JP5740846B2 - tank - Google Patents

Description

The present invention relates to the tank.

An inner liner having a first opening and having an internal space for containing liquid or gas; a fiber reinforced resin layer having a second opening and covering the outer peripheral surface of the inner liner; and first and second There has been proposed a tank including an inner liner and a base that is attached to a fiber reinforced resin layer and communicates with an internal space in a state of penetrating through the opening (see Patent Document 1).
In the tank, the base includes a base body penetrating through the first and second openings, an inner liner portion around the first opening and the second opening that bulges from the outer periphery of the base body. An annular wall portion that extends radially outward of the first and second openings between the portion of the fiber reinforced resin layer around and the portion of the inner liner and the portion of the fiber reinforced resin layer attached thereto And have.
And an internal space is obstruct | occluded by the lid | cover being fitted by the opening part formed in the inner peripheral part of a nozzle | cap | die main body.

JP 2009-58111 A

However, in the above tank, when the atmospheric pressure outside the tank becomes higher than the atmospheric pressure in the internal space, a force in the direction toward the internal space acts on the lid, and a force in the direction toward the internal space acts on the annular wall portion of the base. To do.
This force acts as a force in the direction of peeling the annular wall portion from the portion of the fiber reinforced resin layer around the second opening, in other words, the portion of the fiber reinforced resin layer around the second opening. Acts in the direction of peeling from the annular wall.
Therefore, in the conventional tank, there is a possibility that the portion of the fiber reinforced resin layer around the second opening and the annular wall portion are peeled off.
Therefore, the appearance of a tank capable of preventing peeling of the fiber reinforced resin layer and the base even under an environment in which such a difference in atmospheric pressure occurs is desired.
The present invention has been made in view of such circumstances, you and aims to provide an advantageous tank in order to prevent peeling of the fiber-reinforced resin layer and the base.

To achieve the above object, the present onset Ming, an inner liner interior space is formed for containing a liquid or gas having a first opening, the outer periphery of the inner liner has a second opening A first fiber reinforced resin layer covering the surface; a base attached to the inner liner and the first fiber reinforced resin layer in a state of penetrating the first and second openings, and communicating with the internal space; The base includes a base body that penetrates through the first and second openings, and the inner liner that bulges from the outer periphery of the base body and around the first opening. And an annular wall portion sandwiched between the portion of the first fiber reinforced resin layer around the second opening portion, and the annular wall portion is provided around the first opening portion. An inner end surface to which a portion of the inner liner is attached; and 2 and an outer end surface to which the portion of the first fiber reinforced resin layer around the opening is attached, and the base further includes a base body from an inner peripheral end of the outer end surface of the annular wall portion. A bottom wall extending in a cylindrical shape centering on the central axis of the bottom wall, and an upright wall standing upright from the entire periphery of the front end of the bottom wall, and an inner peripheral portion of the outer end surface forming the inner peripheral portion of the outer end surface; An open locking groove is formed on the radially outer side of the bottom wall by a cylindrical bottom surface forming the outer peripheral surface of the bottom wall and an upright surface of the upstanding wall facing the inner peripheral portion of the outer end surface; The outer end surface inner peripheral portion is formed as an inclined surface gradually separating from the standing surface as it goes radially outward of the bottom surface, and the outer end surface inner peripheral portion has the first periphery around the second opening. A portion of the first fiber reinforced resin layer is attached to a portion of the outer end face, and a portion of the first fiber reinforced resin layer around the second opening is attached to the fiber reinforced resin layer. The but with the locking groove is attached, said second fiber-reinforced resin layer is a separate member is provided with the first fiber-reinforced resin layer, the second fiber-reinforced resin layer and the rising surface Directly contacting the bottom surface and pressing the peripheral portion of the first opening of the first fiber reinforced resin layer against the inner peripheral portion of the outer end surface, and the base body in a plane passing through the central axis of the base body In the cut state, the length of the second fiber reinforced resin layer contacting the upstanding surface has a dimension larger than the length of the second fiber reinforced resin layer contacting the bottom surface. It shall be the feature.

According to the tank of the present invention, the portion around the second opening of the first fiber reinforced resin layer is pressed against the inner peripheral portion of the outer end surface of the annular wall portion by the second fiber reinforced resin layer. Therefore, peeling of the portion of the first fiber reinforced resin layer around the second opening from the outer end surface of the annular wall portion is prevented, and therefore, peeling of the first fiber reinforced resin layer and the base is prevented. advantageous terms of between that Do not.

