JP5460071B2 - Pressure-resistant container with siphon tube - Google Patents

Description

  The present invention mainly relates to a pressure-resistant container with a siphon tube that accommodates a liquefied carbon dioxide mixed gas.

A sterilizing gas in which liquefied ethylene oxide and liquefied carbon dioxide are mixed and a food preserving gas in which ethyl alcohol and liquefied carbon dioxide are mixed must be taken out in a liquid state because the active ingredient is dissolved in liquefied carbon dioxide. In the case of carbon dioxide used for cooling, liquid carbon dioxide needs to be taken out because it is cooled by latent heat of vaporization when the liquid carbon dioxide is vaporized. For this reason, these liquefied gases filled in the high-pressure gas container are taken out in a liquid state using a container valve with a siphon tube while the container is upright.
When filling carbon dioxide, a metal pipe is used because the siphon tube has a very high filling pressure of 4 to 8 MPa. In recent years, stainless steel pipes have been used in order to prevent the occurrence of corrosion, polymerization, chemical reaction, rust, particles and the like due to the properties of the gas and liquid to be filled.

For this reason, it is important that the siphon tube reaches the bottom of the high-pressure gas container. For example, if the siphon tube is short, the entire amount of liquid cannot be taken out from the container. May prevent the chitin and container valve from being supported by the bottom of the container, or excessive pressure will be applied to the tip of the siphon tube, scratching the protective film on the inner surface of the high pressure gas container and the container body, causing corrosion and rust from that part. There is.
Even if the high-pressure gas container has the same internal volume from the same manufacturer, there is a difference in the height of the container, so the length of the siphon tube must be adjusted for each container, but this work is very laborious.
There is also a method of attaching a nozzle whose length can be adjusted to the tip of the siphon tube. However, since carbon dioxide dissolves lubricating oil and the like very well, no lubricant can be used at the connection between the nozzle attached to the tip and the siphon tube. For this reason, it is difficult for the siphon tube to be smoothly contracted due to the frictional resistance, scratching the inner surface protective film of the container, or a phenomenon of liquid leaking from the gap of the connecting portion.

JP-A-8-4998

    In view of the above-described conventional drawbacks, the present invention can reliably position the tip of the siphon tube on the inner bottom surface of the pressure vessel main body to take out all the liquefied gas, and damage the inner bottom surface of the pressure vessel main body. It is an object of the present invention to provide a pressure-resistant container with a siphon tube that does not take time to install a siphon tube.

The above and other objects and novel features of the present invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings.
However, the drawings are for explanation only and do not limit the technical scope of the present invention.

In order to achieve the above object, the present invention provides a pressure vessel with a siphon tube comprising a vessel valve with a siphon tube detachably attached to a mouth portion of a pressure vessel body capable of accommodating a pressure fluid. Is a stainless steel material with an outer diameter of 10 mm or less that will not be crushed by the pressure inside the pressure vessel body. The tip of the pressure vessel body will be pushed by the axial pressure when a vessel valve with a siphon tube is attached to the mouth. 3 or more bent portions are formed so that the dimension in the axial center direction contracts by contacting the inner bottom surface of the pressure vessel main body, and the bent portions are bent so that the inner angle is 120 to 170 degrees. This constitutes a pressure vessel with a siphon tube.

  As is clear from the above description, the present invention has the following effects.

(1) In a pressure-resistant container with a siphon tube provided with a container valve with a siphon tube that is detachably attached to the mouth of the pressure-resistant container body capable of containing a pressure fluid, the siphon tube is a pressure in the pressure container body. A stainless steel material with an outer diameter of 10 mm or less that does not collapse, and the tip is the inner bottom surface of the pressure vessel body due to the pressing force in the axial direction when a vessel valve with a siphon tube is attached to the mouth of the pressure vessel body 3 or more bent portions are formed so that the axial dimension shrinks in contact with the inner surface, and the bent portions are bent so that the inner angle is 120 to 170 degrees. By attaching a container valve with a siphon tube to the mouth of the pressure-resistant container body from the state in contact with the inner bottom surface of the tube, the pressure applied to the siphon tube during installation causes the tip of the siphon tube to withstand pressure Bending at three or more bent portions in contact with the inner bottom surface of the vessel body, it can be contracted.
Therefore, since the tip part of the siphon tube is located on the inner bottom surface of the pressure vessel main body, the entire amount of the liquefied gas in the pressure vessel main body can be taken out.

