JP5391821B2 - High pressure gas tank manufacturing apparatus and high pressure gas tank manufacturing method - Google Patents

Description

  The present invention relates to a high-pressure gas tank for storing gas.

  The high-pressure gas tank may be mounted on a moving body such as a fuel cell vehicle, and the weight reduction is required. As a method for reducing the weight of a high-pressure gas tank, a method for manufacturing a high-pressure gas tank by a filament winding method (FW method) is known. In the method of manufacturing a high-pressure gas tank by the filament winding method, a fiber impregnated with a thermosetting resin such as an epoxy resin is wound around the outer periphery of a relatively lightweight resin tank container, and the thermosetting resin is thermally cured. , Improve the strength of the tank container.

  However, in the filament winding method, air that has entered between fibers gradually moves to the surface of the thermosetting resin layer during the thermosetting process, and bubbles are generated in the thermosetting resin layer. There was a problem. When bubbles are generated in the thermosetting resin layer in the high-pressure gas tank, irregularities due to the bubbles are generated on the outer surface of the high-pressure gas tank. Then, an error occurs in the dimension of the high pressure gas tank, and the assembling property of the high pressure gas tank is deteriorated. Moreover, such irregularities on the outer surface cause a decrease in the design of the high-pressure gas tank. Furthermore, when sticking a display label etc. on the outer surface of a high pressure gas tank, not only the sticking property of a display label will fall, but the visibility of the stuck display label will also fall.

  Until now, various techniques have been proposed in order to suppress the generation of bubbles in the thermosetting process of the filament winding method (Patent Document 1, etc.). However, even with these techniques, generation of bubbles in the thermosetting resin has not been sufficiently suppressed in the thermosetting process.

JP 2003-53853 A

  An object of the present invention is to provide a technique for removing bubbles generated in a thermosetting resin in a high-pressure gas tank manufactured by a filament winding method.

  SUMMARY An advantage of some aspects of the invention is to solve at least a part of the problems described above, and the invention can be implemented as the following forms or application examples.

[Application Example 1]
A high-pressure gas tank manufacturing apparatus that heats the entire tank container in which a fiber-reinforced resin layer is formed on the outer surface by winding fibers impregnated with a thermosetting resin, and heat-treats the fiber-reinforced resin layer. And in the thermosetting process, the temperature of a partial region in the surface layer of the tank container is locally changed, and a gas is blown to the partial region, whereby the surface layer of the tank container A high-pressure gas tank manufacturing apparatus comprising: a bubble removing unit that removes bubbles generated in the container.
According to this high pressure gas tank manufacturing apparatus, in the thermosetting process, by changing the temperature of a partial region of the surface layer of the tank container locally, an unstable state in which bubbles generated in the partial region are easily broken In addition, the bubbles can be broken and extinguished by the wind pressure of the gas. Therefore, in the high-pressure gas tank manufactured by the filament winding method, bubbles generated in the thermosetting resin on the surface of the tank container can be reliably removed.

[Application Example 2]
In the high-pressure gas tank manufacturing apparatus according to Application Example 1, the bubble removing unit locally blows a temperature-adjusted gas to a surface layer of the tank container to the partial region, thereby adjusting the temperature of the partial region. Changing high-pressure gas tank manufacturing equipment.
According to the high-pressure gas tank manufacturing apparatus, the temperature of the partial region of the surface layer of the tank container is locally changed by the temperature-adjusted gas, and an unstable state in which bubbles generated in the partial region are easily broken. In addition, the bubbles can be broken and extinguished by the wind pressure of the gas.

[Application Example 3]
In the high-pressure gas tank manufacturing apparatus according to Application Example 2, the bubble removing unit sprays a high-temperature gas adjusted to a temperature higher than a heating temperature of the tank container by the tank container curing unit onto a surface layer of the tank container. A high-pressure gas tank manufacturing apparatus for locally heating the partial area.
According to the high-pressure gas tank manufacturing apparatus, the temperature of the partial region of the surface layer of the tank container is locally increased by the high-temperature gas, and the decrease in the viscosity of the thermosetting resin in the partial region is promoted. Bubbles generated in the region can be easily broken, and can be broken and extinguished by the wind pressure of the high-temperature gas.