It is sectional drawing which shows the structure of the tank 10 of this Embodiment. It is sectional drawing which shows the principal part of the tank 10 of this Embodiment.

Next, embodiments of the present invention will be described with reference to the drawings.
First, the configuration of the tank according to the present embodiment will be described, and then the method for manufacturing the tank will be described.
As shown in FIG. 1, the tank 10 includes an inner liner 12, a first fiber reinforced resin layer 14, a base (polar ring) 16, a second fiber reinforced resin layer 18, and a lid 20. It is configured.
Moreover, in this Embodiment, the case where the tank 10 accommodates drinking water is demonstrated.

As shown in FIGS. 1 and 2, the inner liner 12 has a first opening 22 and is formed with an internal space S that accommodates liquid (drinking water) or gas. In the present embodiment, the inner liner 12 has a cylindrical shape, and two first openings 22 are provided coaxially at both ends in the longitudinal direction of the inner liner 12.
As shown in FIG. 1, the inner liner 12 includes a cylindrical body portion 1202 and two dome portions 1204 connected to both ends of the body portion 1202, and the first opening portion 22 is provided in each dome portion 1204. It is formed in the center.
The inner liner 12 is formed of a synthetic resin, and various conventionally known synthetic resins such as ABS (acrylonitrile butadiene styrene) resin and PET (polyethylene terephthalate) resin can be used as the synthetic resin.

As shown in FIGS. 1 and 2, the first fiber reinforced resin layer 14 has a second opening 24 positioned coaxially with the first opening 22 and covers the outer peripheral surface of the inner liner 12. Yes. In the present embodiment, the first fiber reinforced resin layer 14 also has a cylindrical shape, and two second openings 24 are provided corresponding to the first openings 22.
As shown in FIG. 1, the first fiber reinforced resin layer 14 includes a body part 1402 overlaid on the body part 1202, and a dome part 1404 overlaid on each dome part 1204, and the second opening 24 has each A dome portion 1404 is formed at the center.
The first fiber reinforced resin layer 14 is formed by winding reinforcing fibers (filaments) impregnated with a thermosetting resin around the outer peripheral surface of the inner liner 12 and then thermosetting the thermosetting resin.
Various conventionally known synthetic resins such as an epoxy resin can be used as the thermosetting resin.
Various conventionally known fibers such as carbon fibers and glass fibers can be used as the reinforcing fibers.

As shown in FIGS. 1 and 2, the base 16 is attached to the inner liner 12 and the first fiber reinforced resin layer 14 in a state of penetrating the first and second openings 22 and 24 and into the internal space S. It communicates. In the present embodiment, two caps 16 are provided corresponding to the first and second openings 22 and 24.
In the present embodiment, the base 16 is formed of a synthetic resin having excellent chemical resistance.
As such a synthetic resin, various conventionally known synthetic resins such as glass fiber-containing polyphenylsulfone resin can be used.

  As shown in FIG. 2, the base 16 includes a base body 26, an annular wall portion 28, and a locking groove 30.

The base body 26 is passed through the first and second openings 22 and 24.
A base-side opening 32 to which the lid 20 is fitted is provided on the inner peripheral portion of the base body 26.
The base-side opening 32 has a large-diameter hole 3202 and a small-diameter hole 3204 following the large-diameter hole 3202, and the boundary between the large-diameter hole 3202 and the small-diameter hole 3204 is an annular end surface. A notch 3206 is formed on the inner periphery of the end face.

The annular wall portion 28 bulges from the outer peripheral portion of the base body 26 and is a portion of the inner liner 12 around the first opening 22 and a portion of the first fiber reinforced resin layer 14 around the second opening 24. Between the first and second openings 22, 24.
One end surface in the thickness direction of the annular wall portion 28 is an inner end surface 2802 facing the inside of the tank 10, and the other end surface is an outer end surface 2804 facing the outside of the tank 10.
The portion of the inner liner 12 around the first opening 22 is attached to the inner end surface 2802 of the annular wall portion 28.
The portion of the first fiber reinforced resin layer 14 around the second opening 24 is attached to the outer end surface 2804 of the annular wall portion 28.

The locking groove 30 is provided on the inner peripheral portion of the outer end surface 2804 of the annular wall portion 28 where the second opening portion 24 is located, and is provided in an open shape on the radially outer side of the base body 26.
In the present embodiment, the locking groove 30 includes an inner peripheral portion of the outer end surface 2804, and a bottom wall 3002 that extends from the inner peripheral end of the outer end surface 2804 in a cylindrical shape centering on the central axis of the base body 26. , And a standing wall 3004 erected from the front portion of the bottom wall 3002.

