JP3997439B2 - Dry gas holder sealing membrane mounting structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement in a sealing film mounting structure in a dry gas holder.
[0002]
[Prior art]
As shown in the schematic structure of FIG. 4, the dry gas holder is provided with a piston 2 which can be moved up and down inside a holder body 1 having a cylindrical shape, and an outer peripheral edge 2P of the piston 2 and a holder. A cylindrical sealing film 30 having airtightness and flexibility is stretched between the main body 1 and the peripheral wall 1 </ b> S, and the gas 4 is stored in the lower part of the piston 2.
[0003]
The cylindrical sealing film used in this dry gas holder has one end attached to the inner surface of the peripheral wall of the holder body and the other end attached to the outer peripheral portion of the piston having a shorter circumference than the inner surface of the holder main body. Specifically, the peripheral length is formed to be an intermediate length between the inner surface of the holder main body peripheral wall and the outer peripheral edge of the piston, and the material is a sheet material made of a composite material of a fiber reinforcing material and a synthetic rubber, such as nylon. Formed with a stretchable sheet material coated with a thermoplastic elastomer such as chloroprene rubber on a fiber reinforcement, and one end of the sheet material so formed is extended to the inner surface of the peripheral wall of the holder body and fixed in an airtight manner, and attached. The other end is shrunk to the outer peripheral edge of the piston and is fixed and attached without causing folds or wrinkles.
[0004]
[Problems to be solved by the invention]
As described above, the conventional cylindrical sealing film is attached to the inner surface of the main body wall with the circumference of one end extended, and is attached to the outer peripheral edge of the piston with the circumference of the other end reduced. The work is not easy. In addition, in order to fix the seal film in an airtight manner so as not to cause gas leakage, a seal paste agent or a packing material is used, and the circumferential interval to be stopped by using the seal film restraining bracket and the fixing bolt is also short. Since it had to be constructed, it was complicated and required a lot of work.
[0005]
In addition, the conventional cylindrical sealing film is attached to the inner surface of the main body wall by extending the circumference of one end thereof, and is attached to the outer peripheral edge of the piston by reducing the circumference of the other end. The sheet material was not used because it was difficult to install in an airtight manner.
[0006]
In addition, a conventional sealing film formed of an elastomer such as synthetic rubber generally swells or dissolves easily when it comes into contact with a gas containing an aromatic compound such as benzene, so it must be replaced in a short period of time. In addition, the dry gas holder using the conventional seal film is not suitable for storing a gas containing an aromatic compound, for example, a fuel gas of a coke oven gas.
[0007]
In addition, the coating material of the fiber reinforcing material is formed of a sheet material using a fluorine rubber which is an aromatic compound elastomer and a sheet material using a polyester, polyamide or polyurethane-based aromatic compound thermoplastic elastomer. The use of a sealing film is considered, but none of the sheet materials is widely used due to problems such as high cost, weather resistance, and difficulty in manufacturing.
[0008]
The present invention has been made in view of the above-described problems of the prior art, and it takes time and effort to extend or shorten the circumference between the holder body of the dry gas holder and the piston. A dry type that provides a sealing film mounting structure that is securely fixed without being attached, enables the use of a plastomer sheet material that does not have stretchable rubber elasticity, and also enables the storage of gas containing aromatic compounds The present invention provides a gas holder sealing film mounting structure .
[0009]
[Means for Solving the Problems]
The mounting structure of the seal film of the dry gas holder according to the present invention is as follows:
The dry gas holder has a seal film mounting structure that is mounted between a holder body of the dry gas holder and a piston that is arranged to be movable up and down in the holder body ,
A mounting part to the piston of the sealing film, or a mounting part to the piston of the sealing film and a mounting part to the holder body are provided in a seal cup provided with a sealing liquid,
The attachment part of the seal film to the piston, or the attachment part of the seal film to the piston and the attachment part to the holder main body are fixed by attaching the seal film to the attachment plate in the seal cup and sealed with the sealing liquid. This is the structure.
