SU766955A1 - Ship for transporting explosion hazardous liquid cargoes - Google Patents

Description

(54) SHIP FOR TRANSPORTATION OF EXPLOSIVE-LIQUID CARGO

I

The invention relates to shipbuilding, in particular to ships for the transport of explosive liquid cargo.

A ship for the transport of explosive liquid cargo is known, comprising an upper deck, underdeck ballast tanks and cargo tanks with pumping units consisting of submersible pumps connected to electric drives by means of shaft drives passing through seal seals 1.

The disadvantage of the vessel is insufficient safety in operation.

The purpose of the invention is to increase the safety in operation of the vessel.

The goal is achieved by the fact that the vessel is equipped with an additional fresh water tank above the upper deck, and fences are made in the underdeck ballast tanks, each of which has an actuator mounted, one of the pumps, each cofferdam being communicated by pipeline to one From additional tanks with fresh water, holes are made in the walls of each cofferdam in which seal glands are mounted and shaft lines of the pump unit are placed.

FIG. 1 shows the vessel, the cross section; in fig. 2 shows the shaft-laying unit, section A-A in FIG. one.

The vessel contains a hold-tank 1, underdeck ballast tanks 2 with enclosure 3 placed inside. In the hold-tank 1 there are cargo wells 4 with submersibles connected to it

10 cargo pumps 5, connected by shafting 6 with electric drives 7.

Each shafting 6 is located in the corrugation 8 of the transverse bulkhead and at the exit from the bilge-tank 1 has glands 9 installed in a hole made in the wall of the cofferdam 10 mated to the partition 3 and filled with fresh water from the additional tank 11 located above the deck .

20 For loading-unloading, the bilge-tank 1 is provided with side-by-collectors 12 connected to loading pipelines 13, unloading 14, to the cargo preheater 15. The additional tank 11 is equipped with a pointer glass and a level indicator sensor 17. The vessel is operated as follows. The explosive liquid cargo taken as a cargo through the manifolds 12 through the loading pipeline 13 is poured into the hold tank to level a and so transported. At. unloading the vessel at the port of destination, products are loaded through the cargo well 4 by a submersible cargo pump 5 driven by a drive 7 placed in the bulkhead 3 of the ballast tank 2. The drive 7 drives the pump 5 by means of a shaft 6 passing through the transverse bulkhead through the corrugation 8 glands 9 and cofferdam 10, which is filled with fresh water from tank 11. Pump 5 through discharge pipeline 14 loads it to collectors 12 and further to the shore. If it is necessary to heat up at sea, the cargo pump 5 is turned on and the cargo through the discharge pipeline is fed to the heater 15. The heated cargo through the loading pipeline 13 returns to the hold tank 1, where it gives heat to the rest of the cargo. In order to prevent cargo leaks from the holdpipe through the gland 9 of the shafting 6, the latter is located in the cofferdam 10. To control the condition of the gland 9 and prevent the cargo from entering the cofferdam 10, the latter fills with water and with the help of the tank 11 it maintains hydrostatic water pressure greater than of the load post over the gland 9. In the event of a leakage, the gland 9 begins to pass water

/ a 76 16

Claims (1)

,. / 6 V load, which is easily detected by the indicator glass 16 on the tank 11. When water leaks from the tank 11, the sensor of the detector 17 signals this to any room of the vessel where there is a constant watch, for example, to the central control room or wheelhouse (not shown). Claims An explosive liquid cargo ship comprising an upper deck, underdeck ballast tanks and cargo tanks with pumping installations including submersible pumps connected to electric drives by means of shafts passing through sealing glands, characterized in that operation, the vessel above the upper deck is equipped with an additional tank with fresh water, and in the underdeck ballast tanks there are fences, in each of which there are Rowan drive one of the pumps, wherein each said cubicle provided with a cofferdam, communicated via a conduit with a supplementary tank with fresh water, the walls of each dam are provided with openings in which are mounted seals sealing and pump device disposed shafting. Sources of information taken into account in the examination 1. Rabey I. L. and others. Special systems of oil tankers. “Shipbuilding. L., 1966, p. 270-271, fig. 116 (prototype). Aa fe, 2