(2) Since the siphon tube is bent by the pressing force when the container valve is attached according to the above (1), the siphon tube comes into contact with the inner bottom surface of the pressure vessel body by setting the siphon tube to be long at the time of attachment. Can be installed in condition.
Therefore, anyone can easily perform the operation of attaching the container valve with the siphon tube to the pressure-resistant container body.

(3) According to the above (1), since three or more bent portions are formed in the siphon tube, even a siphon tube that does not collapse under high pressure can be easily bent and contracted in the axial direction.
Therefore, it is possible to efficiently prevent the inner bottom surface of the pressure vessel main body from being damaged at the tip portion of the siphon tube.

(4) By forming three or more bent portions according to (1), it is possible to use the same material and the same inner and outer diameter dimensions as the siphon tube used in the conventional pressure vessel.

The longitudinal cross-sectional view of the 1st form for implementing this invention. Explanatory drawing of the siphon tube of the 1st form for implementing this invention. Explanatory drawing which shows the attachment initial state of the container valve of the 1st form for implementing this invention. The A section enlarged view of FIG. Explanatory drawing of the state to which the container valve of the 1st form for implementing this invention was attached. The B section enlarged view of FIG. Explanatory drawing of the siphon pipe | tube main body of the 1st form for implementing this invention. The longitudinal cross-sectional view of the 2nd form for implementing this invention. Explanatory drawing of the siphon tube of the 2nd form for implementing this invention. Explanatory drawing of the principal part of FIG. The longitudinal cross-sectional view of the pressure vessel with a siphon tube which the originator considered. Explanatory drawing of the pressure vessel with a siphon tube which this originator considered. Explanatory drawing of the principal part of FIG.

  Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the drawings.

  In the first embodiment for carrying out the present invention shown in FIG. 1 to FIG. 7, 1 is liquefied carbon dioxide alone, or liquefied carbon dioxide mixture in which an active ingredient such as liquefied ethylene oxide or ethyl alcohol is dissolved in liquefied carbon dioxide. A pressure vessel with a siphon tube of the present invention that accommodates a pressure fluid 2 such as a gas. The pressure vessel 1 with a siphon tube can accommodate the pressure fluid 2 and a pressure vessel body 3 that is generally used. A generally used container valve 5 detachably attached to the mouth 4 of the pressure vessel main body 3 and the pressure fluid 2 in the pressure vessel main body 3 screwed and fixed to the container valve 5, The siphon tube 6 is guided to the outside through the container valve 2.

The siphon tube 6 is made of a metal material such as stainless steel, aluminum, aluminum alloy or the like having an outer diameter of 10 mm or less so that high pressure is applied and the properties of gas and liquid to be filled prevent corrosion, swelling, and dissolution. So that the dimension of the portion excluding the attachment portion 7 to the container valve 5 is longer than the dimension between the inner bottom surface 3a of the pressure-resistant container body 3 and the lower end of the container valve 5. In the embodiment of the present invention, three bent portions 8, 8, 8 are formed at an inner angle of 120 ° to 170 °, and the siphon tube body 10 of the inclined surface 9 is formed at the tip portion. It is comprised by the attachment member 13 by which the screw part 12 was formed in the outer peripheral part fixed by screwing to the screw hole 11 of the said container valve 5 fixed by welding to the upper part of the siphon pipe | tube main body 10. As shown in FIG.

