SU1440814A1 - Storage reservoir for petroleum products - Google Patents

Abstract

The invention relates to storage equipment for volatile petroleum products. The purpose of the invention is to improve the ease of operation when inspecting and repairing the drainage system by allowing free access and eliminating the harmful effects of oil product vapors. The invention allows the repair and inspection of the drainage system when the oil product is not completely drained from the reservoir. The tank is equipped with upper and lower cylindrical shells installed respectively on the floating roof and the bottom of the tank body. The shells are installed so as to form a common internal cavity and interact with each other through an annular sealing device. In the floating roof, a hatch is made for access to the drainage system, and a water inlet and outlet pipe is installed in the wall of the lower cylindrical shell. 3 il. with 5fi (L

Description

4ib f

About 00

f

The invention relates to equipment for the storage of volatile oil products.

The purpose of the invention is to increase the ease of operation when inspecting and repairing the drainage system by allowing free access and eliminating the harmful effects of oil product vapors. fo

Equipment of the tank with the lower and upper cylindrical shells installed respectively on the bottom of the tank and the lower plane of the floating clamp, in combination with the ring ring; 5, a sealing device between them provides the possibility of carrying out routine work with the drainage system even in the presence of a residue of oil product in the tank. 20

Figure 1 shows a section of a part of the tank; in FIG. 2, node I. in j fig .; FIG. 3 is a sectional view of FIG. one.,

The tank for storing petroleum products comprises a housing 1. with a bottom 2 25 and a floating roof 3 with a central opening 4. The drainage system is made in the form of separate movable pipelines 5 and 6 and a fixed pipe 7. Pipelines 5, 6 and 30

7 are connected to each other in series and with the central hole 4 in the floating roof 3 by means of hinges, with movable pipelines

5 and 6 are installed with the possibility of 35 being laid inside the lower cylindrical shell 8, mounted on the bottom 2 of the tank body. On the lower plane of the floating valve 3, the upper cylindrical shell 9, B is floating concentric with its central opening 4, B is floating (its roof 3 in the plane bounded by the upper cylindrical shell 9, has a hatch 10 for access to the drainage section). On the outer cylindrical the surface of the lower cylindrical shell 8 is fitted with an annular sealing device 1 I coaxially A (: the upper cylindrical shell 9 with the possibility of interaction with the inner cylindrical surface of the latter. In the wall of the lower cylinder 8-cylindrical mantle tube 12 is mounted for supplying and discharging water into the internal cavity 13 of cylindrical shells

8 and 9.

The tank works as follows.

When filling and emptying the tank, the floating valve 3, being on the surface of the product, moves along the height of the tank, respectively, up and down. The maintenance of the drainage system, for example, for its inspection and maintenance, is performed by pumping out the product stored in the tank before the floating roof 3 is seated on the bottom 2 of the tank and then to the level of the lower end of the upper cylindrical shell 9. At the same time, inside the cylindrical shells 8 and 9, an internal cavity 13 is formed with a vapor-air section in its upper part, which is formed due to the discharge of the product from the cavity 13 through the annular sealing device 11. The discharge of the product from the strips and 13 is due to minute otzha- koltsevog about ugshotnitelnogo Device for p oystva 11 of the sleeve 9 under the influence of hydrostatic pressure, finding luminant vshe level of the upper end of the lower cylindrical shell 8.

Then, by filling the cavity 13 with water, the branch pipe 12 for supplying and discharging water is released from the product remaining in it (emptying the cavity 13 from the water pumped into it is carried out by pumping it back through the branch pipe 12). When the cavity 13 is filled with water, the product displaced by it flows through the annular sealing device 11 under the influence of the hydrostatic pressure of the product emerging above the upper end of the shell 8.

 the complete emptying of the space 13 from the product and the water opens the hatch 1Q and with the worker entering the cavity 13, technical maintenance of the drainage system is carried out.

The stiffness of the annular sealing device 11 is chosen such as to ensure the flow of oil through it under the influence of a moderate hydrostatic pressure and prevent the passage of oil product vapors. At the same time, due to the hermetic closure of the gap between the shells 8 and 9 by the annular sealing device 1I, there is no gas content in the cavity 13, i.e. Ensuring safe work conditions.

At the end of the inspection and elimination of the detected defects of the drainage system, the hatch 10 is tightly closed and pierce the cylindrical shells installed respectively on the bottom of the tank and the bottom plane.

They continue the further operation of the reserve tank, ring seal, Formulas

the invention

A hatch for accessing the drainage system is made in the floating roof with a water supply and drain pipe, an annular sealing device is fixed on the outer cylindrical surface of the lower shell, and a water inlet and drain branch pipe is installed in the wall of the lower cylindrical shell. mounted concentric with the hole in the floating roof with the ability to interact with its inner surface with an annular sealing device, and the piping of the drainage system zmescheny inside the lower cylindrical shell.

A reservoir for storing petroleum products, including a housing with a bottom floating core with a central hole and a drainage system, filled in the form of pipelines connected in series with each other and with a hole in the floating panel, characterized in that, in order to improve the convenience of operation, when viewed and repair of the drainage system by ensuring the possibility of free access and eliminating the harmful effects of oil product vapors, it is provided with a bottom and top

A hatch for accessing the drainage system is made in the floating roof with a water supply and drain pipe, an annular sealing device is fixed on the outer cylindrical surface of the lower shell, and a water inlet and drain branch pipe is installed in the wall of the lower cylindrical shell. mounted concentric with the hole in the floating roof with the ability to interact with its inner surface with an annular sealing device, and the piping of the drainage system zmescheny inside the lower cylindrical shell.

I

Phie. i

Xx

BUT

V

f2

Ji 3

Claims (1)

Claim A tank for storing petroleum products, including a housing with a bottom, 10 a floating roof with a central hole and a drainage system made in the form of pipelines connected in series with each other and with a hole in the floating roof, characterized in that, in order to improve ease of use when inspecting and repairing the drainage system by providing free access and eliminating the harmful effects of oil vapor at the same time, it is equipped with lower and upper cylindrical shells set accordingly Actually, on the bottom of the tank and the lower plane of the floating roof, with an annular sealing device and a water inlet and outlet pipe, a hatch is made in the floating roof for access to the drainage system, an annular sealing device is mounted on the outer cylindrical surface of the lower shell, and a water inlet and outlet pipe is installed in the wall of the lower cylindrical shell, while the upper cylindrical shell is mounted concentrically to the hole in the floating roof with the possibility of interaction of its inner surface NOSTA annular sealing device and the pipes of the drainage system placed inside the lower cylindrical shell.