[Application Example 4]
The high-pressure gas tank manufacturing apparatus according to Application Example 2 or Application Example 3, wherein the bubble removing unit alternately blows the first and second gases having different temperatures onto the surface layer of the tank container, A high-pressure gas tank manufacturing device that locally changes the temperature of the region.
According to this high pressure gas tank manufacturing apparatus, the temperature of a partial region of the surface layer of the tank container can be locally raised and lowered alternately by blowing the first and second gases having different temperatures. Then, due to this temperature change, the bubbles generated in the partial region are repeatedly expanded and contracted to make the bubbles unstable and easily broken, and are broken by the wind pressure of the first and second gases. Can foam and disappear.

[Application Example 5]
The high-pressure gas tank manufacturing apparatus according to any one of Application Example 1 to Application Example 4, wherein the bubble removing unit has a gas injection port for injecting the gas, and the gas injection port is A high-pressure gas tank manufacturing apparatus that is movable along the outer surface of the tank container.
According to this high pressure gas tank manufacturing apparatus, since the gas injection port can scan the entire outer surface of the tank container, it is possible to uniformly remove bubbles from the entire tank container regardless of the shape of the tank container. it can.

[Application Example 6]
A method for manufacturing a high-pressure gas tank, comprising:
(A) preparing a tank container having a fiber reinforced resin layer impregnated with a thermosetting resin formed on the outer surface;
(B) While heating and thermosetting the entire fiber reinforced resin layer, the temperature of a partial region in the surface layer of the tank container is locally changed, and a gas is blown to the partial region, whereby the tank Removing bubbles generated on the surface of the container;
A manufacturing method comprising:
According to this high pressure gas tank manufacturing method, in the thermosetting process for thermosetting the fiber reinforced resin layer, by changing the temperature of the partial region of the surface layer of the tank container locally, bubbles generated in the partial region are removed. The air bubbles can be broken and eliminated by the wind pressure of the gas after being in an unstable state in which bubbles are easily broken. Therefore, in the manufacturing process of the high-pressure gas tank using the filament winding method, bubbles generated in the thermosetting resin on the surface of the tank container can be reliably removed.

[Application Example 7]
In the manufacturing method according to Application Example 6, in the step (b), the temperature of the partial region is controlled by locally blowing a temperature-adjusted gas onto the surface layer of the tank container. The manufacturing method including the process to change.
According to this high-pressure gas tank manufacturing method, the temperature of the partial region of the surface layer of the tank container is locally changed by the temperature-adjusted gas, and the unstable state in which bubbles generated in the partial region are easily broken Then, the bubbles can be broken and extinguished by the wind pressure of the gas whose temperature is adjusted.

[Application Example 8]
In the manufacturing method according to Application Example 7, in the step (b), air or water vapor adjusted to a temperature higher than a heating temperature for thermosetting the entire fiber reinforced layer is used as a surface layer of the tank container. The manufacturing method including the step of spraying on and locally heating the partial region.
According to this method for manufacturing a high-pressure gas tank, the temperature of a partial region of the surface layer of the tank container is locally increased by a high-temperature gas to promote a decrease in the viscosity of the thermosetting resin in the partial region. Bubbles generated in the partial region can be easily broken, and the bubbles can be broken and extinguished by the wind pressure of the high-temperature gas.

[Application Example 9]
In the manufacturing method according to Application Example 7 or Application Example 8, in the step (b), the first and second gases having different temperatures are alternately sprayed on a surface layer of the tank container, and the part A manufacturing method including the process of changing the temperature of a field.
According to this high pressure gas tank manufacturing method, the temperature of a partial region of the surface layer of the tank container can be locally changed by blowing the first and second gases having different temperatures. Then, due to this temperature change, the bubbles generated in the partial region are repeatedly expanded and contracted to make the bubbles unstable and easily broken, and are broken by the wind pressure of the first and second gases. Can foam and disappear.