As shown in FIG. 2, the second fiber reinforced resin layer 18 is provided in the locking groove 30, and a portion around the second opening 24 of the first fiber reinforced resin layer 14 is formed on the annular wall portion 28. The outer end surface 2804 is pressed.
The second fiber reinforced resin layer 18 is formed by winding a reinforcing fiber impregnated with a thermosetting resin around the locking groove 30 and then thermosetting the thermosetting resin.
It is the first fiber reinforcement that various conventionally known synthetic resins such as epoxy resin can be used as the thermosetting resin, and various conventionally known fibers such as carbon fiber and glass fiber can be used as the reinforcing fiber. The same as the resin layer 14.

As shown in FIG. 2, the lid 20 closes the internal space S by being fitted into the base side opening 32.
The lid 20 includes a large-diameter portion 2002 fitted into the large-diameter hole 3202 and a small-diameter portion 2004 fitted into the small-diameter hole 3204, and a boundary between the large-diameter portion 2002 and the small-diameter portion 2004 An O-ring 34 is interposed between the notch 3206.

Next, the operation and effect of the tank 10 will be described.
In the tank 10, when the pressure outside the tank 10 becomes higher than the pressure in the internal space S, a force in the direction toward the internal space S acts on the lid 20, and the direction toward the internal space S on the annular wall portion 28 of the base 16. The force of acts.
This force acts as a force in the direction of peeling the outer end surface 2804 of the annular wall portion 28 from the portion of the first fiber reinforced resin layer 14 around the second opening 24, in other words, the second opening The first fiber reinforced resin layer 14 around the portion 24 acts in the direction of peeling from the outer end surface 2804 of the annular wall portion 28.
However, the portion around the second opening 24 of the first fiber reinforced resin layer 14 is pressed by the second fiber reinforced resin layer 18 against the inner peripheral portion of the outer end surface 2804 of the annular wall portion 28. The peeling of the portion of the first fiber reinforced resin layer 14 around the second opening 24 from the outer end surface 2804 of the annular wall portion 28 is prevented.
Therefore, it is possible to provide the tank 10 that can prevent the first fiber reinforced resin layer 14 and the cap 16 from being peeled off.

Further, for example, even when the base 16 is made of a material having low chemical strength, such as a glass fiber-containing polyphenylsulfone resin, the base 16 and the first fiber reinforced resin are used. This is advantageous in securing the attachment strength with the layer 14.
That is, it is advantageous in freely selecting the material of the base 16 while ensuring the attachment strength of the base 16.
In particular, when the tank 10 is installed in an aircraft and contains drinking water, the portion of the base 16 that comes into direct contact with the drinking water has no problem in food hygiene, such as the US Food and Drug Administration (FDA). Food and Drug Administration) is required, and it is required not to deteriorate even when disinfected with a disinfectant containing chlorine.
Therefore, in order to secure the attachment strength of the base 16, a material that has high adhesive strength, such as glass fiber nylon 66, but is not approved by the FDA and does not have high resistance to chlorine is used. In order to satisfy the above requirements, it is necessary to take the following measures.
That is, it is necessary to coat the entire surface where the base 16 comes into contact with drinking water with a special paint which is FDA approved and resistant to chlorine. For this reason, there is a disadvantage in that it takes time and the cost of the tank 10 increases.
However, according to the present embodiment, the attachment strength of the base 16 can be ensured even if a material having weak adhesive strength such as FDA-certified polyphenylsulfone resin containing glass fiber is used as it is. For this reason, it is not necessary to coat the base 16 with the above-described dedicated paint, which is advantageous in reducing the cost of the tank 10.

Here, the usage method in case the tank 10 is installed in an aircraft and used for the purpose of containing drinking water will be described.
The tank 10 is installed at an appropriate location in the aircraft with the two base side openings 32 closed by the lid 20 with the longitudinal direction of the tank 10 oriented in the horizontal direction.
An air pipe (not shown) that communicates with the internal space S is provided at a location that faces upward in the middle portion in the longitudinal direction of the tank 10, and the internal space S is located at a location that faces downward in the middle portion in the extending direction of the tank 10. A water pipe (not shown) that communicates is provided.
When drinking water is stored in the tank 10, the water conduit is connected to an external water supply source, and the drinking water is supplied from the water supply source to the internal space S through the water conduit. To do.
If drinking water is stored in the internal space S, the water pipe is disconnected from the water supply source, and the water pipe is connected to a faucet installed in the aircraft. Connecting.
When drinking water is supplied from the tank 10 to a faucet or the like in the aircraft, the air in the tank 10 is supplied by supplying air to the internal space S from the air supply source installed in the aircraft via the air conduit. Pressure is applied to the drinking water, thereby supplying the drinking water to the faucet via the water conduit and the water supply conduit.

