Central drainage structure of external floating roof tank

Abstract

The utility model relates to the technical field of external floating roof tanks, in particular to a central drainage structure of an external floating roof tank, which comprises a tank body, a floating roof structure is slidably mounted in the tank body in the vertical direction, the bottom of the floating roof structure is fixedly communicated with a drainage pipeline, the floating roof structure comprises a floating plate, and a sealing slip ring is fixedly mounted on the side surface of the floating plate. An inner inclined wall is arranged on the upper surface of the sealing sliding ring, a collecting cavity is formed in the floating plate, a plurality of water guiding channels are annularly formed in the edge of the collecting cavity at equal angles, an opening in one end of each water guiding channel communicates with the bottom of the inner inclined wall, and a water collecting pit is fixedly installed in the middle of the bottom side of the floating plate and communicates with the bottom of the collecting cavity. According to the utility model, a traditional floating disc structure in a flat plate state is optimally designed into a cavity structure with a radian and a sunken bottom inside, so that rainwater is guided, rainwater drainage is accelerated, and the situation that the rainwater stays at the floating plate for a long time, accumulated water is generated, and the actual weight of the floating plate is increased is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of external floating roof oil tanks, in particular to a central drainage structure of an external floating roof tank. Background Art

[0002] With the development of large-scale crude oil and refined oil storage tanks at home and abroad, external floating roof tanks have become the preferred structure for large oil tanks. The floating roof floats up and down with the input and output of the stored liquid, and there is basically no gas space between the floating roof and the liquid surface, which basically eliminates evaporation loss. However, since the external floating roof tank is directly exposed to the external environment and the floating plate is lower than the upper edge of the tank body, natural rain and snow will fall on the floating plate and accumulate. When too much rainwater accumulates on the upper surface of the floating plate, it will penetrate into the inner cavity of the tank, and even cause deformation of the floating plate or sinking accidents. Therefore, external floating roof tanks are usually equipped with a special central drainage device.

[0003] Most of the current drainage structures are to open a sump on a flat floating plate. Rainwater on the surface of the floating plate flows into the sump, and then there is a drainage pipe connected to the sump to drain water to the outside of the tank. However, the relatively flat structure of the floating plate itself requires rainwater to accumulate to a certain height before it can flow naturally into the sump under the action of gravity. The surface of the external floating roof is huge, and it takes time for rainwater to flow naturally. When the rainfall is small, rainwater cannot completely cover the entire surface of the external floating plate. Raindrops cannot disperse under the action of surface tension and are difficult to flow to the sump, which leads to water accumulation on the surface of the external floating roof. It is similar to the situation where puddles appear on a flat road and cannot flow into the nearby sewer. Utility Model Content

[0004] The utility model aims to provide a central drainage structure of an external floating roof tank to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A central drainage structure of an external floating roof tank comprises a tank body, a floating roof structure is slidably installed in the tank body in the up and down directions, a drainage pipe is fixedly connected to the bottom of the floating roof structure, the floating roof structure comprises a floating plate, a sealing slip ring is fixedly installed on the side surface of the floating plate, an inner inclined wall is provided on the upper surface of the sealing slip ring, a collecting cavity is provided inside the floating plate, a plurality of water guide channels are provided at equal angles in a circular shape at the edge of the collecting cavity, one end opening of the water guide channel is interconnected with the bottom of the inner inclined wall, a sump is fixedly installed in the middle of the bottom side of the floating plate and is interconnected with the bottom of the collecting cavity.

[0007] Furthermore, the tank body includes a tank body, a base ring is fixedly installed on the inner edge of the opening of the tank body, a base is fixedly installed on the inner surface of the base ring, and a limiting guide rod is fixedly installed between the bottom side of the base and the bottom edge of the tank body.

[0008] Furthermore, the sealing slip ring is provided with guide rod sliding grooves in the up and down directions.

[0009] Furthermore, a dome is fixedly mounted on the upper surface of the floating plate.

[0010] Furthermore, the drainage pipe comprises a metal hose, the lower end of the metal hose is fixedly connected to the steel pipe, and the side surface of the steel pipe is fixedly sleeved with a pipe rack.

[0011] Furthermore, the outer surface of the sealing sliding ring is slidably connected to the inner wall of the tank body, and the limiting guide rod is slidably sleeved to the guide rod sliding groove.

