JPH08170798A - Device for taking out liquid phase part of liquified gas - Google Patents

Abstract

PURPOSE: To facilitate the taking-out work of the liquid, and to take out only the liquid at the same time. CONSTITUTION: A liquid taking-out tube 9 is projected from a leg threaded part 5 of a container valve 3 of a cylinder 1 into a lower part of the space inside the cylinder. The liquid taking-out tube 9 consists of an upper tube part 11 and a lower tube part 12. A spherical valve seat 19 is formed on the lower surface of a valve seat cylinder 18 provided on the lower end part of the upper tube part 11. A spherical valve disk 23 to be rotatably abutted on the spherical valve seat 19 is provided on the upper end part of the lower tube part 12, and a weight W is provided on the lower part of the lower tube part 12. In the condition where the cylinder 1 is upright, the lower tube part 12 is held in the perpendicular condition by the weight of the weight W to communicate a valve seat hole 20 with a valve disk hole 25. When the cylinder is tilted by the angle larger than the prescribed angle, the spherical valve disk 23 is oscillated relative to the spherical valve seat 19 by the weight of the weight W to shut off the communication of the valve seat hole 20 with the valve disk hole 25.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for taking out only a liquid in a liquid phase portion of a liquefied gas contained in a cylinder.

[0002]

2. Description of the Related Art Recently, due to diversification of liquefied gas types and expansion of applications, it is required to prevent the gas in the vapor phase portion of the liquefied gas from being extracted and to extract only the liquid in the liquid phase portion. There is a case.

Conventionally, the work of taking out only this kind of liquid has been carried out as shown in each schematic view of FIGS. 7 (a), (b) and (c). In FIG. 7A, the small and lightweight cylinder 1 is turned upside down so that only the liquid in the liquid phase portion L is taken out from the container valve 3. In FIG. 7B, the long cylinder 1 is tilted so that only the liquid in the liquid phase portion L is taken out from the container valve 3. In FIG. 7C, the liquid take-out pipe 59 is connected to the container valve 3
From the end of the liquid take-out pipe 59 to the outlet of the container valve 3, only the liquid in the liquid phase portion L can be taken out by the internal pressure of the cylinder 1.

[0004]

The above-mentioned conventional techniques have the following problems. 7 (a) and 7 (b), it is necessary to invert or tilt the cylinder 1, so
It takes time to take out the liquid. The configuration of FIG. 7 (c) is advantageous in that the liquid can be taken out while the cylinder 1 is in the upright posture, so that the taking-out work is easy and the above problems can be solved, but the following problems remain. It was

That is, the cylinder 1 with the liquid take-out pipe shown in FIG.
7 (b) or 7 (a) without a pipe, the cylinder 1 with a liquid take-out pipe may be accidentally tilted as shown in FIG. 7 (d). In this case,
Since the tip of the liquid take-out pipe 59 plunges into the vapor phase portion G, if the container valve 3 is opened by mistake, the gas in the vapor phase portion G will be taken out. It is an object of the present invention to make it easy to take out a liquid and to take out only a liquid.

[0006]

In order to achieve the above-mentioned object, the present invention has a device for extracting a liquid phase portion of a liquefied gas as follows.

(Invention of Claim 1) For example, FIGS.
Alternatively, as shown in FIG. 4, a container valve 3 attached to the liquefied gas cylinder 1 and a liquid removal fixed to the valve box 4 of the container valve 3 and projected into a lower region of the internal space A of the cylinder 1. The pipe 9 and the spherical valve seat 19 and the spherical valve body 23 provided in the middle of the liquid take-out pipe 9 in the longitudinal direction so as to open and close the liquid passage 10 in the liquid take-out pipe 9, and the spherical shape described above. Valve seat 1
9 and the spherical valve body 23, and a weight W for opening and closing the other 23 with respect to one of the 19 and the spherical valve body 23.

(Invention of Claim 2) The following structure is added to the structure of Claim 1 described above. For example, as shown in FIGS. 1 to 3, the liquid take-out pipe 9 is composed of an upper pipe portion 11 fixed to the valve box 4 and a lower pipe portion 12 provided with the weight W, and The spherical valve seat 19 is provided at the lower end portion of the upper pipe portion 11, and the spherical valve body 23 is provided at the upper end portion of the lower pipe portion 12 to adjust the length of the lower pipe portion 12 to the above. The dimension was set to be shorter than the length of the upper pipe portion 11.