Next, a method for manufacturing the tank 10 will be described.
First, the inner liner 12 which has the 1st opening part 22 and in which the internal space S which accommodates a liquid or gas was formed is shape | molded.
As the molding method of the inner liner 12, various conventionally known molding methods such as inflation molding can be used. In the case of inflation molding, a thermoplastic synthetic resin can be used as a synthetic resin constituting the inner liner 12. .

Next, the base 16 communicating with the internal space S is attached to the first opening 22.
The base 16 is attached by adhering the inner end surface 2802 of the annular wall portion 28 of the base 16 and the inner liner 12 portion around the first opening 22 with an adhesive.

Next, the first reinforcing fibers impregnated with the thermosetting resin for forming the first fiber reinforced resin layer 14 are connected to the outer peripheral surface of the inner liner 12 from the outer end surface 2804 of the annular wall portion 28 of the base 16. Wrap in between.
Specifically, the rotating shaft of a conventionally known filament winding apparatus is inserted into the base side opening 32 of the base 16 at both ends of the inner liner 12, and each base 16 is integrated with the rotary shaft via a dedicated jig. Attach to be rotatable.
Then, the first reinforcing fiber impregnated with the thermosetting resin is wound between the outer end surface 2804 of the annular wall portion 28 and the outer peripheral surface of the inner liner 12 while rotating the inner liner 12 around the rotating shaft.
The first reinforcing fiber is wound around the inner liner 12 by, for example, polar winding in which the reinforcing fiber obliquely intersects the rotation axis of the inner liner 12 when viewed from the direction orthogonal to the rotation axis of the inner liner 12. Made.
When the first reinforcing fiber is wound, the inner liner 12 is given an internal pressure by supplying compressed air or the like to the inner space S of the inner liner 12. By doing so, the shape of the inner liner 12 is maintained against the force generated by the winding of the first reinforcing fiber.

Next, the second reinforcing fiber impregnated with the thermosetting resin for forming the second fiber reinforced resin layer 18 is wound around the locking groove 30 of the base 16.
Specifically, the second reinforcing fiber impregnated with the thermosetting resin is wound around the locking groove 30 of the inner liner 12 while rotating the inner liner 12 as in the first reinforcing fiber winding step.
The second reinforcing fiber is wound around the locking groove 30 by, for example, hoop winding in which the second reinforcing fiber is orthogonal to the rotation axis of the inner liner 12 when viewed from the direction orthogonal to the rotation axis of the inner liner 12. Made by.
In the present embodiment, the first and second reinforcing fibers are the same, and the thermosetting resin impregnated in the first and second reinforcing fibers is also the same.

Next, the first reinforcing fiber impregnated with the thermosetting resin is wound around the outer peripheral surface of the inner liner 12 from the outer end surface 2804 of the annular wall portion 28, and the second reinforcing fiber impregnated with the thermosetting resin. The inner liner 12 and the base 16 in which the fibers are wound around the locking groove 30 of the base 12 are removed from the rotary shaft, and the thermosetting resin is cured by heating to a predetermined temperature, and the first fiber reinforced resin layer 14 and A second fiber reinforced resin layer 18 is formed.
More specifically, the first reinforcing fiber that cures the thermosetting resin impregnated in the first reinforcing fiber and the second reinforcing fiber and covers the inner liner 12 with the first reinforcing fiber impregnated with the thermosetting resin. By forming the fiber layer 14 and impregnating the thermosetting resin with the second reinforcing fiber, a portion around the second opening 24 of the first fiber reinforced resin layer 14 is formed on the outer end surface 2804 of the annular wall portion 28. A second fiber reinforced resin layer 18 to be pressed is formed.
As a result, the portion of the first fiber reinforced resin layer 14 around the second opening 24 is attached to the outer end surface 2804 of the annular wall portion 28, and the second fiber reinforced resin layer 18 is attached to the first fiber reinforced resin layer 18. The portion around the second opening 24 of the fiber reinforced resin layer 14 is attached to the locking groove 30 while being pressed against the outer end surface 2804 of the annular wall portion 28.
The tank 10 is completed by fitting the lid 20 to the base side opening 32 of each base 16 and closing the internal space S.