[0010]
Further, the dry gas holder has a seal film mounting structure that is mounted between a holder body of the dry gas holder and a piston that is arranged to be movable up and down in the holder body.
A mounting part to the piston of the sealing film, or a mounting part to the piston of the sealing film and a mounting part to the holder body are provided in a seal cup provided with a sealing liquid,
The attachment part to the piston of the seal film, or the attachment part to the piston of the seal film and the attachment part to the holder body are structures sealed with the sealing liquid,
The sealing film is formed of a sheet material made of a single plastomer material, or a sheet material made of a combination of a sheet material made of plastomer on the side in contact with stored gas and a sheet material made of elastomer mixed with a fiber reinforcing material. This is a mounting structure of the sealing film of the dry gas holder .
[0011]
DETAILED DESCRIPTION OF THE INVENTION
An example of the embodiment of the present invention will be described with reference to FIGS.
[0012]
As shown in FIG. 1, one end of a cylindrical seal film 3 is attached to the outer peripheral edge 2P of a piston 2 disposed in a holder body 1 having a top-end cylindrical body so as to be movable up and down. An end is attached to the peripheral wall 1 </ b> S of the holder body 1 to provide the seal film 3. An attachment portion 5S for attaching one end of the seal film 3 to the peripheral wall 1S is provided in the seal cup 7S that stores the sealing liquid 6S and is provided on the inner surface of the peripheral wall 1S, and the other end of the seal film 3 Is attached to the piston outer peripheral edge 2P in a seal cup 7P that stores the sealing liquid 6P and is provided on the piston outer peripheral edge 2P.
[0013]
The sealing film 3 formed in a cylindrical shape has a circumferential length that is the inner circumferential surface length of the circumferential wall 1S, and a cylindrical height that does not hinder the operation of the piston 2 that moves up and down, for example, a single layer in FIG. In the case of a shape piston, the height is slightly lower than half the height of the holder body 1.
[0014]
That is, the shape of the sealing film 3 is such that when the gas 4 is stored in the lower part of the piston 2 and the piston 2 starts to rise, the sealing film 3 has a mountain-shaped cross section as shown in FIGS. When the piston 2 is pressed against the second guide plate 2G without causing folds or wrinkles, the seal film 3 is pressed against the inner wall surface of the peripheral wall 1S without causing folds or wrinkles. A cylindrical body having the above dimensions is formed using an airtight flexible thin film sheet having a thickness of millimeter. The guide plate 2G of the piston 2 has a mountain shape or a wave having an uneven surface as shown in FIG. 2, so that the outer peripheral surface has substantially the same peripheral length as the inner peripheral surface length of the holder main body peripheral wall 1S. Form into shape.
[0015]
Further, as shown in FIG. 1, the attachment of the seal film 3 to the peripheral wall 1S is performed by providing the attachment portion 5S in a seal cup 7S provided with a sealing liquid 6S. The seal cup 7S is liquid-tightly attached to the peripheral wall 1S at one end formed in an L-shaped cross section, and provided with a protective tube 8S so that it does not break even if the seal film 3 contacts the other end of the L-shaped cross section. The seal cup 7S is formed in such a shape that a sealing liquid 6S such as water, low-viscosity oil, or high-viscosity grease is stored therein. The amount of the sealing liquid 6S stored in the seal cup 7S is set such that a pressure equal to or higher than the stored gas pressure can be secured on the attachment portion 5S of the seal film 3 as the liquid head pressure.
[0016]
An attachment portion 5S of the seal film 3 provided in the seal cup 7S to the peripheral wall 1S is provided with an opening hole 9S provided in contact with the circumference of one end portion of the seal film 3 and a band provided in the seal cup 7S. A mounting hole 11S formed in the plate-shaped mounting plate 10S is joined and fixed with a bolt and nut 12S. The mounting portion 5S is sealed by the sealing liquid 6S in the seal cup 7S, and the sealing film 3 and the mounting plate 10S. The bolts and nuts 12 </ b> S suppress the detachment.