[Application Example 10]
The high pressure gas tank manufacturing apparatus according to any one of Application Example 6 to Application Example 9, wherein the step (b) moves a gas injection port for injecting the gas along a surface layer of the tank container. However, the manufacturing method including the process of spraying the said gas on the surface layer of the said tank container.
According to this method of manufacturing a high-pressure gas tank, the gas injection port can scan the entire outer surface of the tank container, so that the entire tank container can be uniformly removed regardless of the shape of the tank container. Can do.

  The present invention can be realized in various forms. For example, a high-pressure gas tank manufacturing apparatus, a high-pressure gas tank manufacturing method, a computer program for realizing the functions of these methods or apparatuses, and the computer program therefor Can be realized in the form of a recording medium or the like on which is recorded.

The schematic diagram for demonstrating the preparation process of a fiber reinforced tank container. Schematic which shows the structure of the thermosetting processing apparatus of 1st Example. The schematic diagram for demonstrating the bubble removal process of the fiber reinforcement layer surface layer in 1st Example. The schematic diagram for demonstrating the bubble removal process of the fiber reinforcement layer surface layer in 1st Example. Schematic which shows the structure of the thermosetting processing apparatus of 2nd Example.

A. First embodiment:
FIGS. 1A to 1C are schematic views for explaining a part of a manufacturing process of a high-pressure gas tank by a filament winding method as one embodiment of the present invention. FIG. 1A is a schematic diagram showing a tank container 10. In manufacturing the high-pressure gas tank, first, the tank container 10 is prepared as a first step. The tank container 10 is a hollow container having a substantially cylindrical cylinder portion 11 and substantially dome-shaped dome portions 13 provided at both ends thereof. The tank container 10 is made of, for example, a resin such as nylon resin. In addition, the tank container 10 may have another shape and may be configured by other members.

  FIG. 1B is a schematic diagram showing a process of winding the carbon fiber 20 around the outer surface of the tank container 10. In this step, the tank container 10 is attached to the rotation drive unit 110 and rotated about the central axis CX of the cylinder unit 11. Further, the carbon fiber 20 is wound around the outer surfaces of the cylinder portion 11 and the dome portion 13 while the reel 120 around which the carbon fiber 20 is wound is reciprocated along the axial direction of the central axis CX. The carbon fiber 20 is pre-impregnated with an epoxy resin that is a thermosetting resin. This thermosetting resin functions as an adhesive for the carbon fiber 20 by being thermoset by a thermosetting process described later.

  FIG. 1C is a schematic diagram showing the tank container 10 after the carbon fiber 20 is wound thereon. The strength of the tank container 10 is improved by winding the carbon fiber 20 around the outer surface. Hereinafter, the tank container 10 around which the carbon fiber 20 is wound is referred to as a “fiber reinforced tank container 10”. In the fiber reinforced tank container 10, for example, a fiber reinforced layer of carbon fibers 20 is formed with a thickness of about 20 μm to 30 μm with respect to a thickness of a nylon resin container wall of about 3 mm.

  FIG. 2A is a schematic perspective view illustrating a thermosetting processing apparatus 200 that performs a thermosetting process for thermosetting the thermosetting resin of the fiber reinforced tank container 10. In FIG. 2A, a partition 215 that covers the entire apparatus is shown by a broken line. In FIG. 2A, arrows x, y and z indicating three-dimensional directions orthogonal to each other are shown. The arrow z direction coincides with the upward direction of gravity, and the arrow y direction coincides with the axial direction of the central axis CX of the fiber reinforced tank container 10.

  FIG. 2B is a schematic side view of the thermosetting apparatus 200 as viewed from the direction along the x-axis direction of FIG. Note that in FIG. 2B, illustration of the partition wall 215 illustrated by a broken line in FIG. 2A is omitted. FIG. 2B also shows arrows x, y, and z corresponding to the arrows x, y, and z in FIG.

