RU199313U1 - Siphon valve with a device for limiting the free movement of the swing arm - Google Patents

Abstract

The utility model relates to devices for draining produced water from steel vertical cylindrical tanks. The technical result achieved by the implementation of the utility model is to exclude the possibility of damage to the internal anticorrosive coating of the tank and the formation of through corrosion damage to the edge of the bottom of the tank. A siphon valve with a device for limiting the free travel of the rotary bend contains a rotary bend passed through the flange and gland-box, an oil seal pressed against the body of the gland-box, and a device for limiting the free travel is mounted on the swivel bend, consisting of halves of a split coupling connected between itself and fixed on the rotary branch by means of a bolted connection, while one of the halves of the split coupling has a wall with a groove in which a cylindrical protrusion of one of the thrust pins screwed into the housing of the grund-box is located. 2 wp f-ly, 3 dwg

Description

The utility model relates to devices for draining produced water from steel vertical cylindrical tanks.

A siphon valve for oil tanks is known from the prior art (RF patent for utility model RU 8075, publ. 16.10.1998, IPC: F16T 1/00), which contains a straight-through valve, a swing handle, a stuffing box body, flanges and a branch pipe with a rotary branch. The branch pipe, consisting of horizontal and inclined branches, is made as a single piece, and to ensure a stable suction process, the inclined branch is made with a slope away from the vertical axis of the siphon valve.

The disadvantage of the known technical solution is that in the working position the branch pipe of the rotary outlet of the siphon valve touches the edge of the bottom. In this case, damage to the internal anticorrosive coating of the bottom edge and accelerated corrosion process at the point of contact of the rotary elbow with the bottom edge is possible. If the rotary bend is in the working position for a long time, this can lead to through corrosion damage and leakage of oil (oil product) from the tank.

The technical problem to be solved by the claimed utility model is the development of the design of a siphon valve with a device for limiting the free stroke of the rotary outlet, which ensures the removal of produced water that settles from oil or oil products and accumulates in the lower part of the tank.

The technical result achieved by the implementation of the utility model is to exclude the possibility of damage to the internal anti-corrosion coating of the tank and the formation of through corrosion damage to the edge of the bottom of the tank.

The technical problem is solved, and the specified technical result is achieved due to the fact that the siphon valve with a device for limiting the free travel of the rotary bend contains a rotary bend passed through the flange and the gland-box, an oil seal pressed against the body of the ground-box, and mounted on the rotary bend a device for limiting free play, consisting of halves of a split clutch, connected to each other and fixed on the rotary arm by means of a bolted connection, while one of the halves of the split clutch has a wall with a groove in which a cylindrical protrusion of one of the thrust pins screwed into the body is located grund-axles.

In addition, the specified technical result is achieved in particular cases of the implementation of a utility model due to the fact that:

- on the wall with the groove of the split coupling half, there are position indicators of the rotary arm: inoperative position indicator, operating position indicator and flushing position indicator;

- the crane is equipped with handles with the ability to rotate the rotary branch pipe to transfer it to the working, non-working or flushing position.

The utility model is illustrated by drawings of axonometric projections of a general view of a siphon valve with a device for limiting the free stroke of the rotary branch (Fig. 1-3), in which the following structural elements are designated by positions:

1 - nut;

2 - grund-axle;

3 - stuffing box;

4 - indicator of non-working position;

5 - working position indicator;

6 - persistent hairpin;

7 - device for limiting the free running;

8 - rotary branch;

9 - flange;

10 - flange stud

11 - handle;

12 - indicator of the flushing position;

13 - split clutch;

14 - bolted connection.

A siphon valve with a device for limiting the free stroke of the rotary branch (Fig. 1-3) contains a flange 9 with pins 10, to which the body of the grub-box 2 is attached with nuts 1. The flange 9 is designed to be welded to the wall of a vertical cylindrical tank (in Fig. 1-3 not shown).