[0017]
Then, as shown in FIG. 1, the attachment of the seal film 3 to the outer peripheral edge 2P of the piston is performed by providing the attachment 5P in a seal cup 7P provided with the sealing liquid 6P. The seal cup 7P is formed in a groove shape by standing a belt-like plate provided with a protective tube 8P at the tip so as not to be damaged even if the seal film 3 comes into contact with the piston outer peripheral edge 2P. Inside the 7P, similar to the seal cup 7S provided on the peripheral wall 1S, a sealing liquid 6P such as water, low-viscosity oil, or high-viscosity grease is placed on the mounting portion 5P of the seal film 3 as a liquid head. The pressure is stored and formed so that a pressure higher than the stored gas pressure can be secured.
[0018]
An attachment portion 5P of the seal film 3 provided in the seal cup 7P to the outer peripheral edge portion 2P of the piston is located in an opening hole 9P and a seal cup 7P which are continuously provided in contact with each other along the circumference of the other end portion of the seal film 3. The mounting hole 11P formed in the provided strip-shaped mounting plate 10P is joined and fixed with a bolt and nut 12P. The mounting portion 5P is sealed with the sealing liquid 6P in the seal cup 7P, and is attached to the sealing film 3. It is formed in a structure in which the bolt and nut 12P suppresses separation from the plate 10P.
[0019]
As described above, the seal film 3 provided with the attachment portions 5S and 5P of the seal film 3 in the seal cups 7S and 7P provided by storing the sealing liquids 6S and 6P is used for hermetically fixing the attachment portions 5S and 5P. In addition, since it is not necessary to extend one end of the seal film 3 or shrink the other end, the material of the sheet material for forming the seal film 3 is, of course, the use of a conventional sheet material having stretchability. It is also possible to use a plastomer sheet material having no elastic rubber elasticity, for example, a polymer thin film sheet material such as a vinyl chloride sheet material.
[0020]
These plastomer sheet materials generally have a higher strength, higher performance, and lower cost than elastomer sheet materials. For example, a single plastomer plastomer sheet material that is strong against gases containing aromatic compounds. When the sealing film 3 formed using a sheet material made of a material is provided in a dry gas holder, the gas 4 containing an aromatic compound, which has been difficult in the past, can be stored. Thus, if the sealing film 3 of a dry-type gas holder is formed using a plastomer sheet material, economic efficiency and functionality can be remarkably improved.
[0021]
In addition, the sealing film 3 formed as described above also uses a sealing paste or a packing material since the sealing portions 6S and 6P in the sealing cups 7S and 7P seal the mounting portions 5S and 5P. There is no need, and the fastening interval between the bolts and nuts 12S and 12P can be widened, so that they can be easily attached.
[0022]
Further, as shown in FIG. 3, a sheet material 13G made of a single plastomer strong against a gas containing an aromatic compound is provided on the side in contact with the storage gas 4, and on the non-contact side with the storage gas 4, When a sealing film 13 is formed with a sheet material formed by combining and stacking a sheet material 13N made of an elastomer mixed with a conventional fiber reinforcing material, and the sealing film 13 thus formed is provided in a dry gas holder, an aromatic compound is formed. In addition to being able to store the contained gas, the airtightness by the double seal of the two sheet materials 13G and 13N is improved, and the operability of the double structure seal film 13 is assisted by the rubber elasticity of the elastomer sheet material 13N. And the durability of the seal film 13 is further improved.
[0023]
Note that the sealing film 13 formed by the two sheet materials 13G and 13N described above is formed by tightly bonding integrally with an adhesive, heat welding, or the like, so that the sealing film 13 has good operating performance and is integrally bonded. In the case where the sheet is formed by simply superimposing it, only the sheet material on one side can be exchanged during maintenance, so that it is an economical structure.
