JP4816737B2 - tank - Google Patents

Description

  The present invention relates to a tank, and more particularly to a tank capable of responding to an external impact on the tank.

The tank filled with gas or high-pressure gas, for example, metal tanks and FRP (Fiber Reinforced Plastics, fiber-reinforced plastic) include a tank, in particular, FRP tanks, because of high wealth Mika single strength and heat resistance, lightweight These are used in high-pressure gas tanks mounted on moving bodies such as automobiles, such as natural gas tanks installed in natural gas automobiles and hydrogen high-pressure gas tanks for fuel cells installed in fuel cell automobiles.

  Further, when the filled gas is consumed, the metal tank and the FRP tank are refilled with gas and reused. On the other hand, the metal tanks and FRP tanks described above generally tend to decrease in strength due to external impacts.

  Therefore, before the gas is refilled, it is necessary to determine whether or not the tank has received a large impact from the outside so that the gas cannot be refilled.

  On the other hand, the following has been proposed as a method for detecting an impact. For example, in Patent Document 1, in a moving body such as an automobile, a motorcycle, or a bicycle, a capsule with a paint is attached to a portion that is easily contacted or a shallow groove at a corner, and an object that contacts or collides with the moving body is disclosed. It has been proposed to apply paint. Further, Patent Document 2 proposes a vehicle body collision detection device that stretches an optical fiber around a vehicle and detects a collision from a change in photoelectric transmission characteristics in the optical fiber. Further, Patent Document 3 proposes a packaging sheet having a buffer protection function that covers the periphery of a drum for winding and packaging an electric cable, and a pressure-sensitive coloring sheet is provided on the outer surface of the packaging sheet. When a wire cable is wound around a drum, the pressure-sensitive color-developing sheet is colored when a local pressure / impact is applied to the drum, and even if the wire cable wound around the drum is not deformed, the local pressure is applied to the wire cable.・ Packaging materials that can detect whether there was an impact have been proposed.

  Note that Patent Document 4 discloses a high-pressure tank provided in the heat storage material.

Japanese Patent Laid-Open No. 2-80467 Japanese Patent Laid-Open No. 5-116592 JP-A-4-251784 JP 2007-16988 A

  In the above-described method of attaching the paint to the colliding partner, it is difficult to leave the strength of the impact on the tank on the surface of the tank, and therefore it is difficult to estimate the damage of the tank from the degree of impact of the tank. In addition, when a method of detecting a collision using a change in photoelectric transmission characteristics in an optical fiber is used for detecting the impact of a tank, the tank itself becomes larger than the tank capacity, and it is difficult to mount it on a vehicle, for example. Also, with packaging sheets that have a pressure-sensitive color-developing sheet on the outermost surface, color development spreads on the sheet even with a slight impact, so it is not possible to determine whether a large impact that cannot be refilled with gas has been applied to the tank. It is difficult and the reuse of the tank may be impaired.

  The present invention has been made in view of the above problems, and provides a tank in which it is easy to determine a large impact that is impossible to refill gas.

  In order to achieve the above object, the tank of the present invention has the following characteristics.

( 1 ) A tank for storing gas, wherein an outermost layer of the tank is provided with an impact recording layer capable of recording deformation due to impact, and the impact recording layer has a heat insulating function and can be deformed and held. A tank having a layer, a dye capsule layer containing capsules provided on the outer surface of the heat insulating material layer, and a dye-absorbing layer provided on the outer surface of the dye capsule layer and capable of absorbing the dye It is.

Since the shock recording layer that can record deformation due to impact is provided on the outermost layer of the tank, it is possible to estimate the degree of impact from the degree of deformation due to impact, and whether or not a large impact has been applied, gas can be refilled It can be determined whether or not. Further, the impact recording layer is provided with a heat insulating function by the heat insulating material layer, and further, the heat insulating material layer is deformed by the impact, and the dye released from the dye capsule layer is absorbed by the dye absorbing layer, and further, the dye absorbs the dye. By oozing out and spreading on the surface of the layer, the magnitude of the impact applied to the tank can be estimated from the degree of spreading of the dye, the degree of shade of the dye, and the degree of deformation of the heat insulating material layer.

( 2 ) A tank for storing gas, wherein an impact recording layer capable of recording deformation due to impact is provided on the outermost layer of the tank, and the impact recording layer includes a dye capsule containing a capsule containing the dye A tank having a layer, a heat insulating material layer provided on the outer surface of the dye capsule layer and having a heat insulating function and capable of being deformed and held, and a dye absorbing layer provided on the outer surface of the heat insulating material layer and capable of absorbing the dye It is.

