JPH0417908Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is a funnel for filling low-temperature liquefied gas,
In particular, it relates to a funnel used to transfer cold liquefied gas from a large storage vessel at high pressure to a small transport vessel at atmospheric pressure.

(Conventional device) Conventionally, a conical cylinder is generally used as a funnel used to transfer low-temperature liquefied gas from a large high-pressure storage container to a small transport container at atmospheric pressure. When attempting to fill a small container with low-temperature liquefied gas, a large amount of vaporized gas is generated due to pressure changes and heat intrusion, and is introduced into the small container together with the low-temperature liquefied gas (liquid), increasing the internal pressure of the small container. The drawbacks were that small containers could not be sufficiently filled with low-temperature liquefied gas due to entrainment of droplets, and the filling speed was slow.

(Object of the invention) The object of the invention is to obtain a funnel for filling low-temperature liquefied gas that eliminates the above-mentioned drawbacks.

(Structure of the invention) The funnel for filling low-temperature liquefied gas of the present invention includes a large-diameter cylindrical container whose upper portion is cylindrical at least, and a liquid introduction nozzle that introduces the low-temperature liquefied gas in a direction along the inner peripheral surface of this cylindrical part. a small-diameter cylindrical liquid reservoir portion connected to the lower end of the large-diameter cylindrical container; a small-diameter pipe connected to the lower end of the small-diameter cylindrical liquid reservoir portion; a lid of the large-diameter cylindrical container; a gas discharge pipe that extends through the large-diameter cylindrical container and reaches the top of the small-diameter cylindrical liquid reservoir portion, and has a large number of through holes in its lower part; It is characterized by comprising a mechanism for regulating gas release.

(Example of idea) Embodiments of the present invention will be described below with reference to the drawings.

In the present invention, as shown in Figs.
A large diameter cylindrical part 1, a conical part 2 with a height of 75 mm, for example, whose cross-sectional area gradually decreases, connected to the lower part of this large diameter cylindrical part 1, and a conical part 2 connected to the lower end of this conical part 2. Small-diameter cylindrical liquid reservoir portion 3 whose cross-sectional area is sufficiently small, for example, 20 mm in diameter and 100 mm in height.
In order to insert it into a small container connected to the lower end of this liquid reservoir part 3, its cross-sectional area was further reduced. For example, a tube 4 having a diameter of 8 mm and a height of 300 mm, a lid 5 of the large diameter cylindrical part 1, and a pipe 4 having a diameter of 8 mm, for example, provided on the upper part of the large diameter cylindrical part 1 and oriented in a direction along the inner peripheral surface thereof. A liquid introduction nozzle 6 passes through the center of the lid 5 and passes through the large diameter cylindrical portion 1 and the conical portion 2, and its tip reaches the top of the small diameter cylindrical liquid reservoir portion 3. A 20 mm gas discharge pipe 7, a large number of small through holes or slits 8 formed in the lower part of the pipe 7, and a gas pressure adjusting pipe 7 interposed in the pipe 7 outside the large diameter cylindrical part 1. The valve 9 constitutes a funnel for low-temperature liquefied gas.

Since the low-temperature liquefied gas filling funnel of the present invention has the above-described structure, low-temperature liquefied gas (gas-liquid mixed phase) is introduced into the large-diameter cylindrical container 1 from the high-pressure large storage container through the liquid introduction nozzle 6. . There, the high-density liquid descends while rotating spirally on the inner wall of the large-diameter cylindrical portion 1, promoting gas-liquid separation between the liquefied gas and the vaporized gas, and the liquefied gas penetrates the lower part of the gas discharge pipe 7. It enters the small diameter cylindrical reservoir part 3 through a small hole or slit 8 and is introduced into a small container via a tube 4. Also, the vaporized gas is similarly released to the outside of the pipe 7 through the small through hole or slit 8, the pipe 7, and the gas pressure regulating valve 9, and no gas is introduced into the small container. Low-temperature liquefied gas can be filled completely and at high speed.

At this time, the opening degree of the gas pressure regulating valve 9 is adjusted appropriately to increase the filling speed of the low-temperature liquefied gas by the gas pressure inside the pipe 7, and the low-temperature liquefied gas that is released outside the pipe together with the gas is It is preferable to use it in such a way as to reduce gas droplets and prevent loss of low-temperature liquefied gas.

(Effect of the invention) As described above, according to the funnel for filling low-temperature liquefied gas of the present invention, gas generated when filling a small container with low-temperature liquefied gas is prevented from entering the small container, and sufficient filling is achieved. There are great benefits to becoming like this.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of the funnel for low-temperature liquefied gas according to the present invention.
FIG. 2 is a plan view thereof. 1... Large diameter cylindrical part, 2... Conical part, 3...
...Small diameter cylindrical liquid reservoir part, 4...Pipe, 5...Lid, 6
... Liquid introduction nozzle, 7 ... Pipe, 8 ... Small through hole, 9 ... Gas pressure adjustment valve.

Claims (1)

[Claims for Utility Model Registration] (1) A large-diameter cylindrical container with at least a cylindrical upper portion, a liquid introduction nozzle for introducing low-temperature liquefied gas in a direction along the inner peripheral surface of this cylindrical portion, and a small-diameter cylindrical liquid reservoir connected to the lower end of the small-diameter cylindrical container; a small-diameter pipe connected to the lower end of the small-diameter cylindrical liquid reservoir; a lid of the large-diameter cylindrical container; A gas release pipe that extends inside the large diameter cylindrical container and reaches the top of the small diameter cylindrical liquid reservoir portion and has a large number of through holes in its lower part; A funnel for filling low-temperature liquefied gas, characterized by comprising an adjusting mechanism. (2) The funnel for filling low-temperature liquefied gas according to claim 1, wherein the mechanism for adjusting the gas release is a valve interposed in the gas release pipe.