JPH052592B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to a floating tank, and more particularly to a floating tank in which a collection of storage tanks suspended on water is supported in a manner that prevents the tanks from coming into contact with each other.

``Conventional technology'' When stockpiling oil, etc., most oil is stored in tanks built on land, but in recent years, technology for storing tanks on the sea has begun to be adopted.

Conventional techniques for stockpiling oil on the sea include tankers full of oil, etc., and moored in or near the bay, or in coves surrounded by breakwaters, etc., where there are relatively few waves. There is a method of mooring a group of tanks storing oil, etc. on the sea in a floating state.

"Problems to be Solved by the Invention" However, with these technologies, while the former method has the advantage of being able to store storage tanks at arbitrary locations away from land, on the other hand, tanks for storage tanks are In addition, propulsion equipment is required,
In addition, in the case of the latter method, it is necessary to prevent the storage tanks from separating or coming into contact with each other.
There are problems in that the installation location is limited to the sea where there is little influence from waves, etc., and it requires dredging work, wharf construction work, etc.

The present invention effectively solves the above problems,
To provide a floating tank that can be installed at any location in the bay or in the near sea outside the bay, while preventing tank contact accidents due to the effects of waves, etc., and that can prevent oil, etc. from leaking onto the water. purpose.

``Means for solving the problem'' A tank assembly in which storage tanks are connected in a mesh shape by connectors, a torus pipe moored surrounding the tank assembly, and a tension force applied to each connector. It is constructed of a plurality of tension members that support the peripheral edge of the tank assembly on the inner peripheral part of the torus pipe in a state in which the tank assembly is held in place, and the movement of each storage tank is regulated by the tension acting on the connector. be.

``Embodiment'' Hereinafter, an embodiment of the present invention will be described based on the drawings. A plurality of storage tanks 1 floating on the sea are arranged in a lattice shape at mutual intervals by connecting devices 2 such as chains and wires. A connected tank assembly 3, and a torus pipe 6 surrounding the tank assembly 3 and moored to bits 4 on land and on the seabed by mooring cables 5 while floating on the sea.
and a tensioning member 7, such as a chain, which supports the inner circumferential portion of the torus tube 6 at a plurality of locations on the peripheral edge of the tank assembly 3 in a horizontally outwardly tensioned state. be. Each of the storage tanks 1 is provided with an inlet 8 for petroleum, etc., an outlet 9, and a vent pipe 10 with a flame arrester, and the torus pipe 6 is formed by connecting a pipe curved into an arc shape with a flange. It has a ring-shaped structure connected by welding etc.

In the floating tank configured in this way, the tank assembly 3 is pulled horizontally outward by a plurality of tension members 7, so that tension is applied to the connectors 2 of each storage tank 1. Since the movement of the storage tanks 1 in the horizontal and vertical directions is restricted, it is possible to prevent the storage tanks 1 from coming into contact with each other. In this case, the torus tube 6 floating on the sea acts as a breakwater to block waves and the like, and can maintain the inner water surface in a relatively calm state. Therefore, it can be moored at any position, such as on the calm sea in the bay, or in the near sea outside the bay, to prevent the influence of waves, etc., and maintain a high level of safety. On the other hand, the torus tube 6 has a plurality of tension members 7
Since compressive stress is applied by being pulled inward by the tank, its strength is increased, deformation, etc. are prevented, and the tank assembly 3 can be firmly supported. Further, in the event that oil or the like leaks inside the torus pipe 6, the floating torus pipe 6 acts as an oil fence and can prevent leakage to the outside sea.

The tank assembly 3 has a configuration in which the storage tanks 1 are connected in a lattice shape by the connectors 2 in the above-mentioned embodiment, but it is possible to apply tension to the connectors 2 by the tension member 7. If so, they may be connected in various mesh shapes such as a triangular shape, a hexagonal shape, and a radial shape with respect to the center of the torus tube 6.

"Effects of the Invention" As explained above, according to the floating tank of the present invention, the following effects can be achieved.

(i) Tension is applied to each connector by a plurality of tension members that support the tank assembly on the torus pipe,
Since the movement of each storage tank is regulated, it is possible to prevent the storage tanks from coming into contact with each other, and it is possible to maintain a high level of safety at any location, such as in the bay or in the near sea outside the bay.

(ii) By pulling the torus pipe inwardly by a plurality of tension members, compressive stress is applied to the torus pipe, increasing its strength and firmly supporting the tank assembly. .

(iii) By floating the torus tube on water,
The torus tube can be used as a breakwater and an oil fence to further improve safety.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a front view, FIG. 2 is a sectional view taken along the line --- in FIG. 1, and FIG. 3 is a longitudinal sectional view of a storage tank. DESCRIPTION OF SYMBOLS 1... Storage tank, 2... Connector, 3... Tank assembly, 5... Mooring cable, 6... Torus pipe, 7... Tension member.

Claims (1)

[Claims] 1. A tank assembly consisting of a plurality of petroleum, etc. storage tanks floating on water connected in a mesh shape by connectors, a torus pipe moored surrounding the tank assembly, and tension applied to each of the connectors. A floating tank comprising a plurality of tension members that support the peripheral edge of the tank assembly on the inner peripheral part of a torus pipe in a state where the tank assembly is in a state of being acted on.