Since the shock recording layer that can record deformation due to impact is provided on the outermost layer of the tank, it is possible to estimate the degree of impact from the degree of deformation due to impact, and whether or not a large impact has been applied, gas can be refilled It can be determined whether or not. Further, the impact recording layer is provided with a heat insulating function by the heat insulating material layer, and further, the heat insulating material layer is deformed by the impact, and the dye released from the dye capsule layer is absorbed by the dye absorbing layer through the heat insulating material layer. Further, this dye oozes out and spreads on the surface of the dye absorbing layer. Therefore, when the dye spreads in the dye absorbing layer, it is obvious that the dye was a big impact that the dye oozed out to the dye absorbing layer through the heat insulating material layer. Further, the magnitude of impact applied to the tank can be estimated from the degree of shade of the pigment and the degree of deformation of the heat insulating material layer.

( 3 ) A tank for storing gas, wherein an impact recording layer capable of recording deformation due to impact is provided on the outermost layer of the tank, and the impact recording layer contains a capsule containing a dye and has a heat insulating function. And a dye-containing capsule-containing heat insulating material layer that can be deformed and held, and a dye-absorbing layer that is provided on the outer surface of the dye-containing capsule-containing heat insulating material layer and can absorb the dye.

Since the shock recording layer that can record deformation due to impact is provided on the outermost layer of the tank, it is possible to estimate the degree of impact from the degree of deformation due to impact, and whether or not a large impact has been applied, gas can be refilled It can be determined whether or not. Further, the impact recording layer is provided with a heat insulating function, and further, the dye-containing capsule-containing heat insulating material layer is deformed by impact, and the dye released from the dye-containing capsule of the dye-containing capsule-containing heat insulating material layer is dye-absorbing layer. The dye is further oozed out and spreads on the surface of the dye absorbing layer. Therefore, the magnitude of impact applied to the tank can be estimated from the degree of spread of the dye, the degree of shade of the dye, and the degree of deformation of the dye-containing capsule-containing heat insulating material layer.

( 4 ) The tank according to any one of (1) to ( 3 ), wherein the dye is a fluorescent substance.

  By using a fluorescent material as the dye, it is possible to accurately detect the magnitude of the impact and the direction in which the impact is applied from the amount of fluorescence from the fluorescent material exposed on the tank surface and the intensity of the fluorescence.

( 5 ) The tank according to (1 ) , further including a heat storage material layer between an outer surface of the tank body and the heat insulating material layer .
(6) In the tank according to (2), a heat storage material layer is further provided between the outer surface of the tank body and the dye capsule layer.
(7) In the tank according to (3), a heat storage material layer is further provided between the outer surface of the tank body and the pigment-encapsulated capsule-containing heat insulating material layer.

Since a layer of heat storage material is provided, the heat storage material stores the heat generated by the release of thermal energy that accompanies the phase change of the gas stored in the tank, and the phase change is opposite to the phase change. The supercooling due to the absorption of the thermal energy that accompanies is suppressed by the heat stored when the thermal energy is released, while the cold energy is stored by the absorption of the thermal energy that accompanies the phase change, and the phase change and Can suppress the heating due to the release of thermal energy caused by the reverse phase change by the cold energy stored when the thermal energy is absorbed.

( 8 ) The tank according to any one of (1) to ( 7 ) is a high-pressure tank filled with high-pressure gas.

  In a high-pressure tank, particularly, high-pressure gas is filled, so it is important to determine whether or not a large impact that does not allow high-pressure gas filling has been applied.

  According to the present invention, the magnitude of the impact applied to the tank can be estimated, and it can be determined whether or not the gas can be charged.

It is sectional drawing of an example of the tank in the reference 1st Embodiment of this invention. It is sectional drawing of an example of the tank in the reference 2nd Embodiment of this invention. It is a cross-sectional view of an example of a tank according to the first embodiment of the present invention. It is sectional drawing of an example of the tank in the 2nd Embodiment of this invention. It is sectional drawing of an example of the tank in the 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

An example of a tank in Reference first embodiment of the present invention shown in FIG. As shown in FIG. 1, a tank 100 of the present embodiment is a tank for storing gas, and an impact recording layer capable of recording deformation due to impact is provided on the outermost layer of the tank. Further comprises a heat insulating material layer 14 having a heat insulating function. Furthermore, as shown in FIG. 1, the tank 100 of the exemplary reference embodiment, the outer surface of the tank body 10, the heat storage material layer 12 is provided, the heat insulating material layer 14 is provided on the outer surface of the heat storage material layer 12 It has been.