(Invention of Claim 3) For example, as shown in FIGS. 5 and 6, a container valve 3 attached to a liquefied gas cylinder 1
And a liquid take-out pipe 9 fixed to the valve box 4 of the container valve 3 and projected into the lower area of the internal space A of the cylinder 1, and a liquid passage 10 in the liquid take-out pipe 9 Cylinder 1
Of the check valve body 39 for blocking the flow from the inner space A of the container valve 3 to the above-mentioned container valve 3, and the check valve body 39 of the above-mentioned check valve body against the valve closing force acting on the check valve body 39. The spherical weight M provided in the liquid passage 10 so as to be separated from the seat 41, and the liquid for allowing the rolling movement of the spherical weight M to allow the closing movement of the check valve body 39. Evacuation space 44 provided on the road 10
And is provided.

[0010]

[Action]

(Invention of Claim 1) The invention of Claim 1 operates as follows as shown in FIGS. 1 to 3, for example. In the state where the cylinder 1 is in the upright posture, as shown in FIGS. 1 and 3, the weight of the weight W causes the spherical valve seat 19 to move into the spherical valve body 23 (or the spherical valve body 23 into the spherical surface). Since the valve seat 19) hangs straight, the valve seat hole 20 of the spherical valve seat 19 and the valve body hole 25 of the spherical valve body 23 communicate with each other. When taking out the liquid in the liquid phase portion L in the cylinder 1,
The container valve 3 may be opened and operated while keeping the cylinder 1 in the upright posture. Then, due to the internal pressure of the cylinder 1, the liquid in the liquid phase portion L flows out of the outlet nozzle 7 of the container valve 3 through the liquid passage 10 in the liquid take-out pipe 9.

As shown in FIG. 2, when the cylinder 1 is erroneously tilted at a predetermined angle or more, the weight of the weight W causes the spherical valve element 23 with respect to the spherical valve seat 19.
(Or, the spherical valve seat 19 is swung with respect to the spherical valve body 23), so that the communication between the valve seat hole 20 and the valve body hole 25 is blocked. Even when the cylinder 1 is turned upside down, the above-mentioned communication is blocked by the same action as above. Therefore, even if the container valve 3 is accidentally opened with the cylinder tilted or inverted, the liquefied gas can be prevented from being taken out from the container valve 3.

The invention of claim 2 basically operates in the same manner as the invention of claim 1, but further operates as follows.
The lower pipe portion 12 can secure a large swing space in the internal space A of the gas cylinder 1 as much as the size thereof is reduced. For this reason, the allowable swing angle of the spherical valve body 23 with respect to the spherical valve seat 19 becomes large, and the hole diameters of the valve seat hole 20 of the spherical valve seat 19 and the valve body hole 25 of the spherical valve body 23 become larger. Can be made bigger.

(Invention of Claim 3) The invention of Claim 3 operates as follows, as shown in FIGS. 5 and 6, for example. When the cylinder 1 is in the upright posture, the check valve body 39 is separated from the check valve seat 41 by the weight of the spherical weight M, as shown in FIGS. 5 and 6A. Liquid phase part L in cylinder 1
When the liquid is taken out, the container valve 3 may be opened while the cylinder 1 is kept upright. Then, due to the internal pressure of the cylinder 1, the liquid in the liquid phase portion L flows out from the outlet nozzle 7 of the container valve 3 through the clearance of the check valve body 39.

When the cylinder 1 is accidentally tilted at a predetermined angle or more, the spherical weight M is retracted into the retreat space 44 as shown in FIG. The valve body 39 is brought into close contact with the check valve seat 41 by the check spring 42 or the like. Therefore, even if the container valve 3 is accidentally opened with the cylinder tilted or inverted, the liquefied gas can be prevented from being taken out from the container valve 3.

[0015]

The present invention has the following effects because it is configured and operates as described above. (Invention of Claim 1) When the cylinder is in the upright posture,
Since the spherical valve seat is opened by the spherical valve body, only the liquid in the liquid phase portion can be taken out through the liquid passage in the liquid take-out pipe.
Therefore, there is no need to tilt or invert the cylinder, and the liquid extraction work is easy. On the contrary,
When the cylinder is tilted, tilted, or inverted, the spherical valve seat is closed by the spherical valve body due to the weight of the weight, so that the liquefied gas itself can be prevented from being taken out. Therefore, it is possible to facilitate both the liquid extraction work and the liquid extraction.

