SU1693330A1 - Bioproducts storage cryogenic device - Google Patents

Abstract

The invention relates to a cryogenic technique, in particular to devices for storing bioproducts using liquefied gases. The purpose of the invention is to improve the usability of the cryogenic device while reducing the consumption of cryo-liquid, improving reliability and safety during operation. The bio-storage 1, consisting of a row of Dewar vessels 2, is connected to a compensating vessel by an overflow pipe 4 and is equipped with a cryogenic distribution system in a bio-storage having

Description

The invention relates to cryogenic equipment, in particular, to devices for storing bioproducts using liquefied gases (cryoliquids), and can be used mainly at semen wound stations of breeding producers.

The aim of the invention is to improve the usability of the cryogenic device while reducing the consumption of cryo-liquid, improving reliability and safety during operation.

FIG. Figure 1 shows the spatial hema of a cryogenic storage device for products; in fig. 2 - the principal structural diagram of the device.

A cryogenic device for storing bioproducts contains bio storage 1, consisting of a number of Dewar vessels 2, in which bioproducts are placed, connected to a compensating vessel 3 with overflow pipe 4, device 5 for maintaining the level of cryogenicity in the bio storage, the cryofluid distribution system in the bio storage, including an intermediate cryogenic tank 6 communicated with a compensating vessel 3 by means of an overflow pipe 4 with a choke 7 installed on it, and with 2 Dewar vessels - through an additional the overflow pipe 8, the collectors 9 connected to it, connected through shut-off valves by Yuskriopatrubka 11, mounted on the throats 12 of the Dewar vessels 2, the intermediate cryogenic tank 6 being installed in such a way that the zone of its connection with the additional cryogenic pipeline 8 lies in the same plane with the axes of this pipeline, collectors 9, cryopipes 11 and the estimated level of cryogenicity (height H, fig. 2) in Dewar vessels 2, while fixture 5 for maintaining the level of cryofluid is placed in between of the internal cryogenic tank 6 and connected to the throttle 7. The thermal insulating cover 13 serves to access the Dewar vessel 2 when working with bioproducts and to limit external heat fluxes from the throat side.

The initial filling of vessels 2 of the Dewar with the tanker is carried out with open shut-off valves 10 on those vessels in which the laying of bioproducts is supposed

for storage, with drainage of cryofluids into the atmosphere through open shelves of 12 vessels.

In the storage mode of bioproducts in the cavity of an intermediate cryogenic tank

6, an additional overflow pipe 8, collectors 9, open shut-off valves 10, cryopipes 11 and Dewar vessels 2 at atmospheric pressure in the cryo-liquid distribution system provide a two-phase medium with an interface (cryo-liquid level) located approximately in the middle of the system volume and along its structural elements and therefore having a maximum area

mirrors cryoliquid. External heat fluxes in the structural elements are absorbed by evaporation of the cryo-liquid from its extremely developed mirror surface into the gas volume of the distribution system, while the evaporation rate of the cryo-liquid corresponds to the intensity of the heat sink. Under actual (normal) conditions of operation of storage stations, these processes vary slowly, and therefore the determined consumption of cryo-liquidity is established. The constant level of cryo-liquid in the distribution system is maintained by the device 5, which controls the throttle 7 on the overflow pipe 4. This happens

continuous process of self-cooling of the cryogenic device, provides virtually stationary stratified flow regime of cryo-liquid without flow rate pulsations, which increases the reliability of the cryogenic device as a whole and

guarantees its safe operation.

Cryogenic device design

realizes batch storage of large

quantities of expensive bioproduct,

maintaining the level of cryo-liquidity in all Dewar vessels using a single device, which eliminates the likelihood of loss of the entire amount of bioproduct in emergency situations, for example, due to a leakage of screen-vacuum insulation of the Dewar vessel, increases the convenience of working with vessels corresponding to the anthropological parameters of the operator , reduces the consumption of cryo-liquid, since only such a number of Dewar vessels is used, which is necessary for the storage of the available bioproduct, and the work The extraction of the product is carried out with only one vessel, therefore the unproductive evaporation of cryofluid is extremely reduced.

Claims (1)

The internal volume of Dewar vessels is used more fully due to the lack of devices in them to maintain the level of cryo-fluidity, which creates additional technological advantages and convenience of work, especially with frequent immersion or extraction of the bioproduct. Claims of the Invention A cryogenic device for storing bioproducts containing a bio-storage unit connected to a compensating vessel by means of an overflow pipe, an apparatus for maintaining the level of cryo-liquidity in the bio-storage facility, that, in order to increase ease of operation while reducing the cryo-liquid consumption, increase reliability and safety during operation, the device is equipped with a cryo-liquid distribution system in the bio-storage, the latter consists of a number of Dewar vessels, and the cryo-liquid distribution system contains an intermediate cryogenic tank communicated with a compensating vessel through a pipe with a throttle installed on it, and with vessels Dyuira - by means of an additional overflow pipeline, connected to it by collectors connected through shut-off valves with cryo-tubes installed on the hornboxes Dewar vessels, and the intermediate cryogenic capacity is set to that the zone of its connection with the additional pipeline lies in the same plane with the axes of this pipeline, the collectors, the cryopipe and the estimated level of cryo-liquid in the Dewar vessels, and a device for maintaining the level of cryo-fluid is placed in an intermediate cryogenic tank and is connected to a choke. J VSYSVW4 V4 fi & 2