JPH0137704Y2 - - Google Patents

Description

[Detailed explanation of the idea] This invention relates to the structure of a liquefied gas transfer device.

It is desired that this type of transfer device be able to quickly pressurize and stop liquefied gas, be easy to handle, and be safe.

The configuration of a conventional liquefied gas transfer device is shown in FIG. Reference numeral 1 designates a gas cylinder compressed and containing gas of the same type as liquefied gas or helium gas, 2 a liquefied gas storage container, and 3 a liquid receiving container. To transfer the liquefied gas L in the liquid storage container 2 to the liquid receiving container 3, a pressurizing pipe 5 is inserted into the liquid storage container 2 from the gas cylinder 1 via the pressure reducing valve 4, and the liquefied gas L is pressurized. be exposed. 6
is a gas seal. The pressurized liquefied gas is transferred to the liquid storage container 3 through a liquid sending pipe 7 provided within the diameter of the pressurizing pipe 5.

In this device, when the liquid supply is stopped, the release valve 8 provided in a part of the pressurizing pipe 5 is opened to release it to the atmosphere in order to lower the internal pressure of the liquid storage container. At this time, the vaporized gas is blown out. There was a drawback that it was dangerous because it was released.

The object of this invention is to provide a liquefied gas transfer device that eliminates the above-mentioned drawbacks and allows liquid transfer to be carried out safely and easily. In order to achieve this objective, the configuration of the transfer device was as follows. That is, a bypass line was provided in the liquid sending pipe in the conventional transfer device, and a bypass valve was provided in this bypass line.

Examples of this invention will be described below based on the drawings. FIG. 2 is a block diagram of a liquefied gas transfer apparatus which is an embodiment of this invention, and parts common to those in FIG. In this device, the pressurizing pipe 15 is not provided with a release valve, but a bypass pipe line 9 is provided that leads from the pressurizing pipe 15 to the liquid feeding pipe 7, and a bypass valve 10 is connected in the middle of the bypass pipe line 9.

By constructing the bypass line 9 with, for example, a thin stainless steel pipe to reduce heat conduction, even when transferring cryogenic liquefied gas, an expensive and heavy cryogenic valve can be installed in the bypass valve 10. Instead, you can use a normal temperature valve that is inexpensive, lightweight, and easily available.

When sending liquid in this device, the bypass valve 10 is kept closed, and the inside of the liquid storage container 2 is pressurized with a gas similar to the liquefied gas or helium gas through the pressurizing pipe 5 from the gas cylinder 1 through the pressure reducing valve 4. As a result, the liquefied gas L is sent to the liquid receiving container 3 through the liquid sending pipe 7. When the required amount of liquefied gas accumulates in the liquid receiving container 3 and the liquid supply is stopped, the bypass valve 10
When the valve is opened, the pressure in the pressurizing pipe 15 is transmitted to the liquid receiving container 3 via the liquid sending pipe 7 through the bypass pipe line 9, and the pressures in the liquid storage container 2 and liquid receiving container 3 become equal, and the liquid is sent. stops.

With this device, when stopping liquid feeding, the liquefied gas in the liquid storage container is not released into the atmosphere, but instead escapes into the liquid receiving container, making it possible to safely stop the liquid feeding. Become.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a conventional liquefied gas transfer device, and FIG. 2 is a block diagram of a liquefied gas transfer device according to this invention. 2: liquid storage container, 3: liquid receiving container, 7: liquid sending pipe,
9: bypass pipe line, 10: bypass valve, 15: pressurizing pipe, L: liquefied gas.

Claims (1)

[Claims for Utility Model Registration] 1. A liquefied gas storage container into which a pressurizing pipe for supplying pressurized gas is inserted, a liquefied gas receiving container, and communication between the liquefied gas storage container and the liquefied gas receiving container. A liquefied gas transfer device comprising: a liquid feeding pipe connected to the liquefied gas storage container to forcefully feed liquefied gas pressurized by the pressure gas in the liquefied gas storage container to the liquefied gas receiving container; 1. A liquefied gas transfer device, comprising: a bypass pipe connecting the bypass pipe; and a bypass valve provided in the middle of the bypass pipe. 2. Utility Model Registration Scope of Claim 1. The liquefied gas transfer device according to claim 1, wherein the bypass pipe is made of a thin pipe made of a material with low thermal conductivity.