(Invention of Claim 2) The allowable swing angle of the spherical valve body with respect to the spherical valve seat increases as the dimension of the lower pipe portion becomes smaller, and the spherical valve seat and the spherical valve body have a larger allowable swing angle. The channel diameter can be increased. As a result, the flow resistance of the liquid passage is reduced, and the liquid can be taken out quickly.

(Invention of Claim 3) When the cylinder is in the upright posture, the check valve body is pushed open by the weight of the spherical weight, so that only the liquid in the liquid phase portion can be taken out through the liquid passage in the liquid take-out pipe. Therefore, there is no need to tilt or invert the cylinder, and the liquid extraction work is easy. On the other hand, when the cylinder is tilted, tilted, or turned upside down, the spherical weight is rolled into the retreat space and its weight does not act on the check valve body. Therefore, the check valve body is closed to prevent the liquefied gas itself from being taken out. Therefore, it is possible to facilitate both the liquid extraction work and the liquid extraction.

[0018]

【Example】

(First Embodiment) FIGS. 1 to 3 show a first embodiment of the present invention. FIG. 1 is a longitudinal sectional view showing a state in which a container valve is attached to a liquefied gas cylinder. FIG. 2 is a view showing a state where the cylinder is tilted. FIG. 3 is a detailed view of the portion indicated by arrow III in FIG.

As shown in FIG. 1, a leg screw portion 5 of a valve box 4 of a container valve 3 is fixed to a neck portion 2 of a liquefied gas cylinder 1. Opening / closing part provided in the middle of the valve flow path in the valve box 4
(Not shown) is opened and closed by the handle 6. Reference numeral 1a is a pressure resistant wall of the cylinder 1, and reference numeral 7 is an outlet nozzle. The liquid take-out pipe 9 protruding downward from the leg screw portion 5 is inserted into the lower region of the internal space A of the cylinder 1. The liquefied gas stored in the internal space A is the liquid phase portion L.
And a gas phase portion G.

As shown in FIGS. 1 and 3, the liquid take-out pipe 9 is provided with a liquid passage 10 therein, and an upper pipe portion 11 screwed and fixed to the leg screw portion 5 and the liquid pipe 10. Weight W
And the lower pipe portion 12 provided with. The length of the lower pipe portion 12 is set to be shorter than the length of the upper pipe portion 11 described above. A ball valve-shaped mechanism 13 is provided across the upper pipe portion 11 and the lower pipe portion 12. By the mechanism 13, the liquid take-out pipe 9 is configured to be bendable and the liquid passage 10 is opened and closed.

The above liquid take-out pipe 9 and the ball valve-like mechanism 1
3 is configured as follows. The upper tube portion 11 is
It is composed of a pipe portion 15 provided with a lower socket 16, a nipple 17 screwed to the socket 16, and a valve seat cylinder 18 screwed to the nipple 17.
A spherical valve seat 19 and a valve seat hole 20 are formed in the valve seat cylinder 18. It is preferable that the screwed portions of the nipple 17 and the valve seat cylinder 18 have a hermetically sealed shape.

The lower pipe portion 12 is mounted on the valve casing 22 which is screwed into the valve seat cylinder 18 and is closed and abutted on the spherical valve seat 19. The spherical valve body 23 and the cylindrical member 24 fixed to the spherical valve body 23 with screws. A valve body hole 25 is formed in the spherical valve body 23. The weight W is formed by the thick portion of the cylindrical member 24. When the cylinder 1 is in the upright posture, as shown in FIGS. 1 and 3 above, the weight of the weight W causes the lower pipe portion 12 to be straight with respect to the upper pipe portion 11, and the valve seat The hole 20 and the valve body hole 25 communicate with each other.

When the liquid in the liquid phase portion L in the cylinder 1 is taken out, the container valve 3 may be opened while the cylinder 1 is kept upright. Then, due to the internal pressure of the cylinder 1, the liquid in the liquid phase portion L passes through the valve body hole 25, the valve seat hole 20, and the pipe portion 15 in order from the liquid intake port 27 at the lower end of the cylindrical hole of the cylindrical member 24 to the container. Outlet nozzle 7 of valve 3
Spilled from.

As shown in FIG. 2, when the cylinder 1 is erroneously tilted at a predetermined angle or more, the weight of the weight W causes the spherical valve body 23 to move toward the spherical valve seat 19.
Is swung, so that the communication between the valve seat hole 20 and the valve body hole 25 is blocked. Even when the cylinder 1 is turned upside down, the above-mentioned communication is blocked by the same action as above. Therefore, even if the container valve 3 is accidentally opened with the cylinder tilted or inverted, the liquefied gas can be prevented from being taken out from the container valve 3.

