Sealing device for secondary sealing of outward floating roof tank and outward floating roof tank

Abstract

The invention discloses a sealing device for secondary sealing of an outward floating roof tank and the outward floating roof tank. The sealing device for secondary sealing of the outward floating roof tank comprises a sealing plate (1) and a pressing device (2), wherein the pressing device (2) comprises a circular arc-shaped steel plate (3), a pressing plate (4), a spring (5) and a supporting plate (6), the pressing plate (4) and the sealing plate (1) are stacked, two ends of the spring (5) are connected with the circular arc-shaped steel plate (3) and the supporting plate (6) respectively, and the spring (5) is in an elongation state and can drive the pressing plate (4) to press the sealing plate (1) through the circular arc-shaped steel plate (3). The sealing device for secondary sealing of the outward floating roof tank can realize equipotential connection of a floating tray and the tank wall of the outward floating roof tank, and can keep tight attachment with the tank wall in a long-term operating process, and thereby guaranteeing safe operation of the outward floating roof tank.

Description

technical field

[0001] The invention relates to the field of oil storage equipment, in particular to a sealing device for secondary sealing of an external floating roof storage tank, and also to an external floating roof storage tank. Background technique

[0002] At present, my country's external floating roof storage tanks generally adopt a combination of primary and secondary sealing. Due to the uneven settlement of the storage tank, the surface wear of the sealing rubber, etc., there is a gap between the primary seal and the tank wall, and oil and gas leak into the space between the primary seal and the secondary seal. In addition, when the floating plate slowly descends, the oil product will adhere to the tank wall. Since the external temperature is usually lower than the oil temperature, the oil product will form an oil film, and the oil and gas on the surface of the oil film will volatilize between the primary and secondary sealing devices. A gas-oil mixture is forme...

Examples

Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] A sealing device for secondary sealing of an external floating roof storage tank, comprising a sealing plate 1 and a pressing device 2, the sealing plate 1 is an upright copper plate, and the pressing device 2 includes an arc-shaped steel plate 3, a pressing plate 4, and a spring 5 and supporting plate 6, pressing plate 4 and sealing plate 1 are stacked, the upper end of arc-shaped steel plate 3 is connected and fixed with pressing plate 4, the upper end of supporting plate 6 is connected and fixed with sealing plate 1, and the two ends of spring 5 are respectively connected with The arc-shaped steel plate 3 is connected to the support plate 6, the spring 5 is in an extended state, and t...

technical field

[0001] The invention relates to the field of oil storage equipment, in particular to a sealing device for secondary sealing of an external floating roof storage tank, and also to an external floating roof storage tank. Background technique

[0002] At present, my country's external floating roof storage tanks generally adopt a combination of primary and secondary sealing. Due to the uneven settlement of the storage tank, the surface wear of the sealing rubber, etc., there is a gap between the primary seal and the tank wall, and oil and gas leak into the space between the primary seal and the secondary seal. In addition, when the floating plate slowly descends, the oil product will adhere to the tank wall. Since the external temperature is usually lower than the oil temperature, the oil product will form an oil film, and the oil and gas on the surface of the oil film will volatilize between the primary and secondary sealing devices. A gas-oil mixture is forme...

Examples

Embodiment Construction

[0024] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0025] A sealing device for secondary sealing of an external floating roof storage tank, comprising a sealing plate 1 and a pressing device 2, the sealing plate 1 is an upright copper plate, and the pressing device 2 includes an arc-shaped steel plate 3, a pressing plate 4, and a spring 5 and supporting plate 6, pressing plate 4 and sealing plate 1 are stacked, the upper end of arc-shaped steel plate 3 is connected and fixed with pressing plate 4, the upper end of supporting plate 6 is connected and fixed with sealing plate 1, and the two ends of spring 5 are respectively connected with The arc-shaped steel plate 3 is connected to the support plate 6, the spring 5 is in an extended state, and t...

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