JPH09222197A - Frp high pressure container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a FRP high pressure container to which a skirt and a protector are attached relatively easily, the skirt and protector being replaced by another when damaged and having a structure for preventing the propagation of damage to the canister main body. SOLUTION: A high pressure container is constructed in such a manner that FRP layers 6 are laminated on the outer surface of a liner 5, a protector 3 is provided in the upper end part of a container body part 8. In this case, projections 18 and 19 are formed in the outer peripheral parts of the upper and lower end parts of the body part 8 integrally with the FRP layers 6, recessed parts 20 and 21 engaged with the projections 18 and 19 are formed in the inner peripheral surfaces of the container attaching sides of the protector 3 and the skirt 4, slits 22 and 23 are formed vertically form the attaching sides passing through the recessed parts 20 and 21, the protector 3 and the skirt 4 are respectively attached by fitting the projections 18 and 19 of the body part 8 in the recessed parts 20 and 21 and the upper and lower parts of the recessed parts 20 and 21 in the outer peripheries of the attaching sides are wound and fastened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FRP high-pressure container having a protector at the upper end of a container body and a skirt at the lower end, and more particularly to a portable F-type container such as liquefied petroleum gas.
The present invention relates to an RP high-pressure container.

[0002]

2. Description of the Related Art In recent years, FRP high-pressure containers have been receiving attention for the purpose of weight reduction. In this FRP high-pressure container, for example, as shown in FIG. 5, a liner 31 is made of aluminum or plastic, and an FRP layer 32 is laminated on the outer surface of the liner 31. An accessory mounting portion 34 is provided for mounting accessories (not shown) such as. If this FRP high-pressure container is a portable one such as liquefied petroleum gas, a skirt 35 for preventing it from falling when installed at the bottom of the container and a protector 36 for protecting accessories at the head are provided. Each is installed.

The structure of the container body of the FRP high-pressure container is generally of the following two types. That is, one is
The strength in the longitudinal direction is held by the liner 31, and the FRP filament is wound around a so-called hoop wrap that is circumferentially wound only on the body portion as a reinforcement in the circumferential direction. Another is to use a liner with weak strength and FR on the outer surface.
It is formed by winding a P-filament in a so-called full wrap which is wound in a spiral shape while shifting the phase in the circumferential direction so as to draw a figure 8, for example. And a hoop wrap (hereinafter referred to as a full wrap + hoop wrap) on the full wrap. There is.

[0004]

By the way, in the FRP high-pressure container in which the former FRP filament is wound around only the body portion in the circumferential direction, a skirt or protector must be processed or joined in advance when forming the liner. Since the FRP filament can be wound around the body in the circumferential direction without any trouble, a skirt or protector can be easily provided.
Since the strength in the longitudinal direction is retained by the liner, the weight reduction of the FRP high-pressure container as a whole is insufficient and there is room for improvement.

On the other hand, in the latter FRP high-pressure container formed by winding the FRP filament around a full wrap or a full wrap + hoop wrap, the weight of the liner can be reduced and the overall weight of the container can be reduced. If the protector is processed and provided, the skirt and protector will be obstructive, and it will not be possible to wind the FRP filament around the mirror, and full wrapping will not be possible. For this reason, the skirt or protector must be provided by firmly wrapping the FRP filament on the outer surface of the liner and then joining the mirror body with an adhesive after forming the container body, or by wrapping the FRP filament and firmly fixing it. Even if it is provided in this way, if the skirt or the protector is damaged, if the damaged part propagates, there is a risk of affecting the FRP layer through the joint part or the fixed part and leading to the rupture of the container. If the container is damaged, the entire container must be discarded even if the container body is not damaged, which is uneconomical.

Therefore, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to attach a skirt or protector to a FRP container body relatively easily and to prevent damage to the skirt or protector. Even if it is possible to replace it, a high-pressure container made of FRP having a structure in which a damaged portion is less likely to propagate to the container body is provided.

