RU2444469C1 - Tank for oil products - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention relates to design of tanks and may be used in petrochemical and oil processing industries. Tank water drain system comprises stationary vertical made up of perforate pipe with its stopped bottom face tightly attached to tank bottom and drain pipeline while perforated section passes through water receiving bowl of floating roof. Note here that vertical perforated part is encased in corrugated shell with its top branch pipe rigidly secured to the wall of aforesaid bowl while bottom branch pipe is rigidly secured to post, right below said perforations.

EFFECT: simplified design and higher reliability.

6 dwg

Description

The invention relates to reservoir engineering. It can be used in the construction of a tank with a floating roof and a spillway system.

A known oil tank (RF patent No. 2239590, class B65D 88/38 of 2004), comprising a housing, a floating roof and a spillway system of a flexible sleeve equipped with a springy guide, and the flexible sleeve in the middle of the length is equipped with a rigid arcuate rotary insert.

The disadvantage of the invention is that such a spillway system is bulky and unreliable, the bending of the flexible sleeve is difficult to fit between the racks of the floating roof, any flexible element quickly fails.

Improving the reliability of the spillway system from the surface of the floating roof of the tank is an urgent task.

The technical result leading to the solution of the task is to increase the reliability and efficiency of the spillway system with a floating tank roof.

The specified technical result is achieved by the fact that in the known reservoir for an oil product, comprising a housing, a floating roof, a spillway system and a drainage pipe laid on the bottom of the reservoir, which is exposed to the outside of the tank wall, according to the invention, the spillway system includes a vertical fixed stand made in the form of a perforated pipe , the lower muffled end of which is hermetically attached to the bottom of the tank and the drain pipe, and the perforated part of it is passed through the water intake cup a floating roof, and the perforated part of the vertical rack is enclosed in a corrugated casing, the upper pipe of which is fixedly attached to the water intake cup, and the lower pipe is fixedly attached to the column below the perforation holes.

In addition, the corrugated casing can be made integral and includes upper and lower nozzles, to the flanges of which are attached flexible elements made in the form of washers from a gas-oil and oil-resistant, for example, rubber fabric, the inner and outer edges of which are hermetically pressed against each other by means of rigid rings with a profiled surface in the form of concentric protrusions or grooves from the side of flexible elements. The outer, as well as intermediate rigid rings and edges of the flexible elements are hermetically pressed by special small-sized screw connections or rivets, and the sharp edges of the outer pressure rings in the places of bending of the flexible elements are rounded. In this case, the intermediate rings can be replaced with thin layers of special glue.

The implementation of the spillway system in the form of a perforated pipe enclosed in a corrugated casing and fixedly connected to a drainage pipe brought out of the tank wall eliminates the need for flexible, movable bulky elements (like the prototype) creating a gutter.

The implementation of the corrugated casing composite allows the device to drain the stainless steel system, before the domestic industry has mastered the production of corrugated pipes from highly elastic durable polymeric materials.

The implementation of the outer and intermediate clamping rings with a profiled surface in the form of concentric grooves or protrusions and rounding of sharp edges at the places of bending of flexible elements increases the tightness and reliability of the corrugated casing and the entire drainage system of the tank.

The presence of a corrugated casing reliably isolates the spillway system from the ingress of oil into it at any position of the floating roof.

The pressing of the flexible elements of the corrugated casing by means of rigid rings and special small-sized screw connections or rivets, in addition to ensuring tightness, makes it possible to freely fold (in height) the corrugated casing under the floating roof located on the supporting posts. Replacing intermediate hard rings with substitutes for them from a special gas-resistant adhesive reduces the total height of the parts to be joined, the total weight of the composite casing and simplifies its assembly.

Figure 1 shows a General view of the tank with a spillway system using a corrugated casing, section.

Figure 2 - the same, using a composite corrugated casing.

Figure 3 - node I in figure 2.

Figure 4 - node II in figure 2.

In Fig.5 - node III in Fig.3, a variant with screw connections, outer and intermediate rigid rings with a perforated surface in the form of concentric protrusions.

In Fig.6 - node III in Fig.3, a variant with rivets, external rigid rings with a perforated surface in the form of concentric grooves and fastening flexible elements to each other, made in the form of washers from a gas-and oil-resistant fabric, using special glue.

The present invention (a reservoir for an oil product) includes a housing (wall) 1, a floating roof 2 (a - in the upper position; b - in the lower position), a vertical strut (pipe) 3, corrugated casing 4 (a - in the extended state; b - in a compressed state), a drainage pipe 5, laid on the bottom of the tank 6 and brought out of the wall 1 of the tank (figure 1).

The composite corrugated casing (Fig. 2) includes nozzles 7 and 8 with flanges 9 and 10 (Figs. 3 and 4), flexible elements 11 made, for example, of a gas-and oil-resistant, rubber-fabric conductive fabric such as a conveyor belt, external rigid rings 12 in contact with the flexible elements 11, the surfaces of which (rings 12) are profiled in the form of concentric protrusions (Fig. 5) or grooves (Fig. 6), and their sharp edges are rounded at the bending points of the flexible elements. The edges of the elastic elements 11 with the help of the outer 12 and intermediate 13 rings and small-sized special screw connections 14 and 15 (Fig. 5) or rivets 16 (Fig. 6) are hermetically pressed against each other, and the hard intermediate rings 13a (Fig. 5) between elastic elements 11 can be replaced by layers 13b of special glue (Fig.6). On the surface of the floating roof 2, a water intake cup (funnel) 17 is installed.

The proposed reservoir for an oil product with a spillway system operates as follows.

Water from the surface of the floating roof 2 flows into the water intake cup (funnel) 17, through the holes in the wall of the vertical rack (pipe) 3 and the corrugated casing 4 flows into the drain pipe 5 and then beyond the body (wall) 1 of the tank (for example, into the sewer) . When moving the floating roof 2 down to position 2b, the corrugated casing 4 is folded (compressed) from position 4a to position 4b. The channel for the drain of water is preserved. When moving the floating roof 2 up to position 2a, the corrugated casing 4 is stretched to position 4a (Fig. 1 and Fig. 2). Tests of the composite corrugated casing (figure 2) on a special programmed stand showed the reliability of its work and the reality of its introduction into production.

Claims (2)

1. The reservoir for the oil product, including a housing, a floating roof, a spillway system, a drainage pipe laid on the bottom of the tank, which is displayed outside the wall of the tank, characterized in that the spillway system includes a vertical fixed rack, made in the form of a perforated pipe, the lower muffled end of which hermetically attached to the bottom of the tank and the drainage pipe, and its upper part is passed through the water intake bowl of the floating roof, and the perforated part of the vertical rack is closed on the corrugated casing, the upper pipe of which is fixedly attached to the water intake cup, and the lower pipe is fixedly attached to the rack below the perforation holes. 2. The reservoir for the oil product according to claim 1, characterized in that the corrugated casing is made integral and includes upper and lower nozzles, to the flanges of which are attached flexible elements made in the form of washers from benzo-oil-resistant, for example, from rubber fabric, cloths, internal and external the edges of which are hermetically pressed against each other by means of rigid rings with a profiled surface in the form of concentric protrusions or grooves on the side of the flexible elements, external, as well as intermediate rigid rings and edges of the flexible elements hermetically pressed by special small-sized screw connections or rivets, and the sharp edges of the outer pressure rings in the places of bending of the flexible elements are rounded, while the intermediate rings can be replaced with thin layers of special glue.

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