  Examples of the material of the tank main body include a metal such as iron in the case of a normal vertical tank. In the case of a tank mounted on a moving body such as a vehicle, the tank body is light and strong, and FRP (Fiber) Reinforced Plastics (fiber reinforced plastic) or the like is used.

Moreover, the said heat storage material layer 12 stores the heat by discharge | release of the thermal energy produced with the phase change of the gas stored in the tank 100 with a heat storage material, and is accompanied with the phase change contrary to the said phase change. It is preferably a latent heat storage material that suppresses supercooling due to absorption of the generated thermal energy by the heat stored when the thermal energy is released, and stores cold energy by absorption of thermal energy that accompanies the phase change, A latent heat storage material that suppresses heating due to the release of thermal energy generated in association with the phase change opposite to the phase change by the cold energy stored when the thermal energy is absorbed is preferable.

  When the heat storage material layer 12 functions as a cold insulation layer, the heat storage material layer 12 is obtained by gelling or thickening an aqueous solution containing a cryogen and enclosing it in a synthetic resin bag, or impregnating a porous body with an aqueous solution containing a cryogen It is possible to employ a material sealed in a synthetic resin bag, a material in which a porous material is impregnated with a normal temperature gel substance that acts as a cryogen, and the like. As the cryogen, a mixture of parabenzoate ester, calcium hydroxide and carboxymethyl cellulose (CMC) at a predetermined ratio, ethylene glycol, ammonia, or the like can be used. Moreover, as a porous body, elastic foams, such as a urethane foam, are employable.

The heat insulating material of the heat insulating material layer 14, for example, gypsum, plaster, stock, fibers and can be composed of a combination thereof, while have a thermal insulation function, strength of the tank body similar or less intensity And a material that can be deformed and held irreversibly against deformation caused by an external impact. For example, when the diameter of the tank body is 300 mm and the tank body length is 800 mm, the thickness of the heat insulating material layer 14 is preferably 20 mm. If the thickness of the heat insulating material layer 14 is less than 20 mm, only a trace of the same size is left for a certain level of impact, and therefore it is difficult to leave a trace corresponding to the magnitude of the impact. Estimation may be difficult.

An example of the tank in the reference second embodiment is shown in FIG. In addition, the same component as the component demonstrated in the reference 1st Embodiment attaches | subjects the same code | symbol, and abbreviate | omits the description.

As shown in FIG. 2, the tank 200 of this exemplary reference embodiment, a tank for storing the gas, shock recording layer, and variations capable of retaining the heat insulating material layer 14 has a thermal insulation function, insulation layer 14 And a colored layer 22 colored in a color different from the color of the heat insulating material layer 14. Furthermore, as shown in FIG. 2, the tank 200 of this exemplary reference embodiment, the outer surface of the tank body 10, the heat storage material layer 12 is provided, the colored layer 22 is provided on the outer surface of the heat storage material layer 12, The heat insulating material layer 14 is provided on the outer surface of the colored layer 22.

The colored layer 22 may have any color as long as it is different from that of the heat insulating material layer 14, and the material of the colored layer 22 may be, for example, a colored coating film, colored paper or fiber, colored gypsum or Examples include plaster. Since the colored layer 22 is provided directly below the heat insulating material layer 14, from the point where the heat insulating material layer 14 is damaged by an impact, the colored layer 22 directly under the heat insulating material layer 14 is exposed, thereby, the tank surface The degree of impact can be estimated from the color change and the color exposure area.

  A tank according to another embodiment of the present invention is a tank for storing gas, and is provided with a dye capsule layer containing a capsule containing a dye. As a result, the capsule containing the dye in the dye capsule layer is ruptured by impact on the tank, and further, the degree of color development due to the dye on the tank surface changes according to the magnitude of the impact. The magnitude of the impact can be estimated.

  Furthermore, the tank in the above embodiment is further provided with a dye absorbing layer capable of absorbing the dye in the outermost layer of the tank. As a result, the dye released from the dye capsule layer by the impact is absorbed by the dye absorbing layer at the outermost layer of the tank, and further, this dye oozes out and spreads on the surface of the dye absorbing layer, so that the degree of spreading of this dye is increased. In addition, the magnitude of the impact applied to the tank can be estimated from the degree of shade of the pigment.

The tank according to another embodiment of the present invention, with reference to FIGS. 3 to 5, the first respectively the second and third embodiments, the following in its structure will be described. In the first , second, and third embodiments, the same components as those described in the reference first and second embodiments and the above-described embodiments are denoted by the same reference numerals. The description is omitted.