  The thermosetting apparatus 200 includes a base 210, tank mounting parts 221 and 222, a rotation driving part 225, and a bubble removing part 230 in an internal space WS surrounded by a partition wall 215. The tank mounting parts 221 and 222 and the rotation driving part 225 are respectively arranged on the base 210. The tank attachment portions 221 and 222 hold the fiber reinforced tank container 10 from both ends so that the fiber reinforced tank container 10 can be rotated about its central axis CX. The rotation drive unit 225 can rotate the fiber reinforced tank container 10 held by the tank mounting units 221 and 222 in the direction of arrow R at a substantially constant speed.

  The thermosetting apparatus 200 increases the temperature of the internal space WS to about 130 ° C. while rotating the fiber reinforced tank container 10 attached to the tank attaching parts 221 and 222 by the rotation driving part 225 as the thermosetting process. The fiber reinforced tank container 10 is heated for about 7 to 8 hours. Thereby, the thermosetting resin impregnated in the carbon fiber 20 is thermoset. In general, when the thermosetting resin is heated for thermosetting, the viscosity of the thermosetting resin is once lowered and softened until it becomes almost liquid. In addition, when the thermosetting resin is further heated from the softened state, the crosslinking reaction proceeds and is cured.

  Here, the thermosetting resin has a property of shrinking with curing. Therefore, as the curing of the thermosetting resin proceeds, a force acts on the fiber reinforced tank container 10 in a direction in which the tank diameter decreases due to the shrinkage of the thermosetting resin. Therefore, in this thermosetting processing apparatus 200, the pressure inside the fiber reinforced tank container 10 is adjusted by a tank internal pressure adjusting unit (not shown), and the tank diameter is reduced by contracting the pressure and the thermosetting resin. The force acting on the balance is balanced, and the tank diameter is prevented from being reduced in the thermosetting process.

  By the way, in the fiber reinforced layer of the fiber reinforced tank container 10, there are air that has entered between the fibers when the carbon fiber 20 is wound, air that has originally entered the carbon fiber 20, and the like. As described above, in the thermosetting process of the fiber reinforced tank container 10, when the viscosity of the thermosetting resin is relatively lowered, the air entering the fiber reinforced layer moves through the thermosetting resin. It becomes easy to do. Accordingly, in the thermosetting treatment step, bubbles may be generated on the outer surface of the fiber reinforced layer by such air moving in the thermosetting resin toward the surface layer of the fiber reinforced layer.

  If the thermosetting resin is cured while bubbles are generated on the outer surface of the fiber reinforced layer, irregularities due to the bubbles are generated on the outer surface of the fiber reinforced tank container 10. If the fiber reinforced tank container 10 has such irregularities, it may cause a dimensional error of the high-pressure gas tank as a finished product, and the assembling property of the high-pressure gas tank may be deteriorated. In addition, such irregularities on the outer surface may cause a decrease in the design of the high-pressure gas tank. This also causes a reduction in the visibility of the displayed label.

  Therefore, the thermosetting apparatus 200 of the present embodiment is provided with a bubble removing unit 230 for removing bubbles generated on the outer surface of the fiber reinforced tank container 10 during the thermosetting process. The bubble removing unit 230 is attached to the upper side in the gravity direction of the fiber reinforced tank container 10 attached to the tank attaching parts 221 and 222 and includes a nozzle 235 that opens toward the fiber reinforced tank container 10. The bubble removing unit 230 can eject high-temperature air adjusted to a high temperature from the nozzle 235 at a high pressure. Here, “high temperature” means a temperature higher than the temperature increase temperature of the internal space WS of the thermosetting apparatus 200 in the thermosetting process.

  With this configuration, the bubble removing unit 230 blows high temperature air on the outer surface of the fiber reinforced tank container 10 that is rotationally driven during the thermosetting process, thereby breaking and removing the generated bubbles. In the figure, the nozzle 235 blows high-temperature air over the entire cylinder portion 11, but the nozzle 235 can arbitrarily squeeze the hot-air blowing area.

  FIG. 3 is a schematic diagram for explaining bubble removal by the bubble removal unit 230 in the thermosetting process. FIG. 3 is an enlarged schematic cross-sectional view of the broken line region 3 shown in FIG. FIG. 3 shows a partial cross section of the container wall of the fiber reinforced tank container 10, a partial cross section of the fiber reinforced layer 20 </ b> L laminated on the container wall and formed of the carbon fibers 20 and the thermosetting resin 23, and a high temperature. An arrow indicating the direction in which air is blown is schematically shown. The thermosetting resin 23 is in a relatively softened state before being cured.

