SU602741A1 - Cryogenic vessel - Google Patents

Description

one

The invention relates to a cryogenic technique, more specifically to containers for storing and transporting such cryogenic liquids such as liquid oxygen, nitrogen, argon, helium, hydrogen, etc., and can be used in cryosorbocyol vacuum pumps.

Vessels for low-boiling liquefied gases are known, in which dp create and maintain vacuum in the insulating cavity use adsorbents (active carbons, zeolites, silica gel). Such vessels have a heat-insulated internal container (vessel), outer casing, adsorption pocket, located on the outer surface of the internal vessel ij. The adsorption pocket is usually made of metal) / sheet welded or attached to the inner vessel. To access the gas to the adsorbent, the pocket surface is perforated. The insulating material is directly attached to the adsorption pocket. The regenerated adsorbent is poured into a pocket before mounting the thermal insulation. The process of mounting the insulation and assembling the vessel takes a long time (from several hours to two days). During this period of time, the adsorbent, open to the access of air, ycftevaet absorb some components of the air (first of all. Water vapor) and at the same time reduce its capacity. It is not possible to restore the capacity of the adsorbent during the evacuation of the vessel, since for constructive reasons the vessels cannot be heated to a high temperature (400 s), which is necessary for the regeneration of the adsorbent. This leads to a reduction in the period in which the adsorbent maintains the desired vacuum in the insulating cavity. As a result, the isolation efficiency decreases and the cryogenic fluid loss increases.

A cryogenic vessel is known, comprising an inner vessel, a casing, a heat insulating material and a breakable bag (beating capsule) with an active getter, which is in a vacuum. The package is located in a deformable chamber, which is said to

iopopion space 2}. In this vessel, the capsule with the absorber (getter) is placed in the process on the vessel shell and is broken mechanically. The getter absorbs gases at positive temperatures and is therefore located on the vessel's shell. The adsorbent used to create and maintain vacuum in the insulating cavity of a vessel, unlike irerrepa, is able to absorb gases under vacuum conditions only at low temperatures, and therefore the chamber with the adsorbent must be placed on the inner vessel under insulation. Open (it is very difficult to communicate with an insulating cavity to an adsorption chamber; after installation of isop di it is very difficult, since it is possible to damage the insulation. As a result, the effectiveness of the insulation will decrease.

With a chain of efficiency preservation, absorb And high; vacuum by eliminating the ingress of the absorber into the insulation B of the proposed cryogenic vessel and the package from the thinnest film of a climatic foil that breaks in the vacuum of the vessel. Shket equipped with a mesh cover installed in it.

The use of a rupture package simplifies the design and manufacturing technology of cryogenic vessels, eliminates premature testing of the absorber, and therefore increases the duration of maintaining a high vacuum in the insulation fraction, increases the efficiency of the insulation, increases the duration of operation of the cryogenic vessels before re-evacuation.

FIG. 1 shows a general view of the vessel; FIG. 2 - section of the package.

The vessel consists mainly of the inner vessel 1, the ear 2, the heat insulating material 3 and the bag 4, the location of which is preferably on the upper bottom of the vessel around the neck. At the same time, the bag is located close to the exhaust port, which ensures its more reliable and rapid rupture during vacuuming.

Its upper position avoids sagging, and the snug fit of the bag to the inner vessel provides better cooling of the absorber.

The bag is made of foil or film 5 with a thickness of less than 0.2 mm. The thickness is determined from the conditions of sufficient strength of the package under the conditions of storage and provision (breaking it when creating a vacuum in the insulating cavity. The absorber 6 is placed in a bag in a fabric cover 7 or a metal mesh that protects the adsorbent from spilling out when the bag is broken. backfilled into a bag / ground at a regenerating regeneration temperature. In hot form, the absorber is placed in the sheath 7 and the bag 5, the latter is then sealed or sealed. The bag is placed on the inner vessel in front of By isolating the insulation. During the vacuuming of the isolation space, package 5 is ruptured as a result of the pressure difference between the JB package and in the vessel and the absorber communicates with the insulation cavity. The absorber is further treated during the vacuuming of the vessel, which also increases its capacity.

Claims (2)

1. US patent number 2900800, class. 62-45, 1959. 2. The patent of Germany No. 1134398, cl. 17 g, 4 1960. s ----- 0.0 V