[0012] Furthermore, the upper end of the metal hose is fixedly connected to the bottom of the sump, the steel pipe is relatively fixedly installed on the bottom side of the tank body through a pipe rack, and one end of the pipe rack passes through the side wall of the tank body.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] In rainy weather, rainwater that falls on the edge of the floating plate flows into the water guide channel under the guidance of the inner inclined wall, avoiding long-term contact between the accumulated water and the sliding connection gap between the sealing slip ring and the inner wall of the tank body, reducing the probability of rainwater seeping into the bottom of the floating plate. At the same time, the rainwater is introduced into the collection cavity through the water guide channel, and then guided to the sump through the arc-shaped bottom of the collection cavity, and then discharged through the drainage pipe. The traditional flat floating plate structure is optimized to have a concave cavity structure with an arc bottom inside to guide the rainwater and accelerate its discharge, avoiding it from staying on the floating plate for too long, causing water accumulation and increasing the actual weight of the floating plate.

[0015] The upper surface of the floating plate is designed as an arched structure dome. The curved surface structure of the dome is used to guide the rainwater falling on the floating plate to the bottom of the inner inclined wall where the edge of the dome and the sealing slip ring are interconnected, so that the rainwater cannot stay on the upper surface of the floating plate, thereby accelerating drainage and avoiding water accumulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a sectional view of the overall structure of the utility model;

[0018] Figure 3 It is a cross-sectional view of the floating roof structure in the utility model;

[0019] Figure 4 This utility model Figure 3 Enlarged view of point A in the middle.

[0020] In the figure: 1. tank body; 101. tank body; 102. base ring; 103. base; 104. limit guide rod; 2. floating roof structure; 201. floating plate; 202. sealing slip ring; 203. guide rod slide groove; 204. inner inclined wall; 205. collecting cavity; 206. water guide channel; 207. sump; 208. vault; 3. drainage pipe; 301. metal hose; 302. steel pipe; 303. pipe rack. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figures 1 to 4 In an embodiment of the utility model, a central drainage structure of an external floating roof tank includes a tank body 1, a floating roof structure 2 is slidably installed in the tank body 1 in the up and down directions, a drainage pipe 3 is fixedly connected to the bottom of the floating roof structure 2, the floating roof structure 2 includes a floating plate 201, a sealing slip ring 202 is fixedly installed on the side surface of the floating plate 201, an inner inclined wall 204 is provided on the upper surface of the sealing slip ring 202, a collecting cavity 205 is provided inside the floating plate 201, and a plurality of water guide channels 206 are provided at the edge of the collecting cavity 205 in a circular shape with equal angles, one end of the water guide channel 206 is opened and communicated with the bottom of the inner inclined wall 204, and a sump 207 is fixedly installed in the middle of the bottom side of the floating plate 201 and is communicated with the bottom of the collecting cavity 205.

[0023] Specifically, in rainy weather, rainwater falling on the edge of the floating plate 201 flows into the water guide channel 206 under the guidance of the inner inclined wall 204, avoiding long-term contact between the accumulated water and the sliding connection gap between the sealing slip ring 202 and the inner wall of the tank body 101, thereby reducing the probability of rainwater infiltrating into the bottom of the floating plate 201. At the same time, the rainwater is introduced into the collecting cavity 205 by the water guide channel 206, and then guided to the sump 207 through the arc-shaped bottom of the collecting cavity 205, and then discharged through the drainage pipe 3. The traditional flat floating plate structure is optimized to have a concave cavity structure with an arc bottom inside, so as to guide the rainwater and accelerate its discharge, thereby avoiding staying on the floating plate 201 for too long, causing water accumulation and increasing the actual weight of the floating plate 201. Example

[0024] like Figure 1-2As shown, in the present embodiment, the tank body 1 comprises a tank body 101, a base ring 102 is fixedly mounted on the inner edge of the opening of the tank body 101, a base 103 is fixedly mounted on the inner surface of the base ring 102, a limiting guide rod 104 is fixedly mounted between the bottom side of the base 103 and the inner bottom edge of the tank body 101; a sealing slip ring 202 is provided with a guide rod groove 203 in the up and down directions; the outer surface of the sealing slip ring 202 is slidably connected to the inner wall of the tank body 101, and the limiting guide rod 104 is slidably sleeved with the guide rod groove 203.