[0007]

In order to achieve the above object, the FRP high-pressure container according to the present invention has an FRP layer laminated on the outer surface of a liner, a protector at the upper end of the container body, and a skirt at the lower end. In an FRP high-pressure container provided with FR, FR is provided on the outer periphery of the upper end and the lower end of the container body.
While forming a ridge integrally with the P layer, a concave ridge that engages with the ridge is formed on the inner peripheral surfaces of the protector and the skirt on the container mounting side, and passes through the ridge and extends vertically from the mounting side end. A slit is formed on the ridge, and the ridge of the container body is engaged with the ridge to attach the protector and skirt.
The upper and lower sides of the recessed line on the outer circumference of the mounting side are tightened.

In the above FRP high-pressure container, a band, a string or a thread is used as a means for tightening the upper and lower sides of the recess on the outer periphery of the mounting side, and the material thereof is preferably resin, FRP or metal. Used for.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view showing a right half of a portable FRP high-pressure container according to the present invention in a cross section, FIG. 2 is an enlarged explanatory view showing a portion X of FIG. 1 in a right half cross section, and FIG. 4 is a front view showing the right half of the protector according to FIG.
FIG. 4 is a front view showing a right half of a skirt according to the present invention in section.

The FRP high-pressure container 1 is basically composed of a container body 2, a protector 3 and a skirt 4. The container body 2 has a laminated structure of a plastic liner 5 and an FRP layer 6 formed by winding the FRP filament on the outer surface of the plastic liner in a full wrap, and includes a head mirror portion 7, a body portion 8, and a bottom mirror portion 9. The head mirror portion 7 is fitted with the inner mouth fitting 12 so as to wrap the body portion 11 inside the fluid outflow port 10 when the liner 5 is molded, while the inner mouth fitting 12 is attached to the outer circumference of the body portion 11 of the inner mouth fitting 12. The FRP filament is wound around the outer circumference of the liner 5 located on the inner side of the liner 5 to form the FRP reinforcing layer 13, and the FRP layer 6 is further laminated on the outer circumference of the liner 5. An accessory mounting portion 17 for mounting accessories such as a valve and a pressure gauge that are screwed into the fitting 12 is structured. Further, ridges 18 and 19 are integrally formed with the FRP layer 6 on the outer circumferences of the mounting portions on which the protector 3 and the skirt 4 of the body portion 8 are respectively mounted.

In this example, the protector 3 and the skirt 4 are made of plastic, have an inner diameter substantially the same as the outer diameter of the container body 2, and are integrally molded in a cylindrical shape. Is a concave line 2 which engages with the above-mentioned convex lines 18 and 19.
0 and 21 are formed, and four slits 22 and 23 are formed vertically through the recessed strips 20 and 21 at intervals of 90 degrees from the mounting side end. Then, the protector 3 and the skirt 4 are provided with recessed strips 20,
After attaching 21 so as to engage with the ridges 18 and 19, the outer circumferences of the ridges 20 and 21 of the protector 3 and the skirt 4 are attached to the ridges 20 and 21.
It is tightened and fastened with a tightening band 24 over and under the.

In the portable FRP high-pressure container 1 according to the present invention having the above-described structure, the container body 2 is manufactured with the protector 3 and the skirt 4 separately, so that the container body 2 can be easily manufactured by full wrapping. Not only can productivity and quality be expected to be improved, but also the liner can be made thinner and the weight can be sufficiently reduced. Further, the protector 3 and the skirt 4 are made of plastic and can be molded individually by injection molding or the like, so that the cost can be reduced. In addition, the protector 3 and the skirt 4 can be easily attached to and detached from the container body 2 by expanding and contracting the slits 22 and 23.
To fix it after mounting it, engage the concave ridges 20 and 21 with the convex ridges 18 and 19, and fix the outer circumferences of the concave ridges 20 and 21 around the upper and lower sides of the concave ridges 20 and 21 with a tightening band 24. Since the protector 3 or / and the skirt 4 are damaged, the protector 3 or / and the skirt 4 can be easily replaced and the container body 2 can be reused, which is economical. In addition, because of this fixing method, there is no concern that damage will propagate to the container body 2.