  As described with reference to FIG. 2, bubbles 25 are generated in the thermosetting resin 23 that has started to soften, and the bubbles 25 gradually move toward the surface layer of the fiber reinforced layer 20L. At this time, hot air is blown from the nozzle 235 of the bubble removing unit 230. The surface layer 23s of the thermosetting resin 23 is heated by the high-temperature air blown, and the decrease in the viscosity of the surface layer 23s is promoted, and the thinning of the surface layer 23s is promoted by evaporation of the liquid component. As a result, the bubbles 25 generated in the surface layer 23s of the fiber reinforced layer 20L are in a state in which bubbles are easily broken. The bubbles 25 that are in a state of being easily broken are broken by the wind pressure of the high-temperature air ejected by the bubble removing unit 230. In this manner, the bubble removing unit 230 can remove the bubbles 25 without directly contacting the thermosetting resin 23. Therefore, it is possible to avoid damaging the outer surface of the fiber reinforced tank container 10 by contacting the thermosetting resin 23 in the bubble removing step.

  The bubble removing process by the bubble removing unit 230 is preferably performed at an initial stage of the thermosetting process before the viscosity of the thermosetting resin 23 starts to decrease and before the viscosity starts to increase. As a result, the reduction of the viscosity of the surface layer 23 s of the thermosetting resin 23 can be further promoted by the heating of the bubble removing unit 230, and the bubbles 25 in a state where bubbles are easily broken can be efficiently removed. .

  Here, the bubble removing unit 230 is movable in the direction along the arrow y in FIG. The bubble removing unit 230 can move in the direction along the arrow z to adjust the distance between the nozzle 235 and the fiber reinforced tank container 10. Accordingly, the bubble removing unit 230 performs bubble removal by jetting high-temperature air while moving along the outer surface of the fiber reinforced tank container 10.

  FIG. 4 is a schematic diagram for explaining the movement of the bubble removing unit 230 in the bubble removing step. FIG. 4 is substantially the same as FIG. 2B except that the movement trajectory of the bubble removing unit 230 is illustrated stepwise. The bubble removing unit 230 moves along the arrow y at a substantially constant speed while displacing the height along the direction of the arrow z so that the distance between the nozzle 235 and the fiber reinforced tank container 10 is kept substantially constant. And hot air is sprayed onto the fiber reinforced tank container 10.

  By the way, when the local heating time of the fiber reinforced layer 20L becomes long, the generation of the bubbles 25 in the local site may be promoted by the heating. However, the bubble removing unit 230 of the present embodiment repeats the injection of high-temperature local air for a short time (for example, about several seconds) that can heat the surface layer 23 s of the thermosetting resin 23, and the entire fiber reinforced tank container 10. Scan. Therefore, according to the bubble removing unit 230, it is possible to suppress the generation of the bubbles 25 by locally heating the hot air more than necessary for a long time.

  In addition, the bubble removing unit 230 maintains the distance between the nozzle 235 and the fiber reinforced tank container 10 substantially constant, so that the cylinder 11 having the same diameter and the dome 13 having the same diameter are similarly bubbled. Can be removed. That is, according to this thermosetting processing apparatus 200, even if the fiber reinforced tank container 10 has a complicated shape having irregularities on the outer surface, it is possible to reliably remove bubbles.

  After the thermosetting process is completed, the fiber reinforced tank container 10 is removed from the thermosetting apparatus 200. A valve or the like is attached to the fiber reinforced tank container 10 to manufacture a high-pressure gas tank. Thus, according to the configuration of the present embodiment, in the thermosetting treatment of the high-pressure gas tank manufactured by the filament winding method, the thermosetting resin layer is avoided while avoiding direct contact with the thermosetting resin. Can be removed more reliably.