FIG. 3 shows a tank 300 according to the first embodiment. The tank 300 is a tank for storing gas, and the heat storage material layer 12 is provided on the outer surface of the tank body 10, and the heat storage material is shown. An impact recording layer is provided on the outer surface of the layer 12. The impact recording layer includes a heat insulating material layer 14 having a heat insulating function that can be deformed and held on the outer surface of the heat storage material layer 12, and a dye containing a capsule that is provided on the outer surface of the heat insulating material layer 14 and contains the dye. It has a capsule layer 16 and a dye absorbing layer 18 provided on the outer surface of the dye capsule layer 16 and capable of absorbing the dye.

  In the impact recording layer of the present embodiment, a heat insulating function is imparted by the heat insulating material layer 14, and further, the heat insulating material layer 14 is deformed by the impact, and the dye released from the dye capsule layer 16 is absorbed by the dye absorbing layer 18. Further, this dye oozes out and spreads on the surface of the dye absorbing layer 18. Therefore, the dye spreads sensitively to the impact, and it is possible to quickly grasp that the impact has been applied from the degree of spread of the dye, and from the degree of shade of the dye, and further from the degree of deformation of the heat insulating material layer, The magnitude of the impact applied to can be estimated more.

The dye in the dye capsule layer 16 may be any dye. For example, a fluorescent substance is preferable, and by using the fluorescent substance, the magnitude of impact is determined from the amount of fluorescence from the fluorescent substance exposed on the tank surface and the density of the fluorescence. The direction in which the impact is applied and the depth direction of the impact can be detected with high accuracy. Here, as the fluorescent substance, for example, those used as fluorescent dyes or fluorescent paints are suitable. Encapsulation including the dye can be carried out by an ordinary method, and as the capsule membrane material, for example, gelatin, CMC, ethylene-maleic anhydride copolymer, or the like can be used. The strength of the capsule membrane has a burst strength corresponding to the magnitude of the impact to the extent that it can be detected whether or not a large impact that causes damage that cannot be filled with gas is applied.

Further, as the dye absorption layer 18, the dye may be a Ikana shall if absorbable material. However, for example, suitable stock, fibers, gypsum, is made of plaster, or a combination thereof is there.

  For example, when the tank body diameter is 300 mm and the tank body length is 800 mm, the thickness of the impact recording layer comprising the heat insulating material layer 14, the dye capsule layer 16 and the dye absorbing layer 18 is preferably 20 mm. If the thickness of the impact recording layer is less than 20 mm, only traces of the same size and color development due to a certain level of impact can be left, so it is difficult to leave traces and color development according to the magnitude of the impact. It may be difficult to estimate the magnitude of the impact.

Next, FIG. 4 shows a tank 400 according to the second embodiment. The tank 400 is a tank for storing gas, and the heat storage material layer 12 is provided on the outer surface of the tank body 10. The impact recording layer is provided on the outer surface of the heat storage material layer 12. The impact recording layer includes a dye capsule layer 16 containing a capsule containing the dye, a heat insulating material layer 14 provided on the outer surface of the dye capsule layer 16 and having a heat insulating function and capable of being deformed and retained, and a heat insulating material layer. 14 and a dye absorbing layer 18 provided on the outer surface and capable of absorbing the dye.

In the impact recording layer of the present embodiment, a heat insulating function is provided by the heat-insulating material layer 14 that can penetrate the dye, and the heat-insulating material layer 14 is deformed by the impact, and the dye released from the dye capsule layer 16 is heat-insulating material. The dye is absorbed by the dye absorbing layer 18 through the layer 14, and further, the dye oozes out and spreads on the surface of the dye absorbing layer 18. Therefore, when the dye spreads in the dye absorbing layer 18, it is obvious that the dye had a big impact that the dye oozed out to the dye absorbing layer 18 through the heat insulating material layer 14. The magnitude of impact applied to the tank can be estimated from the degree of spread, the degree of shade of the pigment, and the degree of deformation of the heat insulating material layer. That is, the impact can be recorded only for a large impact as compared with the tank 300 in the third embodiment. Further, the heat insulating material layer 14 in this embodiment is made of a material that can be penetrate the dye as described above, gypsum material thereof, for example, mentioned earlier, plaster, stock, fibers and combinations thereof Consists of.

FIG. 5 shows a tank 500 according to the third embodiment. The tank 500 is a tank that stores gas, and the heat storage material layer 12 is provided on the outer surface of the tank body 10, and the heat storage material is shown. An impact recording layer is provided on the outer surface of the layer 12. The impact recording layer includes a dye-containing capsule-containing heat insulating material layer 20 that includes a capsule containing the dye and has a heat insulating function and can be deformed and held, and a dye provided on the outer surface of the dye-containing capsule-containing heat insulating material layer 20. And a dye absorbing layer 18 capable of absorbing the same.

