RU1781503C - Device for storing and carrying cryogenic liquid - Google Patents

Abstract

Scope: in cryogenic technology and can be used for filling vessels with cryogenic liquids and their subsequent storage to reduce losses of cryogenic liquid and time for filling a cryogenic vessel. SUMMARY OF THE INVENTION: a coil is installed on the surface of a cryogenic vessel with thermal contact, hermetically connected to the lower end in the form of a receiving neck with an overflow pipe in the lower part of the vessel, and the upper end to the volume of the vessel in its upper part, which ensures preliminary cooling of the vessels gradually from the bottom up by supplying cryogenic fluid through the coil through the inlet neck. The vessel is filled through the upper end of the coil with a vapor-liquid mixture. 1 s P. f-ly, 1 ill.

Description

The invention relates to cryogenic technology and can be used for filling vessels with cryogenic liquids and their subsequent storage.

The closest selected prototype is a device comprising a housing, an inner vessel, vacuum thermal insulation between them, an overflow pipe and a coil installed with thermal contact on the surface of the vessel, with the coil inlet located inside the vessel and the outlet at the top of the device.

The disadvantages of this device are the increased cryo-fluid flow rate and the long filling time of the vessel. This is explained by the fact that the cryogenic liquid flows directly through the overflow line onto the warm (not pre-cooled) surface of the inner vessel. As a result, the intensely gasified refrigerant moving along the coil in the section of the vessel, already filled with cryogenic liquid, cools and gasifies it, leaving it in the atmosphere in the vapor-liquid phase.

The aim of the invention is to reduce the consumption of cryo-liquids and shorten the charge time.

The goal is achieved in that in the device for storage and transportation of cryo-fluid, containing a housing, an inner vessel, a vacuum isolation between them, an overflow pipe and a coil installed with thermal contact on the surface of the vessel, the inlet of the coil is installed in the lower part of the vessel and connected to the overflow pipe , and the output is communicated with the inner cavity of the vessel.

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The inlet of the coil is made in the form of a receiving neck corresponding to the end of the overflow pipe.

The drawing shows an example of a specific embodiment of the device.

The device comprises an inner vessel 1 with a neck 2, an outer casing 3 on a support 4, a vacuum thermal insulation between them, an overflow pipe 6, an end installed in the volume of the lower part of the vessel 1 and a coil 7 installed with thermal contact over the entire surface of the vessel 1. Inlet of the coil 7 is installed in the lower part inside the vessel, connected to the overflow pipe 6 and is made in the ideal intake neck 8 corresponding to the end of the overflow pipe 6, and the outlet 9 of the coil 7 is in communication with the internal cavity of the vessel 1.

The device operates as follows.

Before filling the inner vessel 1, it is pre-cooled gradually from the bottom up to by supplying cryogenic liquid from the overflow pipe b through the coil 7. The feed is carried out when the corresponding end of the pipe 6 is sealed with the seat of the inlet neck 8 - the inlet of the coil 7. Moreover, cooling a warm vessel 1 to a lower temperature gradually from the bottom up, the cryogenic liquid in the form of a vapor-liquid mixture enters through the outlet of the coil 7 into the cavity of the vessel 1, filling it, where the section takes place tion mixture into fractions. The liquid fraction first fills the lower part of the cavity of the vessel 1, and then the entire remaining volume, and the vaporous fraction in the gap between the overflow pipe 6 and the neck 8 of the vessel 1 enters the atmosphere.

Thus, the filling of the vessel 1 is carried out when the temperature difference between the cryogenic liquid and the walls of the vessel 1 is practically absent. This, unlike the prototype, allows for more efficient use of the cryogenic liquid, reducing the unproductive emission of vapors and, with them, part of the cryogenic liquid into the atmosphere. This will reduce time.

refueling the vessel.

Claims (2)

1. A device for storing and transporting cryogenic liquid containing case, inner vessel, vacuum thermal insulation between them, overflow pipe and coil installed with thermal contact on the surface of the vessel, while the inlet of the coil is located inside the vessel, and the outlet is at the top of the device, characterized in that, in order to reduce the consumption of cryogenic liquid and reduce the time of filling, the inlet of the coil is installed in the lower part of the vessel and connected to an overflow pipe, and the outlet is communicated with the internal cavity of the vessel. 2. The device according to claim 1, characterized in that the input of the coil is made in the form the receiving neck corresponding to the end of the overflow pipe. 9 2