JPH078960Y2 - Container valve for pressure vessels used in seawater - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a container valve for a pressure vessel used in seawater, which is suitable for a pressure vessel mounted on an underwater object such as a submersible.

[Conventional technology]

The conventional container valve for pressure vessels used on land is the second
As shown in the longitudinal sectional view of the drawing, the container valve 4 attached to the mouthpiece part 3 of the pressure container 2 filled with the internal fluid 1 is a main valve 6 for shutting off the pipe connection part 5 and the internal fluid 1 of the pressure container 2. In addition, the main valve 6 is opened by opening the main valve 6 when the internal fluid 1 is used by interposing the pipe connection part 5 and the gap seal packing 7 of the main valve 6. In order to prevent the internal fluid pressure from becoming excessive and breaking the pressure vessel 2 in the event of a fire, etc., a branch 9 is taken from between the mouthpiece part 3 and the main valve seat 8 and a safety plate mounting part 10 is provided. In the emission hole 11
The cap 12 with the cap is covered with the screw 13, and the safety plate 14 capable of rupturing at a predetermined pressure and releasing the internal fluid 1 is sandwiched between the safety plate mounting portion 10 and the cap 12, and the ruptured safety plate The internal fluid 1 escaped from 14 is discharged from the discharge port 11 and prevents the pressure vessel 2 from being broken.

However, when trying to use the pressure vessel 2 having such a vessel valve 4 in seawater, the safety plate 14 is usually a copper plate, so the seawater corrodes and the internal fluid 1 escapes from the pressure vessel 2. The pressure vessel 2 is not used. The safety plate 14 is not necessary because there is no possibility of damage to the pressure vessel 2 due to surrounding fire or the like in seawater, but this safety plate 14 is necessary because it is necessary when the vessel is lifted ashore for maintenance and inspection.
Can't be lost.

Therefore, it is desirable to develop a container valve that prevents the internal fluid 1 from escaping even if there is a hole in the safety plate 14 due to corrosion in seawater, and that utilizes the function of the safety plate 14 when it is lifted ashore. Be done. It should be noted that there is a means for preventing corrosion by coating the safety plate 14 with a corrosion resistant material, but it does not serve as a means for surely preventing escape.

[Problems to be solved by the device]

The present invention has been proposed in view of such circumstances,
A pressure vessel used in seawater that utilizes the function of the safety plate to burst at a specified pressure on land, and in seawater can prevent escape of internal fluid even if the safety plate is damaged by corrosion. The purpose of the invention is to provide a container valve.

[Means for Solving the Problems]

To this end, the present invention relates to a container valve mounted on the mouthpiece of a pressure container that is filled with an internal fluid and used in seawater.
A safety plate attached to a safety plate mounting portion provided with a branch between the main valve seat and the mouthpiece and bursting at a predetermined pressure, and in seawater provided between the branch and the safety plate mounting portion. It has a stop valve that is closed and opened on land.

[Action]

In the container valve of the pressure vessel used in seawater of the present invention, in the land state where it is necessary to prevent the pressure vessel from being damaged by surrounding fire, etc., the stop valve should be opened to utilize the function of the safety plate. When using in seawater where there is no factor to destroy the pressure vessel, keep the stop valve closed to prevent the internal fluid from escaping through the safety plate even if the safety plate is corroded and damaged by seawater. .

〔Example〕

One embodiment of a container valve of a pressure container used in seawater according to the present invention will be described with reference to FIG.

In FIG. 1, the same reference numerals as those in FIG. 2 denote the same members as in FIG. 2, respectively, and the container valve 4 attached to the mouthpiece part 3 of the pressure container 2 filled with the internal fluid 1 has the pipe connection part 5 And a main valve 6 that shuts off the internal fluid 1 of the pressure vessel 2 with a main valve valve seat 8, and a pipe connecting portion 5 and a gap seal packing 7 of the main valve 6 are interposed. A branch 9 is taken from between the main valve seat 8 and a safety plate mounting portion 10 is provided, and a cap 12 having a discharge hole 11 is covered therewith by a screw 13, and a predetermined distance is provided between the safety plate mounting portion 10 and the cap 12. Safety plate made of copper plate that can burst under pressure to release internal fluid 1
14 is sandwiched.

Further, a stop valve seat 15 is provided between the branch 9 and the safety plate mounting portion 10.
Is provided, a stop valve 17 having a packing 16 is fitted therein, and the stop valve 17 is covered with a slip-off prevention lid 18.

In such a device, in the land state, the stop valve 17 is turned and the stop valve seat 15 is opened, and when the pressure of the internal fluid 1 becomes excessive due to surrounding fire or the like, the action of the safety plate 14 should be utilized. On the other hand, when used in seawater, the stop valve 17 is closed to shut off the connection between the branch 9 and the safety plate mounting portion 10, and even if the safety plate 14 is corroded and damaged, the internal fluid 1 escapes. Prevent from doing.

[Effect of device]

In short, according to the present invention, in a container valve mounted on the mouthpiece part of a pressure container filled with an internal fluid and used in seawater, a main valve for shutting off the internal fluid from the pipe connection part of the valve, and the main valve valve. A safety plate that is attached to a safety plate mounting part provided with a branch between the seat and the base part and bursts at a predetermined pressure, and is provided between the branch and the safety plate mounting part and is closed in seawater and closed on land. Since it has a stop valve that opens, the function of the safety plate to burst at a predetermined pressure on land is utilized, and in seawater, the escape of internal fluid is prevented even if the safety plate is damaged by corrosion. The present invention is extremely useful industrially because it provides a container valve for a pressure container used in seawater.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a container valve of a pressure vessel used in seawater of the present invention, and FIG. 2 is a vertical sectional view of a conventional container valve of a pressure vessel. DESCRIPTION OF SYMBOLS 1 ... Internal fluid, 2 ... Pressure container, 3 ... Base part, 4 ... Container valve, 5 ... Piping connection part, 6 ... Main valve, 7 ... Packing, 8 ... Main valve seat, 9 ... Branch, 10 ... Safety plate Mounting part, 11 ... Discharge port, 12
… Cap, 13… Screw, 14… Safety plate, 15… Stop valve seat,
16 ... packing, 17 ... stop valve, 18 ... lid.

Claims (1)

[Scope of utility model registration request] 1. A container valve mounted on the mouthpiece of a pressure container which is filled with an internal fluid and used in seawater, wherein a main valve for shutting off the internal fluid from a pipe connecting portion of the valve, and the main valve valve seat. A safety plate that is attached to a safety plate mounting part that is branched from the base part and that bursts at a predetermined pressure.It is provided between the branch and the safety plate mounting part and is closed in seawater and open on land. A container valve for a pressure container used in seawater, characterized by having a stop valve.