be survived in dissimilar ballast waters and accretion, even through after the route in several weeks.So external ballast water and sedimentary discharging might cause wherein harmful organism and germ to get involved the harborage area, thereby break the ecologic balance at this harbour.In order to prevent the pollution of the environment, many national requirements enter the boats and ships at this state harbour must take measures to limit the intervention of harmful organism and germ.International Maritime Organization's conference resolution A.868 (20) requires: ballast water is managed to reduce the propagation of harmful organism and germ etc. as far as possible.Wherein ballast water is replaced into most important measure.

Be the method that adopts the deck overflow to cape size bulk carrier ballast water overflow method of replacing at present, the ballast water of first Peak Tank and No. 6 cargo holds is replaced, and then other ballast tank is carried out the ballast water displacement by draining-water inlet method; Because adopting press over system is that ballast water is directly discharged outboard through the deck, when seasonal area carries out the ballast water displacement in the winter time, the icing phenomenon in deck just may appear.

Summary of the invention

The objective of the invention is to solve the problems of the technologies described above, a kind of cape size bulk carrier ballast water overflow method of replacing is provided, ballast water can not overflowed to outboard by the deck.

The objective of the invention is to realize by following steps:

With ballast pump seawater is thrown into first Peak Tank bottom by ballasting system or thrown the ballast well of No. 6 tank tops into from sea chest;

Hydraulic pressure constantly increases or throws into the ballast well of No. 6 tank tops bottom first Peak Tank, enters cargo hold No. 6, and No. 6 cargo hold hydraulic pressure constantly increases;

The ballast water of first Peak Tank or the ballast water of No. 6 cargo holds enter overflow pipe;

Flow to No. 1 ballast chamber or flow to ballast chamber No. 6;

Enter the sea or the discharge port by topside flows out outboard by ballasting system.

Compared with prior art, the invention has the beneficial effects as follows: avoided ballast water to flow directly to main deck and produced the phenomenon of freezing.

Description of drawings

Fig. 1 is the scheme drawing that first Peak Tank ballast water overflows to outboard;

Fig. 2 is the scheme drawing that the ballast water of No. 6 cargo holds overflows to outboard;

Wherein: ballasting system 1, first Peak Tank 2,3, No. 1 ballast chambers 4 of overflow pipe, 7, No. 6 ballast chambers 9 of 6, No. 6 cargo holds of ballast well, the discharge port 10 of topside.

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:

As seen from Figure 1: throw seawater into first Peak Tank 2 bottoms from sea chest by ballasting system 1 with ballast pump, along with first Peak Tank 2 bottom hydraulic pressure constantly increase, the ballast water of first Peak Tank slowly enters overflow pipe 3, flows to ballast chamber 4 No. 1, enters the sea by ballasting system again.

As seen from Figure 2: the ballast well 6 of seawater being thrown into No. 6 tank tops from sea chest by ballasting system 1 with ballast pump, enter cargo hold 7 No. 6, because No. 6 cargo hold 7 bottom hydraulic pressure constantly increase, the ballast water of No. 6 cargo holds slowly enters overflow pipe 3, flow to ballast chamber 9 No. 6, the discharge port 10 by topside flows out outboard again.

The present invention puts in ballast chamber No. 1 with the overflow pipe of first Peak Tank, the overflow pipe of No. 6 cargo holds puts in ballast chamber No. 6, respectively the ballast water of first Peak Tank and No. 6 cargo holds is overflowed to outboard by No. 1 ballast chamber and No. 6 ballast chambers, produce the phenomenon of freezing thereby avoid ballast water to flow directly to main deck.

Claims (1)

1, a kind of cape size bulk carrier ballast water overflow method of replacing is characterized in that: realize by following steps:

With ballast pump seawater is thrown into first Peak Tank bottom by ballasting system or thrown the ballast well of No. 6 tank tops into from sea chest;

Hydraulic pressure constantly increases or throws into the ballast well of No. 6 tank tops bottom first Peak Tank, enters cargo hold No. 6, and No. 6 cargo hold hydraulic pressure constantly increases;

The ballast water of first Peak Tank or the ballast water of No. 6 cargo holds enter overflow pipe;

Flow to No. 1 ballast chamber or flow to ballast chamber No. 6;

Enter the sea or the discharge port by topside flows out outboard by ballasting system.

Images