JPS5819515B2 - Tank overflow device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides short overflow pipes with a low head, without extending each of the overflow pipes of a plurality of liquid cargo loading tanks installed below the deck that make up the rudder to the upper deck. Only the overflow pipe of the slop tank that accommodates the overflow liquid is extended to a long length with a high head, and the strength of the tank that can withstand the high head is limited to the slop tank.
The purpose is to reduce construction costs by making the tank a low-head structure.

Conventionally, when a tank containing a liquid substance is installed near the bottom of a ship, or when an overflow outlet from a tank is installed in a higher layer, the head increases in proportion to the height of the overflow pipe, and the tank structure becomes larger. The construction regulations stipulated that the tank should be strengthened to withstand the head, and it was necessary to strengthen all the materials, components, and construction methods used for the tank, which increased the construction cost. Ship owners and builders alike were struggling to come up with mitigation measures.

The present invention aims to solve this problem by installing a low-head overflow pipe in each tank, except for the slop tank, for storing liquid materials installed on the bottom of a ship, and connecting this overflow pipe to a common communication pipe. The terminal end of this communication pipe is opened to the slop tank, and a high-head overflow pipe is installed only in the slop tank.Thereby, only the slop tank can be constructed as a high-head structure, making it possible to reduce construction costs. be.

To explain an embodiment of the present invention with reference to the attached drawings, a plurality of tanks 1゜1 for loading liquid materials are installed on the bottom A of the ship,
A lead line C for dry cargo other than liquids is placed above this tank.
Alternatively, in a ship having a cabin, a short overflow pipe 2 with a check valve 3 is installed at the top of each tank 1, 1, and the end is opened in the slop tank 5, and a common pipe passing through each tank is installed. The short overflow pipe is connected to the communication pipe 4, and only the top of the slop tank 5 is equipped with an overflow vibro that reaches the upper deck B.
Reference numeral 7 is an air pipe that communicates with the outside air.

With this configuration, the liquid loading tank 1 on the bottom A of the ship
The overflow pipes 2, 2 of , 1 are short and have a low head, and the strength of each tank 1, 1 does not need to be a structure with a high head, and all of the materials, structural members, and construction methods that make up the tank are low. This is a new, excellent, and advanced technical invention that reduces construction costs and has divine benefits in terms of ship operation and construction.

[Brief explanation of the drawing]

The accompanying drawings are partial longitudinal cross-sectional views of a hull showing an embodiment of the present invention. 1... Liquid loading tank, 2... Short overflow pipe, 3... Check valve, 4...
...Communication pipe, 5...Slop tank, 6.
...Long overflow pipe, 7...
Air pipe, A...Bottom, B...Upper deck, C...Vessel.

Claims (1)

[Claims] 1. On ships equipped with multiple tanks for loading liquid materials at the bottom of the dry cargo ship, a short overflow pipe sealed with a check valve is placed at the top of each tank, and the end is opened in the slop tank. A tank overflow device characterized in that the short overflow pipe is connected to a common communication pipe that penetrates each tank, and the overflow pipe that reaches only the top of the slop tank is equipped with an overflow pipe that reaches the upper deck.