FIG. 4 shows a modification of the first embodiment described above. In this modified example, members having the same configurations as those of the first embodiment will be described with the same reference numerals in principle. In this case, the length of the upper pipe portion 11 of the liquid take-out pipe 9 is set to be shorter than the length of the lower pipe portion 12. The upper pipe portion 11 is composed of a nipple 17 screwed to the leg screw portion 5 of the container valve 3 and a valve seat cylinder 18 screwed to the nipple 17. In addition, the lower pipe portion 1 described above
2 includes a valve casing 22, a spherical valve body 23, and a cylindrical member 24 having a weight W, as in the above-described embodiment, but the spherical valve body 23 and the cylindrical member 24 are connected by a pipe portion 29. There is. The modification of FIG. 4 basically operates in the same manner as the above embodiment.

The above-described first embodiment and modification can be modified as follows. Instead of providing the spherical valve seat 19 at the lower end of the upper pipe portion 11 and the spherical valve body 23 at the upper end of the lower pipe portion 12, a spherical valve body 23 at the lower end of the upper pipe portion 11 is replaced.
And a spherical valve seat 19 on the upper end of the lower pipe portion 12.
It is also possible to provide. The connection structure between the valve box 4 of the container valve 3 and the upper pipe portion 11 may be fixed by welding or the like instead of being screwed, and the valve box 4 and the upper pipe portion 1 may be fixed.
1 and 1 may be integrally formed in advance. Instead of forming the weight W integrally with the lower pipe portion 12,
It may be formed separately from the lower tube portion 12.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment. FIG. 5 is a vertical cross-sectional view showing a state where the container valve 3 is attached to the liquefied gas cylinder 1. FIG. 6A is a detailed view of the arrow VI portion in FIG. 5 described above. Also, FIG. 6 (b)
[FIG. 6] is a view showing a state in which the cylinder 1 is tilted and corresponds to FIG. 6 (a). In the second embodiment,
In principle, members having the same configurations as those of the first embodiment will be described with the same reference numerals.

The liquid take-out pipe 9 which is projected into the lower region of the internal space A of the cylinder 1 is a casing 31 screwed and fixed to the leg screw portion 5 of the valve box 4 of the container valve 3, and a lower portion of the casing 31. And a connected pipe section 32. A liquid path 10 is formed across the casing 31 and the pipe portion 32. A check valve 33 is provided in the casing 31 to prevent the flow from the internal space A of the cylinder 1 to the container valve 3.

That is, in the lower half of the casing 31,
The valve seat cylinder 34, the sleeve 35, and the end plate 36 are mounted in order. The check valve body 39 inserted into the check valve chamber 38 in the sleeve 35 is the valve seat hole 4 of the valve seat cylinder 34.
The check valve seat 41 provided at the lower part of 0 is biased by the check spring 42. The outer periphery of the valve seat cylinder 34 is screwed and fixed to the casing 31 by a sealing member 37 in a hermetically sealed manner. The pipe portion 32 is fixed to the end plate 36. In the weight accommodating chamber 43 formed in the upper half of the casing 31, the check valve body 39 is installed in the check valve seat 41 against the valve closing force acting on the check valve body 39.
A spherical weight M to be separated from is inserted, and a retreat space 44 is provided around the spherical weight M.

When the cylinder 1 is in the upright posture,
As shown in FIGS. 5 and 6A, the weight of the spherical weight M causes the check valve body 39 to be separated from the check valve seat 41 against the check spring 42. When the liquid in the liquid phase portion L in the cylinder 1 is taken out, the container valve 3 may be opened and operated while the cylinder 1 is in the upright posture. Then, the internal pressure of the cylinder 1 causes the liquid in the liquid phase portion L to flow from the lower end of the pipe portion 32 to the check valve chamber 38, the valve seat hole 40, and the outflow groove 4.
6 and the weight accommodating chamber 43 in this order, and is discharged from the outlet nozzle 7 of the container valve 3.

