RU196753U1 - Device for draining commercial water from an oil tank - Google Patents

Abstract

A utility model relates to a device for draining commercial water from tanks intended for storing oil or oil products. The technical result of the utility model is to provide a more complete discharge of produced water from the tank at low negative air temperatures. Features of the utility model: oblique cut at the end of the bent end of the receiving pipe is made with ellipticity from 0.5 to 0.7; a removable heat shield made with a hatch and double walls, between which a two-component foam is placed; the use of steam, water, oil and other liquid media as a coolant in a heating jacket of a ball valve. 5 cp f-ly, 1 Fig.

Description

A utility model relates to a device for draining commercial water from tanks intended for storing oil or oil products.

The prior art device for draining commercial water from an oil tank (patent for utility model RU 8075 U1, publ. 16.10.1998, IPC: F16T 1/00), comprising a through-tap, a turning handle, an oil seal housing, flanges and a suction pipe.

The disadvantage of this technical solution is the possibility of partial clogging of the suction pipe with slurry elements of produced water and / or snow-ice formations due to the small gap between the suction pipe cut and the bottom of the tank, and the lack of heating of the inlet valve. This leads to an increase in the discharge time of produced water, especially when using the device at low temperatures.

Also known is a drainage device (patent RU 2123152, publ. 10.12.1998, IPC: F16T 1/00) containing a swivel inlet pipe, a rotary handle, sealing elements, a crane with a cover and a protective casing suspended from the mounting element, and the cavity of the casing is provided a nozzle for supplying heat.

The disadvantage of the drainage device is the possibility of clogging of the suction pipe with settling elements and / or snow-ice formations at the lower level of the tank due to the small gap between the slice of the receiving pipe located parallel to the bottom of the tank, which makes it difficult to completely empty the tank from produced water. In addition, the heating efficiency when using the device at low negative temperatures is insufficient due to the large area of heat dissipation by the protective casing, which also makes it difficult to empty the tank from produced water, as a result of which it is impossible to drain all produced water.

The technical task of the proposed solution is to create a reliable device for the complete discharge of bottom water, capable of functioning in various climatic conditions.

The technical result of the utility model is to provide a more complete discharge of produced water from the tank at low negative air temperatures.

To solve the problem and achieve the technical result, a device is proposed for draining produced water from the tank, containing flanges with an oil seal mounted on the wall of the tank, a receiving pipe with a bent end passing through the flanges with an oil seal, a tap installed at the end of the receiving pipe, the first rotary a handle mounted on the inlet pipe between the flanges and the valve, moreover, a ball valve with a heating jacket is used as a valve, the outlet of the valve is connected to a branch pipe, which the second rotary handle is rigidly fixed, the outlet pipe is rigidly connected to the output branch allowing rotation relative to the receiving pipe, the bent end of which has an oblique cut, while the flanges with the stuffing box, the first rotary handle, the ball valve, the outlet of the pipe into the ball valve are closed with a removable a heat shield attached to the tank wall.

Other features of this utility model are that:

- oblique cut at the end of the bent end of the receiving pipe is made with an ellipticity from 0.5 to 0.7;

- a removable heat shield is made with a hatch and double walls, between which a two-component foam is placed;

- the flange oil seal is made in the form of a sleeve with internal grooves placed on it, in which bronze rings are installed;

- flanges with an oil seal contain a limiter of rotation of the receiving pipe;

- steam, water, oil and other liquid media are used as a heat carrier in the heating jacket of a ball valve.

The implementation of the bent end of the receiving pipe with an oblique cut and the presence of a heat shield to close the flanges with the gland, the first rotary handle, the ball valve and the inlet of the outlet pipe into the ball valve will allow the complete discharge of produced water from the tank at negative air temperatures.

The utility model is illustrated by the attached drawing (Fig.), Which indicates:

1 - receiving pipe;

2 - reservoir;

3 - tank wall;

4 - flanges with an epiploon;

5 - the first rotary handle;

6 - ball valve with a heating jacket;

7 - thermal screen;

8 - outlet pipe;

9 - second rotary handle;

10 - output tap.

A ball valve with a heating jacket as standard is used as a crane in the device. The tap is a stop valve providing complete closure or opening of the movement of produced water, which contains contaminants, suspended solids, oil products, and at low freezing temperatures and snow and ice formations. The heating jacket provides the possibility of heating with the help of a heating medium (steam, water, oil and other liquid media) produced water at a temperature higher than the melting temperature and thereby ensure its discharge from the tank.

The receiving pipe 1 has an end bent at an angle from 120 ° to 135 ° relative to the longitudinal axis and has an oblique cut. The receiving pipe 1 is installed outside and in the internal cavity of the tank 2 and is attached to the wall 3 using flanges 4 with gaskets at such a height from the bottom of the tank 2 so that the end face of the bent end in its lower position is located in a plane at a given angle to the bottom of the tank 2.