[0024]
Moreover, in the said embodiment, both attachment part 5S, 5P of the attaching part 5S to the holder main body 1 of the sealing films 3 and 13 and the attaching part 5P to the piston 2 of the sealing films 3 and 13 is sealed 6S. , 6P is provided in the seal cup 7S, 7P provided, but the mounting portion 5S between the seal film 3 of the mounting portion and the holder body 1 with less occurrence of folds and wrinkles is shown in the conventional mounting structure In addition, only the attachment portion 5P of the seal film 3 and the piston 2 may be provided in the seal cup 7P provided with the sealing liquid 6P.
[0025]
【The invention's effect】
As described above, the sealing film mounting structure of the dry gas holder according to the present invention includes the sealing film mounting part to the piston, or the sealing film mounting part to the piston and the mounting part to the holder body. The seal cup is provided in a seal cup for storing liquid, and the mounting portion of the sealing film to the piston, or the mounting portion of the sealing film to the piston and the mounting portion to the holder body are sealed to the mounting plate in the seal cup. Since the membrane is fixedly attached and sealed with the sealing liquid, there is no risk of gas leaking from the seal membrane attachment portion provided in the seal cup. Further, since the sealing film need not be stretched or contracted for airtight fixing, the sealing film can be easily and easily installed. Furthermore, since the sealing liquid in the seal cup seals the mounting portion, it is not necessary to use a seal paste agent or packing material, and since the interval between bolts and nuts can be widened, the mounting portion can be easily mounted.
[0026]
In addition, since it is not necessary to extend or shrink the sealing film, it is possible to use a plastomer sheet material that is highly functional and inexpensive. Also, a sheet material made of a single plastomer material that is strong against a gas containing an aromatic compound, or an elastomer material mixed with a fiber material and a sheet material made of a single plastomer material in contact with the stored gas. In a dry gas holder in which a seal film is formed of a sheet material formed by combining sheet materials and the seal film is provided, a gas containing an aromatic compound, which has been conventionally difficult, can be stored.
[0027]
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional explanatory view showing an example of an embodiment of a seal film of a dry gas holder according to the present invention.
FIG. 2 is a schematic plan view of FIG.
FIG. 3 is a schematic cross-sectional explanatory view showing another embodiment.
FIG. 4 is an explanatory front view showing a schematic structure example of a dry gas holder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Holder body of dry-type gas holder 1S Perimeter wall 2 Piston 2P Outer peripheral edge part 2G Guide plate 3, 13, 30 Seal film 4 Gas 5S Attachment part 5P of seal film to holder main body Attachment part 6S, 6P of seal film to piston Liquid 7S, 7P Seal cup 8S, 8P Protective tube 9S, 9P Open hole 10S, 10P Mounting plate 11S, 11P Mounting hole 12S, 12P Bolt nut 13N Elastomer sheet material 13G Plastomer sheet material

Claims (2)

The holder body dry gas holder, a mounting structure of a sealing membrane of the dry gas holder mounting between the piston which is disposed the holder body to be movable up and down,
Attachment to the piston of the sealing layer, or provided the mounting portion of the piston of the sealing membrane and the attachment to the holder body, into the seal cup provided stored the sealing liquid,
The attachment part of the seal film to the piston, or the attachment part of the seal film to the piston and the attachment part to the holder main body are fixed by attaching the seal film to the attachment plate in the seal cup and sealed with the sealing liquid. A structure for attaching a sealing film of a dry gas holder, characterized in that it has a structure as described above . A dry gas holder sealing film mounting structure that is mounted between a holder body of a dry gas holder and a piston disposed in the holder body so as to be movable up and down.
A mounting part to the piston of the sealing film, or a mounting part to the piston of the sealing film and a mounting part to the holder body are provided in a seal cup provided with a sealing liquid,
The attachment part to the piston of the seal film, or the attachment part to the piston of the seal film and the attachment part to the holder body are structures sealed with the sealing liquid,
The sealing film is formed of a sheet material made of a single plastomer material, or a sheet material made of a combination of a sheet material made of plastomer on the side in contact with stored gas and a sheet material made of elastomer mixed with a fiber reinforcing material. A dry gas holder sealing film mounting structure characterized by

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