Through the body of the grommet 2 and the flange 9, a rotary branch 8 is passed, which can rotate around the horizontal axis together with an inclined branch pipe, which is its integral part and located inside the tank (in Figs. 1-3, the branch pipe of the rotary branch 8 is not designated by a separate position). The space between the rotary branch 8 and the body of the gland-box 2 is filled with stuffing box packing (not shown in Figs. 1-3). The stuffing box is sealed with a gland 3, which is pressed against the body of the gland-box 2 by thrust pins 6. One of the pins 6 is made with a cylindrical protrusion. The hairpin 6, screwed into the body of the grommet 2 of the siphon valve, limits the rotation of the siphon valve due to contact with the split coupling 13 in the working and flushing position.

On the rotary arm 8 is mounted a device for limiting the free play 7, which consists of a split clutch 13 (Fig. 2, 3), consisting of two halves connected to each other and fixed on the rotary arm 8 by means of a bolt connection 14 (Fig. 2, 3). One of the halves of the split clutch 13 has a wall with a groove in which a cylindrical protrusion of one of the thrust pins 6 screwed into the housing of the grub-box 2 is located.

The split coupling 13 is located on the rotary branch 8 of the siphon valve in such a way that in the working and flushing position of the rotary branch, the stop pin 6 prevents the contact of the rotary branch with the edge of the bottom of the tank and limits its free rotation.

On the wall with the groove of the half of the split sleeve 13, there are position indicators of the rotary arm 8: an inoperative position indicator 4, an operating position indicator 5 and a flushing position indicator 12.

The siphon valve is equipped with handles 11, which rotate the rotary branch pipe 8 to transfer it to the working, non-working or flushing position. The handles 11 are attached to the halves of the split coupling 13.

A siphon valve with a device for limiting the free stroke of the rotary branch works as follows.

To drain the bottom water settled from oil or oil product, the rotary branch 8 of the siphon valve is transferred to the lower position corresponding to the operating position indicator 5. In this case, the thrust pin 5, resting against the groove of the wall of the split sleeve 13, prevents the contact of the rotary branch 8 with the edge of the tank bottom and limits its free rotation. Due to the guaranteed absence of contact of the rotary branch 8 with the edge of the bottom of the tank, the internal anticorrosive coating of the tank is not damaged by the rotary branch or the rate of the corrosion process in the crevice between the cut of the rotary branch of the siphon valve and the edge of the bottom is reduced in the presence of damage.

After the drainage of the settled bottom water is completed, the rotary outlet 8 is moved to the position corresponding to the flushing position indicator 12, in which the cavity of the siphon valve is flushed with clean oil or oil product from the residues of bottom water or watered oil (oil product). In this case, the branch pipe of the rotary branch 8 is turned up.

After flushing the cavity of the siphon valve with pure oil or petroleum product, the rotary branch 8 is moved to the horizontal position corresponding to the inoperative position indicator 4. In this position, the device is operated for a long time.

The use of the utility model excludes the possibility of damage to the internal anticorrosive coating of the tank and the formation of through corrosion damage to the edges of the bottom of the tank.

Claims (3)

1. Siphon valve with a device for limiting the free stroke of the rotary bend, containing a rotary bend passed through the flange and the grommet, an oil seal pressed against the body of the grommet, characterized in that a device for limiting the free play is mounted on the rotary bend, consisting of halves of the split clutch, connected to each other and fixed on the rotary bend by means of a bolted connection, while one of the halves of the split clutch has a wall with a groove, in which a cylindrical protrusion of one of the thrust pins screwed into the housing of the packing box is located. 2. Siphon valve according to claim 1, characterized in that on the wall with the groove of the split coupling half there are position indicators of the rotary branch: an inoperative position indicator, an operating position indicator and a flushing position indicator. 3. Siphon valve according to claim 1, characterized in that the valve is equipped with handles with the ability to rotate the rotary branch pipe to transfer it to the working, non-working or flushing position.

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