B. Second embodiment:
5 (A) and 5 (B) are schematic views showing the configuration of a thermosetting apparatus 200A as a second embodiment of the present invention. FIGS. 5A and 5B are the same as FIG. 2B except that a bubble removing unit 230A having first and second nozzles 235a and 235b is provided in place of the bubble removing unit 230, respectively. It is almost the same. FIG. 5A shows a state in which the first nozzle 235a is injecting hot air, which will be described later, and FIG. 5B shows that the second nozzle 235b injects cold air, which will be described later. It shows the state. A fiber reinforced tank container 10 (FIG. 1) prepared in advance as in the first embodiment is attached to the thermosetting apparatus 200A.

  The first and second nozzles 235a and 235b of the bubble removing unit 230A are nozzles provided in parallel to each other that open toward the fiber reinforced tank container 10 attached to the tank attaching parts 221 and 222, respectively. The first nozzle 235a injects high-temperature air (hot air) similar to that described in the first embodiment, and the second nozzle 235b is relatively lower than the high-temperature air injected from the first nozzle 235a. Injects low-temperature air (cold air) adjusted to the temperature. In FIGS. 5A and 5B, hot air and cold air are distinguished from each other by different hatching.

  In this thermosetting apparatus 200A, when the thermosetting process is started and the viscosity of the thermosetting resin 23 in the fiber reinforced tank container 10 starts to decrease relatively, the first and second nozzles 235a and 235b Hot air and cold air are sprayed alternately. By alternately repeating the heating with the hot air and the cooling with the cold air, the bubbles 25 generated in the surface layer 23s of the thermosetting resin 23 are alternately expanded and contracted. As a result, the bubbles 25 are led to an unstable state, and are more easily broken, and then broken and removed by the wind pressure of hot air or cold air.

  Here, it is preferable that the injection cycle of the hot air and the cold air by the first and second nozzles 235a and 235b is made faster as the viscosity of the thermosetting resin 23 starts to increase. Thereby, even if it is the bubble 25 produced in the thermosetting resin 23 with comparatively high viscosity, it can be made into the state which is easy to bubble-break by shortening the period of expansion | swelling and shrinkage | contraction. In addition, it is so preferable that the temperature difference between the temperature of warm air and the temperature of cold air is large. Further, the temperature of the cold air may be lower than the temperature increase temperature of the internal space WS of the thermosetting apparatus 200A in the thermosetting process.

  As described above, according to the bubble removing unit 230A, the bubbles 25 generated in the surface layer 23s of the thermosetting resin 23 can be reliably removed after being in an unstable state in which bubbles are easily broken. Moreover, according to this bubble removal part 230A, it can suppress that the bubble 25 which generate | occur | produces in the thermosetting resin 23 increases by cooling with the hot air by cooling of the thermosetting resin 23 with cold air. .

C. Variations:
The present invention is not limited to the above-described examples and embodiments, and can be implemented in various modes without departing from the gist thereof. For example, the following modifications are possible.

C1. Modification 1:
In the said 1st Example, the bubble removal part 230 of the thermosetting processing apparatus 200 heated a part of outer surface of the fiber reinforced tank container 10 locally by injecting high temperature air. Further, in the second embodiment, the bubble removing unit 230A of the thermosetting apparatus 200A blows the first and second gases having different temperatures from the first and second nozzles 235a and 235b, thereby reinforcing the fiber. The temperature of a part of the outer surface of the tank container 10 was locally changed. However, the thermosetting processing apparatuses 200 and 200A change the temperature by locally heating or cooling a partial region of the outer surface of the fiber reinforced tank container 10 by other heating means such as a heating wire or cooling means. It is also good. In this case, it is also possible to remove air bubbles by jetting air whose temperature is not adjusted to the partial area.

C2. Modification 2:
In the above embodiment, the bubble removing units 230 and 230A remove the bubbles 25 by jetting air. However, the bubble removing units 230 and 230A may remove the bubbles 25 by jetting the gas other than air while adjusting the temperature. For example, the bubble removing units 230 and 230A may inject steam.