As described above, according to the manufacturing method of the present embodiment, the tank 10 capable of preventing the second fiber reinforced resin layer 18 and the base 16 from being peeled off is impregnated with the first and second impregnated thermosetting resins. 2 can be manufactured by a very simple process of winding the reinforcing fiber 2 around the inner liner 12 and then curing it, which is advantageous in reducing the cost of the tank 10.
Further, the tank 10 that is advantageous in freely selecting the material of the base 16 while securing the mounting strength of the base 16 is used, and the first and second reinforcing fibers impregnated with the thermosetting resin are used as the inner liner 12. It can be manufactured by an extremely simple process of winding and curing, which is advantageous in reducing the cost of the tank 10.
The first reinforcing fiber and the second reinforcing fiber are made of different materials, or a thermosetting resin impregnated in the first reinforcing fiber and a thermosetting resin impregnated in the second reinforcing fiber are used. Different materials can be used.
However, as in the present embodiment, the first reinforcing fiber and the second reinforcing fiber are made of the same material, and the thermosetting resin impregnated in the first reinforcing fiber and the second reinforcing fiber are impregnated. If the thermosetting resin to be made is the same material, the first and second reinforcing fiber winding steps can be performed continuously, so the increase in the number of parts and the number of manufacturing steps can be suppressed, and the cost of the tank 10 can be reduced. It becomes more advantageous in planning.

  DESCRIPTION OF SYMBOLS 10 ... Tank, 12 ... Inner liner, 14 ... 1st fiber reinforced resin layer, 16 ... Base, 18 ... 2nd fiber reinforced resin layer, 20 ... Cover, 22 ... 1st opening , 24 ... second opening, 26 ... base body, 28 ... annular wall part, 30 ... locking groove, 3002 ... cylindrical wall part, 3004 ... standing wall part, 32 ... base Side opening.

Claims (5)

An inner liner having a first opening and having an internal space for containing liquid or gas;
A first fiber reinforced resin layer having a second opening and covering the outer peripheral surface of the inner liner;
A tank comprising a base attached to the inner liner and the first fiber-reinforced resin layer in a state of penetrating the first and second openings, and communicating with the internal space;
The base is
A base body penetrating through the first and second openings;
It bulges from the outer periphery of the base body and is sandwiched between the portion of the inner liner around the first opening and the portion of the first fiber reinforced resin layer around the second opening. An annular wall and
The annular wall portion includes an inner end surface to which a portion of the inner liner around the first opening is attached, and a portion of the first fiber reinforced resin layer around the second opening. An outer end surface to be worn,
The base is further erected from the inner peripheral end of the outer end surface of the annular wall portion in a cylindrical shape centering on the central axis of the base body, and from the entire periphery of the front portion of the bottom wall. With standing walls,
The bottom wall includes an outer peripheral surface inner peripheral portion that forms the inner peripheral portion of the outer end surface, a cylindrical bottom surface that forms the outer peripheral surface of the bottom wall, and a standing surface of the standing wall that faces the inner peripheral portion of the outer end surface. An open locking groove is formed on the radially outer side of the
The outer end surface inner peripheral portion is formed by an inclined surface gradually separating from the standing surface as it reaches the outer side in the radial direction of the bottom surface,
A portion of the first fiber reinforced resin layer around the second opening is attached to the inner peripheral portion of the outer end surface,
In the locking groove in which the portion of the first fiber reinforced resin layer around the second opening is attached to the inner peripheral portion of the outer end surface, a member different from the first fiber reinforced resin layer is used. A second fiber reinforced resin layer is provided,
The second fiber reinforced resin layer is in direct contact with the standing surface and the bottom surface and presses a portion around the second opening of the first fiber reinforced resin layer against the inner peripheral portion of the outer end surface;
In a state where the base body is cut along a plane passing through the central axis of the base body, the length of the second fiber reinforced resin layer contacting the standing surface is such that the second fiber reinforced resin layer is on the bottom surface. Has a dimension larger than the contact length,
A tank characterized by that. On the inner periphery of the base body, a base side opening to which a lid is fitted is provided.
The tank according to claim 1. The liquid is drinking water;
The tank according to claim 1 or 2, wherein The base is formed of a synthetic resin having excellent chemical resistance.
The tank according to any one of claims 1 to 3, wherein the tank is provided. The synthetic resin is a glass fiber-containing polyphenylsulfone resin.
The tank according to claim 4.

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