The dye-encapsulated capsule-containing heat insulating material layer 20 is a heat-insulating material in which the dye-encapsulated capsule made of the capsule film material and the dye described in the first embodiment is made of, for example, gypsum, plaster, paper, fiber, or a combination thereof. It is a layer formed by being dispersed in a material.

  Therefore, in the impact recording layer of the present embodiment, a heat insulating function is imparted, and further, the dye-containing capsule-containing heat insulating material layer 20 is deformed by the impact, and is released from the dye-containing capsule of the dye-containing capsule-containing heat insulating material layer 20. The dye is absorbed by the dye absorbing layer 18, and further, the dye oozes out and spreads on the surface of the dye absorbing layer 18. Accordingly, the magnitude of impact applied to the tank can be estimated from the degree of spreading of the dye, the degree of shade of the dye, and the degree of deformation of the dye-containing capsule-containing heat insulating material layer 20.

The tank 500 from tank 100 in the third embodiment from the above reference first, second embodiment and the first embodiment, the strength of the heat insulating material layer 14, also a dye encapsulated capsule membrane strength, dye absorption layer Since the dye absorption rate in 18 is known, the degree of deformation of the heat insulating material layer 14 formed in the tank subjected to the impact (for example, the magnitude of deformation, the depth of deformation, the shape of deformation, etc.) the degree of color development of a dye (e.g., the area of color development of the dye, color shading, color shapes, etc.) from the magnitude of the impact can be accurately measured.

Above reference first, the second embodiments and the first embodiment from the third tank 100 500 in the embodiment of may be used in the high-pressure tank pressure gas is filled. This is because, in a high-pressure tank, since high-pressure gas is filled, it is important to determine whether or not a large impact has been applied to the extent that high-pressure gas filling is impossible.

For example, a high-pressure hydrogen gas tank mounted on a vehicle is normally filled with hydrogen gas at 700 atm. Further, high-pressure hydrogen gas tank are often mounted under the floor of the vehicle, in consideration of the mounting environment, by the degree of impact keep the recordable on the tank, safer refilling the high-pressure hydrogen gas tank can do.

  The tank of the present invention may be any tank as long as it is used for a tank, but is particularly suitable for a tank for high-pressure gas filling, and further suitable for a high-pressure gas tank mounted on a moving body such as a vehicle.

  DESCRIPTION OF SYMBOLS 10 Tank main body, 12 Thermal storage material layer, 14 Heat insulating material layer, 16 Dye capsule layer, 18 Dye absorption layer, 20 Dye inclusion capsule containing heat insulating material layer, 22 Colored layer, 100, 200, 300, 400, 500 Tank.

Claims (8)

A tank for storing gas,
The outermost layer of the tank is provided with an impact recording layer capable of recording deformation due to impact,
The impact recording layer has a heat insulating function and a heat insulating material layer that can be deformed and retained;
A dye capsule layer containing a capsule provided on the outer surface of the heat insulating material layer and containing the dye; and
And a dye absorbing layer provided on the outer surface of the dye capsule layer and capable of absorbing the dye. A tank for storing gas,
The outermost layer of the tank is provided with an impact recording layer capable of recording deformation due to impact,
The impact recording layer includes a dye capsule layer containing a capsule containing a dye, and
A heat insulating material layer provided on the outer surface of the dye capsule layer and having a heat insulating function and capable of being deformed and retained;
And a dye absorbing layer provided on the outer surface of the heat insulating material layer and capable of absorbing the dye. A tank for storing gas,
The outermost layer of the tank is provided with an impact recording layer capable of recording deformation due to impact,
The impact recording layer contains a capsule encapsulating a dye, and has a heat-insulating function and a heat-insulating layer containing a dye-encapsulated capsule,
And a dye-absorbing layer provided on the outer surface of the dye-containing capsule-containing heat insulating material layer and capable of absorbing the dye. In the tank according to any one of claims 1 to 3 ,
The tank, wherein the dye is a fluorescent substance. The tank according to claim 1 , wherein
Furthermore, the tank characterized by the layer of the thermal storage material being provided between the outer surface of the tank main body, and the said heat insulating material layer . The tank according to claim 2,
Furthermore, the tank characterized by the layer of the thermal storage material being provided between the outer surface of the tank main body, and the said pigment | dye capsule layer. The tank according to claim 3,
Furthermore, the tank characterized by the layer of the thermal storage material being provided between the outer surface of the tank main body, and the said pigment | dye inclusion capsule containing heat insulating material layer. The tank according to any one of claims 1 to 7 , wherein the tank is a high-pressure tank filled with high-pressure gas.

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