In the above embodiment, the container body 2 is made of plastic as the liner 5, and the head mirror portion 7, the body portion 8 and the bottom mirror portion 9 are all wrapped with the FRP filament in a full wrap. However, the present invention is not limited to this embodiment. For example, the winding of the FRP filament may be a full wrap + hoop wrap, or the liner 5 may be used.
As the strength of the longitudinal direction, a liner of aluminum, FRP, or the like is used for the strength in the longitudinal direction, and FRP filament is wound around the body 8 only on the hoop wrap to reinforce the strength in the circumferential direction. Alternatively, the container body 2 may be formed.

The structure of the accessory mounting portion 17 provided on the head mirror section 7 is adopted as a preferred example, and the structure of the accessory mounting portion conventionally used may be used. With the above structure, the inner mouth metal fitting 12 is firmly held inside the fluid outflow / outlet opening 10, and the outer mouth metal fitting 16 can be attached to and detached from the inner mouth metal fitting 12 by screwing.
Further, the sealing material such as the O-ring 15 can be easily replaced and the airtightness can be maintained, so that the life of the container can be improved and the cost can be reduced. It has such advantages.

Although the protector 3 and the skirt 4 are made of plastic as an example, aluminum or a thin steel plate may be used. Furthermore, the case where four slits 22 and 23 formed in the protector 3 and the skirt 4 are formed at intervals of 90 degrees has been taken as an example, but about 3 to 8 is preferable, and if less than 3 the expansion is small and the container body 2 It becomes difficult to attach to. On the other hand, if the number exceeds eight, the strength of the protector 3 and the skirt 4 may be concerned. Therefore, it is more preferably 4 to 6.

[0016]

As described above, the FR according to the present invention
In the case of a high-pressure container made of P, the container body can be easily manufactured by full wrap, and the productivity and quality can be expected to be improved, and the liner can be made thin and the weight can be sufficiently reduced.
In addition, the skirt and protector can be easily attached to and detached from the FRP container body, and even if they are damaged, they can be replaced, and the damaged part does not easily propagate to the container body, and the container body can be reused. It is economical.

[Brief description of drawings]

FIG. 1 is a front view showing a cross section of the right half of a portable FRP high-pressure container according to the present invention.

FIG. 2 is an enlarged explanatory view showing a right half cross section of a portion X in FIG.

FIG. 3 is a front view showing the right half of the protector according to the present invention in section.

FIG. 4 is a front view showing the right half of the skirt according to the present invention in section.

FIG. 5 is an explanatory view showing a right half of a conventional FRP high-pressure container in cross section.

[Explanation of symbols]

1: FRP high pressure container 2: Container body
3: protector 4: skirt 5: plastic liner 6: FRP layer 7: head mirror
8: Body 9: Bottom mirror 10: Fluid outflow port 1
1: Body 12: Inside mouth metal fitting 13: FRP reinforcement layer 1
4: Groove 15: O-ring 16: Outer fitting 1
7: Accessory mounting part 18, 19: Convex line 20, 21: Recessed line 2
2, 23: Slit 24: Tightening band

Claims (2)

[Claims] 1. A FRP high-pressure container comprising an FRP layer laminated on an outer surface of a liner, a protector provided at an upper end of a container body, and a skirt provided at a lower end, and an outer periphery of an upper end and a lower end of the container body. On the inner peripheral surface of the protector and the skirt on the container mounting side, a concave line that engages with the convex line is formed on the inner peripheral surface of the protector and the skirt, and passes through the concave line from the end on the mounting side. A slit is formed vertically, and the protector and the skirt are attached by engaging the recess on the protrusion of the container body, and the upper and lower sides of the recess on the outer periphery of the mounting side are tightened. FRP high pressure container. 2. The FRP high-pressure container according to claim 1, wherein the means for winding up and down the recess on the outer periphery of the mounting side is a band, a string or a thread.