JPS603440Y2 - Storage shelf for low-temperature liquefied gas evaporation suppression insulation material - Google Patents

Description

[Detailed description of the invention] The present invention stores granular heat insulating material, and when low-temperature liquefied gas leaks into the dike, the heat-insulating material is automatically and quickly scattered on the surface of the low-temperature liquefied gas. This invention relates to a storage shelf for low-temperature liquefied gas evaporation suppression insulation material.

If a fire occurs when a liquefied gas storage tank containing low-temperature liquefied gas such as LPG or LNG is damaged and the liquid accumulates inside the dike, the radiant heat of the fire will evaporate the low-temperature liquefied gas.

In order to suppress the evaporation of this low-temperature liquefied gas, if the low-temperature liquefied gas leaks into the dike, granular heat insulating materials such as spherical perlite balls are sprinkled on the liquid surface of the low-temperature liquefied gas, and the liquid surface is covered with A method of covering it with insulation material is being considered.

However, the reality is that no concrete measures have been proposed regarding where and how to store the granular heat insulating material and how to spray it on the liquid surface.

In view of this, the present invention was developed with the purpose of providing a storage shelf that can automatically and quickly spray granular heat insulating material onto the surface of the liquid when low-temperature liquefied gas leaks into the liquid barrier. It is.

Embodiments of the present invention will be described below with reference to the drawings.

A simple and inexpensive storage shelf body 4, which is formed from a frame body, a wire mesh 2, etc. and whose surface is covered with a moisture-proof vinyl sheet 3, is arranged at a required position inside the liquid barrier 1 surrounding the liquefied gas storage tank. , the interior of the storage shelf main body 4 is partitioned by a plurality of partition plates 5 tilted forward, so that a granular or powder heat insulating material 6 such as perlite balls can be stored inside the storage shelf main body 4,
A full-mesh door 8 whose lower end is pivotally connected to a hinge 7 and can be opened downward is disposed on the front surface of the storage shelf body 4. Usually, the door 8 is
The storage shelf main body 4 and the door 8 are fixed with a wire 9 to prevent them from opening, and the fastening portion of the wire 9 is made of a material that is brittle at low temperatures, such as tin, or rubber or plastic that is easily dissolved in low-temperature liquefied gas. A clamp 10 made of a material such as the like is provided to normally prevent the wire 9 from unraveling.

When low-temperature liquefied gas leaks from the liquefied gas storage tank, stays in the liquid barrier 1, and comes into contact with the clamp 10, the clamp 10 is destroyed and the wire 9 is unfastened.

On the other hand, since the weight of the granular heat insulating material 6 stored in the storage shelf main body 4 is applied to the door 8, when the fastening of the wire 9 is released, the door 8 automatically moves quickly using the hinge 7 as a fulcrum. The granular heat insulating material 6 inside the storage shelf main body 4 opens downward to the liquid barrier 1.
It is sprayed on the surface of the low-temperature liquefied gas that has leaked into the tank.

Therefore, since the surface of the liquid is covered with a heat insulating material, evaporation of the liquid can be suppressed not only when no fire occurs, but even when a fire occurs.

Furthermore, when the hinge 7 is attached to the upper part of the storage shelf and the wire 9 is unfastened, the lower part of the door 8 automatically opens quickly using the hinge 7 as a fulcrum, and the granular heat insulating material 6 inside the storage shelf main body 4 is It can also be spread inside the dike 1 by its own weight.

It should be noted that the present invention is not limited to the above-described embodiments, and it goes without saying that various changes can be made without departing from the gist of the present invention.

According to the storage shelf for low-temperature liquefied gas evaporation suppressing insulation material of the present invention, when low-temperature liquefied gas leaks, granular insulation material can be automatically and quickly sprayed on the liquid surface, so evaporation of the liquid is suppressed and the structure is Since it is simple, it can produce various excellent effects such as being inexpensive.

[Brief explanation of the drawing]

FIG. 1 is an explanatory side view of the present invention, and FIG. 2 is an explanatory perspective view of the present invention. In the figure, 1 is a liquid dike, 4 is a storage shelf body, 6 is a heat insulator, 8 is a door, 9 is a wire, and 10 is a clamp.

Claims (1)

[Scope of utility model registration request] A storage shelf body that stores granular or powder heat insulating material is installed at a required position within the dike, and a door that opens downward with the lower end as a fulcrum is pivoted to the storage shelf body to prevent leakage into the dike. 1. A storage shelf for a heat insulating material for suppressing evaporation of low temperature liquefied gas, characterized in that the door is fixed with a clamp made of a material that is destroyed by contact with low temperature liquefied gas.