C3. Modification 3:
In the above embodiment, in the bubble removing units 230 and 230A, the distance between the nozzles 235, 235a and 235b and the outer surface of the fiber reinforced tank container 10 by moving along the surface shape of the fiber reinforced tank container 10. The bubble removal was executed while maintaining the air pressure almost constant. However, the bubble removing units 230 and 230 </ b> A may not move along the surface shape of the fiber reinforced tank container 10. In this case, the pressure and temperature of the gas to be injected may be adjusted according to the distance between the nozzles 235, 235a, 235b and the outer surface of the fiber reinforced tank container 10.

C4. Modification 4:
In the second embodiment, the bubble removing unit 230A ejects the first and second gases having different temperatures from the first and second nozzles 235a and 235b, respectively. However, the bubble removing unit 230A may alternately eject the first and second gases having different temperatures from a single nozzle.

C5. Modification 5:
In the above embodiment, the carbon fiber 20 is impregnated with an epoxy resin as a thermosetting resin. However, the carbon fiber 20 may be impregnated with another thermosetting resin. For example, as the thermosetting resin, phenol resin, urea resin, melamine resin, unsaturated polyester resin, or the like may be used.

  Moreover, in the said Example, although the thermosetting resin was previously impregnated to the carbon fiber 20, the thermosetting resin does not need to be impregnated beforehand. For example, the thermosetting resin may be impregnated in the carbon fiber 20 in the step of winding the carbon fiber 20 around the tank container 10.

10 ... Tank container (fiber reinforced tank container)
DESCRIPTION OF SYMBOLS 11 ... Cylinder part 13 ... Dome part 20 ... Carbon fiber 20L ... Fiber reinforcement layer 23 ... Thermosetting resin 23s ... Surface layer 25 ... Air bubble 110 ... Rotation drive part 120 ... Reel 200, 200A ... Thermosetting processing apparatus 210 ... Base 215 ... partition walls 221 and 222 ... tank mounting part 225 ... rotation drive part 230, 230A ... bubble removing part 235 ... nozzle 235a ... first nozzle 235b ... second nozzle WS ... internal space

Claims (6)

A high-pressure gas tank manufacturing device,
A tank container thermosetting unit that heats the entire tank container in which a fiber reinforced resin layer is formed on the outer surface by wrapping fibers impregnated with a thermosetting resin, and executes a thermosetting process of the fiber reinforced resin layer When,
In the thermosetting treatment, the first and second gases having different temperatures are locally and alternately sprayed locally on a partial region of the surface layer of the tank container to locally control the temperature of the partial region. And a bubble removing unit for removing bubbles generated on the surface layer of the tank container,
A high-pressure gas tank manufacturing apparatus comprising: The high-pressure gas tank manufacturing apparatus according to claim 1 ,
The bubble removing unit sprays a high-temperature gas adjusted to a temperature higher than the heating temperature of the tank container by the tank container curing unit as the first gas to the surface layer of the tank container, and the partial region is High-pressure gas tank manufacturing equipment that heats locally. The high-pressure gas tank manufacturing apparatus according to claim 1 or 2 ,
The bubble removing unit has a gas injection port for injecting the first and second gases,
The high-pressure gas tank manufacturing apparatus, wherein the gas injection port is movable along the outer surface of the tank container. A method for manufacturing a high-pressure gas tank, comprising:
(A) preparing a tank container having a fiber reinforced resin layer impregnated with a thermosetting resin formed on the outer surface;
(B) While heating and thermosetting the entire fiber reinforced resin layer, the first and second gases having different temperatures are locally sprayed alternately on a partial region of the surface layer of the tank container. A step of locally changing the temperature of the partial region to remove bubbles generated in the surface layer of the tank container;
A manufacturing method comprising: The manufacturing method according to claim 4 ,
In the step (b), air or water vapor adjusted to a temperature higher than the heating temperature for thermosetting the entire fiber reinforced layer is sprayed on the surface layer of the tank container as the first gas , The manufacturing method including the process of heating a one part area | region locally. The high-pressure gas tank manufacturing apparatus according to claim 4 or 5 ,
The step (b) moves the gas injection ports for injecting the first and second gases along the surface layer of the tank container, and the first and second gases to the surface layer of the tank container. A manufacturing method including the process of spraying.

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