JPH0735399U - Adhesive structure of film for forming detection layer of double shell tank - Google Patents

Abstract

(57) [Abstract] [Purpose] When forming the detection layer of a double shell tank, it prevents the sprayed resin from leaking and sticking to the inner shell tank.
A resin film is attached so that distortion and wrinkles do not occur, and a detection layer having minute voids is formed between the inner shell tank and the resin film. [Structure] In a double shell tank in which the outer shell tank 4 is made of FRP and the inner shell tank 1 is made of steel, a liquid phase portion 1A of the inner shell tank 1
A plurality of polyethylene terephthalate resin films 2 are superposed side by side in the longitudinal direction of the outer periphery by superposing their side end portions, and the resin films 2 are wound in the circumferential direction of the inner shell tank 1. A heat-resistant adhesive tape 3 is attached to the side end of the upper polymerized portion of each resin film 2. The end portions of the resin film 2 are inserted and fixed in the end plate portions 1B at both ends of the inner shell tank 1. The end portion of each resin film in contact with the gas phase portion 1C of the inner shell tank 1 is fixed to the inner shell tank 1 with a heat-resistant adhesive tape 2.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention is for forming a detection layer (hollow layer) for detecting oil leakage in a double-shell tank made of steel on the inside and FRP (fiber reinforced plastic) on the outside in a storage tank installed in a refueling handling place. The present invention relates to a film attachment structure.

[0002]

[Prior art]

 In the double shell tank, a space is provided between the inner shell tank and the outer shell tank in the portion corresponding to the liquid phase portion, and the leakage of oil from the inner shell tank is detected by various means. Conventionally, in a steel double shell tank, this space can be easily formed due to the dimensional difference between the inner and outer tanks. However, in the double shell tank in which the inner shell tank is made of steel and the outer shell tank is made of FRP, In the case of the FRP layer forming method of the outer shell tank, in the case of “Handle-up method” and “Spray-up method”, the outer shell tank is formed by spraying or coating resin. If the resin is directly sprayed or applied on the space, the space cannot be formed.

Therefore, before the FRP layer forming work, a thin resin film is placed on the outer surface of the inner shell tank steel plate to form a void, and the FRP layer is laminated on the thin resin film to form a minute void between the resin film and the inner shell tank steel plate. The method of forming layers has been defined by the industry as a requirement to meet safety standards.

[0004]

[Problems to be solved by the device]

 From the above points, the present invention, when forming the FRP outer shell tank by the "Handle-up method" and the "spray-up method", the portion corresponding to the liquid phase portion between the inner shell tank and the outer shell tank, The resin film for forming the minute void layer that serves as the detection layer does not distort and can be installed uniformly, and the resin film attachment structure prevents resin from adhering to the inner tank when it is sprayed or applied. Is to provide.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention is a double-shell tank in which the outer shell tank is made of FRP and the inner shell tank is made of steel. While the resin films are wound side by side in the circumferential direction, the side edges of each resin film are polymerized, and the side edges of the upper polymerized part of each resin film are attached with heat-resistant adhesive tape. Insert the ends of the resin film into the end plates of both ends of the inner shell tank, and fix the end of each resin film in contact with the gas phase of the inner shell tank to the inner shell tank with heat-resistant adhesive tape. It is characterized by.

[0006]

[Action]

 To explain the operation of the present invention, since the end portions of the resin films which are juxtaposed are overlapped with each other and the overlapped upper end portions are adhered to each other in the circumferential direction by the adhesive tape, the resin film is covered with the resin. Even if it is sprayed or applied, it does not leak from the polymerized portion and adhere to the inner shell tank, and a detection layer having a minute gap between the inner shell tank and the resin film is formed.

Further, since the end portion of the resin film is inserted into the end plate portion of the resin film and the end portion in contact with the vapor phase portion is fixed to the inner shell tank with the adhesive tape, the entire resin film is fixed. Further, since the resin film and the adhesive tape have heat resistance, it is possible to prevent the resin film and the adhesive tape from being distorted by the heat generated when the FRP is solidified. It should be noted that winding the resin films side by side in the longitudinal direction of the tank in the circumferential direction facilitates the work since the sticking can be performed while rotating the tank body.

[0008]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. 1 is a front view showing an embodiment of the structure of the present invention, FIG. 2 is an enlarged partial view of the same structure with a part cut away, and FIG. 3 is a partially longitudinal side view of a double-shell tank having a detection layer formed by the structure of the present invention. It is a figure. 1 is a steel inner shell tank, and several heat resistant resin films 2 such as polyethylene terephthalate are arranged in parallel on the outer circumference of the inner shell tank 1 in the longitudinal direction of the liquid phase portion 1A. It is wound in the circumferential direction. The side end of each resin film 2 overlaps with the adjacent resin film 2.

Then, a heat-resistant adhesive tape 3 made of polyethylene terephthalate or the like is attached to the side end portions of the upper resin films 2 that are overlapped with each other to connect the respective resin films 2. Further, the side end portions of the resin film 2 attached to both ends of the inner shell tank 1 are inserted into the end portions of the end plate portion 1B, and the resin film 2 is in contact with the gas phase portion 1C of the inner shell tank 1 of each resin film 2. A heat-resistant adhesive tape 3 is attached to the end portion of the resin film 2 to fix the resin film 2 to the inner shell tank 1. In the figure, 4 is an FRP outer shell tank, and 5 is a detection layer.

[0010]

[Effect of device]

 According to the present invention, since the connecting portion of each resin film and the entire periphery are fixed by the adhesive tape, the resin film is evenly mounted on the inner shell tank, and the resin is directly applied to the inner shell tank when spraying or applying the resin. It does not adhere to the shell tank, thus forming a sensing layer with a minute gap between the inner tank and the resin film. Further, since the resin film and the adhesive tape use a heat-resistant material, there is no distortion due to heat, no wrinkles are generated on the surface of the resin sheet, and the adhesiveness of the resin is improved.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the structure of the present invention.

FIG. 2 is a partially cutaway enlarged partial view showing an embodiment of the structure of the present invention.

FIG. 3 is a partially longitudinal side view of a double shell tank formed according to the structure of the present invention.

[Explanation of symbols]

 1 Inner Shell Tank 1A Liquid Phase Section 1B End Plate Section 1C Gas Phase Section 2 Resin Film 3 Adhesive Tape 4 Outer Shell Tank 5 Sensing Layer

Claims (1)

[Scope of utility model registration request] 1. A double-shell tank in which the outer shell tank is made of FRP and the inner shell tank is made of steel, and several heat-resistant resin films are juxtaposed in the longitudinal direction of the outer periphery of the liquid phase portion of the inner shell tank. And the side edge of each resin film is polymerized and the side edge of the upper polymerized part of each resin film is affixed with a heat-resistant adhesive tape. The end of the resin film is inserted into the end plate part of the, and the end of each resin film in contact with the gas phase part of the inner shell tank is fixed to the inner shell tank with heat-resistant adhesive tape. Adhesive structure of film for forming detection layer of shell tank.