SU516870A1 - Low temperature container - Google Patents

Description

(54) LOW-TEMPERATURE CONTAINER

one

The invention relates to a cryogenic technique, in particular, to ng temperature vessels, containers for storing and transporting liquefied gases and biological preparations in a cooling medium.

A low-temperature container is known, which represents a structure of the type of a Dewar vessel, the interstitial space of which is evacuated for the purpose of thermal insulation. The neck of the container is closed with a stopper of thermally insulating material, for example, foam. The evaporability of the refrigerant in such a container should be as low as possible.

In addition to the quality of the thermal insulation of the interstitial space, factors such as the material and thickness of the container walls, the diameter and height of the neck, the structure and material of the plugs, supporting elements that unload the throats from bending loads,

In the known low-temperature containers, the throat is unloaded from bending loads in different ways. In some, they go along the path of increasing the thickness.

throat material, which leads to an increase in heat leakage through it. In others, supports are used - out of a material of low thermal conductivity in the lower part of the interwall space. Such a design also increases the heat influx into the internal cavity of the container with the refrigerant and increases the labor intensity of its manufacture.

A container is known that contains a pipe coaxially located in relation to the top of the pipe, which is separated from it by a corrugated sheet material. Such a structure relieves the throat from bending loads, however, it is labor-intensive manufacturing.

A low-temperature container is known that contains an outer and an inner shell, a throat and a cork placed in it, consisting of three layers of heat insulating material, which are placed in a casing of durable heat insulating material, which unloads the throat of the container from bending loads.

Such a tube construction causes

iioBi.i cinibiis toplotopok with ketitakireBP .niiii iiDBepxHocTeii casing bodies and throats, KpoNiO addition, the matoripl layers of cork to be completely hard, that h-. This is contrary to the requirements of teelo-copre.

The aim of the invention is

However, the stresses of the throat bending from these loads without deterioration ;; the thermal characteristics of the container as a whole.

This goal is achieved by performing the unloading element in the form of an axially extending rod equipped with a disc and between which layers of thermal insulation material are placed.

The core and discs should be made of a material with low thermal conductivity, for example, fiberglass.

The shape of the disks repeats the shape of the container stopper.

The drawing shows a container, longitudinal incision.

The container contains outward: nu 1 and inner 2 shells, neck 3 and cork 4 placed into it, into which rod 5 with disks 6 is inserted. Between the disks there are different layers 7 of heat insulating material.

The container works as follows.

When bending loads occur on the mouth of the container, the disks contact the inner surface of the neck. Looking at the loads, the disks transfer them to a rod, the thickness of which chooses 113 possible bending load conditions for a container of volume and weight data. The refrigerant vapor from the container is discharged through the through longitudinal grooves of the parts of the stopper and the disks that separate them (not shown). The total area of the cross section of the grooves (five or row grooves) is a small percentage of the cross section

container necks and therefore does not affect the effect of unloading the neck from bending loads.

Thus, the proposed smoker contains an uncomplicated device that is reliable in operation and allows unloading of the throat from bending loads without increasing the heat influx to its contents through the throat, since the unloading device with the throat takes place over a minimum area due to thick disk.

The proposed container may have a thin-walled neck, which reduces its weight and improves thermal performance. The thermal insulation material does not require increased strength, so a material with low thermal conductivity, such as foam, can be used.

Claims (2)

1. A low-temperature container containing an outer and an inner shell, a throat and a stopper placed in it, consisting of several layers of thermally insulating material and provided with a unloading element, characterized in that, in order to reduce the throat from bending loads and diminish; the heat supply to the throat, the unloading element is made in the form of a rod, passing along the throat axis, filled with discs, between which layers of insulating material are placed. 2. The container according to claim 1, in accordance with the fact that the core and the disks are made of a material with a low tenloconductivity, for example, of fiberglass.