When the cylinder 1 is erroneously tilted by a predetermined angle or more, the spherical weight M is retracted into the retreat space 44 as shown in FIG. The valve body 39 is brought into close contact with the check valve seat 41 by the check spring 42. Therefore, even if the container valve 3 is accidentally opened with the cylinder tilted or inverted, the container valve 3
It is possible to prevent the liquefied gas from being taken out from. When the liquid in the liquid phase portion L in the cylinder 1 is taken out again, the cylinder 1 may be returned to the upright posture. Then, the above-mentioned spherical weight M
However, the internal pressure of the cylinder acting on the check valve body 39 and the check spring 42
The check valve body 39 is separated from the check valve seat 41 against the urging force of the check valve seat 41.

Incidentally, the check valve chamber 38 and the weight accommodating chamber 43 described above.
And may be communicated with each other at all times through a minute gap. That is, the sealing member 37 of the valve seat cylinder 34 may be omitted, or the sealing member 37 of FIG.
A small hole 48 is formed in the valve seat cylinder 34 as shown by a two-dot chain line in the figure. In this way, the check valve chamber 38 and the weight accommodating chamber 43 are communicated with each other through the minute gap, so that when the check valve body 39 that is closed is opened by the spherical weight M, the weight accommodating chamber 43 The internal pressure becomes substantially equal to the internal pressure of the check valve chamber 38. For this reason, the weight of the spherical weight M may be a small value that overcomes the biasing force of the check spring 42, and the spherical weight M can be made smaller by that amount and the casing 31 can be made compact.

[Brief description of drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of the present invention, in which a container valve is attached to a liquefied gas cylinder.

FIG. 2 is a view showing a state where the cylinder is tilted.

3 is a detailed view of a portion indicated by an arrow III in FIG. 1 described above.

FIG. 4 shows a modified example of the first embodiment described above, and FIG.
It is a figure equivalent to.

FIG. 5 shows a second embodiment of the present invention and is a view corresponding to FIG. 1 described above.

6 is a detailed view corresponding to the part indicated by arrow VI in FIG. 5 above, FIG. 6 (a) showing the open state of the check valve, and FIG. 6 (b).
Indicates the closed state of the check valve.

FIG. 7 is a schematic diagram showing a conventional example.

[Explanation of symbols]

1 ... cylinder, 3 ... container valve, 4 ... valve box, 9 ... liquid extraction pipe,
10 ... Liquid path, 11 ... Upper pipe part, 12 ... Lower pipe part, 19 ...
Spherical valve seat, 23 ... Spherical valve body, 39 ... Check valve body, 41 ...
Check valve seat, 44 ... Retraction space, A ... Internal space of cylinder 1, W ... Weight, M ... Spherical weight.

Claims (3)

[Claims] 1. A container valve (3) attached to a liquefied gas cylinder (1) and an internal space (A) of the cylinder (1) fixed to a valve box (4) of the container valve (3). The liquid take-out pipe (9) which is projected into the lower area of the liquid take-off pipe (9) and the liquid take-out pipe (9) in the liquid take-out pipe (9) are opened and closed in the middle of the liquid take-out pipe (9). The spherical valve seat (19) and the spherical valve body (23), and the spherical valve seat (19) and the spherical valve body (23) with respect to one (19) of the other (23) is opened and closed. Moving weight (W)
And a device for taking out a liquid phase portion of a liquefied gas. 2. A device for extracting a liquid phase portion of a liquefied gas according to claim 1, wherein the liquid extraction pipe (9) comprises an upper pipe portion (11) fixed to the valve box (4). The lower pipe portion (12) provided with the weight (W), and the spherical valve seat (19) provided at the lower end of the upper pipe portion (11). The spherical valve body (23) is provided at the upper end of 12),
A device for extracting a liquid phase portion of liquefied gas, characterized in that the length of (12) is set to be shorter than the length of the upper pipe portion (11). 3. A container valve (3) attached to a liquefied gas cylinder (1) and an internal space (A) of the cylinder (1) fixedly mounted on a valve box (4) of the container valve (3). Of the container valve (9) which is provided in the liquid take-out pipe (9) which is rushed into the lower region of the cylinder and the liquid passage (10) in the liquid take-out pipe (9) and which is the same as the above-mentioned container valve 3) A check valve body (39) for blocking the flow to the check valve body and a check valve body of the same as above against the valve closing force acting on the check valve body (39).
The spherical weight (M) provided in the liquid passage (10) so as to separate (39) from the check valve seat (41), and allowing the rolling of the spherical weight (M) to allow the above-mentioned check. A device for extracting a liquid phase portion of liquefied gas, comprising a retreat space (44) provided in the liquid passage (10) so as to allow the valve body (39) to move in a closed state.