An oblique cut at the end of the bent end of the receiving pipe 1 is made with an ellipticity from 0.5 to 0.7, depending on the angle of bending relative to the longitudinal axis of the receiving pipe. Such a design of the end of the receiving pipe increases the gap between the cut of the suction pipe and the bottom of the tank and facilitates the absorption of contaminated bottom water and snow-ice formations, especially when operating the device at low negative ambient temperatures. The ellipticity value is selected empirically for typical operating conditions.

At the other end of the inlet pipe 1, a ball valve with a heating jacket 6 is fixed, equipped with a handle for opening / closing the channel of the inlet pipe 1 and the outlet pipe 8. At the same time, the first rotary handle 5 is fastened between the ball valve 6 and the flanges with the stuffing box 4. , designed to ensure rotation of the receiving pipe 1 around its longitudinal axis.

An outlet tube 8 is connected to the output of the ball valve 6, on which a second rotary handle 9 is rigidly fixed, the outlet tube, in turn, is rigidly connected to the outlet outlet 10, which makes it possible to independently rotate the outlet outlet 10 relative to the receiving pipe 1.

A removable heat shield 7 is attached to the wall 3 of the tank 2 with screws and is designed to be placed around flanges with an oil seal 4, the end of the inlet pipe 1 passed through them with the first rotary handle 5 and a ball valve fixed on it 6. The walls of the heat shield 7 are double and the space between them is filled with two-component foam.

The gland of the flanges 4 is made in the form of a sleeve with internal grooves placed on it, in which mounted bronze rings to reduce the frictional force when turning the receiving pipe 1. Flanges with the oil seal 6 contain a rotation limiter (not shown in Fig.) Of the receiving pipe 1.

A device for draining produced water from a tank works as follows.

If necessary, remove the produced water that appears during the operation of the tank 2, the receiving pipe 1 using the first rotary handle 5 is rotated around its longitudinal axis so that its bent end is inside the layer of produced water. The ball valve 6 is opened, and the produced water through the discharge pipe 8 begins to merge into the industrial rainwater drainage system at the output branch 10. In this case, as the produced water is removed from the tank 2, the bent end of the receiving pipe 1 is set to the lower position. In this case, the oblique cut at the end of this bent end is in close proximity to the bottom of the tank 2 at a given angle to the bottom of the tank, and due to this, the produced water is completely removed. After that, the ball valve 6 is closed.

If the tank 2 is operated at low temperatures, the heat shield 7 prevents the freezing of the channel in the receiving pipe 1 and the ball valve 6. Moreover, in case of freezing of the ball valve 6, it is possible to connect a mobile or stationary heat source, which is connected to the heating jacket of the ball valve using fittings and sleeves (not shown in FIG.).

The thermal screen is made with a hatch (not shown in Fig.), Which has the ability to rotate around the longitudinal axis, thereby facilitating inspection and maintenance of the device without removing the screen. When a mobile or stationary heat source is connected, the heat shield is in the closed state, and the double walls of the latter allow longer heat to be stored in the inner cavity of the screen, thereby ensuring complete drainage of produced water from the tank.

The output branch 10, mounted on the outlet pipe 8, can be set in a vertical position (Drain mode) at any angular position of the receiving pipe 1, which makes it possible to carry out convenient technological discharge of produced water into the industrial rain sewer.

If the tank 2 is operated at positive ambient temperatures, the heat shield 7 can be removed, and then the position (rotation) of the receiving pipe 1 is controlled by the first rotary handle 5.

Using the utility model provides a complete discharge from the reservoir of produced water containing contaminants, suspended solids, oil products, snow and ice formations.

Claims (6)

1. A device for draining produced water from a tank, comprising flanges with an oil seal mounted on the wall of the tank, a receiving nozzle with a bent end passing through the flanges with an oil seal, a tap installed on the end of the receiving nozzle, a first rotary handle fixed to the receiving nozzle between the flanges and a crane, characterized in that a ball valve with a heating jacket is used as a crane, the outlet of the crane is connected to a branch pipe, on which a second rotary handle is rigidly fixed, the branch pipe is rigidly coupled to the output tap of ensuring the possibility of rotation relative to the receiving nozzle, the curved end of which has an oblique cut, the gland flanges, the first swivel arm, a ball valve, the outlet tube inlet ball valve closed in a detachable heat shield attached to the vessel wall. 2. The device according to p. 1, characterized in that the oblique cut at the end of the bent end of the receiving pipe is made with an ellipticity from 0.5 to 0.7. 3. The device according to claim 1, characterized in that the removable heat shield is made with a hatch and double walls, between which a two-component mounting foam is placed. 4. The device according to claim 1, characterized in that the gland of the flanges is made in the form of a sleeve with internal grooves placed on it, in which bronze rings are installed. 5. The device according to p. 1, characterized in that the flanges with an oil seal contain a limiter of rotation of the receiving pipe. 6. The device according to claim 1, characterized in that in the heating jacket of the ball valve it is made with the possibility of using steam, water, oil and other liquid media as a heat carrier.

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