[0025] In this embodiment, when the floating plate 201 floats up and down inside the tank body 101 , the guide rod slide groove 203 slides on the side surface of the limiting guide rod 104 to provide limiting guidance for the movement of the floating plate 201 and prevent the floating plate 201 from deflecting.

[0026] like Figure 3-4 As shown, in this embodiment, a dome 208 is fixedly mounted on the upper surface of the floating plate 201 .

[0027] In specific implementation, the upper surface of the floating plate 201 is designed as an arched structure dome 208. The curved surface structure of the dome 208 is used to guide rainwater falling on the floating plate 201 to the bottom of the inner inclined wall 204 where the edge of the dome 208 and the sealing slip ring 202 are interconnected, so that the rainwater cannot stay on the upper surface of the floating plate 201, thereby accelerating drainage and avoiding water accumulation. Example

[0028] On the basis of the first embodiment, in order to supplement the first embodiment, when the rainwater is guided to the sump 207, a specific drainage method through the drainage pipe 3 is provided.

[0029] like Figure 2-3 As shown, in this embodiment, the drainage pipe 3 includes a metal hose 301, the lower end of the metal hose 301 is fixedly connected to the steel pipe 302, and the side surface of the steel pipe 302 is fixedly sleeved with a pipe rack 303; the upper end of the metal hose 301 is fixedly connected to the bottom of the sump 207, and the steel pipe 302 is relatively fixedly installed on the bottom side of the tank body 101 through the pipe rack 303, and one end of the pipe rack 303 passes through the side wall of the tank body 101.

[0030] During specific implementation, the rainwater guided to the sump 207 flows from the metal hose 301 into the steel pipe 302 and finally is discharged to the outside of the tank body 101 .

[0031] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0032] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A central drainage structure of an external floating roof tank, comprising a tank body (1), characterized in that: A floating roof structure (2) is slidably mounted in the tank body (1) in the up-and-down direction, and a drainage pipe (3) is fixedly connected to the bottom of the floating roof structure (2). The floating roof structure (2) comprises a floating plate (201), a sealing slip ring (202) is fixedly mounted on the side surface of the floating plate (201), an inner inclined wall (204) is provided on the upper surface of the sealing slip ring (202), a collecting cavity (205) is provided inside the floating plate (201), a plurality of water guide channels (206) are provided at equal angles in a circular shape at the edge of the collecting cavity (205), one end of the water guide channel (206) is open and is in communication with the bottom of the inner inclined wall (204), and a water collection pit (207) is fixedly mounted in the middle of the bottom side of the floating plate (201) and is in communication with the bottom of the collecting cavity (205).

2. The central drainage structure of an external floating roof tank according to claim 1, characterized in that: The tank body (1) comprises a tank body (101), a base ring (102) is fixedly mounted on the inner edge of the upper opening of the tank body (101), a pedestal (103) is fixedly mounted on the inner surface of the base ring (102), and a limiting guide rod (104) is fixedly mounted between the bottom side of the pedestal (103) and the inner bottom edge of the tank body (101).

3. The central drainage structure of an external floating roof tank according to claim 2, characterized in that: The sealing sliding ring (202) is provided with a guide rod sliding groove (203) in the vertical direction.

4. The central drainage structure of an external floating roof tank according to claim 3, characterized in that: A dome (208) is fixedly mounted on the upper surface of the floating plate (201).

5. The central drainage structure of an external floating roof tank according to claim 4, characterized in that: The drainage pipe (3) comprises a metal hose (301), the lower end of the metal hose (301) and the steel pipe (302) are fixedly connected to each other, and the side surface of the steel pipe (302) is fixedly sleeved with a pipe rack (303).

6. The central drainage structure of an external floating roof tank according to claim 5, characterized in that: The outer surface of the sealing sliding ring (202) is slidably connected to the inner wall of the tank body (101), and the limiting guide rod (104) is slidably sleeved to the guide rod sliding groove (203).

7. The central drainage structure of an external floating roof tank according to claim 6, characterized in that: The upper end of the metal hose (301) is fixedly connected to the bottom of the sump (207), and the steel pipe (302) is relatively fixedly installed on the bottom side of the tank body (101) via a pipe rack (303), with one end of the pipe rack (303) passing through the side wall of the tank body (101).

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