In the pressure vessel 1 with the siphon tube having the above-described configuration, the pressure vessel main body 3 and the vessel valve 5 with the siphon tube are washed, and then the siphon tube body 10 is inserted into the pressure vessel main body 3 from the mouth portion 4. Screw 5 in by hand, then screw and fix with a torque wrench.
By screwing and fixing the container valve 5 to the mouth part 4 of the pressure-resistant container main body 3, the siphon tube main body 10 in contact with the inner bottom surface 3a of the pressure-resistant container main body 3 moves in the axial direction by moving the container valve 5 downward. The pressure portion of the pressure vessel main body 3 is generated without causing damage to the siphon tube main body 10 and the inner bottom surface 3a of the pressure vessel main body 3 by bending the three or more bent portions 8, 8, 8. A container valve 5 can be attached to 4.
Thereafter, the pressure fluid main body 3 is filled with the pressure fluid 2 through the container valve 5 and the pressure fluid 2 in the pressure container main body 3 is taken out through the container valve 5. Since the portion is in contact with the inner bottom surface 3a in the pressure vessel main body 3, the entire amount of the pressure fluid 2 in the pressure vessel main body 3 can be taken out.
When the pressure vessel main body 3 is washed and reused, the tip portion of the siphon tube main body 10 can be obtained by using the siphon tube main body 10 with the bent portions 8, 8, 8 slightly extended. Can be brought into contact with the inner bottom surface 3a of the pressure vessel main body 3 with certainty.
In addition, problems due to the dimensional error of the siphon tube 6 and the dimensional error of the pressure vessel main body 3 can be reliably prevented.
[Different forms for carrying out the invention]

  Next, different modes for carrying out the present invention shown in FIGS. 8 to 10 will be described. In the description of different embodiments for carrying out the present invention, the same components as those in the first embodiment for carrying out the present invention are denoted by the same reference numerals, and redundant description is omitted.

  The second embodiment for carrying out the present invention shown in FIGS. 8 to 10 is mainly different from the first embodiment for carrying out the present invention in that the tip of the siphon tube body 10 has a semicircular arc shape. In the pressure vessel 1A with a siphon tube constructed using the siphon tube 6A formed in this way, the first embodiment for carrying out the present invention is used in that the siphon tube 6A in which the concave portion 14 is formed is used. The same effect as that of the embodiment can be obtained.

  In the pressure vessel with siphon tube considered by the present inventor shown in FIG. 11 to FIG. A pressure vessel with a siphon tube constructed using such a siphon tube 6B in that a siphon tube 6B using a siphon tube body 10A in which two bent portions 8 and 8 are formed is used. It may be 1B.

  INDUSTRIAL APPLICABILITY The present invention is used in the manufacturing industry of a pressure vessel with a siphon tube that contains liquefied carbon dioxide alone or a pressure fluid such as a liquefied carbon dioxide mixed gas obtained by dissolving an active ingredient such as liquefied ethylene oxide or ethyl alcohol in liquefied carbon dioxide. The

1, 1A, 1B: pressure vessel with siphon tube,
2: pressure fluid, 3: pressure vessel body,
4: mouth, 5: container valve,
6, 6A, 6B: siphon tube,
7: Mounting part, 8: Bending part,
9: inclined surface, 10: siphon tube body,
11: Screw hole, 12: Screw part,
13: Mounting member, 14: Recess.

Claims (1)

In a pressure-resistant container with a siphon tube having a container valve with a siphon tube detachably attached to the mouth of the pressure-resistant container main body capable of containing pressure fluid, the siphon tube is crushed by the pressure in the pressure-resistant container main body. A stainless steel material with an outer diameter of 10 mm or less, and the tip is in contact with the inner bottom surface of the pressure vessel body due to the axial pressing force when a vessel valve with a siphon tube is attached to the mouth of the pressure vessel body. With a siphon tube characterized in that three or more bent portions are formed so that the axial dimension shrinks, and the bent portions are bent so that the inner angle is 120 to 170 degrees. Pressure vessel.

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